From 1a6c6cf7685a1d0cb98506c18b02b3db37385052 Mon Sep 17 00:00:00 2001 From: KimLS Date: Sun, 30 Jun 2019 18:20:31 -0700 Subject: [PATCH] Delete old ngzlib lib --- libs/zlibng/.gitattributes | 4 - libs/zlibng/.gitignore | 76 - libs/zlibng/.travis.yml | 283 --- libs/zlibng/CMakeLists.txt | 865 -------- libs/zlibng/ChangeLog.zlib | 1521 -------------- libs/zlibng/FAQ.zlib | 374 ---- libs/zlibng/INDEX | 55 - libs/zlibng/INSTALL | 64 - libs/zlibng/LICENSE.md | 19 - libs/zlibng/Makefile.in | 365 ---- libs/zlibng/README.md | 81 - libs/zlibng/README.zlib | 118 -- libs/zlibng/adler32.c | 132 -- libs/zlibng/adler32_p.h | 77 - libs/zlibng/arch/.gitignore | 2 - libs/zlibng/arch/arm/Makefile.in | 54 - libs/zlibng/arch/arm/adler32_neon.c | 134 -- libs/zlibng/arch/arm/adler32_neon.h | 29 - libs/zlibng/arch/arm/arm.h | 13 - libs/zlibng/arch/arm/armfeature.c | 50 - libs/zlibng/arch/arm/crc32_acle.c | 115 - libs/zlibng/arch/arm/ctzl.h | 12 - libs/zlibng/arch/arm/fill_window_arm.c | 169 -- libs/zlibng/arch/arm/insert_string_acle.c | 53 - libs/zlibng/arch/generic/Makefile.in | 21 - libs/zlibng/arch/s390/Makefile.in | 40 - libs/zlibng/arch/s390/README.md | 69 - libs/zlibng/arch/s390/dfltcc_common.c | 86 - libs/zlibng/arch/s390/dfltcc_common.h | 29 - libs/zlibng/arch/s390/dfltcc_deflate.c | 365 ---- libs/zlibng/arch/s390/dfltcc_deflate.h | 50 - libs/zlibng/arch/s390/dfltcc_detail.h | 201 -- libs/zlibng/arch/s390/dfltcc_inflate.c | 142 -- libs/zlibng/arch/s390/dfltcc_inflate.h | 44 - libs/zlibng/compress.c | 79 - libs/zlibng/configure | 1503 -------------- libs/zlibng/crc32.c | 498 ----- libs/zlibng/crc32.h | 735 ------- libs/zlibng/deflate.c | 1712 --------------- libs/zlibng/deflate.h | 445 ---- libs/zlibng/deflate_fast.c | 120 -- libs/zlibng/deflate_medium.c | 327 --- libs/zlibng/deflate_p.h | 77 - libs/zlibng/deflate_slow.c | 164 -- libs/zlibng/doc/algorithm.txt | 209 -- libs/zlibng/doc/rfc1950.txt | 619 ------ libs/zlibng/doc/rfc1951.txt | 955 --------- libs/zlibng/doc/rfc1952.txt | 675 ------ libs/zlibng/doc/txtvsbin.txt | 107 - libs/zlibng/functable.c | 133 -- libs/zlibng/functable.h | 21 - libs/zlibng/gzclose.c | 24 - libs/zlibng/gzendian.h | 60 - libs/zlibng/gzguts.h | 166 -- libs/zlibng/gzlib.c | 518 ----- libs/zlibng/gzread.c | 599 ------ libs/zlibng/gzwrite.c | 516 ----- libs/zlibng/infback.c | 614 ------ libs/zlibng/inffast.c | 389 ---- libs/zlibng/inffast.h | 18 - libs/zlibng/inffixed.h | 94 - libs/zlibng/inflate.c | 1577 -------------- libs/zlibng/inflate.h | 132 -- libs/zlibng/inftrees.c | 297 --- libs/zlibng/inftrees.h | 66 - libs/zlibng/match_p.h | 512 ----- libs/zlibng/memcopy.h | 674 ------ libs/zlibng/test/.gitignore | 2 - libs/zlibng/test/CVE-2002-0059/test.gz | Bin 4610 -> 0 bytes libs/zlibng/test/CVE-2003-0107.c | 20 - libs/zlibng/test/CVE-2004-0797/test.gz | Bin 52 -> 0 bytes libs/zlibng/test/CVE-2005-1849/test.gz | Bin 52 -> 0 bytes libs/zlibng/test/CVE-2005-2096/test.gz | Bin 52 -> 0 bytes libs/zlibng/test/INDEX | 10 - libs/zlibng/test/Makefile.in | 105 - libs/zlibng/test/example.c | 552 ----- libs/zlibng/test/fuzz/checksum_fuzzer.c | 73 - libs/zlibng/test/fuzz/compress_fuzzer.c | 87 - libs/zlibng/test/fuzz/example_dict_fuzzer.c | 170 -- libs/zlibng/test/fuzz/example_flush_fuzzer.c | 126 -- libs/zlibng/test/fuzz/example_large_fuzzer.c | 143 -- libs/zlibng/test/fuzz/example_small_fuzzer.c | 124 -- libs/zlibng/test/fuzz/minigzip_fuzzer.c | 326 --- .../test/fuzz/standalone_fuzz_target_runner.c | 35 - libs/zlibng/test/infcover.c | 669 ------ libs/zlibng/test/minigzip.c | 361 ---- libs/zlibng/test/testCVEinputs.sh | 31 - libs/zlibng/treebuild.xml | 116 -- libs/zlibng/trees.c | 1086 ---------- libs/zlibng/trees.h | 132 -- libs/zlibng/uncompr.c | 89 - libs/zlibng/win32/DLL_FAQ.txt | 397 ---- libs/zlibng/win32/Makefile.arm | 170 -- libs/zlibng/win32/Makefile.msc | 162 -- libs/zlibng/win32/README-WIN32.txt | 103 - libs/zlibng/win32/VisualC.txt | 3 - libs/zlibng/win32/zlib-ng.def | 61 - libs/zlibng/win32/zlib-ng1.rc | 40 - libs/zlibng/win32/zlib.def | 61 - libs/zlibng/win32/zlib1.rc | 40 - libs/zlibng/win32/zlibcompat.def | 94 - libs/zlibng/zbuild.h | 25 - libs/zlibng/zconf-ng.h.in | 174 -- libs/zlibng/zconf.h.in | 174 -- libs/zlibng/zlib-ng.h | 1842 ---------------- libs/zlibng/zlib-ng.map | 107 - libs/zlibng/zlib.3 | 149 -- libs/zlibng/zlib.3.pdf | Bin 19318 -> 0 bytes libs/zlibng/zlib.h | 1848 ----------------- libs/zlibng/zlib.map | 96 - libs/zlibng/zlib.pc.cmakein | 13 - libs/zlibng/zlib.pc.in | 13 - libs/zlibng/zutil.c | 140 -- libs/zlibng/zutil.h | 247 --- 114 files changed, 30563 deletions(-) delete mode 100644 libs/zlibng/.gitattributes delete mode 100644 libs/zlibng/.gitignore delete mode 100644 libs/zlibng/.travis.yml delete mode 100644 libs/zlibng/CMakeLists.txt delete mode 100644 libs/zlibng/ChangeLog.zlib delete mode 100644 libs/zlibng/FAQ.zlib delete mode 100644 libs/zlibng/INDEX delete mode 100644 libs/zlibng/INSTALL delete mode 100644 libs/zlibng/LICENSE.md delete mode 100644 libs/zlibng/Makefile.in delete mode 100644 libs/zlibng/README.md delete mode 100644 libs/zlibng/README.zlib delete mode 100644 libs/zlibng/adler32.c delete mode 100644 libs/zlibng/adler32_p.h delete mode 100644 libs/zlibng/arch/.gitignore delete mode 100644 libs/zlibng/arch/arm/Makefile.in delete mode 100644 libs/zlibng/arch/arm/adler32_neon.c delete mode 100644 libs/zlibng/arch/arm/adler32_neon.h delete mode 100644 libs/zlibng/arch/arm/arm.h delete mode 100644 libs/zlibng/arch/arm/armfeature.c delete mode 100644 libs/zlibng/arch/arm/crc32_acle.c delete mode 100644 libs/zlibng/arch/arm/ctzl.h delete mode 100644 libs/zlibng/arch/arm/fill_window_arm.c delete mode 100644 libs/zlibng/arch/arm/insert_string_acle.c delete mode 100644 libs/zlibng/arch/generic/Makefile.in delete mode 100644 libs/zlibng/arch/s390/Makefile.in delete mode 100644 libs/zlibng/arch/s390/README.md delete mode 100644 libs/zlibng/arch/s390/dfltcc_common.c delete mode 100644 libs/zlibng/arch/s390/dfltcc_common.h delete mode 100644 libs/zlibng/arch/s390/dfltcc_deflate.c delete mode 100644 libs/zlibng/arch/s390/dfltcc_deflate.h delete mode 100644 libs/zlibng/arch/s390/dfltcc_detail.h delete mode 100644 libs/zlibng/arch/s390/dfltcc_inflate.c delete mode 100644 libs/zlibng/arch/s390/dfltcc_inflate.h delete mode 100644 libs/zlibng/compress.c delete mode 100644 libs/zlibng/configure delete mode 100644 libs/zlibng/crc32.c delete mode 100644 libs/zlibng/crc32.h delete mode 100644 libs/zlibng/deflate.c delete mode 100644 libs/zlibng/deflate.h delete mode 100644 libs/zlibng/deflate_fast.c delete mode 100644 libs/zlibng/deflate_medium.c delete mode 100644 libs/zlibng/deflate_p.h delete mode 100644 libs/zlibng/deflate_slow.c delete mode 100644 libs/zlibng/doc/algorithm.txt delete mode 100644 libs/zlibng/doc/rfc1950.txt delete mode 100644 libs/zlibng/doc/rfc1951.txt delete mode 100644 libs/zlibng/doc/rfc1952.txt delete mode 100644 libs/zlibng/doc/txtvsbin.txt delete 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libs/zlibng/zlib.pc.in delete mode 100644 libs/zlibng/zutil.c delete mode 100644 libs/zlibng/zutil.h diff --git a/libs/zlibng/.gitattributes b/libs/zlibng/.gitattributes deleted file mode 100644 index 68ec3a174..000000000 --- a/libs/zlibng/.gitattributes +++ /dev/null @@ -1,4 +0,0 @@ -* text=auto -*.c text -*.h text -Makefile text diff --git a/libs/zlibng/.gitignore b/libs/zlibng/.gitignore deleted file mode 100644 index 50e5ee6fa..000000000 --- a/libs/zlibng/.gitignore +++ /dev/null @@ -1,76 +0,0 @@ -*.diff -*.patch -*.orig -*.rej - -*~ -*.a -*.lo -*.o -*.dylib - -*.gcda -*.gcno -*.gcov - -/example -/example64 -/examplesh -/libz.so* -/libz-ng.so* -/minigzip -/minigzip64 -/minigzipsh -/zlib.pc -/zlib-ng.pc -/CVE-2003-0107 - -.DS_Store -*_fuzzer -*.obj -*.exe -*.pdb -*.exp -*.lib -*.dll -*.res -foo.gz -*.manifest -*.opensdf -*.sln -*.sdf -*.vcxproj -*.vcxproj.filters -.vs - -CMakeCache.txt -CMakeFiles -Testing -*.cmake -*.stackdump -zconf.h -zconf.h.cmakein -zconf.h.included -zconf-ng.h -zconf-ng.h.cmakein -ztest* - -configure.log -a.out - -/Makefile -/arch/arm/Makefile -/arch/generic/Makefile -/arch/x86/Makefile -.kdev4 -*.kdev4 - -/Debug -/example.dir -/minigzip.dir -/zlib.dir -/zlibstatic.dir -/win32/Debug - -/.idea -/cmake-build-debug diff --git a/libs/zlibng/.travis.yml b/libs/zlibng/.travis.yml deleted file mode 100644 index a27e41472..000000000 --- a/libs/zlibng/.travis.yml +++ /dev/null @@ -1,283 +0,0 @@ -language: c -cache: ccache -dist: xenial - -env: - global: - - BUILDDIR=. - - MAKER="make -j2" - - TESTER="make test" - -matrix: - include: - - os: windows - compiler: clang - env: - - GENERATOR="cmake . " - - MAKER="cmake --build . --config Release" - - TESTER="ctest --verbose -C Release" - - os: windows - compiler: clang - env: - - GENERATOR="cmake ..\\zlib-ng -DZLIB_COMPAT=ON" - - MAKER="cmake --build . --config Release" - - TESTER="ctest --verbose -C Release" - - BUILDDIR=..\\build - - os: windows - compiler: gcc - env: - - GENERATOR="cmake ." - - MAKER="cmake --build . --config Release" - - TESTER="ctest --verbose -C Release" - - - os: linux - compiler: gcc - env: GENERATOR="./configure --warn" - - os: linux - compiler: gcc - env: GENERATOR="cmake . -DZLIB_COMPAT=OFF -DWITH_GZFILEOP=ON -DWITH_NEW_STRATEGIES=YES -DWITH_OPTIM=ON" - - os: linux - compiler: gcc - env: - - GENERATOR="../zlib-ng/configure --warn --zlib-compat" - - BUILDDIR=../build - - os: linux - compiler: gcc - env: GENERATOR="./configure --warn --zlib-compat --without-optimizations --without-new-strategies" - - os: linux - compiler: gcc - env: GENERATOR="cmake ." - - os: linux - compiler: gcc - env: - - GENERATOR="cmake ../zlib-ng" - - BUILDDIR=../build - - - os: linux - compiler: clang - env: GENERATOR="./configure --warn --zlib-compat" - - os: linux - compiler: clang - env: - - GENERATOR="cmake ../zlib-ng" - - BUILDDIR=../build - - os: linux - compiler: clang - env: - - GENERATOR="scan-build -v --status-bugs cmake ../zlib-ng" - - MAKER="scan-build -v --status-bugs make" - - BUILDDIR=../build - - - os: osx - compiler: gcc - env: GENERATOR="./configure --warn --zlib-compat" - - os: osx - compiler: gcc - env: - - GENERATOR="../zlib-ng/configure --warn --zlib-compat" - - BUILDDIR=../build - - os: osx - compiler: gcc - env: GENERATOR="cmake ." - - - os: osx - compiler: clang - env: GENERATOR="./configure --warn --zlib-compat" - - os: osx - compiler: clang - env: - - GENERATOR="cmake ../zlib-ng" - - BUILDDIR=../build - - # compiling for linux-ppc64le variants - - os: linux-ppc64le - compiler: gcc - env: GENERATOR="cmake ." - - os: linux-ppc64le - compiler: gcc - env: - - GENERATOR="cmake ../zlib-ng" - - BUILDDIR=../build - - - os: linux-ppc64le - compiler: clang - env: GENERATOR="./configure --warn --zlib-compat" - - os: linux-ppc64le - compiler: clang - env: - - GENERATOR="cmake ../zlib-ng" - - BUILDDIR=../build - - # Cross compiling for arm variants - - os: linux - compiler: aarch64-linux-gnu-gcc - addons: - apt: - packages: - - qemu - - gcc-aarch64-linux-gnu - - libc-dev-arm64-cross - # For all aarch64 implementations NEON is mandatory, while crypto/crc are not. - env: - - GENERATOR="./configure --warn --zlib-compat" - - CHOST=aarch64-linux-gnu - - os: linux - compiler: aarch64-linux-gnu-gcc - addons: - apt: - packages: - - qemu - - gcc-aarch64-linux-gnu - - libc-dev-arm64-cross - # For all aarch64 implementations NEON is mandatory, while crypto/crc are not. - env: - - GENERATOR="cmake -DCMAKE_TOOLCHAIN_FILE=cmake/toolchain-aarch64.cmake . -DZLIB_COMPAT=ON" - - MAKER="cmake --build . --config Release" - - TESTER="ctest --verbose -C Release" - - os: linux - compiler: aarch64-linux-gnu-gcc - addons: - apt: - packages: - - qemu - - gcc-aarch64-linux-gnu - - libc-dev-arm64-cross - env: - - GENERATOR="./configure --warn --zlib-compat" - - CHOST=aarch64-linux-gnu - - os: linux - compiler: aarch64-linux-gnu-gcc - addons: - apt: - packages: - - qemu - - gcc-aarch64-linux-gnu - - libc-dev-arm64-cross - env: - - GENERATOR="cmake -DCMAKE_TOOLCHAIN_FILE=cmake/toolchain-aarch64.cmake ." - - MAKER="cmake --build . --config Release" - - TESTER="ctest --verbose -C Release" - # Hard-float subsets - - os: linux - compiler: arm-linux-gnueabihf-gcc - addons: - apt: - packages: - - qemu - - gcc-arm-linux-gnueabihf - - libc-dev-armhf-cross - env: - - GENERATOR="./configure --warn" - - CHOST=arm-linux-gnueabihf - - os: linux - compiler: arm-linux-gnueabihf-gcc - addons: - apt: - packages: - - qemu - - gcc-arm-linux-gnueabihf - - libc-dev-armhf-cross - env: - - GENERATOR="cmake -DCMAKE_TOOLCHAIN_FILE=cmake/toolchain-arm.cmake . -DCMAKE_C_COMPILER_TARGET=arm-linux-gnueabihf" - - MAKER="cmake --build . --config Release" - - TESTER="ctest --verbose -C Release" - - os: linux - compiler: arm-linux-gnueabihf-gcc - addons: - apt: - packages: - - qemu - - gcc-arm-linux-gnueabihf - - libc-dev-armhf-cross - env: - - GENERATOR="./configure --warn --zlib-compat --without-neon" - - CHOST=arm-linux-gnueabihf - - os: linux - compiler: arm-linux-gnueabihf-gcc - addons: - apt: - packages: - - qemu - - gcc-arm-linux-gnueabihf - - libc-dev-armhf-cross - env: - - GENERATOR="cmake -DCMAKE_TOOLCHAIN_FILE=cmake/toolchain-arm.cmake . -DZLIB_COMPAT=ON -DWITH_NEON=OFF -DCMAKE_C_COMPILER_TARGET=arm-linux-gnueabihf" - - MAKER="cmake --build . --config Release" - - TESTER="ctest --verbose -C Release" - - os: linux - compiler: arm-linux-gnueabihf-gcc - addons: - apt: - packages: - - qemu - - gcc-arm-linux-gnueabihf - - libc-dev-armhf-cross - env: - - GENERATOR="./configure --warn --zlib-compat" - - CHOST=arm-linux-gnueabihf - - os: linux - compiler: arm-linux-gnueabihf-gcc - addons: - apt: - packages: - - qemu - - gcc-arm-linux-gnueabihf - - libc-dev-armhf-cross - env: - - GENERATOR="cmake -DCMAKE_TOOLCHAIN_FILE=cmake/toolchain-arm.cmake . -DZLIB_COMPAT=ON -DCMAKE_C_COMPILER_TARGET=arm-linux-gnueabihf" - - MAKER="cmake --build . --config Release" - - TESTER="ctest --verbose -C Release" - # Soft-float subset - - os: linux - compiler: arm-linux-gnueabi-gcc - addons: - apt: - packages: - - qemu - - gcc-arm-linux-gnueabi - - libc-dev-armel-cross - env: - - GENERATOR="./configure" - - CHOST=arm-linux-gnueabi - - os: linux - compiler: arm-linux-gnueabi-gcc - addons: - apt: - packages: - - qemu - - gcc-arm-linux-gnueabi - - libc-dev-armel-cross - env: - - GENERATOR="cmake -DCMAKE_TOOLCHAIN_FILE=cmake/toolchain-arm.cmake . -DCMAKE_C_COMPILER_TARGET=arm-linux-gnueabi" - - MAKER="cmake --build . --config Release" - - TESTER="ctest --verbose -C Release" - - os: linux - compiler: arm-linux-gnueabi-gcc - addons: - apt: - packages: - - qemu - - gcc-arm-linux-gnueabi - - libc-dev-armel-cross - env: - - GENERATOR="./configure --zlib-compat" - - CHOST=arm-linux-gnueabi - - os: linux - compiler: arm-linux-gnueabi-gcc - addons: - apt: - packages: - - qemu - - gcc-arm-linux-gnueabi - - libc-dev-armel-cross - env: - - GENERATOR="cmake -DCMAKE_TOOLCHAIN_FILE=cmake/toolchain-arm.cmake . -DZLIB_COMPAT=ON -DCMAKE_C_COMPILER_TARGET=arm-linux-gnueabi" - - MAKER="cmake --build . --config Release" - - TESTER="ctest --verbose -C Release" - -script: - - mkdir -p $BUILDDIR - - cd $BUILDDIR - - $GENERATOR - - $MAKER - - $TESTER diff --git a/libs/zlibng/CMakeLists.txt b/libs/zlibng/CMakeLists.txt deleted file mode 100644 index b1845522b..000000000 --- a/libs/zlibng/CMakeLists.txt +++ /dev/null @@ -1,865 +0,0 @@ -cmake_minimum_required(VERSION 3.5.1) -if(CMAKE_VERSION VERSION_LESS 3.12) - cmake_policy(VERSION ${CMAKE_VERSION}) -else() - cmake_policy(VERSION 3.5.1...3.13.2) -endif() - -set(CMAKE_MACOSX_RPATH 1) - -# If not specified on the command line, enable C99 as the default -# Configuration items that affect the global compiler envirionment standards -# should be issued before the "project" command. -if(NOT CMAKE_C_STANDARD) - set (CMAKE_C_STANDARD 99) # The C standard whose features are requested to build this target -endif() -if(NOT CMAKE_C_STANDARD_REQUIRED) - set (CMAKE_C_STANDARD_REQUIRED ON) # Boolean describing whether the value of C_STANDARD is a requirement -endif() -if(NOT CMAKE_C_EXTENSIONS) - set (CMAKE_C_EXTENSIONS OFF) # Boolean specifying whether compiler specific extensions are requested -endif() -set(VALID_C_STANDARDS "99" "11") -if(NOT CMAKE_C_STANDARD IN_LIST VALID_C_STANDARDS ) - MESSAGE(FATAL_ERROR "CMAKE_C_STANDARD:STRING=${CMAKE_C_STANDARD} not in know standards list\n ${VALID_C_STANDARDS}") -endif() - -# Parse the full version number from zlib.h and include in ZLIB_FULL_VERSION -file(READ ${CMAKE_CURRENT_SOURCE_DIR}/zlib${SUFFIX}.h _zlib_h_contents) -string(REGEX REPLACE ".*#define[ \t]+ZLIB_VERSION[ \t]+\"([0-9]+.[0-9]+.[0-9]+).*\".*" - "\\1" ZLIB_HEADER_VERSION ${_zlib_h_contents}) -string(REGEX REPLACE ".*#define[ \t]+ZLIBNG_VERSION[ \t]+\"([-0-9A-Za-z.]+)\".*" - "\\1" ZLIBNG_HEADER_VERSION ${_zlib_h_contents}) -message(STATUS "ZLIB_HEADER_VERSION: ${ZLIB_HEADER_VERSION}") -message(STATUS "ZLIBNG_HEADER_VERSION: ${ZLIBNG_HEADER_VERSION}") - -project(zlib - VERSION ${ZLIB_HEADER_VERSION} - LANGUAGES C) - -set(INSTALL_BIN_DIR "${CMAKE_INSTALL_PREFIX}/bin" CACHE PATH "Installation directory for executables") -set(INSTALL_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib" CACHE PATH "Installation directory for libraries") -set(INSTALL_INC_DIR "${CMAKE_INSTALL_PREFIX}/include" CACHE PATH "Installation directory for headers") -set(INSTALL_MAN_DIR "${CMAKE_INSTALL_PREFIX}/share/man" CACHE PATH "Installation directory for manual pages") -set(INSTALL_PKGCONFIG_DIR "${CMAKE_INSTALL_PREFIX}/share/pkgconfig" CACHE PATH "Installation directory for pkgconfig (.pc) files") - -include(CheckTypeSize) -include(CheckSymbolExists) -include(CheckFunctionExists) -include(CheckIncludeFile) -include(CheckCSourceCompiles) -include(CheckCSourceRuns) -include(CMakeDependentOption) -include(FeatureSummary) - -# Make sure we use an appropriate BUILD_TYPE by default, "Release" to be exact -# this should select the maximum generic optimisation on the current platform (i.e. -O3 for gcc/clang) -if(NOT CMAKE_BUILD_TYPE) - 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endif() - if(WITH_DFLTCC_DEFLATE) - add_definitions(-DS390_DFLTCC_DEFLATE) - set(ZLIB_ARCH_SRCS ${ZLIB_ARCH_SRCS} ${ARCHDIR}/dfltcc_deflate.c) - endif() - if(WITH_DFLTCC_INFLATE) - add_definitions(-DS390_DFLTCC_INFLATE) - set(ZLIB_ARCH_SRCS ${ZLIB_ARCH_SRCS} ${ARCHDIR}/dfltcc_inflate.c) - endif() - endif() -endif() -message(STATUS "Architecture-specific source files: ${ZLIB_ARCH_SRCS}") - -#============================================================================ -# zconf.h -#============================================================================ - -macro(generate_cmakein input output) - file(REMOVE ${output}) - file(STRINGS ${input} _lines) - foreach(_line IN LISTS _lines) - file(APPEND ${output} "${_line}\n") - - if (_line STREQUAL "#define ZCONF_H" OR _line STREQUAL "#define ZCONFNG_H") - file(APPEND ${output} "#cmakedefine Z_HAVE_UNISTD_H\n") - if(NOT HAVE_PTRDIFF_T) - file(APPEND ${output} "#cmakedefine NEED_PTRDIFF_T\n") - file(APPEND ${output} "#cmakedefine PTRDIFF_TYPE ${PTRDIFF_TYPE}\n") - endif() - endif() - endforeach() -endmacro(generate_cmakein) - -generate_cmakein( ${CMAKE_CURRENT_SOURCE_DIR}/zconf${SUFFIX}.h.in ${CMAKE_CURRENT_BINARY_DIR}/zconf${SUFFIX}.h.cmakein ) - -if(NOT CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_CURRENT_BINARY_DIR) - # If we're doing an out of source build and the user has a zconf.h - # in their source tree... - if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/zconf${SUFFIX}.h) - message(STATUS "Renaming") - message(STATUS " ${CMAKE_CURRENT_SOURCE_DIR}/zconf${SUFFIX}.h") - message(STATUS "to 'zconf${SUFFIX}.h.included' because this file is included with zlib") - message(STATUS "but CMake generates it automatically in the build directory.") - file(RENAME ${CMAKE_CURRENT_SOURCE_DIR}/zconf${SUFFIX}.h ${CMAKE_CURRENT_SOURCE_DIR}/zconf${SUFFIX}.h.included) - endif() - - # If we're doing an out of source build and the user has a zconf.h.cmakein - # in their source tree... - if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/zconf${SUFFIX}.h.cmakein) - message(STATUS "Renaming") - message(STATUS " ${CMAKE_CURRENT_SOURCE_DIR}/zconf${SUFFIX}.h.cmakein") - message(STATUS "to 'zconf${SUFFIX}.h.cmakeincluded' because this file is included with zlib") - message(STATUS "but CMake generates it automatically in the build directory.") - file(RENAME ${CMAKE_CURRENT_SOURCE_DIR}/zconf${SUFFIX}.h.cmakein ${CMAKE_CURRENT_SOURCE_DIR}/zconf${SUFFIX}.h.cmakeincluded) - endif() -endif() - -set(ZLIB_PC ${CMAKE_CURRENT_BINARY_DIR}/${LIBNAME2}.pc) -configure_file( ${CMAKE_CURRENT_SOURCE_DIR}/zlib.pc.cmakein - ${ZLIB_PC} @ONLY) -configure_file(${CMAKE_CURRENT_BINARY_DIR}/zconf${SUFFIX}.h.cmakein - ${CMAKE_CURRENT_BINARY_DIR}/zconf${SUFFIX}.h @ONLY) - - -#============================================================================ -# zlib -#============================================================================ - -set(ZLIB_PUBLIC_HDRS - ${CMAKE_CURRENT_BINARY_DIR}/zconf${SUFFIX}.h - zlib${SUFFIX}.h -) -set(ZLIB_PRIVATE_HDRS - crc32.h - deflate.h - functable.h - gzguts.h - inffast.h - inffixed.h - inflate.h - inftrees.h - trees.h - zutil.h -) -set(ZLIB_SRCS - adler32.c - compress.c - crc32.c - deflate.c - deflate_fast.c - deflate_medium.c - deflate_slow.c - functable.c - inflate.c - infback.c - inftrees.c - inffast.c - trees.c - uncompr.c - zutil.c -) - -set(ZLIB_GZFILE_SRCS - gzclose.c - gzlib.c - gzread.c - gzwrite.c -) - -if(NOT MINGW AND NOT MSYS) - set(ZLIB_DLL_SRCS - win32/zlib${SUFFIX}1.rc # If present will override custom build rule below. - ) -endif() - -if(MINGW OR MSYS) - # This gets us DLL resource information when compiling on MinGW. - if(NOT CMAKE_RC_COMPILER) - set(CMAKE_RC_COMPILER windres.exe) - endif() - - add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj - COMMAND ${CMAKE_RC_COMPILER} - -D GCC_WINDRES - -I ${CMAKE_CURRENT_SOURCE_DIR} - -I ${CMAKE_CURRENT_BINARY_DIR} - -o ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj - -i ${CMAKE_CURRENT_SOURCE_DIR}/win32/zlib${SUFFIX}1.rc) - set(ZLIB_DLL_SRCS ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj) -endif() - -add_library(zlib SHARED ${ZLIB_SRCS} ${ZLIB_ARCH_SRCS} ${ZLIB_ASMS} ${ZLIB_DLL_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS}) -target_include_directories(zlib PUBLIC ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}) -add_library(zlibstatic STATIC ${ZLIB_SRCS} ${ZLIB_ARCH_SRCS} ${ZLIB_ASMS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS}) -target_include_directories(zlibstatic PUBLIC ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}) - -if(WITH_GZFILEOP) - target_sources(zlib PRIVATE ${ZLIB_GZFILE_SRCS}) - target_sources(zlibstatic PRIVATE ${ZLIB_GZFILE_SRCS}) -endif() - -set_target_properties(zlib PROPERTIES DEFINE_SYMBOL ZLIB_DLL) -set_target_properties(zlib PROPERTIES SOVERSION 1) - -if (ZLIB_COMPAT) - set(ZLIB_FULL_VERSION ${ZLIB_HEADER_VERSION}) -else() - set(ZLIB_FULL_VERSION ${ZLIBNG_HEADER_VERSION}) -endif() -if(NOT CYGWIN) - # This property causes shared libraries on Linux to have the full version - # encoded into their final filename. We disable this on Cygwin because - # it causes cygz-${ZLIB_FULL_VERSION}.dll to be created when cygz.dll - # seems to be the default. - # - # This has no effect with MSVC, on that platform the version info for - # the DLL comes from the resource file win32/zlib1.rc - set_target_properties(zlib PROPERTIES VERSION ${ZLIB_FULL_VERSION}) -endif() - - -if(UNIX) - # On unix-like platforms the library is almost always called libz - set_target_properties(zlib zlibstatic PROPERTIES OUTPUT_NAME z${SUFFIX}) - if(NOT APPLE) - set_target_properties(zlib PROPERTIES LINK_FLAGS "-Wl,--version-script,\"${CMAKE_CURRENT_SOURCE_DIR}/${LIBNAME2}.map\"") - endif() -elseif(MSYS) - # Suppress version number from shared library name - set(CMAKE_SHARED_LIBRARY_NAME_WITH_VERSION 0) -elseif(BUILD_SHARED_LIBS AND WIN32) - # Creates zlib1.dll when building shared library version - set_target_properties(zlib PROPERTIES SUFFIX "1.dll") -endif() - -if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL ) - install(TARGETS zlib zlibstatic - RUNTIME DESTINATION "${INSTALL_BIN_DIR}" - ARCHIVE DESTINATION "${INSTALL_LIB_DIR}" - LIBRARY DESTINATION "${INSTALL_LIB_DIR}" ) -endif() -if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL ) - install(FILES zlib${SUFFIX}.h DESTINATION "${INSTALL_INC_DIR}" RENAME zlib${SUFFIX}.h) - install(FILES ${CMAKE_CURRENT_BINARY_DIR}/zconf${SUFFIX}.h DESTINATION "${INSTALL_INC_DIR}" RENAME zconf${SUFFIX}.h) -endif() -if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL ) - install(FILES zlib.3 DESTINATION "${INSTALL_MAN_DIR}/man3" RENAME zlib${SUFFIX}.3) -endif() -if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL ) - install(FILES ${ZLIB_PC} DESTINATION "${INSTALL_PKGCONFIG_DIR}") -endif() - -#============================================================================ -# Example binaries -#============================================================================ - -option(ZLIB_ENABLE_TESTS "Build test binaries" ON) -if (ZLIB_ENABLE_TESTS) - enable_testing() - macro(configure_test_executable target) - target_link_libraries(${target} zlib) - if(NOT WITH_GZFILEOP) - target_compile_definitions(${target} PUBLIC -DWITH_GZFILEOP) - target_sources(${target} PRIVATE ${ZLIB_GZFILE_SRCS}) - endif() - endmacro() - - add_executable(example test/example.c) - configure_test_executable(example) - add_test(NAME example COMMAND example${CMAKE_EXECUTABLE_SUFFIX}) - - add_executable(minigzip test/minigzip.c) - configure_test_executable(minigzip) - - if(HAVE_OFF64_T) - add_executable(example64 test/example.c) - configure_test_executable(example64) - set_target_properties(example64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64") - add_test(NAME example64 COMMAND example64${CMAKE_EXECUTABLE_SUFFIX}) - - add_executable(minigzip64 test/minigzip.c) - configure_test_executable(minigzip64) - set_target_properties(minigzip64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64") - endif() - - if(WITH_FUZZERS) - set(FUZZERS checksum compress example_small example_large example_flush example_dict minigzip) - file(GLOB ALL_SRC_FILES "${CMAKE_CURRENT_SOURCE_DIR}/*") - foreach(FUZZER ${FUZZERS}) - add_executable(${FUZZER}_fuzzer test/fuzz/${FUZZER}_fuzzer.c test/fuzz/standalone_fuzz_target_runner.c) - configure_test_executable(${FUZZER}_fuzzer) - add_test(${FUZZER}_fuzzer ${FUZZER}_fuzzer${CMAKE_EXECUTABLE_SUFFIX} ${ALL_SRC_FILES}) - endforeach() - endif() - - set(CVES CVE-2002-0059 CVE-2004-0797 CVE-2005-1849 CVE-2005-2096) - foreach(CVE ${CVES}) - set(CVE_COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $ -d) - add_test(NAME ${CVE} - COMMAND ${CMAKE_COMMAND} - "-DCOMMAND=${CVE_COMMAND}" - -DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/test/${CVE}/test.gz - "-DSUCCESS_EXIT=0;1" - -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/run-and-redirect.cmake) - endforeach() - - if(NOT WIN32 AND ZLIB_COMPAT) - add_executable(CVE-2003-0107 test/CVE-2003-0107.c) - target_link_libraries(CVE-2003-0107 zlib) - add_test(NAME CVE-2003-0107 COMMAND CVE-2003-0107) - endif() -endif() - -FEATURE_SUMMARY(WHAT ALL INCLUDE_QUIET_PACKAGES) - diff --git a/libs/zlibng/ChangeLog.zlib b/libs/zlibng/ChangeLog.zlib deleted file mode 100644 index d38c0a842..000000000 --- a/libs/zlibng/ChangeLog.zlib +++ /dev/null @@ -1,1521 +0,0 @@ -## -# THIS IS AN UNMAINTAINED COPY OF THE ORIGINAL FILE DISTRIBUTED WITH ZLIB 1.2.9 -## - - - - - ChangeLog file for zlib - -Changes in 1.2.11 (15 Jan 2017) -- Fix deflate stored bug when pulling last block from window -- Permit immediate deflateParams changes before any deflate input - -Changes in 1.2.10 (2 Jan 2017) -- Avoid warnings on snprintf() return value -- Fix bug in deflate_stored() for zero-length input -- Fix bug in gzwrite.c that produced corrupt gzip files -- Remove files to be installed before copying them in Makefile.in -- Add warnings when compiling with assembler code - -Changes in 1.2.9 (31 Dec 2016) -- Fix contrib/minizip to permit unzipping with desktop API [Zouzou] -- Improve contrib/blast to return unused bytes -- Assure that gzoffset() is correct when appending -- Improve compress() and uncompress() to support large lengths -- Fix bug in test/example.c where error code not saved -- Remedy Coverity warning [Randers-Pehrson] -- Improve speed of gzprintf() in transparent mode -- Fix inflateInit2() bug when windowBits is 16 or 32 -- Change DEBUG macro to ZLIB_DEBUG -- Avoid uninitialized access by gzclose_w() -- Allow building zlib outside of the source directory -- Fix bug that accepted invalid zlib header when windowBits is zero -- Fix gzseek() problem on MinGW due to buggy _lseeki64 there -- Loop on write() calls in gzwrite.c in case of non-blocking I/O -- Add --warn (-w) option to ./configure for more compiler warnings -- Reject a window size of 256 bytes if not using the zlib wrapper -- Fix bug when level 0 used with Z_HUFFMAN or Z_RLE -- Add --debug (-d) option to ./configure to define ZLIB_DEBUG -- Fix bugs in creating a very large gzip header -- Add uncompress2() function, which returns the input size used -- Assure that deflateParams() will not switch functions mid-block -- Dramatically speed up deflation for level 0 (storing) -- Add gzfread(), duplicating the interface of fread() -- Add gzfwrite(), duplicating the interface of fwrite() -- Add deflateGetDictionary() function -- Use snprintf() for later versions of Microsoft C -- Fix *Init macros to use z_ prefix when requested -- Replace as400 with os400 for OS/400 support [Monnerat] -- Add crc32_z() and adler32_z() functions with size_t lengths -- Update Visual Studio project files [AraHaan] - -Changes in 1.2.8 (28 Apr 2013) -- Update contrib/minizip/iowin32.c for Windows RT [Vollant] -- Do not force Z_CONST for C++ -- Clean up contrib/vstudio [Roß] -- Correct spelling error in zlib.h -- Fix mixed line endings in contrib/vstudio - -Changes in 1.2.7.3 (13 Apr 2013) -- Fix version numbers and DLL names in contrib/vstudio/*/zlib.rc - -Changes in 1.2.7.2 (13 Apr 2013) -- Change check for a four-byte type back to hexadecimal -- Fix typo in win32/Makefile.msc -- Add casts in gzwrite.c for pointer differences - -Changes in 1.2.7.1 (24 Mar 2013) -- Replace use of unsafe string functions with snprintf if available -- Avoid including stddef.h on Windows for Z_SOLO compile [Niessink] -- Fix gzgetc undefine when Z_PREFIX set [Turk] -- Eliminate use of mktemp in Makefile (not always available) -- Fix bug in 'F' mode for gzopen() -- Add inflateGetDictionary() function -- Correct comment in deflate.h -- Use _snprintf for snprintf in Microsoft C -- On Darwin, only use /usr/bin/libtool if libtool is not Apple -- Delete "--version" file if created by "ar --version" [Richard G.] -- Fix configure check for veracity of compiler error return codes -- Fix CMake compilation of static lib for MSVC2010 x64 -- Remove unused variable in infback9.c -- Fix argument checks in gzlog_compress() and gzlog_write() -- Clean up the usage of z_const and respect const usage within zlib -- Clean up examples/gzlog.[ch] comparisons of different types -- Avoid shift equal to bits in type (caused endless loop) -- Fix uninitialized value bug in gzputc() introduced by const patches -- Fix memory allocation error in examples/zran.c [Nor] -- Fix bug where gzopen(), gzclose() would write an empty file -- Fix bug in gzclose() when gzwrite() runs out of memory -- Check for input buffer malloc failure in examples/gzappend.c -- Add note to contrib/blast to use binary mode in stdio -- Fix comparisons of differently signed integers in contrib/blast -- Check for invalid code length codes in contrib/puff -- Fix serious but very rare decompression bug in inftrees.c -- Update inflateBack() comments, since inflate() can be faster -- Use underscored I/O function names for WINAPI_FAMILY -- Add _tr_flush_bits to the external symbols prefixed by --zprefix -- Add contrib/vstudio/vc10 pre-build step for static only -- Quote --version-script argument in CMakeLists.txt -- Don't specify --version-script on Apple platforms in CMakeLists.txt -- Fix casting error in contrib/testzlib/testzlib.c -- Fix types in contrib/minizip to match result of get_crc_table() -- Simplify contrib/vstudio/vc10 with 'd' suffix -- Add TOP support to win32/Makefile.msc -- Suport i686 and amd64 assembler builds in CMakeLists.txt -- Fix typos in the use of _LARGEFILE64_SOURCE in zconf.h -- Add vc11 and vc12 build files to contrib/vstudio -- Add gzvprintf() as an undocumented function in zlib -- Fix configure for Sun shell -- Remove runtime check in configure for four-byte integer type -- Add casts and consts to ease user conversion to C++ -- Add man pages for minizip and miniunzip -- In Makefile uninstall, don't rm if preceding cd fails -- Do not return Z_BUF_ERROR if deflateParam() has nothing to write - -Changes in 1.2.7 (2 May 2012) -- Replace use of memmove() with a simple copy for portability -- Test for existence of strerror -- Restore gzgetc_ for backward compatibility with 1.2.6 -- Fix build with non-GNU make on Solaris -- Require gcc 4.0 or later on Mac OS X to use the hidden attribute -- Include unistd.h for Watcom C -- Use __WATCOMC__ instead of __WATCOM__ -- Do not use the visibility attribute if NO_VIZ defined -- Improve the detection of no hidden visibility attribute -- Avoid using __int64 for gcc or solo compilation -- Cast to char * in gzprintf to avoid warnings [Zinser] -- Fix make_vms.com for VAX [Zinser] -- Don't use library or built-in byte swaps -- Simplify test and use of gcc hidden attribute -- Fix bug in gzclose_w() when gzwrite() fails to allocate memory -- Add "x" (O_EXCL) and "e" (O_CLOEXEC) modes support to gzopen() -- Fix bug in test/minigzip.c for configure --solo -- Fix contrib/vstudio project link errors [Mohanathas] -- Add ability to choose the builder in make_vms.com [Schweda] -- Add DESTDIR support to mingw32 win32/Makefile.gcc -- Fix comments in win32/Makefile.gcc for proper usage -- Allow overriding the default install locations for cmake -- Generate and install the pkg-config file with cmake -- Build both a static and a shared version of zlib with cmake -- Include version symbols for cmake builds -- If using cmake with MSVC, add the source directory to the includes -- Remove unneeded EXTRA_CFLAGS from win32/Makefile.gcc [Truta] -- Move obsolete emx makefile to old [Truta] -- Allow the use of -Wundef when compiling or using zlib -- Avoid the use of the -u option with mktemp -- Improve inflate() documentation on the use of Z_FINISH -- Recognize clang as gcc -- Add gzopen_w() in Windows for wide character path names -- Rename zconf.h in CMakeLists.txt to move it out of the way -- Add source directory in CMakeLists.txt for building examples -- Look in build directory for zlib.pc in CMakeLists.txt -- Remove gzflags from zlibvc.def in vc9 and vc10 -- Fix contrib/minizip compilation in the MinGW environment -- Update ./configure for Solaris, support --64 [Mooney] -- Remove -R. from Solaris shared build (possible security issue) -- Avoid race condition for parallel make (-j) running example -- Fix type mismatch between get_crc_table() and crc_table -- Fix parsing of version with "-" in CMakeLists.txt [Snider, Ziegler] -- Fix the path to zlib.map in CMakeLists.txt -- Force the native libtool in Mac OS X to avoid GNU libtool [Beebe] -- Add instructions to win32/Makefile.gcc for shared install [Torri] - -Changes in 1.2.6.1 (12 Feb 2012) -- Avoid the use of the Objective-C reserved name "id" -- Include io.h in gzguts.h for Microsoft compilers -- Fix problem with ./configure --prefix and gzgetc macro -- Include gz_header definition when compiling zlib solo -- Put gzflags() functionality back in zutil.c -- Avoid library header include in crc32.c for Z_SOLO -- Use name in GCC_CLASSIC as C compiler for coverage testing, if set -- Minor cleanup in contrib/minizip/zip.c [Vollant] -- Update make_vms.com [Zinser] -- Remove unnecessary gzgetc_ function -- Use optimized byte swap operations for Microsoft and GNU [Snyder] -- Fix minor typo in zlib.h comments [Rzesniowiecki] - -Changes in 1.2.6 (29 Jan 2012) -- Update the Pascal interface in contrib/pascal -- Fix function numbers for gzgetc_ in zlibvc.def files -- Fix configure.ac for contrib/minizip [Schiffer] -- Fix large-entry detection in minizip on 64-bit systems [Schiffer] -- Have ./configure use the compiler return code for error indication -- Fix CMakeLists.txt for cross compilation [McClure] -- Fix contrib/minizip/zip.c for 64-bit architectures [Dalsnes] -- Fix compilation of contrib/minizip on FreeBSD [Marquez] -- Correct suggested usages in win32/Makefile.msc [Shachar, Horvath] -- Include io.h for Turbo C / Borland C on all platforms [Truta] -- Make version explicit in contrib/minizip/configure.ac [Bosmans] -- Avoid warning for no encryption in contrib/minizip/zip.c [Vollant] -- Minor cleanup up contrib/minizip/unzip.c [Vollant] -- Fix bug when compiling minizip with C++ [Vollant] -- Protect for long name and extra fields in contrib/minizip [Vollant] -- Avoid some warnings in contrib/minizip [Vollant] -- Add -I../.. -L../.. to CFLAGS for minizip and miniunzip -- Add missing libs to minizip linker command -- Add support for VPATH builds in contrib/minizip -- Add an --enable-demos option to contrib/minizip/configure -- Add the generation of configure.log by ./configure -- Exit when required parameters not provided to win32/Makefile.gcc -- Have gzputc return the character written instead of the argument -- Use the -m option on ldconfig for BSD systems [Tobias] -- Correct in zlib.map when deflateResetKeep was added - -Changes in 1.2.5.3 (15 Jan 2012) -- Restore gzgetc function for binary compatibility -- Do not use _lseeki64 under Borland C++ [Truta] -- Update win32/Makefile.msc to build test/*.c [Truta] -- Remove old/visualc6 given CMakefile and other alternatives -- Update AS400 build files and documentation [Monnerat] -- Update win32/Makefile.gcc to build test/*.c [Truta] -- Permit stronger flushes after Z_BLOCK flushes -- Avoid extraneous empty blocks when doing empty flushes -- Permit Z_NULL arguments to deflatePending -- Allow deflatePrime() to insert bits in the middle of a stream -- Remove second empty static block for Z_PARTIAL_FLUSH -- Write out all of the available bits when using Z_BLOCK -- Insert the first two strings in the hash table after a flush - -Changes in 1.2.5.2 (17 Dec 2011) -- fix ld error: unable to find version dependency 'ZLIB_1.2.5' -- use relative symlinks for shared libs -- Avoid searching past window for Z_RLE strategy -- Assure that high-water mark initialization is always applied in deflate -- Add assertions to fill_window() in deflate.c to match comments -- Update python link in README -- Correct spelling error in gzread.c -- Fix bug in gzgets() for a concatenated empty gzip stream -- Correct error in comment for gz_make() -- Change gzread() and related to ignore junk after gzip streams -- Allow gzread() and related to continue after gzclearerr() -- Allow gzrewind() and gzseek() after a premature end-of-file -- Simplify gzseek() now that raw after gzip is ignored -- Change gzgetc() to a macro for speed (~40% speedup in testing) -- Fix gzclose() to return the actual error last encountered -- Always add large file support for windows -- Include zconf.h for windows large file support -- Include zconf.h.cmakein for windows large file support -- Update zconf.h.cmakein on make distclean -- Merge vestigial vsnprintf determination from zutil.h to gzguts.h -- Clarify how gzopen() appends in zlib.h comments -- Correct documentation of gzdirect() since junk at end now ignored -- Add a transparent write mode to gzopen() when 'T' is in the mode -- Update python link in zlib man page -- Get inffixed.h and MAKEFIXED result to match -- Add a ./config --solo option to make zlib subset with no library use -- Add undocumented inflateResetKeep() function for CAB file decoding -- Add --cover option to ./configure for gcc coverage testing -- Add #define ZLIB_CONST option to use const in the z_stream interface -- Add comment to gzdopen() in zlib.h to use dup() when using fileno() -- Note behavior of uncompress() to provide as much data as it can -- Add files in contrib/minizip to aid in building libminizip -- Split off AR options in Makefile.in and configure -- Change ON macro to Z_ARG to avoid application conflicts -- Facilitate compilation with Borland C++ for pragmas and vsnprintf -- Include io.h for Turbo C / Borland C++ -- Move example.c and minigzip.c to test/ -- Simplify incomplete code table filling in inflate_table() -- Remove code from inflate.c and infback.c that is impossible to execute -- Test the inflate code with full coverage -- Allow deflateSetDictionary, inflateSetDictionary at any time (in raw) -- Add deflateResetKeep and fix inflateResetKeep to retain dictionary -- Fix gzwrite.c to accommodate reduced memory zlib compilation -- Have inflate() with Z_FINISH avoid the allocation of a window -- Do not set strm->adler when doing raw inflate -- Fix gzeof() to behave just like feof() when read is not past end of file -- Fix bug in gzread.c when end-of-file is reached -- Avoid use of Z_BUF_ERROR in gz* functions except for premature EOF -- Document gzread() capability to read concurrently written files -- Remove hard-coding of resource compiler in CMakeLists.txt [Blammo] - -Changes in 1.2.5.1 (10 Sep 2011) -- Update FAQ entry on shared builds (#13) -- Avoid symbolic argument to chmod in Makefile.in -- Fix bug and add consts in contrib/puff [Oberhumer] -- Update contrib/puff/zeros.raw test file to have all block types -- Add full coverage test for puff in contrib/puff/Makefile -- Fix static-only-build install in Makefile.in -- Fix bug in unzGetCurrentFileInfo() in contrib/minizip [Kuno] -- Add libz.a dependency to shared in Makefile.in for parallel builds -- Spell out "number" (instead of "nb") in zlib.h for total_in, total_out -- Replace $(...) with `...` in configure for non-bash sh [Bowler] -- Add darwin* to Darwin* and solaris* to SunOS\ 5* in configure [Groffen] -- Add solaris* to Linux* in configure to allow gcc use [Groffen] -- Add *bsd* to Linux* case in configure [Bar-Lev] -- Add inffast.obj to dependencies in win32/Makefile.msc -- Correct spelling error in deflate.h [Kohler] -- Change libzdll.a again to libz.dll.a (!) in win32/Makefile.gcc -- Add test to configure for GNU C looking for gcc in output of $cc -v -- Add zlib.pc generation to win32/Makefile.gcc [Weigelt] -- Fix bug in zlib.h for _FILE_OFFSET_BITS set and _LARGEFILE64_SOURCE not -- Add comment in zlib.h that adler32_combine with len2 < 0 makes no sense -- Make NO_DIVIDE option in adler32.c much faster (thanks to John Reiser) -- Make stronger test in zconf.h to include unistd.h for LFS -- Apply Darwin patches for 64-bit file offsets to contrib/minizip [Slack] -- Fix zlib.h LFS support when Z_PREFIX used -- Add updated as400 support (removed from old) [Monnerat] -- Avoid deflate sensitivity to volatile input data -- Avoid division in adler32_combine for NO_DIVIDE -- Clarify the use of Z_FINISH with deflateBound() amount of space -- Set binary for output file in puff.c -- Use u4 type for crc_table to avoid conversion warnings -- Apply casts in zlib.h to avoid conversion warnings -- Add OF to prototypes for adler32_combine_ and crc32_combine_ [Miller] -- Improve inflateSync() documentation to note indeterminancy -- Add deflatePending() function to return the amount of pending output -- Correct the spelling of "specification" in FAQ [Randers-Pehrson] -- Add a check in configure for stdarg.h, use for gzprintf() -- Check that pointers fit in ints when gzprint() compiled old style -- Add dummy name before $(SHAREDLIBV) in Makefile [Bar-Lev, Bowler] -- Delete line in configure that adds -L. libz.a to LDFLAGS [Weigelt] -- Add debug records in assmebler code [Londer] -- Update RFC references to use http://tools.ietf.org/html/... [Li] -- Add --archs option, use of libtool to configure for Mac OS X [Borstel] - -Changes in 1.2.5 (19 Apr 2010) -- Disable visibility attribute in win32/Makefile.gcc [Bar-Lev] -- Default to libdir as sharedlibdir in configure [Nieder] -- Update copyright dates on modified source files -- Update trees.c to be able to generate modified trees.h -- Exit configure for MinGW, suggesting win32/Makefile.gcc -- Check for NULL path in gz_open [Homurlu] - -Changes in 1.2.4.5 (18 Apr 2010) -- Set sharedlibdir in configure [Torok] -- Set LDFLAGS in Makefile.in [Bar-Lev] -- Avoid mkdir objs race condition in Makefile.in [Bowler] -- Add ZLIB_INTERNAL in front of internal inter-module functions and arrays -- Define ZLIB_INTERNAL to hide internal functions and arrays for GNU C -- Don't use hidden attribute when it is a warning generator (e.g. Solaris) - -Changes in 1.2.4.4 (18 Apr 2010) -- Fix CROSS_PREFIX executable testing, CHOST extract, mingw* [Torok] -- Undefine _LARGEFILE64_SOURCE in zconf.h if it is zero, but not if empty -- Try to use bash or ksh regardless of functionality of /bin/sh -- Fix configure incompatibility with NetBSD sh -- Remove attempt to run under bash or ksh since have better NetBSD fix -- Fix win32/Makefile.gcc for MinGW [Bar-Lev] -- Add diagnostic messages when using CROSS_PREFIX in configure -- Added --sharedlibdir option to configure [Weigelt] -- Use hidden visibility attribute when available [Frysinger] - -Changes in 1.2.4.3 (10 Apr 2010) -- Only use CROSS_PREFIX in configure for ar and ranlib if they exist -- Use CROSS_PREFIX for nm [Bar-Lev] -- Assume _LARGEFILE64_SOURCE defined is equivalent to true -- Avoid use of undefined symbols in #if with && and || -- Make *64 prototypes in gzguts.h consistent with functions -- Add -shared load option for MinGW in configure [Bowler] -- Move z_off64_t to public interface, use instead of off64_t -- Remove ! from shell test in configure (not portable to Solaris) -- Change +0 macro tests to -0 for possibly increased portability - -Changes in 1.2.4.2 (9 Apr 2010) -- Add consistent carriage returns to readme.txt's in masmx86 and masmx64 -- Really provide prototypes for *64 functions when building without LFS -- Only define unlink() in minigzip.c if unistd.h not included -- Update README to point to contrib/vstudio project files -- Move projects/vc6 to old/ and remove projects/ -- Include stdlib.h in minigzip.c for setmode() definition under WinCE -- Clean up assembler builds in win32/Makefile.msc [Rowe] -- Include sys/types.h for Microsoft for off_t definition -- Fix memory leak on error in gz_open() -- Symbolize nm as $NM in configure [Weigelt] -- Use TEST_LDSHARED instead of LDSHARED to link test programs [Weigelt] -- Add +0 to _FILE_OFFSET_BITS and _LFS64_LARGEFILE in case not defined -- Fix bug in gzeof() to take into account unused input data -- Avoid initialization of structures with variables in puff.c -- Updated win32/README-WIN32.txt [Rowe] - -Changes in 1.2.4.1 (28 Mar 2010) -- Remove the use of [a-z] constructs for sed in configure [gentoo 310225] -- Remove $(SHAREDLIB) from LIBS in Makefile.in [Creech] -- Restore "for debugging" comment on sprintf() in gzlib.c -- Remove fdopen for MVS from gzguts.h -- Put new README-WIN32.txt in win32 [Rowe] -- Add check for shell to configure and invoke another shell if needed -- Fix big fat stinking bug in gzseek() on uncompressed files -- Remove vestigial F_OPEN64 define in zutil.h -- Set and check the value of _LARGEFILE_SOURCE and _LARGEFILE64_SOURCE -- Avoid errors on non-LFS systems when applications define LFS macros -- Set EXE to ".exe" in configure for MINGW [Kahle] -- Match crc32() in crc32.c exactly to the prototype in zlib.h [Sherrill] -- Add prefix for cross-compilation in win32/makefile.gcc [Bar-Lev] -- Add DLL install in win32/makefile.gcc [Bar-Lev] -- Allow Linux* or linux* from uname in configure [Bar-Lev] -- Allow ldconfig to be redefined in configure and Makefile.in [Bar-Lev] -- Add cross-compilation prefixes to configure [Bar-Lev] -- Match type exactly in gz_load() invocation in gzread.c -- Match type exactly of zcalloc() in zutil.c to zlib.h alloc_func -- Provide prototypes for *64 functions when building zlib without LFS -- Don't use -lc when linking shared library on MinGW -- Remove errno.h check in configure and vestigial errno code in zutil.h - -Changes in 1.2.4 (14 Mar 2010) -- Fix VER3 extraction in configure for no fourth subversion -- Update zlib.3, add docs to Makefile.in to make .pdf out of it -- Add zlib.3.pdf to distribution -- Don't set error code in gzerror() if passed pointer is NULL -- Apply destination directory fixes to CMakeLists.txt [Lowman] -- Move #cmakedefine's to a new zconf.in.cmakein -- Restore zconf.h for builds that don't use configure or cmake -- Add distclean to dummy Makefile for convenience -- Update and improve INDEX, README, and FAQ -- Update CMakeLists.txt for the return of zconf.h [Lowman] -- Update contrib/vstudio/vc9 and vc10 [Vollant] -- Change libz.dll.a back to libzdll.a in win32/Makefile.gcc -- Apply license and readme changes to contrib/asm686 [Raiter] -- Check file name lengths and add -c option in minigzip.c [Li] -- Update contrib/amd64 and contrib/masmx86/ [Vollant] -- Avoid use of "eof" parameter in trees.c to not shadow library variable -- Update make_vms.com for removal of zlibdefs.h [Zinser] -- Update assembler code and vstudio projects in contrib [Vollant] -- Remove outdated assembler code contrib/masm686 and contrib/asm586 -- Remove old vc7 and vc8 from contrib/vstudio -- Update win32/Makefile.msc, add ZLIB_VER_SUBREVISION [Rowe] -- Fix memory leaks in gzclose_r() and gzclose_w(), file leak in gz_open() -- Add contrib/gcc_gvmat64 for longest_match and inflate_fast [Vollant] -- Remove *64 functions from win32/zlib.def (they're not 64-bit yet) -- Fix bug in void-returning vsprintf() case in gzwrite.c -- Fix name change from inflate.h in contrib/inflate86/inffas86.c -- Check if temporary file exists before removing in make_vms.com [Zinser] -- Fix make install and uninstall for --static option -- Fix usage of _MSC_VER in gzguts.h and zutil.h [Truta] -- Update readme.txt in contrib/masmx64 and masmx86 to assemble - -Changes in 1.2.3.9 (21 Feb 2010) -- Expunge gzio.c -- Move as400 build information to old -- Fix updates in contrib/minizip and contrib/vstudio -- Add const to vsnprintf test in configure to avoid warnings [Weigelt] -- Delete zconf.h (made by configure) [Weigelt] -- Change zconf.in.h to zconf.h.in per convention [Weigelt] -- Check for NULL buf in gzgets() -- Return empty string for gzgets() with len == 1 (like fgets()) -- Fix description of gzgets() in zlib.h for end-of-file, NULL return -- Update minizip to 1.1 [Vollant] -- Avoid MSVC loss of data warnings in gzread.c, gzwrite.c -- Note in zlib.h that gzerror() should be used to distinguish from EOF -- Remove use of snprintf() from gzlib.c -- Fix bug in gzseek() -- Update contrib/vstudio, adding vc9 and vc10 [Kuno, Vollant] -- Fix zconf.h generation in CMakeLists.txt [Lowman] -- Improve comments in zconf.h where modified by configure - -Changes in 1.2.3.8 (13 Feb 2010) -- Clean up text files (tabs, trailing whitespace, etc.) [Oberhumer] -- Use z_off64_t in gz_zero() and gz_skip() to match state->skip -- Avoid comparison problem when sizeof(int) == sizeof(z_off64_t) -- Revert to Makefile.in from 1.2.3.6 (live with the clutter) -- Fix missing error return in gzflush(), add zlib.h note -- Add *64 functions to zlib.map [Levin] -- Fix signed/unsigned comparison in gz_comp() -- Use SFLAGS when testing shared linking in configure -- Add --64 option to ./configure to use -m64 with gcc -- Fix ./configure --help to correctly name options -- Have make fail if a test fails [Levin] -- Avoid buffer overrun in contrib/masmx64/gvmat64.asm [Simpson] -- Remove assembler object files from contrib - -Changes in 1.2.3.7 (24 Jan 2010) -- Always gzopen() with O_LARGEFILE if available -- Fix gzdirect() to work immediately after gzopen() or gzdopen() -- Make gzdirect() more precise when the state changes while reading -- Improve zlib.h documentation in many places -- Catch memory allocation failure in gz_open() -- Complete close operation if seek forward in gzclose_w() fails -- Return Z_ERRNO from gzclose_r() if close() fails -- Return Z_STREAM_ERROR instead of EOF for gzclose() being passed NULL -- Return zero for gzwrite() errors to match zlib.h description -- Return -1 on gzputs() error to match zlib.h description -- Add zconf.in.h to allow recovery from configure modification [Weigelt] -- Fix static library permissions in Makefile.in [Weigelt] -- Avoid warnings in configure tests that hide functionality [Weigelt] -- Add *BSD and DragonFly to Linux case in configure [gentoo 123571] -- Change libzdll.a to libz.dll.a in win32/Makefile.gcc [gentoo 288212] -- Avoid access of uninitialized data for first inflateReset2 call [Gomes] -- Keep object files in subdirectories to reduce the clutter somewhat -- Remove default Makefile and zlibdefs.h, add dummy Makefile -- Add new external functions to Z_PREFIX, remove duplicates, z_z_ -> z_ -- Remove zlibdefs.h completely -- modify zconf.h instead - -Changes in 1.2.3.6 (17 Jan 2010) -- Avoid void * arithmetic in gzread.c and gzwrite.c -- Make compilers happier with const char * for gz_error message -- Avoid unused parameter warning in inflate.c -- Avoid signed-unsigned comparison warning in inflate.c -- Indent #pragma's for traditional C -- Fix usage of strwinerror() in glib.c, change to gz_strwinerror() -- Correct email address in configure for system options -- Update make_vms.com and add make_vms.com to contrib/minizip [Zinser] -- Update zlib.map [Brown] -- Fix Makefile.in for Solaris 10 make of example64 and minizip64 [Torok] -- Apply various fixes to CMakeLists.txt [Lowman] -- Add checks on len in gzread() and gzwrite() -- Add error message for no more room for gzungetc() -- Remove zlib version check in gzwrite() -- Defer compression of gzprintf() result until need to -- Use snprintf() in gzdopen() if available -- Remove USE_MMAP configuration determination (only used by minigzip) -- Remove examples/pigz.c (available separately) -- Update examples/gun.c to 1.6 - -Changes in 1.2.3.5 (8 Jan 2010) -- Add space after #if in zutil.h for some compilers -- Fix relatively harmless bug in deflate_fast() [Exarevsky] -- Fix same problem in deflate_slow() -- Add $(SHAREDLIBV) to LIBS in Makefile.in [Brown] -- Add deflate_rle() for faster Z_RLE strategy run-length encoding -- Add deflate_huff() for faster Z_HUFFMAN_ONLY encoding -- Change name of "write" variable in inffast.c to avoid library collisions -- Fix premature EOF from gzread() in gzio.c [Brown] -- Use zlib header window size if windowBits is 0 in inflateInit2() -- Remove compressBound() call in deflate.c to avoid linking compress.o -- Replace use of errno in gz* with functions, support WinCE [Alves] -- Provide alternative to perror() in minigzip.c for WinCE [Alves] -- Don't use _vsnprintf on later versions of MSVC [Lowman] -- Add CMake build script and input file [Lowman] -- Update contrib/minizip to 1.1 [Svensson, Vollant] -- Moved nintendods directory from contrib to . -- Replace gzio.c with a new set of routines with the same functionality -- Add gzbuffer(), gzoffset(), gzclose_r(), gzclose_w() as part of above -- Update contrib/minizip to 1.1b -- Change gzeof() to return 0 on error instead of -1 to agree with zlib.h - -Changes in 1.2.3.4 (21 Dec 2009) -- Use old school .SUFFIXES in Makefile.in for FreeBSD compatibility -- Update comments in configure and Makefile.in for default --shared -- Fix test -z's in configure [Marquess] -- Build examplesh and minigzipsh when not testing -- Change NULL's to Z_NULL's in deflate.c and in comments in zlib.h -- Import LDFLAGS from the environment in configure -- Fix configure to populate SFLAGS with discovered CFLAGS options -- Adapt make_vms.com to the new Makefile.in [Zinser] -- Add zlib2ansi script for C++ compilation [Marquess] -- Add _FILE_OFFSET_BITS=64 test to make test (when applicable) -- Add AMD64 assembler code for longest match to contrib [Teterin] -- Include options from $SFLAGS when doing $LDSHARED -- Simplify 64-bit file support by introducing z_off64_t type -- Make shared object files in objs directory to work around old Sun cc -- Use only three-part version number for Darwin shared compiles -- Add rc option to ar in Makefile.in for when ./configure not run -- Add -WI,-rpath,. to LDFLAGS for OSF 1 V4* -- Set LD_LIBRARYN32_PATH for SGI IRIX shared compile -- Protect against _FILE_OFFSET_BITS being defined when compiling zlib -- Rename Makefile.in targets allstatic to static and allshared to shared -- Fix static and shared Makefile.in targets to be independent -- Correct error return bug in gz_open() by setting state [Brown] -- Put spaces before ;;'s in configure for better sh compatibility -- Add pigz.c (parallel implementation of gzip) to examples/ -- Correct constant in crc32.c to UL [Leventhal] -- Reject negative lengths in crc32_combine() -- Add inflateReset2() function to work like inflateEnd()/inflateInit2() -- Include sys/types.h for _LARGEFILE64_SOURCE [Brown] -- Correct typo in doc/algorithm.txt [Janik] -- Fix bug in adler32_combine() [Zhu] -- Catch missing-end-of-block-code error in all inflates and in puff - Assures that random input to inflate eventually results in an error -- Added enough.c (calculation of ENOUGH for inftrees.h) to examples/ -- Update ENOUGH and its usage to reflect discovered bounds -- Fix gzerror() error report on empty input file [Brown] -- Add ush casts in trees.c to avoid pedantic runtime errors -- Fix typo in zlib.h uncompress() description [Reiss] -- Correct inflate() comments with regard to automatic header detection -- Remove deprecation comment on Z_PARTIAL_FLUSH (it stays) -- Put new version of gzlog (2.0) in examples with interruption recovery -- Add puff compile option to permit invalid distance-too-far streams -- Add puff TEST command options, ability to read piped input -- Prototype the *64 functions in zlib.h when _FILE_OFFSET_BITS == 64, but - _LARGEFILE64_SOURCE not defined -- Fix Z_FULL_FLUSH to truly erase the past by resetting s->strstart -- Fix deflateSetDictionary() to use all 32K for output consistency -- Remove extraneous #define MIN_LOOKAHEAD in deflate.c (in deflate.h) -- Clear bytes after deflate lookahead to avoid use of uninitialized data -- Change a limit in inftrees.c to be more transparent to Coverity Prevent -- Update win32/zlib.def with exported symbols from zlib.h -- Correct spelling errors in zlib.h [Willem, Sobrado] -- Allow Z_BLOCK for deflate() to force a new block -- Allow negative bits in inflatePrime() to delete existing bit buffer -- Add Z_TREES flush option to inflate() to return at end of trees -- Add inflateMark() to return current state information for random access -- Add Makefile for NintendoDS to contrib [Costa] -- Add -w in configure compile tests to avoid spurious warnings [Beucler] -- Fix typos in zlib.h comments for deflateSetDictionary() -- Fix EOF detection in transparent gzread() [Maier] - -Changes in 1.2.3.3 (2 October 2006) -- Make --shared the default for configure, add a --static option -- Add compile option to permit invalid distance-too-far streams -- Add inflateUndermine() function which is required to enable above -- Remove use of "this" variable name for C++ compatibility [Marquess] -- Add testing of shared library in make test, if shared library built -- Use ftello() and fseeko() if available instead of ftell() and fseek() -- Provide two versions of all functions that use the z_off_t type for - binary compatibility -- a normal version and a 64-bit offset version, - per the Large File Support Extension when _LARGEFILE64_SOURCE is - defined; use the 64-bit versions by default when _FILE_OFFSET_BITS - is defined to be 64 -- Add a --uname= option to configure to perhaps help with cross-compiling - -Changes in 1.2.3.2 (3 September 2006) -- Turn off silly Borland warnings [Hay] -- Use off64_t and define _LARGEFILE64_SOURCE when present -- Fix missing dependency on inffixed.h in Makefile.in -- Rig configure --shared to build both shared and static [Teredesai, Truta] -- Remove zconf.in.h and instead create a new zlibdefs.h file -- Fix contrib/minizip/unzip.c non-encrypted after encrypted [Vollant] -- Add treebuild.xml (see http://treebuild.metux.de/) [Weigelt] - -Changes in 1.2.3.1 (16 August 2006) -- Add watcom directory with OpenWatcom make files [Daniel] -- Remove #undef of FAR in zconf.in.h for MVS [Fedtke] -- Update make_vms.com [Zinser] -- Use -fPIC for shared build in configure [Teredesai, Nicholson] -- Use only major version number for libz.so on IRIX and OSF1 [Reinholdtsen] -- Use fdopen() (not _fdopen()) for Interix in zutil.h [Bäck] -- Add some FAQ entries about the contrib directory -- Update the MVS question in the FAQ -- Avoid extraneous reads after EOF in gzio.c [Brown] -- Correct spelling of "successfully" in gzio.c [Randers-Pehrson] -- Add comments to zlib.h about gzerror() usage [Brown] -- Set extra flags in gzip header in gzopen() like deflate() does -- Make configure options more compatible with double-dash conventions - [Weigelt] -- Clean up compilation under Solaris SunStudio cc [Rowe, Reinholdtsen] -- Fix uninstall target in Makefile.in [Truta] -- Add pkgconfig support [Weigelt] -- Use $(DESTDIR) macro in Makefile.in [Reinholdtsen, Weigelt] -- Replace set_data_type() with a more accurate detect_data_type() in - trees.c, according to the txtvsbin.txt document [Truta] -- Swap the order of #include and #include "zlib.h" in - gzio.c, example.c and minigzip.c [Truta] -- Shut up annoying VS2005 warnings about standard C deprecation [Rowe, - Truta] (where?) -- Fix target "clean" from win32/Makefile.bor [Truta] -- Create .pdb and .manifest files in win32/makefile.msc [Ziegler, Rowe] -- Update zlib www home address in win32/DLL_FAQ.txt [Truta] -- Update contrib/masmx86/inffas32.asm for VS2005 [Vollant, Van Wassenhove] -- Enable browse info in the "Debug" and "ASM Debug" configurations in - the Visual C++ 6 project, and set (non-ASM) "Debug" as default [Truta] -- Add pkgconfig support [Weigelt] -- Add ZLIB_VER_MAJOR, ZLIB_VER_MINOR and ZLIB_VER_REVISION in zlib.h, - for use in win32/zlib1.rc [Polushin, Rowe, Truta] -- Add a document that explains the new text detection scheme to - doc/txtvsbin.txt [Truta] -- Add rfc1950.txt, rfc1951.txt and rfc1952.txt to doc/ [Truta] -- Move algorithm.txt into doc/ [Truta] -- Synchronize FAQ with website -- Fix compressBound(), was low for some pathological cases [Fearnley] -- Take into account wrapper variations in deflateBound() -- Set examples/zpipe.c input and output to binary mode for Windows -- Update examples/zlib_how.html with new zpipe.c (also web site) -- Fix some warnings in examples/gzlog.c and examples/zran.c (it seems - that gcc became pickier in 4.0) -- Add zlib.map for Linux: "All symbols from zlib-1.1.4 remain - un-versioned, the patch adds versioning only for symbols introduced in - zlib-1.2.0 or later. It also declares as local those symbols which are - not designed to be exported." [Levin] -- Update Z_PREFIX list in zconf.in.h, add --zprefix option to configure -- Do not initialize global static by default in trees.c, add a response - NO_INIT_GLOBAL_POINTERS to initialize them if needed [Marquess] -- Don't use strerror() in gzio.c under WinCE [Yakimov] -- Don't use errno.h in zutil.h under WinCE [Yakimov] -- Move arguments for AR to its usage to allow replacing ar [Marot] -- Add HAVE_VISIBILITY_PRAGMA in zconf.in.h for Mozilla [Randers-Pehrson] -- Improve inflateInit() and inflateInit2() documentation -- Fix structure size comment in inflate.h -- Change configure help option from --h* to --help [Santos] - -Changes in 1.2.3 (18 July 2005) -- Apply security vulnerability fixes to contrib/infback9 as well -- Clean up some text files (carriage returns, trailing space) -- Update testzlib, vstudio, masmx64, and masmx86 in contrib [Vollant] - -Changes in 1.2.2.4 (11 July 2005) -- Add inflatePrime() function for starting inflation at bit boundary -- Avoid some Visual C warnings in deflate.c -- Avoid more silly Visual C warnings in inflate.c and inftrees.c for 64-bit - compile -- Fix some spelling errors in comments [Betts] -- Correct inflateInit2() error return documentation in zlib.h -- Add zran.c example of compressed data random access to examples - directory, shows use of inflatePrime() -- Fix cast for assignments to strm->state in inflate.c and infback.c -- Fix zlibCompileFlags() in zutil.c to use 1L for long shifts [Oberhumer] -- Move declarations of gf2 functions to right place in crc32.c [Oberhumer] -- Add cast in trees.c t avoid a warning [Oberhumer] -- Avoid some warnings in fitblk.c, gun.c, gzjoin.c in examples [Oberhumer] -- Update make_vms.com [Zinser] -- Initialize state->write in inflateReset() since copied in inflate_fast() -- Be more strict on incomplete code sets in inflate_table() and increase - ENOUGH and MAXD -- this repairs a possible security vulnerability for - invalid inflate input. Thanks to Tavis Ormandy and Markus Oberhumer for - discovering the vulnerability and providing test cases. -- Add ia64 support to configure for HP-UX [Smith] -- Add error return to gzread() for format or i/o error [Levin] -- Use malloc.h for OS/2 [Necasek] - -Changes in 1.2.2.3 (27 May 2005) -- Replace 1U constants in inflate.c and inftrees.c for 64-bit compile -- Typecast fread() return values in gzio.c [Vollant] -- Remove trailing space in minigzip.c outmode (VC++ can't deal with it) -- Fix crc check bug in gzread() after gzungetc() [Heiner] -- Add the deflateTune() function to adjust internal compression parameters -- Add a fast gzip decompressor, gun.c, to examples (use of inflateBack) -- Remove an incorrect assertion in examples/zpipe.c -- Add C++ wrapper in infback9.h [Donais] -- Fix bug in inflateCopy() when decoding fixed codes -- Note in zlib.h how much deflateSetDictionary() actually uses -- Remove USE_DICT_HEAD in deflate.c (would mess up inflate if used) -- Add _WIN32_WCE to define WIN32 in zconf.in.h [Spencer] -- Don't include stderr.h or errno.h for _WIN32_WCE in zutil.h [Spencer] -- Add gzdirect() function to indicate transparent reads -- Update contrib/minizip [Vollant] -- Fix compilation of deflate.c when both ASMV and FASTEST [Oberhumer] -- Add casts in crc32.c to avoid warnings [Oberhumer] -- Add contrib/masmx64 [Vollant] -- Update contrib/asm586, asm686, masmx86, testzlib, vstudio [Vollant] - -Changes in 1.2.2.2 (30 December 2004) -- Replace structure assignments in deflate.c and inflate.c with zmemcpy to - avoid implicit memcpy calls (portability for no-library compilation) -- Increase sprintf() buffer size in gzdopen() to allow for large numbers -- Add INFLATE_STRICT to check distances against zlib header -- Improve WinCE errno handling and comments [Chang] -- Remove comment about no gzip header processing in FAQ -- Add Z_FIXED strategy option to deflateInit2() to force fixed trees -- Add updated make_vms.com [Coghlan], update README -- Create a new "examples" directory, move gzappend.c there, add zpipe.c, - fitblk.c, gzlog.[ch], gzjoin.c, and zlib_how.html. -- Add FAQ entry and comments in deflate.c on uninitialized memory access -- Add Solaris 9 make options in configure [Gilbert] -- Allow strerror() usage in gzio.c for STDC -- Fix DecompressBuf in contrib/delphi/ZLib.pas [ManChesTer] -- Update contrib/masmx86/inffas32.asm and gvmat32.asm [Vollant] -- Use z_off_t for adler32_combine() and crc32_combine() lengths -- Make adler32() much faster for small len -- Use OS_CODE in deflate() default gzip header - -Changes in 1.2.2.1 (31 October 2004) -- Allow inflateSetDictionary() call for raw inflate -- Fix inflate header crc check bug for file names and comments -- Add deflateSetHeader() and gz_header structure for custom gzip headers -- Add inflateGetheader() to retrieve gzip headers -- Add crc32_combine() and adler32_combine() functions -- Add alloc_func, free_func, in_func, out_func to Z_PREFIX list -- Use zstreamp consistently in zlib.h (inflate_back functions) -- Remove GUNZIP condition from definition of inflate_mode in inflate.h - and in contrib/inflate86/inffast.S [Truta, Anderson] -- Add support for AMD64 in contrib/inflate86/inffas86.c [Anderson] -- Update projects/README.projects and projects/visualc6 [Truta] -- Update win32/DLL_FAQ.txt [Truta] -- Avoid warning under NO_GZCOMPRESS in gzio.c; fix typo [Truta] -- Deprecate Z_ASCII; use Z_TEXT instead [Truta] -- Use a new algorithm for setting strm->data_type in trees.c [Truta] -- Do not define an exit() prototype in zutil.c unless DEBUG defined -- Remove prototype of exit() from zutil.c, example.c, minigzip.c [Truta] -- Add comment in zlib.h for Z_NO_FLUSH parameter to deflate() -- Fix Darwin build version identification [Peterson] - -Changes in 1.2.2 (3 October 2004) -- Update zlib.h comments on gzip in-memory processing -- Set adler to 1 in inflateReset() to support Java test suite [Walles] -- Add contrib/dotzlib [Ravn] -- Update win32/DLL_FAQ.txt [Truta] -- Update contrib/minizip [Vollant] -- Move contrib/visual-basic.txt to old/ [Truta] -- Fix assembler builds in projects/visualc6/ [Truta] - -Changes in 1.2.1.2 (9 September 2004) -- Update INDEX file -- Fix trees.c to update strm->data_type (no one ever noticed!) -- Fix bug in error case in inflate.c, infback.c, and infback9.c [Brown] -- Add "volatile" to crc table flag declaration (for DYNAMIC_CRC_TABLE) -- Add limited multitasking protection to DYNAMIC_CRC_TABLE -- Add NO_vsnprintf for VMS in zutil.h [Mozilla] -- Don't declare strerror() under VMS [Mozilla] -- Add comment to DYNAMIC_CRC_TABLE to use get_crc_table() to initialize -- Update contrib/ada [Anisimkov] -- Update contrib/minizip [Vollant] -- Fix configure to not hardcode directories for Darwin [Peterson] -- Fix gzio.c to not return error on empty files [Brown] -- Fix indentation; update version in contrib/delphi/ZLib.pas and - contrib/pascal/zlibpas.pas [Truta] -- Update mkasm.bat in contrib/masmx86 [Truta] -- Update contrib/untgz [Truta] -- Add projects/README.projects [Truta] -- Add project for MS Visual C++ 6.0 in projects/visualc6 [Cadieux, Truta] -- Update win32/DLL_FAQ.txt [Truta] -- Update list of Z_PREFIX symbols in zconf.h [Randers-Pehrson, Truta] -- Remove an unnecessary assignment to curr in inftrees.c [Truta] -- Add OS/2 to exe builds in configure [Poltorak] -- Remove err dummy parameter in zlib.h [Kientzle] - -Changes in 1.2.1.1 (9 January 2004) -- Update email address in README -- Several FAQ updates -- Fix a big fat bug in inftrees.c that prevented decoding valid - dynamic blocks with only literals and no distance codes -- - Thanks to "Hot Emu" for the bug report and sample file -- Add a note to puff.c on no distance codes case. - -Changes in 1.2.1 (17 November 2003) -- Remove a tab in contrib/gzappend/gzappend.c -- Update some interfaces in contrib for new zlib functions -- Update zlib version number in some contrib entries -- Add Windows CE definition for ptrdiff_t in zutil.h [Mai, Truta] -- Support shared libraries on Hurd and KFreeBSD [Brown] -- Fix error in NO_DIVIDE option of adler32.c - -Changes in 1.2.0.8 (4 November 2003) -- Update version in contrib/delphi/ZLib.pas and contrib/pascal/zlibpas.pas -- Add experimental NO_DIVIDE #define in adler32.c - - Possibly faster on some processors (let me know if it is) -- Correct Z_BLOCK to not return on first inflate call if no wrap -- Fix strm->data_type on inflate() return to correctly indicate EOB -- Add deflatePrime() function for appending in the middle of a byte -- Add contrib/gzappend for an example of appending to a stream -- Update win32/DLL_FAQ.txt [Truta] -- Delete Turbo C comment in README [Truta] -- Improve some indentation in zconf.h [Truta] -- Fix infinite loop on bad input in configure script [Church] -- Fix gzeof() for concatenated gzip files [Johnson] -- Add example to contrib/visual-basic.txt [Michael B.] -- Add -p to mkdir's in Makefile.in [vda] -- Fix configure to properly detect presence or lack of printf functions -- Add AS400 support [Monnerat] -- Add a little Cygwin support [Wilson] - -Changes in 1.2.0.7 (21 September 2003) -- Correct some debug formats in contrib/infback9 -- Cast a type in a debug statement in trees.c -- Change search and replace delimiter in configure from % to # [Beebe] -- Update contrib/untgz to 0.2 with various fixes [Truta] -- Add build support for Amiga [Nikl] -- Remove some directories in old that have been updated to 1.2 -- Add dylib building for Mac OS X in configure and Makefile.in -- Remove old distribution stuff from Makefile -- Update README to point to DLL_FAQ.txt, and add comment on Mac OS X -- Update links in README - -Changes in 1.2.0.6 (13 September 2003) -- Minor FAQ updates -- Update contrib/minizip to 1.00 [Vollant] -- Remove test of gz functions in example.c when GZ_COMPRESS defined [Truta] -- Update POSTINC comment for 68060 [Nikl] -- Add contrib/infback9 with deflate64 decoding (unsupported) -- For MVS define NO_vsnprintf and undefine FAR [van Burik] -- Add pragma for fdopen on MVS [van Burik] - -Changes in 1.2.0.5 (8 September 2003) -- Add OF to inflateBackEnd() declaration in zlib.h -- Remember start when using gzdopen in the middle of a file -- Use internal off_t counters in gz* functions to properly handle seeks -- Perform more rigorous check for distance-too-far in inffast.c -- Add Z_BLOCK flush option to return from inflate at block boundary -- Set strm->data_type on return from inflate - - Indicate bits unused, if at block boundary, and if in last block -- Replace size_t with ptrdiff_t in crc32.c, and check for correct size -- Add condition so old NO_DEFLATE define still works for compatibility -- FAQ update regarding the Windows DLL [Truta] -- INDEX update: add qnx entry, remove aix entry [Truta] -- Install zlib.3 into mandir [Wilson] -- Move contrib/zlib_dll_FAQ.txt to win32/DLL_FAQ.txt; update [Truta] -- Adapt the zlib interface to the new DLL convention guidelines [Truta] -- Introduce ZLIB_WINAPI macro to allow the export of functions using - the WINAPI calling convention, for Visual Basic [Vollant, Truta] -- Update msdos and win32 scripts and makefiles [Truta] -- Export symbols by name, not by ordinal, in win32/zlib.def [Truta] -- Add contrib/ada [Anisimkov] -- Move asm files from contrib/vstudio/vc70_32 to contrib/asm386 [Truta] -- Rename contrib/asm386 to contrib/masmx86 [Truta, Vollant] -- Add contrib/masm686 [Truta] -- Fix offsets in contrib/inflate86 and contrib/masmx86/inffas32.asm - [Truta, Vollant] -- Update contrib/delphi; rename to contrib/pascal; add example [Truta] -- Remove contrib/delphi2; add a new contrib/delphi [Truta] -- Avoid inclusion of the nonstandard in contrib/iostream, - and fix some method prototypes [Truta] -- Fix the ZCR_SEED2 constant to avoid warnings in contrib/minizip - [Truta] -- Avoid the use of backslash (\) in contrib/minizip [Vollant] -- Fix file time handling in contrib/untgz; update makefiles [Truta] -- Update contrib/vstudio/vc70_32 to comply with the new DLL guidelines - [Vollant] -- Remove contrib/vstudio/vc15_16 [Vollant] -- Rename contrib/vstudio/vc70_32 to contrib/vstudio/vc7 [Truta] -- Update README.contrib [Truta] -- Invert the assignment order of match_head and s->prev[...] in - INSERT_STRING [Truta] -- Compare TOO_FAR with 32767 instead of 32768, to avoid 16-bit warnings - [Truta] -- Compare function pointers with 0, not with NULL or Z_NULL [Truta] -- Fix prototype of syncsearch in inflate.c [Truta] -- Introduce ASMINF macro to be enabled when using an ASM implementation - of inflate_fast [Truta] -- Change NO_DEFLATE to NO_GZCOMPRESS [Truta] -- Modify test_gzio in example.c to take a single file name as a - parameter [Truta] -- Exit the example.c program if gzopen fails [Truta] -- Add type casts around strlen in example.c [Truta] -- Remove casting to sizeof in minigzip.c; give a proper type - to the variable compared with SUFFIX_LEN [Truta] -- Update definitions of STDC and STDC99 in zconf.h [Truta] -- Synchronize zconf.h with the new Windows DLL interface [Truta] -- Use SYS16BIT instead of __32BIT__ to distinguish between - 16- and 32-bit platforms [Truta] -- Use far memory allocators in small 16-bit memory models for - Turbo C [Truta] -- Add info about the use of ASMV, ASMINF and ZLIB_WINAPI in - zlibCompileFlags [Truta] -- Cygwin has vsnprintf [Wilson] -- In Windows16, OS_CODE is 0, as in MSDOS [Truta] -- In Cygwin, OS_CODE is 3 (Unix), not 11 (Windows32) [Wilson] - -Changes in 1.2.0.4 (10 August 2003) -- Minor FAQ updates -- Be more strict when checking inflateInit2's windowBits parameter -- Change NO_GUNZIP compile option to NO_GZIP to cover deflate as well -- Add gzip wrapper option to deflateInit2 using windowBits -- Add updated QNX rule in configure and qnx directory [Bonnefoy] -- Make inflate distance-too-far checks more rigorous -- Clean up FAR usage in inflate -- Add casting to sizeof() in gzio.c and minigzip.c - -Changes in 1.2.0.3 (19 July 2003) -- Fix silly error in gzungetc() implementation [Vollant] -- Update contrib/minizip and contrib/vstudio [Vollant] -- Fix printf format in example.c -- Correct cdecl support in zconf.in.h [Anisimkov] -- Minor FAQ updates - -Changes in 1.2.0.2 (13 July 2003) -- Add ZLIB_VERNUM in zlib.h for numerical preprocessor comparisons -- Attempt to avoid warnings in crc32.c for pointer-int conversion -- Add AIX to configure, remove aix directory [Bakker] -- Add some casts to minigzip.c -- Improve checking after insecure sprintf() or vsprintf() calls -- Remove #elif's from crc32.c -- Change leave label to inf_leave in inflate.c and infback.c to avoid - library conflicts -- Remove inflate gzip decoding by default--only enable gzip decoding by - special request for stricter backward compatibility -- Add zlibCompileFlags() function to return compilation information -- More typecasting in deflate.c to avoid warnings -- Remove leading underscore from _Capital #defines [Truta] -- Fix configure to link shared library when testing -- Add some Windows CE target adjustments [Mai] -- Remove #define ZLIB_DLL in zconf.h [Vollant] -- Add zlib.3 [Rodgers] -- Update RFC URL in deflate.c and algorithm.txt [Mai] -- Add zlib_dll_FAQ.txt to contrib [Truta] -- Add UL to some constants [Truta] -- Update minizip and vstudio [Vollant] -- Remove vestigial NEED_DUMMY_RETURN from zconf.in.h -- Expand use of NO_DUMMY_DECL to avoid all dummy structures -- Added iostream3 to contrib [Schwardt] -- Replace rewind() with fseek() for WinCE [Truta] -- Improve setting of zlib format compression level flags - - Report 0 for huffman and rle strategies and for level == 0 or 1 - - Report 2 only for level == 6 -- Only deal with 64K limit when necessary at compile time [Truta] -- Allow TOO_FAR check to be turned off at compile time [Truta] -- Add gzclearerr() function [Souza] -- Add gzungetc() function - -Changes in 1.2.0.1 (17 March 2003) -- Add Z_RLE strategy for run-length encoding [Truta] - - When Z_RLE requested, restrict matches to distance one - - Update zlib.h, minigzip.c, gzopen(), gzdopen() for Z_RLE -- Correct FASTEST compilation to allow level == 0 -- Clean up what gets compiled for FASTEST -- Incorporate changes to zconf.in.h [Vollant] - - Refine detection of Turbo C need for dummy returns - - Refine ZLIB_DLL compilation - - Include additional header file on VMS for off_t typedef -- Try to use _vsnprintf where it supplants vsprintf [Vollant] -- Add some casts in inffast.c -- Enchance comments in zlib.h on what happens if gzprintf() tries to - write more than 4095 bytes before compression -- Remove unused state from inflateBackEnd() -- Remove exit(0) from minigzip.c, example.c -- Get rid of all those darn tabs -- Add "check" target to Makefile.in that does the same thing as "test" -- Add "mostlyclean" and "maintainer-clean" targets to Makefile.in -- Update contrib/inflate86 [Anderson] -- Update contrib/testzlib, contrib/vstudio, contrib/minizip [Vollant] -- Add msdos and win32 directories with makefiles [Truta] -- More additions and improvements to the FAQ - -Changes in 1.2.0 (9 March 2003) -- New and improved inflate code - - About 20% faster - - Does not allocate 32K window unless and until needed - - Automatically detects and decompresses gzip streams - - Raw inflate no longer needs an extra dummy byte at end - - Added inflateBack functions using a callback interface--even faster - than inflate, useful for file utilities (gzip, zip) - - Added inflateCopy() function to record state for random access on - externally generated deflate streams (e.g. in gzip files) - - More readable code (I hope) -- New and improved crc32() - - About 50% faster, thanks to suggestions from Rodney Brown -- Add deflateBound() and compressBound() functions -- Fix memory leak in deflateInit2() -- Permit setting dictionary for raw deflate (for parallel deflate) -- Fix const declaration for gzwrite() -- Check for some malloc() failures in gzio.c -- Fix bug in gzopen() on single-byte file 0x1f -- Fix bug in gzread() on concatenated file with 0x1f at end of buffer - and next buffer doesn't start with 0x8b -- Fix uncompress() to return Z_DATA_ERROR on truncated input -- Free memory at end of example.c -- Remove MAX #define in trees.c (conflicted with some libraries) -- Fix static const's in deflate.c, gzio.c, and zutil.[ch] -- Declare malloc() and free() in gzio.c if STDC not defined -- Use malloc() instead of calloc() in zutil.c if int big enough -- Define STDC for AIX -- Add aix/ with approach for compiling shared library on AIX -- Add HP-UX support for shared libraries in configure -- Add OpenUNIX support for shared libraries in configure -- Use $cc instead of gcc to build shared library -- Make prefix directory if needed when installing -- Correct Macintosh avoidance of typedef Byte in zconf.h -- Correct Turbo C memory allocation when under Linux -- Use libz.a instead of -lz in Makefile (assure use of compiled library) -- Update configure to check for snprintf or vsnprintf functions and their - return value, warn during make if using an insecure function -- Fix configure problem with compile-time knowledge of HAVE_UNISTD_H that - is lost when library is used--resolution is to build new zconf.h -- Documentation improvements (in zlib.h): - - Document raw deflate and inflate - - Update RFCs URL - - Point out that zlib and gzip formats are different - - Note that Z_BUF_ERROR is not fatal - - Document string limit for gzprintf() and possible buffer overflow - - Note requirement on avail_out when flushing - - Note permitted values of flush parameter of inflate() -- Add some FAQs (and even answers) to the FAQ -- Add contrib/inflate86/ for x86 faster inflate -- Add contrib/blast/ for PKWare Data Compression Library decompression -- Add contrib/puff/ simple inflate for deflate format description - -Changes in 1.1.4 (11 March 2002) -- ZFREE was repeated on same allocation on some error conditions. - This creates a security problem described in - http://www.zlib.org/advisory-2002-03-11.txt -- Returned incorrect error (Z_MEM_ERROR) on some invalid data -- Avoid accesses before window for invalid distances with inflate window - less than 32K. -- force windowBits > 8 to avoid a bug in the encoder for a window size - of 256 bytes. (A complete fix will be available in 1.1.5). - -Changes in 1.1.3 (9 July 1998) -- fix "an inflate input buffer bug that shows up on rare but persistent - occasions" (Mark) -- fix gzread and gztell for concatenated .gz files (Didier Le Botlan) -- fix gzseek(..., SEEK_SET) in write mode -- fix crc check after a gzeek (Frank Faubert) -- fix miniunzip when the last entry in a zip file is itself a zip file - (J Lillge) -- add contrib/asm586 and contrib/asm686 (Brian Raiter) - See http://www.muppetlabs.com/~breadbox/software/assembly.html -- add support for Delphi 3 in contrib/delphi (Bob Dellaca) -- add support for C++Builder 3 and Delphi 3 in contrib/delphi2 (Davide Moretti) -- do not exit prematurely in untgz if 0 at start of block (Magnus Holmgren) -- use macro EXTERN instead of extern to support DLL for BeOS (Sander Stoks) -- added a FAQ file - -- Support gzdopen on Mac with Metrowerks (Jason Linhart) -- Do not redefine Byte on Mac (Brad Pettit & Jason Linhart) -- define SEEK_END too if SEEK_SET is not defined (Albert Chin-A-Young) -- avoid some warnings with Borland C (Tom Tanner) -- fix a problem in contrib/minizip/zip.c for 16-bit MSDOS (Gilles Vollant) -- emulate utime() for WIN32 in contrib/untgz (Gilles Vollant) -- allow several arguments to configure (Tim Mooney, Frodo Looijaard) -- use libdir and includedir in Makefile.in (Tim Mooney) -- support shared libraries on OSF1 V4 (Tim Mooney) -- remove so_locations in "make clean" (Tim Mooney) -- fix maketree.c compilation error (Glenn, Mark) -- Python interface to zlib now in Python 1.5 (Jeremy Hylton) -- new Makefile.riscos (Rich Walker) -- initialize static descriptors in trees.c for embedded targets (Nick Smith) -- use "foo-gz" in example.c for RISCOS and VMS (Nick Smith) -- add the OS/2 files in Makefile.in too (Andrew Zabolotny) -- fix fdopen and halloc macros for Microsoft C 6.0 (Tom Lane) -- fix maketree.c to allow clean compilation of inffixed.h (Mark) -- fix parameter check in deflateCopy (Gunther Nikl) -- cleanup trees.c, use compressed_len only in debug mode (Christian Spieler) -- Many portability patches by Christian Spieler: - . zutil.c, zutil.h: added "const" for zmem* - . Make_vms.com: fixed some typos - . Make_vms.com: msdos/Makefile.*: removed zutil.h from some dependency lists - . msdos/Makefile.msc: remove "default rtl link library" info from obj files - . msdos/Makefile.*: use model-dependent name for the built zlib library - . msdos/Makefile.emx, nt/Makefile.emx, nt/Makefile.gcc: - new makefiles, for emx (DOS/OS2), emx&rsxnt and mingw32 (Windows 9x / NT) -- use define instead of typedef for Bytef also for MSC small/medium (Tom Lane) -- replace __far with _far for better portability (Christian Spieler, Tom Lane) -- fix test for errno.h in configure (Tim Newsham) - -Changes in 1.1.2 (19 March 98) -- added contrib/minzip, mini zip and unzip based on zlib (Gilles Vollant) - See http://www.winimage.com/zLibDll/unzip.html -- preinitialize the inflate tables for fixed codes, to make the code - completely thread safe (Mark) -- some simplifications and slight speed-up to the inflate code (Mark) -- fix gzeof on non-compressed files (Allan Schrum) -- add -std1 option in configure for OSF1 to fix gzprintf (Martin Mokrejs) -- use default value of 4K for Z_BUFSIZE for 16-bit MSDOS (Tim Wegner + Glenn) -- added os2/Makefile.def and os2/zlib.def (Andrew Zabolotny) -- add shared lib support for UNIX_SV4.2MP (MATSUURA Takanori) -- do not wrap extern "C" around system includes (Tom Lane) -- mention zlib binding for TCL in README (Andreas Kupries) -- added amiga/Makefile.pup for Amiga powerUP SAS/C PPC (Andreas Kleinert) -- allow "make install prefix=..." even after configure (Glenn Randers-Pehrson) -- allow "configure --prefix $HOME" (Tim Mooney) -- remove warnings in example.c and gzio.c (Glenn Randers-Pehrson) -- move Makefile.sas to amiga/Makefile.sas - -Changes in 1.1.1 (27 Feb 98) -- fix macros _tr_tally_* in deflate.h for debug mode (Glenn Randers-Pehrson) -- remove block truncation heuristic which had very marginal effect for zlib - (smaller lit_bufsize than in gzip 1.2.4) and degraded a little the - compression ratio on some files. This also allows inlining _tr_tally for - matches in deflate_slow. -- added msdos/Makefile.w32 for WIN32 Microsoft Visual C++ (Bob Frazier) - -Changes in 1.1.0 (24 Feb 98) -- do not return STREAM_END prematurely in inflate (John Bowler) -- revert to the zlib 1.0.8 inflate to avoid the gcc 2.8.0 bug (Jeremy Buhler) -- compile with -DFASTEST to get compression code optimized for speed only -- in minigzip, try mmap'ing the input file first (Miguel Albrecht) -- increase size of I/O buffers in minigzip.c and gzio.c (not a big gain - on Sun but significant on HP) - -- add a pointer to experimental unzip library in README (Gilles Vollant) -- initialize variable gcc in configure (Chris Herborth) - -Changes in 1.0.9 (17 Feb 1998) -- added gzputs and gzgets functions -- do not clear eof flag in gzseek (Mark Diekhans) -- fix gzseek for files in transparent mode (Mark Diekhans) -- do not assume that vsprintf returns the number of bytes written (Jens Krinke) -- replace EXPORT with ZEXPORT to avoid conflict with other programs -- added compress2 in zconf.h, zlib.def, zlib.dnt -- new asm code from Gilles Vollant in contrib/asm386 -- simplify the inflate code (Mark): - . Replace ZALLOC's in huft_build() with single ZALLOC in inflate_blocks_new() - . ZALLOC the length list in inflate_trees_fixed() instead of using stack - . ZALLOC the value area for huft_build() instead of using stack - . Simplify Z_FINISH check in inflate() - -- Avoid gcc 2.8.0 comparison bug a little differently than zlib 1.0.8 -- in inftrees.c, avoid cc -O bug on HP (Farshid Elahi) -- in zconf.h move the ZLIB_DLL stuff earlier to avoid problems with - the declaration of FAR (Gilles VOllant) -- install libz.so* with mode 755 (executable) instead of 644 (Marc Lehmann) -- read_buf buf parameter of type Bytef* instead of charf* -- zmemcpy parameters are of type Bytef*, not charf* (Joseph Strout) -- do not redeclare unlink in minigzip.c for WIN32 (John Bowler) -- fix check for presence of directories in "make install" (Ian Willis) - -Changes in 1.0.8 (27 Jan 1998) -- fixed offsets in contrib/asm386/gvmat32.asm (Gilles Vollant) -- fix gzgetc and gzputc for big endian systems (Markus Oberhumer) -- added compress2() to allow setting the compression level -- include sys/types.h to get off_t on some systems (Marc Lehmann & QingLong) -- use constant arrays for the static trees in trees.c instead of computing - them at run time (thanks to Ken Raeburn for this suggestion). To create - trees.h, compile with GEN_TREES_H and run "make test". -- check return code of example in "make test" and display result -- pass minigzip command line options to file_compress -- simplifying code of inflateSync to avoid gcc 2.8 bug - -- support CC="gcc -Wall" in configure -s (QingLong) -- avoid a flush caused by ftell in gzopen for write mode (Ken Raeburn) -- fix test for shared library support to avoid compiler warnings -- zlib.lib -> zlib.dll in msdos/zlib.rc (Gilles Vollant) -- check for TARGET_OS_MAC in addition to MACOS (Brad Pettit) -- do not use fdopen for Metrowerks on Mac (Brad Pettit)) -- add checks for gzputc and gzputc in example.c -- avoid warnings in gzio.c and deflate.c (Andreas Kleinert) -- use const for the CRC table (Ken Raeburn) -- fixed "make uninstall" for shared libraries -- use Tracev instead of Trace in infblock.c -- in example.c use correct compressed length for test_sync -- suppress +vnocompatwarnings in configure for HPUX (not always supported) - -Changes in 1.0.7 (20 Jan 1998) -- fix gzseek which was broken in write mode -- return error for gzseek to negative absolute position -- fix configure for Linux (Chun-Chung Chen) -- increase stack space for MSC (Tim Wegner) -- get_crc_table and inflateSyncPoint are EXPORTed (Gilles Vollant) -- define EXPORTVA for gzprintf (Gilles Vollant) -- added man page zlib.3 (Rick Rodgers) -- for contrib/untgz, fix makedir() and improve Makefile - -- check gzseek in write mode in example.c -- allocate extra buffer for seeks only if gzseek is actually called -- avoid signed/unsigned comparisons (Tim Wegner, Gilles Vollant) -- add inflateSyncPoint in zconf.h -- fix list of exported functions in nt/zlib.dnt and mdsos/zlib.def - -Changes in 1.0.6 (19 Jan 1998) -- add functions gzprintf, gzputc, gzgetc, gztell, gzeof, gzseek, gzrewind and - gzsetparams (thanks to Roland Giersig and Kevin Ruland for some of this code) -- Fix a deflate bug occurring only with compression level 0 (thanks to - Andy Buckler for finding this one). -- In minigzip, pass transparently also the first byte for .Z files. -- return Z_BUF_ERROR instead of Z_OK if output buffer full in uncompress() -- check Z_FINISH in inflate (thanks to Marc Schluper) -- Implement deflateCopy (thanks to Adam Costello) -- make static libraries by default in configure, add --shared option. -- move MSDOS or Windows specific files to directory msdos -- suppress the notion of partial flush to simplify the interface - (but the symbol Z_PARTIAL_FLUSH is kept for compatibility with 1.0.4) -- suppress history buffer provided by application to simplify the interface - (this feature was not implemented anyway in 1.0.4) -- next_in and avail_in must be initialized before calling inflateInit or - inflateInit2 -- add EXPORT in all exported functions (for Windows DLL) -- added Makefile.nt (thanks to Stephen Williams) -- added the unsupported "contrib" directory: - contrib/asm386/ by Gilles Vollant - 386 asm code replacing longest_match(). - contrib/iostream/ by Kevin Ruland - A C++ I/O streams interface to the zlib gz* functions - contrib/iostream2/ by Tyge Løvset - Another C++ I/O streams interface - contrib/untgz/ by "Pedro A. Aranda Guti\irrez" - A very simple tar.gz file extractor using zlib - contrib/visual-basic.txt by Carlos Rios - How to use compress(), uncompress() and the gz* functions from VB. -- pass params -f (filtered data), -h (huffman only), -1 to -9 (compression - level) in minigzip (thanks to Tom Lane) - -- use const for rommable constants in deflate -- added test for gzseek and gztell in example.c -- add undocumented function inflateSyncPoint() (hack for Paul Mackerras) -- add undocumented function zError to convert error code to string - (for Tim Smithers) -- Allow compilation of gzio with -DNO_DEFLATE to avoid the compression code. -- Use default memcpy for Symantec MSDOS compiler. -- Add EXPORT keyword for check_func (needed for Windows DLL) -- add current directory to LD_LIBRARY_PATH for "make test" -- create also a link for libz.so.1 -- added support for FUJITSU UXP/DS (thanks to Toshiaki Nomura) -- use $(SHAREDLIB) instead of libz.so in Makefile.in (for HPUX) -- added -soname for Linux in configure (Chun-Chung Chen, -- assign numbers to the exported functions in zlib.def (for Windows DLL) -- add advice in zlib.h for best usage of deflateSetDictionary -- work around compiler bug on Atari (cast Z_NULL in call of s->checkfn) -- allow compilation with ANSI keywords only enabled for TurboC in large model -- avoid "versionString"[0] (Borland bug) -- add NEED_DUMMY_RETURN for Borland -- use variable z_verbose for tracing in debug mode (L. Peter Deutsch). -- allow compilation with CC -- defined STDC for OS/2 (David Charlap) -- limit external names to 8 chars for MVS (Thomas Lund) -- in minigzip.c, use static buffers only for 16-bit systems -- fix suffix check for "minigzip -d foo.gz" -- do not return an error for the 2nd of two consecutive gzflush() (Felix Lee) -- use _fdopen instead of fdopen for MSC >= 6.0 (Thomas Fanslau) -- added makelcc.bat for lcc-win32 (Tom St Denis) -- in Makefile.dj2, use copy and del instead of install and rm (Frank Donahoe) -- Avoid expanded $Id$. Use "rcs -kb" or "cvs admin -kb" to avoid Id expansion. -- check for unistd.h in configure (for off_t) -- remove useless check parameter in inflate_blocks_free -- avoid useless assignment of s->check to itself in inflate_blocks_new -- do not flush twice in gzclose (thanks to Ken Raeburn) -- rename FOPEN as F_OPEN to avoid clash with /usr/include/sys/file.h -- use NO_ERRNO_H instead of enumeration of operating systems with errno.h -- work around buggy fclose on pipes for HP/UX -- support zlib DLL with BORLAND C++ 5.0 (thanks to Glenn Randers-Pehrson) -- fix configure if CC is already equal to gcc - -Changes in 1.0.5 (3 Jan 98) -- Fix inflate to terminate gracefully when fed corrupted or invalid data -- Use const for rommable constants in inflate -- Eliminate memory leaks on error conditions in inflate -- Removed some vestigial code in inflate -- Update web address in README - -Changes in 1.0.4 (24 Jul 96) -- In very rare conditions, deflate(s, Z_FINISH) could fail to produce an EOF - bit, so the decompressor could decompress all the correct data but went - on to attempt decompressing extra garbage data. This affected minigzip too. -- zlibVersion and gzerror return const char* (needed for DLL) -- port to RISCOS (no fdopen, no multiple dots, no unlink, no fileno) -- use z_error only for DEBUG (avoid problem with DLLs) - -Changes in 1.0.3 (2 Jul 96) -- use z_streamp instead of z_stream *, which is now a far pointer in MSDOS - small and medium models; this makes the library incompatible with previous - versions for these models. (No effect in large model or on other systems.) -- return OK instead of BUF_ERROR if previous deflate call returned with - avail_out as zero but there is nothing to do -- added memcmp for non STDC compilers -- define NO_DUMMY_DECL for more Mac compilers (.h files merged incorrectly) -- define __32BIT__ if __386__ or i386 is defined (pb. with Watcom and SCO) -- better check for 16-bit mode MSC (avoids problem with Symantec) - -Changes in 1.0.2 (23 May 96) -- added Windows DLL support -- added a function zlibVersion (for the DLL support) -- fixed declarations using Bytef in infutil.c (pb with MSDOS medium model) -- Bytef is define's instead of typedef'd only for Borland C -- avoid reading uninitialized memory in example.c -- mention in README that the zlib format is now RFC1950 -- updated Makefile.dj2 -- added algorithm.doc - -Changes in 1.0.1 (20 May 96) [1.0 skipped to avoid confusion] -- fix array overlay in deflate.c which sometimes caused bad compressed data -- fix inflate bug with empty stored block -- fix MSDOS medium model which was broken in 0.99 -- fix deflateParams() which could generate bad compressed data. -- Bytef is define'd instead of typedef'ed (work around Borland bug) -- added an INDEX file -- new makefiles for DJGPP (Makefile.dj2), 32-bit Borland (Makefile.b32), - Watcom (Makefile.wat), Amiga SAS/C (Makefile.sas) -- speed up adler32 for modern machines without auto-increment -- added -ansi for IRIX in configure -- static_init_done in trees.c is an int -- define unlink as delete for VMS -- fix configure for QNX -- add configure branch for SCO and HPUX -- avoid many warnings (unused variables, dead assignments, etc...) -- no fdopen for BeOS -- fix the Watcom fix for 32 bit mode (define FAR as empty) -- removed redefinition of Byte for MKWERKS -- work around an MWKERKS bug (incorrect merge of all .h files) - -Changes in 0.99 (27 Jan 96) -- allow preset dictionary shared between compressor and decompressor -- allow compression level 0 (no compression) -- add deflateParams in zlib.h: allow dynamic change of compression level - and compression strategy. -- test large buffers and deflateParams in example.c -- add optional "configure" to build zlib as a shared library -- suppress Makefile.qnx, use configure instead -- fixed deflate for 64-bit systems (detected on Cray) -- fixed inflate_blocks for 64-bit systems (detected on Alpha) -- declare Z_DEFLATED in zlib.h (possible parameter for deflateInit2) -- always return Z_BUF_ERROR when deflate() has nothing to do -- deflateInit and inflateInit are now macros to allow version checking -- prefix all global functions and types with z_ with -DZ_PREFIX -- make falloc completely reentrant (inftrees.c) -- fixed very unlikely race condition in ct_static_init -- free in reverse order of allocation to help memory manager -- use zlib-1.0/* instead of zlib/* inside the tar.gz -- make zlib warning-free with "gcc -O3 -Wall -Wwrite-strings -Wpointer-arith - -Wconversion -Wstrict-prototypes -Wmissing-prototypes" -- allow gzread on concatenated .gz files -- deflateEnd now returns Z_DATA_ERROR if it was premature -- deflate is finally (?) fully deterministic (no matches beyond end of input) -- Document Z_SYNC_FLUSH -- add uninstall in Makefile -- Check for __cpluplus in zlib.h -- Better test in ct_align for partial flush -- avoid harmless warnings for Borland C++ -- initialize hash_head in deflate.c -- avoid warning on fdopen (gzio.c) for HP cc -Aa -- include stdlib.h for STDC compilers -- include errno.h for Cray -- ignore error if ranlib doesn't exist -- call ranlib twice for NeXTSTEP -- use exec_prefix instead of prefix for libz.a -- renamed ct_* as _tr_* to avoid conflict with applications -- clear z->msg in inflateInit2 before any error return -- initialize opaque in example.c, gzio.c, deflate.c and inflate.c -- fixed typo in zconf.h (_GNUC__ => __GNUC__) -- check for WIN32 in zconf.h and zutil.c (avoid farmalloc in 32-bit mode) -- fix typo in Make_vms.com (f$trnlnm -> f$getsyi) -- in fcalloc, normalize pointer if size > 65520 bytes -- don't use special fcalloc for 32 bit Borland C++ -- use STDC instead of __GO32__ to avoid redeclaring exit, calloc, etc... -- use Z_BINARY instead of BINARY -- document that gzclose after gzdopen will close the file -- allow "a" as mode in gzopen. -- fix error checking in gzread -- allow skipping .gz extra-field on pipes -- added reference to Perl interface in README -- put the crc table in FAR data (I dislike more and more the medium model :) -- added get_crc_table -- added a dimension to all arrays (Borland C can't count). -- workaround Borland C bug in declaration of inflate_codes_new & inflate_fast -- guard against multiple inclusion of *.h (for precompiled header on Mac) -- Watcom C pretends to be Microsoft C small model even in 32 bit mode. -- don't use unsized arrays to avoid silly warnings by Visual C++: - warning C4746: 'inflate_mask' : unsized array treated as '__far' - (what's wrong with far data in far model?). -- define enum out of inflate_blocks_state to allow compilation with C++ - -Changes in 0.95 (16 Aug 95) -- fix MSDOS small and medium model (now easier to adapt to any compiler) -- inlined send_bits -- fix the final (:-) bug for deflate with flush (output was correct but - not completely flushed in rare occasions). -- default window size is same for compression and decompression - (it's now sufficient to set MAX_WBITS in zconf.h). -- voidp -> voidpf and voidnp -> voidp (for consistency with other - typedefs and because voidnp was not near in large model). - -Changes in 0.94 (13 Aug 95) -- support MSDOS medium model -- fix deflate with flush (could sometimes generate bad output) -- fix deflateReset (zlib header was incorrectly suppressed) -- added support for VMS -- allow a compression level in gzopen() -- gzflush now calls fflush -- For deflate with flush, flush even if no more input is provided. -- rename libgz.a as libz.a -- avoid complex expression in infcodes.c triggering Turbo C bug -- work around a problem with gcc on Alpha (in INSERT_STRING) -- don't use inline functions (problem with some gcc versions) -- allow renaming of Byte, uInt, etc... with #define. -- avoid warning about (unused) pointer before start of array in deflate.c -- avoid various warnings in gzio.c, example.c, infblock.c, adler32.c, zutil.c -- avoid reserved word 'new' in trees.c - -Changes in 0.93 (25 June 95) -- temporarily disable inline functions -- make deflate deterministic -- give enough lookahead for PARTIAL_FLUSH -- Set binary mode for stdin/stdout in minigzip.c for OS/2 -- don't even use signed char in inflate (not portable enough) -- fix inflate memory leak for segmented architectures - -Changes in 0.92 (3 May 95) -- don't assume that char is signed (problem on SGI) -- Clear bit buffer when starting a stored block -- no memcpy on Pyramid -- suppressed inftest.c -- optimized fill_window, put longest_match inline for gcc -- optimized inflate on stored blocks. -- untabify all sources to simplify patches - -Changes in 0.91 (2 May 95) -- Default MEM_LEVEL is 8 (not 9 for Unix) as documented in zlib.h -- Document the memory requirements in zconf.h -- added "make install" -- fix sync search logic in inflateSync -- deflate(Z_FULL_FLUSH) now works even if output buffer too short -- after inflateSync, don't scare people with just "lo world" -- added support for DJGPP - -Changes in 0.9 (1 May 95) -- don't assume that zalloc clears the allocated memory (the TurboC bug - was Mark's bug after all :) -- let again gzread copy uncompressed data unchanged (was working in 0.71) -- deflate(Z_FULL_FLUSH), inflateReset and inflateSync are now fully implemented -- added a test of inflateSync in example.c -- moved MAX_WBITS to zconf.h because users might want to change that. -- document explicitly that zalloc(64K) on MSDOS must return a normalized - pointer (zero offset) -- added Makefiles for Microsoft C, Turbo C, Borland C++ -- faster crc32() - -Changes in 0.8 (29 April 95) -- added fast inflate (inffast.c) -- deflate(Z_FINISH) now returns Z_STREAM_END when done. Warning: this - is incompatible with previous versions of zlib which returned Z_OK. -- work around a TurboC compiler bug (bad code for b << 0, see infutil.h) - (actually that was not a compiler bug, see 0.81 above) -- gzread no longer reads one extra byte in certain cases -- In gzio destroy(), don't reference a freed structure -- avoid many warnings for MSDOS -- avoid the ERROR symbol which is used by MS Windows - -Changes in 0.71 (14 April 95) -- Fixed more MSDOS compilation problems :( There is still a bug with - TurboC large model. - -Changes in 0.7 (14 April 95) -- Added full inflate support. -- Simplified the crc32() interface. The pre- and post-conditioning - (one's complement) is now done inside crc32(). WARNING: this is - incompatible with previous versions; see zlib.h for the new usage. - -Changes in 0.61 (12 April 95) -- workaround for a bug in TurboC. example and minigzip now work on MSDOS. - -Changes in 0.6 (11 April 95) -- added minigzip.c -- added gzdopen to reopen a file descriptor as gzFile -- added transparent reading of non-gziped files in gzread. -- fixed bug in gzread (don't read crc as data) -- fixed bug in destroy (gzio.c) (don't return Z_STREAM_END for gzclose). -- don't allocate big arrays in the stack (for MSDOS) -- fix some MSDOS compilation problems - -Changes in 0.5: -- do real compression in deflate.c. Z_PARTIAL_FLUSH is supported but - not yet Z_FULL_FLUSH. -- support decompression but only in a single step (forced Z_FINISH) -- added opaque object for zalloc and zfree. -- added deflateReset and inflateReset -- added a variable zlib_version for consistency checking. -- renamed the 'filter' parameter of deflateInit2 as 'strategy'. - Added Z_FILTERED and Z_HUFFMAN_ONLY constants. - -Changes in 0.4: -- avoid "zip" everywhere, use zlib instead of ziplib. -- suppress Z_BLOCK_FLUSH, interpret Z_PARTIAL_FLUSH as block flush - if compression method == 8. -- added adler32 and crc32 -- renamed deflateOptions as deflateInit2, call one or the other but not both -- added the method parameter for deflateInit2. -- added inflateInit2 -- simplied considerably deflateInit and inflateInit by not supporting - user-provided history buffer. This is supported only in deflateInit2 - and inflateInit2. - -Changes in 0.3: -- prefix all macro names with Z_ -- use Z_FINISH instead of deflateEnd to finish compression. -- added Z_HUFFMAN_ONLY -- added gzerror() diff --git a/libs/zlibng/FAQ.zlib b/libs/zlibng/FAQ.zlib deleted file mode 100644 index f234f3e59..000000000 --- a/libs/zlibng/FAQ.zlib +++ /dev/null @@ -1,374 +0,0 @@ -## -# THIS IS AN UNMAINTAINED COPY OF THE ORIGINAL FILE DISTRIBUTED WITH ZLIB 1.2.11 -## - - - - - Frequently Asked Questions about zlib - - -If your question is not there, please check the zlib home page -http://zlib.net/ which may have more recent information. -The lastest zlib FAQ is at http://zlib.net/zlib_faq.html - - - 1. Is zlib Y2K-compliant? - - Yes. zlib doesn't handle dates. - - 2. Where can I get a Windows DLL version? - - The zlib sources can be compiled without change to produce a DLL. See the - file win32/DLL_FAQ.txt in the zlib distribution. Pointers to the - precompiled DLL are found in the zlib web site at http://zlib.net/ . - - 3. Where can I get a Visual Basic interface to zlib? - - See - * http://marknelson.us/1997/01/01/zlib-engine/ - * win32/DLL_FAQ.txt in the zlib distribution - - 4. compress() returns Z_BUF_ERROR. - - Make sure that before the call of compress(), the length of the compressed - buffer is equal to the available size of the compressed buffer and not - zero. For Visual Basic, check that this parameter is passed by reference - ("as any"), not by value ("as long"). - - 5. deflate() or inflate() returns Z_BUF_ERROR. - - Before making the call, make sure that avail_in and avail_out are not zero. - When setting the parameter flush equal to Z_FINISH, also make sure that - avail_out is big enough to allow processing all pending input. Note that a - Z_BUF_ERROR is not fatal--another call to deflate() or inflate() can be - made with more input or output space. A Z_BUF_ERROR may in fact be - unavoidable depending on how the functions are used, since it is not - possible to tell whether or not there is more output pending when - strm.avail_out returns with zero. See http://zlib.net/zlib_how.html for a - heavily annotated example. - - 6. Where's the zlib documentation (man pages, etc.)? - - It's in zlib.h . Examples of zlib usage are in the files test/example.c - and test/minigzip.c, with more in examples/ . - - 7. Why don't you use GNU autoconf or libtool or ...? - - Because we would like to keep zlib as a very small and simple package. - zlib is rather portable and doesn't need much configuration. - - 8. I found a bug in zlib. - - Most of the time, such problems are due to an incorrect usage of zlib. - Please try to reproduce the problem with a small program and send the - corresponding source to us at zlib@gzip.org . Do not send multi-megabyte - data files without prior agreement. - - 9. Why do I get "undefined reference to gzputc"? - - If "make test" produces something like - - example.o(.text+0x154): undefined reference to `gzputc' - - check that you don't have old files libz.* in /usr/lib, /usr/local/lib or - /usr/X11R6/lib. Remove any old versions, then do "make install". - -10. I need a Delphi interface to zlib. - - See the contrib/delphi directory in the zlib distribution. - -11. Can zlib handle .zip archives? - - Not by itself, no. See the directory contrib/minizip in the zlib - distribution. - -12. Can zlib handle .Z files? - - No, sorry. You have to spawn an uncompress or gunzip subprocess, or adapt - the code of uncompress on your own. - -13. How can I make a Unix shared library? - - By default a shared (and a static) library is built for Unix. So: - - make distclean - ./configure - make - -14. How do I install a shared zlib library on Unix? - - After the above, then: - - make install - - However, many flavors of Unix come with a shared zlib already installed. - Before going to the trouble of compiling a shared version of zlib and - trying to install it, you may want to check if it's already there! If you - can #include , it's there. The -lz option will probably link to - it. You can check the version at the top of zlib.h or with the - ZLIB_VERSION symbol defined in zlib.h . - -15. I have a question about OttoPDF. - - We are not the authors of OttoPDF. The real author is on the OttoPDF web - site: Joel Hainley, jhainley@myndkryme.com. - -16. Can zlib decode Flate data in an Adobe PDF file? - - Yes. See http://www.pdflib.com/ . To modify PDF forms, see - http://sourceforge.net/projects/acroformtool/ . - -17. Why am I getting this "register_frame_info not found" error on Solaris? - - After installing zlib 1.1.4 on Solaris 2.6, running applications using zlib - generates an error such as: - - ld.so.1: rpm: fatal: relocation error: file /usr/local/lib/libz.so: - symbol __register_frame_info: referenced symbol not found - - The symbol __register_frame_info is not part of zlib, it is generated by - the C compiler (cc or gcc). You must recompile applications using zlib - which have this problem. This problem is specific to Solaris. See - http://www.sunfreeware.com for Solaris versions of zlib and applications - using zlib. - -18. Why does gzip give an error on a file I make with compress/deflate? - - The compress and deflate functions produce data in the zlib format, which - is different and incompatible with the gzip format. The gz* functions in - zlib on the other hand use the gzip format. Both the zlib and gzip formats - use the same compressed data format internally, but have different headers - and trailers around the compressed data. - -19. Ok, so why are there two different formats? - - The gzip format was designed to retain the directory information about a - single file, such as the name and last modification date. The zlib format - on the other hand was designed for in-memory and communication channel - applications, and has a much more compact header and trailer and uses a - faster integrity check than gzip. - -20. Well that's nice, but how do I make a gzip file in memory? - - You can request that deflate write the gzip format instead of the zlib - format using deflateInit2(). You can also request that inflate decode the - gzip format using inflateInit2(). Read zlib.h for more details. - -21. Is zlib thread-safe? - - Yes. However any library routines that zlib uses and any application- - provided memory allocation routines must also be thread-safe. zlib's gz* - functions use stdio library routines, and most of zlib's functions use the - library memory allocation routines by default. zlib's *Init* functions - allow for the application to provide custom memory allocation routines. - - Of course, you should only operate on any given zlib or gzip stream from a - single thread at a time. - -22. Can I use zlib in my commercial application? - - Yes. Please read the license in zlib.h. - -23. Is zlib under the GNU license? - - No. Please read the license in zlib.h. - -24. The license says that altered source versions must be "plainly marked". So - what exactly do I need to do to meet that requirement? - - You need to change the ZLIB_VERSION and ZLIB_VERNUM #defines in zlib.h. In - particular, the final version number needs to be changed to "f", and an - identification string should be appended to ZLIB_VERSION. Version numbers - x.x.x.f are reserved for modifications to zlib by others than the zlib - maintainers. For example, if the version of the base zlib you are altering - is "1.2.3.4", then in zlib.h you should change ZLIB_VERNUM to 0x123f, and - ZLIB_VERSION to something like "1.2.3.f-zachary-mods-v3". You can also - update the version strings in deflate.c and inftrees.c. - - For altered source distributions, you should also note the origin and - nature of the changes in zlib.h, as well as in ChangeLog and README, along - with the dates of the alterations. The origin should include at least your - name (or your company's name), and an email address to contact for help or - issues with the library. - - Note that distributing a compiled zlib library along with zlib.h and - zconf.h is also a source distribution, and so you should change - ZLIB_VERSION and ZLIB_VERNUM and note the origin and nature of the changes - in zlib.h as you would for a full source distribution. - -25. Will zlib work on a big-endian or little-endian architecture, and can I - exchange compressed data between them? - - Yes and yes. - -26. Will zlib work on a 64-bit machine? - - Yes. It has been tested on 64-bit machines, and has no dependence on any - data types being limited to 32-bits in length. If you have any - difficulties, please provide a complete problem report to zlib@gzip.org - -27. Will zlib decompress data from the PKWare Data Compression Library? - - No. The PKWare DCL uses a completely different compressed data format than - does PKZIP and zlib. However, you can look in zlib's contrib/blast - directory for a possible solution to your problem. - -28. Can I access data randomly in a compressed stream? - - No, not without some preparation. If when compressing you periodically use - Z_FULL_FLUSH, carefully write all the pending data at those points, and - keep an index of those locations, then you can start decompression at those - points. You have to be careful to not use Z_FULL_FLUSH too often, since it - can significantly degrade compression. Alternatively, you can scan a - deflate stream once to generate an index, and then use that index for - random access. See examples/zran.c . - -29. Does zlib work on MVS, OS/390, CICS, etc.? - - It has in the past, but we have not heard of any recent evidence. There - were working ports of zlib 1.1.4 to MVS, but those links no longer work. - If you know of recent, successful applications of zlib on these operating - systems, please let us know. Thanks. - -30. Is there some simpler, easier to read version of inflate I can look at to - understand the deflate format? - - First off, you should read RFC 1951. Second, yes. Look in zlib's - contrib/puff directory. - -31. Does zlib infringe on any patents? - - As far as we know, no. In fact, that was originally the whole point behind - zlib. Look here for some more information: - - http://www.gzip.org/#faq11 - -32. Can zlib work with greater than 4 GB of data? - - Yes. inflate() and deflate() will process any amount of data correctly. - Each call of inflate() or deflate() is limited to input and output chunks - of the maximum value that can be stored in the compiler's "unsigned int" - type, but there is no limit to the number of chunks. Note however that the - strm.total_in and strm_total_out counters may be limited to 4 GB. These - counters are provided as a convenience and are not used internally by - inflate() or deflate(). The application can easily set up its own counters - updated after each call of inflate() or deflate() to count beyond 4 GB. - compress() and uncompress() may be limited to 4 GB, since they operate in a - single call. gzseek() and gztell() may be limited to 4 GB depending on how - zlib is compiled. See the zlibCompileFlags() function in zlib.h. - - The word "may" appears several times above since there is a 4 GB limit only - if the compiler's "long" type is 32 bits. If the compiler's "long" type is - 64 bits, then the limit is 16 exabytes. - -33. Does zlib have any security vulnerabilities? - - The only one that we are aware of is potentially in gzprintf(). If zlib is - compiled to use sprintf() or vsprintf(), then there is no protection - against a buffer overflow of an 8K string space (or other value as set by - gzbuffer()), other than the caller of gzprintf() assuring that the output - will not exceed 8K. On the other hand, if zlib is compiled to use - snprintf() or vsnprintf(), which should normally be the case, then there is - no vulnerability. The ./configure script will display warnings if an - insecure variation of sprintf() will be used by gzprintf(). Also the - zlibCompileFlags() function will return information on what variant of - sprintf() is used by gzprintf(). - - If you don't have snprintf() or vsnprintf() and would like one, you can - find a portable implementation here: - - http://www.ijs.si/software/snprintf/ - - Note that you should be using the most recent version of zlib. Versions - 1.1.3 and before were subject to a double-free vulnerability, and versions - 1.2.1 and 1.2.2 were subject to an access exception when decompressing - invalid compressed data. - -34. Is there a Java version of zlib? - - Probably what you want is to use zlib in Java. zlib is already included - as part of the Java SDK in the java.util.zip package. If you really want - a version of zlib written in the Java language, look on the zlib home - page for links: http://zlib.net/ . - -35. I get this or that compiler or source-code scanner warning when I crank it - up to maximally-pedantic. Can't you guys write proper code? - - Many years ago, we gave up attempting to avoid warnings on every compiler - in the universe. It just got to be a waste of time, and some compilers - were downright silly as well as contradicted each other. So now, we simply - make sure that the code always works. - -36. Valgrind (or some similar memory access checker) says that deflate is - performing a conditional jump that depends on an uninitialized value. - Isn't that a bug? - - No. That is intentional for performance reasons, and the output of deflate - is not affected. This only started showing up recently since zlib 1.2.x - uses malloc() by default for allocations, whereas earlier versions used - calloc(), which zeros out the allocated memory. Even though the code was - correct, versions 1.2.4 and later was changed to not stimulate these - checkers. - -37. Will zlib read the (insert any ancient or arcane format here) compressed - data format? - - Probably not. Look in the comp.compression FAQ for pointers to various - formats and associated software. - -38. How can I encrypt/decrypt zip files with zlib? - - zlib doesn't support encryption. The original PKZIP encryption is very - weak and can be broken with freely available programs. To get strong - encryption, use GnuPG, http://www.gnupg.org/ , which already includes zlib - compression. For PKZIP compatible "encryption", look at - http://www.info-zip.org/ - -39. What's the difference between the "gzip" and "deflate" HTTP 1.1 encodings? - - "gzip" is the gzip format, and "deflate" is the zlib format. They should - probably have called the second one "zlib" instead to avoid confusion with - the raw deflate compressed data format. While the HTTP 1.1 RFC 2616 - correctly points to the zlib specification in RFC 1950 for the "deflate" - transfer encoding, there have been reports of servers and browsers that - incorrectly produce or expect raw deflate data per the deflate - specification in RFC 1951, most notably Microsoft. So even though the - "deflate" transfer encoding using the zlib format would be the more - efficient approach (and in fact exactly what the zlib format was designed - for), using the "gzip" transfer encoding is probably more reliable due to - an unfortunate choice of name on the part of the HTTP 1.1 authors. - - Bottom line: use the gzip format for HTTP 1.1 encoding. - -40. Does zlib support the new "Deflate64" format introduced by PKWare? - - No. PKWare has apparently decided to keep that format proprietary, since - they have not documented it as they have previous compression formats. In - any case, the compression improvements are so modest compared to other more - modern approaches, that it's not worth the effort to implement. - -41. I'm having a problem with the zip functions in zlib, can you help? - - There are no zip functions in zlib. You are probably using minizip by - Giles Vollant, which is found in the contrib directory of zlib. It is not - part of zlib. In fact none of the stuff in contrib is part of zlib. The - files in there are not supported by the zlib authors. You need to contact - the authors of the respective contribution for help. - -42. The match.asm code in contrib is under the GNU General Public License. - Since it's part of zlib, doesn't that mean that all of zlib falls under the - GNU GPL? - - No. The files in contrib are not part of zlib. They were contributed by - other authors and are provided as a convenience to the user within the zlib - distribution. Each item in contrib has its own license. - -43. Is zlib subject to export controls? What is its ECCN? - - zlib is not subject to export controls, and so is classified as EAR99. - -44. Can you please sign these lengthy legal documents and fax them back to us - so that we can use your software in our product? - - No. Go away. Shoo. diff --git a/libs/zlibng/INDEX b/libs/zlibng/INDEX deleted file mode 100644 index 34c80ad9e..000000000 --- a/libs/zlibng/INDEX +++ /dev/null @@ -1,55 +0,0 @@ -CMakeLists.txt cmake build file -ChangeLog.zlib history of changes up to the fork from zlib 1.2.11 -FAQ.zlib Frequently Asked Questions about zlib, as distributed in zlib 1.2.11 -INDEX this file -Makefile dummy Makefile that tells you to ./configure -Makefile.in template for Unix Makefile -README guess what -README.zlib Copy of the original README file distributed in zlib 1.2.11 -configure configure script for Unix -test/example.c zlib usages examples for build testing -test/minigzip.c minimal gzip-like functionality for build testing -test/infcover.c inf*.c code coverage for build coverage testing -treebuild.xml XML description of source file dependencies -zconf.h.cmakein zconf.h template for cmake -zconf.h.in zconf.h template for configure -zlib.3 Man page for zlib -zlib.3.pdf Man page in PDF format -zlib.map Linux symbol information -zlib.pc.in Template for pkg-config descriptor -zlib.pc.cmakein zlib.pc template for cmake -zlib2ansi perl script to convert source files for C++ compilation - -arch/ architecture-specific code -doc/ documentation for formats and algorithms -win32/ makefiles for Windows - - zlib public header files (required for library use): -zconf.h -zlib.h - - private source files used to build the zlib library: -adler32.c -compress.c -crc32.c -crc32.h -deflate.c -deflate.h -gzclose.c -gzguts.h -gzlib.c -gzread.c -gzwrite.c -infback.c -inffast.c -inffast.h -inffixed.h -inflate.c -inflate.h -inftrees.c -inftrees.h -trees.c -trees.h -uncompr.c -zutil.c -zutil.h diff --git a/libs/zlibng/INSTALL b/libs/zlibng/INSTALL deleted file mode 100644 index 7aa87a50d..000000000 --- a/libs/zlibng/INSTALL +++ /dev/null @@ -1,64 +0,0 @@ -Overview -======== - -There are several methods for compiling and installing zlib-ng, depending -on your favorite operating system and development toolkits. -This document will attempt to give a general overview of some of them. - -PS: We do not recommend running 'make install' unless you know what you - are doing, as this can override the system default zlib library, and - any wrong configuration or incompatability of zlib-ng can make the - whole system unusable. - -On linux distros, an alternative way to use zlib-ng instead of zlib -for specific programs exist, use LD_PRELOAD. -If the program is dynamically linked with zlib, then zlib-ng can take -its place without risking system-wide instability. Ex: -LD_PRELOAD=/opt/zlib-ng/libz.so.1.2.11.zlib-ng /usr/bin/program - - -Configure -========= - -Using the configure script is currently the main method of setting up the -makefiles and preparing for compilation. Configure will attempt to detect -the specifics of your system, and enable some of the relevant options for you. - -Configure accepts several command-line options, some of the most important -ones are detailed below. - ---zlib-compat - This enables options that will ensure that zlib-ng is compiled with all the - functions that a standard zlib library contains, you will need to use this - if you are going to be using zlib-ng as a drop-in replacement for zlib. - ---without-optimizations - This will disable zlib-ng specific optimizations (does not disable strategies). - ---without-new-strategies - This will disable specially optimized strategies, such as deflate_quick and - deflate_medium. - -Run configure like this: -./configure --zlib-compat - -Then you can compile using make: -make -make test - - -Cmake -===== - -Cmake is an alternative to configure, basically letting you do the same thing, -but with different tools and user interfaces. - -Start by initializing cmake: -cmake . - -Then you can start the configuration tui to set the wanted options -ccmake . - -You can now compile using make: -make -make test diff --git a/libs/zlibng/LICENSE.md b/libs/zlibng/LICENSE.md deleted file mode 100644 index adb48d472..000000000 --- a/libs/zlibng/LICENSE.md +++ /dev/null @@ -1,19 +0,0 @@ -(C) 1995-2013 Jean-loup Gailly and Mark Adler - -This software is provided 'as-is', without any express or implied -warranty. In no event will the authors be held liable for any damages -arising from the use of this software. - -Permission is granted to anyone to use this software for any purpose, -including commercial applications, and to alter it and redistribute it -freely, subject to the following restrictions: - -1. The origin of this software must not be misrepresented; you must not - claim that you wrote the original software. If you use this software - in a product, an acknowledgment in the product documentation would be - appreciated but is not required. - -2. Altered source versions must be plainly marked as such, and must not be - misrepresented as being the original software. - -3. This notice may not be removed or altered from any source distribution. diff --git a/libs/zlibng/Makefile.in b/libs/zlibng/Makefile.in deleted file mode 100644 index 69fe01165..000000000 --- a/libs/zlibng/Makefile.in +++ /dev/null @@ -1,365 +0,0 @@ -# Makefile for zlib -# Copyright (C) 1995-2016 Jean-loup Gailly, Mark Adler -# For conditions of distribution and use, see copyright notice in zlib.h - -# To compile and test, type: -# ./configure; make test -# Normally configure builds both a static and a shared library. -# If you want to build just a static library, use: ./configure --static - -# To install /usr/local/lib/libz.* and /usr/local/include/zlib.h, type: -# make install -# To install in $HOME instead of /usr/local, use: -# make install prefix=$HOME - -CC=cc - -CFLAGS=-O -#CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7 -#CFLAGS=-g -DZLIB_DEBUG -#CFLAGS=-O3 -Wall -Wwrite-strings -Wpointer-arith -Wconversion \ -# -Wstrict-prototypes -Wmissing-prototypes - -SFLAGS=-O -LDFLAGS=-L. -LIBNAME1=libz-ng -LIBNAME2=zlib-ng -SUFFIX=-ng -TEST_LIBS=$(LIBNAME1).a -LDSHARED=$(CC) -LDSHAREDFLAGS=-shared - -VER=1.9.9 -VER1=1 - -STATICLIB=$(LIBNAME1).a -SHAREDLIB=$(LIBNAME1).so -SHAREDLIBV=$(LIBNAME1).so.$(VER) -SHAREDLIBM=$(LIBNAME1).so.$(VER1) -IMPORTLIB= -SHAREDTARGET=$(LIBNAME1).so.$(VER) -PKGFILE=$(LIBNAME2).pc - -LIBS=$(STATICLIB) $(SHAREDTARGET) - -AR=ar -ARFLAGS=rc -DEFFILE= -RC= -RCFLAGS= -RCOBJS= -STRIP= -RANLIB=ranlib -LDCONFIG=ldconfig -LDSHAREDLIBC=-lc -EXE= - -SRCDIR=. -INCLUDES=-I$(SRCDIR) - -ARCHDIR=arch/generic -ARCH_STATIC_OBJS= -ARCH_SHARED_OBJS= - -prefix = /usr/local -exec_prefix = ${prefix} -bindir = ${exec_prefix}/bin -libdir = ${exec_prefix}/lib -sharedlibdir = ${libdir} -includedir = ${prefix}/include -mandir = ${prefix}/share/man -man3dir = ${mandir}/man3 -pkgconfigdir = ${libdir}/pkgconfig - -OBJZ = adler32.o compress.o crc32.o deflate.o deflate_fast.o deflate_medium.o deflate_slow.o functable.o infback.o inffast.o inflate.o inftrees.o trees.o uncompr.o zutil.o $(ARCH_STATIC_OBJS) -OBJG = gzclose.o gzlib.o gzread.o gzwrite.o -OBJC = $(OBJZ) $(OBJG) - -PIC_OBJZ = adler32.lo compress.lo crc32.lo deflate.lo deflate_fast.lo deflate_medium.lo deflate_slow.lo functable.lo infback.lo inffast.lo inflate.lo inftrees.lo trees.lo uncompr.lo zutil.lo $(ARCH_SHARED_OBJS) -PIC_OBJG = gzclose.lo gzlib.lo gzread.lo gzwrite.lo -PIC_OBJC = $(PIC_OBJZ) $(PIC_OBJG) - -OBJS = $(OBJC) - -PIC_OBJS = $(PIC_OBJC) - -all: static shared - -static: example$(EXE) minigzip$(EXE) fuzzers - -shared: examplesh$(EXE) minigzipsh$(EXE) - -all64: example64$(EXE) minigzip64$(EXE) - -check: test - -.SECONDARY: - -$(ARCHDIR)/%.o: $(SRCDIR)/$(ARCHDIR)/%.c - $(MAKE) -C $(ARCHDIR) $(notdir $@) - -$(ARCHDIR)/%.lo: $(SRCDIR)/$(ARCHDIR)/%.c - $(MAKE) -C $(ARCHDIR) $(notdir $@) - -%.o: $(ARCHDIR)/%.o - -cp $< $@ - -%.lo: $(ARCHDIR)/%.lo - -cp $< $@ - -test: all - $(MAKE) -C test - -# This variable is set by configure. -WITH_FUZZERS= - -# By default, use our own standalone_fuzz_target_runner. -# This runner does no fuzzing, but simply executes the inputs -# provided via parameters. -# Run e.g. "make all LIB_FUZZING_ENGINE=/path/to/libFuzzer.a" -# to link the fuzzer(s) against a real fuzzing engine. -ifeq (,$(LIB_FUZZING_ENGINE)) - LIB_FUZZING_ENGINE = standalone_fuzz_target_runner.o -else - # OSS-Fuzz will define its own value for LIB_FUZZING_ENGINE. - WITH_FUZZERS=1 -endif - -ifeq (1,$(WITH_FUZZERS)) -fuzzers: checksum_fuzzer$(EXE) compress_fuzzer$(EXE) example_small_fuzzer$(EXE) example_large_fuzzer$(EXE) example_flush_fuzzer$(EXE) example_dict_fuzzer$(EXE) minigzip_fuzzer$(EXE) -else -fuzzers: -endif - -# The standalone fuzz target runner. -standalone_fuzz_target_runner.o: - $(CC) $(CFLAGS) $(INCLUDES) -c -o $@ $< -checksum_fuzzer.o: - $(CC) $(CFLAGS) $(INCLUDES) -c -o $@ $< -compress_fuzzer.o: - $(CC) $(CFLAGS) $(INCLUDES) -c -o $@ $< -example_small_fuzzer.o: - $(CC) $(CFLAGS) $(INCLUDES) -c -o $@ $< -example_large_fuzzer.o: - $(CC) $(CFLAGS) $(INCLUDES) -c -o $@ $< -example_flush_fuzzer.o: - $(CC) $(CFLAGS) $(INCLUDES) -c -o $@ $< -example_dict_fuzzer.o: - $(CC) $(CFLAGS) $(INCLUDES) -c -o $@ $< -minigzip_fuzzer.o: - $(CC) $(CFLAGS) -DWITH_GZFILEOP $(INCLUDES) -c -o $@ $< -checksum_fuzzer$(EXE): checksum_fuzzer.o standalone_fuzz_target_runner.o $(STATICLIB) - $(CC) $(LDFLAGS) -o $@ $(LIB_FUZZING_ENGINE) checksum_fuzzer.o $(STATICLIB) -lpthread -compress_fuzzer$(EXE): compress_fuzzer.o standalone_fuzz_target_runner.o $(STATICLIB) - $(CC) $(LDFLAGS) -o $@ $(LIB_FUZZING_ENGINE) compress_fuzzer.o $(STATICLIB) -lpthread -example_small_fuzzer$(EXE): example_small_fuzzer.o standalone_fuzz_target_runner.o $(STATICLIB) - $(CC) $(LDFLAGS) -o $@ $(LIB_FUZZING_ENGINE) example_small_fuzzer.o $(STATICLIB) -lpthread -example_large_fuzzer$(EXE): example_large_fuzzer.o standalone_fuzz_target_runner.o $(STATICLIB) - $(CC) $(LDFLAGS) -o $@ $(LIB_FUZZING_ENGINE) example_large_fuzzer.o $(STATICLIB) -lpthread -example_flush_fuzzer$(EXE): example_flush_fuzzer.o standalone_fuzz_target_runner.o $(STATICLIB) - $(CC) $(LDFLAGS) -o $@ $(LIB_FUZZING_ENGINE) example_flush_fuzzer.o $(STATICLIB) -lpthread -example_dict_fuzzer$(EXE): example_dict_fuzzer.o standalone_fuzz_target_runner.o $(STATICLIB) - $(CC) $(LDFLAGS) -o $@ $(LIB_FUZZING_ENGINE) example_dict_fuzzer.o $(STATICLIB) -lpthread -minigzip_fuzzer$(EXE): minigzip_fuzzer.o standalone_fuzz_target_runner.o $(OBJG) $(STATICLIB) - $(CC) $(LDFLAGS) -o $@ $(LIB_FUZZING_ENGINE) minigzip_fuzzer.o $(OBJG) $(STATICLIB) -lpthread - -infcover.o: $(SRCDIR)/test/infcover.c $(SRCDIR)/zlib$(SUFFIX).h zconf$(SUFFIX).h - $(CC) $(CFLAGS) $(INCLUDES) -c -o $@ $(SRCDIR)/test/infcover.c - -infcover$(EXE): infcover.o $(STATICLIB) - $(CC) $(LDFLAGS) -o $@ infcover.o $(STATICLIB) -ifneq ($(STRIP),) - $(STRIP) $@ -endif - -cover: infcover$(EXE) - rm -f *.gcda - ./infcover - gcov inf*.c - -$(STATICLIB): $(OBJS) - $(AR) $(ARFLAGS) $@ $(OBJS) - -@ ($(RANLIB) $@ || true) >/dev/null 2>&1 - -example.o: - $(CC) $(CFLAGS) -DWITH_GZFILEOP $(INCLUDES) -c -o $@ $(SRCDIR)/test/example.c - -minigzip.o: - $(CC) $(CFLAGS) -DWITH_GZFILEOP $(INCLUDES) -c -o $@ $(SRCDIR)/test/minigzip.c - -example64.o: - $(CC) $(CFLAGS) -DWITH_GZFILEOP -D_FILE_OFFSET_BITS=64 $(INCLUDES) -c -o $@ $(SRCDIR)/test/example.c - -minigzip64.o: - $(CC) $(CFLAGS) -DWITH_GZFILEOP -D_FILE_OFFSET_BITS=64 $(INCLUDES) -c -o $@ $(SRCDIR)/test/minigzip.c - -zlibrc.o: win32/zlib$(SUFFIX)1.rc - $(RC) $(RCFLAGS) -o $@ win32/zlib$(SUFFIX)1.rc - -.SUFFIXES: .lo - -%.o: $(SRCDIR)/%.c - $(CC) $(CFLAGS) $(INCLUDES) -c -o $@ $< - -%.lo: $(SRCDIR)/%.c - $(CC) $(SFLAGS) -DPIC $(INCLUDES) -c -o $@ $< - -$(OBJG): %.o: $(SRCDIR)/%.c - $(CC) $(CFLAGS) -DWITH_GZFILEOP $(INCLUDES) -c -o $@ $< - -$(SHAREDTARGET): $(PIC_OBJS) $(DEFFILE) $(RCOBJS) -ifneq ($(SHAREDTARGET),) - $(LDSHARED) $(LDSHAREDFLAGS) $(LDFLAGS) -o $@ $(DEFFILE) $(PIC_OBJS) $(RCOBJS) $(LDSHAREDLIBC) -ifneq ($(STRIP),) - $(STRIP) $@ -endif -ifneq ($(SHAREDLIB),$(SHAREDTARGET)) - rm -f $(SHAREDLIB) $(SHAREDLIBM) - ln -s $@ $(SHAREDLIB) - ln -s $@ $(SHAREDLIBM) -endif -endif - -example$(EXE): example.o $(OBJG) $(STATICLIB) - $(CC) $(LDFLAGS) -o $@ example.o $(OBJG) $(TEST_LIBS) $(LDSHAREDLIBC) -ifneq ($(STRIP),) - $(STRIP) $@ -endif - -minigzip$(EXE): minigzip.o $(OBJG) $(STATICLIB) - $(CC) $(LDFLAGS) -o $@ minigzip.o $(OBJG) $(TEST_LIBS) $(LDSHAREDLIBC) -ifneq ($(STRIP),) - $(STRIP) $@ -endif - -examplesh$(EXE): example.o $(OBJG) $(SHAREDTARGET) - $(CC) $(LDFLAGS) -o $@ example.o $(OBJG) $(SHAREDTARGET) $(LDSHAREDLIBC) -ifneq ($(STRIP),) - $(STRIP) $@ -endif - -minigzipsh$(EXE): minigzip.o $(OBJG) $(SHAREDTARGET) - $(CC) $(LDFLAGS) -o $@ minigzip.o $(OBJG) $(SHAREDTARGET) $(LDSHAREDLIBC) -ifneq ($(STRIP),) - $(STRIP) $@ -endif - -example64$(EXE): example64.o $(OBJG) $(STATICLIB) - $(CC) $(LDFLAGS) -o $@ example64.o $(OBJG) $(TEST_LIBS) $(LDSHAREDLIBC) -ifneq ($(STRIP),) - $(STRIP) $@ -endif - -minigzip64$(EXE): minigzip64.o $(OBJG) $(STATICLIB) - $(CC) $(LDFLAGS) -o $@ minigzip64.o $(OBJG) $(TEST_LIBS) $(LDSHAREDLIBC) -ifneq ($(STRIP),) - $(STRIP) $@ -endif - -install-shared: $(SHAREDTARGET) -ifneq ($(SHAREDTARGET),) - -@if [ ! -d $(DESTDIR)$(sharedlibdir) ]; then mkdir -p $(DESTDIR)$(sharedlibdir); fi - rm -f $(DESTDIR)$(sharedlibdir)/$(SHAREDTARGET) - cp $(SHAREDTARGET) $(DESTDIR)$(sharedlibdir) - chmod 755 $(DESTDIR)$(sharedlibdir)/$(SHAREDTARGET) -ifneq ($(SHAREDLIB),$(SHAREDTARGET)) - rm -f $(DESTDIR)$(sharedlibdir)/$(SHAREDLIB) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBM) - ln -s $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIB) - ln -s $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBM) - ($(LDCONFIG) || true) >/dev/null 2>&1 -# ldconfig is for Linux -endif -ifneq ($(IMPORTLIB),) - cp $(IMPORTLIB) $(DESTDIR)$(sharedlibdir) - chmod 644 $(DESTDIR)$(sharedlibdir)/$(IMPORTLIB) -endif -endif - -install-static: $(STATICLIB) - -@if [ ! -d $(DESTDIR)$(libdir) ]; then mkdir -p $(DESTDIR)$(libdir); fi - rm -f $(DESTDIR)$(libdir)/$(STATICLIB) - cp $(STATICLIB) $(DESTDIR)$(libdir) - chmod 644 $(DESTDIR)$(libdir)/$(STATICLIB) - -@($(RANLIB) $(DESTDIR)$(libdir)/$(STATICLIB) || true) >/dev/null 2>&1 -# The ranlib in install-static is needed on NeXTSTEP which checks file times - -install-libs: install-shared install-static - -@if [ ! -d $(DESTDIR)$(man3dir) ]; then mkdir -p $(DESTDIR)$(man3dir); fi - -@if [ ! -d $(DESTDIR)$(pkgconfigdir) ]; then mkdir -p $(DESTDIR)$(pkgconfigdir); fi - rm -f $(DESTDIR)$(man3dir)/zlib$(SUFFIX).3 - cp $(SRCDIR)/zlib.3 $(DESTDIR)$(man3dir)/zlib$(SUFFIX).3 - chmod 644 $(DESTDIR)$(man3dir)/zlib$(SUFFIX).3 - rm -f $(DESTDIR)$(pkgconfigdir)/$(PKGFILE) - cp $(PKGFILE) $(DESTDIR)$(pkgconfigdir) - chmod 644 $(DESTDIR)$(pkgconfigdir)/$(PKGFILE) - -install: install-libs - -@if [ ! -d $(DESTDIR)$(includedir) ]; then mkdir -p $(DESTDIR)$(includedir); fi - rm -f $(DESTDIR)$(includedir)/zlib$(SUFFIX).h $(DESTDIR)$(includedir)/zconf$(SUFFIX).h - cp $(SRCDIR)/zlib$(SUFFIX).h $(DESTDIR)$(includedir)/zlib$(SUFFIX).h - cp zconf$(SUFFIX).h $(DESTDIR)$(includedir)/zconf$(SUFFIX).h - chmod 644 $(DESTDIR)$(includedir)/zlib$(SUFFIX).h $(DESTDIR)$(includedir)/zconf$(SUFFIX).h - -uninstall-static: - cd $(DESTDIR)$(libdir) && rm -f $(STATICLIB) - -uninstall-shared: -ifneq ($(SHAREDLIB),) - cd $(DESTDIR)$(sharedlibdir) && rm -f $(SHAREDLIBV) $(SHAREDLIB) $(SHAREDLIBM) -endif -ifneq ($(IMPORTLIB),) - cd $(DESTDIR)$(sharedlibdir) && rm -f $(IMPORTLIB) -endif - -uninstall: uninstall-static uninstall-shared - cd $(DESTDIR)$(includedir) && rm -f zlib$(SUFFIX).h zconf$(SUFFIX).h - cd $(DESTDIR)$(man3dir) && rm -f zlib$(SUFFIX).3 - cd $(DESTDIR)$(pkgconfigdir) && rm -f $(PKGFILE) - -docs: zlib.3.pdf - -zlib.3.pdf: $(SRCDIR)/zlib.3 - groff -mandoc -f H -T ps $(SRCDIR)/zlib.3 | ps2pdf - zlib.3.pdf - -mostlyclean: clean -clean: - @if [ -f $(ARCHDIR)/Makefile ]; then $(MAKE) -C $(ARCHDIR) clean; fi - @if [ -f test/Makefile ]; then $(MAKE) -C test clean; fi - rm -f *.o *.lo *~ \ - example$(EXE) minigzip$(EXE) examplesh$(EXE) minigzipsh$(EXE) \ - example64$(EXE) minigzip64$(EXE) \ - checksum_fuzzer$(EXE) compress_fuzzer$(EXE) example_small_fuzzer$(EXE) example_large_fuzzer$(EXE) \ - example_flush_fuzzer$(EXE) example_dict_fuzzer$(EXE) minigzip_fuzzer$(EXE) \ - infcover \ - $(STATICLIB) $(IMPORTLIB) $(SHAREDLIB) $(SHAREDLIBV) $(SHAREDLIBM) \ - foo.gz so_locations \ - _match.s maketree - rm -rf objs - rm -f *.gcda *.gcno *.gcov - rm -f a.out a.exe - rm -f *.pc - -maintainer-clean: distclean -distclean: clean - @if [ -f $(ARCHDIR)/Makefile ]; then $(MAKE) -C $(ARCHDIR) distclean; fi - @if [ -f test/Makefile ]; then $(MAKE) -C test distclean; fi - rm -f $(PKGFILE) configure.log zconf.h zconf.h.cmakein - -@rm -f .DS_Store -# Reset Makefile if building inside source tree - @if [ -f Makefile.in ]; then \ - printf 'all:\n\t-@echo "Please use ./configure first. Thank you."\n' > Makefile ; \ - printf '\ndistclean:\n\t$(MAKE) -f Makefile.in distclean\n' >> Makefile ; \ - touch -r $(SRCDIR)/Makefile.in Makefile ; fi -# Reset zconf.h and zconf.h.cmakein if building inside source tree - @if [ -f zconf.h.in ]; then \ - cp -p $(SRCDIR)/zconf.h.in zconf.h ; \ - grep -v '^#cmakedefine' $(SRCDIR)/zconf.h.in > zconf.h.cmakein &&\ - touch -r $(SRCDIR)/zconf.h.in zconf.h.cmakein ; fi -# Cleanup these files if building outside source tree - @if [ ! -f zlib.3 ]; then rm -f zlib.3.pdf Makefile; fi -# Remove arch and test directory if building outside source tree - @if [ ! -f $(ARCHDIR)/Makefile.in ]; then rm -rf arch; fi - @if [ ! -f test/Makefile.in ]; then rm -rf test; fi - -tags: - etags $(SRCDIR)/*.[ch] diff --git a/libs/zlibng/README.md b/libs/zlibng/README.md deleted file mode 100644 index b2be6e59f..000000000 --- a/libs/zlibng/README.md +++ /dev/null @@ -1,81 +0,0 @@ -zlib-ng - zlib for the next generation systems - -Maintained by Hans Kristian Rosbach - aka Dead2 (zlib-ng àt circlestorm dót org) - - -Fork Motivation and History ---------------------------- - -The motivation for this fork was due to seeing several 3rd party -contributions containing new optimizations not getting implemented -into the official zlib repository. - -Mark Adler has been maintaining zlib for a very long time, and he has -done a great job and hopefully he will continue for a long time yet. -The idea of zlib-ng is not to replace zlib, but to co-exist as a -drop-in replacement with a lower threshold for code change. - -zlib has a long history and is incredibly portable, even supporting -lots of systems that predate the Internet. This is great, but it does -complicate further development and maintainability. -The zlib code has numerous workarounds for old compilers that do not -understand ANSI-C or to accommodate systems with limitations such as -operating in a 16-bit environment. - -Many of these workarounds are only maintenance burdens, some of them -are pretty huge code-wise. For example, the [v]s[n]printf workaround -code has a whopping 8 different implementations just to cater to -various old compilers. With this many workarounds cluttered throughout -the code, new programmers with an idea/interest for zlib will need -to take some time to figure out why all of these seemingly strange -things are used, and how to work within those confines. - -So I decided to make a fork, merge all the Intel optimizations, merge -the Cloudflare optimizations that did not conflict, plus a couple -of other smaller patches. Then I started cleaning out workarounds, -various dead code, all contrib and example code as there is little -point in having those in this fork for various reasons. - -A lot of improvements have gone into zlib-ng since its start, and -numerous people have contributed both small and big improvements, -or valuable testing. - -Please read LICENSE.md, it is very simple and very liberal. - - -Contributing ------------- - -Zlib-ng is a young project, and we aim to be open to contributions, -and we would be delighted to receive pull requests on github. -Just remember that any code you submit must be your own and it must -be zlib licensed. -Help with testing and reviewing of pull requests etc is also very -much appreciated. - -If you are interested in contributing, please consider joining our -IRC channel #zlib-ng on the Freenode IRC network. - - -Acknowledgments ----------------- - -Thanks to Servebolt.com for sponsoring my maintainership of zlib-ng. - -Thanks go out to all the people and companies who have taken the time -to contribute code reviews, testing and/or patches. Zlib-ng would not -have been nearly as good without you. - -The deflate format used by zlib was defined by Phil Katz. -The deflate and zlib specifications were written by L. Peter Deutsch. - -zlib was originally created by Jean-loup Gailly (compression) -and Mark Adler (decompression). - - -Build Status ------------- - -Travis CI: [![build status](https://api.travis-ci.org/zlib-ng/zlib-ng.svg)](https://travis-ci.org/zlib-ng/zlib-ng/) -Buildkite: [![Build status](https://badge.buildkite.com/7bb1ef84356d3baee26202706cc053ee1de871c0c712b65d26.svg?branch=develop)](https://buildkite.com/circlestorm-productions/zlib-ng) diff --git a/libs/zlibng/README.zlib b/libs/zlibng/README.zlib deleted file mode 100644 index edaad58bc..000000000 --- a/libs/zlibng/README.zlib +++ /dev/null @@ -1,118 +0,0 @@ -ZLIB DATA COMPRESSION LIBRARY - -zlib 1.2.11 is a general purpose data compression library. All the code is -thread safe. The data format used by the zlib library is described by RFCs -(Request for Comments) 1950 to 1952 in the files -http://tools.ietf.org/html/rfc1950 (zlib format), rfc1951 (deflate format) and -rfc1952 (gzip format). - -All functions of the compression library are documented in the file zlib.h -(volunteer to write man pages welcome, contact zlib@gzip.org). A usage example -of the library is given in the file test/example.c which also tests that -the library is working correctly. Another example is given in the file -test/minigzip.c. The compression library itself is composed of all source -files in the root directory. - -To compile all files and run the test program, follow the instructions given at -the top of Makefile.in. In short "./configure; make test", and if that goes -well, "make install" should work for most flavors of Unix. For Windows, use -one of the special makefiles in win32/ or contrib/vstudio/ . For VMS, use -make_vms.com. - -Questions about zlib should be sent to , or to Gilles Vollant - for the Windows DLL version. The zlib home page is -http://zlib.net/ . Before reporting a problem, please check this site to -verify that you have the latest version of zlib; otherwise get the latest -version and check whether the problem still exists or not. - -PLEASE read the zlib FAQ http://zlib.net/zlib_faq.html before asking for help. - -Mark Nelson wrote an article about zlib for the Jan. 1997 -issue of Dr. Dobb's Journal; a copy of the article is available at -http://marknelson.us/1997/01/01/zlib-engine/ . - -The changes made in version 1.2.11 are documented in the file ChangeLog. - -Unsupported third party contributions are provided in directory contrib/ . - -zlib is available in Java using the java.util.zip package, documented at -http://java.sun.com/developer/technicalArticles/Programming/compression/ . - -A Perl interface to zlib written by Paul Marquess is available -at CPAN (Comprehensive Perl Archive Network) sites, including -http://search.cpan.org/~pmqs/IO-Compress-Zlib/ . - -A Python interface to zlib written by A.M. Kuchling is -available in Python 1.5 and later versions, see -http://docs.python.org/library/zlib.html . - -zlib is built into tcl: http://wiki.tcl.tk/4610 . - -An experimental package to read and write files in .zip format, written on top -of zlib by Gilles Vollant , is available in the -contrib/minizip directory of zlib. - - -Notes for some targets: - -- For Windows DLL versions, please see win32/DLL_FAQ.txt - -- For 64-bit Irix, deflate.c must be compiled without any optimization. With - -O, one libpng test fails. The test works in 32 bit mode (with the -n32 - compiler flag). The compiler bug has been reported to SGI. - -- zlib doesn't work with gcc 2.6.3 on a DEC 3000/300LX under OSF/1 2.1 it works - when compiled with cc. - -- On Digital Unix 4.0D (formely OSF/1) on AlphaServer, the cc option -std1 is - necessary to get gzprintf working correctly. This is done by configure. - -- zlib doesn't work on HP-UX 9.05 with some versions of /bin/cc. It works with - other compilers. Use "make test" to check your compiler. - -- gzdopen is not supported on RISCOS or BEOS. - -- For PalmOs, see http://palmzlib.sourceforge.net/ - - -Acknowledgments: - - The deflate format used by zlib was defined by Phil Katz. The deflate and - zlib specifications were written by L. Peter Deutsch. Thanks to all the - people who reported problems and suggested various improvements in zlib; they - are too numerous to cite here. - -Copyright notice: - - (C) 1995-2017 Jean-loup Gailly and Mark Adler - - This software is provided 'as-is', without any express or implied - warranty. In no event will the authors be held liable for any damages - arising from the use of this software. - - Permission is granted to anyone to use this software for any purpose, - including commercial applications, and to alter it and redistribute it - freely, subject to the following restrictions: - - 1. The origin of this software must not be misrepresented; you must not - claim that you wrote the original software. If you use this software - in a product, an acknowledgment in the product documentation would be - appreciated but is not required. - 2. Altered source versions must be plainly marked as such, and must not be - misrepresented as being the original software. - 3. This notice may not be removed or altered from any source distribution. - - Jean-loup Gailly Mark Adler - jloup@gzip.org madler@alumni.caltech.edu - -If you use the zlib library in a product, we would appreciate *not* receiving -lengthy legal documents to sign. The sources are provided for free but without -warranty of any kind. The library has been entirely written by Jean-loup -Gailly and Mark Adler; it does not include third-party code. We make all -contributions to and distributions of this project solely in our personal -capacity, and are not conveying any rights to any intellectual property of -any third parties. - -If you redistribute modified sources, we would appreciate that you include in -the file ChangeLog history information documenting your changes. Please read -the FAQ for more information on the distribution of modified source versions. diff --git a/libs/zlibng/adler32.c b/libs/zlibng/adler32.c deleted file mode 100644 index af4104778..000000000 --- a/libs/zlibng/adler32.c +++ /dev/null @@ -1,132 +0,0 @@ -/* adler32.c -- compute the Adler-32 checksum of a data stream - * Copyright (C) 1995-2011, 2016 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* @(#) $Id$ */ - -#include "zbuild.h" -#include "zutil.h" -#include "functable.h" -#include "adler32_p.h" - -uint32_t adler32_c(uint32_t adler, const unsigned char *buf, size_t len); -static uint32_t adler32_combine_(uint32_t adler1, uint32_t adler2, z_off64_t len2); - -#define DO1(buf, i) {adler += (buf)[i]; sum2 += adler;} -#define DO2(buf, i) DO1(buf, i); DO1(buf, i+1); -#define DO4(buf, i) DO2(buf, i); DO2(buf, i+2); -#define DO8(buf, i) DO4(buf, i); DO4(buf, i+4); -#define DO16(buf) DO8(buf, 0); DO8(buf, 8); - -/* ========================================================================= */ -uint32_t adler32_c(uint32_t adler, const unsigned char *buf, size_t len) { - uint32_t sum2; - unsigned n; - - /* split Adler-32 into component sums */ - sum2 = (adler >> 16) & 0xffff; - adler &= 0xffff; - - /* in case user likes doing a byte at a time, keep it fast */ - if (len == 1) - return adler32_len_1(adler, buf, sum2); - - /* initial Adler-32 value (deferred check for len == 1 speed) */ - if (buf == NULL) - return 1L; - - /* in case short lengths are provided, keep it somewhat fast */ - if (len < 16) - return adler32_len_16(adler, buf, len, sum2); - - /* do length NMAX blocks -- requires just one modulo operation */ - while (len >= NMAX) { - len -= NMAX; -#ifdef UNROLL_MORE - n = NMAX / 16; /* NMAX is divisible by 16 */ -#else - n = NMAX / 8; /* NMAX is divisible by 8 */ -#endif - do { -#ifdef UNROLL_MORE - DO16(buf); /* 16 sums unrolled */ - buf += 16; -#else - DO8(buf, 0); /* 8 sums unrolled */ - buf += 8; -#endif - } while (--n); - MOD(adler); - MOD(sum2); - } - - /* do remaining bytes (less than NMAX, still just one modulo) */ - if (len) { /* avoid modulos if none remaining */ -#ifdef UNROLL_MORE - while (len >= 16) { - len -= 16; - DO16(buf); - buf += 16; -#else - while (len >= 8) { - len -= 8; - DO8(buf, 0); - buf += 8; -#endif - } - while (len) { - --len; - adler += *buf++; - sum2 += adler; - } - MOD(adler); - MOD(sum2); - } - - /* return recombined sums */ - return adler | (sum2 << 16); -} - -uint32_t ZEXPORT PREFIX(adler32_z)(uint32_t adler, const unsigned char *buf, size_t len) { - return functable.adler32(adler, buf, len); -} - -/* ========================================================================= */ -uint32_t ZEXPORT PREFIX(adler32)(uint32_t adler, const unsigned char *buf, uint32_t len) { - return functable.adler32(adler, buf, len); -} - -/* ========================================================================= */ -static uint32_t adler32_combine_(uint32_t adler1, uint32_t adler2, z_off64_t len2) { - uint32_t sum1; - uint32_t sum2; - unsigned rem; - - /* for negative len, return invalid adler32 as a clue for debugging */ - if (len2 < 0) - return 0xffffffff; - - /* the derivation of this formula is left as an exercise for the reader */ - MOD63(len2); /* assumes len2 >= 0 */ - rem = (unsigned)len2; - sum1 = adler1 & 0xffff; - sum2 = rem * sum1; - MOD(sum2); - sum1 += (adler2 & 0xffff) + BASE - 1; - sum2 += ((adler1 >> 16) & 0xffff) + ((adler2 >> 16) & 0xffff) + BASE - rem; - if (sum1 >= BASE) sum1 -= BASE; - if (sum1 >= BASE) sum1 -= BASE; - if (sum2 >= ((unsigned long)BASE << 1)) sum2 -= ((unsigned long)BASE << 1); - if (sum2 >= BASE) sum2 -= BASE; - return sum1 | (sum2 << 16); -} - -/* ========================================================================= */ -uint32_t ZEXPORT PREFIX(adler32_combine)(uint32_t adler1, uint32_t adler2, z_off_t len2) { - return adler32_combine_(adler1, adler2, len2); -} - -uint32_t ZEXPORT PREFIX(adler32_combine64)(uint32_t adler1, uint32_t adler2, z_off64_t len2) { - return adler32_combine_(adler1, adler2, len2); -} diff --git a/libs/zlibng/adler32_p.h b/libs/zlibng/adler32_p.h deleted file mode 100644 index 676653040..000000000 --- a/libs/zlibng/adler32_p.h +++ /dev/null @@ -1,77 +0,0 @@ -/* adler32_p.h -- Private inline functions and macros shared with - * different computation of the Adler-32 checksum - * of a data stream. - * Copyright (C) 1995-2011, 2016 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -#ifndef ADLER32_P_H -#define ADLER32_P_H - -#define BASE 65521U /* largest prime smaller than 65536 */ -#define NMAX 5552 -/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */ - -/* use NO_DIVIDE if your processor does not do division in hardware -- - try it both ways to see which is faster */ -#ifdef NO_DIVIDE -/* note that this assumes BASE is 65521, where 65536 % 65521 == 15 - (thank you to John Reiser for pointing this out) */ -# define CHOP(a) \ - do { \ - uint32_t tmp = a >> 16; \ - a &= 0xffff; \ - a += (tmp << 4) - tmp; \ - } while (0) -# define MOD28(a) \ - do { \ - CHOP(a); \ - if (a >= BASE) a -= BASE; \ - } while (0) -# define MOD(a) \ - do { \ - CHOP(a); \ - MOD28(a); \ - } while (0) -# define MOD63(a) \ - do { /* this assumes a is not negative */ \ - z_off64_t tmp = a >> 32; \ - a &= 0xffffffffL; \ - a += (tmp << 8) - (tmp << 5) + tmp; \ - tmp = a >> 16; \ - a &= 0xffffL; \ - a += (tmp << 4) - tmp; \ - tmp = a >> 16; \ - a &= 0xffffL; \ - a += (tmp << 4) - tmp; \ - if (a >= BASE) a -= BASE; \ - } while (0) -#else -# define MOD(a) a %= BASE -# define MOD28(a) a %= BASE -# define MOD63(a) a %= BASE -#endif - -static inline uint32_t adler32_len_1(uint32_t adler, const unsigned char *buf, uint32_t sum2) { - adler += buf[0]; - if (adler >= BASE) - adler -= BASE; - sum2 += adler; - if (sum2 >= BASE) - sum2 -= BASE; - return adler | (sum2 << 16); -} - -static inline uint32_t adler32_len_16(uint32_t adler, const unsigned char *buf, size_t len, uint32_t sum2) { - while (len) { - --len; - adler += *buf++; - sum2 += adler; - } - if (adler >= BASE) - adler -= BASE; - MOD28(sum2); /* only added so many BASE's */ - return adler | (sum2 << 16); -} - -#endif /* ADLER32_P_H */ diff --git a/libs/zlibng/arch/.gitignore b/libs/zlibng/arch/.gitignore deleted file mode 100644 index 2c3af0a08..000000000 --- a/libs/zlibng/arch/.gitignore +++ /dev/null @@ -1,2 +0,0 @@ -# ignore Makefiles; they're all automatically generated -Makefile diff --git a/libs/zlibng/arch/arm/Makefile.in b/libs/zlibng/arch/arm/Makefile.in deleted file mode 100644 index a64d591e5..000000000 --- a/libs/zlibng/arch/arm/Makefile.in +++ /dev/null @@ -1,54 +0,0 @@ -# Makefile for zlib -# Copyright (C) 1995-2013 Jean-loup Gailly, Mark Adler -# For conditions of distribution and use, see copyright notice in zlib.h - -CC= -CFLAGS= -SFLAGS= -INCLUDES= -SUFFIX= - -SRCDIR=. -SRCTOP=../.. -TOPDIR=$(SRCTOP) - -all: adler32_neon.o adler32_neon.lo armfeature.o armfeature.lo crc32_acle.o crc32_acle.lo fill_window_arm.o fill_window_arm.lo insert_string_acle.o insert_string_acle.lo - -adler32_neon.o: - $(CC) $(CFLAGS) $(INCLUDES) -c -o $@ $(SRCDIR)/adler32_neon.c - -adler32_neon.lo: - $(CC) $(SFLAGS) $(INCLUDES) -c -o $@ $(SRCDIR)/adler32_neon.c - -armfeature.o: - $(CC) $(CFLAGS) $(INCLUDES) -c -o $@ $(SRCDIR)/armfeature.c - -armfeature.lo: - $(CC) $(SFLAGS) $(INCLUDES) -c -o $@ $(SRCDIR)/armfeature.c - -crc32_acle.o: - $(CC) $(CFLAGS) $(INCLUDES) -c -o $@ $(SRCDIR)/crc32_acle.c - -crc32_acle.lo: - $(CC) $(SFLAGS) $(INCLUDES) -c -o $@ $(SRCDIR)/crc32_acle.c - -fill_window_arm.o: - $(CC) $(CFLAGS) $(INCLUDES) -c -o $@ $(SRCDIR)/fill_window_arm.c - -fill_window_arm.lo: - $(CC) $(SFLAGS) $(INCLUDES) -c -o $@ $(SRCDIR)/fill_window_arm.c - -insert_string_acle.o: - $(CC) $(CFLAGS) $(INCLUDES) -c -o $@ $(SRCDIR)/insert_string_acle.c - -insert_string_acle.lo: - $(CC) $(SFLAGS) $(INCLUDES) -c -o $@ $(SRCDIR)/insert_string_acle.c - -mostlyclean: clean -clean: - rm -f *.o *.lo *~ - rm -rf objs - rm -f *.gcda *.gcno *.gcov - -distclean: - rm -f Makefile diff --git a/libs/zlibng/arch/arm/adler32_neon.c b/libs/zlibng/arch/arm/adler32_neon.c deleted file mode 100644 index 3e0ee4dd8..000000000 --- a/libs/zlibng/arch/arm/adler32_neon.c +++ /dev/null @@ -1,134 +0,0 @@ -/* Copyright (C) 1995-2011, 2016 Mark Adler - * Copyright (C) 2017 ARM Holdings Inc. - * Author: Adenilson Cavalcanti - * - * This software is provided 'as-is', without any express or implied - * warranty. In no event will the authors be held liable for any damages - * arising from the use of this software. - * Permission is granted to anyone to use this software for any purpose, - * including commercial applications, and to alter it and redistribute it - * freely, subject to the following restrictions: - * 1. The origin of this software must not be misrepresented; you must not - * claim that you wrote the original software. If you use this software - * in a product, an acknowledgment in the product documentation would be - * appreciated but is not required. - * 2. Altered source versions must be plainly marked as such, and must not be - * misrepresented as being the original software. - * 3. This notice may not be removed or altered from any source distribution. - */ -#include "adler32_neon.h" -#if defined(__ARM_NEON__) || defined(__ARM_NEON) -#include -#include "adler32_p.h" - -static void NEON_accum32(uint32_t *s, const unsigned char *buf, size_t len) { - static const uint8_t taps[32] = { - 32, 31, 30, 29, 28, 27, 26, 25, - 24, 23, 22, 21, 20, 19, 18, 17, - 16, 15, 14, 13, 12, 11, 10, 9, - 8, 7, 6, 5, 4, 3, 2, 1 }; - - uint32x2_t adacc2, s2acc2, as; - uint8x16_t t0 = vld1q_u8(taps), t1 = vld1q_u8(taps + 16); - - uint32x4_t adacc = vdupq_n_u32(0), s2acc = vdupq_n_u32(0); - adacc = vsetq_lane_u32(s[0], adacc, 0); - s2acc = vsetq_lane_u32(s[1], s2acc, 0); - - while (len >= 2) { - uint8x16_t d0 = vld1q_u8(buf), d1 = vld1q_u8(buf + 16); - uint16x8_t adler, sum2; - s2acc = vaddq_u32(s2acc, vshlq_n_u32(adacc, 5)); - adler = vpaddlq_u8( d0); - adler = vpadalq_u8(adler, d1); - sum2 = vmull_u8( vget_low_u8(t0), vget_low_u8(d0)); - sum2 = vmlal_u8(sum2, vget_high_u8(t0), vget_high_u8(d0)); - sum2 = vmlal_u8(sum2, vget_low_u8(t1), vget_low_u8(d1)); - sum2 = vmlal_u8(sum2, vget_high_u8(t1), vget_high_u8(d1)); - adacc = vpadalq_u16(adacc, adler); - s2acc = vpadalq_u16(s2acc, sum2); - len -= 2; - buf += 32; - } - - while (len > 0) { - uint8x16_t d0 = vld1q_u8(buf); - uint16x8_t adler, sum2; - s2acc = vaddq_u32(s2acc, vshlq_n_u32(adacc, 4)); - adler = vpaddlq_u8(d0); - sum2 = vmull_u8( vget_low_u8(t1), vget_low_u8(d0)); - sum2 = vmlal_u8(sum2, vget_high_u8(t1), vget_high_u8(d0)); - adacc = vpadalq_u16(adacc, adler); - s2acc = vpadalq_u16(s2acc, sum2); - buf += 16; - len--; - } - - adacc2 = vpadd_u32(vget_low_u32(adacc), vget_high_u32(adacc)); - s2acc2 = vpadd_u32(vget_low_u32(s2acc), vget_high_u32(s2acc)); - as = vpadd_u32(adacc2, s2acc2); - s[0] = vget_lane_u32(as, 0); - s[1] = vget_lane_u32(as, 1); -} - -static void NEON_handle_tail(uint32_t *pair, const unsigned char *buf, size_t len) { - unsigned int i; - for (i = 0; i < len; ++i) { - pair[0] += buf[i]; - pair[1] += pair[0]; - } -} - -uint32_t adler32_neon(uint32_t adler, const unsigned char *buf, size_t len) { - /* split Adler-32 into component sums */ - uint32_t sum2 = (adler >> 16) & 0xffff; - adler &= 0xffff; - - /* in case user likes doing a byte at a time, keep it fast */ - if (len == 1) - return adler32_len_1(adler, buf, sum2); - - /* initial Adler-32 value (deferred check for len == 1 speed) */ - if (buf == NULL) - return 1L; - - /* in case short lengths are provided, keep it somewhat fast */ - if (len < 16) - return adler32_len_16(adler, buf, len, sum2); - - uint32_t pair[2]; - int n = NMAX; - unsigned int done = 0; - unsigned int i; - - /* Split Adler-32 into component sums, it can be supplied by - * the caller sites (e.g. in a PNG file). - */ - pair[0] = adler; - pair[1] = sum2; - - for (i = 0; i < len; i += n) { - if ((i + n) > len) - n = len - i; - - if (n < 16) - break; - - NEON_accum32(pair, buf + i, n / 16); - pair[0] %= BASE; - pair[1] %= BASE; - - done += (n / 16) * 16; - } - - /* Handle the tail elements. */ - if (done < len) { - NEON_handle_tail(pair, (buf + done), len - done); - pair[0] %= BASE; - pair[1] %= BASE; - } - - /* D = B * 65536 + A, see: https://en.wikipedia.org/wiki/Adler-32. */ - return (pair[1] << 16) | pair[0]; -} -#endif diff --git a/libs/zlibng/arch/arm/adler32_neon.h b/libs/zlibng/arch/arm/adler32_neon.h deleted file mode 100644 index 1cb278c7c..000000000 --- a/libs/zlibng/arch/arm/adler32_neon.h +++ /dev/null @@ -1,29 +0,0 @@ -/* Copyright (C) 1995-2011, 2016 Mark Adler - * Copyright (C) 2017 ARM Holdings Inc. - * Author: Adenilson Cavalcanti - * - * This software is provided 'as-is', without any express or implied - * warranty. In no event will the authors be held liable for any damages - * arising from the use of this software. - * Permission is granted to anyone to use this software for any purpose, - * including commercial applications, and to alter it and redistribute it - * freely, subject to the following restrictions: - * 1. The origin of this software must not be misrepresented; you must not - * claim that you wrote the original software. If you use this software - * in a product, an acknowledgment in the product documentation would be - * appreciated but is not required. - * 2. Altered source versions must be plainly marked as such, and must not be - * misrepresented as being the original software. - * 3. This notice may not be removed or altered from any source distribution. - */ -#ifndef __ADLER32_NEON__ -#define __ADLER32_NEON__ - -#if defined(__ARM_NEON__) || defined(__ARM_NEON) -// Depending on the compiler flavor, size_t may be defined in one or the other header. See: -// http://stackoverflow.com/questions/26410466/gcc-linaro-compiler-throws-error-unknown-type-name-size-t -#include -#include -uint32_t adler32_neon(uint32_t adler, const unsigned char *buf, size_t len); -#endif -#endif diff --git a/libs/zlibng/arch/arm/arm.h b/libs/zlibng/arch/arm/arm.h deleted file mode 100644 index baee87f18..000000000 --- a/libs/zlibng/arch/arm/arm.h +++ /dev/null @@ -1,13 +0,0 @@ -/* arm.h -- check for ARM features. - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -#ifndef ARM_H_ -#define ARM_H_ - -extern int arm_cpu_has_neon; -extern int arm_cpu_has_crc32; - -void ZLIB_INTERNAL arm_check_features(void); - -#endif /* ARM_H_ */ diff --git a/libs/zlibng/arch/arm/armfeature.c b/libs/zlibng/arch/arm/armfeature.c deleted file mode 100644 index f7ccdc460..000000000 --- a/libs/zlibng/arch/arm/armfeature.c +++ /dev/null @@ -1,50 +0,0 @@ -#include "zutil.h" - -#if defined(__linux__) -# include -# include -#elif defined(_WIN32) -# include -#endif - -static int arm_has_crc32() { -#if defined(__linux__) && defined(HWCAP2_CRC32) - return (getauxval(AT_HWCAP2) & HWCAP2_CRC32) != 0 ? 1 : 0; -#elif defined(ARM_NOCHECK_ACLE) - return 1; -#else - return 0; -#endif -} - -/* AArch64 has neon. */ -#if !defined(__aarch64__) -static inline int arm_has_neon() -{ - #if defined(__linux__) && defined(HWCAP_NEON) - return (getauxval(AT_HWCAP) & HWCAP_NEON) != 0 ? 1 : 0; - #elif defined(_M_ARM) && defined(WINAPI_FAMILY_PARTITION) - #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_PHONE_APP) - return 1; /* Always supported */ - #endif - #endif - - #if defined(ARM_NOCHECK_NEON) - return 1; - #else - return 0; - #endif -} -#endif - -ZLIB_INTERNAL int arm_cpu_has_neon; -ZLIB_INTERNAL int arm_cpu_has_crc32; - -void ZLIB_INTERNAL arm_check_features(void) { -#if defined(__aarch64__) - arm_cpu_has_neon = 1; /* always available */ -#else - arm_cpu_has_neon = arm_has_neon(); -#endif - arm_cpu_has_crc32 = arm_has_crc32(); -} diff --git a/libs/zlibng/arch/arm/crc32_acle.c b/libs/zlibng/arch/arm/crc32_acle.c deleted file mode 100644 index 540603545..000000000 --- a/libs/zlibng/arch/arm/crc32_acle.c +++ /dev/null @@ -1,115 +0,0 @@ -/* crc32_acle.c -- compute the CRC-32 of a data stream - * Copyright (C) 1995-2006, 2010, 2011, 2012 Mark Adler - * Copyright (C) 2016 Yang Zhang - * For conditions of distribution and use, see copyright notice in zlib.h - * -*/ - -#ifdef __ARM_FEATURE_CRC32 -# include -# ifdef ZLIB_COMPAT -# include -# else -# include -# endif -# ifdef __linux__ -# include -# endif - -uint32_t crc32_acle(uint32_t crc, const unsigned char *buf, uint64_t len) { - register uint32_t c; - register const uint16_t *buf2; - register const uint32_t *buf4; - - c = ~crc; - if (len && ((ptrdiff_t)buf & 1)) { - c = __crc32b(c, *buf++); - len--; - } - - if ((len > sizeof(uint16_t)) && ((ptrdiff_t)buf & sizeof(uint16_t))) { - buf2 = (const uint16_t *) buf; - c = __crc32h(c, *buf2++); - len -= sizeof(uint16_t); - buf4 = (const uint32_t *) buf2; - } else { - buf4 = (const uint32_t *) buf; - } - -# if defined(__aarch64__) - if ((len > sizeof(uint32_t)) && ((ptrdiff_t)buf & sizeof(uint32_t))) { - c = __crc32w(c, *buf4++); - len -= sizeof(uint32_t); - } - - const uint64_t *buf8 = (const uint64_t *) buf4; - -# ifdef UNROLL_MORE - while (len >= 4 * sizeof(uint64_t)) { - c = __crc32d(c, *buf8++); - c = __crc32d(c, *buf8++); - c = __crc32d(c, *buf8++); - c = __crc32d(c, *buf8++); - len -= 4 * sizeof(uint64_t); - } -# endif - - while (len >= sizeof(uint64_t)) { - c = __crc32d(c, *buf8++); - len -= sizeof(uint64_t); - } - - if (len >= sizeof(uint32_t)) { - buf4 = (const uint32_t *) buf8; - c = __crc32w(c, *buf4++); - len -= sizeof(uint32_t); - buf2 = (const uint16_t *) buf4; - } else { - buf2 = (const uint16_t *) buf8; - } - - if (len >= sizeof(uint16_t)) { - c = __crc32h(c, *buf2++); - len -= sizeof(uint16_t); - } - - buf = (const unsigned char *) buf2; -# else /* __aarch64__ */ - -# ifdef UNROLL_MORE - while (len >= 8 * sizeof(uint32_t)) { - c = __crc32w(c, *buf4++); - c = __crc32w(c, *buf4++); - c = __crc32w(c, *buf4++); - c = __crc32w(c, *buf4++); - c = __crc32w(c, *buf4++); - c = __crc32w(c, *buf4++); - c = __crc32w(c, *buf4++); - c = __crc32w(c, *buf4++); - len -= 8 * sizeof(uint32_t); - } -# endif - - while (len >= sizeof(uint32_t)) { - c = __crc32w(c, *buf4++); - len -= sizeof(uint32_t); - } - - if (len >= sizeof(uint16_t)) { - buf2 = (const uint16_t *) buf4; - c = __crc32h(c, *buf2++); - len -= sizeof(uint16_t); - buf = (const unsigned char *) buf2; - } else { - buf = (const unsigned char *) buf4; - } -# endif /* __aarch64__ */ - - if (len) { - c = __crc32b(c, *buf); - } - - c = ~c; - return c; -} -#endif /* __ARM_FEATURE_CRC32 */ diff --git a/libs/zlibng/arch/arm/ctzl.h b/libs/zlibng/arch/arm/ctzl.h deleted file mode 100644 index 5ebbde456..000000000 --- a/libs/zlibng/arch/arm/ctzl.h +++ /dev/null @@ -1,12 +0,0 @@ -#ifndef ARM_CTZL_H -#define ARM_CTZL_H - -#include - -#if defined(_MSC_VER) && !defined(__clang__) -static __forceinline unsigned long __builtin_ctzl(unsigned long value) { - return _arm_clz(_arm_rbit(value)); -} -#endif - -#endif diff --git a/libs/zlibng/arch/arm/fill_window_arm.c b/libs/zlibng/arch/arm/fill_window_arm.c deleted file mode 100644 index c9f042a0d..000000000 --- a/libs/zlibng/arch/arm/fill_window_arm.c +++ /dev/null @@ -1,169 +0,0 @@ -/* fill_window_arm.c -- Optimized hash table shifting for ARM with support for NEON instructions - * Copyright (C) 2017 Mika T. Lindqvist - * - * Authors: - * Mika T. Lindqvist - * Jun He - * - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* @(#) $Id$ */ - -#include "zbuild.h" -#include "deflate.h" -#include "deflate_p.h" -#include "functable.h" - -extern ZLIB_INTERNAL int read_buf(PREFIX3(stream) *strm, unsigned char *buf, unsigned size); - -#if defined(__ARM_NEON__) || defined(__ARM_NEON) -#include - -/* SIMD version of hash_chain rebase */ -static inline void slide_hash_chain(Pos *table, unsigned int entries, uint16_t window_size) { - register uint16x8_t v, *p; - register size_t n; - - size_t size = entries*sizeof(table[0]); - Assert((size % sizeof(uint16x8_t) * 8 == 0), "hash table size err"); - - Assert(sizeof(Pos) == 2, "Wrong Pos size"); - v = vdupq_n_u16(window_size); - - p = (uint16x8_t *)table; - n = size / (sizeof(uint16x8_t) * 8); - do { - p[0] = vqsubq_u16(p[0], v); - p[1] = vqsubq_u16(p[1], v); - p[2] = vqsubq_u16(p[2], v); - p[3] = vqsubq_u16(p[3], v); - p[4] = vqsubq_u16(p[4], v); - p[5] = vqsubq_u16(p[5], v); - p[6] = vqsubq_u16(p[6], v); - p[7] = vqsubq_u16(p[7], v); - p += 8; - } while (--n); -} -#else -/* generic version for hash rebase */ -static inline void slide_hash_chain(Pos *table, unsigned int entries, uint16_t window_size) { - unsigned int i; - for (i = 0; i < entries; i++) { - table[i] = (table[i] >= window_size) ? (table[i] - window_size) : NIL; - } -} -#endif - -void fill_window_arm(deflate_state *s) { - register unsigned n; - unsigned long more; /* Amount of free space at the end of the window. */ - unsigned int wsize = s->w_size; - - Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead"); - - do { - more = s->window_size - s->lookahead - s->strstart; - - /* If the window is almost full and there is insufficient lookahead, - * move the upper half to the lower one to make room in the upper half. - */ - if (s->strstart >= wsize+MAX_DIST(s)) { - memcpy(s->window, s->window+wsize, wsize); - s->match_start -= wsize; - s->strstart -= wsize; /* we now have strstart >= MAX_DIST */ - s->block_start -= wsize; - - /* Slide the hash table (could be avoided with 32 bit values - at the expense of memory usage). We slide even when level == 0 - to keep the hash table consistent if we switch back to level > 0 - later. (Using level 0 permanently is not an optimal usage of - zlib, so we don't care about this pathological case.) - */ - - slide_hash_chain(s->head, s->hash_size, wsize); - slide_hash_chain(s->prev, wsize, wsize); - more += wsize; - } - if (s->strm->avail_in == 0) - break; - - /* If there was no sliding: - * strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 && - * more == window_size - lookahead - strstart - * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1) - * => more >= window_size - 2*WSIZE + 2 - * In the BIG_MEM or MMAP case (not yet supported), - * window_size == input_size + MIN_LOOKAHEAD && - * strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD. - * Otherwise, window_size == 2*WSIZE so more >= 2. - * If there was sliding, more >= WSIZE. So in all cases, more >= 2. - */ - Assert(more >= 2, "more < 2"); - - n = read_buf(s->strm, s->window + s->strstart + s->lookahead, more); - s->lookahead += n; - - /* Initialize the hash value now that we have some input: */ - if (s->lookahead + s->insert >= MIN_MATCH) { - unsigned int str = s->strstart - s->insert; - unsigned int insert_cnt = s->insert; - unsigned int slen; - - s->ins_h = s->window[str]; - - if (unlikely(s->lookahead < MIN_MATCH)) - insert_cnt += s->lookahead - MIN_MATCH; - slen = insert_cnt; - if (str >= (MIN_MATCH - 2)) - { - str += 2 - MIN_MATCH; - insert_cnt += MIN_MATCH - 2; - } - if (insert_cnt > 0) - { - functable.insert_string(s, str, insert_cnt); - s->insert -= slen; - } - } - /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage, - * but this is not important since only literal bytes will be emitted. - */ - } while (s->lookahead < MIN_LOOKAHEAD && s->strm->avail_in != 0); - - /* If the WIN_INIT bytes after the end of the current data have never been - * written, then zero those bytes in order to avoid memory check reports of - * the use of uninitialized (or uninitialised as Julian writes) bytes by - * the longest match routines. Update the high water mark for the next - * time through here. WIN_INIT is set to MAX_MATCH since the longest match - * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead. - */ - if (s->high_water < s->window_size) { - unsigned long curr = s->strstart + (unsigned long)s->lookahead; - unsigned long init; - - if (s->high_water < curr) { - /* Previous high water mark below current data -- zero WIN_INIT - * bytes or up to end of window, whichever is less. - */ - init = s->window_size - curr; - if (init > WIN_INIT) - init = WIN_INIT; - memset(s->window + curr, 0, init); - s->high_water = curr + init; - } else if (s->high_water < curr + WIN_INIT) { - /* High water mark at or above current data, but below current data - * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up - * to end of window, whichever is less. - */ - init = curr + WIN_INIT; - if (init > s->window_size) - init = s->window_size; - init -= s->high_water; - memset(s->window + s->high_water, 0, init); - s->high_water += init; - } - } - - Assert((unsigned long)s->strstart <= s->window_size - MIN_LOOKAHEAD, "not enough room for search"); -} diff --git a/libs/zlibng/arch/arm/insert_string_acle.c b/libs/zlibng/arch/arm/insert_string_acle.c deleted file mode 100644 index 081b936ce..000000000 --- a/libs/zlibng/arch/arm/insert_string_acle.c +++ /dev/null @@ -1,53 +0,0 @@ -/* insert_string_acle.c -- insert_string variant using ACLE's CRC instructions - * - * Copyright (C) 1995-2013 Jean-loup Gailly and Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - * - */ - -#if defined(__ARM_FEATURE_CRC32) && defined(ARM_ACLE_CRC_HASH) -#include -#include "zbuild.h" -#include "deflate.h" - -/* =========================================================================== - * Insert string str in the dictionary and set match_head to the previous head - * of the hash chain (the most recent string with same hash key). Return - * the previous length of the hash chain. - * IN assertion: all calls to to INSERT_STRING are made with consecutive - * input characters and the first MIN_MATCH bytes of str are valid - * (except for the last MIN_MATCH-1 bytes of the input file). - */ -Pos insert_string_acle(deflate_state *const s, const Pos str, unsigned int count) { - Pos p, lp, ret; - - if (unlikely(count == 0)) { - return s->prev[str & s->w_mask]; - } - - ret = 0; - lp = str + count - 1; /* last position */ - - for (p = str; p <= lp; p++) { - uint32_t val, h, hm; - memcpy(&val, &s->window[p], sizeof(val)); - - if (s->level >= TRIGGER_LEVEL) - val &= 0xFFFFFF; - - h = __crc32w(0, val); - hm = h & s->hash_mask; - - Pos head = s->head[hm]; - if (head != p) { - s->prev[p & s->w_mask] = head; - s->head[hm] = p; - if (p == lp) - ret = head; - } else if (p == lp) { - ret = p; - } - } - return ret; -} -#endif diff --git a/libs/zlibng/arch/generic/Makefile.in b/libs/zlibng/arch/generic/Makefile.in deleted file mode 100644 index be8c18545..000000000 --- a/libs/zlibng/arch/generic/Makefile.in +++ /dev/null @@ -1,21 +0,0 @@ -# Makefile for zlib -# Copyright (C) 1995-2013 Jean-loup Gailly, Mark Adler -# For conditions of distribution and use, see copyright notice in zlib.h - -CC= -CFLAGS= -SFLAGS= -INCLUDES= - -SRCDIR=. -SRCTOP=../.. -TOPDIR=$(SRCTOP) - -all: - - -mostlyclean: clean -clean: - rm -f *.o *.lo *~ \ - rm -rf objs - rm -f *.gcda *.gcno *.gcov diff --git a/libs/zlibng/arch/s390/Makefile.in b/libs/zlibng/arch/s390/Makefile.in deleted file mode 100644 index 2652fe62d..000000000 --- a/libs/zlibng/arch/s390/Makefile.in +++ /dev/null @@ -1,40 +0,0 @@ -# Makefile for zlib-ng -# Copyright (C) 1995-2013 Jean-loup Gailly, Mark Adler -# For conditions of distribution and use, see copyright notice in zlib.h - -CC= -CFLAGS= -SFLAGS= -INCLUDES= -SUFFIX= - -SRCDIR=. -SRCTOP=../.. -TOPDIR=$(SRCTOP) - -dfltcc_common.o: - $(CC) $(CFLAGS) $(INCLUDES) -c -o $@ $(SRCDIR)/dfltcc_common.c - -dfltcc_common.lo: - $(CC) $(SFLAGS) $(INCLUDES) -c -o $@ $(SRCDIR)/dfltcc_common.c - -dfltcc_deflate.o: - $(CC) $(CFLAGS) $(INCLUDES) -c -o $@ $(SRCDIR)/dfltcc_deflate.c - -dfltcc_deflate.lo: - $(CC) $(SFLAGS) $(INCLUDES) -c -o $@ $(SRCDIR)/dfltcc_deflate.c - -dfltcc_inflate.o: - $(CC) $(CFLAGS) $(INCLUDES) -c -o $@ $(SRCDIR)/dfltcc_inflate.c - -dfltcc_inflate.lo: - $(CC) $(SFLAGS) $(INCLUDES) -c -o $@ $(SRCDIR)/dfltcc_inflate.c - -mostlyclean: clean -clean: - rm -f *.o *.lo *~ - rm -rf objs - rm -f *.gcda *.gcno *.gcov - -distclean: - rm -f Makefile diff --git a/libs/zlibng/arch/s390/README.md b/libs/zlibng/arch/s390/README.md deleted file mode 100644 index 6995b106e..000000000 --- a/libs/zlibng/arch/s390/README.md +++ /dev/null @@ -1,69 +0,0 @@ -This directory contains IBM Z DEFLATE CONVERSION CALL support for -zlib-ng. In order to enable it, the following build commands should be -used: - - $ ./configure --with-dfltcc-deflate --with-dfltcc-inflate - $ make - -or - - $ cmake -DWITH_DFLTCC_DEFLATE=1 -DWITH_DFLTCC_INFLATE=1 . - $ make - -When built like this, zlib-ng would compress in hardware on level 1, -and in software on all other levels. Decompression will always happen -in hardware. In order to enable DFLTCC compression for levels 1-6 (i.e. -to make it used by default) one could add -DDFLTCC_LEVEL_MASK=0x7e to -CFLAGS when building zlib-ng. - -Two DFLTCC compression calls produce the same results only when they -both are made on machines of the same generation, and when the -respective buffers have the same offset relative to the start of the -page. Therefore care should be taken when using hardware compression -when reproducible results are desired. - -DFLTCC does not support every single zlib-ng feature, in particular: - -* inflate(Z_BLOCK) and inflate(Z_TREES) -* inflateMark() -* inflatePrime() -* deflateParams() after the first deflate() call - -When used, these functions will either switch to software, or, in case -this is not possible, gracefully fail. - -All SystemZ-specific code lives in a separate file and is integrated -with the rest of zlib-ng using hook macros, which are explained below. - -DFLTCC takes as arguments a parameter block, an input buffer, an output -buffer and a window. ZALLOC_STATE, ZFREE_STATE, ZCOPY_STATE, -ZALLOC_WINDOW and TRY_FREE_WINDOW macros encapsulate allocation details -for the parameter block (which is allocated alongside zlib-ng state) -and the window (which must be page-aligned). - -While for inflate software and hardware window formats match, this is -not the case for deflate. Therefore, deflateSetDictionary and -deflateGetDictionary need special handling, which is triggered using -the DEFLATE_SET_DICTIONARY_HOOK and DEFLATE_GET_DICTIONARY_HOOK macros. - -deflateResetKeep() and inflateResetKeep() update the DFLTCC parameter -block using DEFLATE_RESET_KEEP_HOOK and INFLATE_RESET_KEEP_HOOK macros. - -DEFLATE_PARAMS_HOOK, INFLATE_PRIME_HOOK and INFLATE_MARK_HOOK macros -make the unsupported deflateParams(), inflatePrime() and inflateMark() -calls fail gracefully. - -The algorithm implemented in hardware has different compression ratio -than the one implemented in software. DEFLATE_BOUND_ADJUST_COMPLEN and -DEFLATE_NEED_CONSERVATIVE_BOUND macros make deflateBound() return the -correct results for the hardware implementation. - -Actual compression and decompression are handled by DEFLATE_HOOK and -INFLATE_TYPEDO_HOOK macros. Since inflation with DFLTCC manages the -window on its own, calling updatewindow() is suppressed using -INFLATE_NEED_UPDATEWINDOW() macro. - -In addition to compression, DFLTCC computes CRC-32 and Adler-32 -checksums, therefore, whenever it's used, software checksumming is -suppressed using DEFLATE_NEED_CHECKSUM and INFLATE_NEED_CHECKSUM -macros. diff --git a/libs/zlibng/arch/s390/dfltcc_common.c b/libs/zlibng/arch/s390/dfltcc_common.c deleted file mode 100644 index 2f2e22fd0..000000000 --- a/libs/zlibng/arch/s390/dfltcc_common.c +++ /dev/null @@ -1,86 +0,0 @@ -/* dfltcc_deflate.c - IBM Z DEFLATE CONVERSION CALL general support. */ - -#include "zbuild.h" -#include "dfltcc_common.h" -#include "dfltcc_detail.h" - -/* - Memory management. - - DFLTCC requires parameter blocks and window to be aligned. zlib-ng allows - users to specify their own allocation functions, so using e.g. - `posix_memalign' is not an option. Thus, we overallocate and take the - aligned portion of the buffer. -*/ -static inline int is_dfltcc_enabled(void) -{ - uint64_t facilities[(DFLTCC_FACILITY / 64) + 1]; - register uint8_t r0 __asm__("r0"); - - memset(facilities, 0, sizeof(facilities)); - r0 = sizeof(facilities) / sizeof(facilities[0]) - 1; - __asm__ volatile("stfle %[facilities]\n" : [facilities] "=Q" (facilities), [r0] "+r" (r0) :: "cc"); - return is_bit_set((const char *)facilities, DFLTCC_FACILITY); -} - -void ZLIB_INTERNAL dfltcc_reset(PREFIX3(streamp) strm, uInt size) -{ - struct dfltcc_state *dfltcc_state = (struct dfltcc_state *)((char *)strm->state + size); - struct dfltcc_qaf_param *param = (struct dfltcc_qaf_param *)&dfltcc_state->param; - - /* Initialize available functions */ - if (is_dfltcc_enabled()) { - dfltcc(DFLTCC_QAF, param, NULL, NULL, NULL, NULL, NULL); - memmove(&dfltcc_state->af, param, sizeof(dfltcc_state->af)); - } else - memset(&dfltcc_state->af, 0, sizeof(dfltcc_state->af)); - - /* Initialize parameter block */ - memset(&dfltcc_state->param, 0, sizeof(dfltcc_state->param)); - dfltcc_state->param.nt = 1; - - /* Initialize tuning parameters */ - dfltcc_state->level_mask = DFLTCC_LEVEL_MASK; - dfltcc_state->block_size = DFLTCC_BLOCK_SIZE; - dfltcc_state->block_threshold = DFLTCC_FIRST_FHT_BLOCK_SIZE; - dfltcc_state->dht_threshold = DFLTCC_DHT_MIN_SAMPLE_SIZE; - dfltcc_state->param.ribm = DFLTCC_RIBM; -} - -void ZLIB_INTERNAL *dfltcc_alloc_state(PREFIX3(streamp) strm, uInt items, uInt size) -{ - Assert((items * size) % 8 == 0, - "The size of zlib-ng state must be a multiple of 8"); - return ZALLOC(strm, items * size + sizeof(struct dfltcc_state), sizeof(unsigned char)); -} - -void ZLIB_INTERNAL dfltcc_copy_state(void *dst, const void *src, uInt size) -{ - memcpy(dst, src, size + sizeof(struct dfltcc_state)); -} - -static const int PAGE_ALIGN = 0x1000; - -#define ALIGN_UP(p, size) (__typeof__(p))(((uintptr_t)(p) + ((size) - 1)) & ~((size) - 1)) - -void ZLIB_INTERNAL *dfltcc_alloc_window(PREFIX3(streamp) strm, uInt items, uInt size) -{ - void *p; - void *w; - - /* To simplify freeing, we store the pointer to the allocated buffer right - * before the window. - */ - p = ZALLOC(strm, sizeof(void *) + items * size + PAGE_ALIGN, sizeof(unsigned char)); - if (p == NULL) - return NULL; - w = ALIGN_UP((char *)p + sizeof(void *), PAGE_ALIGN); - *(void **)((char *)w - sizeof(void *)) = p; - return w; -} - -void ZLIB_INTERNAL dfltcc_free_window(PREFIX3(streamp) strm, void *w) -{ - if (w) - ZFREE(strm, *(void **)((unsigned char *)w - sizeof(void *))); -} diff --git a/libs/zlibng/arch/s390/dfltcc_common.h b/libs/zlibng/arch/s390/dfltcc_common.h deleted file mode 100644 index e206e0431..000000000 --- a/libs/zlibng/arch/s390/dfltcc_common.h +++ /dev/null @@ -1,29 +0,0 @@ -#ifndef DFLTCC_COMMON_H -#define DFLTCC_COMMON_H - -#ifdef ZLIB_COMPAT -#include "zlib.h" -#else -#include "zlib-ng.h" -#endif -#include "zutil.h" - -void ZLIB_INTERNAL *dfltcc_alloc_state(PREFIX3(streamp) strm, uInt items, uInt size); -void ZLIB_INTERNAL dfltcc_copy_state(void *dst, const void *src, uInt size); -void ZLIB_INTERNAL dfltcc_reset(PREFIX3(streamp) strm, uInt size); -void ZLIB_INTERNAL *dfltcc_alloc_window(PREFIX3(streamp) strm, uInt items, uInt size); -void ZLIB_INTERNAL dfltcc_free_window(PREFIX3(streamp) strm, void *w); - -#define ZALLOC_STATE dfltcc_alloc_state - -#define ZFREE_STATE ZFREE - -#define ZCOPY_STATE dfltcc_copy_state - -#define ZALLOC_WINDOW dfltcc_alloc_window - -#define ZFREE_WINDOW dfltcc_free_window - -#define TRY_FREE_WINDOW dfltcc_free_window - -#endif diff --git a/libs/zlibng/arch/s390/dfltcc_deflate.c b/libs/zlibng/arch/s390/dfltcc_deflate.c deleted file mode 100644 index adab3e000..000000000 --- a/libs/zlibng/arch/s390/dfltcc_deflate.c +++ /dev/null @@ -1,365 +0,0 @@ -/* dfltcc_deflate.c - IBM Z DEFLATE CONVERSION CALL compression support. */ - -/* - Use the following commands to build zlib-ng with DFLTCC compression support: - - $ ./configure --with-dfltcc-deflate - or - - $ cmake -DWITH_DFLTCC_DEFLATE=1 . - - and then - - $ make -*/ - -#include "zbuild.h" -#include "zutil.h" -#include "deflate.h" -#include "dfltcc_deflate.h" -#include "dfltcc_detail.h" - -static inline int dfltcc_are_params_ok(int level, uInt window_bits, int strategy, uint16_t level_mask) -{ - return (level_mask & ((uint16_t)1 << level)) != 0 && - (window_bits == HB_BITS) && - (strategy == Z_FIXED || strategy == Z_DEFAULT_STRATEGY); -} - - -int ZLIB_INTERNAL dfltcc_can_deflate(PREFIX3(streamp) strm) -{ - deflate_state *state = (deflate_state *)strm->state; - struct dfltcc_state *dfltcc_state = GET_DFLTCC_STATE(state); - - /* Unsupported compression settings */ - if (!dfltcc_are_params_ok(state->level, state->w_bits, state->strategy, dfltcc_state->level_mask)) - return 0; - - /* Unsupported hardware */ - if (!is_bit_set(dfltcc_state->af.fns, DFLTCC_GDHT) || - !is_bit_set(dfltcc_state->af.fns, DFLTCC_CMPR) || - !is_bit_set(dfltcc_state->af.fmts, DFLTCC_FMT0)) - return 0; - - return 1; -} - -static inline void dfltcc_gdht(PREFIX3(streamp) strm) -{ - deflate_state *state = (deflate_state *)strm->state; - struct dfltcc_param_v0 *param = &GET_DFLTCC_STATE(state)->param; - size_t avail_in = strm->avail_in; - - dfltcc(DFLTCC_GDHT, param, NULL, NULL, &strm->next_in, &avail_in, NULL); -} - -static inline dfltcc_cc dfltcc_cmpr(PREFIX3(streamp) strm) -{ - deflate_state *state = (deflate_state *)strm->state; - struct dfltcc_param_v0 *param = &GET_DFLTCC_STATE(state)->param; - size_t avail_in = strm->avail_in; - size_t avail_out = strm->avail_out; - dfltcc_cc cc; - - cc = dfltcc(DFLTCC_CMPR | HBT_CIRCULAR, - param, &strm->next_out, &avail_out, - &strm->next_in, &avail_in, state->window); - strm->total_in += (strm->avail_in - avail_in); - strm->total_out += (strm->avail_out - avail_out); - strm->avail_in = avail_in; - strm->avail_out = avail_out; - return cc; -} - -static inline void send_eobs(PREFIX3(streamp) strm, const struct dfltcc_param_v0 *param) -{ - deflate_state *state = (deflate_state *)strm->state; - - send_bits(state, bi_reverse(param->eobs >> (15 - param->eobl), param->eobl), param->eobl); - flush_pending(strm); - if (state->pending != 0) { - /* The remaining data is located in pending_out[0:pending]. If someone - * calls put_byte() - this might happen in deflate() - the byte will be - * placed into pending_buf[pending], which is incorrect. Move the - * remaining data to the beginning of pending_buf so that put_byte() is - * usable again. - */ - memmove(state->pending_buf, state->pending_out, state->pending); - state->pending_out = state->pending_buf; - } -#ifdef ZLIB_DEBUG - state->compressed_len += param->eobl; -#endif -} - -int ZLIB_INTERNAL dfltcc_deflate(PREFIX3(streamp) strm, int flush, block_state *result) -{ - deflate_state *state = (deflate_state *)strm->state; - struct dfltcc_state *dfltcc_state = GET_DFLTCC_STATE(state); - struct dfltcc_param_v0 *param = &dfltcc_state->param; - uInt masked_avail_in; - dfltcc_cc cc; - int need_empty_block; - int soft_bcc; - int no_flush; - - if (!dfltcc_can_deflate(strm)) - return 0; - -again: - masked_avail_in = 0; - soft_bcc = 0; - no_flush = flush == Z_NO_FLUSH; - - /* Trailing empty block. Switch to software, except when Continuation Flag - * is set, which means that DFLTCC has buffered some output in the - * parameter block and needs to be called again in order to flush it. - */ - if (flush == Z_FINISH && strm->avail_in == 0 && !param->cf) { - if (param->bcf) { - /* A block is still open, and the hardware does not support closing - * blocks without adding data. Thus, close it manually. - */ - send_eobs(strm, param); - param->bcf = 0; - } - return 0; - } - - if (strm->avail_in == 0 && !param->cf) { - *result = need_more; - return 1; - } - - /* There is an open non-BFINAL block, we are not going to close it just - * yet, we have compressed more than DFLTCC_BLOCK_SIZE bytes and we see - * more than DFLTCC_DHT_MIN_SAMPLE_SIZE bytes. Open a new block with a new - * DHT in order to adapt to a possibly changed input data distribution. - */ - if (param->bcf && no_flush && - strm->total_in > dfltcc_state->block_threshold && - strm->avail_in >= dfltcc_state->dht_threshold) { - if (param->cf) { - /* We need to flush the DFLTCC buffer before writing the - * End-of-block Symbol. Mask the input data and proceed as usual. - */ - masked_avail_in += strm->avail_in; - strm->avail_in = 0; - no_flush = 0; - } else { - /* DFLTCC buffer is empty, so we can manually write the - * End-of-block Symbol right away. - */ - send_eobs(strm, param); - param->bcf = 0; - dfltcc_state->block_threshold = strm->total_in + dfltcc_state->block_size; - if (strm->avail_out == 0) { - *result = need_more; - return 1; - } - } - } - - /* The caller gave us too much data. Pass only one block worth of - * uncompressed data to DFLTCC and mask the rest, so that on the next - * iteration we start a new block. - */ - if (no_flush && strm->avail_in > dfltcc_state->block_size) { - masked_avail_in += (strm->avail_in - dfltcc_state->block_size); - strm->avail_in = dfltcc_state->block_size; - } - - /* When we have an open non-BFINAL deflate block and caller indicates that - * the stream is ending, we need to close an open deflate block and open a - * BFINAL one. - */ - need_empty_block = flush == Z_FINISH && param->bcf && !param->bhf; - - /* Translate stream to parameter block */ - param->cvt = state->wrap == 2 ? CVT_CRC32 : CVT_ADLER32; - if (!no_flush) - /* We need to close a block. Always do this in software - when there is - * no input data, the hardware will not nohor BCC. */ - soft_bcc = 1; - if (flush == Z_FINISH && !param->bcf) - /* We are about to open a BFINAL block, set Block Header Final bit - * until the stream ends. - */ - param->bhf = 1; - /* DFLTCC-CMPR will write to next_out, so make sure that buffers with - * higher precedence are empty. - */ - Assert(state->pending == 0, "There must be no pending bytes"); - Assert(state->bi_valid < 8, "There must be less than 8 pending bits"); - param->sbb = (unsigned int)state->bi_valid; - if (param->sbb > 0) - *strm->next_out = (unsigned char)state->bi_buf; - if (param->hl) - param->nt = 0; /* Honor history */ - param->cv = state->wrap == 2 ? ZSWAP32(strm->adler) : strm->adler; - - /* When opening a block, choose a Huffman-Table Type */ - if (!param->bcf) { - if (state->strategy == Z_FIXED || (strm->total_in == 0 && dfltcc_state->block_threshold > 0)) - param->htt = HTT_FIXED; - else { - param->htt = HTT_DYNAMIC; - dfltcc_gdht(strm); - } - } - - /* Deflate */ - do { - cc = dfltcc_cmpr(strm); - if (strm->avail_in < 4096 && masked_avail_in > 0) - /* We are about to call DFLTCC with a small input buffer, which is - * inefficient. Since there is masked data, there will be at least - * one more DFLTCC call, so skip the current one and make the next - * one handle more data. - */ - break; - } while (cc == DFLTCC_CC_AGAIN); - - /* Translate parameter block to stream */ - strm->msg = oesc_msg(dfltcc_state->msg, param->oesc); - state->bi_valid = param->sbb; - if (state->bi_valid == 0) - state->bi_buf = 0; /* Avoid accessing next_out */ - else - state->bi_buf = *strm->next_out & ((1 << state->bi_valid) - 1); - strm->adler = state->wrap == 2 ? ZSWAP32(param->cv) : param->cv; - - /* Unmask the input data */ - strm->avail_in += masked_avail_in; - masked_avail_in = 0; - - /* If we encounter an error, it means there is a bug in DFLTCC call */ - Assert(cc != DFLTCC_CC_OP2_CORRUPT || param->oesc == 0, "BUG"); - - /* Update Block-Continuation Flag. It will be used to check whether to call - * GDHT the next time. - */ - if (cc == DFLTCC_CC_OK) { - if (soft_bcc) { - send_eobs(strm, param); - param->bcf = 0; - dfltcc_state->block_threshold = strm->total_in + dfltcc_state->block_size; - } else - param->bcf = 1; - if (flush == Z_FINISH) { - if (need_empty_block) - /* Make the current deflate() call also close the stream */ - return 0; - else { - bi_windup(state); - *result = finish_done; - } - } else { - if (flush == Z_FULL_FLUSH) - param->hl = 0; /* Clear history */ - *result = flush == Z_NO_FLUSH ? need_more : block_done; - } - } else { - param->bcf = 1; - *result = need_more; - } - if (strm->avail_in != 0 && strm->avail_out != 0) - goto again; /* deflate() must use all input or all output */ - return 1; -} - -/* - Switching between hardware and software compression. - - DFLTCC does not support all zlib settings, e.g. generation of non-compressed - blocks or alternative window sizes. When such settings are applied on the - fly with deflateParams, we need to convert between hardware and software - window formats. -*/ -int ZLIB_INTERNAL dfltcc_deflate_params(PREFIX3(streamp) strm, int level, int strategy) -{ - deflate_state *state = (deflate_state *)strm->state; - struct dfltcc_state *dfltcc_state = GET_DFLTCC_STATE(state); - struct dfltcc_param_v0 *param = &dfltcc_state->param; - int could_deflate = dfltcc_can_deflate(strm); - int can_deflate = dfltcc_are_params_ok(level, state->w_bits, strategy, dfltcc_state->level_mask); - - if (can_deflate == could_deflate) - /* We continue to work in the same mode - no changes needed */ - return Z_OK; - - if (strm->total_in == 0 && param->nt == 1 && param->hl == 0) - /* DFLTCC was not used yet - no changes needed */ - return Z_OK; - - /* Switching between hardware and software is not implemented */ - return Z_STREAM_ERROR; -} - -/* - Preloading history. -*/ -static void append_history(struct dfltcc_param_v0 *param, unsigned char *history, const unsigned char *buf, uInt count) -{ - size_t offset; - size_t n; - - /* Do not use more than 32K */ - if (count > HB_SIZE) { - buf += count - HB_SIZE; - count = HB_SIZE; - } - offset = (param->ho + param->hl) % HB_SIZE; - if (offset + count <= HB_SIZE) - /* Circular history buffer does not wrap - copy one chunk */ - memcpy(history + offset, buf, count); - else { - /* Circular history buffer wraps - copy two chunks */ - n = HB_SIZE - offset; - memcpy(history + offset, buf, n); - memcpy(history, buf + n, count - n); - } - n = param->hl + count; - if (n <= HB_SIZE) - /* All history fits into buffer - no need to discard anything */ - param->hl = n; - else { - /* History does not fit into buffer - discard extra bytes */ - param->ho = (param->ho + (n - HB_SIZE)) % HB_SIZE; - param->hl = HB_SIZE; - } -} - -int ZLIB_INTERNAL dfltcc_deflate_set_dictionary(PREFIX3(streamp) strm, - const unsigned char *dictionary, uInt dict_length) -{ - deflate_state *state = (deflate_state *)strm->state; - struct dfltcc_state *dfltcc_state = GET_DFLTCC_STATE(state); - struct dfltcc_param_v0 *param = &dfltcc_state->param; - - append_history(param, state->window, dictionary, dict_length); - state->strstart = 1; /* Add FDICT to zlib header */ - return Z_OK; -} - -int ZLIB_INTERNAL dfltcc_deflate_get_dictionary(PREFIX3(streamp) strm, unsigned char *dictionary, uInt *dict_length) -{ - deflate_state *state = (deflate_state *)strm->state; - struct dfltcc_state *dfltcc_state = GET_DFLTCC_STATE(state); - struct dfltcc_param_v0 *param = &dfltcc_state->param; - - if (dictionary) { - if (param->ho + param->hl <= HB_SIZE) - /* Circular history buffer does not wrap - copy one chunk */ - memcpy(dictionary, state->window + param->ho, param->hl); - else { - /* Circular history buffer wraps - copy two chunks */ - memcpy(dictionary, state->window + param->ho, HB_SIZE - param->ho); - memcpy(dictionary + HB_SIZE - param->ho, state->window, param->ho + param->hl - HB_SIZE); - } - } - if (dict_length) - *dict_length = param->hl; - return Z_OK; -} diff --git a/libs/zlibng/arch/s390/dfltcc_deflate.h b/libs/zlibng/arch/s390/dfltcc_deflate.h deleted file mode 100644 index 93945f0a0..000000000 --- a/libs/zlibng/arch/s390/dfltcc_deflate.h +++ /dev/null @@ -1,50 +0,0 @@ -#ifndef DFLTCC_DEFLATE_H -#define DFLTCC_DEFLATE_H - -#include "dfltcc_common.h" - -int ZLIB_INTERNAL dfltcc_can_deflate(PREFIX3(streamp) strm); -int ZLIB_INTERNAL dfltcc_deflate(PREFIX3(streamp) strm, int flush, block_state *result); -int ZLIB_INTERNAL dfltcc_deflate_params(PREFIX3(streamp) strm, int level, int strategy); -int ZLIB_INTERNAL dfltcc_deflate_set_dictionary(PREFIX3(streamp) strm, - const unsigned char *dictionary, uInt dict_length); -int ZLIB_INTERNAL dfltcc_deflate_get_dictionary(PREFIX3(streamp) strm, unsigned char *dictionary, uInt* dict_length); - -#define DEFLATE_SET_DICTIONARY_HOOK(strm, dict, dict_len) \ - do { \ - if (dfltcc_can_deflate((strm))) \ - return dfltcc_deflate_set_dictionary((strm), (dict), (dict_len)); \ - } while (0) - -#define DEFLATE_GET_DICTIONARY_HOOK(strm, dict, dict_len) \ - do { \ - if (dfltcc_can_deflate((strm))) \ - return dfltcc_deflate_get_dictionary((strm), (dict), (dict_len)); \ - } while (0) - -#define DEFLATE_RESET_KEEP_HOOK(strm) \ - dfltcc_reset((strm), sizeof(deflate_state)) - -#define DEFLATE_PARAMS_HOOK(strm, level, strategy) \ - do { \ - int err; \ -\ - err = dfltcc_deflate_params((strm), (level), (strategy)); \ - if (err == Z_STREAM_ERROR) \ - return err; \ - } while (0) - -#define DEFLATE_BOUND_ADJUST_COMPLEN(strm, complen, source_len) \ - do { \ - if (dfltcc_can_deflate((strm))) \ - (complen) = (3 + 5 + 5 + 4 + 19 * 3 + (286 + 30) * 7 + \ - (source_len) * 16 + 15 + 7) >> 3; \ - } while (0) - -#define DEFLATE_NEED_CONSERVATIVE_BOUND(strm) (dfltcc_can_deflate((strm))) - -#define DEFLATE_HOOK dfltcc_deflate - -#define DEFLATE_NEED_CHECKSUM(strm) (!dfltcc_can_deflate((strm))) - -#endif diff --git a/libs/zlibng/arch/s390/dfltcc_detail.h b/libs/zlibng/arch/s390/dfltcc_detail.h deleted file mode 100644 index 156b2a289..000000000 --- a/libs/zlibng/arch/s390/dfltcc_detail.h +++ /dev/null @@ -1,201 +0,0 @@ -#include -#include -#include - -#ifdef HAVE_SYS_SDT_H -#include -#endif - -/* - Tuning parameters. - */ -#ifndef DFLTCC_LEVEL_MASK -#define DFLTCC_LEVEL_MASK 0x2 -#endif -#ifndef DFLTCC_BLOCK_SIZE -#define DFLTCC_BLOCK_SIZE 1048576 -#endif -#ifndef DFLTCC_FIRST_FHT_BLOCK_SIZE -#define DFLTCC_FIRST_FHT_BLOCK_SIZE 4096 -#endif -#ifndef DFLTCC_DHT_MIN_SAMPLE_SIZE -#define DFLTCC_DHT_MIN_SAMPLE_SIZE 4096 -#endif -#ifndef DFLTCC_RIBM -#define DFLTCC_RIBM 0 -#endif - -/* - C wrapper for the DEFLATE CONVERSION CALL instruction. - */ -typedef enum { - DFLTCC_CC_OK = 0, - DFLTCC_CC_OP1_TOO_SHORT = 1, - DFLTCC_CC_OP2_TOO_SHORT = 2, - DFLTCC_CC_OP2_CORRUPT = 2, - DFLTCC_CC_AGAIN = 3, -} dfltcc_cc; - -#define DFLTCC_QAF 0 -#define DFLTCC_GDHT 1 -#define DFLTCC_CMPR 2 -#define DFLTCC_XPND 4 -#define HBT_CIRCULAR (1 << 7) -#define HB_BITS 15 -#define HB_SIZE (1 << HB_BITS) -#define DFLTCC_FACILITY 151 - -static inline dfltcc_cc dfltcc(int fn, void *param, - unsigned char **op1, size_t *len1, const unsigned char **op2, size_t *len2, void *hist) -{ - unsigned char *t2 = op1 ? *op1 : NULL; - size_t t3 = len1 ? *len1 : 0; - const unsigned char *t4 = op2 ? *op2 : NULL; - size_t t5 = len2 ? *len2 : 0; - register int r0 __asm__("r0") = fn; - register void *r1 __asm__("r1") = param; - register unsigned char *r2 __asm__("r2") = t2; - register size_t r3 __asm__("r3") = t3; - register const unsigned char *r4 __asm__("r4") = t4; - register size_t r5 __asm__("r5") = t5; - int cc; - - __asm__ volatile( -#ifdef HAVE_SYS_SDT_H - STAP_PROBE_ASM(zlib, dfltcc_entry, STAP_PROBE_ASM_TEMPLATE(5)) -#endif - ".insn rrf,0xb9390000,%[r2],%[r4],%[hist],0\n" -#ifdef HAVE_SYS_SDT_H - STAP_PROBE_ASM(zlib, dfltcc_exit, STAP_PROBE_ASM_TEMPLATE(5)) -#endif - "ipm %[cc]\n" - : [r2] "+r" (r2) - , [r3] "+r" (r3) - , [r4] "+r" (r4) - , [r5] "+r" (r5) - , [cc] "=r" (cc) - : [r0] "r" (r0) - , [r1] "r" (r1) - , [hist] "r" (hist) -#ifdef HAVE_SYS_SDT_H - , STAP_PROBE_ASM_OPERANDS(5, r2, r3, r4, r5, hist) -#endif - : "cc", "memory"); - t2 = r2; t3 = r3; t4 = r4; t5 = r5; - - if (op1) - *op1 = t2; - if (len1) - *len1 = t3; - if (op2) - *op2 = t4; - if (len2) - *len2 = t5; - return (cc >> 28) & 3; -} - -/* - Parameter Block for Query Available Functions. - */ -#define static_assert(c, msg) __attribute__((unused)) static char static_assert_failed_ ## msg[c ? 1 : -1] - -struct dfltcc_qaf_param { - char fns[16]; - char reserved1[8]; - char fmts[2]; - char reserved2[6]; -}; - -static_assert(sizeof(struct dfltcc_qaf_param) == 32, sizeof_struct_dfltcc_qaf_param_is_32); - -static inline int is_bit_set(const char *bits, int n) -{ - return bits[n / 8] & (1 << (7 - (n % 8))); -} - -static inline void clear_bit(char *bits, int n) -{ - bits[n / 8] &= ~(1 << (7 - (n % 8))); -} - -#define DFLTCC_FMT0 0 - -/* - Parameter Block for Generate Dynamic-Huffman Table, Compress and Expand. - */ -#define CVT_CRC32 0 -#define CVT_ADLER32 1 -#define HTT_FIXED 0 -#define HTT_DYNAMIC 1 - -struct dfltcc_param_v0 { - uint16_t pbvn; /* Parameter-Block-Version Number */ - uint8_t mvn; /* Model-Version Number */ - uint8_t ribm; /* Reserved for IBM use */ - uint32_t reserved32 : 31; - uint32_t cf : 1; /* Continuation Flag */ - uint8_t reserved64[8]; - uint32_t nt : 1; /* New Task */ - uint32_t reserved129 : 1; - uint32_t cvt : 1; /* Check Value Type */ - uint32_t reserved131 : 1; - uint32_t htt : 1; /* Huffman-Table Type */ - uint32_t bcf : 1; /* Block-Continuation Flag */ - uint32_t bcc : 1; /* Block Closing Control */ - uint32_t bhf : 1; /* Block Header Final */ - uint32_t reserved136 : 1; - uint32_t reserved137 : 1; - uint32_t dhtgc : 1; /* DHT Generation Control */ - uint32_t reserved139 : 5; - uint32_t reserved144 : 5; - uint32_t sbb : 3; /* Sub-Byte Boundary */ - uint8_t oesc; /* Operation-Ending-Supplemental Code */ - uint32_t reserved160 : 12; - uint32_t ifs : 4; /* Incomplete-Function Status */ - uint16_t ifl; /* Incomplete-Function Length */ - uint8_t reserved192[8]; - uint8_t reserved256[8]; - uint8_t reserved320[4]; - uint16_t hl; /* History Length */ - uint32_t reserved368 : 1; - uint16_t ho : 15; /* History Offset */ - uint32_t cv; /* Check Value */ - uint32_t eobs : 15; /* End-of-block Symbol */ - uint32_t reserved431: 1; - uint8_t eobl : 4; /* End-of-block Length */ - uint32_t reserved436 : 12; - uint32_t reserved448 : 4; - uint16_t cdhtl : 12; /* Compressed-Dynamic-Huffman Table - Length */ - uint8_t reserved464[6]; - uint8_t cdht[288]; - uint8_t reserved[32]; - uint8_t csb[1152]; -}; - -static_assert(sizeof(struct dfltcc_param_v0) == 1536, sizeof_struct_dfltcc_param_v0_is_1536); - -static inline const char *oesc_msg(char *buf, int oesc) -{ - if (oesc == 0x00) - return NULL; /* Successful completion */ - else { - sprintf(buf, "Operation-Ending-Supplemental Code is 0x%.2X", oesc); - return buf; - } -} - -/* - Extension of inflate_state and deflate_state. Must be doubleword-aligned. -*/ -struct dfltcc_state { - struct dfltcc_param_v0 param; /* Parameter block. */ - struct dfltcc_qaf_param af; /* Available functions. */ - uint16_t level_mask; /* Levels on which to use DFLTCC */ - uint32_t block_size; /* New block each X bytes */ - size_t block_threshold; /* New block after total_in > X */ - uint32_t dht_threshold; /* New block only if avail_in >= X */ - char msg[64]; /* Buffer for strm->msg */ -}; - -#define GET_DFLTCC_STATE(state) ((struct dfltcc_state *)((state) + 1)) diff --git a/libs/zlibng/arch/s390/dfltcc_inflate.c b/libs/zlibng/arch/s390/dfltcc_inflate.c deleted file mode 100644 index cec25f41f..000000000 --- a/libs/zlibng/arch/s390/dfltcc_inflate.c +++ /dev/null @@ -1,142 +0,0 @@ -/* dfltcc_inflate.c - IBM Z DEFLATE CONVERSION CALL decompression support. */ - -/* - Use the following commands to build zlib-ng with DFLTCC decompression support: - - $ ./configure --with-dfltcc-inflate - or - - $ cmake -DWITH_DFLTCC_INFLATE=1 . - - and then - - $ make -*/ - -#include "zbuild.h" -#include "zutil.h" -#include "inftrees.h" -#include "inflate.h" -#include "dfltcc_inflate.h" -#include "dfltcc_detail.h" - -int ZLIB_INTERNAL dfltcc_can_inflate(PREFIX3(streamp) strm) -{ - struct inflate_state *state = (struct inflate_state *)strm->state; - struct dfltcc_state *dfltcc_state = GET_DFLTCC_STATE(state); - - /* Unsupported compression settings */ - if (state->wbits != HB_BITS) - return 0; - - /* Unsupported hardware */ - return is_bit_set(dfltcc_state->af.fns, DFLTCC_XPND) && is_bit_set(dfltcc_state->af.fmts, DFLTCC_FMT0); -} - -static inline dfltcc_cc dfltcc_xpnd(PREFIX3(streamp) strm) -{ - struct inflate_state *state = (struct inflate_state *)strm->state; - struct dfltcc_param_v0 *param = &GET_DFLTCC_STATE(state)->param; - size_t avail_in = strm->avail_in; - size_t avail_out = strm->avail_out; - dfltcc_cc cc; - - cc = dfltcc(DFLTCC_XPND | HBT_CIRCULAR, - param, &strm->next_out, &avail_out, - &strm->next_in, &avail_in, state->window); - strm->avail_in = avail_in; - strm->avail_out = avail_out; - return cc; -} - -dfltcc_inflate_action ZLIB_INTERNAL dfltcc_inflate(PREFIX3(streamp) strm, int flush, int *ret) -{ - struct inflate_state *state = (struct inflate_state *)strm->state; - struct dfltcc_state *dfltcc_state = GET_DFLTCC_STATE(state); - struct dfltcc_param_v0 *param = &dfltcc_state->param; - dfltcc_cc cc; - - if (flush == Z_BLOCK || flush == Z_TREES) { - /* DFLTCC does not support stopping on block boundaries */ - if (dfltcc_inflate_disable(strm)) { - *ret = Z_STREAM_ERROR; - return DFLTCC_INFLATE_BREAK; - } else - return DFLTCC_INFLATE_SOFTWARE; - } - - if (state->last) { - if (state->bits != 0) { - strm->next_in++; - strm->avail_in--; - state->bits = 0; - } - state->mode = CHECK; - return DFLTCC_INFLATE_CONTINUE; - } - - if (strm->avail_in == 0 && !param->cf) - return DFLTCC_INFLATE_BREAK; - - if (inflate_ensure_window(state)) { - state->mode = MEM; - return DFLTCC_INFLATE_CONTINUE; - } - - /* Translate stream to parameter block */ - param->cvt = state->flags ? CVT_CRC32 : CVT_ADLER32; - param->sbb = state->bits; - param->hl = state->whave; /* Software and hardware history formats match */ - param->ho = (state->wnext - state->whave) & ((1 << HB_BITS) - 1); - if (param->hl) - param->nt = 0; /* Honor history for the first block */ - param->cv = state->flags ? ZSWAP32(state->check) : state->check; - - /* Inflate */ - do { - cc = dfltcc_xpnd(strm); - } while (cc == DFLTCC_CC_AGAIN); - - /* Translate parameter block to stream */ - strm->msg = oesc_msg(dfltcc_state->msg, param->oesc); - state->last = cc == DFLTCC_CC_OK; - state->bits = param->sbb; - state->whave = param->hl; - state->wnext = (param->ho + param->hl) & ((1 << HB_BITS) - 1); - state->check = state->flags ? ZSWAP32(param->cv) : param->cv; - if (cc == DFLTCC_CC_OP2_CORRUPT && param->oesc != 0) { - /* Report an error if stream is corrupted */ - state->mode = BAD; - return DFLTCC_INFLATE_CONTINUE; - } - state->mode = TYPEDO; - /* Break if operands are exhausted, otherwise continue looping */ - return (cc == DFLTCC_CC_OP1_TOO_SHORT || cc == DFLTCC_CC_OP2_TOO_SHORT) ? - DFLTCC_INFLATE_BREAK : DFLTCC_INFLATE_CONTINUE; -} - -int ZLIB_INTERNAL dfltcc_was_inflate_used(PREFIX3(streamp) strm) -{ - struct inflate_state *state = (struct inflate_state *)strm->state; - struct dfltcc_param_v0 *param = &GET_DFLTCC_STATE(state)->param; - - return !param->nt; -} - -int ZLIB_INTERNAL dfltcc_inflate_disable(PREFIX3(streamp) strm) -{ - struct inflate_state *state = (struct inflate_state *)strm->state; - struct dfltcc_state *dfltcc_state = GET_DFLTCC_STATE(state); - - if (!dfltcc_can_inflate(strm)) - return 0; - if (dfltcc_was_inflate_used(strm)) - /* DFLTCC has already decompressed some data. Since there is not - * enough information to resume decompression in software, the call - * must fail. - */ - return 1; - /* DFLTCC was not used yet - decompress in software */ - memset(&dfltcc_state->af, 0, sizeof(dfltcc_state->af)); - return 0; -} diff --git a/libs/zlibng/arch/s390/dfltcc_inflate.h b/libs/zlibng/arch/s390/dfltcc_inflate.h deleted file mode 100644 index aea2bbb73..000000000 --- a/libs/zlibng/arch/s390/dfltcc_inflate.h +++ /dev/null @@ -1,44 +0,0 @@ -#ifndef DFLTCC_INFLATE_H -#define DFLTCC_INFLATE_H - -#include "dfltcc_common.h" - -int ZLIB_INTERNAL dfltcc_can_inflate(PREFIX3(streamp) strm); -typedef enum { - DFLTCC_INFLATE_CONTINUE, - DFLTCC_INFLATE_BREAK, - DFLTCC_INFLATE_SOFTWARE, -} dfltcc_inflate_action; -dfltcc_inflate_action ZLIB_INTERNAL dfltcc_inflate(PREFIX3(streamp) strm, int flush, int *ret); -int ZLIB_INTERNAL dfltcc_was_inflate_used(PREFIX3(streamp) strm); -int ZLIB_INTERNAL dfltcc_inflate_disable(PREFIX3(streamp) strm); - -#define INFLATE_RESET_KEEP_HOOK(strm) \ - dfltcc_reset((strm), sizeof(struct inflate_state)) - -#define INFLATE_PRIME_HOOK(strm, bits, value) \ - do { if (dfltcc_inflate_disable((strm))) return Z_STREAM_ERROR; } while (0) - -#define INFLATE_TYPEDO_HOOK(strm, flush) \ - if (dfltcc_can_inflate((strm))) { \ - dfltcc_inflate_action action; \ -\ - RESTORE(); \ - action = dfltcc_inflate((strm), (flush), &ret); \ - LOAD(); \ - if (action == DFLTCC_INFLATE_CONTINUE) \ - break; \ - else if (action == DFLTCC_INFLATE_BREAK) \ - goto inf_leave; \ - } - -#define INFLATE_NEED_CHECKSUM(strm) (!dfltcc_can_inflate((strm))) - -#define INFLATE_NEED_UPDATEWINDOW(strm) (!dfltcc_can_inflate((strm))) - -#define INFLATE_MARK_HOOK(strm) \ - do { \ - if (dfltcc_was_inflate_used((strm))) return -(1L << 16); \ - } while (0) - -#endif diff --git a/libs/zlibng/compress.c b/libs/zlibng/compress.c deleted file mode 100644 index 6b493fda5..000000000 --- a/libs/zlibng/compress.c +++ /dev/null @@ -1,79 +0,0 @@ -/* compress.c -- compress a memory buffer - * Copyright (C) 1995-2005, 2014, 2016 Jean-loup Gailly, Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* @(#) $Id$ */ - -#define ZLIB_INTERNAL -#include "zbuild.h" -#if defined(ZLIB_COMPAT) -# include "zlib.h" -#else -# include "zlib-ng.h" -#endif - -/* =========================================================================== - Compresses the source buffer into the destination buffer. The level - parameter has the same meaning as in deflateInit. sourceLen is the byte - length of the source buffer. Upon entry, destLen is the total size of the - destination buffer, which must be at least 0.1% larger than sourceLen plus - 12 bytes. Upon exit, destLen is the actual size of the compressed buffer. - - compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough - memory, Z_BUF_ERROR if there was not enough room in the output buffer, - Z_STREAM_ERROR if the level parameter is invalid. -*/ -int ZEXPORT PREFIX(compress2)(unsigned char *dest, z_size_t *destLen, const unsigned char *source, - z_size_t sourceLen, int level) { - PREFIX3(stream) stream; - int err; - const unsigned int max = (unsigned int)-1; - z_size_t left; - - left = *destLen; - *destLen = 0; - - stream.zalloc = NULL; - stream.zfree = NULL; - stream.opaque = NULL; - - err = PREFIX(deflateInit)(&stream, level); - if (err != Z_OK) - return err; - - stream.next_out = dest; - stream.avail_out = 0; - stream.next_in = (const unsigned char *)source; - stream.avail_in = 0; - - do { - if (stream.avail_out == 0) { - stream.avail_out = left > (unsigned long)max ? max : (unsigned int)left; - left -= stream.avail_out; - } - if (stream.avail_in == 0) { - stream.avail_in = sourceLen > (unsigned long)max ? max : (unsigned int)sourceLen; - sourceLen -= stream.avail_in; - } - err = PREFIX(deflate)(&stream, sourceLen ? Z_NO_FLUSH : Z_FINISH); - } while (err == Z_OK); - - *destLen = (z_size_t)stream.total_out; - PREFIX(deflateEnd)(&stream); - return err == Z_STREAM_END ? Z_OK : err; -} - -/* =========================================================================== - */ -int ZEXPORT PREFIX(compress)(unsigned char *dest, z_size_t *destLen, const unsigned char *source, z_size_t sourceLen) { - return PREFIX(compress2)(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION); -} - -/* =========================================================================== - If the default memLevel or windowBits for deflateInit() is changed, then - this function needs to be updated. - */ -z_size_t ZEXPORT PREFIX(compressBound)(z_size_t sourceLen) { - return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) + (sourceLen >> 25) + 13; -} diff --git a/libs/zlibng/configure b/libs/zlibng/configure deleted file mode 100644 index 5f50a33cb..000000000 --- a/libs/zlibng/configure +++ /dev/null @@ -1,1503 +0,0 @@ -#!/usr/bin/env bash -# configure script for zlib. -# -# Normally configure builds both a static and a shared library. -# If you want to build just a static library, use: ./configure --static -# -# To impose specific compiler or flags or install directory, use for example: -# prefix=$HOME CC=cc CFLAGS="-O4" ./configure -# or for csh/tcsh users: -# (setenv prefix $HOME; setenv CC cc; setenv CFLAGS "-O4"; ./configure) - -# Incorrect settings of CC or CFLAGS may prevent creating a shared library. -# If you have problems, try without defining CC and CFLAGS before reporting -# an error. - -# start off configure.log -echo -------------------- >> configure.log -echo $0 $* >> configure.log -date >> configure.log - -SRCDIR=$(cd $(dirname $0); pwd) -BUILDDIR=$(pwd) - -# set command prefix for cross-compilation -if [ -n "${CHOST}" ]; then - uname="`echo "${CHOST}" | sed -e 's/^[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)-.*$/\1/'`" - CROSS_PREFIX="${CHOST}-" - ARCH="`echo "${CHOST}" | sed -e 's/-.*//'`" -else - ARCH="`uname -m`" -fi - -case "${ARCH}" in - x86_64) - case "${CFLAGS}" in - *-m32*) - ARCH=i686 - ;; - esac - ;; - i386 | i486 | i586 | i686) - case "${CFLAGS}" in - *-m64*) - ARCH=x86_64 - ;; - esac - ;; -esac - -# destination name for windows import library -IMPORTLIB= - -# establish commands for library building -if "${CROSS_PREFIX}ar" --version >/dev/null 2>/dev/null || test $? -lt 126; then - AR=${AR-"${CROSS_PREFIX}ar"} - test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log -else - AR=${AR-"ar"} - test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log -fi -ARFLAGS=${ARFLAGS-"rc"} -if "${CROSS_PREFIX}ranlib" --version >/dev/null 2>/dev/null || test $? -lt 126; then - RANLIB=${RANLIB-"${CROSS_PREFIX}ranlib"} - test -n "${CROSS_PREFIX}" && echo Using ${RANLIB} | tee -a configure.log -else - RANLIB=${RANLIB-"ranlib"} -fi - -# set defaults before processing command line options -LDCONFIG=${LDCONFIG-"ldconfig"} -LDFLAGS=${LDFLAGS-"-L."} -LDSHAREDLIBC="${LDSHAREDLIBC--lc}" -DEFFILE= -RC= -RCFLAGS= -RCOBJS= -STRIP= -ARCHS= -prefix=${prefix-/usr/local} -exec_prefix=${exec_prefix-'${prefix}'} -bindir=${bindir-'${exec_prefix}/bin'} -libdir=${libdir-'${exec_prefix}/lib'} -sharedlibdir=${sharedlibdir-'${libdir}'} -includedir=${includedir-'${prefix}/include'} -mandir=${mandir-'${prefix}/share/man'} -shared_ext='.so' -shared=1 -gzfileops=0 -compat=0 -cover=0 -build32=0 -build64=0 -buildacle=1 -buildneon=1 -builddfltccdeflate=0 -builddfltccinflate=0 -with_sanitizers=0 -with_msan=0 -with_fuzzers=0 -floatabi= -native=0 -forcesse2=0 -sse2flag="-msse2" -sse4flag="-msse4" -sse42flag="-msse4.2" -pclmulflag="-mpclmul" -without_optimizations=0 -without_new_strategies=0 -gcc=0 -warn=0 -debug=0 -old_cc="$CC" -old_cflags="$CFLAGS" -OBJC='$(OBJZ)' -PIC_OBJC='$(PIC_OBJZ)' -INSTALLTARGETS="install-shared install-static" -UNINSTALLTARGETS="uninstall-shared uninstall-static" - -TEST="teststatic" - -# leave this script, optionally in a bad way -leave() -{ - if test "$*" != "0"; then - echo "** $0 aborting." | tee -a configure.log - fi - rm -f $test.[co] $test $test$shared_ext $test.gcno ./--version - echo -------------------- >> configure.log - echo >> configure.log - echo >> configure.log - exit $1 -} - -# process command line options -while test $# -ge 1 -do -case "$1" in - -h* | --help) - echo 'usage:' | tee -a configure.log - echo ' configure [--prefix=PREFIX] [--eprefix=EXPREFIX]' | tee -a configure.log - echo ' [--static] [--32] [--64] [--libdir=LIBDIR] [--sharedlibdir=LIBDIR]' | tee -a configure.log - echo ' [--includedir=INCLUDEDIR] [--archs="-arch i386 -arch x86_64"]' | tee -a configure.log - echo ' [--warn] Enables extra compiler warnings' | tee -a configure.log - echo ' [--debug] Enables extra debug prints during operation' | tee -a configure.log - echo ' [--zlib-compat] Compiles for zlib-compatible API instead of zlib-ng API' | tee -a configure.log - echo ' [--with-gzfileops] Compiles with the gzfile parts of the API enabled' | tee -a configure.log - echo ' [--without-optimizations] Compiles without support for optional instruction sets' | tee -a configure.log - echo ' [--without-new-strategies] Compiles without using new additional deflate strategies' | tee -a configure.log - echo ' [--without-acle] Compiles without ARM C Language Extensions' | tee -a configure.log - echo ' [--without-neon] Compiles without ARM Neon SIMD instruction set' | tee -a configure.log - echo ' [--with-dfltcc-deflate] Use DEFLATE CONVERSION CALL instruction for compression on IBM Z' | tee -a configure.log - echo ' [--with-dfltcc-inflate] Use DEFLATE CONVERSION CALL instruction for decompression on IBM Z' | tee -a configure.log - echo ' [--force-sse2] Assume SSE2 instructions are always available (disabled by default on x86, enabled on x86_64)' | tee -a configure.log - echo ' [--with-sanitizers] Build with address sanitizer and all supported sanitizers other than memory sanitizer (disabled by default)' | tee -a configure.log - echo ' [--with-msan] Build with memory sanitizer (disabled by default)' | tee -a configure.log - echo ' [--with-fuzzers] Build test/fuzz (disabled by default)' | tee -a configure.log - exit 0 ;; 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" | tee -a configure.log - cat > $test.c < -#define COMPILE_TIME_ASSERT(pred) struct s { int x: (pred) ? 1 : -1; } -COMPILE_TIME_ASSERT(sizeof(int32_t) == sizeof(void *)); -EOF - if try $CC -c $CFLAGS $test.c; then - echo "sizeof(int32_t)." | tee -a configure.log - sed < zconf${SUFFIX}.h "s/^typedef PTRDIFF_TYPE ptrdiff_t;/typedef int32_t ptrdiff_t;/g" > zconf${SUFFIX}.temp.h - mv zconf${SUFFIX}.temp.h zconf${SUFFIX}.h - else - cat > $test.c < -#define COMPILE_TIME_ASSERT(pred) struct s { int x: (pred) ? 1 : -1; } -COMPILE_TIME_ASSERT(sizeof(int64_t) == sizeof(void *)); -EOF - if try $CC -c $CFLAGS $test.c; then - echo "sizeof(int64_t)." | tee -a configure.log - sed < zconf${SUFFIX}.h "s/^typedef PTRDIFF_TYPE ptrdiff_t;/typedef int64_t ptrdiff_t;/g" > zconf${SUFFIX}.temp.h - mv zconf${SUFFIX}.temp.h zconf${SUFFIX}.h - else - echo "unknown." | tee -a configure.log - exit 1 - fi - fi -fi - -# if --zlib-compat was requested -if test $compat -eq 1; then - gzfileops=1 - CFLAGS="${CFLAGS} -DZLIB_COMPAT" - SFLAGS="${SFLAGS} -DZLIB_COMPAT" - case "$uname" in - CYGWIN* | Cygwin* | cygwin* | MSYS* | msys* | MINGW* | mingw*) - DEFFILE="win32/zlibcompat.def" ;; - esac -fi - -# if --gzfileops was requested -if test $gzfileops -eq 1; then - CFLAGS="${CFLAGS} -DWITH_GZFILEOP" - SFLAGS="${SFLAGS} -DWITH_GZFILEOP" - OBJC="${OBJC} \$(OBJG)" - PIC_OBJC="${PIC_OBJC} \$(PIC_OBJG)" -fi - -# if code coverage testing was requested, use older gcc if defined, e.g. "gcc-4.2" on Mac OS X -if test $cover -eq 1; then - CFLAGS="${CFLAGS} -fprofile-arcs -ftest-coverage" - LDFLAGS="${LDFLAGS} -fprofile-arcs -ftest-coverage" - if test -n "$GCC_CLASSIC"; then - CC=$GCC_CLASSIC - fi -fi - -echo >> configure.log - -# Check for ANSI C compliant compiler -cat > $test.c < -#include -#include "zconf${SUFFIX}.h" -int main() { -#ifdef STDC - return 0; -#endif - return 1; -} -EOF -if try $CC -c $CFLAGS $test.c; then - echo "Checking for ANSI C compliant compiler... Yes." | tee -a configure.log - : -else - echo "Checking for ANSI C compliant compiler... No." | tee -a configure.log - echo "Error: ANSI C compatible compiler needed, cannot continue." | tee -a configure.log - leave 1 -fi - -# see if we can hide zlib internal symbols that are linked between separate source files using hidden -if test "$gcc" -eq 1; then - echo >> configure.log - cat > $test.c <> configure.log - echo "Checking for attribute(visibility(hidden)) support... Yes." | tee -a configure.log - else - echo >> configure.log - echo "Checking for attribute(visibility(hidden)) support... No." | tee -a configure.log - fi -fi - -# see if we can hide zlib internal symbols that are linked between separate source files using internal -if test "$gcc" -eq 1; then - echo >> configure.log - cat > $test.c <> configure.log - echo "Checking for attribute(visibility(internal)) support... Yes." | tee -a configure.log - else - echo >> configure.log - echo "Checking for attribute(visibility(internal)) support... No." | tee -a configure.log - fi -fi - -# Check for __builtin_ctzl() support in compiler -cat > $test.c << EOF -int main(void) { - unsigned int zero = 0; - long test = __builtin_ctzl(zero); - (void)test; - return 0; -} -EOF -if try ${CC} ${CFLAGS} $test.c $LDSHAREDLIBC; then - echo "Checking for __builtin_ctzl ... Yes." | tee -a configure.log - CFLAGS="$CFLAGS -DHAVE_BUILTIN_CTZL" - SFLAGS="$SFLAGS -DHAVE_BUILTIN_CTZL" -else - echo "Checking for __builtin_ctzl ... No." | tee -a configure.log -fi - -# Check for SSE2 intrinsics -case "${ARCH}" in - i386 | i486 | i586 | i686) - cat > $test.c << EOF -#include -int main(void) { - __m128i zero = _mm_setzero_si128(); - (void)zero; - return 0; -} -EOF - if try ${CC} ${CFLAGS} ${sse2flag} $test.c; then - echo "Checking for SSE2 intrinsics ... Yes." | tee -a configure.log - HAVE_SSE2_INTRIN=1 - else - echo "Checking for SSE2 intrinsics ... No." | tee -a configure.log - HAVE_SSE2_INTRIN=0 - fi - ;; -esac - -# Check for SSE4.2 CRC intrinsics -case "${ARCH}" in - i386 | i486 | i586 | i686 | x86_64) - cat > $test.c << EOF -int main(void) { - unsigned crc = 0; - char c = 'c'; - crc = __builtin_ia32_crc32qi(crc, c); - (void)crc; - return 0; -} -EOF - if try ${CC} ${CFLAGS} ${sse42flag} $test.c; then - echo "Checking for SSE4.2 CRC intrinsics ... Yes." | tee -a configure.log - HAVE_SSE42CRC_INTRIN=1 - else - echo "Checking for SSE4.2 CRC intrinsics ... No." | tee -a configure.log - HAVE_SSE42CRC_INTRIN=0 - fi - ;; -esac - -# Check for PCLMULQDQ intrinsics -case "${ARCH}" in - i386 | i486 | i586 | i686 | x86_64) - cat > $test.c << EOF -#include -#include -int main(void) { - __m128i a = _mm_setzero_si128(); - __m128i b = _mm_setzero_si128(); - __m128i c = _mm_clmulepi64_si128(a, b, 0x10); - (void)c; - return 0; -} -EOF - if try ${CC} ${CFLAGS} ${pclmulflag} $test.c; then - echo "Checking for PCLMULQDQ intrinsics ... Yes." | tee -a configure.log - HAVE_PCLMULQDQ_INTRIN=1 - else - echo "Checking for PCLMULQDQ intrinsics ... No." | tee -a configure.log - HAVE_PCLMULQDQ_INTRIN=0 - fi - - # Enable deflate_medium at level 4-6 - if test $without_new_strategies -eq 1; then - CFLAGS="${CFLAGS} -DNO_MEDIUM_STRATEGY" - SFLAGS="${SFLAGS} -DNO_MEDIUM_STRATEGY" - fi - ;; -esac - -# Check whether -mfpu=neon is available on ARM processors. -case "${ARCH}" in - arm*) - cat > $test.c << EOF -int main() { return 0; } -EOF - if try $CC -c $CFLAGS -mfpu=neon $test.c; then - MFPU_NEON_AVAILABLE=1 - echo "Check whether -mfpu=neon is available ... Yes." | tee -a configure.log - else - MFPU_NEON_AVAILABLE=0 - echo "Check whether -mfpu=neon is available ... No." | tee -a configure.log - fi - ;; -esac - -# Check whether sys/sdt.h is available -cat > $test.c << EOF -#include -int main() { return 0; } -EOF -if try ${CC} ${CFLAGS} $test.c; then - echo "Checking for sys/sdt.h ... Yes." | tee -a configure.log - CFLAGS="$CFLAGS -DHAVE_SYS_SDT_H" - SFLAGS="$SFLAGS -DHAVE_SYS_SDT_H" -else - echo "Checking for sys/sdt.h ... No." | tee -a configure.log -fi - -ARCHDIR='arch/generic' -ARCH_STATIC_OBJS='' -ARCH_SHARED_OBJS='' - -# Set ARCH specific FLAGS -case "${ARCH}" in - # x86 specific optimizations - i386 | i486 | i586 | i686) - ARCHDIR=arch/x86 - - CFLAGS="${CFLAGS} -DUNALIGNED_OK" - SFLAGS="${SFLAGS} -DUNALIGNED_OK" - - # Enable arch-specific optimizations? - if test $without_optimizations -eq 0; then - CFLAGS="${CFLAGS} -DX86_CPUID" - SFLAGS="${SFLAGS} -DX86_CPUID" - - ARCH_STATIC_OBJS="${ARCH_STATIC_OBJS} x86.o" - ARCH_SHARED_OBJS="${ARCH_SHARED_OBJS} x86.lo" - - if test ${HAVE_SSE2_INTRIN} -eq 1; then - CFLAGS="${CFLAGS} -DX86_SSE2" - SFLAGS="${SFLAGS} -DX86_SSE2" - ARCH_STATIC_OBJS="${ARCH_STATIC_OBJS} fill_window_sse.o" - ARCH_SHARED_OBJS="${ARCH_SHARED_OBJS} fill_window_sse.lo" - - if test $forcesse2 -eq 1; then - CFLAGS="${CFLAGS} -DX86_NOCHECK_SSE2" - SFLAGS="${SFLAGS} -DX86_NOCHECK_SSE2" - fi - - # Enable deflate_quick at level 1? - # requires SSE2: code uses fill_window_sse - if test $without_new_strategies -eq 0; then - CFLAGS="${CFLAGS} -DX86_QUICK_STRATEGY" - SFLAGS="${SFLAGS} -DX86_QUICK_STRATEGY" - - ARCH_STATIC_OBJS="${ARCH_STATIC_OBJS} deflate_quick.o" - ARCH_SHARED_OBJS="${ARCH_SHARED_OBJS} deflate_quick.lo" - fi - fi - - if test ${HAVE_SSE42CRC_INTRIN} -eq 1; then - CFLAGS="${CFLAGS} -DX86_SSE4_2_CRC_INTRIN" - SFLAGS="${SFLAGS} -DX86_SSE4_2_CRC_INTRIN" - fi - - CFLAGS="${CFLAGS} -DX86_SSE4_2_CRC_HASH" - SFLAGS="${SFLAGS} -DX86_SSE4_2_CRC_HASH" - ARCH_STATIC_OBJS="${ARCH_STATIC_OBJS} insert_string_sse.o" - ARCH_SHARED_OBJS="${ARCH_SHARED_OBJS} insert_string_sse.lo" - - if test ${HAVE_PCLMULQDQ_INTRIN} -eq 1; then - CFLAGS="${CFLAGS} -DX86_PCLMULQDQ_CRC" - SFLAGS="${SFLAGS} -DX86_PCLMULQDQ_CRC" - ARCH_STATIC_OBJS="${ARCH_STATIC_OBJS} crc_folding.o" - ARCH_SHARED_OBJS="${ARCH_SHARED_OBJS} crc_folding.lo" - fi - - fi - ;; - - # x86_64 specific optimizations - x86_64) - ARCHDIR=arch/x86 - - CFLAGS="${CFLAGS} -DUNALIGNED_OK" - SFLAGS="${SFLAGS} -DUNALIGNED_OK" - - # Enable arch-specific optimizations? - if test $without_optimizations -eq 0; then - CFLAGS="${CFLAGS} -DX86_CPUID -DX86_SSE2 -DX86_SSE4_2_CRC_HASH" - SFLAGS="${SFLAGS} -DX86_CPUID -DX86_SSE2 -DX86_SSE4_2_CRC_HASH" - - ARCH_STATIC_OBJS="${ARCH_STATIC_OBJS} x86.o fill_window_sse.o insert_string_sse.o" - ARCH_SHARED_OBJS="${ARCH_SHARED_OBJS} x86.lo fill_window_sse.lo insert_string_sse.lo" - - if test ${HAVE_SSE42CRC_INTRIN} -eq 1; then - CFLAGS="${CFLAGS} -DX86_SSE4_2_CRC_INTRIN" - SFLAGS="${SFLAGS} -DX86_SSE4_2_CRC_INTRIN" - fi - - if test ${HAVE_PCLMULQDQ_INTRIN} -eq 1; then - CFLAGS="${CFLAGS} -DX86_PCLMULQDQ_CRC" - SFLAGS="${SFLAGS} -DX86_PCLMULQDQ_CRC" - ARCH_STATIC_OBJS="${ARCH_STATIC_OBJS} crc_folding.o" - ARCH_SHARED_OBJS="${ARCH_SHARED_OBJS} crc_folding.lo" - fi - - # Enable deflate_quick at level 1? - if test $without_new_strategies -eq 0; then - CFLAGS="${CFLAGS} -DX86_QUICK_STRATEGY" - SFLAGS="${SFLAGS} -DX86_QUICK_STRATEGY" - - ARCH_STATIC_OBJS="${ARCH_STATIC_OBJS} deflate_quick.o" - ARCH_SHARED_OBJS="${ARCH_SHARED_OBJS} deflate_quick.lo" - fi - fi - ;; - - # ARM specific optimizations - arm | armv[3467]l | armv4b | armv4tl | armv5tel | armv5tejl | armv[67]hl | armv7hnl | armv[78]-a | armv8-a+* | armv8.[1234]-a | armv8.[1234]-a+*) - [ ! -z $CROSS_PREFIX ] && QEMU_ARCH=arm - ARCHDIR=arch/arm - ARCH_STATIC_OBJS="${ARCH_STATIC_OBJS} armfeature.o fill_window_arm.o" - ARCH_SHARED_OBJS="${ARCH_SHARED_OBJS} armfeature.lo fill_window_arm.lo" - - GCC_MACHINE=$(${CC} -dumpmachine) - case "${GCC_MACHINE}" in - *gnueabihf) - floatabi="-mfloat-abi=hard" ;; - *gnueabi) - floatabi="-mfloat-abi=softfp" ;; - esac - - case "${ARCH}" in - armv[345]*) - if test $buildacle -eq 1; then - echo ACLE support not available - fi - - if test $buildneon -eq 1; then - echo NEON support not available - fi - ;; - armv6l | armv6hl) - CFLAGS="${CFLAGS} -DUNALIGNED_OK" - SFLAGS="${SFLAGS} -DUNALIGNED_OK" - - if test $buildacle -eq 1; then - echo ACLE support not available - fi - - if test $buildneon -eq 1; then - echo NEON support not available - fi - ;; - arm | armv7*) - CFLAGS="${CFLAGS} -DUNALIGNED_OK" - SFLAGS="${SFLAGS} -DUNALIGNED_OK" - - if test $buildacle -eq 1; then - echo ACLE support not available - fi - - if test $buildneon -eq 1; then - CFLAGS="${CFLAGS} ${floatabi} -mfpu=neon -DARM_NEON_ADLER32" - SFLAGS="${SFLAGS} ${floatabi} -mfpu=neon -DARM_NEON_ADLER32" - - ARCH_STATIC_OBJS="${ARCH_STATIC_OBJS} adler32_neon.o" - ARCH_SHARED_OBJS="${ARCH_SHARED_OBJS} adler32_neon.lo" - fi - ;; - armv8-a | armv8-a+simd) - CFLAGS="${CFLAGS} -DUNALIGNED_OK" - SFLAGS="${SFLAGS} -DUNALIGNED_OK" - - if test $buildacle -eq 1; then - echo ACLE support not available - fi - - if test $buildneon -eq 1; then - CFLAGS="${CFLAGS} ${floatabi}" - SFLAGS="${SFLAGS} ${floatabi}" - - if test $MFPU_NEON_AVAILABLE -eq 1;then - CFLAGS="${CFLAGS} -mfpu=neon" - SFLAGS="${SFLAGS} -mfpu=neon" - fi - - CFLAGS="${CFLAGS} -DARM_NEON_ADLER32" - SFLAGS="${SFLAGS} -DARM_NEON_ADLER32" - - ARCH_STATIC_OBJS="${ARCH_STATIC_OBJS} adler32_neon.o" - ARCH_SHARED_OBJS="${ARCH_SHARED_OBJS} adler32_neon.lo" - fi - ;; - armv8-a+crc | armv8-a+crc+simd | armv8.[1234]-a | armv8.[1234]-a+simd) - CFLAGS="-march=${ARCH} ${CFLAGS} -DARM_ACLE_CRC_HASH -DUNALIGNED_OK" - SFLAGS="-march=${ARCH} ${SFLAGS} -DARM_ACLE_CRC_HASH -DUNALIGNED_OK" - - ARCH_STATIC_OBJS="${ARCH_STATIC_OBJS} crc32_acle.o insert_string_acle.o" - ARCH_SHARED_OBJS="${ARCH_SHARED_OBJS} crc32_acle.lo insert_string_acle.lo" - - if test $buildneon -eq 1; then - CFLAGS="${CFLAGS} ${floatabi}" - SFLAGS="${SFLAGS} ${floatabi}" - - if test $MFPU_NEON_AVAILABLE -eq 1;then - CFLAGS="${CFLAGS} -mfpu=neon" - SFLAGS="${SFLAGS} -mfpu=neon" - fi - - CFLAGS="${CFLAGS} -DARM_NEON_ADLER32" - SFLAGS="${SFLAGS} -DARM_NEON_ADLER32" - - ARCH_STATIC_OBJS="${ARCH_STATIC_OBJS} adler32_neon.o" - ARCH_SHARED_OBJS="${ARCH_SHARED_OBJS} adler32_neon.lo" - fi - ;; - esac - - ;; - # 64-bit ARM specific optimizations - aarch64) - [ ! -z $CROSS_PREFIX ] && QEMU_ARCH=aarch64 - ARCHDIR=arch/arm - ARCH_STATIC_OBJS="${ARCH_STATIC_OBJS} armfeature.o fill_window_arm.o" - ARCH_SHARED_OBJS="${ARCH_SHARED_OBJS} armfeature.lo fill_window_arm.lo" - - if test $native -eq 0; then - ARCH="armv8-a" - else - ARCH="native" - fi - if test $buildacle -eq 1; then - if test $native -eq 0; then - ARCH="${ARCH}+crc" - fi - CFLAGS="${CFLAGS} -DARM_ACLE_CRC_HASH" - SFLAGS="${SFLAGS} -DARM_ACLE_CRC_HASH" - ARCH_STATIC_OBJS="${ARCH_STATIC_OBJS} crc32_acle.o insert_string_acle.o" - ARCH_SHARED_OBJS="${ARCH_SHARED_OBJS} crc32_acle.lo insert_string_acle.lo" - fi - if test $buildneon -eq 1; then - if test $native -eq 0; then - ARCH="${ARCH}+simd" - fi - CFLAGS="${CFLAGS} -DARM_NEON_ADLER32" - SFLAGS="${SFLAGS} -DARM_NEON_ADLER32" - ARCH_STATIC_OBJS="${ARCH_STATIC_OBJS} adler32_neon.o" - ARCH_SHARED_OBJS="${ARCH_SHARED_OBJS} adler32_neon.lo" - fi - CFLAGS="-march=${ARCH} ${CFLAGS} -DUNALIGNED_OK" - SFLAGS="-march=${ARCH} ${SFLAGS} -DUNALIGNED_OK" - ;; - powerpc) - [ ! -z $CROSS_PREFIX ] && QEMU_ARCH=ppc - ;; - powerpc64) - [ ! -z $CROSS_PREFIX ] && QEMU_ARCH=ppc64 - ;; - s390x) - [ ! -z $CROSS_PREFIX ] && QEMU_ARCH=s390x - ARCHDIR=arch/s390 - if test $builddfltccdeflate -eq 1 -o $builddfltccinflate -eq 1; then - ARCH_STATIC_OBJS="${ARCH_STATIC_OBJS} dfltcc_common.o" - ARCH_SHARED_OBJS="${ARCH_SHARED_OBJS} dfltcc_common.lo" - fi - if test $builddfltccdeflate -eq 1; then - CFLAGS="${CFLAGS} -DS390_DFLTCC_DEFLATE" - SFLAGS="${SFLAGS} -DS390_DFLTCC_DEFLATE" - ARCH_STATIC_OBJS="${ARCH_STATIC_OBJS} dfltcc_deflate.o" - ARCH_SHARED_OBJS="${ARCH_SHARED_OBJS} dfltcc_deflate.lo" - ARCH="${ARCH}+dfltcc-deflate" - fi - if test $builddfltccinflate -eq 1; then - CFLAGS="${CFLAGS} -DS390_DFLTCC_INFLATE" - SFLAGS="${SFLAGS} -DS390_DFLTCC_INFLATE" - ARCH_STATIC_OBJS="${ARCH_STATIC_OBJS} dfltcc_inflate.o" - ARCH_SHARED_OBJS="${ARCH_SHARED_OBJS} dfltcc_inflate.lo" - ARCH="${ARCH}+dfltcc-inflate" - fi - ;; - *) - [ ! -z $CROSS_PREFIX ] && QEMU_ARCH=$ARCH - ;; -esac - -echo "ARCH: ${ARCH}" -echo "Using arch directory: ${ARCHDIR}" - -# show the results in the log -echo >> configure.log -echo ALL = $ALL >> configure.log -echo AR = $AR >> configure.log -echo ARFLAGS = $ARFLAGS >> configure.log -echo CC = $CC >> configure.log -echo CFLAGS = $CFLAGS >> configure.log -echo EXE = $EXE >> configure.log -echo LDCONFIG = $LDCONFIG >> configure.log -echo LDFLAGS = $LDFLAGS >> configure.log -echo LDSHARED = $LDSHARED >> configure.log -echo LDSHAREDFLAGS = $LDSHAREDFLAGS >> configure.log -echo LDSHAREDLIBC = $LDSHAREDLIBC >> configure.log -echo DEFFILE = $DEFFILE >> configure.log -echo RC = $RC >> configure.log -echo RCFLAGS = $RCFLAGS >> configure.log -echo RCOBJS = $RCOBJS >> configure.log -echo STRIP = $STRIP >> configure.log -echo OBJC = $OBJC >> configure.log -echo PIC_OBJC = $PIC_OBJC >> configure.log -echo RANLIB = $RANLIB >> configure.log -echo SFLAGS = $SFLAGS >> configure.log -echo SHAREDLIB = $SHAREDLIB >> configure.log -echo SHAREDLIBM = $SHAREDLIBM >> configure.log -echo SHAREDLIBV = $SHAREDLIBV >> configure.log -echo SHAREDTARGET = $SHAREDTARGET >> configure.log -echo IMPORTLIB = $IMPORTLIB >> configure.log -echo INSTALLTARGETS = $INSTALLTARGETS >> configure.log -echo UNINSTALLTARGETS = $UNINSTALLTARGETS >> configure.log -echo SRCDIR = $SRCDIR >> configure.log -echo BUILDDIR = $BUILDDIR >> configure.log -echo STATICLIB = $STATICLIB >> configure.log -echo TEST = $TEST >> configure.log -echo VER = $VER >> configure.log -echo exec_prefix = $exec_prefix >> configure.log -echo includedir = $includedir >> configure.log -echo bindir = $bindir >> configure.log -echo libdir = $libdir >> configure.log -echo mandir = $mandir >> configure.log -echo prefix = $prefix >> configure.log -echo sharedlibdir = $sharedlibdir >> configure.log -echo uname = $uname >> configure.log -echo sse2flag = $sse2flag >> configure.log -echo sse4flag = $sse4flag >> configure.log -echo pclmulflag = $pclmulflag >> configure.log -echo ARCHDIR = ${ARCHDIR} >> configure.log -echo ARCH_STATIC_OBJS = ${ARCH_STATIC_OBJS} >> configure.log -echo ARCH_SHARED_OBJS = ${ARCH_SHARED_OBJS} >> configure.log - -# update Makefile with the configure results - -INCLUDES="-I$SRCDIR" -if [ "$SRCDIR" != "$BUILDDIR" ]; then INCLUDES="-I$BUILDDIR ${INCLUDES}"; fi - -sed < $SRCDIR/Makefile.in " -/^CC *=/s#=.*#=$CC# -/^CFLAGS *=/s#=.*#=$CFLAGS# -/^WITH_FUZZERS *=/s#=.*#=$with_fuzzers# -/^SFLAGS *=/s#=.*#=$SFLAGS# -/^LDFLAGS *=/s#=.*#=$LDFLAGS# -/^LDSHARED *=/s#=.*#=$LDSHARED# -/^LDSHAREDFLAGS *=/s#=.*#=$LDSHAREDFLAGS# -/^LIBNAME1 *=/s#=.*#=$LIBNAME# -/^LIBNAME2 *=/s#=.*#=$LIBNAME2# -/^SUFFIX *=/s#=.*#=$SUFFIX# -/^STATICLIB *=/s#=.*#=$STATICLIB# -/^SHAREDLIB *=/s#=.*#=$SHAREDLIB# -/^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV# -/^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM# -/^SHAREDTARGET *=/s#=.*#=$SHAREDTARGET# -/^IMPORTLIB *=/s#=.*#=$IMPORTLIB# -/^VER *=/s#=.*#=$VER# -/^VER1 *=/s#=.*#=$VER1# -/^AR *=/s#=.*#=$AR# -/^ARFLAGS *=/s#=.*#=$ARFLAGS# -/^RANLIB *=/s#=.*#=$RANLIB# -/^LDCONFIG *=/s#=.*#=$LDCONFIG# -/^LDSHAREDLIBC *=/s#=.*#=$LDSHAREDLIBC# -/^DEFFILE *=/s#=.*#=$DEFFILE# -/^RC *=/s#=.*#=$RC# -/^RCFLAGS *=/s#=.*#=$RCFLAGS# -/^RCOBJS *=/s#=.*#=$RCOBJS# -/^STRIP *=/s#=.*#=$STRIP# -/^EXE *=/s#=.*#=$EXE# -/^prefix *=/s#=.*#= $prefix# -/^exec_prefix *=/s#=.*#= $exec_prefix# -/^bindir *=/s#=.*#= $bindir# -/^libdir *=/s#=.*#= $libdir# -/^sharedlibdir *=/s#=.*#= $sharedlibdir# -/^includedir *=/s#=.*#= $includedir# -/^mandir *=/s#=.*#= $mandir# -/^SRCDIR *=/s#=.*#=$SRCDIR# -/^INCLUDES *=/s#=.*#=$INCLUDES# -/^OBJC *=/s#=.*#= $OBJC# -/^PIC_OBJC *=/s#=.*#= $PIC_OBJC# -/^all: */s#:.*#: $ALL# -/^install-libs: */s#:.*#: $INSTALLTARGETS# -/^uninstall-libs: */s#:.*#: $UNINSTALLTARGETS# -/^ARCHDIR *=/s#=.*#=$ARCHDIR# -/^ARCH_STATIC_OBJS *=/s#=.*#=$ARCH_STATIC_OBJS# -/^ARCH_SHARED_OBJS *=/s#=.*#=$ARCH_SHARED_OBJS# -" > Makefile - -# Append header files dependences. -for file in $(ls -1 $SRCDIR/*.c $SRCDIR/test/*.c $SRCDIR/test/fuzz/*.c $SRCDIR/$ARCHDIR/*.c); do - short_name=$(echo $file | sed -e "s#$SRCDIR/##g") - incs=$(grep -h include $file | sed -n 's/# *\include *"\(.*\.h\)".*/\1/p' | sort | uniq) - includes=$(for i in $incs; do - # Check that the include file exists in the current dir, - # otherwise it may be one of the system include header. - if test -e $SRCDIR/$i; then - echo -n " \$(SRCDIR)/$i" - fi - # We also need to check whether the include file is in the ARCHDIR. - if test -e $SRCDIR/$ARCHDIR/$i; then - echo -n " \$(SRCDIR)/$ARCHDIR/$i" - fi - done) - obj=$(basename $(echo $file | sed -e 's/\.c/\.o/g' -e 's#^\./##g')) - lobj=$(basename $(echo $file | sed -e 's/\.c/\.lo/g' -e 's#^\./##g')) - - if grep -q "^$obj:" Makefile; then - # Replace the existing line with a line with all dependences. - sed -i "s#$obj:.*#$obj: \$(SRCDIR)/$short_name $includes#g" Makefile - - # Special case example64 and minigzip64. - case "$obj" in - example.o) - sed -i "s#example64.o:.*#example64.o: \$(SRCDIR)/$short_name $includes#g" Makefile - ;; - minigzip.o) - sed -i "s#minigzip64.o:.*#minigzip64.o: \$(SRCDIR)/$short_name $includes#g" Makefile - ;; - esac - else - # Append at the end of Makefile a new line with the header dependences. - echo "$obj: \$(SRCDIR)/$short_name $includes" >> Makefile - - # In case this is one of the ARCHDIR files, append a dependence line - # that will force the `$(MAKE) -C $(ARCHDIR)` generic rule. Without this - # we would only execute the copy rule from ARCHDIR to SRCDIR. - if test -e $SRCDIR/$ARCHDIR/$(basename $file); then - echo "$ARCHDIR/$obj: \$(SRCDIR)/$short_name $includes" >> Makefile - fi - fi - - if grep -q "^$lobj:" Makefile; then - # Replace the existing line with a line with all dependences. - sed -i "s#$lobj:.*#$lobj: \$(SRCDIR)/$short_name $includes#g" Makefile - else - # Append at the end of Makefile a new line with the header dependences. - echo "$lobj: \$(SRCDIR)/$short_name $includes" >> Makefile - fi -done - -# Generate Makefile in arch dir -mkdir -p $ARCHDIR - -ARCHINCLUDES="-I$SRCDIR/$ARCHDIR -I$SRCDIR" -if [ "$SRCDIR" != "$BUILDDIR" ]; then ARCHINCLUDES="-I$BUILDDIR ${ARCHINCLUDES}"; fi - -sed < $SRCDIR/$ARCHDIR/Makefile.in " -/^CC *=/s#=.*#=$CC# -/^CFLAGS *=/s#=.*#=$CFLAGS# -/^SFLAGS *=/s#=.*#=$SFLAGS# -/^LDFLAGS *=/s#=.*#=$LDFLAGS# -/^INCLUDES *=/s#=.*#=$ARCHINCLUDES# -/^SUFFIX *=/s#=.*#=$SUFFIX# -/^SRCDIR *=/s#=.*#=$SRCDIR/$ARCHDIR# -/^SRCTOP *=/s#=.*#=$SRCDIR# -/^TOPDIR *=/s#=.*#=$BUILDDIR# -/^SSE2FLAG *=/s#=.*#=$sse2flag# -/^SSE4FLAG *=/s#=.*#=$sse4flag# -/^PCLMULFLAG *=/s#=.*#=$pclmulflag# -" > $ARCHDIR/Makefile - -# Append header files dependences. -for file in $(ls -1 $SRCDIR/$ARCHDIR/*.c); do - incs=$(grep -h include $file | sed -n 's/# *\include *"\(.*\.h\)".*/\1/p' | sort | uniq) - includes=$(for i in $incs; do - # Check that the include file exists in the current dir, - # otherwise it may be one of the system include header. - if test -e $SRCDIR/$i; then - echo -n " \$(SRCTOP)/$i" - fi - # We also need to check whether the include file is in the ARCHDIR. - if test -e $SRCDIR/$ARCHDIR/$i; then - echo -n " \$(SRCDIR)/$i" - fi - done) - obj=$(basename $(echo $file | sed -e 's/\.c/\.o/g' -e 's#^\./##g')) - lobj=$(basename $(echo $file | sed -e 's/\.c/\.lo/g' -e 's#^\./##g')) - short_name=$(basename $file) - if grep -q "^$obj:" $ARCHDIR/Makefile; then - # Replace the existing line with a line with all dependences. - sed -i "s#$obj:.*#$obj: \$(SRCDIR)/$short_name $includes#g" $ARCHDIR/Makefile - else - # Append at the end of Makefile a new line with the header dependences. - echo "$obj: \$(SRCDIR)/$short_name $includes" >> $ARCHDIR/Makefile - fi - - if grep -q "^$lobj:" $ARCHDIR/Makefile; then - # Replace the existing line with a line with all dependences. - sed -i "s#$lobj:.*#$lobj: \$(SRCDIR)/$short_name $includes#g" $ARCHDIR/Makefile - else - # Append at the end of Makefile a new line with the header dependences. - echo "$lobj: \$(SRCDIR)/$short_name $includes" >> $ARCHDIR/Makefile - fi -done - -# Generate Makefile in test dir -mkdir -p test -if test $compat -eq 1; then COMPATTESTS="compattests"; fi -if test $QEMU_ARCH; then QEMU_RUN="qemu-$QEMU_ARCH -L /usr/${CHOST}/"; fi -sed < $SRCDIR/test/Makefile.in " -/^CC *=/s#=.*#=$CC# -/^CFLAGS *=/s#=.*#=$CFLAGS# -/^LDFLAGS *=/s#=.*#=$LDFLAGS# -/^EXE *=/s#=.*#=$EXE# -/^oldtests: */s#:.*#: $TEST# -/^SRCDIR *=/s#=.*#=$SRCDIR/test# -/^SRCTOP *=/s#=.*#=$SRCDIR# -/^COMPATTESTS *=/s#=.*#=$COMPATTESTS# -/^QEMU_RUN *=/s#=.*#=$QEMU_RUN# -/^WITH_FUZZERS *=/s#=.*#=$with_fuzzers# -" > test/Makefile - -# create zlib.pc with the configure results -sed < $SRCDIR/zlib.pc.in " -/^CC *=/s#=.*#=$CC# -/^CFLAGS *=/s#=.*#=$CFLAGS# -/^LDFLAGS *=/s#=.*#=$LDFLAGS# -/^LDSHARED *=/s#=.*#=$LDSHARED# -/^LDSHAREDFLAGS *=/s#=.*#=$LDSHAREDFLAGS# -/^STATICLIB *=/s#=.*#=$STATICLIB# -/^SHAREDLIB *=/s#=.*#=$SHAREDLIB# -/^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV# -/^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM# -/^IMPORTLIB *=/s#=.*#=$IMPORTLIB# -/^AR *=/s#=.*#=$AR# -/^ARFLAGS *=/s#=.*#=$ARFLAGS# -/^RANLIB *=/s#=.*#=$RANLIB# -/^EXE *=/s#=.*#=$EXE# -/^prefix *=/s#=.*#=$prefix# -/^exec_prefix *=/s#=.*#=$exec_prefix# -/^bindir *=/s#=.*#=$bindir# -/^libdir *=/s#=.*#=$libdir# -/^sharedlibdir *=/s#=.*#=$sharedlibdir# -/^includedir *=/s#=.*#=$includedir# -/^mandir *=/s#=.*#=$mandir# -/^LDFLAGS *=/s#=.*#=$LDFLAGS# -" | sed -e " -s/\@VERSION\@/$VER/g; -s/\@SUFFIX\@/$SUFFIX/g; -" > ${LIBNAME2}.pc - -# done -leave 0 diff --git a/libs/zlibng/crc32.c b/libs/zlibng/crc32.c deleted file mode 100644 index 6c495a57a..000000000 --- a/libs/zlibng/crc32.c +++ /dev/null @@ -1,498 +0,0 @@ -/* crc32.c -- compute the CRC-32 of a data stream - * Copyright (C) 1995-2006, 2010, 2011, 2012, 2016, 2018 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - * - * Thanks to Rodney Brown for his contribution of faster - * CRC methods: exclusive-oring 32 bits of data at a time, and pre-computing - * tables for updating the shift register in one step with three exclusive-ors - * instead of four steps with four exclusive-ors. This results in about a - * factor of two increase in speed on a Power PC G4 (PPC7455) using gcc -O3. - */ - -/* @(#) $Id$ */ - -# include "zbuild.h" -# include "gzendian.h" -# include - -/* - Note on the use of DYNAMIC_CRC_TABLE: there is no mutex or semaphore - protection on the static variables used to control the first-use generation - of the crc tables. Therefore, if you #define DYNAMIC_CRC_TABLE, you should - first call get_crc_table() to initialize the tables before allowing more than - one thread to use crc32(). - - DYNAMIC_CRC_TABLE and MAKECRCH can be #defined to write out crc32.h. A main() - routine is also produced, so that this one source file can be compiled to an - executable. - */ - -#ifdef MAKECRCH -# include -# ifndef DYNAMIC_CRC_TABLE -# define DYNAMIC_CRC_TABLE -# endif /* !DYNAMIC_CRC_TABLE */ -#endif /* MAKECRCH */ - -#include "deflate.h" -#include "functable.h" - - -/* Local functions for crc concatenation */ -#define GF2_DIM 32 /* dimension of GF(2) vectors (length of CRC) */ -static uint32_t gf2_matrix_times(const uint32_t *mat, uint32_t vec); -static uint32_t crc32_combine_(uint32_t crc1, uint32_t crc2, z_off64_t len2); -static void crc32_combine_gen_(uint32_t *op, z_off64_t len2); - -/* ========================================================================= */ -static uint32_t gf2_matrix_times(const uint32_t *mat, uint32_t vec) { - uint32_t sum = 0; - while (vec) { - if (vec & 1) - sum ^= *mat; - vec >>= 1; - mat++; - } - return sum; -} - -#ifdef DYNAMIC_CRC_TABLE -volatile int crc_table_empty = 1; -static uint32_t crc_table[8][256]; -static uint32_t crc_comb[GF2_DIM][GF2_DIM]; -void make_crc_table(void); -static void gf2_matrix_square(uint32_t *square, const uint32_t *mat); -#ifdef MAKECRCH -static void write_table(FILE *, const uint32_t *, int); -#endif /* MAKECRCH */ - -/* ========================================================================= */ -static void gf2_matrix_square(uint32_t *square, const uint32_t *mat) { - int n; - - for (n = 0; n < GF2_DIM; n++) - square[n] = gf2_matrix_times(mat, mat[n]); -} - -/* - Generate tables for a byte-wise 32-bit CRC calculation on the polynomial: - x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x+1. - - Polynomials over GF(2) are represented in binary, one bit per coefficient, - with the lowest powers in the most significant bit. Then adding polynomials - is just exclusive-or, and multiplying a polynomial by x is a right shift by - one. If we call the above polynomial p, and represent a byte as the - polynomial q, also with the lowest power in the most significant bit (so the - byte 0xb1 is the polynomial x^7+x^3+x+1), then the CRC is (q*x^32) mod p, - where a mod b means the remainder after dividing a by b. - - This calculation is done using the shift-register method of multiplying and - taking the remainder. The register is initialized to zero, and for each - incoming bit, x^32 is added mod p to the register if the bit is a one (where - x^32 mod p is p+x^32 = x^26+...+1), and the register is multiplied mod p by - x (which is shifting right by one and adding x^32 mod p if the bit shifted - out is a one). We start with the highest power (least significant bit) of - q and repeat for all eight bits of q. - - The first table is simply the CRC of all possible eight bit values. This is - all the information needed to generate CRCs on data a byte at a time for all - combinations of CRC register values and incoming bytes. The remaining tables - allow for word-at-a-time CRC calculation for both big-endian and little- - endian machines, where a word is four bytes. -*/ -void make_crc_table() { - uint32_t c; - int n, k; - uint32_t poly; /* polynomial exclusive-or pattern */ - /* terms of polynomial defining this crc (except x^32): */ - static volatile int first = 1; /* flag to limit concurrent making */ - static const unsigned char p[] = {0, 1, 2, 4, 5, 7, 8, 10, 11, 12, 16, 22, 23, 26}; - - /* See if another task is already doing this (not thread-safe, but better - than nothing -- significantly reduces duration of vulnerability in - case the advice about DYNAMIC_CRC_TABLE is ignored) */ - if (first) { - first = 0; - - /* make exclusive-or pattern from polynomial (0xedb88320) */ - poly = 0; - for (n = 0; n < (int)(sizeof(p)/sizeof(unsigned char)); n++) - poly |= (uint32_t)1 << (31 - p[n]); - - /* generate a crc for every 8-bit value */ - for (n = 0; n < 256; n++) { - c = (uint32_t)n; - for (k = 0; k < 8; k++) - c = c & 1 ? poly ^ (c >> 1) : c >> 1; - crc_table[0][n] = c; - } - - /* generate crc for each value followed by one, two, and three zeros, - and then the byte reversal of those as well as the first table */ - for (n = 0; n < 256; n++) { - c = crc_table[0][n]; - crc_table[4][n] = ZSWAP32(c); - for (k = 1; k < 4; k++) { - c = crc_table[0][c & 0xff] ^ (c >> 8); - crc_table[k][n] = c; - crc_table[k + 4][n] = ZSWAP32(c); - } - } - - /* generate zero operators table for crc32_combine() */ - - /* generate the operator to apply a single zero bit to a CRC -- the - first row adds the polynomial if the low bit is a 1, and the - remaining rows shift the CRC right one bit */ - k = GF2_DIM - 3; - crc_comb[k][0] = 0xedb88320UL; /* CRC-32 polynomial */ - uint32_t row = 1; - for (n = 1; n < GF2_DIM; n++) { - crc_comb[k][n] = row; - row <<= 1; - } - - /* generate operators that apply 2, 4, and 8 zeros to a CRC, putting - the last one, the operator for one zero byte, at the 0 position */ - gf2_matrix_square(crc_comb[k + 1], crc_comb[k]); - gf2_matrix_square(crc_comb[k + 2], crc_comb[k + 1]); - gf2_matrix_square(crc_comb[0], crc_comb[k + 2]); - - /* generate operators for applying 2^n zero bytes to a CRC, filling out - the remainder of the table -- the operators repeat after GF2_DIM - values of n, so the table only needs GF2_DIM entries, regardless of - the size of the length being processed */ - for (n = 1; n < k; n++) - gf2_matrix_square(crc_comb[n], crc_comb[n - 1]); - - /* mark tables as complete, in case someone else is waiting */ - crc_table_empty = 0; - } else { /* not first */ - /* wait for the other guy to finish (not efficient, but rare) */ - while (crc_table_empty) - {} - } -#ifdef MAKECRCH - { - FILE *out; - - out = fopen("crc32.h", "w"); - if (out == NULL) return; - - /* write out CRC table to crc32.h */ - fprintf(out, "/* crc32.h -- tables for rapid CRC calculation\n"); - fprintf(out, " * Generated automatically by crc32.c\n */\n\n"); - fprintf(out, "static const uint32_t "); - fprintf(out, "crc_table[8][256] =\n{\n {\n"); - write_table(out, crc_table[0], 256); - for (k = 1; k < 8; k++) { - fprintf(out, " },\n {\n"); - write_table(out, crc_table[k], 256); - } - fprintf(out, " }\n};\n"); - - /* write out zero operator table to crc32.h */ - fprintf(out, "\nstatic const uint32_t "); - fprintf(out, "crc_comb[%d][%d] =\n{\n {\n", GF2_DIM, GF2_DIM); - write_table(out, crc_comb[0], GF2_DIM); - for (k = 1; k < GF2_DIM; k++) { - fprintf(out, " },\n {\n"); - write_table(out, crc_comb[k], GF2_DIM); - } - fprintf(out, " }\n};\n"); - fclose(out); - } -#endif /* MAKECRCH */ -} - -#ifdef MAKECRCH -static void write_table(FILE *out, const uint32_t *table, int k) { - int n; - - for (n = 0; n < k; n++) - fprintf(out, "%s0x%08" PRIx32 "%s", n % 5 ? "" : " ", - (uint32_t)(table[n]), - n == k - 1 ? "\n" : (n % 5 == 4 ? ",\n" : ", ")); -} - -int main() -{ - make_crc_table(); - return 0; -} -#endif /* MAKECRCH */ - -#else /* !DYNAMIC_CRC_TABLE */ -/* ======================================================================== - * Tables of CRC-32s of all single-byte values, made by make_crc_table(), - * and tables of zero operator matrices for crc32_combine(). - */ -#include "crc32.h" -#endif /* DYNAMIC_CRC_TABLE */ - -/* ========================================================================= - * This function can be used by asm versions of crc32() - */ -const uint32_t * ZEXPORT PREFIX(get_crc_table)(void) { -#ifdef DYNAMIC_CRC_TABLE - if (crc_table_empty) - make_crc_table(); -#endif /* DYNAMIC_CRC_TABLE */ - return (const uint32_t *)crc_table; -} - -uint32_t ZEXPORT PREFIX(crc32_z)(uint32_t crc, const unsigned char *buf, size_t len) { - if (buf == NULL) return 0; - - return functable.crc32(crc, buf, len); -} -/* ========================================================================= */ -#define DO1 crc = crc_table[0][((int)crc ^ (*buf++)) & 0xff] ^ (crc >> 8) -#define DO8 DO1; DO1; DO1; DO1; DO1; DO1; DO1; DO1 -#define DO4 DO1; DO1; DO1; DO1 - -/* ========================================================================= */ -ZLIB_INTERNAL uint32_t crc32_generic(uint32_t crc, const unsigned char *buf, uint64_t len) -{ - crc = crc ^ 0xffffffff; - -#ifdef UNROLL_MORE - while (len >= 8) { - DO8; - len -= 8; - } -#else - while (len >= 4) { - DO4; - len -= 4; - } -#endif - - if (len) do { - DO1; - } while (--len); - return crc ^ 0xffffffff; -} - -uint32_t ZEXPORT PREFIX(crc32)(uint32_t crc, const unsigned char *buf, uint32_t len) { - return PREFIX(crc32_z)(crc, buf, len); -} - -/* - This BYFOUR code accesses the passed unsigned char * buffer with a 32-bit - integer pointer type. This violates the strict aliasing rule, where a - compiler can assume, for optimization purposes, that two pointers to - fundamentally different types won't ever point to the same memory. This can - manifest as a problem only if one of the pointers is written to. This code - only reads from those pointers. So long as this code remains isolated in - this compilation unit, there won't be a problem. For this reason, this code - should not be copied and pasted into a compilation unit in which other code - writes to the buffer that is passed to these routines. - */ - -/* ========================================================================= */ -#if BYTE_ORDER == LITTLE_ENDIAN -#define DOLIT4 c ^= *buf4++; \ - c = crc_table[3][c & 0xff] ^ crc_table[2][(c >> 8) & 0xff] ^ \ - crc_table[1][(c >> 16) & 0xff] ^ crc_table[0][c >> 24] -#define DOLIT32 DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4 - -/* ========================================================================= */ -ZLIB_INTERNAL uint32_t crc32_little(uint32_t crc, const unsigned char *buf, uint64_t len) { - register uint32_t c; - register const uint32_t *buf4; - - c = crc; - c = ~c; - while (len && ((ptrdiff_t)buf & 3)) { - c = crc_table[0][(c ^ *buf++) & 0xff] ^ (c >> 8); - len--; - } - - buf4 = (const uint32_t *)(const void *)buf; - -#ifdef UNROLL_MORE - while (len >= 32) { - DOLIT32; - len -= 32; - } -#endif - - while (len >= 4) { - DOLIT4; - len -= 4; - } - buf = (const unsigned char *)buf4; - - if (len) do { - c = crc_table[0][(c ^ *buf++) & 0xff] ^ (c >> 8); - } while (--len); - c = ~c; - return c; -} -#endif /* BYTE_ORDER == LITTLE_ENDIAN */ - -/* ========================================================================= */ -#if BYTE_ORDER == BIG_ENDIAN -#define DOBIG4 c ^= *buf4++; \ - c = crc_table[4][c & 0xff] ^ crc_table[5][(c >> 8) & 0xff] ^ \ - crc_table[6][(c >> 16) & 0xff] ^ crc_table[7][c >> 24] -#define DOBIG32 DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4 - -/* ========================================================================= */ -ZLIB_INTERNAL uint32_t crc32_big(uint32_t crc, const unsigned char *buf, uint64_t len) { - register uint32_t c; - register const uint32_t *buf4; - - c = ZSWAP32(crc); - c = ~c; - while (len && ((ptrdiff_t)buf & 3)) { - c = crc_table[4][(c >> 24) ^ *buf++] ^ (c << 8); - len--; - } - - buf4 = (const uint32_t *)(const void *)buf; - -#ifdef UNROLL_MORE - while (len >= 32) { - DOBIG32; - len -= 32; - } -#endif - - while (len >= 4) { - DOBIG4; - len -= 4; - } - buf = (const unsigned char *)buf4; - - if (len) do { - c = crc_table[4][(c >> 24) ^ *buf++] ^ (c << 8); - } while (--len); - c = ~c; - return ZSWAP32(c); -} -#endif /* BYTE_ORDER == BIG_ENDIAN */ - - -/* ========================================================================= */ -static uint32_t crc32_combine_(uint32_t crc1, uint32_t crc2, z_off64_t len2) { - int n; - -#ifdef DYNAMIC_CRC_TABLE - if (crc_table_empty) - make_crc_table(); -#endif /* DYNAMIC_CRC_TABLE */ - - if (len2 > 0) - /* operator for 2^n zeros repeats every GF2_DIM n values */ - for (n = 0; len2; n = (n + 1) % GF2_DIM, len2 >>= 1) - if (len2 & 1) - crc1 = gf2_matrix_times(crc_comb[n], crc1); - return crc1 ^ crc2; -} - -/* ========================================================================= */ -uint32_t ZEXPORT PREFIX(crc32_combine)(uint32_t crc1, uint32_t crc2, z_off_t len2) { - return crc32_combine_(crc1, crc2, len2); -} - -uint32_t ZEXPORT PREFIX(crc32_combine64)(uint32_t crc1, uint32_t crc2, z_off64_t len2) { - return crc32_combine_(crc1, crc2, len2); -} - -#ifdef X86_PCLMULQDQ_CRC -#include "arch/x86/x86.h" -#include "arch/x86/crc_folding.h" - -ZLIB_INTERNAL void crc_finalize(deflate_state *const s) { - if (x86_cpu_has_pclmulqdq) - s->strm->adler = crc_fold_512to32(s); -} -#endif - -ZLIB_INTERNAL void crc_reset(deflate_state *const s) { -#ifdef X86_PCLMULQDQ_CRC - if (x86_cpu_has_pclmulqdq) { - crc_fold_init(s); - return; - } -#endif - s->strm->adler = PREFIX(crc32)(0L, NULL, 0); -} - -ZLIB_INTERNAL void copy_with_crc(PREFIX3(stream) *strm, unsigned char *dst, unsigned long size) { -#ifdef X86_PCLMULQDQ_CRC - if (x86_cpu_has_pclmulqdq) { - crc_fold_copy(strm->state, dst, strm->next_in, size); - return; - } -#endif - memcpy(dst, strm->next_in, size); - strm->adler = PREFIX(crc32)(strm->adler, dst, size); -} - -/* ========================================================================= */ -static void crc32_combine_gen_(uint32_t *op, z_off64_t len2) -{ - uint32_t row; - int j; - unsigned i; - -#ifdef DYNAMIC_CRC_TABLE - if (crc_table_empty) - make_crc_table(); -#endif /* DYNAMIC_CRC_TABLE */ - - /* if len2 is zero or negative, return the identity matrix */ - if (len2 <= 0) { - row = 1; - for (j = 0; j < GF2_DIM; j++) { - op[j] = row; - row <<= 1; - } - return; - } - - /* at least one bit in len2 is set -- find it, and copy the operator - corresponding to that position into op */ - i = 0; - for (;;) { - if (len2 & 1) { - for (j = 0; j < GF2_DIM; j++) - op[j] = crc_comb[i][j]; - break; - } - len2 >>= 1; - i = (i + 1) % GF2_DIM; - } - - /* for each remaining bit set in len2 (if any), multiply op by the operator - corresponding to that position */ - for (;;) { - len2 >>= 1; - i = (i + 1) % GF2_DIM; - if (len2 == 0) - break; - if (len2 & 1) - for (j = 0; j < GF2_DIM; j++) - op[j] = gf2_matrix_times(crc_comb[i], op[j]); - } -} - -/* ========================================================================= */ -void ZEXPORT PREFIX(crc32_combine_gen)(uint32_t *op, z_off_t len2) -{ - crc32_combine_gen_(op, len2); -} - -void ZEXPORT PREFIX(crc32_combine_gen64)(uint32_t *op, z_off64_t len2) -{ - crc32_combine_gen_(op, len2); -} - -/* ========================================================================= */ -uint32_t ZEXPORT PREFIX(crc32_combine_op)(uint32_t crc1, uint32_t crc2, const uint32_t *op) -{ - return gf2_matrix_times(op, crc1) ^ crc2; -} diff --git a/libs/zlibng/crc32.h b/libs/zlibng/crc32.h deleted file mode 100644 index 47ca7c068..000000000 --- a/libs/zlibng/crc32.h +++ /dev/null @@ -1,735 +0,0 @@ -#ifndef CRC32_H_ -#define CRC32_H_ - -/* crc32.h -- tables for rapid CRC calculation - * Generated automatically by crc32.c - */ - -static const uint32_t crc_table[8][256] = -{ - { - 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, - 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, - 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, - 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, - 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, - 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, - 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, - 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, - 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, - 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, - 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, - 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, - 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, - 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, - 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, - 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, - 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, - 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, - 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, - 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, - 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, - 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, - 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, - 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, - 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, - 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, - 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, - 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, - 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, - 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, - 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, - 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, - 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, - 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, - 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, - 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, - 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, - 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, - 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, - 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, - 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, - 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, - 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, - 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, - 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, - 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, - 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, - 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, - 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, - 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, - 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, - 0x2d02ef8d - }, - { - 0x00000000, 0x191b3141, 0x32366282, 0x2b2d53c3, 0x646cc504, - 0x7d77f445, 0x565aa786, 0x4f4196c7, 0xc8d98a08, 0xd1c2bb49, - 0xfaefe88a, 0xe3f4d9cb, 0xacb54f0c, 0xb5ae7e4d, 0x9e832d8e, - 0x87981ccf, 0x4ac21251, 0x53d92310, 0x78f470d3, 0x61ef4192, - 0x2eaed755, 0x37b5e614, 0x1c98b5d7, 0x05838496, 0x821b9859, - 0x9b00a918, 0xb02dfadb, 0xa936cb9a, 0xe6775d5d, 0xff6c6c1c, - 0xd4413fdf, 0xcd5a0e9e, 0x958424a2, 0x8c9f15e3, 0xa7b24620, - 0xbea97761, 0xf1e8e1a6, 0xe8f3d0e7, 0xc3de8324, 0xdac5b265, - 0x5d5daeaa, 0x44469feb, 0x6f6bcc28, 0x7670fd69, 0x39316bae, - 0x202a5aef, 0x0b07092c, 0x121c386d, 0xdf4636f3, 0xc65d07b2, - 0xed705471, 0xf46b6530, 0xbb2af3f7, 0xa231c2b6, 0x891c9175, - 0x9007a034, 0x179fbcfb, 0x0e848dba, 0x25a9de79, 0x3cb2ef38, - 0x73f379ff, 0x6ae848be, 0x41c51b7d, 0x58de2a3c, 0xf0794f05, - 0xe9627e44, 0xc24f2d87, 0xdb541cc6, 0x94158a01, 0x8d0ebb40, - 0xa623e883, 0xbf38d9c2, 0x38a0c50d, 0x21bbf44c, 0x0a96a78f, - 0x138d96ce, 0x5ccc0009, 0x45d73148, 0x6efa628b, 0x77e153ca, - 0xbabb5d54, 0xa3a06c15, 0x888d3fd6, 0x91960e97, 0xded79850, - 0xc7cca911, 0xece1fad2, 0xf5facb93, 0x7262d75c, 0x6b79e61d, - 0x4054b5de, 0x594f849f, 0x160e1258, 0x0f152319, 0x243870da, - 0x3d23419b, 0x65fd6ba7, 0x7ce65ae6, 0x57cb0925, 0x4ed03864, - 0x0191aea3, 0x188a9fe2, 0x33a7cc21, 0x2abcfd60, 0xad24e1af, - 0xb43fd0ee, 0x9f12832d, 0x8609b26c, 0xc94824ab, 0xd05315ea, - 0xfb7e4629, 0xe2657768, 0x2f3f79f6, 0x362448b7, 0x1d091b74, - 0x04122a35, 0x4b53bcf2, 0x52488db3, 0x7965de70, 0x607eef31, - 0xe7e6f3fe, 0xfefdc2bf, 0xd5d0917c, 0xcccba03d, 0x838a36fa, - 0x9a9107bb, 0xb1bc5478, 0xa8a76539, 0x3b83984b, 0x2298a90a, - 0x09b5fac9, 0x10aecb88, 0x5fef5d4f, 0x46f46c0e, 0x6dd93fcd, - 0x74c20e8c, 0xf35a1243, 0xea412302, 0xc16c70c1, 0xd8774180, - 0x9736d747, 0x8e2de606, 0xa500b5c5, 0xbc1b8484, 0x71418a1a, - 0x685abb5b, 0x4377e898, 0x5a6cd9d9, 0x152d4f1e, 0x0c367e5f, - 0x271b2d9c, 0x3e001cdd, 0xb9980012, 0xa0833153, 0x8bae6290, - 0x92b553d1, 0xddf4c516, 0xc4eff457, 0xefc2a794, 0xf6d996d5, - 0xae07bce9, 0xb71c8da8, 0x9c31de6b, 0x852aef2a, 0xca6b79ed, - 0xd37048ac, 0xf85d1b6f, 0xe1462a2e, 0x66de36e1, 0x7fc507a0, - 0x54e85463, 0x4df36522, 0x02b2f3e5, 0x1ba9c2a4, 0x30849167, - 0x299fa026, 0xe4c5aeb8, 0xfdde9ff9, 0xd6f3cc3a, 0xcfe8fd7b, - 0x80a96bbc, 0x99b25afd, 0xb29f093e, 0xab84387f, 0x2c1c24b0, - 0x350715f1, 0x1e2a4632, 0x07317773, 0x4870e1b4, 0x516bd0f5, - 0x7a468336, 0x635db277, 0xcbfad74e, 0xd2e1e60f, 0xf9ccb5cc, - 0xe0d7848d, 0xaf96124a, 0xb68d230b, 0x9da070c8, 0x84bb4189, - 0x03235d46, 0x1a386c07, 0x31153fc4, 0x280e0e85, 0x674f9842, - 0x7e54a903, 0x5579fac0, 0x4c62cb81, 0x8138c51f, 0x9823f45e, - 0xb30ea79d, 0xaa1596dc, 0xe554001b, 0xfc4f315a, 0xd7626299, - 0xce7953d8, 0x49e14f17, 0x50fa7e56, 0x7bd72d95, 0x62cc1cd4, - 0x2d8d8a13, 0x3496bb52, 0x1fbbe891, 0x06a0d9d0, 0x5e7ef3ec, - 0x4765c2ad, 0x6c48916e, 0x7553a02f, 0x3a1236e8, 0x230907a9, - 0x0824546a, 0x113f652b, 0x96a779e4, 0x8fbc48a5, 0xa4911b66, - 0xbd8a2a27, 0xf2cbbce0, 0xebd08da1, 0xc0fdde62, 0xd9e6ef23, - 0x14bce1bd, 0x0da7d0fc, 0x268a833f, 0x3f91b27e, 0x70d024b9, - 0x69cb15f8, 0x42e6463b, 0x5bfd777a, 0xdc656bb5, 0xc57e5af4, - 0xee530937, 0xf7483876, 0xb809aeb1, 0xa1129ff0, 0x8a3fcc33, - 0x9324fd72 - }, - { - 0x00000000, 0x01c26a37, 0x0384d46e, 0x0246be59, 0x0709a8dc, - 0x06cbc2eb, 0x048d7cb2, 0x054f1685, 0x0e1351b8, 0x0fd13b8f, - 0x0d9785d6, 0x0c55efe1, 0x091af964, 0x08d89353, 0x0a9e2d0a, - 0x0b5c473d, 0x1c26a370, 0x1de4c947, 0x1fa2771e, 0x1e601d29, - 0x1b2f0bac, 0x1aed619b, 0x18abdfc2, 0x1969b5f5, 0x1235f2c8, - 0x13f798ff, 0x11b126a6, 0x10734c91, 0x153c5a14, 0x14fe3023, - 0x16b88e7a, 0x177ae44d, 0x384d46e0, 0x398f2cd7, 0x3bc9928e, - 0x3a0bf8b9, 0x3f44ee3c, 0x3e86840b, 0x3cc03a52, 0x3d025065, - 0x365e1758, 0x379c7d6f, 0x35dac336, 0x3418a901, 0x3157bf84, - 0x3095d5b3, 0x32d36bea, 0x331101dd, 0x246be590, 0x25a98fa7, - 0x27ef31fe, 0x262d5bc9, 0x23624d4c, 0x22a0277b, 0x20e69922, - 0x2124f315, 0x2a78b428, 0x2bbade1f, 0x29fc6046, 0x283e0a71, - 0x2d711cf4, 0x2cb376c3, 0x2ef5c89a, 0x2f37a2ad, 0x709a8dc0, - 0x7158e7f7, 0x731e59ae, 0x72dc3399, 0x7793251c, 0x76514f2b, - 0x7417f172, 0x75d59b45, 0x7e89dc78, 0x7f4bb64f, 0x7d0d0816, - 0x7ccf6221, 0x798074a4, 0x78421e93, 0x7a04a0ca, 0x7bc6cafd, - 0x6cbc2eb0, 0x6d7e4487, 0x6f38fade, 0x6efa90e9, 0x6bb5866c, - 0x6a77ec5b, 0x68315202, 0x69f33835, 0x62af7f08, 0x636d153f, - 0x612bab66, 0x60e9c151, 0x65a6d7d4, 0x6464bde3, 0x662203ba, - 0x67e0698d, 0x48d7cb20, 0x4915a117, 0x4b531f4e, 0x4a917579, - 0x4fde63fc, 0x4e1c09cb, 0x4c5ab792, 0x4d98dda5, 0x46c49a98, - 0x4706f0af, 0x45404ef6, 0x448224c1, 0x41cd3244, 0x400f5873, - 0x4249e62a, 0x438b8c1d, 0x54f16850, 0x55330267, 0x5775bc3e, - 0x56b7d609, 0x53f8c08c, 0x523aaabb, 0x507c14e2, 0x51be7ed5, - 0x5ae239e8, 0x5b2053df, 0x5966ed86, 0x58a487b1, 0x5deb9134, - 0x5c29fb03, 0x5e6f455a, 0x5fad2f6d, 0xe1351b80, 0xe0f771b7, - 0xe2b1cfee, 0xe373a5d9, 0xe63cb35c, 0xe7fed96b, 0xe5b86732, - 0xe47a0d05, 0xef264a38, 0xeee4200f, 0xeca29e56, 0xed60f461, - 0xe82fe2e4, 0xe9ed88d3, 0xebab368a, 0xea695cbd, 0xfd13b8f0, - 0xfcd1d2c7, 0xfe976c9e, 0xff5506a9, 0xfa1a102c, 0xfbd87a1b, - 0xf99ec442, 0xf85cae75, 0xf300e948, 0xf2c2837f, 0xf0843d26, - 0xf1465711, 0xf4094194, 0xf5cb2ba3, 0xf78d95fa, 0xf64fffcd, - 0xd9785d60, 0xd8ba3757, 0xdafc890e, 0xdb3ee339, 0xde71f5bc, - 0xdfb39f8b, 0xddf521d2, 0xdc374be5, 0xd76b0cd8, 0xd6a966ef, - 0xd4efd8b6, 0xd52db281, 0xd062a404, 0xd1a0ce33, 0xd3e6706a, - 0xd2241a5d, 0xc55efe10, 0xc49c9427, 0xc6da2a7e, 0xc7184049, - 0xc25756cc, 0xc3953cfb, 0xc1d382a2, 0xc011e895, 0xcb4dafa8, - 0xca8fc59f, 0xc8c97bc6, 0xc90b11f1, 0xcc440774, 0xcd866d43, - 0xcfc0d31a, 0xce02b92d, 0x91af9640, 0x906dfc77, 0x922b422e, - 0x93e92819, 0x96a63e9c, 0x976454ab, 0x9522eaf2, 0x94e080c5, - 0x9fbcc7f8, 0x9e7eadcf, 0x9c381396, 0x9dfa79a1, 0x98b56f24, - 0x99770513, 0x9b31bb4a, 0x9af3d17d, 0x8d893530, 0x8c4b5f07, - 0x8e0de15e, 0x8fcf8b69, 0x8a809dec, 0x8b42f7db, 0x89044982, - 0x88c623b5, 0x839a6488, 0x82580ebf, 0x801eb0e6, 0x81dcdad1, - 0x8493cc54, 0x8551a663, 0x8717183a, 0x86d5720d, 0xa9e2d0a0, - 0xa820ba97, 0xaa6604ce, 0xaba46ef9, 0xaeeb787c, 0xaf29124b, - 0xad6fac12, 0xacadc625, 0xa7f18118, 0xa633eb2f, 0xa4755576, - 0xa5b73f41, 0xa0f829c4, 0xa13a43f3, 0xa37cfdaa, 0xa2be979d, - 0xb5c473d0, 0xb40619e7, 0xb640a7be, 0xb782cd89, 0xb2cddb0c, - 0xb30fb13b, 0xb1490f62, 0xb08b6555, 0xbbd72268, 0xba15485f, - 0xb853f606, 0xb9919c31, 0xbcde8ab4, 0xbd1ce083, 0xbf5a5eda, - 0xbe9834ed - }, - { - 0x00000000, 0xb8bc6765, 0xaa09c88b, 0x12b5afee, 0x8f629757, - 0x37def032, 0x256b5fdc, 0x9dd738b9, 0xc5b428ef, 0x7d084f8a, - 0x6fbde064, 0xd7018701, 0x4ad6bfb8, 0xf26ad8dd, 0xe0df7733, - 0x58631056, 0x5019579f, 0xe8a530fa, 0xfa109f14, 0x42acf871, - 0xdf7bc0c8, 0x67c7a7ad, 0x75720843, 0xcdce6f26, 0x95ad7f70, - 0x2d111815, 0x3fa4b7fb, 0x8718d09e, 0x1acfe827, 0xa2738f42, - 0xb0c620ac, 0x087a47c9, 0xa032af3e, 0x188ec85b, 0x0a3b67b5, - 0xb28700d0, 0x2f503869, 0x97ec5f0c, 0x8559f0e2, 0x3de59787, - 0x658687d1, 0xdd3ae0b4, 0xcf8f4f5a, 0x7733283f, 0xeae41086, - 0x525877e3, 0x40edd80d, 0xf851bf68, 0xf02bf8a1, 0x48979fc4, - 0x5a22302a, 0xe29e574f, 0x7f496ff6, 0xc7f50893, 0xd540a77d, - 0x6dfcc018, 0x359fd04e, 0x8d23b72b, 0x9f9618c5, 0x272a7fa0, - 0xbafd4719, 0x0241207c, 0x10f48f92, 0xa848e8f7, 0x9b14583d, - 0x23a83f58, 0x311d90b6, 0x89a1f7d3, 0x1476cf6a, 0xaccaa80f, - 0xbe7f07e1, 0x06c36084, 0x5ea070d2, 0xe61c17b7, 0xf4a9b859, - 0x4c15df3c, 0xd1c2e785, 0x697e80e0, 0x7bcb2f0e, 0xc377486b, - 0xcb0d0fa2, 0x73b168c7, 0x6104c729, 0xd9b8a04c, 0x446f98f5, - 0xfcd3ff90, 0xee66507e, 0x56da371b, 0x0eb9274d, 0xb6054028, - 0xa4b0efc6, 0x1c0c88a3, 0x81dbb01a, 0x3967d77f, 0x2bd27891, - 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0x370953ee, 0x763848f7, 0xb1ae09b8, 0xf09f12a1, 0x33cc3f8a, - 0x72fd2493 - }, - { - 0x00000000, 0x376ac201, 0x6ed48403, 0x59be4602, 0xdca80907, - 0xebc2cb06, 0xb27c8d04, 0x85164f05, 0xb851130e, 0x8f3bd10f, - 0xd685970d, 0xe1ef550c, 0x64f91a09, 0x5393d808, 0x0a2d9e0a, - 0x3d475c0b, 0x70a3261c, 0x47c9e41d, 0x1e77a21f, 0x291d601e, - 0xac0b2f1b, 0x9b61ed1a, 0xc2dfab18, 0xf5b56919, 0xc8f23512, - 0xff98f713, 0xa626b111, 0x914c7310, 0x145a3c15, 0x2330fe14, - 0x7a8eb816, 0x4de47a17, 0xe0464d38, 0xd72c8f39, 0x8e92c93b, - 0xb9f80b3a, 0x3cee443f, 0x0b84863e, 0x523ac03c, 0x6550023d, - 0x58175e36, 0x6f7d9c37, 0x36c3da35, 0x01a91834, 0x84bf5731, - 0xb3d59530, 0xea6bd332, 0xdd011133, 0x90e56b24, 0xa78fa925, - 0xfe31ef27, 0xc95b2d26, 0x4c4d6223, 0x7b27a022, 0x2299e620, - 0x15f32421, 0x28b4782a, 0x1fdeba2b, 0x4660fc29, 0x710a3e28, - 0xf41c712d, 0xc376b32c, 0x9ac8f52e, 0xada2372f, 0xc08d9a70, - 0xf7e75871, 0xae591e73, 0x9933dc72, 0x1c259377, 0x2b4f5176, - 0x72f11774, 0x459bd575, 0x78dc897e, 0x4fb64b7f, 0x16080d7d, - 0x2162cf7c, 0xa4748079, 0x931e4278, 0xcaa0047a, 0xfdcac67b, - 0xb02ebc6c, 0x87447e6d, 0xdefa386f, 0xe990fa6e, 0x6c86b56b, - 0x5bec776a, 0x02523168, 0x3538f369, 0x087faf62, 0x3f156d63, - 0x66ab2b61, 0x51c1e960, 0xd4d7a665, 0xe3bd6464, 0xba032266, - 0x8d69e067, 0x20cbd748, 0x17a11549, 0x4e1f534b, 0x7975914a, - 0xfc63de4f, 0xcb091c4e, 0x92b75a4c, 0xa5dd984d, 0x989ac446, - 0xaff00647, 0xf64e4045, 0xc1248244, 0x4432cd41, 0x73580f40, - 0x2ae64942, 0x1d8c8b43, 0x5068f154, 0x67023355, 0x3ebc7557, - 0x09d6b756, 0x8cc0f853, 0xbbaa3a52, 0xe2147c50, 0xd57ebe51, - 0xe839e25a, 0xdf53205b, 0x86ed6659, 0xb187a458, 0x3491eb5d, - 0x03fb295c, 0x5a456f5e, 0x6d2fad5f, 0x801b35e1, 0xb771f7e0, - 0xeecfb1e2, 0xd9a573e3, 0x5cb33ce6, 0x6bd9fee7, 0x3267b8e5, - 0x050d7ae4, 0x384a26ef, 0x0f20e4ee, 0x569ea2ec, 0x61f460ed, - 0xe4e22fe8, 0xd388ede9, 0x8a36abeb, 0xbd5c69ea, 0xf0b813fd, - 0xc7d2d1fc, 0x9e6c97fe, 0xa90655ff, 0x2c101afa, 0x1b7ad8fb, - 0x42c49ef9, 0x75ae5cf8, 0x48e900f3, 0x7f83c2f2, 0x263d84f0, - 0x115746f1, 0x944109f4, 0xa32bcbf5, 0xfa958df7, 0xcdff4ff6, - 0x605d78d9, 0x5737bad8, 0x0e89fcda, 0x39e33edb, 0xbcf571de, - 0x8b9fb3df, 0xd221f5dd, 0xe54b37dc, 0xd80c6bd7, 0xef66a9d6, - 0xb6d8efd4, 0x81b22dd5, 0x04a462d0, 0x33cea0d1, 0x6a70e6d3, - 0x5d1a24d2, 0x10fe5ec5, 0x27949cc4, 0x7e2adac6, 0x494018c7, - 0xcc5657c2, 0xfb3c95c3, 0xa282d3c1, 0x95e811c0, 0xa8af4dcb, - 0x9fc58fca, 0xc67bc9c8, 0xf1110bc9, 0x740744cc, 0x436d86cd, - 0x1ad3c0cf, 0x2db902ce, 0x4096af91, 0x77fc6d90, 0x2e422b92, - 0x1928e993, 0x9c3ea696, 0xab546497, 0xf2ea2295, 0xc580e094, - 0xf8c7bc9f, 0xcfad7e9e, 0x9613389c, 0xa179fa9d, 0x246fb598, - 0x13057799, 0x4abb319b, 0x7dd1f39a, 0x3035898d, 0x075f4b8c, - 0x5ee10d8e, 0x698bcf8f, 0xec9d808a, 0xdbf7428b, 0x82490489, - 0xb523c688, 0x88649a83, 0xbf0e5882, 0xe6b01e80, 0xd1dadc81, - 0x54cc9384, 0x63a65185, 0x3a181787, 0x0d72d586, 0xa0d0e2a9, - 0x97ba20a8, 0xce0466aa, 0xf96ea4ab, 0x7c78ebae, 0x4b1229af, - 0x12ac6fad, 0x25c6adac, 0x1881f1a7, 0x2feb33a6, 0x765575a4, - 0x413fb7a5, 0xc429f8a0, 0xf3433aa1, 0xaafd7ca3, 0x9d97bea2, - 0xd073c4b5, 0xe71906b4, 0xbea740b6, 0x89cd82b7, 0x0cdbcdb2, - 0x3bb10fb3, 0x620f49b1, 0x55658bb0, 0x6822d7bb, 0x5f4815ba, - 0x06f653b8, 0x319c91b9, 0xb48adebc, 0x83e01cbd, 0xda5e5abf, - 0xed3498be - }, - { - 0x00000000, 0x6567bcb8, 0x8bc809aa, 0xeeafb512, 0x5797628f, - 0x32f0de37, 0xdc5f6b25, 0xb938d79d, 0xef28b4c5, 0x8a4f087d, - 0x64e0bd6f, 0x018701d7, 0xb8bfd64a, 0xddd86af2, 0x3377dfe0, - 0x56106358, 0x9f571950, 0xfa30a5e8, 0x149f10fa, 0x71f8ac42, - 0xc8c07bdf, 0xada7c767, 0x43087275, 0x266fcecd, 0x707fad95, - 0x1518112d, 0xfbb7a43f, 0x9ed01887, 0x27e8cf1a, 0x428f73a2, - 0xac20c6b0, 0xc9477a08, 0x3eaf32a0, 0x5bc88e18, 0xb5673b0a, - 0xd00087b2, 0x6938502f, 0x0c5fec97, 0xe2f05985, 0x8797e53d, - 0xd1878665, 0xb4e03add, 0x5a4f8fcf, 0x3f283377, 0x8610e4ea, - 0xe3775852, 0x0dd8ed40, 0x68bf51f8, 0xa1f82bf0, 0xc49f9748, - 0x2a30225a, 0x4f579ee2, 0xf66f497f, 0x9308f5c7, 0x7da740d5, - 0x18c0fc6d, 0x4ed09f35, 0x2bb7238d, 0xc518969f, 0xa07f2a27, - 0x1947fdba, 0x7c204102, 0x928ff410, 0xf7e848a8, 0x3d58149b, - 0x583fa823, 0xb6901d31, 0xd3f7a189, 0x6acf7614, 0x0fa8caac, - 0xe1077fbe, 0x8460c306, 0xd270a05e, 0xb7171ce6, 0x59b8a9f4, - 0x3cdf154c, 0x85e7c2d1, 0xe0807e69, 0x0e2fcb7b, 0x6b4877c3, - 0xa20f0dcb, 0xc768b173, 0x29c70461, 0x4ca0b8d9, 0xf5986f44, - 0x90ffd3fc, 0x7e5066ee, 0x1b37da56, 0x4d27b90e, 0x284005b6, - 0xc6efb0a4, 0xa3880c1c, 0x1ab0db81, 0x7fd76739, 0x9178d22b, - 0xf41f6e93, 0x03f7263b, 0x66909a83, 0x883f2f91, 0xed589329, - 0x546044b4, 0x3107f80c, 0xdfa84d1e, 0xbacff1a6, 0xecdf92fe, - 0x89b82e46, 0x67179b54, 0x027027ec, 0xbb48f071, 0xde2f4cc9, - 0x3080f9db, 0x55e74563, 0x9ca03f6b, 0xf9c783d3, 0x176836c1, - 0x720f8a79, 0xcb375de4, 0xae50e15c, 0x40ff544e, 0x2598e8f6, - 0x73888bae, 0x16ef3716, 0xf8408204, 0x9d273ebc, 0x241fe921, - 0x41785599, 0xafd7e08b, 0xcab05c33, 0x3bb659ed, 0x5ed1e555, - 0xb07e5047, 0xd519ecff, 0x6c213b62, 0x094687da, 0xe7e932c8, - 0x828e8e70, 0xd49eed28, 0xb1f95190, 0x5f56e482, 0x3a31583a, - 0x83098fa7, 0xe66e331f, 0x08c1860d, 0x6da63ab5, 0xa4e140bd, - 0xc186fc05, 0x2f294917, 0x4a4ef5af, 0xf3762232, 0x96119e8a, - 0x78be2b98, 0x1dd99720, 0x4bc9f478, 0x2eae48c0, 0xc001fdd2, - 0xa566416a, 0x1c5e96f7, 0x79392a4f, 0x97969f5d, 0xf2f123e5, - 0x05196b4d, 0x607ed7f5, 0x8ed162e7, 0xebb6de5f, 0x528e09c2, - 0x37e9b57a, 0xd9460068, 0xbc21bcd0, 0xea31df88, 0x8f566330, - 0x61f9d622, 0x049e6a9a, 0xbda6bd07, 0xd8c101bf, 0x366eb4ad, - 0x53090815, 0x9a4e721d, 0xff29cea5, 0x11867bb7, 0x74e1c70f, - 0xcdd91092, 0xa8beac2a, 0x46111938, 0x2376a580, 0x7566c6d8, - 0x10017a60, 0xfeaecf72, 0x9bc973ca, 0x22f1a457, 0x479618ef, - 0xa939adfd, 0xcc5e1145, 0x06ee4d76, 0x6389f1ce, 0x8d2644dc, - 0xe841f864, 0x51792ff9, 0x341e9341, 0xdab12653, 0xbfd69aeb, - 0xe9c6f9b3, 0x8ca1450b, 0x620ef019, 0x07694ca1, 0xbe519b3c, - 0xdb362784, 0x35999296, 0x50fe2e2e, 0x99b95426, 0xfcdee89e, - 0x12715d8c, 0x7716e134, 0xce2e36a9, 0xab498a11, 0x45e63f03, - 0x208183bb, 0x7691e0e3, 0x13f65c5b, 0xfd59e949, 0x983e55f1, - 0x2106826c, 0x44613ed4, 0xaace8bc6, 0xcfa9377e, 0x38417fd6, - 0x5d26c36e, 0xb389767c, 0xd6eecac4, 0x6fd61d59, 0x0ab1a1e1, - 0xe41e14f3, 0x8179a84b, 0xd769cb13, 0xb20e77ab, 0x5ca1c2b9, - 0x39c67e01, 0x80fea99c, 0xe5991524, 0x0b36a036, 0x6e511c8e, - 0xa7166686, 0xc271da3e, 0x2cde6f2c, 0x49b9d394, 0xf0810409, - 0x95e6b8b1, 0x7b490da3, 0x1e2eb11b, 0x483ed243, 0x2d596efb, - 0xc3f6dbe9, 0xa6916751, 0x1fa9b0cc, 0x7ace0c74, 0x9461b966, - 0xf10605de - } -}; - -static const uint32_t crc_comb[32][32] = -{ - { - 0x77073096UL, 0xee0e612cUL, 0x076dc419UL, 0x0edb8832UL, 0x1db71064UL, - 0x3b6e20c8UL, 0x76dc4190UL, 0xedb88320UL, 0x00000001UL, 0x00000002UL, - 0x00000004UL, 0x00000008UL, 0x00000010UL, 0x00000020UL, 0x00000040UL, - 0x00000080UL, 0x00000100UL, 0x00000200UL, 0x00000400UL, 0x00000800UL, - 0x00001000UL, 0x00002000UL, 0x00004000UL, 0x00008000UL, 0x00010000UL, - 0x00020000UL, 0x00040000UL, 0x00080000UL, 0x00100000UL, 0x00200000UL, - 0x00400000UL, 0x00800000UL - }, - { - 0x191b3141UL, 0x32366282UL, 0x646cc504UL, 0xc8d98a08UL, 0x4ac21251UL, - 0x958424a2UL, 0xf0794f05UL, 0x3b83984bUL, 0x77073096UL, 0xee0e612cUL, - 0x076dc419UL, 0x0edb8832UL, 0x1db71064UL, 0x3b6e20c8UL, 0x76dc4190UL, - 0xedb88320UL, 0x00000001UL, 0x00000002UL, 0x00000004UL, 0x00000008UL, - 0x00000010UL, 0x00000020UL, 0x00000040UL, 0x00000080UL, 0x00000100UL, - 0x00000200UL, 0x00000400UL, 0x00000800UL, 0x00001000UL, 0x00002000UL, - 0x00004000UL, 0x00008000UL - }, - { - 0xb8bc6765UL, 0xaa09c88bUL, 0x8f629757UL, 0xc5b428efUL, 0x5019579fUL, - 0xa032af3eUL, 0x9b14583dUL, 0xed59b63bUL, 0x01c26a37UL, 0x0384d46eUL, - 0x0709a8dcUL, 0x0e1351b8UL, 0x1c26a370UL, 0x384d46e0UL, 0x709a8dc0UL, - 0xe1351b80UL, 0x191b3141UL, 0x32366282UL, 0x646cc504UL, 0xc8d98a08UL, - 0x4ac21251UL, 0x958424a2UL, 0xf0794f05UL, 0x3b83984bUL, 0x77073096UL, - 0xee0e612cUL, 0x076dc419UL, 0x0edb8832UL, 0x1db71064UL, 0x3b6e20c8UL, - 0x76dc4190UL, 0xedb88320UL - }, - { - 0xccaa009eUL, 0x4225077dUL, 0x844a0efaUL, 0xd3e51bb5UL, 0x7cbb312bUL, - 0xf9766256UL, 0x299dc2edUL, 0x533b85daUL, 0xa6770bb4UL, 0x979f1129UL, - 0xf44f2413UL, 0x33ef4e67UL, 0x67de9cceUL, 0xcfbd399cUL, 0x440b7579UL, - 0x8816eaf2UL, 0xcb5cd3a5UL, 0x4dc8a10bUL, 0x9b914216UL, 0xec53826dUL, - 0x03d6029bUL, 0x07ac0536UL, 0x0f580a6cUL, 0x1eb014d8UL, 0x3d6029b0UL, - 0x7ac05360UL, 0xf580a6c0UL, 0x30704bc1UL, 0x60e09782UL, 0xc1c12f04UL, - 0x58f35849UL, 0xb1e6b092UL - }, - { - 0xae689191UL, 0x87a02563UL, 0xd4314c87UL, 0x73139f4fUL, 0xe6273e9eUL, - 0x173f7b7dUL, 0x2e7ef6faUL, 0x5cfdedf4UL, 0xb9fbdbe8UL, 0xa886b191UL, - 0x8a7c6563UL, 0xcf89cc87UL, 0x44629f4fUL, 0x88c53e9eUL, 0xcafb7b7dUL, - 0x4e87f0bbUL, 0x9d0fe176UL, 0xe16ec4adUL, 0x19ac8f1bUL, 0x33591e36UL, - 0x66b23c6cUL, 0xcd6478d8UL, 0x41b9f7f1UL, 0x8373efe2UL, 0xdd96d985UL, - 0x605cb54bUL, 0xc0b96a96UL, 0x5a03d36dUL, 0xb407a6daUL, 0xb37e4bf5UL, - 0xbd8d91abUL, 0xa06a2517UL - }, - { - 0xf1da05aaUL, 0x38c50d15UL, 0x718a1a2aUL, 0xe3143454UL, 0x1d596ee9UL, - 0x3ab2ddd2UL, 0x7565bba4UL, 0xeacb7748UL, 0x0ee7e8d1UL, 0x1dcfd1a2UL, - 0x3b9fa344UL, 0x773f4688UL, 0xee7e8d10UL, 0x078c1c61UL, 0x0f1838c2UL, - 0x1e307184UL, 0x3c60e308UL, 0x78c1c610UL, 0xf1838c20UL, 0x38761e01UL, - 0x70ec3c02UL, 0xe1d87804UL, 0x18c1f649UL, 0x3183ec92UL, 0x6307d924UL, - 0xc60fb248UL, 0x576e62d1UL, 0xaedcc5a2UL, 0x86c88d05UL, 0xd6e01c4bUL, - 0x76b13ed7UL, 0xed627daeUL - }, - { - 0x8f352d95UL, 0xc51b5d6bUL, 0x5147bc97UL, 0xa28f792eUL, 0x9e6ff41dUL, - 0xe7aeee7bUL, 0x142cdab7UL, 0x2859b56eUL, 0x50b36adcUL, 0xa166d5b8UL, - 0x99bcad31UL, 0xe8085c23UL, 0x0b61be07UL, 0x16c37c0eUL, 0x2d86f81cUL, - 0x5b0df038UL, 0xb61be070UL, 0xb746c6a1UL, 0xb5fc8b03UL, 0xb0881047UL, - 0xba6126cfUL, 0xafb34bdfUL, 0x841791ffUL, 0xd35e25bfUL, 0x7dcd4d3fUL, - 0xfb9a9a7eUL, 0x2c4432bdUL, 0x5888657aUL, 0xb110caf4UL, 0xb95093a9UL, - 0xa9d02113UL, 0x88d14467UL - }, - { - 0x33fff533UL, 0x67ffea66UL, 0xcfffd4ccUL, 0x448eafd9UL, 0x891d5fb2UL, - 0xc94bb925UL, 0x49e6740bUL, 0x93cce816UL, 0xfce8d66dUL, 0x22a0aa9bUL, - 0x45415536UL, 0x8a82aa6cUL, 0xce745299UL, 0x4799a373UL, 0x8f3346e6UL, - 0xc5178b8dUL, 0x515e115bUL, 0xa2bc22b6UL, 0x9e09432dUL, 0xe763801bUL, - 0x15b60677UL, 0x2b6c0ceeUL, 0x56d819dcUL, 0xadb033b8UL, 0x80116131UL, - 0xdb53c423UL, 0x6dd68e07UL, 0xdbad1c0eUL, 0x6c2b3e5dUL, 0xd8567cbaUL, - 0x6bddff35UL, 0xd7bbfe6aUL - }, - { - 0xce3371cbUL, 0x4717e5d7UL, 0x8e2fcbaeUL, 0xc72e911dUL, 0x552c247bUL, - 0xaa5848f6UL, 0x8fc197adUL, 0xc4f2291bUL, 0x52955477UL, 0xa52aa8eeUL, - 0x9124579dUL, 0xf939a97bUL, 0x290254b7UL, 0x5204a96eUL, 0xa40952dcUL, - 0x9363a3f9UL, 0xfdb641b3UL, 0x201d8527UL, 0x403b0a4eUL, 0x8076149cUL, - 0xdb9d2f79UL, 0x6c4b58b3UL, 0xd896b166UL, 0x6a5c648dUL, 0xd4b8c91aUL, - 0x72009475UL, 0xe40128eaUL, 0x13735795UL, 0x26e6af2aUL, 0x4dcd5e54UL, - 0x9b9abca8UL, 0xec447f11UL - }, - { - 0x1072db28UL, 0x20e5b650UL, 0x41cb6ca0UL, 0x8396d940UL, 0xdc5cb4c1UL, - 0x63c86fc3UL, 0xc790df86UL, 0x5450b94dUL, 0xa8a1729aUL, 0x8a33e375UL, - 0xcf16c0abUL, 0x455c8717UL, 0x8ab90e2eUL, 0xce031a1dUL, 0x4777327bUL, - 0x8eee64f6UL, 0xc6adcfadUL, 0x562a991bUL, 0xac553236UL, 0x83db622dUL, - 0xdcc7c21bUL, 0x62fe8277UL, 0xc5fd04eeUL, 0x508b0f9dUL, 0xa1161f3aUL, - 0x995d3835UL, 0xe9cb762bUL, 0x08e7ea17UL, 0x11cfd42eUL, 0x239fa85cUL, - 0x473f50b8UL, 0x8e7ea170UL - }, - { - 0xf891f16fUL, 0x2a52e49fUL, 0x54a5c93eUL, 0xa94b927cUL, 0x89e622b9UL, - 0xc8bd4333UL, 0x4a0b8027UL, 0x9417004eUL, 0xf35f06ddUL, 0x3dcf0bfbUL, - 0x7b9e17f6UL, 0xf73c2fecUL, 0x35095999UL, 0x6a12b332UL, 0xd4256664UL, - 0x733bca89UL, 0xe6779512UL, 0x179e2c65UL, 0x2f3c58caUL, 0x5e78b194UL, - 0xbcf16328UL, 0xa293c011UL, 0x9e568663UL, 0xe7dc0a87UL, 0x14c9134fUL, - 0x2992269eUL, 0x53244d3cUL, 0xa6489a78UL, 0x97e032b1UL, 0xf4b16323UL, - 0x3213c007UL, 0x6427800eUL - }, - { - 0x88b6ba63UL, 0xca1c7287UL, 0x4f49e34fUL, 0x9e93c69eUL, 0xe6568b7dUL, - 0x17dc10bbUL, 0x2fb82176UL, 0x5f7042ecUL, 0xbee085d8UL, 0xa6b00df1UL, - 0x96111da3UL, 0xf7533d07UL, 0x35d77c4fUL, 0x6baef89eUL, 0xd75df13cUL, - 0x75cae439UL, 0xeb95c872UL, 0x0c5a96a5UL, 0x18b52d4aUL, 0x316a5a94UL, - 0x62d4b528UL, 0xc5a96a50UL, 0x5023d2e1UL, 0xa047a5c2UL, 0x9bfe4dc5UL, - 0xec8d9dcbUL, 0x026a3dd7UL, 0x04d47baeUL, 0x09a8f75cUL, 0x1351eeb8UL, - 0x26a3dd70UL, 0x4d47bae0UL - }, - { - 0x5ad8a92cUL, 0xb5b15258UL, 0xb013a2f1UL, 0xbb5643a3UL, 0xaddd8107UL, - 0x80ca044fUL, 0xdae50edfUL, 0x6ebb1bffUL, 0xdd7637feUL, 0x619d69bdUL, - 0xc33ad37aUL, 0x5d04a0b5UL, 0xba09416aUL, 0xaf638495UL, 0x85b60f6bUL, - 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0xf6aed37fUL, 0x362ca0bfUL, 0x6c59417eUL, 0xd8b282fcUL, 0x6a1403b9UL, - 0xd4280772UL, 0x732108a5UL, 0xe642114aUL, 0x17f524d5UL, 0x2fea49aaUL, - 0x5fd49354UL, 0xbfa926a8UL, 0xa4234b11UL, 0x93379063UL, 0xfd1e2687UL, - 0x214d4b4fUL, 0x429a969eUL - }, - { - 0xfe273162UL, 0x273f6485UL, 0x4e7ec90aUL, 0x9cfd9214UL, 0xe28a2269UL, - 0x1e654293UL, 0x3cca8526UL, 0x79950a4cUL, 0xf32a1498UL, 0x3d252f71UL, - 0x7a4a5ee2UL, 0xf494bdc4UL, 0x32587dc9UL, 0x64b0fb92UL, 0xc961f724UL, - 0x49b2e809UL, 0x9365d012UL, 0xfdbaa665UL, 0x20044a8bUL, 0x40089516UL, - 0x80112a2cUL, 0xdb535219UL, 0x6dd7a273UL, 0xdbaf44e6UL, 0x6c2f8f8dUL, - 0xd85f1f1aUL, 0x6bcf3875UL, 0xd79e70eaUL, 0x744de795UL, 0xe89bcf2aUL, - 0x0a469815UL, 0x148d302aUL - }, - { - 0xd3c98813UL, 0x7ce21667UL, 0xf9c42cceUL, 0x28f95fddUL, 0x51f2bfbaUL, - 0xa3e57f74UL, 0x9cbbf8a9UL, 0xe206f713UL, 0x1f7ce867UL, 0x3ef9d0ceUL, - 0x7df3a19cUL, 0xfbe74338UL, 0x2cbf8031UL, 0x597f0062UL, 0xb2fe00c4UL, - 0xbe8d07c9UL, 0xa66b09d3UL, 0x97a715e7UL, 0xf43f2d8fUL, 0x330f5d5fUL, - 0x661ebabeUL, 0xcc3d757cUL, 0x430becb9UL, 0x8617d972UL, 0xd75eb4a5UL, - 0x75cc6f0bUL, 0xeb98de16UL, 0x0c40ba6dUL, 0x188174daUL, 0x3102e9b4UL, - 0x6205d368UL, 0xc40ba6d0UL - }, - { - 0xf7d6deb4UL, 0x34dcbb29UL, 0x69b97652UL, 0xd372eca4UL, 0x7d94df09UL, - 0xfb29be12UL, 0x2d227a65UL, 0x5a44f4caUL, 0xb489e994UL, 0xb262d569UL, - 0xbfb4ac93UL, 0xa4185f67UL, 0x9341b88fUL, 0xfdf2775fUL, 0x2095e8ffUL, - 0x412bd1feUL, 0x8257a3fcUL, 0xdfde41b9UL, 0x64cd8533UL, 0xc99b0a66UL, - 0x4847128dUL, 0x908e251aUL, 0xfa6d4c75UL, 0x2fab9eabUL, 0x5f573d56UL, - 0xbeae7aacUL, 0xa62df319UL, 0x972ae073UL, 0xf524c6a7UL, 0x31388b0fUL, - 0x6271161eUL, 0xc4e22c3cUL - }, - { - 0xedb88320UL, 0x00000001UL, 0x00000002UL, 0x00000004UL, 0x00000008UL, - 0x00000010UL, 0x00000020UL, 0x00000040UL, 0x00000080UL, 0x00000100UL, - 0x00000200UL, 0x00000400UL, 0x00000800UL, 0x00001000UL, 0x00002000UL, - 0x00004000UL, 0x00008000UL, 0x00010000UL, 0x00020000UL, 0x00040000UL, - 0x00080000UL, 0x00100000UL, 0x00200000UL, 0x00400000UL, 0x00800000UL, - 0x01000000UL, 0x02000000UL, 0x04000000UL, 0x08000000UL, 0x10000000UL, - 0x20000000UL, 0x40000000UL - }, - { - 0x76dc4190UL, 0xedb88320UL, 0x00000001UL, 0x00000002UL, 0x00000004UL, - 0x00000008UL, 0x00000010UL, 0x00000020UL, 0x00000040UL, 0x00000080UL, - 0x00000100UL, 0x00000200UL, 0x00000400UL, 0x00000800UL, 0x00001000UL, - 0x00002000UL, 0x00004000UL, 0x00008000UL, 0x00010000UL, 0x00020000UL, - 0x00040000UL, 0x00080000UL, 0x00100000UL, 0x00200000UL, 0x00400000UL, - 0x00800000UL, 0x01000000UL, 0x02000000UL, 0x04000000UL, 0x08000000UL, - 0x10000000UL, 0x20000000UL - }, - { - 0x1db71064UL, 0x3b6e20c8UL, 0x76dc4190UL, 0xedb88320UL, 0x00000001UL, - 0x00000002UL, 0x00000004UL, 0x00000008UL, 0x00000010UL, 0x00000020UL, - 0x00000040UL, 0x00000080UL, 0x00000100UL, 0x00000200UL, 0x00000400UL, - 0x00000800UL, 0x00001000UL, 0x00002000UL, 0x00004000UL, 0x00008000UL, - 0x00010000UL, 0x00020000UL, 0x00040000UL, 0x00080000UL, 0x00100000UL, - 0x00200000UL, 0x00400000UL, 0x00800000UL, 0x01000000UL, 0x02000000UL, - 0x04000000UL, 0x08000000UL - } -}; -#endif /* CRC32_H_ */ diff --git a/libs/zlibng/deflate.c b/libs/zlibng/deflate.c deleted file mode 100644 index dd4edff0e..000000000 --- a/libs/zlibng/deflate.c +++ /dev/null @@ -1,1712 +0,0 @@ -/* deflate.c -- compress data using the deflation algorithm - * Copyright (C) 1995-2016 Jean-loup Gailly and Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* - * ALGORITHM - * - * The "deflation" process depends on being able to identify portions - * of the input text which are identical to earlier input (within a - * sliding window trailing behind the input currently being processed). - * - * The most straightforward technique turns out to be the fastest for - * most input files: try all possible matches and select the longest. - * The key feature of this algorithm is that insertions into the string - * dictionary are very simple and thus fast, and deletions are avoided - * completely. Insertions are performed at each input character, whereas - * string matches are performed only when the previous match ends. So it - * is preferable to spend more time in matches to allow very fast string - * insertions and avoid deletions. The matching algorithm for small - * strings is inspired from that of Rabin & Karp. A brute force approach - * is used to find longer strings when a small match has been found. - * A similar algorithm is used in comic (by Jan-Mark Wams) and freeze - * (by Leonid Broukhis). - * A previous version of this file used a more sophisticated algorithm - * (by Fiala and Greene) which is guaranteed to run in linear amortized - * time, but has a larger average cost, uses more memory and is patented. - * However the F&G algorithm may be faster for some highly redundant - * files if the parameter max_chain_length (described below) is too large. - * - * ACKNOWLEDGEMENTS - * - * The idea of lazy evaluation of matches is due to Jan-Mark Wams, and - * I found it in 'freeze' written by Leonid Broukhis. - * Thanks to many people for bug reports and testing. - * - * REFERENCES - * - * Deutsch, L.P.,"DEFLATE Compressed Data Format Specification". - * Available in http://tools.ietf.org/html/rfc1951 - * - * A description of the Rabin and Karp algorithm is given in the book - * "Algorithms" by R. Sedgewick, Addison-Wesley, p252. - * - * Fiala,E.R., and Greene,D.H. - * Data Compression with Finite Windows, Comm.ACM, 32,4 (1989) 490-595 - * - */ - -/* @(#) $Id$ */ - -#include "zbuild.h" -#include "deflate.h" -#include "deflate_p.h" -#include "match_p.h" -#include "functable.h" - -const char deflate_copyright[] = " deflate 1.2.11.f Copyright 1995-2016 Jean-loup Gailly and Mark Adler "; -/* - If you use the zlib library in a product, an acknowledgment is welcome - in the documentation of your product. If for some reason you cannot - include such an acknowledgment, I would appreciate that you keep this - copyright string in the executable of your product. - */ - -/* =========================================================================== - * Architecture-specific hooks. - */ -#ifdef S390_DFLTCC_DEFLATE -# include "arch/s390/dfltcc_deflate.h" -#else -/* Memory management for the deflate state. Useful for allocating arch-specific extension blocks. */ -# define ZALLOC_STATE(strm, items, size) ZALLOC(strm, items, size) -# define ZFREE_STATE(strm, addr) ZFREE(strm, addr) -# define ZCOPY_STATE(dst, src, size) memcpy(dst, src, size) -/* Memory management for the window. Useful for allocation the aligned window. */ -# define ZALLOC_WINDOW(strm, items, size) ZALLOC(strm, items, size) -# define TRY_FREE_WINDOW(strm, addr) TRY_FREE(strm, addr) -/* Invoked at the beginning of deflateSetDictionary(). Useful for checking arch-specific window data. */ -# define DEFLATE_SET_DICTIONARY_HOOK(strm, dict, dict_len) do {} while (0) -/* Invoked at the beginning of deflateGetDictionary(). Useful for adjusting arch-specific window data. */ -# define DEFLATE_GET_DICTIONARY_HOOK(strm, dict, dict_len) do {} while (0) -/* Invoked at the end of deflateResetKeep(). Useful for initializing arch-specific extension blocks. */ -# define DEFLATE_RESET_KEEP_HOOK(strm) do {} while (0) -/* Invoked at the beginning of deflateParams(). Useful for updating arch-specific compression parameters. */ -# define DEFLATE_PARAMS_HOOK(strm, level, strategy) do {} while (0) -/* Adjusts the upper bound on compressed data length based on compression parameters and uncompressed data length. - * Useful when arch-specific deflation code behaves differently than regular zlib-ng algorithms. */ -# define DEFLATE_BOUND_ADJUST_COMPLEN(strm, complen, sourceLen) do {} while (0) -/* Returns whether an optimistic upper bound on compressed data length should *not* be used. - * Useful when arch-specific deflation code behaves differently than regular zlib-ng algorithms. */ -# define DEFLATE_NEED_CONSERVATIVE_BOUND(strm) 0 -/* Invoked for each deflate() call. Useful for plugging arch-specific deflation code. */ -# define DEFLATE_HOOK(strm, flush, bstate) 0 -/* Returns whether zlib-ng should compute a checksum. Set to 0 if arch-specific deflation code already does that. */ -# define DEFLATE_NEED_CHECKSUM(strm) 1 -#endif - -/* =========================================================================== - * Function prototypes. - */ -typedef block_state (*compress_func) (deflate_state *s, int flush); -/* Compression function. Returns the block state after the call. */ - -static int deflateStateCheck (PREFIX3(stream) *strm); -static void slide_hash (deflate_state *s); -static block_state deflate_stored (deflate_state *s, int flush); -ZLIB_INTERNAL block_state deflate_fast (deflate_state *s, int flush); -ZLIB_INTERNAL block_state deflate_quick (deflate_state *s, int flush); -#ifndef NO_MEDIUM_STRATEGY -ZLIB_INTERNAL block_state deflate_medium (deflate_state *s, int flush); -#endif -ZLIB_INTERNAL block_state deflate_slow (deflate_state *s, int flush); -static block_state deflate_rle (deflate_state *s, int flush); -static block_state deflate_huff (deflate_state *s, int flush); -static void lm_init (deflate_state *s); -static void putShortMSB (deflate_state *s, uint16_t b); -ZLIB_INTERNAL unsigned read_buf (PREFIX3(stream) *strm, unsigned char *buf, unsigned size); - -extern void crc_reset(deflate_state *const s); -#ifdef X86_PCLMULQDQ_CRC -extern void crc_finalize(deflate_state *const s); -#endif -extern void copy_with_crc(PREFIX3(stream) *strm, unsigned char *dst, unsigned long size); - -/* =========================================================================== - * Local data - */ - -#define NIL 0 -/* Tail of hash chains */ - -/* Values for max_lazy_match, good_match and max_chain_length, depending on - * the desired pack level (0..9). The values given below have been tuned to - * exclude worst case performance for pathological files. Better values may be - * found for specific files. - */ -typedef struct config_s { - uint16_t good_length; /* reduce lazy search above this match length */ - uint16_t max_lazy; /* do not perform lazy search above this match length */ - uint16_t nice_length; /* quit search above this match length */ - uint16_t max_chain; - compress_func func; -} config; - -static const config configuration_table[10] = { -/* good lazy nice chain */ -/* 0 */ {0, 0, 0, 0, deflate_stored}, /* store only */ - -#ifdef X86_QUICK_STRATEGY -/* 1 */ {4, 4, 8, 4, deflate_quick}, -/* 2 */ {4, 4, 8, 4, deflate_fast}, /* max speed, no lazy matches */ -#else -/* 1 */ {4, 4, 8, 4, deflate_fast}, /* max speed, no lazy matches */ -/* 2 */ {4, 5, 16, 8, deflate_fast}, -#endif - -/* 3 */ {4, 6, 32, 32, deflate_fast}, - -#ifdef NO_MEDIUM_STRATEGY -/* 4 */ {4, 4, 16, 16, deflate_slow}, /* lazy matches */ -/* 5 */ {8, 16, 32, 32, deflate_slow}, -/* 6 */ {8, 16, 128, 128, deflate_slow}, -#else -/* 4 */ {4, 4, 16, 16, deflate_medium}, /* lazy matches */ -/* 5 */ {8, 16, 32, 32, deflate_medium}, -/* 6 */ {8, 16, 128, 128, deflate_medium}, -#endif - -/* 7 */ {8, 32, 128, 256, deflate_slow}, -/* 8 */ {32, 128, 258, 1024, deflate_slow}, -/* 9 */ {32, 258, 258, 4096, deflate_slow}}; /* max compression */ - -/* Note: the deflate() code requires max_lazy >= MIN_MATCH and max_chain >= 4 - * For deflate_fast() (levels <= 3) good is ignored and lazy has a different - * meaning. - */ - -/* rank Z_BLOCK between Z_NO_FLUSH and Z_PARTIAL_FLUSH */ -#define RANK(f) (((f) * 2) - ((f) > 4 ? 9 : 0)) - - -/* =========================================================================== - * Initialize the hash table (avoiding 64K overflow for 16 bit systems). - * prev[] will be initialized on the fly. - */ -#define CLEAR_HASH(s) do { \ - s->head[s->hash_size - 1] = NIL; \ - memset((unsigned char *)s->head, 0, (unsigned)(s->hash_size - 1) * sizeof(*s->head)); \ - } while (0) - -/* =========================================================================== - * Slide the hash table when sliding the window down (could be avoided with 32 - * bit values at the expense of memory usage). We slide even when level == 0 to - * keep the hash table consistent if we switch back to level > 0 later. - */ -static void slide_hash(deflate_state *s) { - unsigned n; - Pos *p; - unsigned int wsize = s->w_size; - - n = s->hash_size; - p = &s->head[n]; -#ifdef NOT_TWEAK_COMPILER - do { - unsigned m; - m = *--p; - *p = (Pos)(m >= wsize ? m-wsize : NIL); - } while (--n); -#else - /* As of I make this change, gcc (4.8.*) isn't able to vectorize - * this hot loop using saturated-subtraction on x86-64 architecture. - * To avoid this defect, we can change the loop such that - * o. the pointer advance forward, and - * o. demote the variable 'm' to be local to the loop, and - * choose type "Pos" (instead of 'unsigned int') for the - * variable to avoid unncessary zero-extension. - */ - { - unsigned int i; - Pos *q = p - n; - for (i = 0; i < n; i++) { - Pos m = *q; - Pos t = wsize; - *q++ = (Pos)(m >= t ? m-t: NIL); - } - } - -#endif /* NOT_TWEAK_COMPILER */ - n = wsize; - p = &s->prev[n]; -#ifdef NOT_TWEAK_COMPILER - do { - unsigned m; - m = *--p; - *p = (Pos)(m >= wsize ? m-wsize : NIL); - /* If n is not on any hash chain, prev[n] is garbage but - * its value will never be used. - */ - } while (--n); -#else - { - unsigned int i; - Pos *q = p - n; - for (i = 0; i < n; i++) { - Pos m = *q; - Pos t = wsize; - *q++ = (Pos)(m >= t ? m-t: NIL); - } - } -#endif /* NOT_TWEAK_COMPILER */ -} - -/* ========================================================================= */ -int ZEXPORT PREFIX(deflateInit_)(PREFIX3(stream) *strm, int level, const char *version, int stream_size) { - return PREFIX(deflateInit2_)(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY, version, stream_size); - /* Todo: ignore strm->next_in if we use it as window */ -} - -/* ========================================================================= */ -int ZEXPORT PREFIX(deflateInit2_)(PREFIX3(stream) *strm, int level, int method, int windowBits, - int memLevel, int strategy, const char *version, int stream_size) { - unsigned window_padding = 0; - deflate_state *s; - int wrap = 1; - static const char my_version[] = PREFIX2(VERSION); - -#ifdef X86_CPUID - x86_check_features(); -#elif defined(__arm__) || defined(__aarch64__) || defined(_M_ARM) - arm_check_features(); -#endif - - if (version == NULL || version[0] != my_version[0] || stream_size != sizeof(PREFIX3(stream))) { - return Z_VERSION_ERROR; - } - if (strm == NULL) - return Z_STREAM_ERROR; - - strm->msg = NULL; - if (strm->zalloc == NULL) { - strm->zalloc = zcalloc; - strm->opaque = NULL; - } - if (strm->zfree == NULL) - strm->zfree = zcfree; - - if (level == Z_DEFAULT_COMPRESSION) - level = 6; - - if (windowBits < 0) { /* suppress zlib wrapper */ - wrap = 0; - windowBits = -windowBits; -#ifdef GZIP - } else if (windowBits > 15) { - wrap = 2; /* write gzip wrapper instead */ - windowBits -= 16; -#endif - } - if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method != Z_DEFLATED || windowBits < 8 || - windowBits > 15 || level < 0 || level > 9 || strategy < 0 || strategy > Z_FIXED || - (windowBits == 8 && wrap != 1)) { - return Z_STREAM_ERROR; - } - if (windowBits == 8) - windowBits = 9; /* until 256-byte window bug fixed */ - -#ifdef X86_QUICK_STRATEGY - if (level == 1) - windowBits = 13; -#endif - - s = (deflate_state *) ZALLOC_STATE(strm, 1, sizeof(deflate_state)); - if (s == NULL) - return Z_MEM_ERROR; - strm->state = (struct internal_state *)s; - s->strm = strm; - s->status = INIT_STATE; /* to pass state test in deflateReset() */ - - s->wrap = wrap; - s->gzhead = NULL; - s->w_bits = (unsigned int)windowBits; - s->w_size = 1 << s->w_bits; - s->w_mask = s->w_size - 1; - -#ifdef X86_SSE4_2_CRC_HASH - if (x86_cpu_has_sse42) - s->hash_bits = (unsigned int)15; - else -#endif - s->hash_bits = (unsigned int)memLevel + 7; - - s->hash_size = 1 << s->hash_bits; - s->hash_mask = s->hash_size - 1; -#if !defined(__x86_64__) && !defined(_M_X64) && !defined(__i386) && !defined(_M_IX86) - s->hash_shift = ((s->hash_bits+MIN_MATCH-1)/MIN_MATCH); -#endif - -#ifdef X86_PCLMULQDQ_CRC - window_padding = 8; -#endif - - s->window = (unsigned char *) ZALLOC_WINDOW(strm, s->w_size + window_padding, 2*sizeof(unsigned char)); - s->prev = (Pos *) ZALLOC(strm, s->w_size, sizeof(Pos)); - memset(s->prev, 0, s->w_size * sizeof(Pos)); - s->head = (Pos *) ZALLOC(strm, s->hash_size, sizeof(Pos)); - - s->high_water = 0; /* nothing written to s->window yet */ - - s->lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */ - - /* We overlay pending_buf and sym_buf. This works since the average size - * for length/distance pairs over any compressed block is assured to be 31 - * bits or less. - * - * Analysis: The longest fixed codes are a length code of 8 bits plus 5 - * extra bits, for lengths 131 to 257. The longest fixed distance codes are - * 5 bits plus 13 extra bits, for distances 16385 to 32768. The longest - * possible fixed-codes length/distance pair is then 31 bits total. - * - * sym_buf starts one-fourth of the way into pending_buf. So there are - * three bytes in sym_buf for every four bytes in pending_buf. Each symbol - * in sym_buf is three bytes -- two for the distance and one for the - * literal/length. As each symbol is consumed, the pointer to the next - * sym_buf value to read moves forward three bytes. From that symbol, up to - * 31 bits are written to pending_buf. The closest the written pending_buf - * bits gets to the next sym_buf symbol to read is just before the last - * code is written. At that time, 31*(n-2) bits have been written, just - * after 24*(n-2) bits have been consumed from sym_buf. sym_buf starts at - * 8*n bits into pending_buf. (Note that the symbol buffer fills when n-1 - * symbols are written.) The closest the writing gets to what is unread is - * then n+14 bits. Here n is lit_bufsize, which is 16384 by default, and - * can range from 128 to 32768. - * - * Therefore, at a minimum, there are 142 bits of space between what is - * written and what is read in the overlain buffers, so the symbols cannot - * be overwritten by the compressed data. That space is actually 139 bits, - * due to the three-bit fixed-code block header. - * - * That covers the case where either Z_FIXED is specified, forcing fixed - * codes, or when the use of fixed codes is chosen, because that choice - * results in a smaller compressed block than dynamic codes. That latter - * condition then assures that the above analysis also covers all dynamic - * blocks. A dynamic-code block will only be chosen to be emitted if it has - * fewer bits than a fixed-code block would for the same set of symbols. - * Therefore its average symbol length is assured to be less than 31. So - * the compressed data for a dynamic block also cannot overwrite the - * symbols from which it is being constructed. - */ - - s->pending_buf = (unsigned char *) ZALLOC(strm, s->lit_bufsize, 4); - s->pending_buf_size = (unsigned long)s->lit_bufsize * 4; - - if (s->window == NULL || s->prev == NULL || s->head == NULL || - s->pending_buf == NULL) { - s->status = FINISH_STATE; - strm->msg = ERR_MSG(Z_MEM_ERROR); - PREFIX(deflateEnd)(strm); - return Z_MEM_ERROR; - } - s->sym_buf = s->pending_buf + s->lit_bufsize; - s->sym_end = (s->lit_bufsize - 1) * 3; - /* We avoid equality with lit_bufsize*3 because of wraparound at 64K - * on 16 bit machines and because stored blocks are restricted to - * 64K-1 bytes. - */ - - s->level = level; - s->strategy = strategy; - s->method = (unsigned char)method; - s->block_open = 0; - - return PREFIX(deflateReset)(strm); -} - -/* ========================================================================= - * Check for a valid deflate stream state. Return 0 if ok, 1 if not. - */ -static int deflateStateCheck (PREFIX3(stream) *strm) { - deflate_state *s; - if (strm == NULL || - strm->zalloc == (alloc_func)0 || strm->zfree == (free_func)0) - return 1; - s = strm->state; - if (s == NULL || s->strm != strm || (s->status != INIT_STATE && -#ifdef GZIP - s->status != GZIP_STATE && -#endif - s->status != EXTRA_STATE && - s->status != NAME_STATE && - s->status != COMMENT_STATE && - s->status != HCRC_STATE && - s->status != BUSY_STATE && - s->status != FINISH_STATE)) - return 1; - return 0; -} - -/* ========================================================================= */ -int ZEXPORT PREFIX(deflateSetDictionary)(PREFIX3(stream) *strm, const unsigned char *dictionary, unsigned int dictLength) { - deflate_state *s; - unsigned int str, n; - int wrap; - uint32_t avail; - const unsigned char *next; - - if (deflateStateCheck(strm) || dictionary == NULL) - return Z_STREAM_ERROR; - s = strm->state; - wrap = s->wrap; - if (wrap == 2 || (wrap == 1 && s->status != INIT_STATE) || s->lookahead) - return Z_STREAM_ERROR; - - /* when using zlib wrappers, compute Adler-32 for provided dictionary */ - if (wrap == 1) - strm->adler = functable.adler32(strm->adler, dictionary, dictLength); - DEFLATE_SET_DICTIONARY_HOOK(strm, dictionary, dictLength); /* hook for IBM Z DFLTCC */ - s->wrap = 0; /* avoid computing Adler-32 in read_buf */ - - /* if dictionary would fill window, just replace the history */ - if (dictLength >= s->w_size) { - if (wrap == 0) { /* already empty otherwise */ - CLEAR_HASH(s); - s->strstart = 0; - s->block_start = 0L; - s->insert = 0; - } - dictionary += dictLength - s->w_size; /* use the tail */ - dictLength = s->w_size; - } - - /* insert dictionary into window and hash */ - avail = strm->avail_in; - next = strm->next_in; - strm->avail_in = dictLength; - strm->next_in = (const unsigned char *)dictionary; - functable.fill_window(s); - while (s->lookahead >= MIN_MATCH) { - str = s->strstart; - n = s->lookahead - (MIN_MATCH-1); - functable.insert_string(s, str, n); - s->strstart = str + n; - s->lookahead = MIN_MATCH-1; - functable.fill_window(s); - } - s->strstart += s->lookahead; - s->block_start = (long)s->strstart; - s->insert = s->lookahead; - s->lookahead = 0; - s->match_length = s->prev_length = MIN_MATCH-1; - s->match_available = 0; - strm->next_in = next; - strm->avail_in = avail; - s->wrap = wrap; - return Z_OK; -} - -/* ========================================================================= */ -int ZEXPORT PREFIX(deflateGetDictionary)(PREFIX3(stream) *strm, unsigned char *dictionary, unsigned int *dictLength) { - deflate_state *s; - unsigned int len; - - if (deflateStateCheck(strm)) - return Z_STREAM_ERROR; - DEFLATE_GET_DICTIONARY_HOOK(strm, dictionary, dictLength); /* hook for IBM Z DFLTCC */ - s = strm->state; - len = s->strstart + s->lookahead; - if (len > s->w_size) - len = s->w_size; - if (dictionary != NULL && len) - memcpy(dictionary, s->window + s->strstart + s->lookahead - len, len); - if (dictLength != NULL) - *dictLength = len; - return Z_OK; -} - -/* ========================================================================= */ -int ZEXPORT PREFIX(deflateResetKeep)(PREFIX3(stream) *strm) { - deflate_state *s; - - if (deflateStateCheck(strm)) { - return Z_STREAM_ERROR; - } - - strm->total_in = strm->total_out = 0; - strm->msg = NULL; /* use zfree if we ever allocate msg dynamically */ - strm->data_type = Z_UNKNOWN; - - s = (deflate_state *)strm->state; - s->pending = 0; - s->pending_out = s->pending_buf; - - if (s->wrap < 0) { - s->wrap = -s->wrap; /* was made negative by deflate(..., Z_FINISH); */ - } - s->status = -#ifdef GZIP - s->wrap == 2 ? GZIP_STATE : -#endif - INIT_STATE; - -#ifdef GZIP - if (s->wrap == 2) - crc_reset(s); - else -#endif - strm->adler = functable.adler32(0L, NULL, 0); - s->last_flush = -2; - - _tr_init(s); - - DEFLATE_RESET_KEEP_HOOK(strm); /* hook for IBM Z DFLTCC */ - - return Z_OK; -} - -/* ========================================================================= */ -int ZEXPORT PREFIX(deflateReset)(PREFIX3(stream) *strm) { - int ret; - - ret = PREFIX(deflateResetKeep)(strm); - if (ret == Z_OK) - lm_init(strm->state); - return ret; -} - -/* ========================================================================= */ -int ZEXPORT PREFIX(deflateSetHeader)(PREFIX3(stream) *strm, PREFIX(gz_headerp) head) { - if (deflateStateCheck(strm) || strm->state->wrap != 2) - return Z_STREAM_ERROR; - strm->state->gzhead = head; - return Z_OK; -} - -/* ========================================================================= */ -int ZEXPORT PREFIX(deflatePending)(PREFIX3(stream) *strm, uint32_t *pending, int *bits) { - if (deflateStateCheck(strm)) - return Z_STREAM_ERROR; - if (pending != NULL) - *pending = strm->state->pending; - if (bits != NULL) - *bits = strm->state->bi_valid; - return Z_OK; -} - -/* ========================================================================= */ -int ZEXPORT PREFIX(deflatePrime)(PREFIX3(stream) *strm, int bits, int value) { - deflate_state *s; - int put; - - if (deflateStateCheck(strm)) - return Z_STREAM_ERROR; - s = strm->state; - if (bits < 0 || bits > 16 || - s->sym_buf < s->pending_out + ((Buf_size + 7) >> 3)) - return Z_BUF_ERROR; - do { - put = Buf_size - s->bi_valid; - if (put > bits) - put = bits; - s->bi_buf |= (uint16_t)((value & ((1 << put) - 1)) << s->bi_valid); - s->bi_valid += put; - _tr_flush_bits(s); - value >>= put; - bits -= put; - } while (bits); - return Z_OK; -} - -/* ========================================================================= */ -int ZEXPORT PREFIX(deflateParams)(PREFIX3(stream) *strm, int level, int strategy) { - deflate_state *s; - compress_func func; - - if (deflateStateCheck(strm)) - return Z_STREAM_ERROR; - s = strm->state; - - if (level == Z_DEFAULT_COMPRESSION) - level = 6; - if (level < 0 || level > 9 || strategy < 0 || strategy > Z_FIXED) { - return Z_STREAM_ERROR; - } - DEFLATE_PARAMS_HOOK(strm, level, strategy); /* hook for IBM Z DFLTCC */ - func = configuration_table[s->level].func; - - if ((strategy != s->strategy || func != configuration_table[level].func) && - s->last_flush != -2) { - /* Flush the last buffer: */ - int err = PREFIX(deflate)(strm, Z_BLOCK); - if (err == Z_STREAM_ERROR) - return err; - if (strm->avail_in || (s->strstart - s->block_start) + s->lookahead) - return Z_BUF_ERROR; - } - if (s->level != level) { - if (s->level == 0 && s->matches != 0) { - if (s->matches == 1) { - slide_hash(s); - } else { - CLEAR_HASH(s); - } - s->matches = 0; - } - s->level = level; - s->max_lazy_match = configuration_table[level].max_lazy; - s->good_match = configuration_table[level].good_length; - s->nice_match = configuration_table[level].nice_length; - s->max_chain_length = configuration_table[level].max_chain; - } - s->strategy = strategy; - return Z_OK; -} - -/* ========================================================================= */ -int ZEXPORT PREFIX(deflateTune)(PREFIX3(stream) *strm, int good_length, int max_lazy, int nice_length, int max_chain) { - deflate_state *s; - - if (deflateStateCheck(strm)) - return Z_STREAM_ERROR; - s = strm->state; - s->good_match = (unsigned int)good_length; - s->max_lazy_match = (unsigned int)max_lazy; - s->nice_match = nice_length; - s->max_chain_length = (unsigned int)max_chain; - return Z_OK; -} - -/* ========================================================================= - * For the default windowBits of 15 and memLevel of 8, this function returns - * a close to exact, as well as small, upper bound on the compressed size. - * They are coded as constants here for a reason--if the #define's are - * changed, then this function needs to be changed as well. The return - * value for 15 and 8 only works for those exact settings. - * - * For any setting other than those defaults for windowBits and memLevel, - * the value returned is a conservative worst case for the maximum expansion - * resulting from using fixed blocks instead of stored blocks, which deflate - * can emit on compressed data for some combinations of the parameters. - * - * This function could be more sophisticated to provide closer upper bounds for - * every combination of windowBits and memLevel. But even the conservative - * upper bound of about 14% expansion does not seem onerous for output buffer - * allocation. - */ -unsigned long ZEXPORT PREFIX(deflateBound)(PREFIX3(stream) *strm, unsigned long sourceLen) { - deflate_state *s; - unsigned long complen, wraplen; - - /* conservative upper bound for compressed data */ - complen = sourceLen + ((sourceLen + 7) >> 3) + ((sourceLen + 63) >> 6) + 5; - DEFLATE_BOUND_ADJUST_COMPLEN(strm, complen, sourceLen); /* hook for IBM Z DFLTCC */ - - /* if can't get parameters, return conservative bound plus zlib wrapper */ - if (deflateStateCheck(strm)) - return complen + 6; - - /* compute wrapper length */ - s = strm->state; - switch (s->wrap) { - case 0: /* raw deflate */ - wraplen = 0; - break; - case 1: /* zlib wrapper */ - wraplen = 6 + (s->strstart ? 4 : 0); - break; -#ifdef GZIP - case 2: /* gzip wrapper */ - wraplen = 18; - if (s->gzhead != NULL) { /* user-supplied gzip header */ - unsigned char *str; - if (s->gzhead->extra != NULL) { - wraplen += 2 + s->gzhead->extra_len; - } - str = s->gzhead->name; - if (str != NULL) { - do { - wraplen++; - } while (*str++); - } - str = s->gzhead->comment; - if (str != NULL) { - do { - wraplen++; - } while (*str++); - } - if (s->gzhead->hcrc) - wraplen += 2; - } - break; -#endif - default: /* for compiler happiness */ - wraplen = 6; - } - - /* if not default parameters, return conservative bound */ - if (DEFLATE_NEED_CONSERVATIVE_BOUND(strm) || /* hook for IBM Z DFLTCC */ - s->w_bits != 15 || s->hash_bits != 8 + 7) - return complen + wraplen; - - /* default settings: return tight bound for that case */ - return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) + (sourceLen >> 25) + 13 - 6 + wraplen; -} - -/* ========================================================================= - * Put a short in the pending buffer. The 16-bit value is put in MSB order. - * IN assertion: the stream state is correct and there is enough room in - * pending_buf. - */ -static void putShortMSB(deflate_state *s, uint16_t b) { - put_byte(s, (unsigned char)(b >> 8)); - put_byte(s, (unsigned char)(b & 0xff)); -} - -/* ========================================================================= - * Flush as much pending output as possible. All deflate() output, except for - * some deflate_stored() output, goes through this function so some - * applications may wish to modify it to avoid allocating a large - * strm->next_out buffer and copying into it. (See also read_buf()). - */ -ZLIB_INTERNAL void flush_pending(PREFIX3(stream) *strm) { - uint32_t len; - deflate_state *s = strm->state; - - _tr_flush_bits(s); - len = s->pending; - if (len > strm->avail_out) - len = strm->avail_out; - if (len == 0) - return; - - memcpy(strm->next_out, s->pending_out, len); - strm->next_out += len; - s->pending_out += len; - strm->total_out += len; - strm->avail_out -= len; - s->pending -= len; - if (s->pending == 0) { - s->pending_out = s->pending_buf; - } -} - -/* =========================================================================== - * Update the header CRC with the bytes s->pending_buf[beg..s->pending - 1]. - */ -#define HCRC_UPDATE(beg) \ - do { \ - if (s->gzhead->hcrc && s->pending > (beg)) \ - strm->adler = PREFIX(crc32)(strm->adler, s->pending_buf + (beg), s->pending - (beg)); \ - } while (0) - -/* ========================================================================= */ -int ZEXPORT PREFIX(deflate)(PREFIX3(stream) *strm, int flush) { - int old_flush; /* value of flush param for previous deflate call */ - deflate_state *s; - - if (deflateStateCheck(strm) || flush > Z_BLOCK || flush < 0) { - return Z_STREAM_ERROR; - } - s = strm->state; - - if (strm->next_out == NULL || (strm->avail_in != 0 && strm->next_in == NULL) || - (s->status == FINISH_STATE && flush != Z_FINISH)) { - ERR_RETURN(strm, Z_STREAM_ERROR); - } - if (strm->avail_out == 0) - ERR_RETURN(strm, Z_BUF_ERROR); - - old_flush = s->last_flush; - s->last_flush = flush; - - /* Flush as much pending output as possible */ - if (s->pending != 0) { - flush_pending(strm); - if (strm->avail_out == 0) { - /* Since avail_out is 0, deflate will be called again with - * more output space, but possibly with both pending and - * avail_in equal to zero. There won't be anything to do, - * but this is not an error situation so make sure we - * return OK instead of BUF_ERROR at next call of deflate: - */ - s->last_flush = -1; - return Z_OK; - } - - /* Make sure there is something to do and avoid duplicate consecutive - * flushes. For repeated and useless calls with Z_FINISH, we keep - * returning Z_STREAM_END instead of Z_BUF_ERROR. - */ - } else if (strm->avail_in == 0 && RANK(flush) <= RANK(old_flush) && - flush != Z_FINISH) { - ERR_RETURN(strm, Z_BUF_ERROR); - } - - /* User must not provide more input after the first FINISH: */ - if (s->status == FINISH_STATE && strm->avail_in != 0) { - ERR_RETURN(strm, Z_BUF_ERROR); - } - - /* Write the header */ - if (s->status == INIT_STATE && s->wrap == 0) - s->status = BUSY_STATE; - if (s->status == INIT_STATE) { - /* zlib header */ - unsigned int header = (Z_DEFLATED + ((s->w_bits-8)<<4)) << 8; - unsigned int level_flags; - - if (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2) - level_flags = 0; - else if (s->level < 6) - level_flags = 1; - else if (s->level == 6) - level_flags = 2; - else - level_flags = 3; - header |= (level_flags << 6); - if (s->strstart != 0) header |= PRESET_DICT; - header += 31 - (header % 31); - - putShortMSB(s, header); - - /* Save the adler32 of the preset dictionary: */ - if (s->strstart != 0) { - putShortMSB(s, (uint16_t)(strm->adler >> 16)); - putShortMSB(s, (uint16_t)(strm->adler)); - } - strm->adler = functable.adler32(0L, NULL, 0); - s->status = BUSY_STATE; - - /* Compression must start with an empty pending buffer */ - flush_pending(strm); - if (s->pending != 0) { - s->last_flush = -1; - return Z_OK; - } - } -#ifdef GZIP - if (s->status == GZIP_STATE) { - /* gzip header */ - crc_reset(s); - put_byte(s, 31); - put_byte(s, 139); - put_byte(s, 8); - if (s->gzhead == NULL) { - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, s->level == 9 ? 2 : - (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ? 4 : 0)); - put_byte(s, OS_CODE); - s->status = BUSY_STATE; - - /* Compression must start with an empty pending buffer */ - flush_pending(strm); - if (s->pending != 0) { - s->last_flush = -1; - return Z_OK; - } - } - else { - put_byte(s, (s->gzhead->text ? 1 : 0) + - (s->gzhead->hcrc ? 2 : 0) + - (s->gzhead->extra == NULL ? 0 : 4) + - (s->gzhead->name == NULL ? 0 : 8) + - (s->gzhead->comment == NULL ? 0 : 16) - ); - put_byte(s, (unsigned char)(s->gzhead->time & 0xff)); - put_byte(s, (unsigned char)((s->gzhead->time >> 8) & 0xff)); - put_byte(s, (unsigned char)((s->gzhead->time >> 16) & 0xff)); - put_byte(s, (unsigned char)((s->gzhead->time >> 24) & 0xff)); - put_byte(s, s->level == 9 ? 2 : - (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ? 4 : 0)); - put_byte(s, s->gzhead->os & 0xff); - if (s->gzhead->extra != NULL) { - put_byte(s, s->gzhead->extra_len & 0xff); - put_byte(s, (s->gzhead->extra_len >> 8) & 0xff); - } - if (s->gzhead->hcrc) - strm->adler = PREFIX(crc32)(strm->adler, s->pending_buf, s->pending); - s->gzindex = 0; - s->status = EXTRA_STATE; - } - } - if (s->status == EXTRA_STATE) { - if (s->gzhead->extra != NULL) { - uint32_t beg = s->pending; /* start of bytes to update crc */ - uint32_t left = (s->gzhead->extra_len & 0xffff) - s->gzindex; - - while (s->pending + left > s->pending_buf_size) { - uint32_t copy = s->pending_buf_size - s->pending; - memcpy(s->pending_buf + s->pending, s->gzhead->extra + s->gzindex, copy); - s->pending = s->pending_buf_size; - HCRC_UPDATE(beg); - s->gzindex += copy; - flush_pending(strm); - if (s->pending != 0) { - s->last_flush = -1; - return Z_OK; - } - beg = 0; - left -= copy; - } - memcpy(s->pending_buf + s->pending, s->gzhead->extra + s->gzindex, left); - s->pending += left; - HCRC_UPDATE(beg); - s->gzindex = 0; - } - s->status = NAME_STATE; - } - if (s->status == NAME_STATE) { - if (s->gzhead->name != NULL) { - uint32_t beg = s->pending; /* start of bytes to update crc */ - int val; - - do { - if (s->pending == s->pending_buf_size) { - HCRC_UPDATE(beg); - flush_pending(strm); - if (s->pending != 0) { - s->last_flush = -1; - return Z_OK; - } - beg = 0; - } - val = s->gzhead->name[s->gzindex++]; - put_byte(s, val); - } while (val != 0); - HCRC_UPDATE(beg); - s->gzindex = 0; - } - s->status = COMMENT_STATE; - } - if (s->status == COMMENT_STATE) { - if (s->gzhead->comment != NULL) { - uint32_t beg = s->pending; /* start of bytes to update crc */ - int val; - - do { - if (s->pending == s->pending_buf_size) { - HCRC_UPDATE(beg); - flush_pending(strm); - if (s->pending != 0) { - s->last_flush = -1; - return Z_OK; - } - beg = 0; - } - val = s->gzhead->comment[s->gzindex++]; - put_byte(s, val); - } while (val != 0); - HCRC_UPDATE(beg); - } - s->status = HCRC_STATE; - } - if (s->status == HCRC_STATE) { - if (s->gzhead->hcrc) { - if (s->pending + 2 > s->pending_buf_size) { - flush_pending(strm); - if (s->pending != 0) { - s->last_flush = -1; - return Z_OK; - } - } - put_byte(s, (unsigned char)(strm->adler & 0xff)); - put_byte(s, (unsigned char)((strm->adler >> 8) & 0xff)); - crc_reset(s); - } - s->status = BUSY_STATE; - - /* Compression must start with an empty pending buffer */ - flush_pending(strm); - if (s->pending != 0) { - s->last_flush = -1; - return Z_OK; - } - } -#endif - - /* Start a new block or continue the current one. - */ - if (strm->avail_in != 0 || s->lookahead != 0 || (flush != Z_NO_FLUSH && s->status != FINISH_STATE)) { - block_state bstate; - - bstate = DEFLATE_HOOK(strm, flush, &bstate) ? bstate : /* hook for IBM Z DFLTCC */ - s->level == 0 ? deflate_stored(s, flush) : - s->strategy == Z_HUFFMAN_ONLY ? deflate_huff(s, flush) : - s->strategy == Z_RLE ? deflate_rle(s, flush) : -#ifdef X86_QUICK_STRATEGY - (s->level == 1 && !x86_cpu_has_sse42) ? deflate_fast(s, flush) : -#endif - (*(configuration_table[s->level].func))(s, flush); - - if (bstate == finish_started || bstate == finish_done) { - s->status = FINISH_STATE; - } - if (bstate == need_more || bstate == finish_started) { - if (strm->avail_out == 0) { - s->last_flush = -1; /* avoid BUF_ERROR next call, see above */ - } - return Z_OK; - /* If flush != Z_NO_FLUSH && avail_out == 0, the next call - * of deflate should use the same flush parameter to make sure - * that the flush is complete. So we don't have to output an - * empty block here, this will be done at next call. This also - * ensures that for a very small output buffer, we emit at most - * one empty block. - */ - } - if (bstate == block_done) { - if (flush == Z_PARTIAL_FLUSH) { - _tr_align(s); - } else if (flush != Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */ - _tr_stored_block(s, (char*)0, 0L, 0); - /* For a full flush, this empty block will be recognized - * as a special marker by inflate_sync(). - */ - if (flush == Z_FULL_FLUSH) { - CLEAR_HASH(s); /* forget history */ - if (s->lookahead == 0) { - s->strstart = 0; - s->block_start = 0L; - s->insert = 0; - } - } - } - flush_pending(strm); - if (strm->avail_out == 0) { - s->last_flush = -1; /* avoid BUF_ERROR at next call, see above */ - return Z_OK; - } - } - } - - if (flush != Z_FINISH) - return Z_OK; - if (s->wrap <= 0) - return Z_STREAM_END; - - /* Write the trailer */ -#ifdef GZIP - if (s->wrap == 2) { -# ifdef X86_PCLMULQDQ_CRC - crc_finalize(s); -# endif - put_byte(s, (unsigned char)(strm->adler & 0xff)); - put_byte(s, (unsigned char)((strm->adler >> 8) & 0xff)); - put_byte(s, (unsigned char)((strm->adler >> 16) & 0xff)); - put_byte(s, (unsigned char)((strm->adler >> 24) & 0xff)); - put_byte(s, (unsigned char)(strm->total_in & 0xff)); - put_byte(s, (unsigned char)((strm->total_in >> 8) & 0xff)); - put_byte(s, (unsigned char)((strm->total_in >> 16) & 0xff)); - put_byte(s, (unsigned char)((strm->total_in >> 24) & 0xff)); - } else -#endif - { - putShortMSB(s, (uint16_t)(strm->adler >> 16)); - putShortMSB(s, (uint16_t)strm->adler); - } - flush_pending(strm); - /* If avail_out is zero, the application will call deflate again - * to flush the rest. - */ - if (s->wrap > 0) - s->wrap = -s->wrap; /* write the trailer only once! */ - return s->pending != 0 ? Z_OK : Z_STREAM_END; -} - -/* ========================================================================= */ -int ZEXPORT PREFIX(deflateEnd)(PREFIX3(stream) *strm) { - int status; - - if (deflateStateCheck(strm)) - return Z_STREAM_ERROR; - - status = strm->state->status; - - /* Deallocate in reverse order of allocations: */ - TRY_FREE(strm, strm->state->pending_buf); - TRY_FREE(strm, strm->state->head); - TRY_FREE(strm, strm->state->prev); - TRY_FREE_WINDOW(strm, strm->state->window); - - ZFREE_STATE(strm, strm->state); - strm->state = NULL; - - return status == BUSY_STATE ? Z_DATA_ERROR : Z_OK; -} - -/* ========================================================================= - * Copy the source state to the destination state. - */ -int ZEXPORT PREFIX(deflateCopy)(PREFIX3(stream) *dest, PREFIX3(stream) *source) { - deflate_state *ds; - deflate_state *ss; - - if (deflateStateCheck(source) || dest == NULL) { - return Z_STREAM_ERROR; - } - - ss = source->state; - - memcpy((void *)dest, (void *)source, sizeof(PREFIX3(stream))); - - ds = (deflate_state *) ZALLOC_STATE(dest, 1, sizeof(deflate_state)); - if (ds == NULL) - return Z_MEM_ERROR; - dest->state = (struct internal_state *) ds; - ZCOPY_STATE((void *)ds, (void *)ss, sizeof(deflate_state)); - ds->strm = dest; - - ds->window = (unsigned char *) ZALLOC_WINDOW(dest, ds->w_size, 2*sizeof(unsigned char)); - ds->prev = (Pos *) ZALLOC(dest, ds->w_size, sizeof(Pos)); - ds->head = (Pos *) ZALLOC(dest, ds->hash_size, sizeof(Pos)); - ds->pending_buf = (unsigned char *) ZALLOC(dest, ds->lit_bufsize, 4); - - if (ds->window == NULL || ds->prev == NULL || ds->head == NULL || ds->pending_buf == NULL) { - PREFIX(deflateEnd)(dest); - return Z_MEM_ERROR; - } - - memcpy(ds->window, ss->window, ds->w_size * 2 * sizeof(unsigned char)); - memcpy((void *)ds->prev, (void *)ss->prev, ds->w_size * sizeof(Pos)); - memcpy((void *)ds->head, (void *)ss->head, ds->hash_size * sizeof(Pos)); - memcpy(ds->pending_buf, ss->pending_buf, (unsigned int)ds->pending_buf_size); - - ds->pending_out = ds->pending_buf + (ss->pending_out - ss->pending_buf); - ds->sym_buf = ds->pending_buf + ds->lit_bufsize; - - ds->l_desc.dyn_tree = ds->dyn_ltree; - ds->d_desc.dyn_tree = ds->dyn_dtree; - ds->bl_desc.dyn_tree = ds->bl_tree; - - return Z_OK; -} - -/* =========================================================================== - * Read a new buffer from the current input stream, update the adler32 - * and total number of bytes read. All deflate() input goes through - * this function so some applications may wish to modify it to avoid - * allocating a large strm->next_in buffer and copying from it. - * (See also flush_pending()). - */ -ZLIB_INTERNAL unsigned read_buf(PREFIX3(stream) *strm, unsigned char *buf, unsigned size) { - uint32_t len = strm->avail_in; - - if (len > size) - len = size; - if (len == 0) - return 0; - - strm->avail_in -= len; - - if (!DEFLATE_NEED_CHECKSUM(strm)) { - memcpy(buf, strm->next_in, len); - } else -#ifdef GZIP - if (strm->state->wrap == 2) - copy_with_crc(strm, buf, len); - else -#endif - { - memcpy(buf, strm->next_in, len); - if (strm->state->wrap == 1) - strm->adler = functable.adler32(strm->adler, buf, len); - } - strm->next_in += len; - strm->total_in += len; - - return len; -} - -/* =========================================================================== - * Initialize the "longest match" routines for a new zlib stream - */ -static void lm_init(deflate_state *s) { - s->window_size = (unsigned long)2L*s->w_size; - - CLEAR_HASH(s); - - /* Set the default configuration parameters: - */ - s->max_lazy_match = configuration_table[s->level].max_lazy; - s->good_match = configuration_table[s->level].good_length; - s->nice_match = configuration_table[s->level].nice_length; - s->max_chain_length = configuration_table[s->level].max_chain; - - s->strstart = 0; - s->block_start = 0L; - s->lookahead = 0; - s->insert = 0; - s->match_length = s->prev_length = MIN_MATCH-1; - s->match_available = 0; - s->match_start = 0; - s->ins_h = 0; -} - -#ifdef ZLIB_DEBUG -#define EQUAL 0 -/* result of memcmp for equal strings */ - -/* =========================================================================== - * Check that the match at match_start is indeed a match. - */ -void check_match(deflate_state *s, IPos start, IPos match, int length) { - /* check that the match is indeed a match */ - if (memcmp(s->window + match, s->window + start, length) != EQUAL) { - fprintf(stderr, " start %u, match %u, length %d\n", start, match, length); - do { - fprintf(stderr, "%c%c", s->window[match++], s->window[start++]); - } while (--length != 0); - z_error("invalid match"); - } - if (z_verbose > 1) { - fprintf(stderr, "\\[%u,%d]", start-match, length); - do { - putc(s->window[start++], stderr); - } while (--length != 0); - } -} -#else -# define check_match(s, start, match, length) -#endif /* ZLIB_DEBUG */ - -/* =========================================================================== - * Fill the window when the lookahead becomes insufficient. - * Updates strstart and lookahead. - * - * IN assertion: lookahead < MIN_LOOKAHEAD - * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD - * At least one byte has been read, or avail_in == 0; reads are - * performed for at least two bytes (required for the zip translate_eol - * option -- not supported here). - */ - -void ZLIB_INTERNAL fill_window_c(deflate_state *s) { - unsigned n; - unsigned more; /* Amount of free space at the end of the window. */ - unsigned int wsize = s->w_size; - - Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead"); - - do { - more = (unsigned)(s->window_size -(unsigned long)s->lookahead -(unsigned long)s->strstart); - - /* If the window is almost full and there is insufficient lookahead, - * move the upper half to the lower one to make room in the upper half. - */ - if (s->strstart >= wsize+MAX_DIST(s)) { - memcpy(s->window, s->window+wsize, (unsigned)wsize - more); - s->match_start -= wsize; - s->strstart -= wsize; /* we now have strstart >= MAX_DIST */ - s->block_start -= (long) wsize; - if (s->insert > s->strstart) - s->insert = s->strstart; - slide_hash(s); - more += wsize; - } - if (s->strm->avail_in == 0) - break; - - /* If there was no sliding: - * strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 && - * more == window_size - lookahead - strstart - * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1) - * => more >= window_size - 2*WSIZE + 2 - * In the BIG_MEM or MMAP case (not yet supported), - * window_size == input_size + MIN_LOOKAHEAD && - * strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD. - * Otherwise, window_size == 2*WSIZE so more >= 2. - * If there was sliding, more >= WSIZE. So in all cases, more >= 2. - */ - Assert(more >= 2, "more < 2"); - - n = read_buf(s->strm, s->window + s->strstart + s->lookahead, more); - s->lookahead += n; - - /* Initialize the hash value now that we have some input: */ - if (s->lookahead + s->insert >= MIN_MATCH) { - unsigned int str = s->strstart - s->insert; - s->ins_h = s->window[str]; - if (str >= 1) - functable.insert_string(s, str + 2 - MIN_MATCH, 1); -#if MIN_MATCH != 3 -#error Call insert_string() MIN_MATCH-3 more times - while (s->insert) { - functable.insert_string(s, str, 1); - str++; - s->insert--; - if (s->lookahead + s->insert < MIN_MATCH) - break; - } -#else - unsigned int count; - if (unlikely(s->lookahead == 1)){ - count = s->insert - 1; - }else{ - count = s->insert; - } - functable.insert_string(s,str,count); - s->insert -= count; -#endif - } - /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage, - * but this is not important since only literal bytes will be emitted. - */ - } while (s->lookahead < MIN_LOOKAHEAD && s->strm->avail_in != 0); - - /* If the WIN_INIT bytes after the end of the current data have never been - * written, then zero those bytes in order to avoid memory check reports of - * the use of uninitialized (or uninitialised as Julian writes) bytes by - * the longest match routines. Update the high water mark for the next - * time through here. WIN_INIT is set to MAX_MATCH since the longest match - * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead. - */ - if (s->high_water < s->window_size) { - unsigned long curr = s->strstart + (unsigned long)(s->lookahead); - unsigned long init; - - if (s->high_water < curr) { - /* Previous high water mark below current data -- zero WIN_INIT - * bytes or up to end of window, whichever is less. - */ - init = s->window_size - curr; - if (init > WIN_INIT) - init = WIN_INIT; - memset(s->window + curr, 0, (unsigned)init); - s->high_water = curr + init; - } else if (s->high_water < (unsigned long)curr + WIN_INIT) { - /* High water mark at or above current data, but below current data - * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up - * to end of window, whichever is less. - */ - init = (unsigned long)curr + WIN_INIT - s->high_water; - if (init > s->window_size - s->high_water) - init = s->window_size - s->high_water; - memset(s->window + s->high_water, 0, (unsigned)init); - s->high_water += init; - } - } - - Assert((unsigned long)s->strstart <= s->window_size - MIN_LOOKAHEAD, - "not enough room for search"); -} - -/* =========================================================================== - * Copy without compression as much as possible from the input stream, return - * the current block state. - * - * In case deflateParams() is used to later switch to a non-zero compression - * level, s->matches (otherwise unused when storing) keeps track of the number - * of hash table slides to perform. If s->matches is 1, then one hash table - * slide will be done when switching. If s->matches is 2, the maximum value - * allowed here, then the hash table will be cleared, since two or more slides - * is the same as a clear. - * - * deflate_stored() is written to minimize the number of times an input byte is - * copied. It is most efficient with large input and output buffers, which - * maximizes the opportunites to have a single copy from next_in to next_out. - */ -static block_state deflate_stored(deflate_state *s, int flush) { - /* Smallest worthy block size when not flushing or finishing. By default - * this is 32K. This can be as small as 507 bytes for memLevel == 1. For - * large input and output buffers, the stored block size will be larger. - */ - unsigned min_block = MIN(s->pending_buf_size - 5, s->w_size); - - /* Copy as many min_block or larger stored blocks directly to next_out as - * possible. If flushing, copy the remaining available input to next_out as - * stored blocks, if there is enough space. - */ - unsigned len, left, have, last = 0; - unsigned used = s->strm->avail_in; - do { - /* Set len to the maximum size block that we can copy directly with the - * available input data and output space. Set left to how much of that - * would be copied from what's left in the window. - */ - len = MAX_STORED; /* maximum deflate stored block length */ - have = (s->bi_valid + 42) >> 3; /* number of header bytes */ - if (s->strm->avail_out < have) /* need room for header */ - break; - /* maximum stored block length that will fit in avail_out: */ - have = s->strm->avail_out - have; - left = s->strstart - s->block_start; /* bytes left in window */ - if (len > (unsigned long)left + s->strm->avail_in) - len = left + s->strm->avail_in; /* limit len to the input */ - if (len > have) - len = have; /* limit len to the output */ - - /* If the stored block would be less than min_block in length, or if - * unable to copy all of the available input when flushing, then try - * copying to the window and the pending buffer instead. Also don't - * write an empty block when flushing -- deflate() does that. - */ - if (len < min_block && ((len == 0 && flush != Z_FINISH) || flush == Z_NO_FLUSH || len != left + s->strm->avail_in)) - break; - - /* Make a dummy stored block in pending to get the header bytes, - * including any pending bits. This also updates the debugging counts. - */ - last = flush == Z_FINISH && len == left + s->strm->avail_in ? 1 : 0; - _tr_stored_block(s, (char *)0, 0L, last); - - /* Replace the lengths in the dummy stored block with len. */ - s->pending_buf[s->pending - 4] = len; - s->pending_buf[s->pending - 3] = len >> 8; - s->pending_buf[s->pending - 2] = ~len; - s->pending_buf[s->pending - 1] = ~len >> 8; - - /* Write the stored block header bytes. */ - flush_pending(s->strm); - -#ifdef ZLIB_DEBUG - /* Update debugging counts for the data about to be copied. */ - s->compressed_len += len << 3; - s->bits_sent += len << 3; -#endif - - /* Copy uncompressed bytes from the window to next_out. */ - if (left) { - if (left > len) - left = len; - memcpy(s->strm->next_out, s->window + s->block_start, left); - s->strm->next_out += left; - s->strm->avail_out -= left; - s->strm->total_out += left; - s->block_start += left; - len -= left; - } - - /* Copy uncompressed bytes directly from next_in to next_out, updating - * the check value. - */ - if (len) { - read_buf(s->strm, s->strm->next_out, len); - s->strm->next_out += len; - s->strm->avail_out -= len; - s->strm->total_out += len; - } - } while (last == 0); - - /* Update the sliding window with the last s->w_size bytes of the copied - * data, or append all of the copied data to the existing window if less - * than s->w_size bytes were copied. Also update the number of bytes to - * insert in the hash tables, in the event that deflateParams() switches to - * a non-zero compression level. - */ - used -= s->strm->avail_in; /* number of input bytes directly copied */ - if (used) { - /* If any input was used, then no unused input remains in the window, - * therefore s->block_start == s->strstart. - */ - if (used >= s->w_size) { /* supplant the previous history */ - s->matches = 2; /* clear hash */ - memcpy(s->window, s->strm->next_in - s->w_size, s->w_size); - s->strstart = s->w_size; - s->insert = s->strstart; - } - else { - if (s->window_size - s->strstart <= used) { - /* Slide the window down. */ - s->strstart -= s->w_size; - memcpy(s->window, s->window + s->w_size, s->strstart); - if (s->matches < 2) - s->matches++; /* add a pending slide_hash() */ - if (s->insert > s->strstart) - s->insert = s->strstart; - } - memcpy(s->window + s->strstart, s->strm->next_in - used, used); - s->strstart += used; - s->insert += MIN(used, s->w_size - s->insert); - } - s->block_start = s->strstart; - } - if (s->high_water < s->strstart) - s->high_water = s->strstart; - - /* If the last block was written to next_out, then done. */ - if (last) - return finish_done; - - /* If flushing and all input has been consumed, then done. */ - if (flush != Z_NO_FLUSH && flush != Z_FINISH && - s->strm->avail_in == 0 && (long)s->strstart == s->block_start) - return block_done; - - /* Fill the window with any remaining input. */ - have = s->window_size - s->strstart; - if (s->strm->avail_in > have && s->block_start >= (long)s->w_size) { - /* Slide the window down. */ - s->block_start -= s->w_size; - s->strstart -= s->w_size; - memcpy(s->window, s->window + s->w_size, s->strstart); - if (s->matches < 2) - s->matches++; /* add a pending slide_hash() */ - have += s->w_size; /* more space now */ - if (s->insert > s->strstart) - s->insert = s->strstart; - } - if (have > s->strm->avail_in) - have = s->strm->avail_in; - if (have) { - read_buf(s->strm, s->window + s->strstart, have); - s->strstart += have; - s->insert += MIN(have, s->w_size - s->insert); - } - if (s->high_water < s->strstart) - s->high_water = s->strstart; - - /* There was not enough avail_out to write a complete worthy or flushed - * stored block to next_out. Write a stored block to pending instead, if we - * have enough input for a worthy block, or if flushing and there is enough - * room for the remaining input as a stored block in the pending buffer. - */ - have = (s->bi_valid + 42) >> 3; /* number of header bytes */ - /* maximum stored block length that will fit in pending: */ - have = MIN(s->pending_buf_size - have, MAX_STORED); - min_block = MIN(have, s->w_size); - left = s->strstart - s->block_start; - if (left >= min_block || - ((left || flush == Z_FINISH) && flush != Z_NO_FLUSH && - s->strm->avail_in == 0 && left <= have)) { - len = MIN(left, have); - last = flush == Z_FINISH && s->strm->avail_in == 0 && - len == left ? 1 : 0; - _tr_stored_block(s, (char *)s->window + s->block_start, len, last); - s->block_start += len; - flush_pending(s->strm); - } - - /* We've done all we can with the available input and output. */ - return last ? finish_started : need_more; -} - - -/* =========================================================================== - * For Z_RLE, simply look for runs of bytes, generate matches only of distance - * one. Do not maintain a hash table. (It will be regenerated if this run of - * deflate switches away from Z_RLE.) - */ -static block_state deflate_rle(deflate_state *s, int flush) { - int bflush; /* set if current block must be flushed */ - unsigned int prev; /* byte at distance one to match */ - unsigned char *scan, *strend; /* scan goes up to strend for length of run */ - - for (;;) { - /* Make sure that we always have enough lookahead, except - * at the end of the input file. We need MAX_MATCH bytes - * for the longest run, plus one for the unrolled loop. - */ - if (s->lookahead <= MAX_MATCH) { - functable.fill_window(s); - if (s->lookahead <= MAX_MATCH && flush == Z_NO_FLUSH) { - return need_more; - } - if (s->lookahead == 0) - break; /* flush the current block */ - } - - /* See how many times the previous byte repeats */ - s->match_length = 0; - if (s->lookahead >= MIN_MATCH && s->strstart > 0) { - scan = s->window + s->strstart - 1; - prev = *scan; - if (prev == *++scan && prev == *++scan && prev == *++scan) { - strend = s->window + s->strstart + MAX_MATCH; - do { - } while (prev == *++scan && prev == *++scan && - prev == *++scan && prev == *++scan && - prev == *++scan && prev == *++scan && - prev == *++scan && prev == *++scan && - scan < strend); - s->match_length = MAX_MATCH - (unsigned int)(strend - scan); - if (s->match_length > s->lookahead) - s->match_length = s->lookahead; - } - Assert(scan <= s->window+(unsigned int)(s->window_size-1), "wild scan"); - } - - /* Emit match if have run of MIN_MATCH or longer, else emit literal */ - if (s->match_length >= MIN_MATCH) { - check_match(s, s->strstart, s->strstart - 1, s->match_length); - - _tr_tally_dist(s, 1, s->match_length - MIN_MATCH, bflush); - - s->lookahead -= s->match_length; - s->strstart += s->match_length; - s->match_length = 0; - } else { - /* No match, output a literal byte */ - Tracevv((stderr, "%c", s->window[s->strstart])); - _tr_tally_lit(s, s->window[s->strstart], bflush); - s->lookahead--; - s->strstart++; - } - if (bflush) - FLUSH_BLOCK(s, 0); - } - s->insert = 0; - if (flush == Z_FINISH) { - FLUSH_BLOCK(s, 1); - return finish_done; - } - if (s->sym_next) - FLUSH_BLOCK(s, 0); - return block_done; -} - -/* =========================================================================== - * For Z_HUFFMAN_ONLY, do not look for matches. Do not maintain a hash table. - * (It will be regenerated if this run of deflate switches away from Huffman.) - */ -static block_state deflate_huff(deflate_state *s, int flush) { - int bflush; /* set if current block must be flushed */ - - for (;;) { - /* Make sure that we have a literal to write. */ - if (s->lookahead == 0) { - functable.fill_window(s); - if (s->lookahead == 0) { - if (flush == Z_NO_FLUSH) - return need_more; - break; /* flush the current block */ - } - } - - /* Output a literal byte */ - s->match_length = 0; - Tracevv((stderr, "%c", s->window[s->strstart])); - _tr_tally_lit(s, s->window[s->strstart], bflush); - s->lookahead--; - s->strstart++; - if (bflush) - FLUSH_BLOCK(s, 0); - } - s->insert = 0; - if (flush == Z_FINISH) { - FLUSH_BLOCK(s, 1); - return finish_done; - } - if (s->sym_next) - FLUSH_BLOCK(s, 0); - return block_done; -} - -#ifdef ZLIB_DEBUG -/* =========================================================================== - * Send a value on a given number of bits. - * IN assertion: length <= 16 and value fits in length bits. - */ -void send_bits(deflate_state *s, int value, int length) { - Tracevv((stderr, " l %2d v %4x ", length, value)); - Assert(length > 0 && length <= 15, "invalid length"); - s->bits_sent += (unsigned long)length; - - /* If not enough room in bi_buf, use (valid) bits from bi_buf and - * (16 - bi_valid) bits from value, leaving (width - (16-bi_valid)) - * unused bits in value. - */ - if (s->bi_valid > (int)Buf_size - length) { - s->bi_buf |= (uint16_t)value << s->bi_valid; - put_short(s, s->bi_buf); - s->bi_buf = (uint16_t)value >> (Buf_size - s->bi_valid); - s->bi_valid += length - Buf_size; - } else { - s->bi_buf |= (uint16_t)value << s->bi_valid; - s->bi_valid += length; - } -} -#endif diff --git a/libs/zlibng/deflate.h b/libs/zlibng/deflate.h deleted file mode 100644 index bbe8f6b07..000000000 --- a/libs/zlibng/deflate.h +++ /dev/null @@ -1,445 +0,0 @@ -#ifndef DEFLATE_H_ -#define DEFLATE_H_ -/* deflate.h -- internal compression state - * Copyright (C) 1995-2016 Jean-loup Gailly - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* WARNING: this file should *not* be used by applications. It is - part of the implementation of the compression library and is - subject to change. Applications should only use zlib.h. - */ - -/* @(#) $Id$ */ - -#include "zutil.h" -#include "gzendian.h" - -/* define NO_GZIP when compiling if you want to disable gzip header and - trailer creation by deflate(). NO_GZIP would be used to avoid linking in - the crc code when it is not needed. For shared libraries, gzip encoding - should be left enabled. */ -#ifndef NO_GZIP -# define GZIP -#endif - -#define NIL 0 -/* Tail of hash chains */ - - -/* =========================================================================== - * Internal compression state. - */ - -#define LENGTH_CODES 29 -/* number of length codes, not counting the special END_BLOCK code */ - -#define LITERALS 256 -/* number of literal bytes 0..255 */ - -#define L_CODES (LITERALS+1+LENGTH_CODES) -/* number of Literal or Length codes, including the END_BLOCK code */ - -#define D_CODES 30 -/* number of distance codes */ - -#define BL_CODES 19 -/* number of codes used to transfer the bit lengths */ - -#define HEAP_SIZE (2*L_CODES+1) -/* maximum heap size */ - -#define MAX_BITS 15 -/* All codes must not exceed MAX_BITS bits */ - -#define Buf_size 16 -/* size of bit buffer in bi_buf */ - -#define END_BLOCK 256 -/* end of block literal code */ - -#define INIT_STATE 42 /* zlib header -> BUSY_STATE */ -#ifdef GZIP -# define GZIP_STATE 57 /* gzip header -> BUSY_STATE | EXTRA_STATE */ -#endif -#define EXTRA_STATE 69 /* gzip extra block -> NAME_STATE */ -#define NAME_STATE 73 /* gzip file name -> COMMENT_STATE */ -#define COMMENT_STATE 91 /* gzip comment -> HCRC_STATE */ -#define HCRC_STATE 103 /* gzip header CRC -> BUSY_STATE */ -#define BUSY_STATE 113 /* deflate -> FINISH_STATE */ -#define FINISH_STATE 666 /* stream complete */ -/* Stream status */ - - -/* Data structure describing a single value and its code string. */ -typedef struct ct_data_s { - union { - uint16_t freq; /* frequency count */ - uint16_t code; /* bit string */ - } fc; - union { - uint16_t dad; /* father node in Huffman tree */ - uint16_t len; /* length of bit string */ - } dl; -} ct_data; - -#define Freq fc.freq -#define Code fc.code -#define Dad dl.dad -#define Len dl.len - -typedef struct static_tree_desc_s static_tree_desc; - -typedef struct tree_desc_s { - ct_data *dyn_tree; /* the dynamic tree */ - int max_code; /* largest code with non zero frequency */ - const static_tree_desc *stat_desc; /* the corresponding static tree */ -} tree_desc; - -typedef uint16_t Pos; -typedef unsigned IPos; - -/* A Pos is an index in the character window. We use short instead of int to - * save space in the various tables. IPos is used only for parameter passing. - */ - -typedef struct internal_state { - PREFIX3(stream) *strm; /* pointer back to this zlib stream */ - int status; /* as the name implies */ - unsigned char *pending_buf; /* output still pending */ - unsigned long pending_buf_size; /* size of pending_buf */ - unsigned char *pending_out; /* next pending byte to output to the stream */ - uint32_t pending; /* nb of bytes in the pending buffer */ - int wrap; /* bit 0 true for zlib, bit 1 true for gzip */ - PREFIX(gz_headerp) gzhead; /* gzip header information to write */ - uint32_t gzindex; /* where in extra, name, or comment */ - unsigned char method; /* can only be DEFLATED */ - int last_flush; /* value of flush param for previous deflate call */ - -#ifdef X86_PCLMULQDQ_CRC - unsigned crc0[4 * 5]; -#endif - - /* used by deflate.c: */ - - unsigned int w_size; /* LZ77 window size (32K by default) */ - unsigned int w_bits; /* log2(w_size) (8..16) */ - unsigned int w_mask; /* w_size - 1 */ - - unsigned char *window; - /* Sliding window. Input bytes are read into the second half of the window, - * and move to the first half later to keep a dictionary of at least wSize - * bytes. With this organization, matches are limited to a distance of - * wSize-MAX_MATCH bytes, but this ensures that IO is always - * performed with a length multiple of the block size. Also, it limits - * the window size to 64K, which is quite useful on MSDOS. - * To do: use the user input buffer as sliding window. - */ - - unsigned long window_size; - /* Actual size of window: 2*wSize, except when the user input buffer - * is directly used as sliding window. - */ - - Pos *prev; - /* Link to older string with same hash index. To limit the size of this - * array to 64K, this link is maintained only for the last 32K strings. - * An index in this array is thus a window index modulo 32K. - */ - - Pos *head; /* Heads of the hash chains or NIL. */ - - unsigned int ins_h; /* hash index of string to be inserted */ - unsigned int hash_size; /* number of elements in hash table */ - unsigned int hash_bits; /* log2(hash_size) */ - unsigned int hash_mask; /* hash_size-1 */ - - #if !defined(__x86_64__) && !defined(_M_X64) && !defined(__i386) && !defined(_M_IX86) - unsigned int hash_shift; - #endif - /* Number of bits by which ins_h must be shifted at each input - * step. It must be such that after MIN_MATCH steps, the oldest - * byte no longer takes part in the hash key, that is: - * hash_shift * MIN_MATCH >= hash_bits - */ - - long block_start; - /* Window position at the beginning of the current output block. Gets - * negative when the window is moved backwards. - */ - - unsigned int match_length; /* length of best match */ - IPos prev_match; /* previous match */ - int match_available; /* set if previous match exists */ - unsigned int strstart; /* start of string to insert */ - unsigned int match_start; /* start of matching string */ - unsigned int lookahead; /* number of valid bytes ahead in window */ - - unsigned int prev_length; - /* Length of the best match at previous step. Matches not greater than this - * are discarded. This is used in the lazy match evaluation. - */ - - unsigned int max_chain_length; - /* To speed up deflation, hash chains are never searched beyond this - * length. A higher limit improves compression ratio but degrades the - * speed. - */ - - unsigned int max_lazy_match; - /* Attempt to find a better match only when the current match is strictly - * smaller than this value. This mechanism is used only for compression - * levels >= 4. - */ -# define max_insert_length max_lazy_match - /* Insert new strings in the hash table only if the match length is not - * greater than this length. This saves time but degrades compression. - * max_insert_length is used only for compression levels <= 3. - */ - - int level; /* compression level (1..9) */ - int strategy; /* favor or force Huffman coding*/ - - unsigned int good_match; - /* Use a faster search when the previous match is longer than this */ - - int nice_match; /* Stop searching when current match exceeds this */ - - /* used by trees.c: */ - /* Didn't use ct_data typedef below to suppress compiler warning */ - struct ct_data_s dyn_ltree[HEAP_SIZE]; /* literal and length tree */ - struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */ - struct ct_data_s bl_tree[2*BL_CODES+1]; /* Huffman tree for bit lengths */ - - struct tree_desc_s l_desc; /* desc. for literal tree */ - struct tree_desc_s d_desc; /* desc. for distance tree */ - struct tree_desc_s bl_desc; /* desc. for bit length tree */ - - uint16_t bl_count[MAX_BITS+1]; - /* number of codes at each bit length for an optimal tree */ - - int heap[2*L_CODES+1]; /* heap used to build the Huffman trees */ - int heap_len; /* number of elements in the heap */ - int heap_max; /* element of largest frequency */ - /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used. - * The same heap array is used to build all trees. - */ - - unsigned char depth[2*L_CODES+1]; - /* Depth of each subtree used as tie breaker for trees of equal frequency - */ - - unsigned char *sym_buf; /* buffer for distances and literals/lengths */ - - unsigned int lit_bufsize; - /* Size of match buffer for literals/lengths. There are 4 reasons for - * limiting lit_bufsize to 64K: - * - frequencies can be kept in 16 bit counters - * - if compression is not successful for the first block, all input - * data is still in the window so we can still emit a stored block even - * when input comes from standard input. (This can also be done for - * all blocks if lit_bufsize is not greater than 32K.) - * - if compression is not successful for a file smaller than 64K, we can - * even emit a stored file instead of a stored block (saving 5 bytes). - * This is applicable only for zip (not gzip or zlib). - * - creating new Huffman trees less frequently may not provide fast - * adaptation to changes in the input data statistics. (Take for - * example a binary file with poorly compressible code followed by - * a highly compressible string table.) Smaller buffer sizes give - * fast adaptation but have of course the overhead of transmitting - * trees more frequently. - * - I can't count above 4 - */ - - unsigned int sym_next; /* running index in sym_buf */ - unsigned int sym_end; /* symbol table full when sym_next reaches this */ - - unsigned long opt_len; /* bit length of current block with optimal trees */ - unsigned long static_len; /* bit length of current block with static trees */ - unsigned int matches; /* number of string matches in current block */ - unsigned int insert; /* bytes at end of window left to insert */ - -#ifdef ZLIB_DEBUG - unsigned long compressed_len; /* total bit length of compressed file mod 2^32 */ - unsigned long bits_sent; /* bit length of compressed data sent mod 2^32 */ -#endif - - uint16_t bi_buf; - /* Output buffer. bits are inserted starting at the bottom (least - * significant bits). - */ - int bi_valid; - /* Number of valid bits in bi_buf. All bits above the last valid bit - * are always zero. - */ - - unsigned long high_water; - /* High water mark offset in window for initialized bytes -- bytes above - * this are set to zero in order to avoid memory check warnings when - * longest match routines access bytes past the input. This is then - * updated to the new high water mark. - */ - int block_open; - /* Whether or not a block is currently open for the QUICK deflation scheme. - * This is set to 1 if there is an active block, or 0 if the block was just - * closed. - */ - -} deflate_state; - -typedef enum { - need_more, /* block not completed, need more input or more output */ - block_done, /* block flush performed */ - finish_started, /* finish started, need only more output at next deflate */ - finish_done /* finish done, accept no more input or output */ -} block_state; - -/* Output a byte on the stream. - * IN assertion: there is enough room in pending_buf. - */ -#define put_byte(s, c) {s->pending_buf[s->pending++] = (unsigned char)(c);} - -/* =========================================================================== - * Output a short LSB first on the stream. - * IN assertion: there is enough room in pendingBuf. - */ -static inline void put_short(deflate_state *s, uint16_t w) { -#if BYTE_ORDER == BIG_ENDIAN - w = ZSWAP16(w); -#endif - memcpy(&(s->pending_buf[s->pending]), &w, sizeof(uint16_t)); - s->pending += 2; -} - -#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1) -/* Minimum amount of lookahead, except at the end of the input file. - * See deflate.c for comments about the MIN_MATCH+1. - */ - -#define MAX_DIST(s) ((s)->w_size-MIN_LOOKAHEAD) -/* In order to simplify the code, particularly on 16 bit machines, match - * distances are limited to MAX_DIST instead of WSIZE. - */ - -#define WIN_INIT MAX_MATCH -/* Number of bytes after end of data in window to initialize in order to avoid - memory checker errors from longest match routines */ - - -void ZLIB_INTERNAL fill_window_c(deflate_state *s); - - /* in trees.c */ -void ZLIB_INTERNAL _tr_init(deflate_state *s); -int ZLIB_INTERNAL _tr_tally(deflate_state *s, unsigned dist, unsigned lc); -void ZLIB_INTERNAL _tr_flush_block(deflate_state *s, char *buf, unsigned long stored_len, int last); -void ZLIB_INTERNAL _tr_flush_bits(deflate_state *s); -void ZLIB_INTERNAL _tr_align(deflate_state *s); -void ZLIB_INTERNAL _tr_stored_block(deflate_state *s, char *buf, unsigned long stored_len, int last); -void ZLIB_INTERNAL bi_windup(deflate_state *s); -unsigned ZLIB_INTERNAL bi_reverse(unsigned code, int len); -void ZLIB_INTERNAL flush_pending(PREFIX3(streamp) strm); - -#define d_code(dist) ((dist) < 256 ? _dist_code[dist] : _dist_code[256+((dist)>>7)]) -/* Mapping from a distance to a distance code. dist is the distance - 1 and - * must not have side effects. _dist_code[256] and _dist_code[257] are never - * used. - */ - -#ifndef ZLIB_DEBUG -/* Inline versions of _tr_tally for speed: */ - -# if defined(GEN_TREES_H) - extern unsigned char ZLIB_INTERNAL _length_code[]; - extern unsigned char ZLIB_INTERNAL _dist_code[]; -# else - extern const unsigned char ZLIB_INTERNAL _length_code[]; - extern const unsigned char ZLIB_INTERNAL _dist_code[]; -# endif - -# define _tr_tally_lit(s, c, flush) \ - { unsigned char cc = (c); \ - s->sym_buf[s->sym_next++] = 0; \ - s->sym_buf[s->sym_next++] = 0; \ - s->sym_buf[s->sym_next++] = cc; \ - s->dyn_ltree[cc].Freq++; \ - flush = (s->sym_next == s->sym_end); \ - } -# define _tr_tally_dist(s, distance, length, flush) \ - { unsigned char len = (unsigned char)(length); \ - uint16_t dist = (uint16_t)(distance); \ - s->sym_buf[s->sym_next++] = dist; \ - s->sym_buf[s->sym_next++] = dist >> 8; \ - s->sym_buf[s->sym_next++] = len; \ - dist--; \ - s->dyn_ltree[_length_code[len]+LITERALS+1].Freq++; \ - s->dyn_dtree[d_code(dist)].Freq++; \ - flush = (s->sym_next == s->sym_end); \ - } -#else -# define _tr_tally_lit(s, c, flush) flush = _tr_tally(s, 0, c) -# define _tr_tally_dist(s, distance, length, flush) \ - flush = _tr_tally(s, (unsigned)(distance), (unsigned)(length)) -#endif - -/* =========================================================================== - * Update a hash value with the given input byte - * IN assertion: all calls to to UPDATE_HASH are made with consecutive - * input characters, so that a running hash key can be computed from the - * previous key instead of complete recalculation each time. - */ - -#ifdef NOT_TWEAK_COMPILER -#define TRIGGER_LEVEL 6 -#else -#define TRIGGER_LEVEL 5 -#endif - -#if defined(__x86_64__) || defined(_M_X64) || defined(__i386) || defined(_M_IX86) -#define UPDATE_HASH(s, h, i) \ - do {\ - if (s->level < TRIGGER_LEVEL) \ - h = (3483 * (s->window[i]) +\ - 23081* (s->window[i+1]) +\ - 6954 * (s->window[i+2]) +\ - 20947* (s->window[i+3])) & s->hash_mask;\ - else\ - h = (25881* (s->window[i]) +\ - 24674* (s->window[i+1]) +\ - 25811* (s->window[i+2])) & s->hash_mask;\ - } while (0) -#else -# define UPDATE_HASH(s, h, i) (h = (((h) << s->hash_shift) ^ (s->window[i + (MIN_MATCH-1)])) & s->hash_mask) -#endif - -#ifndef ZLIB_DEBUG -# define send_code(s, c, tree) send_bits(s, tree[c].Code, tree[c].Len) -/* Send a code of the given tree. c and tree must not have side effects */ - -#else /* ZLIB_DEBUG */ -# define send_code(s, c, tree) \ - { if (z_verbose > 2) { \ - fprintf(stderr, "\ncd %3d ", (c)); \ - } \ - send_bits(s, tree[c].Code, tree[c].Len); \ - } -#endif - -#ifdef ZLIB_DEBUG -void send_bits(deflate_state *s, int value, int length); -#else -#define send_bits(s, value, length) \ -{ int len = length;\ - if (s->bi_valid > (int)Buf_size - len) {\ - int val = (int)value;\ - s->bi_buf |= (uint16_t)val << s->bi_valid;\ - put_short(s, s->bi_buf);\ - s->bi_buf = (uint16_t)val >> (Buf_size - s->bi_valid);\ - s->bi_valid += len - Buf_size;\ - } else {\ - s->bi_buf |= (uint16_t)(value) << s->bi_valid;\ - s->bi_valid += len;\ - }\ -} -#endif - -#endif /* DEFLATE_H_ */ diff --git a/libs/zlibng/deflate_fast.c b/libs/zlibng/deflate_fast.c deleted file mode 100644 index 07f29f396..000000000 --- a/libs/zlibng/deflate_fast.c +++ /dev/null @@ -1,120 +0,0 @@ -/* deflate_fast.c -- compress data using the fast strategy of deflation algorithm - * - * Copyright (C) 1995-2013 Jean-loup Gailly and Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -#include "zbuild.h" -#include "deflate.h" -#include "deflate_p.h" -#include "match_p.h" -#include "functable.h" - -/* =========================================================================== - * Compress as much as possible from the input stream, return the current - * block state. - * This function does not perform lazy evaluation of matches and inserts - * new strings in the dictionary only for unmatched strings or for short - * matches. It is used only for the fast compression options. - */ -ZLIB_INTERNAL block_state deflate_fast(deflate_state *s, int flush) { - IPos hash_head; /* head of the hash chain */ - int bflush; /* set if current block must be flushed */ - - for (;;) { - /* Make sure that we always have enough lookahead, except - * at the end of the input file. We need MAX_MATCH bytes - * for the next match, plus MIN_MATCH bytes to insert the - * string following the next match. - */ - if (s->lookahead < MIN_LOOKAHEAD) { - functable.fill_window(s); - if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) { - return need_more; - } - if (s->lookahead == 0) - break; /* flush the current block */ - } - - /* Insert the string window[strstart .. strstart+2] in the - * dictionary, and set hash_head to the head of the hash chain: - */ - hash_head = NIL; - if (s->lookahead >= MIN_MATCH) { - hash_head = functable.insert_string(s, s->strstart, 1); - } - - /* Find the longest match, discarding those <= prev_length. - * At this point we have always match_length < MIN_MATCH - */ - if (hash_head != NIL && s->strstart - hash_head <= MAX_DIST(s)) { - /* To simplify the code, we prevent matches with the string - * of window index 0 (in particular we have to avoid a match - * of the string with itself at the start of the input file). - */ - s->match_length = longest_match(s, hash_head); - /* longest_match() sets match_start */ - } - if (s->match_length >= MIN_MATCH) { - check_match(s, s->strstart, s->match_start, s->match_length); - - _tr_tally_dist(s, s->strstart - s->match_start, s->match_length - MIN_MATCH, bflush); - - s->lookahead -= s->match_length; - - /* Insert new strings in the hash table only if the match length - * is not too large. This saves time but degrades compression. - */ - if (s->match_length <= s->max_insert_length && s->lookahead >= MIN_MATCH) { - s->match_length--; /* string at strstart already in table */ - s->strstart++; -#ifdef NOT_TWEAK_COMPILER - do { - functable.insert_string(s, s->strstart, 1); - s->strstart++; - /* strstart never exceeds WSIZE-MAX_MATCH, so there are - * always MIN_MATCH bytes ahead. - */ - } while (--s->match_length != 0); -#else - { - functable.insert_string(s, s->strstart, s->match_length); - s->strstart += s->match_length; - s->match_length = 0; - } -#endif - } else { - s->strstart += s->match_length; - s->match_length = 0; - s->ins_h = s->window[s->strstart]; -#ifndef NOT_TWEAK_COMPILER - functable.insert_string(s, s->strstart + 2 - MIN_MATCH, MIN_MATCH - 2); -#else - functable.insert_string(s, s->strstart + 2 - MIN_MATCH, 1); -#if MIN_MATCH != 3 -#warning Call insert_string() MIN_MATCH-3 more times -#endif -#endif - /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not - * matter since it will be recomputed at next deflate call. - */ - } - } else { - /* No match, output a literal byte */ - Tracevv((stderr, "%c", s->window[s->strstart])); - _tr_tally_lit(s, s->window[s->strstart], bflush); - s->lookahead--; - s->strstart++; - } - if (bflush) - FLUSH_BLOCK(s, 0); - } - s->insert = s->strstart < MIN_MATCH-1 ? s->strstart : MIN_MATCH-1; - if (flush == Z_FINISH) { - FLUSH_BLOCK(s, 1); - return finish_done; - } - if (s->sym_next) - FLUSH_BLOCK(s, 0); - return block_done; -} diff --git a/libs/zlibng/deflate_medium.c b/libs/zlibng/deflate_medium.c deleted file mode 100644 index 330d255c8..000000000 --- a/libs/zlibng/deflate_medium.c +++ /dev/null @@ -1,327 +0,0 @@ -/* deflate_medium.c -- The deflate_medium deflate strategy - * - * Copyright (C) 2013 Intel Corporation. All rights reserved. - * Authors: - * Arjan van de Ven - * - * For conditions of distribution and use, see copyright notice in zlib.h - */ -#ifndef NO_MEDIUM_STRATEGY -#include "zbuild.h" -#include "deflate.h" -#include "deflate_p.h" -#include "match_p.h" -#include "functable.h" - -struct match { - unsigned int match_start; - unsigned int match_length; - unsigned int strstart; - unsigned int orgstart; -}; - -#define MAX_DIST2 ((1 << MAX_WBITS) - MIN_LOOKAHEAD) - -static int tr_tally_dist(deflate_state *s, int distance, int length) { - return _tr_tally(s, distance, length); -} - -static int tr_tally_lit(deflate_state *s, int c) { - return _tr_tally(s, 0, c); -} - -static int emit_match(deflate_state *s, struct match match) { - int flush = 0; - - /* matches that are not long enough we need to emit as literals */ - if (match.match_length < MIN_MATCH) { - while (match.match_length) { - flush += tr_tally_lit(s, s->window[match.strstart]); - s->lookahead--; - match.strstart++; - match.match_length--; - } - return flush; - } - - check_match(s, match.strstart, match.match_start, match.match_length); - - flush += tr_tally_dist(s, match.strstart - match.match_start, match.match_length - MIN_MATCH); - - s->lookahead -= match.match_length; - return flush; -} - -static void insert_match(deflate_state *s, struct match match) { - if (unlikely(s->lookahead <= match.match_length + MIN_MATCH)) - return; - - /* matches that are not long enough we need to emit as literals */ - if (match.match_length < MIN_MATCH) { -#ifdef NOT_TWEAK_COMPILER - while (match.match_length) { - match.strstart++; - match.match_length--; - - if (match.match_length) { - if (match.strstart >= match.orgstart) { - functable.insert_string(s, match.strstart, 1); - } - } - } -#else - match.strstart++; - match.match_length--; - if (match.match_length > 0) { - if (match.strstart >= match.orgstart) { - if (match.strstart + match.match_length - 1 >= match.orgstart) { - functable.insert_string(s, match.strstart, match.match_length); - } else { - functable.insert_string(s, match.strstart, match.orgstart - match.strstart + 1); - } - match.strstart += match.match_length; - match.match_length = 0; - } - } -#endif - return; - } - - /* Insert new strings in the hash table only if the match length - * is not too large. This saves time but degrades compression. - */ - if (match.match_length <= 16* s->max_insert_length && s->lookahead >= MIN_MATCH) { - match.match_length--; /* string at strstart already in table */ - match.strstart++; -#ifdef NOT_TWEAK_COMPILER - do { - if (likely(match.strstart >= match.orgstart)) { - functable.insert_string(s, match.strstart, 1); - } - match.strstart++; - /* strstart never exceeds WSIZE-MAX_MATCH, so there are - * always MIN_MATCH bytes ahead. - */ - } while (--match.match_length != 0); -#else - if (likely(match.strstart >= match.orgstart)) { - if (likely(match.strstart + match.match_length - 1 >= match.orgstart)) { - functable.insert_string(s, match.strstart, match.match_length); - } else { - functable.insert_string(s, match.strstart, match.orgstart - match.strstart + 1); - } - } - match.strstart += match.match_length; - match.match_length = 0; -#endif - } else { - match.strstart += match.match_length; - match.match_length = 0; - s->ins_h = s->window[match.strstart]; - if (match.strstart >= (MIN_MATCH - 2)) -#ifndef NOT_TWEAK_COMPILER - functable.insert_string(s, match.strstart + 2 - MIN_MATCH, MIN_MATCH - 2); -#else - functable.insert_string(s, match.strstart + 2 - MIN_MATCH, 1); -#if MIN_MATCH != 3 -#warning Call insert_string() MIN_MATCH-3 more times -#endif -#endif - /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not - * matter since it will be recomputed at next deflate call. - */ - } -} - -static void fizzle_matches(deflate_state *s, struct match *current, struct match *next) { - IPos limit; - unsigned char *match, *orig; - int changed = 0; - struct match c, n; - /* step zero: sanity checks */ - - if (current->match_length <= 1) - return; - - if (unlikely(current->match_length > 1 + next->match_start)) - return; - - if (unlikely(current->match_length > 1 + next->strstart)) - return; - - match = s->window - current->match_length + 1 + next->match_start; - orig = s->window - current->match_length + 1 + next->strstart; - - /* quick exit check.. if this fails then don't bother with anything else */ - if (likely(*match != *orig)) - return; - - c = *current; - n = *next; - - /* step one: try to move the "next" match to the left as much as possible */ - limit = next->strstart > MAX_DIST2 ? next->strstart - MAX_DIST2 : 0; - - match = s->window + n.match_start - 1; - orig = s->window + n.strstart - 1; - - while (*match == *orig) { - if (c.match_length < 1) - break; - if (n.strstart <= limit) - break; - if (n.match_length >= 256) - break; - if (n.match_start <= 1) - break; - - n.strstart--; - n.match_start--; - n.match_length++; - c.match_length--; - match--; - orig--; - changed++; - } - - if (!changed) - return; - - if (c.match_length <= 1 && n.match_length != 2) { - n.orgstart++; - *current = c; - *next = n; - } else { - return; - } -} - -ZLIB_INTERNAL block_state deflate_medium(deflate_state *s, int flush) { - struct match current_match, next_match; - - memset(¤t_match, 0, sizeof(struct match)); - memset(&next_match, 0, sizeof(struct match)); - - for (;;) { - IPos hash_head = 0; /* head of the hash chain */ - int bflush; /* set if current block must be flushed */ - - /* Make sure that we always have enough lookahead, except - * at the end of the input file. We need MAX_MATCH bytes - * for the next match, plus MIN_MATCH bytes to insert the - * string following the next current_match. - */ - if (s->lookahead < MIN_LOOKAHEAD) { - functable.fill_window(s); - if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) { - return need_more; - } - if (s->lookahead == 0) - break; /* flush the current block */ - next_match.match_length = 0; - } - s->prev_length = 2; - - /* Insert the string window[strstart .. strstart+2] in the - * dictionary, and set hash_head to the head of the hash chain: - */ - - /* If we already have a future match from a previous round, just use that */ - if (next_match.match_length > 0) { - current_match = next_match; - next_match.match_length = 0; - - } else { - hash_head = 0; - if (s->lookahead >= MIN_MATCH) { - hash_head = functable.insert_string(s, s->strstart, 1); - } - - /* set up the initial match to be a 1 byte literal */ - current_match.match_start = 0; - current_match.match_length = 1; - current_match.strstart = s->strstart; - current_match.orgstart = current_match.strstart; - - /* Find the longest match, discarding those <= prev_length. - * At this point we have always match_length < MIN_MATCH - */ - - if (hash_head != 0 && s->strstart - hash_head <= MAX_DIST2) { - /* To simplify the code, we prevent matches with the string - * of window index 0 (in particular we have to avoid a match - * of the string with itself at the start of the input file). - */ - current_match.match_length = longest_match(s, hash_head); - current_match.match_start = s->match_start; - if (current_match.match_length < MIN_MATCH) - current_match.match_length = 1; - if (current_match.match_start >= current_match.strstart) { - /* this can happen due to some restarts */ - current_match.match_length = 1; - } - } - } - - insert_match(s, current_match); - - /* now, look ahead one */ - if (s->lookahead > MIN_LOOKAHEAD && (current_match.strstart + current_match.match_length) < (s->window_size - MIN_LOOKAHEAD)) { - s->strstart = current_match.strstart + current_match.match_length; - hash_head = functable.insert_string(s, s->strstart, 1); - - /* set up the initial match to be a 1 byte literal */ - next_match.match_start = 0; - next_match.match_length = 1; - next_match.strstart = s->strstart; - next_match.orgstart = next_match.strstart; - - /* Find the longest match, discarding those <= prev_length. - * At this point we have always match_length < MIN_MATCH - */ - if (hash_head != 0 && s->strstart - hash_head <= MAX_DIST2) { - /* To simplify the code, we prevent matches with the string - * of window index 0 (in particular we have to avoid a match - * of the string with itself at the start of the input file). - */ - next_match.match_length = longest_match(s, hash_head); - next_match.match_start = s->match_start; - if (next_match.match_start >= next_match.strstart) { - /* this can happen due to some restarts */ - next_match.match_length = 1; - } - if (next_match.match_length < MIN_MATCH) - next_match.match_length = 1; - else - fizzle_matches(s, ¤t_match, &next_match); - } - - /* short matches with a very long distance are rarely a good idea encoding wise */ - if (next_match.match_length == 3 && (next_match.strstart - next_match.match_start) > 12000) - next_match.match_length = 1; - s->strstart = current_match.strstart; - - } else { - next_match.match_length = 0; - } - - /* now emit the current match */ - bflush = emit_match(s, current_match); - - /* move the "cursor" forward */ - s->strstart += current_match.match_length; - - if (bflush) - FLUSH_BLOCK(s, 0); - } - s->insert = s->strstart < MIN_MATCH-1 ? s->strstart : MIN_MATCH-1; - if (flush == Z_FINISH) { - FLUSH_BLOCK(s, 1); - return finish_done; - } - if (s->sym_next) - FLUSH_BLOCK(s, 0); - - return block_done; -} -#endif diff --git a/libs/zlibng/deflate_p.h b/libs/zlibng/deflate_p.h deleted file mode 100644 index 69a7c82a0..000000000 --- a/libs/zlibng/deflate_p.h +++ /dev/null @@ -1,77 +0,0 @@ -/* deflate_p.h -- Private inline functions and macros shared with more than - * one deflate method - * - * Copyright (C) 1995-2013 Jean-loup Gailly and Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - * - */ - -#ifndef DEFLATE_P_H -#define DEFLATE_P_H - -/* Forward declare common non-inlined functions declared in deflate.c */ - -#ifdef ZLIB_DEBUG -void check_match(deflate_state *s, IPos start, IPos match, int length); -#else -#define check_match(s, start, match, length) -#endif -void flush_pending(PREFIX3(stream) *strm); - -/* =========================================================================== - * Insert string str in the dictionary and set match_head to the previous head - * of the hash chain (the most recent string with same hash key). Return - * the previous length of the hash chain. - * IN assertion: all calls to to INSERT_STRING are made with consecutive - * input characters and the first MIN_MATCH bytes of str are valid - * (except for the last MIN_MATCH-1 bytes of the input file). - */ - -static inline Pos insert_string_c(deflate_state *const s, const Pos str, unsigned int count) { - Pos ret = 0; - unsigned int idx; - - for (idx = 0; idx < count; idx++) { - UPDATE_HASH(s, s->ins_h, str+idx); - - Pos head = s->head[s->ins_h]; - if (head != str+idx) { - s->prev[(str+idx) & s->w_mask] = head; - s->head[s->ins_h] = str+idx; - if (idx == count - 1) - ret = head; - } else if (idx == count - 1) { - ret = str + idx; - } - } - return ret; -} - -/* =========================================================================== - * Flush the current block, with given end-of-file flag. - * IN assertion: strstart is set to the end of the current match. - */ -#define FLUSH_BLOCK_ONLY(s, last) { \ - _tr_flush_block(s, (s->block_start >= 0L ? \ - (char *)&s->window[(unsigned)s->block_start] : \ - NULL), \ - (unsigned long)((long)s->strstart - s->block_start), \ - (last)); \ - s->block_start = s->strstart; \ - flush_pending(s->strm); \ - Tracev((stderr, "[FLUSH]")); \ -} - -/* Same but force premature exit if necessary. */ -#define FLUSH_BLOCK(s, last) { \ - FLUSH_BLOCK_ONLY(s, last); \ - if (s->strm->avail_out == 0) return (last) ? finish_started : need_more; \ -} - -/* Maximum stored block length in deflate format (not including header). */ -#define MAX_STORED 65535 - -/* Minimum of a and b. */ -#define MIN(a, b) ((a) > (b) ? (b) : (a)) - -#endif diff --git a/libs/zlibng/deflate_slow.c b/libs/zlibng/deflate_slow.c deleted file mode 100644 index f4c8af769..000000000 --- a/libs/zlibng/deflate_slow.c +++ /dev/null @@ -1,164 +0,0 @@ -/* deflate_slow.c -- compress data using the slow strategy of deflation algorithm - * - * Copyright (C) 1995-2013 Jean-loup Gailly and Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -#include "zbuild.h" -#include "deflate.h" -#include "deflate_p.h" -#include "match_p.h" -#include "functable.h" - -/* =========================================================================== - * Local data - */ - -#ifndef TOO_FAR -# define TOO_FAR 4096 -#endif -/* Matches of length 3 are discarded if their distance exceeds TOO_FAR */ - -/* =========================================================================== - * Same as deflate_medium, but achieves better compression. We use a lazy - * evaluation for matches: a match is finally adopted only if there is - * no better match at the next window position. - */ -ZLIB_INTERNAL block_state deflate_slow(deflate_state *s, int flush) { - IPos hash_head; /* head of hash chain */ - int bflush; /* set if current block must be flushed */ - - /* Process the input block. */ - for (;;) { - /* Make sure that we always have enough lookahead, except - * at the end of the input file. We need MAX_MATCH bytes - * for the next match, plus MIN_MATCH bytes to insert the - * string following the next match. - */ - if (s->lookahead < MIN_LOOKAHEAD) { - functable.fill_window(s); - if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) { - return need_more; - } - if (s->lookahead == 0) - break; /* flush the current block */ - } - - /* Insert the string window[strstart .. strstart+2] in the - * dictionary, and set hash_head to the head of the hash chain: - */ - hash_head = NIL; - if (s->lookahead >= MIN_MATCH) { - hash_head = functable.insert_string(s, s->strstart, 1); - } - - /* Find the longest match, discarding those <= prev_length. - */ - s->prev_length = s->match_length, s->prev_match = s->match_start; - s->match_length = MIN_MATCH-1; - - if (hash_head != NIL && s->prev_length < s->max_lazy_match && s->strstart - hash_head <= MAX_DIST(s)) { - /* To simplify the code, we prevent matches with the string - * of window index 0 (in particular we have to avoid a match - * of the string with itself at the start of the input file). - */ - s->match_length = longest_match(s, hash_head); - /* longest_match() sets match_start */ - - if (s->match_length <= 5 && (s->strategy == Z_FILTERED -#if TOO_FAR <= 32767 - || (s->match_length == MIN_MATCH && s->strstart - s->match_start > TOO_FAR) -#endif - )) { - - /* If prev_match is also MIN_MATCH, match_start is garbage - * but we will ignore the current match anyway. - */ - s->match_length = MIN_MATCH-1; - } - } - /* If there was a match at the previous step and the current - * match is not better, output the previous match: - */ - if (s->prev_length >= MIN_MATCH && s->match_length <= s->prev_length) { - unsigned int max_insert = s->strstart + s->lookahead - MIN_MATCH; - /* Do not insert strings in hash table beyond this. */ - - check_match(s, s->strstart-1, s->prev_match, s->prev_length); - - _tr_tally_dist(s, s->strstart -1 - s->prev_match, s->prev_length - MIN_MATCH, bflush); - - /* Insert in hash table all strings up to the end of the match. - * strstart-1 and strstart are already inserted. If there is not - * enough lookahead, the last two strings are not inserted in - * the hash table. - */ - s->lookahead -= s->prev_length-1; - -#ifdef NOT_TWEAK_COMPILER - s->prev_length -= 2; - do { - if (++s->strstart <= max_insert) { - functable.insert_string(s, s->strstart, 1); - } - } while (--s->prev_length != 0); - s->match_available = 0; - s->match_length = MIN_MATCH-1; - s->strstart++; -#else - { - unsigned int mov_fwd = s->prev_length - 2; - if (max_insert > s->strstart) { - unsigned int insert_cnt = mov_fwd; - if (unlikely(insert_cnt > max_insert - s->strstart)) - insert_cnt = max_insert - s->strstart; - - functable.insert_string(s, s->strstart + 1, insert_cnt); - } - s->prev_length = 0; - s->match_available = 0; - s->match_length = MIN_MATCH-1; - s->strstart += mov_fwd + 1; - } -#endif /*NOT_TWEAK_COMPILER*/ - - if (bflush) FLUSH_BLOCK(s, 0); - - } else if (s->match_available) { - /* If there was no match at the previous position, output a - * single literal. If there was a match but the current match - * is longer, truncate the previous match to a single literal. - */ - Tracevv((stderr, "%c", s->window[s->strstart-1])); - _tr_tally_lit(s, s->window[s->strstart-1], bflush); - if (bflush) { - FLUSH_BLOCK_ONLY(s, 0); - } - s->strstart++; - s->lookahead--; - if (s->strm->avail_out == 0) - return need_more; - } else { - /* There is no previous match to compare with, wait for - * the next step to decide. - */ - s->match_available = 1; - s->strstart++; - s->lookahead--; - } - } - Assert(flush != Z_NO_FLUSH, "no flush?"); - if (s->match_available) { - Tracevv((stderr, "%c", s->window[s->strstart-1])); - _tr_tally_lit(s, s->window[s->strstart-1], bflush); - s->match_available = 0; - } - s->insert = s->strstart < MIN_MATCH-1 ? s->strstart : MIN_MATCH-1; - if (flush == Z_FINISH) { - FLUSH_BLOCK(s, 1); - return finish_done; - } - if (s->sym_next) - FLUSH_BLOCK(s, 0); - return block_done; -} diff --git a/libs/zlibng/doc/algorithm.txt b/libs/zlibng/doc/algorithm.txt deleted file mode 100644 index c97f49502..000000000 --- a/libs/zlibng/doc/algorithm.txt +++ /dev/null @@ -1,209 +0,0 @@ -1. Compression algorithm (deflate) - -The deflation algorithm used by gzip (also zip and zlib) is a variation of -LZ77 (Lempel-Ziv 1977, see reference below). It finds duplicated strings in -the input data. The second occurrence of a string is replaced by a -pointer to the previous string, in the form of a pair (distance, -length). Distances are limited to 32K bytes, and lengths are limited -to 258 bytes. When a string does not occur anywhere in the previous -32K bytes, it is emitted as a sequence of literal bytes. (In this -description, `string' must be taken as an arbitrary sequence of bytes, -and is not restricted to printable characters.) - -Literals or match lengths are compressed with one Huffman tree, and -match distances are compressed with another tree. The trees are stored -in a compact form at the start of each block. The blocks can have any -size (except that the compressed data for one block must fit in -available memory). A block is terminated when deflate() determines that -it would be useful to start another block with fresh trees. (This is -somewhat similar to the behavior of LZW-based _compress_.) - -Duplicated strings are found using a hash table. All input strings of -length 3 are inserted in the hash table. A hash index is computed for -the next 3 bytes. If the hash chain for this index is not empty, all -strings in the chain are compared with the current input string, and -the longest match is selected. - -The hash chains are searched starting with the most recent strings, to -favor small distances and thus take advantage of the Huffman encoding. -The hash chains are singly linked. There are no deletions from the -hash chains, the algorithm simply discards matches that are too old. - -To avoid a worst-case situation, very long hash chains are arbitrarily -truncated at a certain length, determined by a runtime option (level -parameter of deflateInit). So deflate() does not always find the longest -possible match but generally finds a match which is long enough. - -deflate() also defers the selection of matches with a lazy evaluation -mechanism. After a match of length N has been found, deflate() searches for -a longer match at the next input byte. If a longer match is found, the -previous match is truncated to a length of one (thus producing a single -literal byte) and the process of lazy evaluation begins again. Otherwise, -the original match is kept, and the next match search is attempted only N -steps later. - -The lazy match evaluation is also subject to a runtime parameter. If -the current match is long enough, deflate() reduces the search for a longer -match, thus speeding up the whole process. If compression ratio is more -important than speed, deflate() attempts a complete second search even if -the first match is already long enough. - -The lazy match evaluation is not performed for the fastest compression -modes (level parameter 1 to 3). For these fast modes, new strings -are inserted in the hash table only when no match was found, or -when the match is not too long. This degrades the compression ratio -but saves time since there are both fewer insertions and fewer searches. - - -2. Decompression algorithm (inflate) - -2.1 Introduction - -The key question is how to represent a Huffman code (or any prefix code) so -that you can decode fast. The most important characteristic is that shorter -codes are much more common than longer codes, so pay attention to decoding the -short codes fast, and let the long codes take longer to decode. - -inflate() sets up a first level table that covers some number of bits of -input less than the length of longest code. It gets that many bits from the -stream, and looks it up in the table. The table will tell if the next -code is that many bits or less and how many, and if it is, it will tell -the value, else it will point to the next level table for which inflate() -grabs more bits and tries to decode a longer code. - -How many bits to make the first lookup is a tradeoff between the time it -takes to decode and the time it takes to build the table. If building the -table took no time (and if you had infinite memory), then there would only -be a first level table to cover all the way to the longest code. However, -building the table ends up taking a lot longer for more bits since short -codes are replicated many times in such a table. What inflate() does is -simply to make the number of bits in the first table a variable, and then -to set that variable for the maximum speed. - -For inflate, which has 286 possible codes for the literal/length tree, the size -of the first table is nine bits. Also the distance trees have 30 possible -values, and the size of the first table is six bits. Note that for each of -those cases, the table ended up one bit longer than the ``average'' code -length, i.e. the code length of an approximately flat code which would be a -little more than eight bits for 286 symbols and a little less than five bits -for 30 symbols. - - -2.2 More details on the inflate table lookup - -Ok, you want to know what this cleverly obfuscated inflate tree actually -looks like. You are correct that it's not a Huffman tree. It is simply a -lookup table for the first, let's say, nine bits of a Huffman symbol. The -symbol could be as short as one bit or as long as 15 bits. If a particular -symbol is shorter than nine bits, then that symbol's translation is duplicated -in all those entries that start with that symbol's bits. For example, if the -symbol is four bits, then it's duplicated 32 times in a nine-bit table. If a -symbol is nine bits long, it appears in the table once. - -If the symbol is longer than nine bits, then that entry in the table points -to another similar table for the remaining bits. Again, there are duplicated -entries as needed. The idea is that most of the time the symbol will be short -and there will only be one table look up. (That's whole idea behind data -compression in the first place.) For the less frequent long symbols, there -will be two lookups. If you had a compression method with really long -symbols, you could have as many levels of lookups as is efficient. For -inflate, two is enough. - -So a table entry either points to another table (in which case nine bits in -the above example are gobbled), or it contains the translation for the symbol -and the number of bits to gobble. Then you start again with the next -ungobbled bit. - -You may wonder: why not just have one lookup table for how ever many bits the -longest symbol is? The reason is that if you do that, you end up spending -more time filling in duplicate symbol entries than you do actually decoding. -At least for deflate's output that generates new trees every several 10's of -kbytes. You can imagine that filling in a 2^15 entry table for a 15-bit code -would take too long if you're only decoding several thousand symbols. At the -other extreme, you could make a new table for every bit in the code. In fact, -that's essentially a Huffman tree. But then you spend too much time -traversing the tree while decoding, even for short symbols. - -So the number of bits for the first lookup table is a trade of the time to -fill out the table vs. the time spent looking at the second level and above of -the table. - -Here is an example, scaled down: - -The code being decoded, with 10 symbols, from 1 to 6 bits long: - -A: 0 -B: 10 -C: 1100 -D: 11010 -E: 11011 -F: 11100 -G: 11101 -H: 11110 -I: 111110 -J: 111111 - -Let's make the first table three bits long (eight entries): - -000: A,1 -001: A,1 -010: A,1 -011: A,1 -100: B,2 -101: B,2 -110: -> table X (gobble 3 bits) -111: -> table Y (gobble 3 bits) - -Each entry is what the bits decode as and how many bits that is, i.e. how -many bits to gobble. Or the entry points to another table, with the number of -bits to gobble implicit in the size of the table. - -Table X is two bits long since the longest code starting with 110 is five bits -long: - -00: C,1 -01: C,1 -10: D,2 -11: E,2 - -Table Y is three bits long since the longest code starting with 111 is six -bits long: - -000: F,2 -001: F,2 -010: G,2 -011: G,2 -100: H,2 -101: H,2 -110: I,3 -111: J,3 - -So what we have here are three tables with a total of 20 entries that had to -be constructed. That's compared to 64 entries for a single table. Or -compared to 16 entries for a Huffman tree (six two entry tables and one four -entry table). Assuming that the code ideally represents the probability of -the symbols, it takes on the average 1.25 lookups per symbol. That's compared -to one lookup for the single table, or 1.66 lookups per symbol for the -Huffman tree. - -There, I think that gives you a picture of what's going on. For inflate, the -meaning of a particular symbol is often more than just a letter. It can be a -byte (a "literal"), or it can be either a length or a distance which -indicates a base value and a number of bits to fetch after the code that is -added to the base value. Or it might be the special end-of-block code. The -data structures created in inftrees.c try to encode all that information -compactly in the tables. - - -Jean-loup Gailly Mark Adler -jloup@gzip.org madler@alumni.caltech.edu - - -References: - -[LZ77] Ziv J., Lempel A., ``A Universal Algorithm for Sequential Data -Compression,'' IEEE Transactions on Information Theory, Vol. 23, No. 3, -pp. 337-343. - -``DEFLATE Compressed Data Format Specification'' available in -http://tools.ietf.org/html/rfc1951 diff --git a/libs/zlibng/doc/rfc1950.txt b/libs/zlibng/doc/rfc1950.txt deleted file mode 100644 index ce6428a0f..000000000 --- a/libs/zlibng/doc/rfc1950.txt +++ /dev/null @@ -1,619 +0,0 @@ - - - - - - -Network Working Group P. Deutsch -Request for Comments: 1950 Aladdin Enterprises -Category: Informational J-L. Gailly - Info-ZIP - May 1996 - - - ZLIB Compressed Data Format Specification version 3.3 - -Status of This Memo - - This memo provides information for the Internet community. This memo - does not specify an Internet standard of any kind. Distribution of - this memo is unlimited. - -IESG Note: - - The IESG takes no position on the validity of any Intellectual - Property Rights statements contained in this document. - -Notices - - Copyright (c) 1996 L. Peter Deutsch and Jean-Loup Gailly - - Permission is granted to copy and distribute this document for any - purpose and without charge, including translations into other - languages and incorporation into compilations, provided that the - copyright notice and this notice are preserved, and that any - substantive changes or deletions from the original are clearly - marked. - - A pointer to the latest version of this and related documentation in - HTML format can be found at the URL - . - -Abstract - - This specification defines a lossless compressed data format. The - data can be produced or consumed, even for an arbitrarily long - sequentially presented input data stream, using only an a priori - bounded amount of intermediate storage. The format presently uses - the DEFLATE compression method but can be easily extended to use - other compression methods. It can be implemented readily in a manner - not covered by patents. This specification also defines the ADLER-32 - checksum (an extension and improvement of the Fletcher checksum), - used for detection of data corruption, and provides an algorithm for - computing it. - - - - -Deutsch & Gailly Informational [Page 1] - -RFC 1950 ZLIB Compressed Data Format Specification May 1996 - - -Table of Contents - - 1. Introduction ................................................... 2 - 1.1. Purpose ................................................... 2 - 1.2. Intended audience ......................................... 3 - 1.3. Scope ..................................................... 3 - 1.4. Compliance ................................................ 3 - 1.5. Definitions of terms and conventions used ................ 3 - 1.6. Changes from previous versions ............................ 3 - 2. Detailed specification ......................................... 3 - 2.1. Overall conventions ....................................... 3 - 2.2. Data format ............................................... 4 - 2.3. Compliance ................................................ 7 - 3. References ..................................................... 7 - 4. Source code .................................................... 8 - 5. Security Considerations ........................................ 8 - 6. Acknowledgements ............................................... 8 - 7. Authors' Addresses ............................................. 8 - 8. Appendix: Rationale ............................................ 9 - 9. Appendix: Sample code ..........................................10 - -1. Introduction - - 1.1. Purpose - - The purpose of this specification is to define a lossless - compressed data format that: - - * Is independent of CPU type, operating system, file system, - and character set, and hence can be used for interchange; - - * Can be produced or consumed, even for an arbitrarily long - sequentially presented input data stream, using only an a - priori bounded amount of intermediate storage, and hence can - be used in data communications or similar structures such as - Unix filters; - - * Can use a number of different compression methods; - - * Can be implemented readily in a manner not covered by - patents, and hence can be practiced freely. - - The data format defined by this specification does not attempt to - allow random access to compressed data. - - - - - - - -Deutsch & Gailly Informational [Page 2] - -RFC 1950 ZLIB Compressed Data Format Specification May 1996 - - - 1.2. Intended audience - - This specification is intended for use by implementors of software - to compress data into zlib format and/or decompress data from zlib - format. - - The text of the specification assumes a basic background in - programming at the level of bits and other primitive data - representations. - - 1.3. Scope - - The specification specifies a compressed data format that can be - used for in-memory compression of a sequence of arbitrary bytes. - - 1.4. Compliance - - Unless otherwise indicated below, a compliant decompressor must be - able to accept and decompress any data set that conforms to all - the specifications presented here; a compliant compressor must - produce data sets that conform to all the specifications presented - here. - - 1.5. Definitions of terms and conventions used - - byte: 8 bits stored or transmitted as a unit (same as an octet). - (For this specification, a byte is exactly 8 bits, even on - machines which store a character on a number of bits different - from 8.) See below, for the numbering of bits within a byte. - - 1.6. Changes from previous versions - - Version 3.1 was the first public release of this specification. - In version 3.2, some terminology was changed and the Adler-32 - sample code was rewritten for clarity. In version 3.3, the - support for a preset dictionary was introduced, and the - specification was converted to RFC style. - -2. Detailed specification - - 2.1. Overall conventions - - In the diagrams below, a box like this: - - +---+ - | | <-- the vertical bars might be missing - +---+ - - - - -Deutsch & Gailly Informational [Page 3] - -RFC 1950 ZLIB Compressed Data Format Specification May 1996 - - - represents one byte; a box like this: - - +==============+ - | | - +==============+ - - represents a variable number of bytes. - - Bytes stored within a computer do not have a "bit order", since - they are always treated as a unit. However, a byte considered as - an integer between 0 and 255 does have a most- and least- - significant bit, and since we write numbers with the most- - significant digit on the left, we also write bytes with the most- - significant bit on the left. In the diagrams below, we number the - bits of a byte so that bit 0 is the least-significant bit, i.e., - the bits are numbered: - - +--------+ - |76543210| - +--------+ - - Within a computer, a number may occupy multiple bytes. All - multi-byte numbers in the format described here are stored with - the MOST-significant byte first (at the lower memory address). - For example, the decimal number 520 is stored as: - - 0 1 - +--------+--------+ - |00000010|00001000| - +--------+--------+ - ^ ^ - | | - | + less significant byte = 8 - + more significant byte = 2 x 256 - - 2.2. Data format - - A zlib stream has the following structure: - - 0 1 - +---+---+ - |CMF|FLG| (more-->) - +---+---+ - - - - - - - - -Deutsch & Gailly Informational [Page 4] - -RFC 1950 ZLIB Compressed Data Format Specification May 1996 - - - (if FLG.FDICT set) - - 0 1 2 3 - +---+---+---+---+ - | DICTID | (more-->) - +---+---+---+---+ - - +=====================+---+---+---+---+ - |...compressed data...| ADLER32 | - +=====================+---+---+---+---+ - - Any data which may appear after ADLER32 are not part of the zlib - stream. - - CMF (Compression Method and flags) - This byte is divided into a 4-bit compression method and a 4- - bit information field depending on the compression method. - - bits 0 to 3 CM Compression method - bits 4 to 7 CINFO Compression info - - CM (Compression method) - This identifies the compression method used in the file. CM = 8 - denotes the "deflate" compression method with a window size up - to 32K. This is the method used by gzip and PNG (see - references [1] and [2] in Chapter 3, below, for the reference - documents). CM = 15 is reserved. It might be used in a future - version of this specification to indicate the presence of an - extra field before the compressed data. - - CINFO (Compression info) - For CM = 8, CINFO is the base-2 logarithm of the LZ77 window - size, minus eight (CINFO=7 indicates a 32K window size). Values - of CINFO above 7 are not allowed in this version of the - specification. CINFO is not defined in this specification for - CM not equal to 8. - - FLG (FLaGs) - This flag byte is divided as follows: - - bits 0 to 4 FCHECK (check bits for CMF and FLG) - bit 5 FDICT (preset dictionary) - bits 6 to 7 FLEVEL (compression level) - - The FCHECK value must be such that CMF and FLG, when viewed as - a 16-bit unsigned integer stored in MSB order (CMF*256 + FLG), - is a multiple of 31. - - - - -Deutsch & Gailly Informational [Page 5] - -RFC 1950 ZLIB Compressed Data Format Specification May 1996 - - - FDICT (Preset dictionary) - If FDICT is set, a DICT dictionary identifier is present - immediately after the FLG byte. The dictionary is a sequence of - bytes which are initially fed to the compressor without - producing any compressed output. DICT is the Adler-32 checksum - of this sequence of bytes (see the definition of ADLER32 - below). The decompressor can use this identifier to determine - which dictionary has been used by the compressor. - - FLEVEL (Compression level) - These flags are available for use by specific compression - methods. The "deflate" method (CM = 8) sets these flags as - follows: - - 0 - compressor used fastest algorithm - 1 - compressor used fast algorithm - 2 - compressor used default algorithm - 3 - compressor used maximum compression, slowest algorithm - - The information in FLEVEL is not needed for decompression; it - is there to indicate if recompression might be worthwhile. - - compressed data - For compression method 8, the compressed data is stored in the - deflate compressed data format as described in the document - "DEFLATE Compressed Data Format Specification" by L. Peter - Deutsch. (See reference [3] in Chapter 3, below) - - Other compressed data formats are not specified in this version - of the zlib specification. - - ADLER32 (Adler-32 checksum) - This contains a checksum value of the uncompressed data - (excluding any dictionary data) computed according to Adler-32 - algorithm. This algorithm is a 32-bit extension and improvement - of the Fletcher algorithm, used in the ITU-T X.224 / ISO 8073 - standard. See references [4] and [5] in Chapter 3, below) - - Adler-32 is composed of two sums accumulated per byte: s1 is - the sum of all bytes, s2 is the sum of all s1 values. Both sums - are done modulo 65521. s1 is initialized to 1, s2 to zero. The - Adler-32 checksum is stored as s2*65536 + s1 in most- - significant-byte first (network) order. - - - - - - - - -Deutsch & Gailly Informational [Page 6] - -RFC 1950 ZLIB Compressed Data Format Specification May 1996 - - - 2.3. Compliance - - A compliant compressor must produce streams with correct CMF, FLG - and ADLER32, but need not support preset dictionaries. When the - zlib data format is used as part of another standard data format, - the compressor may use only preset dictionaries that are specified - by this other data format. If this other format does not use the - preset dictionary feature, the compressor must not set the FDICT - flag. - - A compliant decompressor must check CMF, FLG, and ADLER32, and - provide an error indication if any of these have incorrect values. - A compliant decompressor must give an error indication if CM is - not one of the values defined in this specification (only the - value 8 is permitted in this version), since another value could - indicate the presence of new features that would cause subsequent - data to be interpreted incorrectly. A compliant decompressor must - give an error indication if FDICT is set and DICTID is not the - identifier of a known preset dictionary. A decompressor may - ignore FLEVEL and still be compliant. When the zlib data format - is being used as a part of another standard format, a compliant - decompressor must support all the preset dictionaries specified by - the other format. When the other format does not use the preset - dictionary feature, a compliant decompressor must reject any - stream in which the FDICT flag is set. - -3. References - - [1] Deutsch, L.P.,"GZIP Compressed Data Format Specification", - available in ftp://ftp.uu.net/pub/archiving/zip/doc/ - - [2] Thomas Boutell, "PNG (Portable Network Graphics) specification", - available in ftp://ftp.uu.net/graphics/png/documents/ - - [3] Deutsch, L.P.,"DEFLATE Compressed Data Format Specification", - available in ftp://ftp.uu.net/pub/archiving/zip/doc/ - - [4] Fletcher, J. G., "An Arithmetic Checksum for Serial - Transmissions," IEEE Transactions on Communications, Vol. COM-30, - No. 1, January 1982, pp. 247-252. - - [5] ITU-T Recommendation X.224, Annex D, "Checksum Algorithms," - November, 1993, pp. 144, 145. (Available from - gopher://info.itu.ch). ITU-T X.244 is also the same as ISO 8073. - - - - - - - -Deutsch & Gailly Informational [Page 7] - -RFC 1950 ZLIB Compressed Data Format Specification May 1996 - - -4. Source code - - Source code for a C language implementation of a "zlib" compliant - library is available at ftp://ftp.uu.net/pub/archiving/zip/zlib/. - -5. Security Considerations - - A decoder that fails to check the ADLER32 checksum value may be - subject to undetected data corruption. - -6. Acknowledgements - - Trademarks cited in this document are the property of their - respective owners. - - Jean-Loup Gailly and Mark Adler designed the zlib format and wrote - the related software described in this specification. Glenn - Randers-Pehrson converted this document to RFC and HTML format. - -7. Authors' Addresses - - L. Peter Deutsch - Aladdin Enterprises - 203 Santa Margarita Ave. - Menlo Park, CA 94025 - - Phone: (415) 322-0103 (AM only) - FAX: (415) 322-1734 - EMail: - - - Jean-Loup Gailly - - EMail: - - Questions about the technical content of this specification can be - sent by email to - - Jean-Loup Gailly and - Mark Adler - - Editorial comments on this specification can be sent by email to - - L. Peter Deutsch and - Glenn Randers-Pehrson - - - - - - -Deutsch & Gailly Informational [Page 8] - -RFC 1950 ZLIB Compressed Data Format Specification May 1996 - - -8. Appendix: Rationale - - 8.1. Preset dictionaries - - A preset dictionary is specially useful to compress short input - sequences. The compressor can take advantage of the dictionary - context to encode the input in a more compact manner. The - decompressor can be initialized with the appropriate context by - virtually decompressing a compressed version of the dictionary - without producing any output. However for certain compression - algorithms such as the deflate algorithm this operation can be - achieved without actually performing any decompression. - - The compressor and the decompressor must use exactly the same - dictionary. The dictionary may be fixed or may be chosen among a - certain number of predefined dictionaries, according to the kind - of input data. The decompressor can determine which dictionary has - been chosen by the compressor by checking the dictionary - identifier. This document does not specify the contents of - predefined dictionaries, since the optimal dictionaries are - application specific. Standard data formats using this feature of - the zlib specification must precisely define the allowed - dictionaries. - - 8.2. The Adler-32 algorithm - - The Adler-32 algorithm is much faster than the CRC32 algorithm yet - still provides an extremely low probability of undetected errors. - - The modulo on unsigned long accumulators can be delayed for 5552 - bytes, so the modulo operation time is negligible. If the bytes - are a, b, c, the second sum is 3a + 2b + c + 3, and so is position - and order sensitive, unlike the first sum, which is just a - checksum. That 65521 is prime is important to avoid a possible - large class of two-byte errors that leave the check unchanged. - (The Fletcher checksum uses 255, which is not prime and which also - makes the Fletcher check insensitive to single byte changes 0 <-> - 255.) - - The sum s1 is initialized to 1 instead of zero to make the length - of the sequence part of s2, so that the length does not have to be - checked separately. (Any sequence of zeroes has a Fletcher - checksum of zero.) - - - - - - - - -Deutsch & Gailly Informational [Page 9] - -RFC 1950 ZLIB Compressed Data Format Specification May 1996 - - -9. Appendix: Sample code - - The following C code computes the Adler-32 checksum of a data buffer. - It is written for clarity, not for speed. The sample code is in the - ANSI C programming language. Non C users may find it easier to read - with these hints: - - & Bitwise AND operator. - >> Bitwise right shift operator. When applied to an - unsigned quantity, as here, right shift inserts zero bit(s) - at the left. - << Bitwise left shift operator. Left shift inserts zero - bit(s) at the right. - ++ "n++" increments the variable n. - % modulo operator: a % b is the remainder of a divided by b. - - #define BASE 65521 /* largest prime smaller than 65536 */ - - /* - Update a running Adler-32 checksum with the bytes buf[0..len-1] - and return the updated checksum. The Adler-32 checksum should be - initialized to 1. - - Usage example: - - unsigned long adler = 1L; - - while (read_buffer(buffer, length) != EOF) { - adler = update_adler32(adler, buffer, length); - } - if (adler != original_adler) error(); - */ - unsigned long update_adler32(unsigned long adler, - unsigned char *buf, int len) - { - unsigned long s1 = adler & 0xffff; - unsigned long s2 = (adler >> 16) & 0xffff; - int n; - - for (n = 0; n < len; n++) { - s1 = (s1 + buf[n]) % BASE; - s2 = (s2 + s1) % BASE; - } - return (s2 << 16) + s1; - } - - /* Return the adler32 of the bytes buf[0..len-1] */ - - - - -Deutsch & Gailly Informational [Page 10] - -RFC 1950 ZLIB Compressed Data Format Specification May 1996 - - - unsigned long adler32(unsigned char *buf, int len) - { - return update_adler32(1L, buf, len); - } - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -Deutsch & Gailly Informational [Page 11] - diff --git a/libs/zlibng/doc/rfc1951.txt b/libs/zlibng/doc/rfc1951.txt deleted file mode 100644 index 403c8c722..000000000 --- a/libs/zlibng/doc/rfc1951.txt +++ /dev/null @@ -1,955 +0,0 @@ - - - - - - -Network Working Group P. Deutsch -Request for Comments: 1951 Aladdin Enterprises -Category: Informational May 1996 - - - DEFLATE Compressed Data Format Specification version 1.3 - -Status of This Memo - - This memo provides information for the Internet community. This memo - does not specify an Internet standard of any kind. Distribution of - this memo is unlimited. - -IESG Note: - - The IESG takes no position on the validity of any Intellectual - Property Rights statements contained in this document. - -Notices - - Copyright (c) 1996 L. Peter Deutsch - - Permission is granted to copy and distribute this document for any - purpose and without charge, including translations into other - languages and incorporation into compilations, provided that the - copyright notice and this notice are preserved, and that any - substantive changes or deletions from the original are clearly - marked. - - A pointer to the latest version of this and related documentation in - HTML format can be found at the URL - . - -Abstract - - This specification defines a lossless compressed data format that - compresses data using a combination of the LZ77 algorithm and Huffman - coding, with efficiency comparable to the best currently available - general-purpose compression methods. The data can be produced or - consumed, even for an arbitrarily long sequentially presented input - data stream, using only an a priori bounded amount of intermediate - storage. The format can be implemented readily in a manner not - covered by patents. - - - - - - - - -Deutsch Informational [Page 1] - -RFC 1951 DEFLATE Compressed Data Format Specification May 1996 - - -Table of Contents - - 1. Introduction ................................................... 2 - 1.1. Purpose ................................................... 2 - 1.2. Intended audience ......................................... 3 - 1.3. Scope ..................................................... 3 - 1.4. Compliance ................................................ 3 - 1.5. Definitions of terms and conventions used ................ 3 - 1.6. Changes from previous versions ............................ 4 - 2. Compressed representation overview ............................. 4 - 3. Detailed specification ......................................... 5 - 3.1. Overall conventions ....................................... 5 - 3.1.1. Packing into bytes .................................. 5 - 3.2. Compressed block format ................................... 6 - 3.2.1. Synopsis of prefix and Huffman coding ............... 6 - 3.2.2. Use of Huffman coding in the "deflate" format ....... 7 - 3.2.3. Details of block format ............................. 9 - 3.2.4. Non-compressed blocks (BTYPE=00) ................... 11 - 3.2.5. Compressed blocks (length and distance codes) ...... 11 - 3.2.6. Compression with fixed Huffman codes (BTYPE=01) .... 12 - 3.2.7. Compression with dynamic Huffman codes (BTYPE=10) .. 13 - 3.3. Compliance ............................................... 14 - 4. Compression algorithm details ................................. 14 - 5. References .................................................... 16 - 6. Security Considerations ....................................... 16 - 7. Source code ................................................... 16 - 8. Acknowledgements .............................................. 16 - 9. Author's Address .............................................. 17 - -1. Introduction - - 1.1. Purpose - - The purpose of this specification is to define a lossless - compressed data format that: - * Is independent of CPU type, operating system, file system, - and character set, and hence can be used for interchange; - * Can be produced or consumed, even for an arbitrarily long - sequentially presented input data stream, using only an a - priori bounded amount of intermediate storage, and hence - can be used in data communications or similar structures - such as Unix filters; - * Compresses data with efficiency comparable to the best - currently available general-purpose compression methods, - and in particular considerably better than the "compress" - program; - * Can be implemented readily in a manner not covered by - patents, and hence can be practiced freely; - - - -Deutsch Informational [Page 2] - -RFC 1951 DEFLATE Compressed Data Format Specification May 1996 - - - * Is compatible with the file format produced by the current - widely used gzip utility, in that conforming decompressors - will be able to read data produced by the existing gzip - compressor. - - The data format defined by this specification does not attempt to: - - * Allow random access to compressed data; - * Compress specialized data (e.g., raster graphics) as well - as the best currently available specialized algorithms. - - A simple counting argument shows that no lossless compression - algorithm can compress every possible input data set. For the - format defined here, the worst case expansion is 5 bytes per 32K- - byte block, i.e., a size increase of 0.015% for large data sets. - English text usually compresses by a factor of 2.5 to 3; - executable files usually compress somewhat less; graphical data - such as raster images may compress much more. - - 1.2. Intended audience - - This specification is intended for use by implementors of software - to compress data into "deflate" format and/or decompress data from - "deflate" format. - - The text of the specification assumes a basic background in - programming at the level of bits and other primitive data - representations. Familiarity with the technique of Huffman coding - is helpful but not required. - - 1.3. Scope - - The specification specifies a method for representing a sequence - of bytes as a (usually shorter) sequence of bits, and a method for - packing the latter bit sequence into bytes. - - 1.4. Compliance - - Unless otherwise indicated below, a compliant decompressor must be - able to accept and decompress any data set that conforms to all - the specifications presented here; a compliant compressor must - produce data sets that conform to all the specifications presented - here. - - 1.5. Definitions of terms and conventions used - - Byte: 8 bits stored or transmitted as a unit (same as an octet). - For this specification, a byte is exactly 8 bits, even on machines - - - -Deutsch Informational [Page 3] - -RFC 1951 DEFLATE Compressed Data Format Specification May 1996 - - - which store a character on a number of bits different from eight. - See below, for the numbering of bits within a byte. - - String: a sequence of arbitrary bytes. - - 1.6. Changes from previous versions - - There have been no technical changes to the deflate format since - version 1.1 of this specification. In version 1.2, some - terminology was changed. Version 1.3 is a conversion of the - specification to RFC style. - -2. Compressed representation overview - - A compressed data set consists of a series of blocks, corresponding - to successive blocks of input data. The block sizes are arbitrary, - except that non-compressible blocks are limited to 65,535 bytes. - - Each block is compressed using a combination of the LZ77 algorithm - and Huffman coding. The Huffman trees for each block are independent - of those for previous or subsequent blocks; the LZ77 algorithm may - use a reference to a duplicated string occurring in a previous block, - up to 32K input bytes before. - - Each block consists of two parts: a pair of Huffman code trees that - describe the representation of the compressed data part, and a - compressed data part. (The Huffman trees themselves are compressed - using Huffman encoding.) The compressed data consists of a series of - elements of two types: literal bytes (of strings that have not been - detected as duplicated within the previous 32K input bytes), and - pointers to duplicated strings, where a pointer is represented as a - pair . The representation used in the - "deflate" format limits distances to 32K bytes and lengths to 258 - bytes, but does not limit the size of a block, except for - uncompressible blocks, which are limited as noted above. - - Each type of value (literals, distances, and lengths) in the - compressed data is represented using a Huffman code, using one code - tree for literals and lengths and a separate code tree for distances. - The code trees for each block appear in a compact form just before - the compressed data for that block. - - - - - - - - - - -Deutsch Informational [Page 4] - -RFC 1951 DEFLATE Compressed Data Format Specification May 1996 - - -3. Detailed specification - - 3.1. Overall conventions In the diagrams below, a box like this: - - +---+ - | | <-- the vertical bars might be missing - +---+ - - represents one byte; a box like this: - - +==============+ - | | - +==============+ - - represents a variable number of bytes. - - Bytes stored within a computer do not have a "bit order", since - they are always treated as a unit. However, a byte considered as - an integer between 0 and 255 does have a most- and least- - significant bit, and since we write numbers with the most- - significant digit on the left, we also write bytes with the most- - significant bit on the left. In the diagrams below, we number the - bits of a byte so that bit 0 is the least-significant bit, i.e., - the bits are numbered: - - +--------+ - |76543210| - +--------+ - - Within a computer, a number may occupy multiple bytes. All - multi-byte numbers in the format described here are stored with - the least-significant byte first (at the lower memory address). - For example, the decimal number 520 is stored as: - - 0 1 - +--------+--------+ - |00001000|00000010| - +--------+--------+ - ^ ^ - | | - | + more significant byte = 2 x 256 - + less significant byte = 8 - - 3.1.1. Packing into bytes - - This document does not address the issue of the order in which - bits of a byte are transmitted on a bit-sequential medium, - since the final data format described here is byte- rather than - - - -Deutsch Informational [Page 5] - -RFC 1951 DEFLATE Compressed Data Format Specification May 1996 - - - bit-oriented. However, we describe the compressed block format - in below, as a sequence of data elements of various bit - lengths, not a sequence of bytes. We must therefore specify - how to pack these data elements into bytes to form the final - compressed byte sequence: - - * Data elements are packed into bytes in order of - increasing bit number within the byte, i.e., starting - with the least-significant bit of the byte. - * Data elements other than Huffman codes are packed - starting with the least-significant bit of the data - element. - * Huffman codes are packed starting with the most- - significant bit of the code. - - In other words, if one were to print out the compressed data as - a sequence of bytes, starting with the first byte at the - *right* margin and proceeding to the *left*, with the most- - significant bit of each byte on the left as usual, one would be - able to parse the result from right to left, with fixed-width - elements in the correct MSB-to-LSB order and Huffman codes in - bit-reversed order (i.e., with the first bit of the code in the - relative LSB position). - - 3.2. Compressed block format - - 3.2.1. Synopsis of prefix and Huffman coding - - Prefix coding represents symbols from an a priori known - alphabet by bit sequences (codes), one code for each symbol, in - a manner such that different symbols may be represented by bit - sequences of different lengths, but a parser can always parse - an encoded string unambiguously symbol-by-symbol. - - We define a prefix code in terms of a binary tree in which the - two edges descending from each non-leaf node are labeled 0 and - 1 and in which the leaf nodes correspond one-for-one with (are - labeled with) the symbols of the alphabet; then the code for a - symbol is the sequence of 0's and 1's on the edges leading from - the root to the leaf labeled with that symbol. For example: - - - - - - - - - - - -Deutsch Informational [Page 6] - -RFC 1951 DEFLATE Compressed Data Format Specification May 1996 - - - /\ Symbol Code - 0 1 ------ ---- - / \ A 00 - /\ B B 1 - 0 1 C 011 - / \ D 010 - A /\ - 0 1 - / \ - D C - - A parser can decode the next symbol from an encoded input - stream by walking down the tree from the root, at each step - choosing the edge corresponding to the next input bit. - - Given an alphabet with known symbol frequencies, the Huffman - algorithm allows the construction of an optimal prefix code - (one which represents strings with those symbol frequencies - using the fewest bits of any possible prefix codes for that - alphabet). Such a code is called a Huffman code. (See - reference [1] in Chapter 5, references for additional - information on Huffman codes.) - - Note that in the "deflate" format, the Huffman codes for the - various alphabets must not exceed certain maximum code lengths. - This constraint complicates the algorithm for computing code - lengths from symbol frequencies. Again, see Chapter 5, - references for details. - - 3.2.2. Use of Huffman coding in the "deflate" format - - The Huffman codes used for each alphabet in the "deflate" - format have two additional rules: - - * All codes of a given bit length have lexicographically - consecutive values, in the same order as the symbols - they represent; - - * Shorter codes lexicographically precede longer codes. - - - - - - - - - - - - -Deutsch Informational [Page 7] - -RFC 1951 DEFLATE Compressed Data Format Specification May 1996 - - - We could recode the example above to follow this rule as - follows, assuming that the order of the alphabet is ABCD: - - Symbol Code - ------ ---- - A 10 - B 0 - C 110 - D 111 - - I.e., 0 precedes 10 which precedes 11x, and 110 and 111 are - lexicographically consecutive. - - Given this rule, we can define the Huffman code for an alphabet - just by giving the bit lengths of the codes for each symbol of - the alphabet in order; this is sufficient to determine the - actual codes. In our example, the code is completely defined - by the sequence of bit lengths (2, 1, 3, 3). The following - algorithm generates the codes as integers, intended to be read - from most- to least-significant bit. The code lengths are - initially in tree[I].Len; the codes are produced in - tree[I].Code. - - 1) Count the number of codes for each code length. Let - bl_count[N] be the number of codes of length N, N >= 1. - - 2) Find the numerical value of the smallest code for each - code length: - - code = 0; - bl_count[0] = 0; - for (bits = 1; bits <= MAX_BITS; bits++) { - code = (code + bl_count[bits-1]) << 1; - next_code[bits] = code; - } - - 3) Assign numerical values to all codes, using consecutive - values for all codes of the same length with the base - values determined at step 2. Codes that are never used - (which have a bit length of zero) must not be assigned a - value. - - for (n = 0; n <= max_code; n++) { - len = tree[n].Len; - if (len != 0) { - tree[n].Code = next_code[len]; - next_code[len]++; - } - - - -Deutsch Informational [Page 8] - -RFC 1951 DEFLATE Compressed Data Format Specification May 1996 - - - } - - Example: - - Consider the alphabet ABCDEFGH, with bit lengths (3, 3, 3, 3, - 3, 2, 4, 4). After step 1, we have: - - N bl_count[N] - - ----------- - 2 1 - 3 5 - 4 2 - - Step 2 computes the following next_code values: - - N next_code[N] - - ------------ - 1 0 - 2 0 - 3 2 - 4 14 - - Step 3 produces the following code values: - - Symbol Length Code - ------ ------ ---- - A 3 010 - B 3 011 - C 3 100 - D 3 101 - E 3 110 - F 2 00 - G 4 1110 - H 4 1111 - - 3.2.3. Details of block format - - Each block of compressed data begins with 3 header bits - containing the following data: - - first bit BFINAL - next 2 bits BTYPE - - Note that the header bits do not necessarily begin on a byte - boundary, since a block does not necessarily occupy an integral - number of bytes. - - - - - -Deutsch Informational [Page 9] - -RFC 1951 DEFLATE Compressed Data Format Specification May 1996 - - - BFINAL is set if and only if this is the last block of the data - set. - - BTYPE specifies how the data are compressed, as follows: - - 00 - no compression - 01 - compressed with fixed Huffman codes - 10 - compressed with dynamic Huffman codes - 11 - reserved (error) - - The only difference between the two compressed cases is how the - Huffman codes for the literal/length and distance alphabets are - defined. - - In all cases, the decoding algorithm for the actual data is as - follows: - - do - read block header from input stream. - if stored with no compression - skip any remaining bits in current partially - processed byte - read LEN and NLEN (see next section) - copy LEN bytes of data to output - otherwise - if compressed with dynamic Huffman codes - read representation of code trees (see - subsection below) - loop (until end of block code recognized) - decode literal/length value from input stream - if value < 256 - copy value (literal byte) to output stream - otherwise - if value = end of block (256) - break from loop - otherwise (value = 257..285) - decode distance from input stream - - move backwards distance bytes in the output - stream, and copy length bytes from this - position to the output stream. - end loop - while not last block - - Note that a duplicated string reference may refer to a string - in a previous block; i.e., the backward distance may cross one - or more block boundaries. However a distance cannot refer past - the beginning of the output stream. (An application using a - - - -Deutsch Informational [Page 10] - -RFC 1951 DEFLATE Compressed Data Format Specification May 1996 - - - preset dictionary might discard part of the output stream; a - distance can refer to that part of the output stream anyway) - Note also that the referenced string may overlap the current - position; for example, if the last 2 bytes decoded have values - X and Y, a string reference with - adds X,Y,X,Y,X to the output stream. - - We now specify each compression method in turn. - - 3.2.4. Non-compressed blocks (BTYPE=00) - - Any bits of input up to the next byte boundary are ignored. - The rest of the block consists of the following information: - - 0 1 2 3 4... - +---+---+---+---+================================+ - | LEN | NLEN |... LEN bytes of literal data...| - +---+---+---+---+================================+ - - LEN is the number of data bytes in the block. NLEN is the - one's complement of LEN. - - 3.2.5. Compressed blocks (length and distance codes) - - As noted above, encoded data blocks in the "deflate" format - consist of sequences of symbols drawn from three conceptually - distinct alphabets: either literal bytes, from the alphabet of - byte values (0..255), or pairs, - where the length is drawn from (3..258) and the distance is - drawn from (1..32,768). In fact, the literal and length - alphabets are merged into a single alphabet (0..285), where - values 0..255 represent literal bytes, the value 256 indicates - end-of-block, and values 257..285 represent length codes - (possibly in conjunction with extra bits following the symbol - code) as follows: - - - - - - - - - - - - - - - - -Deutsch Informational [Page 11] - -RFC 1951 DEFLATE Compressed Data Format Specification May 1996 - - - Extra Extra Extra - Code Bits Length(s) Code Bits Lengths Code Bits Length(s) - ---- ---- ------ ---- ---- ------- ---- ---- ------- - 257 0 3 267 1 15,16 277 4 67-82 - 258 0 4 268 1 17,18 278 4 83-98 - 259 0 5 269 2 19-22 279 4 99-114 - 260 0 6 270 2 23-26 280 4 115-130 - 261 0 7 271 2 27-30 281 5 131-162 - 262 0 8 272 2 31-34 282 5 163-194 - 263 0 9 273 3 35-42 283 5 195-226 - 264 0 10 274 3 43-50 284 5 227-257 - 265 1 11,12 275 3 51-58 285 0 258 - 266 1 13,14 276 3 59-66 - - The extra bits should be interpreted as a machine integer - stored with the most-significant bit first, e.g., bits 1110 - represent the value 14. - - Extra Extra Extra - Code Bits Dist Code Bits Dist Code Bits Distance - ---- ---- ---- ---- ---- ------ ---- ---- -------- - 0 0 1 10 4 33-48 20 9 1025-1536 - 1 0 2 11 4 49-64 21 9 1537-2048 - 2 0 3 12 5 65-96 22 10 2049-3072 - 3 0 4 13 5 97-128 23 10 3073-4096 - 4 1 5,6 14 6 129-192 24 11 4097-6144 - 5 1 7,8 15 6 193-256 25 11 6145-8192 - 6 2 9-12 16 7 257-384 26 12 8193-12288 - 7 2 13-16 17 7 385-512 27 12 12289-16384 - 8 3 17-24 18 8 513-768 28 13 16385-24576 - 9 3 25-32 19 8 769-1024 29 13 24577-32768 - - 3.2.6. Compression with fixed Huffman codes (BTYPE=01) - - The Huffman codes for the two alphabets are fixed, and are not - represented explicitly in the data. The Huffman code lengths - for the literal/length alphabet are: - - Lit Value Bits Codes - --------- ---- ----- - 0 - 143 8 00110000 through - 10111111 - 144 - 255 9 110010000 through - 111111111 - 256 - 279 7 0000000 through - 0010111 - 280 - 287 8 11000000 through - 11000111 - - - -Deutsch Informational [Page 12] - -RFC 1951 DEFLATE Compressed Data Format Specification May 1996 - - - The code lengths are sufficient to generate the actual codes, - as described above; we show the codes in the table for added - clarity. Literal/length values 286-287 will never actually - occur in the compressed data, but participate in the code - construction. - - Distance codes 0-31 are represented by (fixed-length) 5-bit - codes, with possible additional bits as shown in the table - shown in Paragraph 3.2.5, above. Note that distance codes 30- - 31 will never actually occur in the compressed data. - - 3.2.7. Compression with dynamic Huffman codes (BTYPE=10) - - The Huffman codes for the two alphabets appear in the block - immediately after the header bits and before the actual - compressed data, first the literal/length code and then the - distance code. Each code is defined by a sequence of code - lengths, as discussed in Paragraph 3.2.2, above. For even - greater compactness, the code length sequences themselves are - compressed using a Huffman code. The alphabet for code lengths - is as follows: - - 0 - 15: Represent code lengths of 0 - 15 - 16: Copy the previous code length 3 - 6 times. - The next 2 bits indicate repeat length - (0 = 3, ... , 3 = 6) - Example: Codes 8, 16 (+2 bits 11), - 16 (+2 bits 10) will expand to - 12 code lengths of 8 (1 + 6 + 5) - 17: Repeat a code length of 0 for 3 - 10 times. - (3 bits of length) - 18: Repeat a code length of 0 for 11 - 138 times - (7 bits of length) - - A code length of 0 indicates that the corresponding symbol in - the literal/length or distance alphabet will not occur in the - block, and should not participate in the Huffman code - construction algorithm given earlier. If only one distance - code is used, it is encoded using one bit, not zero bits; in - this case there is a single code length of one, with one unused - code. One distance code of zero bits means that there are no - distance codes used at all (the data is all literals). - - We can now define the format of the block: - - 5 Bits: HLIT, # of Literal/Length codes - 257 (257 - 286) - 5 Bits: HDIST, # of Distance codes - 1 (1 - 32) - 4 Bits: HCLEN, # of Code Length codes - 4 (4 - 19) - - - -Deutsch Informational [Page 13] - -RFC 1951 DEFLATE Compressed Data Format Specification May 1996 - - - (HCLEN + 4) x 3 bits: code lengths for the code length - alphabet given just above, in the order: 16, 17, 18, - 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 - - These code lengths are interpreted as 3-bit integers - (0-7); as above, a code length of 0 means the - corresponding symbol (literal/length or distance code - length) is not used. - - HLIT + 257 code lengths for the literal/length alphabet, - encoded using the code length Huffman code - - HDIST + 1 code lengths for the distance alphabet, - encoded using the code length Huffman code - - The actual compressed data of the block, - encoded using the literal/length and distance Huffman - codes - - The literal/length symbol 256 (end of data), - encoded using the literal/length Huffman code - - The code length repeat codes can cross from HLIT + 257 to the - HDIST + 1 code lengths. In other words, all code lengths form - a single sequence of HLIT + HDIST + 258 values. - - 3.3. Compliance - - A compressor may limit further the ranges of values specified in - the previous section and still be compliant; for example, it may - limit the range of backward pointers to some value smaller than - 32K. Similarly, a compressor may limit the size of blocks so that - a compressible block fits in memory. - - A compliant decompressor must accept the full range of possible - values defined in the previous section, and must accept blocks of - arbitrary size. - -4. Compression algorithm details - - While it is the intent of this document to define the "deflate" - compressed data format without reference to any particular - compression algorithm, the format is related to the compressed - formats produced by LZ77 (Lempel-Ziv 1977, see reference [2] below); - since many variations of LZ77 are patented, it is strongly - recommended that the implementor of a compressor follow the general - algorithm presented here, which is known not to be patented per se. - The material in this section is not part of the definition of the - - - -Deutsch Informational [Page 14] - -RFC 1951 DEFLATE Compressed Data Format Specification May 1996 - - - specification per se, and a compressor need not follow it in order to - be compliant. - - The compressor terminates a block when it determines that starting a - new block with fresh trees would be useful, or when the block size - fills up the compressor's block buffer. - - The compressor uses a chained hash table to find duplicated strings, - using a hash function that operates on 3-byte sequences. At any - given point during compression, let XYZ be the next 3 input bytes to - be examined (not necessarily all different, of course). First, the - compressor examines the hash chain for XYZ. If the chain is empty, - the compressor simply writes out X as a literal byte and advances one - byte in the input. If the hash chain is not empty, indicating that - the sequence XYZ (or, if we are unlucky, some other 3 bytes with the - same hash function value) has occurred recently, the compressor - compares all strings on the XYZ hash chain with the actual input data - sequence starting at the current point, and selects the longest - match. - - The compressor searches the hash chains starting with the most recent - strings, to favor small distances and thus take advantage of the - Huffman encoding. The hash chains are singly linked. There are no - deletions from the hash chains; the algorithm simply discards matches - that are too old. To avoid a worst-case situation, very long hash - chains are arbitrarily truncated at a certain length, determined by a - run-time parameter. - - To improve overall compression, the compressor optionally defers the - selection of matches ("lazy matching"): after a match of length N has - been found, the compressor searches for a longer match starting at - the next input byte. If it finds a longer match, it truncates the - previous match to a length of one (thus producing a single literal - byte) and then emits the longer match. Otherwise, it emits the - original match, and, as described above, advances N bytes before - continuing. - - Run-time parameters also control this "lazy match" procedure. If - compression ratio is most important, the compressor attempts a - complete second search regardless of the length of the first match. - In the normal case, if the current match is "long enough", the - compressor reduces the search for a longer match, thus speeding up - the process. If speed is most important, the compressor inserts new - strings in the hash table only when no match was found, or when the - match is not "too long". This degrades the compression ratio but - saves time since there are both fewer insertions and fewer searches. - - - - - -Deutsch Informational [Page 15] - -RFC 1951 DEFLATE Compressed Data Format Specification May 1996 - - -5. References - - [1] Huffman, D. A., "A Method for the Construction of Minimum - Redundancy Codes", Proceedings of the Institute of Radio - Engineers, September 1952, Volume 40, Number 9, pp. 1098-1101. - - [2] Ziv J., Lempel A., "A Universal Algorithm for Sequential Data - Compression", IEEE Transactions on Information Theory, Vol. 23, - No. 3, pp. 337-343. - - [3] Gailly, J.-L., and Adler, M., ZLIB documentation and sources, - available in ftp://ftp.uu.net/pub/archiving/zip/doc/ - - [4] Gailly, J.-L., and Adler, M., GZIP documentation and sources, - available as gzip-*.tar in ftp://prep.ai.mit.edu/pub/gnu/ - - [5] Schwartz, E. S., and Kallick, B. "Generating a canonical prefix - encoding." Comm. ACM, 7,3 (Mar. 1964), pp. 166-169. - - [6] Hirschberg and Lelewer, "Efficient decoding of prefix codes," - Comm. ACM, 33,4, April 1990, pp. 449-459. - -6. Security Considerations - - Any data compression method involves the reduction of redundancy in - the data. Consequently, any corruption of the data is likely to have - severe effects and be difficult to correct. Uncompressed text, on - the other hand, will probably still be readable despite the presence - of some corrupted bytes. - - It is recommended that systems using this data format provide some - means of validating the integrity of the compressed data. See - reference [3], for example. - -7. Source code - - Source code for a C language implementation of a "deflate" compliant - compressor and decompressor is available within the zlib package at - ftp://ftp.uu.net/pub/archiving/zip/zlib/. - -8. Acknowledgements - - Trademarks cited in this document are the property of their - respective owners. - - Phil Katz designed the deflate format. Jean-Loup Gailly and Mark - Adler wrote the related software described in this specification. - Glenn Randers-Pehrson converted this document to RFC and HTML format. - - - -Deutsch Informational [Page 16] - -RFC 1951 DEFLATE Compressed Data Format Specification May 1996 - - -9. Author's Address - - L. Peter Deutsch - Aladdin Enterprises - 203 Santa Margarita Ave. - Menlo Park, CA 94025 - - Phone: (415) 322-0103 (AM only) - FAX: (415) 322-1734 - EMail: - - Questions about the technical content of this specification can be - sent by email to: - - Jean-Loup Gailly and - Mark Adler - - Editorial comments on this specification can be sent by email to: - - L. Peter Deutsch and - Glenn Randers-Pehrson - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -Deutsch Informational [Page 17] - diff --git a/libs/zlibng/doc/rfc1952.txt b/libs/zlibng/doc/rfc1952.txt deleted file mode 100644 index a8e51b456..000000000 --- a/libs/zlibng/doc/rfc1952.txt +++ /dev/null @@ -1,675 +0,0 @@ - - - - - - -Network Working Group P. Deutsch -Request for Comments: 1952 Aladdin Enterprises -Category: Informational May 1996 - - - GZIP file format specification version 4.3 - -Status of This Memo - - This memo provides information for the Internet community. This memo - does not specify an Internet standard of any kind. Distribution of - this memo is unlimited. - -IESG Note: - - The IESG takes no position on the validity of any Intellectual - Property Rights statements contained in this document. - -Notices - - Copyright (c) 1996 L. Peter Deutsch - - Permission is granted to copy and distribute this document for any - purpose and without charge, including translations into other - languages and incorporation into compilations, provided that the - copyright notice and this notice are preserved, and that any - substantive changes or deletions from the original are clearly - marked. - - A pointer to the latest version of this and related documentation in - HTML format can be found at the URL - . - -Abstract - - This specification defines a lossless compressed data format that is - compatible with the widely used GZIP utility. The format includes a - cyclic redundancy check value for detecting data corruption. The - format presently uses the DEFLATE method of compression but can be - easily extended to use other compression methods. The format can be - implemented readily in a manner not covered by patents. - - - - - - - - - - -Deutsch Informational [Page 1] - -RFC 1952 GZIP File Format Specification May 1996 - - -Table of Contents - - 1. Introduction ................................................... 2 - 1.1. Purpose ................................................... 2 - 1.2. Intended audience ......................................... 3 - 1.3. Scope ..................................................... 3 - 1.4. Compliance ................................................ 3 - 1.5. Definitions of terms and conventions used ................. 3 - 1.6. Changes from previous versions ............................ 3 - 2. Detailed specification ......................................... 4 - 2.1. Overall conventions ....................................... 4 - 2.2. File format ............................................... 5 - 2.3. Member format ............................................. 5 - 2.3.1. Member header and trailer ........................... 6 - 2.3.1.1. Extra field ................................... 8 - 2.3.1.2. Compliance .................................... 9 - 3. References .................................................. 9 - 4. Security Considerations .................................... 10 - 5. Acknowledgements ........................................... 10 - 6. Author's Address ........................................... 10 - 7. Appendix: Jean-Loup Gailly's gzip utility .................. 11 - 8. Appendix: Sample CRC Code .................................. 11 - -1. Introduction - - 1.1. Purpose - - The purpose of this specification is to define a lossless - compressed data format that: - - * Is independent of CPU type, operating system, file system, - and character set, and hence can be used for interchange; - * Can compress or decompress a data stream (as opposed to a - randomly accessible file) to produce another data stream, - using only an a priori bounded amount of intermediate - storage, and hence can be used in data communications or - similar structures such as Unix filters; - * Compresses data with efficiency comparable to the best - currently available general-purpose compression methods, - and in particular considerably better than the "compress" - program; - * Can be implemented readily in a manner not covered by - patents, and hence can be practiced freely; - * Is compatible with the file format produced by the current - widely used gzip utility, in that conforming decompressors - will be able to read data produced by the existing gzip - compressor. - - - - -Deutsch Informational [Page 2] - -RFC 1952 GZIP File Format Specification May 1996 - - - The data format defined by this specification does not attempt to: - - * Provide random access to compressed data; - * Compress specialized data (e.g., raster graphics) as well as - the best currently available specialized algorithms. - - 1.2. Intended audience - - This specification is intended for use by implementors of software - to compress data into gzip format and/or decompress data from gzip - format. - - The text of the specification assumes a basic background in - programming at the level of bits and other primitive data - representations. - - 1.3. Scope - - The specification specifies a compression method and a file format - (the latter assuming only that a file can store a sequence of - arbitrary bytes). It does not specify any particular interface to - a file system or anything about character sets or encodings - (except for file names and comments, which are optional). - - 1.4. Compliance - - Unless otherwise indicated below, a compliant decompressor must be - able to accept and decompress any file that conforms to all the - specifications presented here; a compliant compressor must produce - files that conform to all the specifications presented here. The - material in the appendices is not part of the specification per se - and is not relevant to compliance. - - 1.5. Definitions of terms and conventions used - - byte: 8 bits stored or transmitted as a unit (same as an octet). - (For this specification, a byte is exactly 8 bits, even on - machines which store a character on a number of bits different - from 8.) See below for the numbering of bits within a byte. - - 1.6. Changes from previous versions - - There have been no technical changes to the gzip format since - version 4.1 of this specification. In version 4.2, some - terminology was changed, and the sample CRC code was rewritten for - clarity and to eliminate the requirement for the caller to do pre- - and post-conditioning. Version 4.3 is a conversion of the - specification to RFC style. - - - -Deutsch Informational [Page 3] - -RFC 1952 GZIP File Format Specification May 1996 - - -2. Detailed specification - - 2.1. Overall conventions - - In the diagrams below, a box like this: - - +---+ - | | <-- the vertical bars might be missing - +---+ - - represents one byte; a box like this: - - +==============+ - | | - +==============+ - - represents a variable number of bytes. - - Bytes stored within a computer do not have a "bit order", since - they are always treated as a unit. However, a byte considered as - an integer between 0 and 255 does have a most- and least- - significant bit, and since we write numbers with the most- - significant digit on the left, we also write bytes with the most- - significant bit on the left. In the diagrams below, we number the - bits of a byte so that bit 0 is the least-significant bit, i.e., - the bits are numbered: - - +--------+ - |76543210| - +--------+ - - This document does not address the issue of the order in which - bits of a byte are transmitted on a bit-sequential medium, since - the data format described here is byte- rather than bit-oriented. - - Within a computer, a number may occupy multiple bytes. All - multi-byte numbers in the format described here are stored with - the least-significant byte first (at the lower memory address). - For example, the decimal number 520 is stored as: - - 0 1 - +--------+--------+ - |00001000|00000010| - +--------+--------+ - ^ ^ - | | - | + more significant byte = 2 x 256 - + less significant byte = 8 - - - -Deutsch Informational [Page 4] - -RFC 1952 GZIP File Format Specification May 1996 - - - 2.2. File format - - A gzip file consists of a series of "members" (compressed data - sets). The format of each member is specified in the following - section. The members simply appear one after another in the file, - with no additional information before, between, or after them. - - 2.3. Member format - - Each member has the following structure: - - +---+---+---+---+---+---+---+---+---+---+ - |ID1|ID2|CM |FLG| MTIME |XFL|OS | (more-->) - +---+---+---+---+---+---+---+---+---+---+ - - (if FLG.FEXTRA set) - - +---+---+=================================+ - | XLEN |...XLEN bytes of "extra field"...| (more-->) - +---+---+=================================+ - - (if FLG.FNAME set) - - +=========================================+ - |...original file name, zero-terminated...| (more-->) - +=========================================+ - - (if FLG.FCOMMENT set) - - +===================================+ - |...file comment, zero-terminated...| (more-->) - +===================================+ - - (if FLG.FHCRC set) - - +---+---+ - | CRC16 | - +---+---+ - - +=======================+ - |...compressed blocks...| (more-->) - +=======================+ - - 0 1 2 3 4 5 6 7 - +---+---+---+---+---+---+---+---+ - | CRC32 | ISIZE | - +---+---+---+---+---+---+---+---+ - - - - -Deutsch Informational [Page 5] - -RFC 1952 GZIP File Format Specification May 1996 - - - 2.3.1. Member header and trailer - - ID1 (IDentification 1) - ID2 (IDentification 2) - These have the fixed values ID1 = 31 (0x1f, \037), ID2 = 139 - (0x8b, \213), to identify the file as being in gzip format. - - CM (Compression Method) - This identifies the compression method used in the file. CM - = 0-7 are reserved. CM = 8 denotes the "deflate" - compression method, which is the one customarily used by - gzip and which is documented elsewhere. - - FLG (FLaGs) - This flag byte is divided into individual bits as follows: - - bit 0 FTEXT - bit 1 FHCRC - bit 2 FEXTRA - bit 3 FNAME - bit 4 FCOMMENT - bit 5 reserved - bit 6 reserved - bit 7 reserved - - If FTEXT is set, the file is probably ASCII text. This is - an optional indication, which the compressor may set by - checking a small amount of the input data to see whether any - non-ASCII characters are present. In case of doubt, FTEXT - is cleared, indicating binary data. For systems which have - different file formats for ascii text and binary data, the - decompressor can use FTEXT to choose the appropriate format. - We deliberately do not specify the algorithm used to set - this bit, since a compressor always has the option of - leaving it cleared and a decompressor always has the option - of ignoring it and letting some other program handle issues - of data conversion. - - If FHCRC is set, a CRC16 for the gzip header is present, - immediately before the compressed data. The CRC16 consists - of the two least significant bytes of the CRC32 for all - bytes of the gzip header up to and not including the CRC16. - [The FHCRC bit was never set by versions of gzip up to - 1.2.4, even though it was documented with a different - meaning in gzip 1.2.4.] - - If FEXTRA is set, optional extra fields are present, as - described in a following section. - - - -Deutsch Informational [Page 6] - -RFC 1952 GZIP File Format Specification May 1996 - - - If FNAME is set, an original file name is present, - terminated by a zero byte. The name must consist of ISO - 8859-1 (LATIN-1) characters; on operating systems using - EBCDIC or any other character set for file names, the name - must be translated to the ISO LATIN-1 character set. This - is the original name of the file being compressed, with any - directory components removed, and, if the file being - compressed is on a file system with case insensitive names, - forced to lower case. There is no original file name if the - data was compressed from a source other than a named file; - for example, if the source was stdin on a Unix system, there - is no file name. - - If FCOMMENT is set, a zero-terminated file comment is - present. This comment is not interpreted; it is only - intended for human consumption. The comment must consist of - ISO 8859-1 (LATIN-1) characters. Line breaks should be - denoted by a single line feed character (10 decimal). - - Reserved FLG bits must be zero. - - MTIME (Modification TIME) - This gives the most recent modification time of the original - file being compressed. The time is in Unix format, i.e., - seconds since 00:00:00 GMT, Jan. 1, 1970. (Note that this - may cause problems for MS-DOS and other systems that use - local rather than Universal time.) If the compressed data - did not come from a file, MTIME is set to the time at which - compression started. MTIME = 0 means no time stamp is - available. - - XFL (eXtra FLags) - These flags are available for use by specific compression - methods. The "deflate" method (CM = 8) sets these flags as - follows: - - XFL = 2 - compressor used maximum compression, - slowest algorithm - XFL = 4 - compressor used fastest algorithm - - OS (Operating System) - This identifies the type of file system on which compression - took place. This may be useful in determining end-of-line - convention for text files. The currently defined values are - as follows: - - - - - - -Deutsch Informational [Page 7] - -RFC 1952 GZIP File Format Specification May 1996 - - - 0 - FAT filesystem (MS-DOS, OS/2, NT/Win32) - 1 - Amiga - 2 - VMS (or OpenVMS) - 3 - Unix - 4 - VM/CMS - 5 - Atari TOS - 6 - HPFS filesystem (OS/2, NT) - 7 - Macintosh - 8 - Z-System - 9 - CP/M - 10 - TOPS-20 - 11 - NTFS filesystem (NT) - 12 - QDOS - 13 - Acorn RISCOS - 255 - unknown - - XLEN (eXtra LENgth) - If FLG.FEXTRA is set, this gives the length of the optional - extra field. See below for details. - - CRC32 (CRC-32) - This contains a Cyclic Redundancy Check value of the - uncompressed data computed according to CRC-32 algorithm - used in the ISO 3309 standard and in section 8.1.1.6.2 of - ITU-T recommendation V.42. (See http://www.iso.ch for - ordering ISO documents. See gopher://info.itu.ch for an - online version of ITU-T V.42.) - - ISIZE (Input SIZE) - This contains the size of the original (uncompressed) input - data modulo 2^32. - - 2.3.1.1. Extra field - - If the FLG.FEXTRA bit is set, an "extra field" is present in - the header, with total length XLEN bytes. It consists of a - series of subfields, each of the form: - - +---+---+---+---+==================================+ - |SI1|SI2| LEN |... LEN bytes of subfield data ...| - +---+---+---+---+==================================+ - - SI1 and SI2 provide a subfield ID, typically two ASCII letters - with some mnemonic value. Jean-Loup Gailly - is maintaining a registry of subfield - IDs; please send him any subfield ID you wish to use. Subfield - IDs with SI2 = 0 are reserved for future use. The following - IDs are currently defined: - - - -Deutsch Informational [Page 8] - -RFC 1952 GZIP File Format Specification May 1996 - - - SI1 SI2 Data - ---------- ---------- ---- - 0x41 ('A') 0x70 ('P') Apollo file type information - - LEN gives the length of the subfield data, excluding the 4 - initial bytes. - - 2.3.1.2. Compliance - - A compliant compressor must produce files with correct ID1, - ID2, CM, CRC32, and ISIZE, but may set all the other fields in - the fixed-length part of the header to default values (255 for - OS, 0 for all others). The compressor must set all reserved - bits to zero. - - A compliant decompressor must check ID1, ID2, and CM, and - provide an error indication if any of these have incorrect - values. It must examine FEXTRA/XLEN, FNAME, FCOMMENT and FHCRC - at least so it can skip over the optional fields if they are - present. It need not examine any other part of the header or - trailer; in particular, a decompressor may ignore FTEXT and OS - and always produce binary output, and still be compliant. A - compliant decompressor must give an error indication if any - reserved bit is non-zero, since such a bit could indicate the - presence of a new field that would cause subsequent data to be - interpreted incorrectly. - -3. References - - [1] "Information Processing - 8-bit single-byte coded graphic - character sets - Part 1: Latin alphabet No.1" (ISO 8859-1:1987). - The ISO 8859-1 (Latin-1) character set is a superset of 7-bit - ASCII. Files defining this character set are available as - iso_8859-1.* in ftp://ftp.uu.net/graphics/png/documents/ - - [2] ISO 3309 - - [3] ITU-T recommendation V.42 - - [4] Deutsch, L.P.,"DEFLATE Compressed Data Format Specification", - available in ftp://ftp.uu.net/pub/archiving/zip/doc/ - - [5] Gailly, J.-L., GZIP documentation, available as gzip-*.tar in - ftp://prep.ai.mit.edu/pub/gnu/ - - [6] Sarwate, D.V., "Computation of Cyclic Redundancy Checks via Table - Look-Up", Communications of the ACM, 31(8), pp.1008-1013. - - - - -Deutsch Informational [Page 9] - -RFC 1952 GZIP File Format Specification May 1996 - - - [7] Schwaderer, W.D., "CRC Calculation", April 85 PC Tech Journal, - pp.118-133. - - [8] ftp://ftp.adelaide.edu.au/pub/rocksoft/papers/crc_v3.txt, - describing the CRC concept. - -4. Security Considerations - - Any data compression method involves the reduction of redundancy in - the data. Consequently, any corruption of the data is likely to have - severe effects and be difficult to correct. Uncompressed text, on - the other hand, will probably still be readable despite the presence - of some corrupted bytes. - - It is recommended that systems using this data format provide some - means of validating the integrity of the compressed data, such as by - setting and checking the CRC-32 check value. - -5. Acknowledgements - - Trademarks cited in this document are the property of their - respective owners. - - Jean-Loup Gailly designed the gzip format and wrote, with Mark Adler, - the related software described in this specification. Glenn - Randers-Pehrson converted this document to RFC and HTML format. - -6. Author's Address - - L. Peter Deutsch - Aladdin Enterprises - 203 Santa Margarita Ave. - Menlo Park, CA 94025 - - Phone: (415) 322-0103 (AM only) - FAX: (415) 322-1734 - EMail: - - Questions about the technical content of this specification can be - sent by email to: - - Jean-Loup Gailly and - Mark Adler - - Editorial comments on this specification can be sent by email to: - - L. Peter Deutsch and - Glenn Randers-Pehrson - - - -Deutsch Informational [Page 10] - -RFC 1952 GZIP File Format Specification May 1996 - - -7. Appendix: Jean-Loup Gailly's gzip utility - - The most widely used implementation of gzip compression, and the - original documentation on which this specification is based, were - created by Jean-Loup Gailly . Since this - implementation is a de facto standard, we mention some more of its - features here. Again, the material in this section is not part of - the specification per se, and implementations need not follow it to - be compliant. - - When compressing or decompressing a file, gzip preserves the - protection, ownership, and modification time attributes on the local - file system, since there is no provision for representing protection - attributes in the gzip file format itself. Since the file format - includes a modification time, the gzip decompressor provides a - command line switch that assigns the modification time from the file, - rather than the local modification time of the compressed input, to - the decompressed output. - -8. Appendix: Sample CRC Code - - The following sample code represents a practical implementation of - the CRC (Cyclic Redundancy Check). (See also ISO 3309 and ITU-T V.42 - for a formal specification.) - - The sample code is in the ANSI C programming language. Non C users - may find it easier to read with these hints: - - & Bitwise AND operator. - ^ Bitwise exclusive-OR operator. - >> Bitwise right shift operator. When applied to an - unsigned quantity, as here, right shift inserts zero - bit(s) at the left. - ! Logical NOT operator. - ++ "n++" increments the variable n. - 0xNNN 0x introduces a hexadecimal (base 16) constant. - Suffix L indicates a long value (at least 32 bits). - - /* Table of CRCs of all 8-bit messages. */ - unsigned long crc_table[256]; - - /* Flag: has the table been computed? Initially false. */ - int crc_table_computed = 0; - - /* Make the table for a fast CRC. */ - void make_crc_table(void) - { - unsigned long c; - - - -Deutsch Informational [Page 11] - -RFC 1952 GZIP File Format Specification May 1996 - - - int n, k; - for (n = 0; n < 256; n++) { - c = (unsigned long) n; - for (k = 0; k < 8; k++) { - if (c & 1) { - c = 0xedb88320L ^ (c >> 1); - } else { - c = c >> 1; - } - } - crc_table[n] = c; - } - crc_table_computed = 1; - } - - /* - Update a running crc with the bytes buf[0..len-1] and return - the updated crc. The crc should be initialized to zero. Pre- and - post-conditioning (one's complement) is performed within this - function so it shouldn't be done by the caller. Usage example: - - unsigned long crc = 0L; - - while (read_buffer(buffer, length) != EOF) { - crc = update_crc(crc, buffer, length); - } - if (crc != original_crc) error(); - */ - unsigned long update_crc(unsigned long crc, - unsigned char *buf, int len) - { - unsigned long c = crc ^ 0xffffffffL; - int n; - - if (!crc_table_computed) - make_crc_table(); - for (n = 0; n < len; n++) { - c = crc_table[(c ^ buf[n]) & 0xff] ^ (c >> 8); - } - return c ^ 0xffffffffL; - } - - /* Return the CRC of the bytes buf[0..len-1]. */ - unsigned long crc(unsigned char *buf, int len) - { - return update_crc(0L, buf, len); - } - - - - -Deutsch Informational [Page 12] - diff --git a/libs/zlibng/doc/txtvsbin.txt b/libs/zlibng/doc/txtvsbin.txt deleted file mode 100644 index 3d0f0634f..000000000 --- a/libs/zlibng/doc/txtvsbin.txt +++ /dev/null @@ -1,107 +0,0 @@ -A Fast Method for Identifying Plain Text Files -============================================== - - -Introduction ------------- - -Given a file coming from an unknown source, it is sometimes desirable -to find out whether the format of that file is plain text. Although -this may appear like a simple task, a fully accurate detection of the -file type requires heavy-duty semantic analysis on the file contents. -It is, however, possible to obtain satisfactory results by employing -various heuristics. - -Previous versions of PKZip and other zip-compatible compression tools -were using a crude detection scheme: if more than 80% (4/5) of the bytes -found in a certain buffer are within the range [7..127], the file is -labeled as plain text, otherwise it is labeled as binary. A prominent -limitation of this scheme is the restriction to Latin-based alphabets. -Other alphabets, like Greek, Cyrillic or Asian, make extensive use of -the bytes within the range [128..255], and texts using these alphabets -are most often misidentified by this scheme; in other words, the rate -of false negatives is sometimes too high, which means that the recall -is low. Another weakness of this scheme is a reduced precision, due to -the false positives that may occur when binary files containing large -amounts of textual characters are misidentified as plain text. - -In this article we propose a new, simple detection scheme that features -a much increased precision and a near-100% recall. This scheme is -designed to work on ASCII, Unicode and other ASCII-derived alphabets, -and it handles single-byte encodings (ISO-8859, MacRoman, KOI8, etc.) -and variable-sized encodings (ISO-2022, UTF-8, etc.). Wider encodings -(UCS-2/UTF-16 and UCS-4/UTF-32) are not handled, however. - - -The Algorithm -------------- - -The algorithm works by dividing the set of bytecodes [0..255] into three -categories: -- The white list of textual bytecodes: - 9 (TAB), 10 (LF), 13 (CR), 32 (SPACE) to 255. -- The gray list of tolerated bytecodes: - 7 (BEL), 8 (BS), 11 (VT), 12 (FF), 26 (SUB), 27 (ESC). -- The black list of undesired, non-textual bytecodes: - 0 (NUL) to 6, 14 to 31. - -If a file contains at least one byte that belongs to the white list and -no byte that belongs to the black list, then the file is categorized as -plain text; otherwise, it is categorized as binary. (The boundary case, -when the file is empty, automatically falls into the latter category.) - - -Rationale ---------- - -The idea behind this algorithm relies on two observations. - -The first observation is that, although the full range of 7-bit codes -[0..127] is properly specified by the ASCII standard, most control -characters in the range [0..31] are not used in practice. The only -widely-used, almost universally-portable control codes are 9 (TAB), -10 (LF) and 13 (CR). There are a few more control codes that are -recognized on a reduced range of platforms and text viewers/editors: -7 (BEL), 8 (BS), 11 (VT), 12 (FF), 26 (SUB) and 27 (ESC); but these -codes are rarely (if ever) used alone, without being accompanied by -some printable text. Even the newer, portable text formats such as -XML avoid using control characters outside the list mentioned here. - -The second observation is that most of the binary files tend to contain -control characters, especially 0 (NUL). Even though the older text -detection schemes observe the presence of non-ASCII codes from the range -[128..255], the precision rarely has to suffer if this upper range is -labeled as textual, because the files that are genuinely binary tend to -contain both control characters and codes from the upper range. On the -other hand, the upper range needs to be labeled as textual, because it -is used by virtually all ASCII extensions. In particular, this range is -used for encoding non-Latin scripts. - -Since there is no counting involved, other than simply observing the -presence or the absence of some byte values, the algorithm produces -consistent results, regardless what alphabet encoding is being used. -(If counting were involved, it could be possible to obtain different -results on a text encoded, say, using ISO-8859-16 versus UTF-8.) - -There is an extra category of plain text files that are "polluted" with -one or more black-listed codes, either by mistake or by peculiar design -considerations. In such cases, a scheme that tolerates a small fraction -of black-listed codes would provide an increased recall (i.e. more true -positives). This, however, incurs a reduced precision overall, since -false positives are more likely to appear in binary files that contain -large chunks of textual data. Furthermore, "polluted" plain text should -be regarded as binary by general-purpose text detection schemes, because -general-purpose text processing algorithms might not be applicable. -Under this premise, it is safe to say that our detection method provides -a near-100% recall. - -Experiments have been run on many files coming from various platforms -and applications. We tried plain text files, system logs, source code, -formatted office documents, compiled object code, etc. The results -confirm the optimistic assumptions about the capabilities of this -algorithm. - - --- -Cosmin Truta -Last updated: 2006-May-28 diff --git a/libs/zlibng/functable.c b/libs/zlibng/functable.c deleted file mode 100644 index 108509798..000000000 --- a/libs/zlibng/functable.c +++ /dev/null @@ -1,133 +0,0 @@ -/* functable.c -- Choose relevant optimized functions at runtime - * Copyright (C) 2017 Hans Kristian Rosbach - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -#include "zbuild.h" -#include "functable.h" -#include "deflate.h" -#include "deflate_p.h" - -#include "gzendian.h" - -/* insert_string */ -#ifdef X86_SSE4_2_CRC_HASH -extern Pos insert_string_sse(deflate_state *const s, const Pos str, unsigned int count); -#elif defined(ARM_ACLE_CRC_HASH) -extern Pos insert_string_acle(deflate_state *const s, const Pos str, unsigned int count); -#endif - -/* fill_window */ -#ifdef X86_SSE2 -extern void fill_window_sse(deflate_state *s); -#elif defined(__arm__) || defined(__aarch64__) || defined(_M_ARM) -extern void fill_window_arm(deflate_state *s); -#endif - -/* adler32 */ -extern uint32_t adler32_c(uint32_t adler, const unsigned char *buf, size_t len); -#if (defined(__ARM_NEON__) || defined(__ARM_NEON)) && defined(ARM_NEON_ADLER32) -extern uint32_t adler32_neon(uint32_t adler, const unsigned char *buf, size_t len); -#endif - -ZLIB_INTERNAL uint32_t crc32_generic(uint32_t, const unsigned char *, uint64_t); - -#ifdef DYNAMIC_CRC_TABLE -extern volatile int crc_table_empty; -extern void make_crc_table(void); -#endif - -#ifdef __ARM_FEATURE_CRC32 -extern uint32_t crc32_acle(uint32_t, const unsigned char *, uint64_t); -#endif - -#if BYTE_ORDER == LITTLE_ENDIAN -extern uint32_t crc32_little(uint32_t, const unsigned char *, uint64_t); -#elif BYTE_ORDER == BIG_ENDIAN -extern uint32_t crc32_big(uint32_t, const unsigned char *, uint64_t); -#endif - -/* stub definitions */ -ZLIB_INTERNAL Pos insert_string_stub(deflate_state *const s, const Pos str, unsigned int count); -ZLIB_INTERNAL void fill_window_stub(deflate_state *s); -ZLIB_INTERNAL uint32_t adler32_stub(uint32_t adler, const unsigned char *buf, size_t len); -ZLIB_INTERNAL uint32_t crc32_stub(uint32_t crc, const unsigned char *buf, uint64_t len); - -/* functable init */ -ZLIB_INTERNAL __thread struct functable_s functable = {fill_window_stub,insert_string_stub,adler32_stub,crc32_stub}; - - -/* stub functions */ -ZLIB_INTERNAL Pos insert_string_stub(deflate_state *const s, const Pos str, unsigned int count) { - // Initialize default - functable.insert_string=&insert_string_c; - - #ifdef X86_SSE4_2_CRC_HASH - if (x86_cpu_has_sse42) - functable.insert_string=&insert_string_sse; - #elif defined(__ARM_FEATURE_CRC32) && defined(ARM_ACLE_CRC_HASH) - if (arm_cpu_has_crc32) - functable.insert_string=&insert_string_acle; - #endif - - return functable.insert_string(s, str, count); -} - -ZLIB_INTERNAL void fill_window_stub(deflate_state *s) { - // Initialize default - functable.fill_window=&fill_window_c; - - #ifdef X86_SSE2 - # if !defined(__x86_64__) && !defined(_M_X64) && !defined(X86_NOCHECK_SSE2) - if (x86_cpu_has_sse2) - # endif - functable.fill_window=&fill_window_sse; - #elif defined(__arm__) || defined(__aarch64__) || defined(_M_ARM) - functable.fill_window=&fill_window_arm; - #endif - - functable.fill_window(s); -} - -ZLIB_INTERNAL uint32_t adler32_stub(uint32_t adler, const unsigned char *buf, size_t len) { - // Initialize default - functable.adler32=&adler32_c; - - #if (defined(__ARM_NEON__) || defined(__ARM_NEON)) && defined(ARM_NEON_ADLER32) - if (arm_cpu_has_neon) - functable.adler32=&adler32_neon; - #endif - - return functable.adler32(adler, buf, len); -} - -ZLIB_INTERNAL uint32_t crc32_stub(uint32_t crc, const unsigned char *buf, uint64_t len) { - - - Assert(sizeof(uint64_t) >= sizeof(size_t), - "crc32_z takes size_t but internally we have a uint64_t len"); -/* return a function pointer for optimized arches here after a capability test */ - -#ifdef DYNAMIC_CRC_TABLE - if (crc_table_empty) - make_crc_table(); -#endif /* DYNAMIC_CRC_TABLE */ - - if (sizeof(void *) == sizeof(ptrdiff_t)) { -#if BYTE_ORDER == LITTLE_ENDIAN - functable.crc32=crc32_little; -# if defined(__ARM_FEATURE_CRC32) && defined(ARM_ACLE_CRC_HASH) - if (arm_cpu_has_crc32) - functable.crc32=crc32_acle; -# endif -#elif BYTE_ORDER == BIG_ENDIAN - functable.crc32=crc32_big; -#else -# error No endian defined -#endif - } else { - functable.crc32=crc32_generic; - } - - return functable.crc32(crc, buf, len); -} diff --git a/libs/zlibng/functable.h b/libs/zlibng/functable.h deleted file mode 100644 index 280651c32..000000000 --- a/libs/zlibng/functable.h +++ /dev/null @@ -1,21 +0,0 @@ -/* functable.h -- Struct containing function pointers to optimized functions - * Copyright (C) 2017 Hans Kristian Rosbach - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -#ifndef FUNCTABLE_H_ -#define FUNCTABLE_H_ - -#include "deflate.h" - -struct functable_s { - void (* fill_window) (deflate_state *s); - Pos (* insert_string) (deflate_state *const s, const Pos str, unsigned int count); - uint32_t (* adler32) (uint32_t adler, const unsigned char *buf, size_t len); - uint32_t (* crc32) (uint32_t crc, const unsigned char *buf, uint64_t len); -}; - -ZLIB_INTERNAL extern __thread struct functable_s functable; - - -#endif diff --git a/libs/zlibng/gzclose.c b/libs/zlibng/gzclose.c deleted file mode 100644 index bafb774c8..000000000 --- a/libs/zlibng/gzclose.c +++ /dev/null @@ -1,24 +0,0 @@ -/* gzclose.c -- zlib gzclose() function - * Copyright (C) 2004, 2010 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -#include "zbuild.h" -#include "gzguts.h" - -/* gzclose() is in a separate file so that it is linked in only if it is used. - That way the other gzclose functions can be used instead to avoid linking in - unneeded compression or decompression routines. */ -int ZEXPORT PREFIX(gzclose)(gzFile file) { -#ifndef NO_GZCOMPRESS - gz_state *state; - - if (file == NULL) - return Z_STREAM_ERROR; - state = (gz_state *)file; - - return state->mode == GZ_READ ? PREFIX(gzclose_r)(file) : PREFIX(gzclose_w)(file); -#else - return PREFIX(gzclose_r)(file); -#endif -} diff --git a/libs/zlibng/gzendian.h b/libs/zlibng/gzendian.h deleted file mode 100644 index 5ee4cd387..000000000 --- a/libs/zlibng/gzendian.h +++ /dev/null @@ -1,60 +0,0 @@ -/* gzendian.h -- define BYTE_ORDER for endian tests - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -#ifndef ENDIAN_H_ -#define ENDIAN_H_ - -/* First check whether the compiler knows the target __BYTE_ORDER__. */ -#if defined(__BYTE_ORDER__) -# if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ -# if !defined(LITTLE_ENDIAN) -# define LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__ -# endif -# if !defined(BYTE_ORDER) -# define BYTE_ORDER LITTLE_ENDIAN -# endif -# elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ -# if !defined(BIG_ENDIAN) -# define BIG_ENDIAN __ORDER_BIG_ENDIAN__ -# endif -# if !defined(BYTE_ORDER) -# define BYTE_ORDER BIG_ENDIAN -# endif -# endif -#elif defined(__MINGW32__) -# include -#elif defined(WIN32) || defined(_WIN32) -# define LITTLE_ENDIAN 1234 -# define BIG_ENDIAN 4321 -# if defined(_M_IX86) || defined(_M_AMD64) || defined(_M_IA64) || defined (_M_ARM) -# define BYTE_ORDER LITTLE_ENDIAN -# else -# error Unknown endianness! -# endif -#elif defined(__linux__) -# include -#elif defined(__APPLE__) || defined(__arm__) || defined(__aarch64__) -# include -#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__) || defined(__DragonFly__) -# include -#elif defined(__sun) || defined(sun) -# include -# if !defined(LITTLE_ENDIAN) -# define LITTLE_ENDIAN 4321 -# endif -# if !defined(BIG_ENDIAN) -# define BIG_ENDIAN 1234 -# endif -# if !defined(BYTE_ORDER) -# if defined(_BIG_ENDIAN) -# define BYTE_ORDER BIG_ENDIAN -# else -# define BYTE_ORDER LITTLE_ENDIAN -# endif -# endif -#else -# include -#endif - -#endif diff --git a/libs/zlibng/gzguts.h b/libs/zlibng/gzguts.h deleted file mode 100644 index c2ff7bb96..000000000 --- a/libs/zlibng/gzguts.h +++ /dev/null @@ -1,166 +0,0 @@ -#ifndef GZGUTS_H_ -#define GZGUTS_H_ -/* gzguts.h -- zlib internal header definitions for gz* operations - * Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013, 2016 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -#ifdef _LARGEFILE64_SOURCE -# ifndef _LARGEFILE_SOURCE -# define _LARGEFILE_SOURCE 1 -# endif -# ifdef _FILE_OFFSET_BITS -# undef _FILE_OFFSET_BITS -# endif -#endif - -#if defined(HAVE_INTERNAL) -# define ZLIB_INTERNAL __attribute__((visibility ("internal"))) -#elif defined(HAVE_HIDDEN) -# define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) -#else -# define ZLIB_INTERNAL -#endif - -#include -#include -#include -#include -#include - -#if defined(ZLIB_COMPAT) -# include "zlib.h" -#else -# include "zlib-ng.h" -#endif - -#ifdef WIN32 -# include -#endif - -#if !defined(_MSC_VER) || defined(__MINGW__) -# include /* for lseek(), read(), close(), write(), unlink() */ -#endif - -#if defined(_MSC_VER) || defined(WIN32) -# include -#endif - -#if defined(_WIN32) || defined(__MINGW__) -# define WIDECHAR -#endif - -#ifdef WINAPI_FAMILY -# define open _open -# define read _read -# define write _write -# define close _close -#endif - -/* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */ -#if !defined(STDC99) && !defined(__CYGWIN__) && !defined(__MINGW__) && defined(WIN32) -# if !defined(vsnprintf) -# if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 ) -# define vsnprintf _vsnprintf -# endif -# endif -#endif - -/* unlike snprintf (which is required in C99), _snprintf does not guarantee - null termination of the result -- however this is only used in gzlib.c - where the result is assured to fit in the space provided */ -#if defined(_MSC_VER) && _MSC_VER < 1900 -# define snprintf _snprintf -#endif - -/* get errno and strerror definition */ -#ifndef NO_STRERROR -# include -# define zstrerror() strerror(errno) -#else -# define zstrerror() "stdio error (consult errno)" -#endif - -/* provide prototypes for these when building zlib without LFS */ -#if (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) && defined(WITH_GZFILEOP) - ZEXTERN gzFile ZEXPORT PREFIX(gzopen64)(const char *, const char *); - ZEXTERN z_off64_t ZEXPORT PREFIX(gzseek64)(gzFile, z_off64_t, int); - ZEXTERN z_off64_t ZEXPORT PREFIX(gztell64)(gzFile); - ZEXTERN z_off64_t ZEXPORT PREFIX(gzoffset64)(gzFile); -#endif - -/* default memLevel */ -#if MAX_MEM_LEVEL >= 8 -# define DEF_MEM_LEVEL 8 -#else -# define DEF_MEM_LEVEL MAX_MEM_LEVEL -#endif - -/* default i/o buffer size -- double this for output when reading (this and - twice this must be able to fit in an unsigned type) */ -#if defined(S390_DFLTCC_DEFLATE) || defined(S390_DFLTCC_INFLATE) -#define GZBUFSIZE 262144 /* DFLTCC works faster with larger buffers */ -#else -#define GZBUFSIZE 8192 -#endif - -/* gzip modes, also provide a little integrity check on the passed structure */ -#define GZ_NONE 0 -#define GZ_READ 7247 -#define GZ_WRITE 31153 -#define GZ_APPEND 1 /* mode set to GZ_WRITE after the file is opened */ - -/* values for gz_state how */ -#define LOOK 0 /* look for a gzip header */ -#define COPY 1 /* copy input directly */ -#define GZIP 2 /* decompress a gzip stream */ - -/* internal gzip file state data structure */ -typedef struct { - /* exposed contents for gzgetc() macro */ - struct gzFile_s x; /* "x" for exposed */ - /* x.have: number of bytes available at x.next */ - /* x.next: next output data to deliver or write */ - /* x.pos: current position in uncompressed data */ - /* used for both reading and writing */ - int mode; /* see gzip modes above */ - int fd; /* file descriptor */ - char *path; /* path or fd for error messages */ - unsigned size; /* buffer size, zero if not allocated yet */ - unsigned want; /* requested buffer size, default is GZBUFSIZE */ - unsigned char *in; /* input buffer (double-sized when writing) */ - unsigned char *out; /* output buffer (double-sized when reading) */ - int direct; /* 0 if processing gzip, 1 if transparent */ - /* just for reading */ - int how; /* 0: get header, 1: copy, 2: decompress */ - z_off64_t start; /* where the gzip data started, for rewinding */ - int eof; /* true if end of input file reached */ - int past; /* true if read requested past end */ - /* just for writing */ - int level; /* compression level */ - int strategy; /* compression strategy */ - /* seek request */ - z_off64_t skip; /* amount to skip (already rewound if backwards) */ - int seek; /* true if seek request pending */ - /* error information */ - int err; /* error code */ - char *msg; /* error message */ - /* zlib inflate or deflate stream */ - PREFIX3(stream) strm; /* stream structure in-place (not a pointer) */ -} gz_state; -typedef gz_state *gz_statep; - -/* shared functions */ -void ZLIB_INTERNAL gz_error(gz_state *, int, const char *); - -/* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t - value -- needed when comparing unsigned to z_off64_t, which is signed - (possible z_off64_t types off_t, off64_t, and long are all signed) */ -#ifdef INT_MAX -# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX) -#else -unsigned ZLIB_INTERNAL gz_intmax(void); -# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax()) -#endif - -#endif /* GZGUTS_H_ */ diff --git a/libs/zlibng/gzlib.c b/libs/zlibng/gzlib.c deleted file mode 100644 index dbf27aa43..000000000 --- a/libs/zlibng/gzlib.c +++ /dev/null @@ -1,518 +0,0 @@ -/* gzlib.c -- zlib functions common to reading and writing gzip files - * Copyright (C) 2004-2017 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -#include "zbuild.h" -#include "gzguts.h" - -#if defined(WIN32) && !defined(__BORLANDC__) -# define LSEEK _lseeki64 -#else -#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0 -# define LSEEK lseek64 -#else -# define LSEEK lseek -#endif -#endif - -/* Local functions */ -static void gz_reset(gz_state *); -static gzFile gz_open(const void *, int, const char *); - -/* Reset gzip file state */ -static void gz_reset(gz_state *state) { - state->x.have = 0; /* no output data available */ - if (state->mode == GZ_READ) { /* for reading ... */ - state->eof = 0; /* not at end of file */ - state->past = 0; /* have not read past end yet */ - state->how = LOOK; /* look for gzip header */ - } - state->seek = 0; /* no seek request pending */ - gz_error(state, Z_OK, NULL); /* clear error */ - state->x.pos = 0; /* no uncompressed data yet */ - state->strm.avail_in = 0; /* no input data yet */ -} - -/* Open a gzip file either by name or file descriptor. */ -static gzFile gz_open(const void *path, int fd, const char *mode) { - gz_state *state; - size_t len; - int oflag; -#ifdef O_CLOEXEC - int cloexec = 0; -#endif -#ifdef O_EXCL - int exclusive = 0; -#endif - - /* check input */ - if (path == NULL) - return NULL; - - /* allocate gzFile structure to return */ - state = (gz_state *)malloc(sizeof(gz_state)); - if (state == NULL) - return NULL; - state->size = 0; /* no buffers allocated yet */ - state->want = GZBUFSIZE; /* requested buffer size */ - state->msg = NULL; /* no error message yet */ - - /* interpret mode */ - state->mode = GZ_NONE; - state->level = Z_DEFAULT_COMPRESSION; - state->strategy = Z_DEFAULT_STRATEGY; - state->direct = 0; - while (*mode) { - if (*mode >= '0' && *mode <= '9') { - state->level = *mode - '0'; - } else { - switch (*mode) { - case 'r': - state->mode = GZ_READ; - break; -#ifndef NO_GZCOMPRESS - case 'w': - state->mode = GZ_WRITE; - break; - case 'a': - state->mode = GZ_APPEND; - break; -#endif - case '+': /* can't read and write at the same time */ - free(state); - return NULL; - case 'b': /* ignore -- will request binary anyway */ - break; -#ifdef O_CLOEXEC - case 'e': - cloexec = 1; - break; -#endif -#ifdef O_EXCL - case 'x': - exclusive = 1; - break; -#endif - case 'f': - state->strategy = Z_FILTERED; - break; - case 'h': - state->strategy = Z_HUFFMAN_ONLY; - break; - case 'R': - state->strategy = Z_RLE; - break; - case 'F': - state->strategy = Z_FIXED; - break; - case 'T': - state->direct = 1; - break; - default: /* could consider as an error, but just ignore */ - {} - } - } - mode++; - } - - /* must provide an "r", "w", or "a" */ - if (state->mode == GZ_NONE) { - free(state); - return NULL; - } - - /* can't force transparent read */ - if (state->mode == GZ_READ) { - if (state->direct) { - free(state); - return NULL; - } - state->direct = 1; /* for empty file */ - } - - /* save the path name for error messages */ -#ifdef WIDECHAR - if (fd == -2) { - len = wcstombs(NULL, path, 0); - if (len == (size_t)-1) - len = 0; - } else -#endif - len = strlen((const char *)path); - state->path = (char *)malloc(len + 1); - if (state->path == NULL) { - free(state); - return NULL; - } -#ifdef WIDECHAR - if (fd == -2) - if (len) { - wcstombs(state->path, path, len + 1); - } else { - *(state->path) = 0; - } - else -#endif - (void)snprintf(state->path, len + 1, "%s", (const char *)path); - - /* compute the flags for open() */ - oflag = -#ifdef O_LARGEFILE - O_LARGEFILE | -#endif -#ifdef O_BINARY - O_BINARY | -#endif -#ifdef O_CLOEXEC - (cloexec ? O_CLOEXEC : 0) | -#endif - (state->mode == GZ_READ ? - O_RDONLY : - (O_WRONLY | O_CREAT | -#ifdef O_EXCL - (exclusive ? O_EXCL : 0) | -#endif - (state->mode == GZ_WRITE ? - O_TRUNC : - O_APPEND))); - - /* open the file with the appropriate flags (or just use fd) */ - state->fd = fd > -1 ? fd : ( -#if defined(WIN32) || defined(__MINGW__) - fd == -2 ? _wopen(path, oflag, 0666) : -#elif __CYGWIN__ - fd == -2 ? open(state->path, oflag, 0666) : -#endif - open((const char *)path, oflag, 0666)); - if (state->fd == -1) { - free(state->path); - free(state); - return NULL; - } - if (state->mode == GZ_APPEND) { - LSEEK(state->fd, 0, SEEK_END); /* so gzoffset() is correct */ - state->mode = GZ_WRITE; /* simplify later checks */ - } - - /* save the current position for rewinding (only if reading) */ - if (state->mode == GZ_READ) { - state->start = LSEEK(state->fd, 0, SEEK_CUR); - if (state->start == -1) state->start = 0; - } - - /* initialize stream */ - gz_reset(state); - - /* return stream */ - return (gzFile)state; -} - -/* -- see zlib.h -- */ -gzFile ZEXPORT PREFIX(gzopen)(const char *path, const char *mode) { - return gz_open(path, -1, mode); -} - -/* -- see zlib.h -- */ -gzFile ZEXPORT PREFIX(gzopen64)(const char *path, const char *mode) { - return gz_open(path, -1, mode); -} - -/* -- see zlib.h -- */ -gzFile ZEXPORT PREFIX(gzdopen)(int fd, const char *mode) { - char *path; /* identifier for error messages */ - gzFile gz; - - if (fd == -1 || (path = (char *)malloc(7 + 3 * sizeof(int))) == NULL) - return NULL; - (void)snprintf(path, 7 + 3 * sizeof(int), "", fd); /* for debugging */ - gz = gz_open(path, fd, mode); - free(path); - return gz; -} - -/* -- see zlib.h -- */ -#ifdef WIDECHAR -gzFile ZEXPORT PREFIX(gzopen_w)(const wchar_t *path, const char *mode) { - return gz_open(path, -2, mode); -} -#endif - -/* -- see zlib.h -- */ -int ZEXPORT PREFIX(gzbuffer)(gzFile file, unsigned size) { - gz_state *state; - - /* get internal structure and check integrity */ - if (file == NULL) - return -1; - state = (gz_state *)file; - if (state->mode != GZ_READ && state->mode != GZ_WRITE) - return -1; - - /* make sure we haven't already allocated memory */ - if (state->size != 0) - return -1; - - /* check and set requested size */ - if ((size << 1) < size) - return -1; /* need to be able to double it */ - if (size < 2) - size = 2; /* need two bytes to check magic header */ - state->want = size; - return 0; -} - -/* -- see zlib.h -- */ -int ZEXPORT PREFIX(gzrewind)(gzFile file) { - gz_state *state; - - /* get internal structure */ - if (file == NULL) - return -1; - state = (gz_state *)file; - - /* check that we're reading and that there's no error */ - if (state->mode != GZ_READ || (state->err != Z_OK && state->err != Z_BUF_ERROR)) - return -1; - - /* back up and start over */ - if (LSEEK(state->fd, state->start, SEEK_SET) == -1) - return -1; - gz_reset(state); - return 0; -} - -/* -- see zlib.h -- */ -z_off64_t ZEXPORT PREFIX(gzseek64)(gzFile file, z_off64_t offset, int whence) { - unsigned n; - z_off64_t ret; - gz_state *state; - - /* get internal structure and check integrity */ - if (file == NULL) - return -1; - state = (gz_state *)file; - if (state->mode != GZ_READ && state->mode != GZ_WRITE) - return -1; - - /* check that there's no error */ - if (state->err != Z_OK && state->err != Z_BUF_ERROR) - return -1; - - /* can only seek from start or relative to current position */ - if (whence != SEEK_SET && whence != SEEK_CUR) - return -1; - - /* normalize offset to a SEEK_CUR specification */ - if (whence == SEEK_SET) - offset -= state->x.pos; - else if (state->seek) - offset += state->skip; - state->seek = 0; - - /* if within raw area while reading, just go there */ - if (state->mode == GZ_READ && state->how == COPY && state->x.pos + offset >= 0) { - ret = LSEEK(state->fd, offset - (z_off64_t)state->x.have, SEEK_CUR); - if (ret == -1) - return -1; - state->x.have = 0; - state->eof = 0; - state->past = 0; - state->seek = 0; - gz_error(state, Z_OK, NULL); - state->strm.avail_in = 0; - state->x.pos += offset; - return state->x.pos; - } - - /* calculate skip amount, rewinding if needed for back seek when reading */ - if (offset < 0) { - if (state->mode != GZ_READ) /* writing -- can't go backwards */ - return -1; - offset += state->x.pos; - if (offset < 0) /* before start of file! */ - return -1; - if (PREFIX(gzrewind)(file) == -1) /* rewind, then skip to offset */ - return -1; - } - - /* if reading, skip what's in output buffer (one less gzgetc() check) */ - if (state->mode == GZ_READ) { - n = GT_OFF(state->x.have) || (z_off64_t)state->x.have > offset ? (unsigned)offset : state->x.have; - state->x.have -= n; - state->x.next += n; - state->x.pos += n; - offset -= n; - } - - /* request skip (if not zero) */ - if (offset) { - state->seek = 1; - state->skip = offset; - } - return state->x.pos + offset; -} - -/* -- see zlib.h -- */ -z_off_t ZEXPORT PREFIX(gzseek)(gzFile file, z_off_t offset, int whence) { - z_off64_t ret; - - ret = PREFIX(gzseek64)(file, (z_off64_t)offset, whence); - return ret == (z_off_t)ret ? (z_off_t)ret : -1; -} - -/* -- see zlib.h -- */ -z_off64_t ZEXPORT PREFIX(gztell64)(gzFile file) { - gz_state *state; - - /* get internal structure and check integrity */ - if (file == NULL) - return -1; - state = (gz_state *)file; - if (state->mode != GZ_READ && state->mode != GZ_WRITE) - return -1; - - /* return position */ - return state->x.pos + (state->seek ? state->skip : 0); -} - -/* -- see zlib.h -- */ -z_off_t ZEXPORT PREFIX(gztell)(gzFile file) { - z_off64_t ret; - - ret = PREFIX(gztell64)(file); - return ret == (z_off_t)ret ? (z_off_t)ret : -1; -} - -/* -- see zlib.h -- */ -z_off64_t ZEXPORT PREFIX(gzoffset64)(gzFile file) { - z_off64_t offset; - gz_state *state; - - /* get internal structure and check integrity */ - if (file == NULL) - return -1; - state = (gz_state *)file; - if (state->mode != GZ_READ && state->mode != GZ_WRITE) - return -1; - - /* compute and return effective offset in file */ - offset = LSEEK(state->fd, 0, SEEK_CUR); - if (offset == -1) - return -1; - if (state->mode == GZ_READ) /* reading */ - offset -= state->strm.avail_in; /* don't count buffered input */ - return offset; -} - -/* -- see zlib.h -- */ -z_off_t ZEXPORT PREFIX(gzoffset)(gzFile file) { - z_off64_t ret; - - ret = PREFIX(gzoffset64)(file); - return ret == (z_off_t)ret ? (z_off_t)ret : -1; -} - -/* -- see zlib.h -- */ -int ZEXPORT PREFIX(gzeof)(gzFile file) { - gz_state *state; - - /* get internal structure and check integrity */ - if (file == NULL) - return 0; - state = (gz_state *)file; - if (state->mode != GZ_READ && state->mode != GZ_WRITE) - return 0; - - /* return end-of-file state */ - return state->mode == GZ_READ ? state->past : 0; -} - -/* -- see zlib.h -- */ -const char * ZEXPORT PREFIX(gzerror)(gzFile file, int *errnum) { - gz_state *state; - - /* get internal structure and check integrity */ - if (file == NULL) - return NULL; - state = (gz_state *)file; - if (state->mode != GZ_READ && state->mode != GZ_WRITE) - return NULL; - - /* return error information */ - if (errnum != NULL) - *errnum = state->err; - return state->err == Z_MEM_ERROR ? "out of memory" : (state->msg == NULL ? "" : state->msg); -} - -/* -- see zlib.h -- */ -void ZEXPORT PREFIX(gzclearerr)(gzFile file) { - gz_state *state; - - /* get internal structure and check integrity */ - if (file == NULL) - return; - state = (gz_state *)file; - if (state->mode != GZ_READ && state->mode != GZ_WRITE) - return; - - /* clear error and end-of-file */ - if (state->mode == GZ_READ) { - state->eof = 0; - state->past = 0; - } - gz_error(state, Z_OK, NULL); -} - -/* Create an error message in allocated memory and set state->err and - state->msg accordingly. Free any previous error message already there. Do - not try to free or allocate space if the error is Z_MEM_ERROR (out of - memory). Simply save the error message as a static string. If there is an - allocation failure constructing the error message, then convert the error to - out of memory. */ -void ZLIB_INTERNAL gz_error(gz_state *state, int err, const char *msg) { - /* free previously allocated message and clear */ - if (state->msg != NULL) { - if (state->err != Z_MEM_ERROR) - free(state->msg); - state->msg = NULL; - } - - /* if fatal, set state->x.have to 0 so that the gzgetc() macro fails */ - if (err != Z_OK && err != Z_BUF_ERROR) - state->x.have = 0; - - /* set error code, and if no message, then done */ - state->err = err; - if (msg == NULL) - return; - - /* for an out of memory error, return literal string when requested */ - if (err == Z_MEM_ERROR) - return; - - /* construct error message with path */ - if ((state->msg = (char *)malloc(strlen(state->path) + strlen(msg) + 3)) == NULL) { - state->err = Z_MEM_ERROR; - return; - } - (void)snprintf(state->msg, strlen(state->path) + strlen(msg) + 3, "%s%s%s", state->path, ": ", msg); -} - -#ifndef INT_MAX -/* portably return maximum value for an int (when limits.h presumed not - available) -- we need to do this to cover cases where 2's complement not - used, since C standard permits 1's complement and sign-bit representations, - otherwise we could just use ((unsigned)-1) >> 1 */ -unsigned ZLIB_INTERNAL gz_intmax() { - unsigned p, q; - - p = 1; - do { - q = p; - p <<= 1; - p++; - } while (p > q); - return q >> 1; -} -#endif diff --git a/libs/zlibng/gzread.c b/libs/zlibng/gzread.c deleted file mode 100644 index e041a3817..000000000 --- a/libs/zlibng/gzread.c +++ /dev/null @@ -1,599 +0,0 @@ -/* gzread.c -- zlib functions for reading gzip files - * Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013, 2016 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -#include "zbuild.h" -#include "gzguts.h" - -/* Local functions */ -static int gz_load(gz_state *, unsigned char *, unsigned, unsigned *); -static int gz_avail(gz_state *); -static int gz_look(gz_state *); -static int gz_decomp(gz_state *); -static int gz_fetch(gz_state *); -static int gz_skip(gz_state *, z_off64_t); -static size_t gz_read(gz_state *, void *, size_t); - -/* Use read() to load a buffer -- return -1 on error, otherwise 0. Read from - state->fd, and update state->eof, state->err, and state->msg as appropriate. - This function needs to loop on read(), since read() is not guaranteed to - read the number of bytes requested, depending on the type of descriptor. */ -static int gz_load(gz_state *state, unsigned char *buf, unsigned len, unsigned *have) { - ssize_t ret; - - *have = 0; - do { - ret = read(state->fd, buf + *have, len - *have); - if (ret <= 0) - break; - *have += (unsigned)ret; - } while (*have < len); - if (ret < 0) { - gz_error(state, Z_ERRNO, zstrerror()); - return -1; - } - if (ret == 0) - state->eof = 1; - return 0; -} - -/* Load up input buffer and set eof flag if last data loaded -- return -1 on - error, 0 otherwise. Note that the eof flag is set when the end of the input - file is reached, even though there may be unused data in the buffer. Once - that data has been used, no more attempts will be made to read the file. - If strm->avail_in != 0, then the current data is moved to the beginning of - the input buffer, and then the remainder of the buffer is loaded with the - available data from the input file. */ -static int gz_avail(gz_state *state) { - unsigned got; - PREFIX3(stream) *strm = &(state->strm); - - if (state->err != Z_OK && state->err != Z_BUF_ERROR) - return -1; - if (state->eof == 0) { - if (strm->avail_in) { /* copy what's there to the start */ - unsigned char *p = state->in; - unsigned const char *q = strm->next_in; - unsigned n = strm->avail_in; - do { - *p++ = *q++; - } while (--n); - } - if (gz_load(state, state->in + strm->avail_in, state->size - strm->avail_in, &got) == -1) - return -1; - strm->avail_in += got; - strm->next_in = state->in; - } - return 0; -} - -/* Look for gzip header, set up for inflate or copy. state->x.have must be 0. - If this is the first time in, allocate required memory. state->how will be - left unchanged if there is no more input data available, will be set to COPY - if there is no gzip header and direct copying will be performed, or it will - be set to GZIP for decompression. If direct copying, then leftover input - data from the input buffer will be copied to the output buffer. In that - case, all further file reads will be directly to either the output buffer or - a user buffer. If decompressing, the inflate state will be initialized. - gz_look() will return 0 on success or -1 on failure. */ -static int gz_look(gz_state *state) { - PREFIX3(stream) *strm = &(state->strm); - - /* allocate read buffers and inflate memory */ - if (state->size == 0) { - /* allocate buffers */ - state->in = (unsigned char *)malloc(state->want); - state->out = (unsigned char *)malloc(state->want << 1); - if (state->in == NULL || state->out == NULL) { - free(state->out); - free(state->in); - gz_error(state, Z_MEM_ERROR, "out of memory"); - return -1; - } - state->size = state->want; - - /* allocate inflate memory */ - state->strm.zalloc = NULL; - state->strm.zfree = NULL; - state->strm.opaque = NULL; - state->strm.avail_in = 0; - state->strm.next_in = NULL; - if (PREFIX(inflateInit2)(&(state->strm), 15 + 16) != Z_OK) { /* gunzip */ - free(state->out); - free(state->in); - state->size = 0; - gz_error(state, Z_MEM_ERROR, "out of memory"); - return -1; - } - } - - /* get at least the magic bytes in the input buffer */ - if (strm->avail_in < 2) { - if (gz_avail(state) == -1) - return -1; - if (strm->avail_in == 0) - return 0; - } - - /* look for gzip magic bytes -- if there, do gzip decoding (note: there is - a logical dilemma here when considering the case of a partially written - gzip file, to wit, if a single 31 byte is written, then we cannot tell - whether this is a single-byte file, or just a partially written gzip - file -- for here we assume that if a gzip file is being written, then - the header will be written in a single operation, so that reading a - single byte is sufficient indication that it is not a gzip file) */ - if (strm->avail_in > 1 && - strm->next_in[0] == 31 && strm->next_in[1] == 139) { - PREFIX(inflateReset)(strm); - state->how = GZIP; - state->direct = 0; - return 0; - } - - /* no gzip header -- if we were decoding gzip before, then this is trailing - garbage. Ignore the trailing garbage and finish. */ - if (state->direct == 0) { - strm->avail_in = 0; - state->eof = 1; - state->x.have = 0; - return 0; - } - - /* doing raw i/o, copy any leftover input to output -- this assumes that - the output buffer is larger than the input buffer, which also assures - space for gzungetc() */ - state->x.next = state->out; - if (strm->avail_in) { - memcpy(state->x.next, strm->next_in, strm->avail_in); - state->x.have = strm->avail_in; - strm->avail_in = 0; - } - state->how = COPY; - state->direct = 1; - return 0; -} - -/* Decompress from input to the provided next_out and avail_out in the state. - On return, state->x.have and state->x.next point to the just decompressed - data. If the gzip stream completes, state->how is reset to LOOK to look for - the next gzip stream or raw data, once state->x.have is depleted. Returns 0 - on success, -1 on failure. */ -static int gz_decomp(gz_state *state) { - int ret = Z_OK; - unsigned had; - PREFIX3(stream) *strm = &(state->strm); - - /* fill output buffer up to end of deflate stream */ - had = strm->avail_out; - do { - /* get more input for inflate() */ - if (strm->avail_in == 0 && gz_avail(state) == -1) - return -1; - if (strm->avail_in == 0) { - gz_error(state, Z_BUF_ERROR, "unexpected end of file"); - break; - } - - /* decompress and handle errors */ - ret = PREFIX(inflate)(strm, Z_NO_FLUSH); - if (ret == Z_STREAM_ERROR || ret == Z_NEED_DICT) { - gz_error(state, Z_STREAM_ERROR, "internal error: inflate stream corrupt"); - return -1; - } - if (ret == Z_MEM_ERROR) { - gz_error(state, Z_MEM_ERROR, "out of memory"); - return -1; - } - if (ret == Z_DATA_ERROR) { /* deflate stream invalid */ - gz_error(state, Z_DATA_ERROR, strm->msg == NULL ? "compressed data error" : strm->msg); - return -1; - } - } while (strm->avail_out && ret != Z_STREAM_END); - - /* update available output */ - state->x.have = had - strm->avail_out; - state->x.next = strm->next_out - state->x.have; - - /* if the gzip stream completed successfully, look for another */ - if (ret == Z_STREAM_END) - state->how = LOOK; - - /* good decompression */ - return 0; -} - -/* Fetch data and put it in the output buffer. Assumes state->x.have is 0. - Data is either copied from the input file or decompressed from the input - file depending on state->how. If state->how is LOOK, then a gzip header is - looked for to determine whether to copy or decompress. Returns -1 on error, - otherwise 0. gz_fetch() will leave state->how as COPY or GZIP unless the - end of the input file has been reached and all data has been processed. */ -static int gz_fetch(gz_state *state) { - PREFIX3(stream) *strm = &(state->strm); - - do { - switch (state->how) { - case LOOK: /* -> LOOK, COPY (only if never GZIP), or GZIP */ - if (gz_look(state) == -1) - return -1; - if (state->how == LOOK) - return 0; - break; - case COPY: /* -> COPY */ - if (gz_load(state, state->out, state->size << 1, &(state->x.have)) - == -1) - return -1; - state->x.next = state->out; - return 0; - case GZIP: /* -> GZIP or LOOK (if end of gzip stream) */ - strm->avail_out = state->size << 1; - strm->next_out = state->out; - if (gz_decomp(state) == -1) - return -1; - } - } while (state->x.have == 0 && (!state->eof || strm->avail_in)); - return 0; -} - -/* Skip len uncompressed bytes of output. Return -1 on error, 0 on success. */ -static int gz_skip(gz_state *state, z_off64_t len) { - unsigned n; - - /* skip over len bytes or reach end-of-file, whichever comes first */ - while (len) - /* skip over whatever is in output buffer */ - if (state->x.have) { - n = GT_OFF(state->x.have) || (z_off64_t)state->x.have > len ? - (unsigned)len : state->x.have; - state->x.have -= n; - state->x.next += n; - state->x.pos += n; - len -= n; - } else if (state->eof && state->strm.avail_in == 0) { - /* output buffer empty -- return if we're at the end of the input */ - break; - } else { - /* need more data to skip -- load up output buffer */ - /* get more output, looking for header if required */ - if (gz_fetch(state) == -1) - return -1; - } - return 0; -} - -/* Read len bytes into buf from file, or less than len up to the end of the - input. Return the number of bytes read. If zero is returned, either the - end of file was reached, or there was an error. state->err must be - consulted in that case to determine which. */ -static size_t gz_read(gz_state *state, void *buf, size_t len) { - size_t got; - unsigned n; - - /* if len is zero, avoid unnecessary operations */ - if (len == 0) - return 0; - - /* process a skip request */ - if (state->seek) { - state->seek = 0; - if (gz_skip(state, state->skip) == -1) - return 0; - } - - /* get len bytes to buf, or less than len if at the end */ - got = 0; - do { - /* set n to the maximum amount of len that fits in an unsigned int */ - n = (unsigned)-1; - if (n > len) - n = (unsigned)len; - - /* first just try copying data from the output buffer */ - if (state->x.have) { - if (state->x.have < n) - n = state->x.have; - memcpy(buf, state->x.next, n); - state->x.next += n; - state->x.have -= n; - } - - /* output buffer empty -- return if we're at the end of the input */ - else if (state->eof && state->strm.avail_in == 0) { - state->past = 1; /* tried to read past end */ - break; - } - - /* need output data -- for small len or new stream load up our output - buffer */ - else if (state->how == LOOK || n < (state->size << 1)) { - /* get more output, looking for header if required */ - if (gz_fetch(state) == -1) - return 0; - continue; /* no progress yet -- go back to copy above */ - /* the copy above assures that we will leave with space in the - output buffer, allowing at least one gzungetc() to succeed */ - } - - /* large len -- read directly into user buffer */ - else if (state->how == COPY) { /* read directly */ - if (gz_load(state, (unsigned char *)buf, n, &n) == -1) - return 0; - } - - /* large len -- decompress directly into user buffer */ - else { /* state->how == GZIP */ - state->strm.avail_out = n; - state->strm.next_out = (unsigned char *)buf; - if (gz_decomp(state) == -1) - return 0; - n = state->x.have; - state->x.have = 0; - } - - /* update progress */ - len -= n; - buf = (char *)buf + n; - got += n; - state->x.pos += n; - } while (len); - - /* return number of bytes read into user buffer */ - return got; -} - -/* -- see zlib.h -- */ -int ZEXPORT PREFIX(gzread)(gzFile file, void *buf, unsigned len) { - gz_state *state; - - /* get internal structure */ - if (file == NULL) - return -1; - state = (gz_state *)file; - - /* check that we're reading and that there's no (serious) error */ - if (state->mode != GZ_READ || - (state->err != Z_OK && state->err != Z_BUF_ERROR)) - return -1; - - /* since an int is returned, make sure len fits in one, otherwise return - with an error (this avoids a flaw in the interface) */ - if ((int)len < 0) { - gz_error(state, Z_STREAM_ERROR, "request does not fit in an int"); - return -1; - } - - /* read len or fewer bytes to buf */ - len = (unsigned)gz_read(state, buf, len); - - /* check for an error */ - if (len == 0 && state->err != Z_OK && state->err != Z_BUF_ERROR) - return -1; - - /* return the number of bytes read (this is assured to fit in an int) */ - return (int)len; -} - -/* -- see zlib.h -- */ -size_t ZEXPORT PREFIX(gzfread)(void *buf, size_t size, size_t nitems, gzFile file) { - size_t len; - gz_state *state; - - /* Exit early if size is zero, also prevents potential division by zero */ - if (size == 0) - return 0; - - /* get internal structure */ - if (file == NULL) - return 0; - state = (gz_state *)file; - - /* check that we're reading and that there's no (serious) error */ - if (state->mode != GZ_READ || - (state->err != Z_OK && state->err != Z_BUF_ERROR)) - return 0; - - /* compute bytes to read -- error on overflow */ - len = nitems * size; - if (size && len / size != nitems) { - gz_error(state, Z_STREAM_ERROR, "request does not fit in a size_t"); - return 0; - } - - /* read len or fewer bytes to buf, return the number of full items read */ - return len ? gz_read(state, buf, len) / size : 0; -} - -/* -- see zlib.h -- */ -#undef gzgetc -#undef zng_gzgetc -int ZEXPORT PREFIX(gzgetc)(gzFile file) { - unsigned char buf[1]; - gz_state *state; - - /* get internal structure */ - if (file == NULL) - return -1; - state = (gz_state *)file; - - /* check that we're reading and that there's no (serious) error */ - if (state->mode != GZ_READ || (state->err != Z_OK && state->err != Z_BUF_ERROR)) - return -1; - - /* try output buffer (no need to check for skip request) */ - if (state->x.have) { - state->x.have--; - state->x.pos++; - return *(state->x.next)++; - } - - /* nothing there -- try gz_read() */ - return gz_read(state, buf, 1) < 1 ? -1 : buf[0]; -} - -int ZEXPORT PREFIX(gzgetc_)(gzFile file) { - return PREFIX(gzgetc)(file); -} - -/* -- see zlib.h -- */ -int ZEXPORT PREFIX(gzungetc)(int c, gzFile file) { - gz_state *state; - - /* get internal structure */ - if (file == NULL) - return -1; - state = (gz_state *)file; - - /* check that we're reading and that there's no (serious) error */ - if (state->mode != GZ_READ || (state->err != Z_OK && state->err != Z_BUF_ERROR)) - return -1; - - /* process a skip request */ - if (state->seek) { - state->seek = 0; - if (gz_skip(state, state->skip) == -1) - return -1; - } - - /* can't push EOF */ - if (c < 0) - return -1; - - /* if output buffer empty, put byte at end (allows more pushing) */ - if (state->x.have == 0) { - state->x.have = 1; - state->x.next = state->out + (state->size << 1) - 1; - state->x.next[0] = (unsigned char)c; - state->x.pos--; - state->past = 0; - return c; - } - - /* if no room, give up (must have already done a gzungetc()) */ - if (state->x.have == (state->size << 1)) { - gz_error(state, Z_DATA_ERROR, "out of room to push characters"); - return -1; - } - - /* slide output data if needed and insert byte before existing data */ - if (state->x.next == state->out) { - unsigned char *src = state->out + state->x.have; - unsigned char *dest = state->out + (state->size << 1); - while (src > state->out) - *--dest = *--src; - state->x.next = dest; - } - state->x.have++; - state->x.next--; - state->x.next[0] = (unsigned char)c; - state->x.pos--; - state->past = 0; - return c; -} - -/* -- see zlib.h -- */ -char * ZEXPORT PREFIX(gzgets)(gzFile file, char *buf, int len) { - unsigned left, n; - char *str; - unsigned char *eol; - gz_state *state; - - /* check parameters and get internal structure */ - if (file == NULL || buf == NULL || len < 1) - return NULL; - state = (gz_state *)file; - - /* check that we're reading and that there's no (serious) error */ - if (state->mode != GZ_READ || (state->err != Z_OK && state->err != Z_BUF_ERROR)) - return NULL; - - /* process a skip request */ - if (state->seek) { - state->seek = 0; - if (gz_skip(state, state->skip) == -1) - return NULL; - } - - /* copy output bytes up to new line or len - 1, whichever comes first -- - append a terminating zero to the string (we don't check for a zero in - the contents, let the user worry about that) */ - str = buf; - left = (unsigned)len - 1; - if (left) do { - /* assure that something is in the output buffer */ - if (state->x.have == 0 && gz_fetch(state) == -1) - return NULL; /* error */ - if (state->x.have == 0) { /* end of file */ - state->past = 1; /* read past end */ - break; /* return what we have */ - } - - /* look for end-of-line in current output buffer */ - n = state->x.have > left ? left : state->x.have; - eol = (unsigned char *)memchr(state->x.next, '\n', n); - if (eol != NULL) - n = (unsigned)(eol - state->x.next) + 1; - - /* copy through end-of-line, or remainder if not found */ - memcpy(buf, state->x.next, n); - state->x.have -= n; - state->x.next += n; - state->x.pos += n; - left -= n; - buf += n; - } while (left && eol == NULL); - - /* return terminated string, or if nothing, end of file */ - if (buf == str) - return NULL; - buf[0] = 0; - return str; -} - -/* -- see zlib.h -- */ -int ZEXPORT PREFIX(gzdirect)(gzFile file) { - gz_state *state; - - /* get internal structure */ - if (file == NULL) - return 0; - - state = (gz_state *)file; - - /* if the state is not known, but we can find out, then do so (this is - mainly for right after a gzopen() or gzdopen()) */ - if (state->mode == GZ_READ && state->how == LOOK && state->x.have == 0) - (void)gz_look(state); - - /* return 1 if transparent, 0 if processing a gzip stream */ - return state->direct; -} - -/* -- see zlib.h -- */ -int ZEXPORT PREFIX(gzclose_r)(gzFile file) { - int ret, err; - gz_state *state; - - /* get internal structure */ - if (file == NULL) - return Z_STREAM_ERROR; - - state = (gz_state *)file; - - /* check that we're reading */ - if (state->mode != GZ_READ) - return Z_STREAM_ERROR; - - /* free memory and close file */ - if (state->size) { - PREFIX(inflateEnd)(&(state->strm)); - free(state->out); - free(state->in); - } - err = state->err == Z_BUF_ERROR ? Z_BUF_ERROR : Z_OK; - gz_error(state, Z_OK, NULL); - free(state->path); - ret = close(state->fd); - free(state); - return ret ? Z_ERRNO : err; -} diff --git a/libs/zlibng/gzwrite.c b/libs/zlibng/gzwrite.c deleted file mode 100644 index 20e1d5c63..000000000 --- a/libs/zlibng/gzwrite.c +++ /dev/null @@ -1,516 +0,0 @@ -/* gzwrite.c -- zlib functions for writing gzip files - * Copyright (C) 2004-2017 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -#include "zbuild.h" -#include -#include "gzguts.h" - -/* Local functions */ -static int gz_init(gz_state *); -static int gz_comp(gz_state *, int); -static int gz_zero(gz_state *, z_off64_t); -static size_t gz_write(gz_state *, void const *, size_t); - -/* Initialize state for writing a gzip file. Mark initialization by setting - state->size to non-zero. Return -1 on a memory allocation failure, or 0 on - success. */ -static int gz_init(gz_state *state) { - int ret; - PREFIX3(stream) *strm = &(state->strm); - - /* allocate input buffer (double size for gzprintf) */ - state->in = (unsigned char *)malloc(state->want << 1); - if (state->in == NULL) { - gz_error(state, Z_MEM_ERROR, "out of memory"); - return -1; - } - - /* only need output buffer and deflate state if compressing */ - if (!state->direct) { - /* allocate output buffer */ - state->out = (unsigned char *)malloc(state->want); - if (state->out == NULL) { - free(state->in); - gz_error(state, Z_MEM_ERROR, "out of memory"); - return -1; - } - - /* allocate deflate memory, set up for gzip compression */ - strm->zalloc = NULL; - strm->zfree = NULL; - strm->opaque = NULL; - ret = PREFIX(deflateInit2)(strm, state->level, Z_DEFLATED, MAX_WBITS + 16, DEF_MEM_LEVEL, state->strategy); - if (ret != Z_OK) { - free(state->out); - free(state->in); - gz_error(state, Z_MEM_ERROR, "out of memory"); - return -1; - } - strm->next_in = NULL; - } - - /* mark state as initialized */ - state->size = state->want; - - /* initialize write buffer if compressing */ - if (!state->direct) { - strm->avail_out = state->size; - strm->next_out = state->out; - state->x.next = strm->next_out; - } - return 0; -} - -/* Compress whatever is at avail_in and next_in and write to the output file. - Return -1 if there is an error writing to the output file or if gz_init() - fails to allocate memory, otherwise 0. flush is assumed to be a valid - deflate() flush value. If flush is Z_FINISH, then the deflate() state is - reset to start a new gzip stream. If gz->direct is true, then simply write - to the output file without compressing, and ignore flush. */ -static int gz_comp(gz_state *state, int flush) { - int ret; - ssize_t got; - unsigned have; - PREFIX3(stream) *strm = &(state->strm); - - /* allocate memory if this is the first time through */ - if (state->size == 0 && gz_init(state) == -1) - return -1; - - /* write directly if requested */ - if (state->direct) { - got = write(state->fd, strm->next_in, strm->avail_in); - if (got < 0 || (unsigned)got != strm->avail_in) { - gz_error(state, Z_ERRNO, zstrerror()); - return -1; - } - strm->avail_in = 0; - return 0; - } - - /* run deflate() on provided input until it produces no more output */ - ret = Z_OK; - do { - /* write out current buffer contents if full, or if flushing, but if - doing Z_FINISH then don't write until we get to Z_STREAM_END */ - if (strm->avail_out == 0 || (flush != Z_NO_FLUSH && (flush != Z_FINISH || ret == Z_STREAM_END))) { - have = (unsigned)(strm->next_out - state->x.next); - if (have && ((got = write(state->fd, state->x.next, (unsigned long)have)) < 0 || (unsigned)got != have)) { - gz_error(state, Z_ERRNO, zstrerror()); - return -1; - } - if (strm->avail_out == 0) { - strm->avail_out = state->size; - strm->next_out = state->out; - state->x.next = state->out; - } - state->x.next = strm->next_out; - } - - /* compress */ - have = strm->avail_out; - ret = PREFIX(deflate)(strm, flush); - if (ret == Z_STREAM_ERROR) { - gz_error(state, Z_STREAM_ERROR, "internal error: deflate stream corrupt"); - return -1; - } - have -= strm->avail_out; - } while (have); - - /* if that completed a deflate stream, allow another to start */ - if (flush == Z_FINISH) - PREFIX(deflateReset)(strm); - - /* all done, no errors */ - return 0; -} - -/* Compress len zeros to output. Return -1 on a write error or memory - allocation failure by gz_comp(), or 0 on success. */ -static int gz_zero(gz_state *state, z_off64_t len) { - int first; - unsigned n; - PREFIX3(stream) *strm = &(state->strm); - - /* consume whatever's left in the input buffer */ - if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1) - return -1; - - /* compress len zeros (len guaranteed > 0) */ - first = 1; - while (len) { - n = GT_OFF(state->size) || (z_off64_t)state->size > len ? (unsigned)len : state->size; - if (first) { - memset(state->in, 0, n); - first = 0; - } - strm->avail_in = n; - strm->next_in = state->in; - state->x.pos += n; - if (gz_comp(state, Z_NO_FLUSH) == -1) - return -1; - len -= n; - } - return 0; -} - -/* Write len bytes from buf to file. Return the number of bytes written. If - the returned value is less than len, then there was an error. */ -static size_t gz_write(gz_state *state, void const *buf, size_t len) { - size_t put = len; - - /* if len is zero, avoid unnecessary operations */ - if (len == 0) - return 0; - - /* allocate memory if this is the first time through */ - if (state->size == 0 && gz_init(state) == -1) - return 0; - - /* check for seek request */ - if (state->seek) { - state->seek = 0; - if (gz_zero(state, state->skip) == -1) - return 0; - } - - /* for small len, copy to input buffer, otherwise compress directly */ - if (len < state->size) { - /* copy to input buffer, compress when full */ - do { - unsigned have, copy; - - if (state->strm.avail_in == 0) - state->strm.next_in = state->in; - have = (unsigned)((state->strm.next_in + state->strm.avail_in) - - state->in); - copy = state->size - have; - if (copy > len) - copy = (unsigned)len; - memcpy(state->in + have, buf, copy); - state->strm.avail_in += copy; - state->x.pos += copy; - buf = (const char *)buf + copy; - len -= copy; - if (len && gz_comp(state, Z_NO_FLUSH) == -1) - return 0; - } while (len); - } else { - /* consume whatever's left in the input buffer */ - if (state->strm.avail_in && gz_comp(state, Z_NO_FLUSH) == -1) - return 0; - - /* directly compress user buffer to file */ - state->strm.next_in = (const unsigned char *)buf; - do { - unsigned n = (unsigned)-1; - if (n > len) - n = (unsigned)len; - state->strm.avail_in = n; - state->x.pos += n; - if (gz_comp(state, Z_NO_FLUSH) == -1) - return 0; - len -= n; - } while (len); - } - - /* input was all buffered or compressed */ - return put; -} - -/* -- see zlib.h -- */ -int ZEXPORT PREFIX(gzwrite)(gzFile file, void const *buf, unsigned len) { - gz_state *state; - - /* get internal structure */ - if (file == NULL) - return 0; - state = (gz_state *)file; - - /* check that we're writing and that there's no error */ - if (state->mode != GZ_WRITE || state->err != Z_OK) - return 0; - - /* since an int is returned, make sure len fits in one, otherwise return - with an error (this avoids a flaw in the interface) */ - if ((int)len < 0) { - gz_error(state, Z_DATA_ERROR, "requested length does not fit in int"); - return 0; - } - - /* write len bytes from buf (the return value will fit in an int) */ - return (int)gz_write(state, buf, len); -} - -/* -- see zlib.h -- */ -size_t ZEXPORT PREFIX(gzfwrite)(void const *buf, size_t size, size_t nitems, gzFile file) { - size_t len; - gz_state *state; - - /* Exit early if size is zero, also prevents potential division by zero */ - if (size == 0) - return 0; - - /* get internal structure */ - if (file == NULL) - return 0; - state = (gz_state *)file; - - /* check that we're writing and that there's no error */ - if (state->mode != GZ_WRITE || state->err != Z_OK) - return 0; - - /* compute bytes to read -- error on overflow */ - len = nitems * size; - if (size && len / size != nitems) { - gz_error(state, Z_STREAM_ERROR, "request does not fit in a size_t"); - return 0; - } - - /* write len bytes to buf, return the number of full items written */ - return len ? gz_write(state, buf, len) / size : 0; -} - -/* -- see zlib.h -- */ -int ZEXPORT PREFIX(gzputc)(gzFile file, int c) { - unsigned have; - unsigned char buf[1]; - gz_state *state; - PREFIX3(stream) *strm; - - /* get internal structure */ - if (file == NULL) - return -1; - state = (gz_state *)file; - strm = &(state->strm); - - /* check that we're writing and that there's no error */ - if (state->mode != GZ_WRITE || state->err != Z_OK) - return -1; - - /* check for seek request */ - if (state->seek) { - state->seek = 0; - if (gz_zero(state, state->skip) == -1) - return -1; - } - - /* try writing to input buffer for speed (state->size == 0 if buffer not - initialized) */ - if (state->size) { - if (strm->avail_in == 0) - strm->next_in = state->in; - have = (unsigned)((strm->next_in + strm->avail_in) - state->in); - if (have < state->size) { - state->in[have] = (unsigned char)c; - strm->avail_in++; - state->x.pos++; - return c & 0xff; - } - } - - /* no room in buffer or not initialized, use gz_write() */ - buf[0] = (unsigned char)c; - if (gz_write(state, buf, 1) != 1) - return -1; - return c & 0xff; -} - -/* -- see zlib.h -- */ -int ZEXPORT PREFIX(gzputs)(gzFile file, const char *s) { - size_t len, put; - gz_state *state; - - /* get internal structure */ - if (file == NULL) - return -1; - state = (gz_state *)file; - - /* check that we're writing and that there's no error */ - if (state->mode != GZ_WRITE || state->err != Z_OK) - return -1; - - /* write string */ - len = strlen(s); - if ((int)len < 0 || (unsigned)len != len) { - gz_error(state, Z_STREAM_ERROR, "string length does not fit in int"); - return -1; - } - put = gz_write(state, s, len); - return put < len ? -1 : (int)len; -} - -/* -- see zlib.h -- */ -int ZEXPORTVA PREFIX(gzvprintf)(gzFile file, const char *format, va_list va) { - int len; - unsigned left; - char *next; - gz_state *state; - PREFIX3(stream) *strm; - - /* get internal structure */ - if (file == NULL) - return Z_STREAM_ERROR; - state = (gz_state *)file; - strm = &(state->strm); - - /* check that we're writing and that there's no error */ - if (state->mode != GZ_WRITE || state->err != Z_OK) - return Z_STREAM_ERROR; - - /* make sure we have some buffer space */ - if (state->size == 0 && gz_init(state) == -1) - return state->err; - - /* check for seek request */ - if (state->seek) { - state->seek = 0; - if (gz_zero(state, state->skip) == -1) - return state->err; - } - - /* do the printf() into the input buffer, put length in len -- the input - buffer is double-sized just for this function, so there is guaranteed to - be state->size bytes available after the current contents */ - if (strm->avail_in == 0) - strm->next_in = state->in; - next = (char *)(state->in + (strm->next_in - state->in) + strm->avail_in); - next[state->size - 1] = 0; - len = vsnprintf(next, state->size, format, va); - - /* check that printf() results fit in buffer */ - if (len == 0 || (unsigned)len >= state->size || next[state->size - 1] != 0) - return 0; - - /* update buffer and position, compress first half if past that */ - strm->avail_in += (unsigned)len; - state->x.pos += len; - if (strm->avail_in >= state->size) { - left = strm->avail_in - state->size; - strm->avail_in = state->size; - if (gz_comp(state, Z_NO_FLUSH) == -1) - return state->err; - memmove(state->in, state->in + state->size, left); - strm->next_in = state->in; - strm->avail_in = left; - } - return len; -} - -int ZEXPORTVA PREFIX(gzprintf)(gzFile file, const char *format, ...) { - va_list va; - int ret; - - va_start(va, format); - ret = PREFIX(gzvprintf)(file, format, va); - va_end(va); - return ret; -} - -/* -- see zlib.h -- */ -int ZEXPORT PREFIX(gzflush)(gzFile file, int flush) { - gz_state *state; - - /* get internal structure */ - if (file == NULL) - return Z_STREAM_ERROR; - state = (gz_state *)file; - - /* check that we're writing and that there's no error */ - if (state->mode != GZ_WRITE || state->err != Z_OK) - return Z_STREAM_ERROR; - - /* check flush parameter */ - if (flush < 0 || flush > Z_FINISH) - return Z_STREAM_ERROR; - - /* check for seek request */ - if (state->seek) { - state->seek = 0; - if (gz_zero(state, state->skip) == -1) - return state->err; - } - - /* compress remaining data with requested flush */ - (void)gz_comp(state, flush); - return state->err; -} - -/* -- see zlib.h -- */ -int ZEXPORT PREFIX(gzsetparams)(gzFile file, int level, int strategy) { - gz_state *state; - PREFIX3(stream) *strm; - - /* get internal structure */ - if (file == NULL) - return Z_STREAM_ERROR; - state = (gz_state *)file; - strm = &(state->strm); - - /* check that we're writing and that there's no error */ - if (state->mode != GZ_WRITE || state->err != Z_OK) - return Z_STREAM_ERROR; - - /* if no change is requested, then do nothing */ - if (level == state->level && strategy == state->strategy) - return Z_OK; - - /* check for seek request */ - if (state->seek) { - state->seek = 0; - if (gz_zero(state, state->skip) == -1) - return state->err; - } - - /* change compression parameters for subsequent input */ - if (state->size) { - /* flush previous input with previous parameters before changing */ - if (strm->avail_in && gz_comp(state, Z_BLOCK) == -1) - return state->err; - PREFIX(deflateParams)(strm, level, strategy); - } - state->level = level; - state->strategy = strategy; - return Z_OK; -} - -/* -- see zlib.h -- */ -int ZEXPORT PREFIX(gzclose_w)(gzFile file) { - int ret = Z_OK; - gz_state *state; - - /* get internal structure */ - if (file == NULL) - return Z_STREAM_ERROR; - state = (gz_state *)file; - - /* check that we're writing */ - if (state->mode != GZ_WRITE) - return Z_STREAM_ERROR; - - /* check for seek request */ - if (state->seek) { - state->seek = 0; - if (gz_zero(state, state->skip) == -1) - ret = state->err; - } - - /* flush, free memory, and close file */ - if (gz_comp(state, Z_FINISH) == -1) - ret = state->err; - if (state->size) { - if (!state->direct) { - (void)PREFIX(deflateEnd)(&(state->strm)); - free(state->out); - } - free(state->in); - } - gz_error(state, Z_OK, NULL); - free(state->path); - if (close(state->fd) == -1) - ret = Z_ERRNO; - free(state); - return ret; -} diff --git a/libs/zlibng/infback.c b/libs/zlibng/infback.c deleted file mode 100644 index b4fb562b1..000000000 --- a/libs/zlibng/infback.c +++ /dev/null @@ -1,614 +0,0 @@ -/* infback.c -- inflate using a call-back interface - * Copyright (C) 1995-2016 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* - This code is largely copied from inflate.c. Normally either infback.o or - inflate.o would be linked into an application--not both. The interface - with inffast.c is retained so that optimized assembler-coded versions of - inflate_fast() can be used with either inflate.c or infback.c. - */ - -#include "zbuild.h" -#include "zutil.h" -#include "inftrees.h" -#include "inflate.h" -#include "inffast.h" - -/* function prototypes */ -static void fixedtables(struct inflate_state *state); - -/* - strm provides memory allocation functions in zalloc and zfree, or - NULL to use the library memory allocation functions. - - windowBits is in the range 8..15, and window is a user-supplied - window and output buffer that is 2**windowBits bytes. - */ -int ZEXPORT PREFIX(inflateBackInit_)(PREFIX3(stream) *strm, int windowBits, unsigned char *window, - const char *version, int stream_size) { - struct inflate_state *state; - - if (version == NULL || version[0] != PREFIX2(VERSION)[0] || stream_size != (int)(sizeof(PREFIX3(stream)))) - return Z_VERSION_ERROR; - if (strm == NULL || window == NULL || windowBits < 8 || windowBits > 15) - return Z_STREAM_ERROR; - strm->msg = NULL; /* in case we return an error */ - if (strm->zalloc == NULL) { - strm->zalloc = zcalloc; - strm->opaque = NULL; - } - if (strm->zfree == NULL) - strm->zfree = zcfree; - state = (struct inflate_state *)ZALLOC(strm, 1, sizeof(struct inflate_state)); - if (state == NULL) - return Z_MEM_ERROR; - Tracev((stderr, "inflate: allocated\n")); - strm->state = (struct internal_state *)state; - state->dmax = 32768U; - state->wbits = (unsigned int)windowBits; - state->wsize = 1U << windowBits; - state->window = window; - state->wnext = 0; - state->whave = 0; - return Z_OK; -} - -/* - Return state with length and distance decoding tables and index sizes set to - fixed code decoding. Normally this returns fixed tables from inffixed.h. - If BUILDFIXED is defined, then instead this routine builds the tables the - first time it's called, and returns those tables the first time and - thereafter. This reduces the size of the code by about 2K bytes, in - exchange for a little execution time. However, BUILDFIXED should not be - used for threaded applications, since the rewriting of the tables and virgin - may not be thread-safe. - */ -static void fixedtables(struct inflate_state *state) { -#ifdef BUILDFIXED - static int virgin = 1; - static code *lenfix, *distfix; - static code fixed[544]; - - /* build fixed huffman tables if first call (may not be thread safe) */ - if (virgin) { - unsigned sym, bits; - static code *next; - - /* literal/length table */ - sym = 0; - while (sym < 144) state->lens[sym++] = 8; - while (sym < 256) state->lens[sym++] = 9; - while (sym < 280) state->lens[sym++] = 7; - while (sym < 288) state->lens[sym++] = 8; - next = fixed; - lenfix = next; - bits = 9; - inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work); - - /* distance table */ - sym = 0; - while (sym < 32) state->lens[sym++] = 5; - distfix = next; - bits = 5; - inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work); - - /* do this just once */ - virgin = 0; - } -#else /* !BUILDFIXED */ -# include "inffixed.h" -#endif /* BUILDFIXED */ - state->lencode = lenfix; - state->lenbits = 9; - state->distcode = distfix; - state->distbits = 5; -} - -/* Macros for inflateBack(): */ - -/* Load returned state from inflate_fast() */ -#define LOAD() \ - do { \ - put = strm->next_out; \ - left = strm->avail_out; \ - next = strm->next_in; \ - have = strm->avail_in; \ - hold = state->hold; \ - bits = state->bits; \ - } while (0) - -/* Set state from registers for inflate_fast() */ -#define RESTORE() \ - do { \ - strm->next_out = put; \ - strm->avail_out = left; \ - strm->next_in = next; \ - strm->avail_in = have; \ - state->hold = hold; \ - state->bits = bits; \ - } while (0) - -/* Clear the input bit accumulator */ -#define INITBITS() \ - do { \ - hold = 0; \ - bits = 0; \ - } while (0) - -/* Assure that some input is available. If input is requested, but denied, - then return a Z_BUF_ERROR from inflateBack(). */ -#define PULL() \ - do { \ - if (have == 0) { \ - have = in(in_desc, &next); \ - if (have == 0) { \ - next = NULL; \ - ret = Z_BUF_ERROR; \ - goto inf_leave; \ - } \ - } \ - } while (0) - -/* Get a byte of input into the bit accumulator, or return from inflateBack() - with an error if there is no input available. */ -#define PULLBYTE() \ - do { \ - PULL(); \ - have--; \ - hold += (*next++ << bits); \ - bits += 8; \ - } while (0) - -/* Assure that there are at least n bits in the bit accumulator. If there is - not enough available input to do that, then return from inflateBack() with - an error. */ -#define NEEDBITS(n) \ - do { \ - while (bits < (unsigned)(n)) \ - PULLBYTE(); \ - } while (0) - -/* Return the low n bits of the bit accumulator (n < 16) */ -#define BITS(n) \ - (hold & ((1U << (n)) - 1)) - -/* Remove n bits from the bit accumulator */ -#define DROPBITS(n) \ - do { \ - hold >>= (n); \ - bits -= (unsigned)(n); \ - } while (0) - -/* Remove zero to seven bits as needed to go to a byte boundary */ -#define BYTEBITS() \ - do { \ - hold >>= bits & 7; \ - bits -= bits & 7; \ - } while (0) - -/* Assure that some output space is available, by writing out the window - if it's full. If the write fails, return from inflateBack() with a - Z_BUF_ERROR. */ -#define ROOM() \ - do { \ - if (left == 0) { \ - put = state->window; \ - left = state->wsize; \ - state->whave = left; \ - if (out(out_desc, put, left)) { \ - ret = Z_BUF_ERROR; \ - goto inf_leave; \ - } \ - } \ - } while (0) - -/* - strm provides the memory allocation functions and window buffer on input, - and provides information on the unused input on return. For Z_DATA_ERROR - returns, strm will also provide an error message. - - in() and out() are the call-back input and output functions. When - inflateBack() needs more input, it calls in(). When inflateBack() has - filled the window with output, or when it completes with data in the - window, it calls out() to write out the data. The application must not - change the provided input until in() is called again or inflateBack() - returns. The application must not change the window/output buffer until - inflateBack() returns. - - in() and out() are called with a descriptor parameter provided in the - inflateBack() call. This parameter can be a structure that provides the - information required to do the read or write, as well as accumulated - information on the input and output such as totals and check values. - - in() should return zero on failure. out() should return non-zero on - failure. If either in() or out() fails, than inflateBack() returns a - Z_BUF_ERROR. strm->next_in can be checked for NULL to see whether it - was in() or out() that caused in the error. Otherwise, inflateBack() - returns Z_STREAM_END on success, Z_DATA_ERROR for an deflate format - error, or Z_MEM_ERROR if it could not allocate memory for the state. - inflateBack() can also return Z_STREAM_ERROR if the input parameters - are not correct, i.e. strm is NULL or the state was not initialized. - */ -int ZEXPORT PREFIX(inflateBack)(PREFIX3(stream) *strm, in_func in, void *in_desc, out_func out, void *out_desc) { - struct inflate_state *state; - const unsigned char *next; /* next input */ - unsigned char *put; /* next output */ - unsigned have, left; /* available input and output */ - uint32_t hold; /* bit buffer */ - unsigned bits; /* bits in bit buffer */ - unsigned copy; /* number of stored or match bytes to copy */ - unsigned char *from; /* where to copy match bytes from */ - code here; /* current decoding table entry */ - code last; /* parent table entry */ - unsigned len; /* length to copy for repeats, bits to drop */ - int ret; /* return code */ - static const uint16_t order[19] = /* permutation of code lengths */ - {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15}; - - /* Check that the strm exists and that the state was initialized */ - if (strm == NULL || strm->state == NULL) - return Z_STREAM_ERROR; - state = (struct inflate_state *)strm->state; - - /* Reset the state */ - strm->msg = NULL; - state->mode = TYPE; - state->last = 0; - state->whave = 0; - next = strm->next_in; - have = next != NULL ? strm->avail_in : 0; - hold = 0; - bits = 0; - put = state->window; - left = state->wsize; - - /* Inflate until end of block marked as last */ - for (;;) - switch (state->mode) { - case TYPE: - /* determine and dispatch block type */ - if (state->last) { - BYTEBITS(); - state->mode = DONE; - break; - } - NEEDBITS(3); - state->last = BITS(1); - DROPBITS(1); - switch (BITS(2)) { - case 0: /* stored block */ - Tracev((stderr, "inflate: stored block%s\n", state->last ? " (last)" : "")); - state->mode = STORED; - break; - case 1: /* fixed block */ - fixedtables(state); - Tracev((stderr, "inflate: fixed codes block%s\n", state->last ? " (last)" : "")); - state->mode = LEN; /* decode codes */ - break; - case 2: /* dynamic block */ - Tracev((stderr, "inflate: dynamic codes block%s\n", state->last ? " (last)" : "")); - state->mode = TABLE; - break; - case 3: - strm->msg = (char *)"invalid block type"; - state->mode = BAD; - } - DROPBITS(2); - break; - - case STORED: - /* get and verify stored block length */ - BYTEBITS(); /* go to byte boundary */ - NEEDBITS(32); - if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) { - strm->msg = (char *)"invalid stored block lengths"; - state->mode = BAD; - break; - } - state->length = (uint16_t)hold; - Tracev((stderr, "inflate: stored length %u\n", state->length)); - INITBITS(); - - /* copy stored block from input to output */ - while (state->length != 0) { - copy = state->length; - PULL(); - ROOM(); - if (copy > have) - copy = have; - if (copy > left) - copy = left; - memcpy(put, next, copy); - have -= copy; - next += copy; - left -= copy; - put += copy; - state->length -= copy; - } - Tracev((stderr, "inflate: stored end\n")); - state->mode = TYPE; - break; - - case TABLE: - /* get dynamic table entries descriptor */ - NEEDBITS(14); - state->nlen = BITS(5) + 257; - DROPBITS(5); - state->ndist = BITS(5) + 1; - DROPBITS(5); - state->ncode = BITS(4) + 4; - DROPBITS(4); -#ifndef PKZIP_BUG_WORKAROUND - if (state->nlen > 286 || state->ndist > 30) { - strm->msg = (char *)"too many length or distance symbols"; - state->mode = BAD; - break; - } -#endif - Tracev((stderr, "inflate: table sizes ok\n")); - - /* get code length code lengths (not a typo) */ - state->have = 0; - while (state->have < state->ncode) { - NEEDBITS(3); - state->lens[order[state->have++]] = (uint16_t)BITS(3); - DROPBITS(3); - } - while (state->have < 19) - state->lens[order[state->have++]] = 0; - state->next = state->codes; - state->lencode = (code const *)(state->next); - state->lenbits = 7; - ret = inflate_table(CODES, state->lens, 19, &(state->next), &(state->lenbits), state->work); - if (ret) { - strm->msg = (char *)"invalid code lengths set"; - state->mode = BAD; - break; - } - Tracev((stderr, "inflate: code lengths ok\n")); - - /* get length and distance code code lengths */ - state->have = 0; - while (state->have < state->nlen + state->ndist) { - for (;;) { - here = state->lencode[BITS(state->lenbits)]; - if (here.bits <= bits) - break; - PULLBYTE(); - } - if (here.val < 16) { - DROPBITS(here.bits); - state->lens[state->have++] = here.val; - } else { - if (here.val == 16) { - NEEDBITS(here.bits + 2); - DROPBITS(here.bits); - if (state->have == 0) { - strm->msg = (char *)"invalid bit length repeat"; - state->mode = BAD; - break; - } - len = (unsigned)(state->lens[state->have - 1]); - copy = 3 + BITS(2); - DROPBITS(2); - } else if (here.val == 17) { - NEEDBITS(here.bits + 3); - DROPBITS(here.bits); - len = 0; - copy = 3 + BITS(3); - DROPBITS(3); - } else { - NEEDBITS(here.bits + 7); - DROPBITS(here.bits); - len = 0; - copy = 11 + BITS(7); - DROPBITS(7); - } - if (state->have + copy > state->nlen + state->ndist) { - strm->msg = (char *)"invalid bit length repeat"; - state->mode = BAD; - break; - } - while (copy--) - state->lens[state->have++] = (uint16_t)len; - } - } - - /* handle error breaks in while */ - if (state->mode == BAD) - break; - - /* check for end-of-block code (better have one) */ - if (state->lens[256] == 0) { - strm->msg = (char *)"invalid code -- missing end-of-block"; - state->mode = BAD; - break; - } - - /* build code tables -- note: do not change the lenbits or distbits - values here (9 and 6) without reading the comments in inftrees.h - concerning the ENOUGH constants, which depend on those values */ - state->next = state->codes; - state->lencode = (code const *)(state->next); - state->lenbits = 9; - ret = inflate_table(LENS, state->lens, state->nlen, &(state->next), &(state->lenbits), state->work); - if (ret) { - strm->msg = (char *)"invalid literal/lengths set"; - state->mode = BAD; - break; - } - state->distcode = (code const *)(state->next); - state->distbits = 6; - ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist, - &(state->next), &(state->distbits), state->work); - if (ret) { - strm->msg = (char *)"invalid distances set"; - state->mode = BAD; - break; - } - Tracev((stderr, "inflate: codes ok\n")); - state->mode = LEN; - - case LEN: - /* use inflate_fast() if we have enough input and output */ - if (have >= INFLATE_FAST_MIN_HAVE && - left >= INFLATE_FAST_MIN_LEFT) { - RESTORE(); - if (state->whave < state->wsize) - state->whave = state->wsize - left; - inflate_fast(strm, state->wsize); - LOAD(); - break; - } - - /* get a literal, length, or end-of-block code */ - for (;;) { - here = state->lencode[BITS(state->lenbits)]; - if (here.bits <= bits) - break; - PULLBYTE(); - } - if (here.op && (here.op & 0xf0) == 0) { - last = here; - for (;;) { - here = state->lencode[last.val + - (BITS(last.bits + last.op) >> last.bits)]; - if ((unsigned)last.bits + (unsigned)here.bits <= bits) - break; - PULLBYTE(); - } - DROPBITS(last.bits); - } - DROPBITS(here.bits); - state->length = here.val; - - /* process literal */ - if (here.op == 0) { - Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ? - "inflate: literal '%c'\n" : - "inflate: literal 0x%02x\n", here.val)); - ROOM(); - *put++ = (unsigned char)(state->length); - left--; - state->mode = LEN; - break; - } - - /* process end of block */ - if (here.op & 32) { - Tracevv((stderr, "inflate: end of block\n")); - state->mode = TYPE; - break; - } - - /* invalid code */ - if (here.op & 64) { - strm->msg = (char *)"invalid literal/length code"; - state->mode = BAD; - break; - } - - /* length code -- get extra bits, if any */ - state->extra = (here.op & 15); - if (state->extra != 0) { - NEEDBITS(state->extra); - state->length += BITS(state->extra); - DROPBITS(state->extra); - } - Tracevv((stderr, "inflate: length %u\n", state->length)); - - /* get distance code */ - for (;;) { - here = state->distcode[BITS(state->distbits)]; - if (here.bits <= bits) - break; - PULLBYTE(); - } - if ((here.op & 0xf0) == 0) { - last = here; - for (;;) { - here = state->distcode[last.val + (BITS(last.bits + last.op) >> last.bits)]; - if ((unsigned)last.bits + (unsigned)here.bits <= bits) - break; - PULLBYTE(); - } - DROPBITS(last.bits); - } - DROPBITS(here.bits); - if (here.op & 64) { - strm->msg = (char *)"invalid distance code"; - state->mode = BAD; - break; - } - state->offset = here.val; - - /* get distance extra bits, if any */ - state->extra = (here.op & 15); - if (state->extra != 0) { - NEEDBITS(state->extra); - state->offset += BITS(state->extra); - DROPBITS(state->extra); - } - if (state->offset > state->wsize - (state->whave < state->wsize ? left : 0)) { - strm->msg = (char *)"invalid distance too far back"; - state->mode = BAD; - break; - } - Tracevv((stderr, "inflate: distance %u\n", state->offset)); - - /* copy match from window to output */ - do { - ROOM(); - copy = state->wsize - state->offset; - if (copy < left) { - from = put + copy; - copy = left - copy; - } else { - from = put - state->offset; - copy = left; - } - if (copy > state->length) - copy = state->length; - state->length -= copy; - left -= copy; - do { - *put++ = *from++; - } while (--copy); - } while (state->length != 0); - break; - - case DONE: - /* inflate stream terminated properly -- write leftover output */ - ret = Z_STREAM_END; - if (left < state->wsize) { - if (out(out_desc, state->window, state->wsize - left)) - ret = Z_BUF_ERROR; - } - goto inf_leave; - - case BAD: - ret = Z_DATA_ERROR; - goto inf_leave; - - default: /* can't happen, but makes compilers happy */ - ret = Z_STREAM_ERROR; - goto inf_leave; - } - - /* Return unused input */ - inf_leave: - strm->next_in = next; - strm->avail_in = have; - return ret; -} - -int ZEXPORT PREFIX(inflateBackEnd)(PREFIX3(stream) *strm) { - if (strm == NULL || strm->state == NULL || strm->zfree == NULL) - return Z_STREAM_ERROR; - ZFREE(strm, strm->state); - strm->state = NULL; - Tracev((stderr, "inflate: end\n")); - return Z_OK; -} diff --git a/libs/zlibng/inffast.c b/libs/zlibng/inffast.c deleted file mode 100644 index bd9b2a1c4..000000000 --- a/libs/zlibng/inffast.c +++ /dev/null @@ -1,389 +0,0 @@ -/* inffast.c -- fast decoding - * Copyright (C) 1995-2017 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -#include "zbuild.h" -#include "zutil.h" -#include "inftrees.h" -#include "inflate.h" -#include "inffast.h" -#include "memcopy.h" - -/* Return the low n bits of the bit accumulator (n < 16) */ -#define BITS(n) \ - (hold & ((UINT64_C(1) << (n)) - 1)) - -/* Remove n bits from the bit accumulator */ -#define DROPBITS(n) \ - do { \ - hold >>= (n); \ - bits -= (unsigned)(n); \ - } while (0) - -/* - Decode literal, length, and distance codes and write out the resulting - literal and match bytes until either not enough input or output is - available, an end-of-block is encountered, or a data error is encountered. - When large enough input and output buffers are supplied to inflate(), for - example, a 16K input buffer and a 64K output buffer, more than 95% of the - inflate execution time is spent in this routine. - - Entry assumptions: - - state->mode == LEN - strm->avail_in >= INFLATE_FAST_MIN_HAVE - strm->avail_out >= INFLATE_FAST_MIN_LEFT - start >= strm->avail_out - state->bits < 8 - - On return, state->mode is one of: - - LEN -- ran out of enough output space or enough available input - TYPE -- reached end of block code, inflate() to interpret next block - BAD -- error in block data - - Notes: - - - The maximum input bits used by a length/distance pair is 15 bits for the - length code, 5 bits for the length extra, 15 bits for the distance code, - and 13 bits for the distance extra. This totals 48 bits, or six bytes. - Therefore if strm->avail_in >= 6, then there is enough input to avoid - checking for available input while decoding. - - - On some architectures, it can be significantly faster (e.g. up to 1.2x - faster on x86_64) to load from strm->next_in 64 bits, or 8 bytes, at a - time, so INFLATE_FAST_MIN_HAVE == 8. - - - The maximum bytes that a single length/distance pair can output is 258 - bytes, which is the maximum length that can be coded. inflate_fast() - requires strm->avail_out >= 258 for each loop to avoid checking for - output space. - */ -void ZLIB_INTERNAL inflate_fast(PREFIX3(stream) *strm, unsigned long start) { - /* start: inflate()'s starting value for strm->avail_out */ - struct inflate_state *state; - const unsigned char *in; /* local strm->next_in */ - const unsigned char *last; /* have enough input while in < last */ - unsigned char *out; /* local strm->next_out */ - unsigned char *beg; /* inflate()'s initial strm->next_out */ - unsigned char *end; /* while out < end, enough space available */ -#ifdef INFFAST_CHUNKSIZE - unsigned char *safe; /* can use chunkcopy provided out < safe */ -#endif -#ifdef INFLATE_STRICT - unsigned dmax; /* maximum distance from zlib header */ -#endif - unsigned wsize; /* window size or zero if not using window */ - unsigned whave; /* valid bytes in the window */ - unsigned wnext; /* window write index */ - unsigned char *window; /* allocated sliding window, if wsize != 0 */ - - /* hold is a local copy of strm->hold. By default, hold satisfies the same - invariants that strm->hold does, namely that (hold >> bits) == 0. This - invariant is kept by loading bits into hold one byte at a time, like: - - hold |= next_byte_of_input << bits; in++; bits += 8; - - If we need to ensure that bits >= 15 then this code snippet is simply - repeated. Over one iteration of the outermost do/while loop, this - happens up to six times (48 bits of input), as described in the NOTES - above. - - However, on some little endian architectures, it can be significantly - faster to load 64 bits once instead of 8 bits six times: - - if (bits <= 16) { - hold |= next_8_bytes_of_input << bits; in += 6; bits += 48; - } - - Unlike the simpler one byte load, shifting the next_8_bytes_of_input - by bits will overflow and lose those high bits, up to 2 bytes' worth. - The conservative estimate is therefore that we have read only 6 bytes - (48 bits). Again, as per the NOTES above, 48 bits is sufficient for the - rest of the iteration, and we will not need to load another 8 bytes. - - Inside this function, we no longer satisfy (hold >> bits) == 0, but - this is not problematic, even if that overflow does not land on an 8 bit - byte boundary. Those excess bits will eventually shift down lower as the - Huffman decoder consumes input, and when new input bits need to be loaded - into the bits variable, the same input bits will be or'ed over those - existing bits. A bitwise or is idempotent: (a | b | b) equals (a | b). - Note that we therefore write that load operation as "hold |= etc" and not - "hold += etc". - - Outside that loop, at the end of the function, hold is bitwise and'ed - with (1<hold >> state->bits) == 0. - */ - uint64_t hold; /* local strm->hold */ - unsigned bits; /* local strm->bits */ - code const *lcode; /* local strm->lencode */ - code const *dcode; /* local strm->distcode */ - unsigned lmask; /* mask for first level of length codes */ - unsigned dmask; /* mask for first level of distance codes */ - const code *here; /* retrieved table entry */ - unsigned op; /* code bits, operation, extra bits, or */ - /* window position, window bytes to copy */ - unsigned len; /* match length, unused bytes */ - unsigned dist; /* match distance */ - unsigned char *from; /* where to copy match from */ - - /* copy state to local variables */ - state = (struct inflate_state *)strm->state; - in = strm->next_in; - last = in + (strm->avail_in - (INFLATE_FAST_MIN_HAVE - 1)); - out = strm->next_out; - beg = out - (start - strm->avail_out); - end = out + (strm->avail_out - (INFLATE_FAST_MIN_LEFT - 1)); - -#ifdef INFFAST_CHUNKSIZE - safe = out + strm->avail_out; -#endif -#ifdef INFLATE_STRICT - dmax = state->dmax; -#endif - wsize = state->wsize; - whave = state->whave; - wnext = state->wnext; - window = state->window; - hold = state->hold; - bits = state->bits; - lcode = state->lencode; - dcode = state->distcode; - lmask = (1U << state->lenbits) - 1; - dmask = (1U << state->distbits) - 1; - - /* decode literals and length/distances until end-of-block or not enough - input data or output space */ - do { - if (bits < 15) { - hold |= load_64_bits(in, bits); - in += 6; - bits += 48; - } - here = lcode + (hold & lmask); - dolen: - DROPBITS(here->bits); - op = here->op; - if (op == 0) { /* literal */ - Tracevv((stderr, here->val >= 0x20 && here->val < 0x7f ? - "inflate: literal '%c'\n" : - "inflate: literal 0x%02x\n", here->val)); - *out++ = (unsigned char)(here->val); - } else if (op & 16) { /* length base */ - len = here->val; - op &= 15; /* number of extra bits */ - if (op) { - if (bits < op) { - hold |= load_64_bits(in, bits); - in += 6; - bits += 48; - } - len += BITS(op); - DROPBITS(op); - } - Tracevv((stderr, "inflate: length %u\n", len)); - if (bits < 15) { - hold |= load_64_bits(in, bits); - in += 6; - bits += 48; - } - here = dcode + (hold & dmask); - dodist: - DROPBITS(here->bits); - op = here->op; - if (op & 16) { /* distance base */ - dist = here->val; - op &= 15; /* number of extra bits */ - if (bits < op) { - hold |= load_64_bits(in, bits); - in += 6; - bits += 48; - } - dist += BITS(op); -#ifdef INFLATE_STRICT - if (dist > dmax) { - strm->msg = (char *)"invalid distance too far back"; - state->mode = BAD; - break; - } -#endif - DROPBITS(op); - Tracevv((stderr, "inflate: distance %u\n", dist)); - op = (unsigned)(out - beg); /* max distance in output */ - if (dist > op) { /* see if copy from window */ - op = dist - op; /* distance back in window */ - if (op > whave) { - if (state->sane) { - strm->msg = (char *)"invalid distance too far back"; - state->mode = BAD; - break; - } -#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR - if (len <= op - whave) { - do { - *out++ = 0; - } while (--len); - continue; - } - len -= op - whave; - do { - *out++ = 0; - } while (--op > whave); - if (op == 0) { - from = out - dist; - do { - *out++ = *from++; - } while (--len); - continue; - } -#endif - } -#ifdef INFFAST_CHUNKSIZE - from = window; - if (wnext == 0) { /* very common case */ - from += wsize - op; - } else if (wnext >= op) { /* contiguous in window */ - from += wnext - op; - } else { /* wrap around window */ - op -= wnext; - from += wsize - op; - if (op < len) { /* some from end of window */ - len -= op; - out = chunkcopysafe(out, from, op, safe); - from = window; /* more from start of window */ - op = wnext; - /* This (rare) case can create a situation where - the first chunkcopy below must be checked. - */ - } - } - if (op < len) { /* still need some from output */ - len -= op; - out = chunkcopysafe(out, from, op, safe); - out = chunkunroll(out, &dist, &len); - out = chunkcopysafe(out, out - dist, len, safe); - } else { - out = chunkcopysafe(out, from, len, safe); - } -#else - from = window; - if (wnext == 0) { /* very common case */ - from += wsize - op; - if (op < len) { /* some from window */ - len -= op; - do { - *out++ = *from++; - } while (--op); - from = out - dist; /* rest from output */ - } - } else if (wnext < op) { /* wrap around window */ - from += wsize + wnext - op; - op -= wnext; - if (op < len) { /* some from end of window */ - len -= op; - do { - *out++ = *from++; - } while (--op); - from = window; - if (wnext < len) { /* some from start of window */ - op = wnext; - len -= op; - do { - *out++ = *from++; - } while (--op); - from = out - dist; /* rest from output */ - } - } - } else { /* contiguous in window */ - from += wnext - op; - if (op < len) { /* some from window */ - len -= op; - do { - *out++ = *from++; - } while (--op); - from = out - dist; /* rest from output */ - } - } - - out = chunk_copy(out, from, (int) (out - from), len); -#endif - } else { -#ifdef INFFAST_CHUNKSIZE - /* Whole reference is in range of current output. No - range checks are necessary because we start with room - for at least 258 bytes of output, so unroll and roundoff - operations can write beyond `out+len` so long as they - stay within 258 bytes of `out`. - */ - if (dist >= len || dist >= INFFAST_CHUNKSIZE) - out = chunkcopy(out, out - dist, len); - else - out = chunkmemset(out, dist, len); -#else - if (len < sizeof(uint64_t)) - out = set_bytes(out, out - dist, dist, len); - else if (dist == 1) - out = byte_memset(out, len); - else - out = chunk_memset(out, out - dist, dist, len); -#endif - } - } else if ((op & 64) == 0) { /* 2nd level distance code */ - here = dcode + here->val + BITS(op); - goto dodist; - } else { - strm->msg = (char *)"invalid distance code"; - state->mode = BAD; - break; - } - } else if ((op & 64) == 0) { /* 2nd level length code */ - here = lcode + here->val + BITS(op); - goto dolen; - } else if (op & 32) { /* end-of-block */ - Tracevv((stderr, "inflate: end of block\n")); - state->mode = TYPE; - break; - } else { - strm->msg = (char *)"invalid literal/length code"; - state->mode = BAD; - break; - } - } while (in < last && out < end); - - /* return unused bytes (on entry, bits < 8, so in won't go too far back) */ - len = bits >> 3; - in -= len; - bits -= len << 3; - hold &= (UINT64_C(1) << bits) - 1; - - /* update state and return */ - strm->next_in = in; - strm->next_out = out; - strm->avail_in = - (unsigned)(in < last ? (INFLATE_FAST_MIN_HAVE - 1) + (last - in) - : (INFLATE_FAST_MIN_HAVE - 1) - (in - last)); - strm->avail_out = - (unsigned)(out < end ? (INFLATE_FAST_MIN_LEFT - 1) + (end - out) - : (INFLATE_FAST_MIN_LEFT - 1) - (out - end)); - - Assert(bits <= 32, "Remaining bits greater than 32"); - state->hold = (uint32_t)hold; - state->bits = bits; - return; -} - -/* - inflate_fast() speedups that turned out slower (on a PowerPC G3 750CXe): - - Using bit fields for code structure - - Different op definition to avoid & for extra bits (do & for table bits) - - Three separate decoding do-loops for direct, window, and wnext == 0 - - Special case for distance > 1 copies to do overlapped load and store copy - - Explicit branch predictions (based on measured branch probabilities) - - Deferring match copy and interspersed it with decoding subsequent codes - - Swapping literal/length else - - Swapping window/direct else - - Larger unrolled copy loops (three is about right) - - Moving len -= 3 statement into middle of loop - */ diff --git a/libs/zlibng/inffast.h b/libs/zlibng/inffast.h deleted file mode 100644 index 9ad21abc8..000000000 --- a/libs/zlibng/inffast.h +++ /dev/null @@ -1,18 +0,0 @@ -#ifndef INFFAST_H_ -#define INFFAST_H_ -/* inffast.h -- header to use inffast.c - * Copyright (C) 1995-2003, 2010 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* WARNING: this file should *not* be used by applications. It is - part of the implementation of the compression library and is - subject to change. Applications should only use zlib.h. - */ - -void ZLIB_INTERNAL inflate_fast(PREFIX3(stream) *strm, unsigned long start); - -#define INFLATE_FAST_MIN_HAVE 8 -#define INFLATE_FAST_MIN_LEFT 258 - -#endif /* INFFAST_H_ */ diff --git a/libs/zlibng/inffixed.h b/libs/zlibng/inffixed.h deleted file mode 100644 index d62832776..000000000 --- a/libs/zlibng/inffixed.h +++ /dev/null @@ -1,94 +0,0 @@ - /* inffixed.h -- table for decoding fixed codes - * Generated automatically by makefixed(). - */ - - /* WARNING: this file should *not* be used by applications. - It is part of the implementation of this library and is - subject to change. Applications should only use zlib.h. - */ - - static const code lenfix[512] = { - {96,7,0},{0,8,80},{0,8,16},{20,8,115},{18,7,31},{0,8,112},{0,8,48}, - {0,9,192},{16,7,10},{0,8,96},{0,8,32},{0,9,160},{0,8,0},{0,8,128}, - {0,8,64},{0,9,224},{16,7,6},{0,8,88},{0,8,24},{0,9,144},{19,7,59}, - {0,8,120},{0,8,56},{0,9,208},{17,7,17},{0,8,104},{0,8,40},{0,9,176}, - {0,8,8},{0,8,136},{0,8,72},{0,9,240},{16,7,4},{0,8,84},{0,8,20}, - {21,8,227},{19,7,43},{0,8,116},{0,8,52},{0,9,200},{17,7,13},{0,8,100}, - {0,8,36},{0,9,168},{0,8,4},{0,8,132},{0,8,68},{0,9,232},{16,7,8}, - {0,8,92},{0,8,28},{0,9,152},{20,7,83},{0,8,124},{0,8,60},{0,9,216}, - {18,7,23},{0,8,108},{0,8,44},{0,9,184},{0,8,12},{0,8,140},{0,8,76}, - {0,9,248},{16,7,3},{0,8,82},{0,8,18},{21,8,163},{19,7,35},{0,8,114}, - {0,8,50},{0,9,196},{17,7,11},{0,8,98},{0,8,34},{0,9,164},{0,8,2}, - {0,8,130},{0,8,66},{0,9,228},{16,7,7},{0,8,90},{0,8,26},{0,9,148}, - {20,7,67},{0,8,122},{0,8,58},{0,9,212},{18,7,19},{0,8,106},{0,8,42}, - {0,9,180},{0,8,10},{0,8,138},{0,8,74},{0,9,244},{16,7,5},{0,8,86}, - {0,8,22},{64,8,0},{19,7,51},{0,8,118},{0,8,54},{0,9,204},{17,7,15}, - {0,8,102},{0,8,38},{0,9,172},{0,8,6},{0,8,134},{0,8,70},{0,9,236}, - {16,7,9},{0,8,94},{0,8,30},{0,9,156},{20,7,99},{0,8,126},{0,8,62}, - {0,9,220},{18,7,27},{0,8,110},{0,8,46},{0,9,188},{0,8,14},{0,8,142}, - {0,8,78},{0,9,252},{96,7,0},{0,8,81},{0,8,17},{21,8,131},{18,7,31}, - {0,8,113},{0,8,49},{0,9,194},{16,7,10},{0,8,97},{0,8,33},{0,9,162}, - {0,8,1},{0,8,129},{0,8,65},{0,9,226},{16,7,6},{0,8,89},{0,8,25}, - {0,9,146},{19,7,59},{0,8,121},{0,8,57},{0,9,210},{17,7,17},{0,8,105}, - {0,8,41},{0,9,178},{0,8,9},{0,8,137},{0,8,73},{0,9,242},{16,7,4}, - {0,8,85},{0,8,21},{16,8,258},{19,7,43},{0,8,117},{0,8,53},{0,9,202}, - {17,7,13},{0,8,101},{0,8,37},{0,9,170},{0,8,5},{0,8,133},{0,8,69}, - {0,9,234},{16,7,8},{0,8,93},{0,8,29},{0,9,154},{20,7,83},{0,8,125}, - {0,8,61},{0,9,218},{18,7,23},{0,8,109},{0,8,45},{0,9,186},{0,8,13}, - {0,8,141},{0,8,77},{0,9,250},{16,7,3},{0,8,83},{0,8,19},{21,8,195}, - {19,7,35},{0,8,115},{0,8,51},{0,9,198},{17,7,11},{0,8,99},{0,8,35}, - {0,9,166},{0,8,3},{0,8,131},{0,8,67},{0,9,230},{16,7,7},{0,8,91}, - {0,8,27},{0,9,150},{20,7,67},{0,8,123},{0,8,59},{0,9,214},{18,7,19}, - {0,8,107},{0,8,43},{0,9,182},{0,8,11},{0,8,139},{0,8,75},{0,9,246}, - {16,7,5},{0,8,87},{0,8,23},{64,8,0},{19,7,51},{0,8,119},{0,8,55}, - {0,9,206},{17,7,15},{0,8,103},{0,8,39},{0,9,174},{0,8,7},{0,8,135}, - {0,8,71},{0,9,238},{16,7,9},{0,8,95},{0,8,31},{0,9,158},{20,7,99}, - {0,8,127},{0,8,63},{0,9,222},{18,7,27},{0,8,111},{0,8,47},{0,9,190}, - {0,8,15},{0,8,143},{0,8,79},{0,9,254},{96,7,0},{0,8,80},{0,8,16}, - {20,8,115},{18,7,31},{0,8,112},{0,8,48},{0,9,193},{16,7,10},{0,8,96}, - {0,8,32},{0,9,161},{0,8,0},{0,8,128},{0,8,64},{0,9,225},{16,7,6}, - {0,8,88},{0,8,24},{0,9,145},{19,7,59},{0,8,120},{0,8,56},{0,9,209}, - {17,7,17},{0,8,104},{0,8,40},{0,9,177},{0,8,8},{0,8,136},{0,8,72}, - {0,9,241},{16,7,4},{0,8,84},{0,8,20},{21,8,227},{19,7,43},{0,8,116}, - {0,8,52},{0,9,201},{17,7,13},{0,8,100},{0,8,36},{0,9,169},{0,8,4}, - {0,8,132},{0,8,68},{0,9,233},{16,7,8},{0,8,92},{0,8,28},{0,9,153}, - {20,7,83},{0,8,124},{0,8,60},{0,9,217},{18,7,23},{0,8,108},{0,8,44}, - {0,9,185},{0,8,12},{0,8,140},{0,8,76},{0,9,249},{16,7,3},{0,8,82}, - {0,8,18},{21,8,163},{19,7,35},{0,8,114},{0,8,50},{0,9,197},{17,7,11}, - {0,8,98},{0,8,34},{0,9,165},{0,8,2},{0,8,130},{0,8,66},{0,9,229}, - {16,7,7},{0,8,90},{0,8,26},{0,9,149},{20,7,67},{0,8,122},{0,8,58}, - {0,9,213},{18,7,19},{0,8,106},{0,8,42},{0,9,181},{0,8,10},{0,8,138}, - {0,8,74},{0,9,245},{16,7,5},{0,8,86},{0,8,22},{64,8,0},{19,7,51}, - {0,8,118},{0,8,54},{0,9,205},{17,7,15},{0,8,102},{0,8,38},{0,9,173}, - {0,8,6},{0,8,134},{0,8,70},{0,9,237},{16,7,9},{0,8,94},{0,8,30}, - {0,9,157},{20,7,99},{0,8,126},{0,8,62},{0,9,221},{18,7,27},{0,8,110}, - {0,8,46},{0,9,189},{0,8,14},{0,8,142},{0,8,78},{0,9,253},{96,7,0}, - {0,8,81},{0,8,17},{21,8,131},{18,7,31},{0,8,113},{0,8,49},{0,9,195}, - {16,7,10},{0,8,97},{0,8,33},{0,9,163},{0,8,1},{0,8,129},{0,8,65}, - {0,9,227},{16,7,6},{0,8,89},{0,8,25},{0,9,147},{19,7,59},{0,8,121}, - {0,8,57},{0,9,211},{17,7,17},{0,8,105},{0,8,41},{0,9,179},{0,8,9}, - {0,8,137},{0,8,73},{0,9,243},{16,7,4},{0,8,85},{0,8,21},{16,8,258}, - {19,7,43},{0,8,117},{0,8,53},{0,9,203},{17,7,13},{0,8,101},{0,8,37}, - {0,9,171},{0,8,5},{0,8,133},{0,8,69},{0,9,235},{16,7,8},{0,8,93}, - {0,8,29},{0,9,155},{20,7,83},{0,8,125},{0,8,61},{0,9,219},{18,7,23}, - {0,8,109},{0,8,45},{0,9,187},{0,8,13},{0,8,141},{0,8,77},{0,9,251}, - {16,7,3},{0,8,83},{0,8,19},{21,8,195},{19,7,35},{0,8,115},{0,8,51}, - {0,9,199},{17,7,11},{0,8,99},{0,8,35},{0,9,167},{0,8,3},{0,8,131}, - {0,8,67},{0,9,231},{16,7,7},{0,8,91},{0,8,27},{0,9,151},{20,7,67}, - {0,8,123},{0,8,59},{0,9,215},{18,7,19},{0,8,107},{0,8,43},{0,9,183}, - {0,8,11},{0,8,139},{0,8,75},{0,9,247},{16,7,5},{0,8,87},{0,8,23}, - {64,8,0},{19,7,51},{0,8,119},{0,8,55},{0,9,207},{17,7,15},{0,8,103}, - {0,8,39},{0,9,175},{0,8,7},{0,8,135},{0,8,71},{0,9,239},{16,7,9}, - {0,8,95},{0,8,31},{0,9,159},{20,7,99},{0,8,127},{0,8,63},{0,9,223}, - {18,7,27},{0,8,111},{0,8,47},{0,9,191},{0,8,15},{0,8,143},{0,8,79}, - {0,9,255} - }; - - static const code distfix[32] = { - {16,5,1},{23,5,257},{19,5,17},{27,5,4097},{17,5,5},{25,5,1025}, - {21,5,65},{29,5,16385},{16,5,3},{24,5,513},{20,5,33},{28,5,8193}, - {18,5,9},{26,5,2049},{22,5,129},{64,5,0},{16,5,2},{23,5,385}, - {19,5,25},{27,5,6145},{17,5,7},{25,5,1537},{21,5,97},{29,5,24577}, - {16,5,4},{24,5,769},{20,5,49},{28,5,12289},{18,5,13},{26,5,3073}, - {22,5,193},{64,5,0} - }; diff --git a/libs/zlibng/inflate.c b/libs/zlibng/inflate.c deleted file mode 100644 index 8a8d328f9..000000000 --- a/libs/zlibng/inflate.c +++ /dev/null @@ -1,1577 +0,0 @@ -/* inflate.c -- zlib decompression - * Copyright (C) 1995-2016 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* - * Change history: - * - * 1.2.beta0 24 Nov 2002 - * - First version -- complete rewrite of inflate to simplify code, avoid - * creation of window when not needed, minimize use of window when it is - * needed, make inffast.c even faster, implement gzip decoding, and to - * improve code readability and style over the previous zlib inflate code - * - * 1.2.beta1 25 Nov 2002 - * - Use pointers for available input and output checking in inffast.c - * - Remove input and output counters in inffast.c - * - Change inffast.c entry and loop from avail_in >= 7 to >= 6 - * - Remove unnecessary second byte pull from length extra in inffast.c - * - Unroll direct copy to three copies per loop in inffast.c - * - * 1.2.beta2 4 Dec 2002 - * - Change external routine names to reduce potential conflicts - * - Correct filename to inffixed.h for fixed tables in inflate.c - * - Make hbuf[] unsigned char to match parameter type in inflate.c - * - Change strm->next_out[-state->offset] to *(strm->next_out - state->offset) - * to avoid negation problem on Alphas (64 bit) in inflate.c - * - * 1.2.beta3 22 Dec 2002 - * - Add comments on state->bits assertion in inffast.c - * - Add comments on op field in inftrees.h - * - Fix bug in reuse of allocated window after inflateReset() - * - Remove bit fields--back to byte structure for speed - * - Remove distance extra == 0 check in inflate_fast()--only helps for lengths - * - Change post-increments to pre-increments in inflate_fast(), PPC biased? - * - Add compile time option, POSTINC, to use post-increments instead (Intel?) - * - Make MATCH copy in inflate() much faster for when inflate_fast() not used - * - Use local copies of stream next and avail values, as well as local bit - * buffer and bit count in inflate()--for speed when inflate_fast() not used - * - * 1.2.beta4 1 Jan 2003 - * - Split ptr - 257 statements in inflate_table() to avoid compiler warnings - * - Move a comment on output buffer sizes from inffast.c to inflate.c - * - Add comments in inffast.c to introduce the inflate_fast() routine - * - Rearrange window copies in inflate_fast() for speed and simplification - * - Unroll last copy for window match in inflate_fast() - * - Use local copies of window variables in inflate_fast() for speed - * - Pull out common wnext == 0 case for speed in inflate_fast() - * - Make op and len in inflate_fast() unsigned for consistency - * - Add FAR to lcode and dcode declarations in inflate_fast() - * - Simplified bad distance check in inflate_fast() - * - Added inflateBackInit(), inflateBack(), and inflateBackEnd() in new - * source file infback.c to provide a call-back interface to inflate for - * programs like gzip and unzip -- uses window as output buffer to avoid - * window copying - * - * 1.2.beta5 1 Jan 2003 - * - Improved inflateBack() interface to allow the caller to provide initial - * input in strm. - * - Fixed stored blocks bug in inflateBack() - * - * 1.2.beta6 4 Jan 2003 - * - Added comments in inffast.c on effectiveness of POSTINC - * - Typecasting all around to reduce compiler warnings - * - Changed loops from while (1) or do {} while (1) to for (;;), again to - * make compilers happy - * - Changed type of window in inflateBackInit() to unsigned char * - * - * 1.2.beta7 27 Jan 2003 - * - Changed many types to unsigned or unsigned short to avoid warnings - * - Added inflateCopy() function - * - * 1.2.0 9 Mar 2003 - * - Changed inflateBack() interface to provide separate opaque descriptors - * for the in() and out() functions - * - Changed inflateBack() argument and in_func typedef to swap the length - * and buffer address return values for the input function - * - Check next_in and next_out for Z_NULL on entry to inflate() - * - * The history for versions after 1.2.0 are in ChangeLog in zlib distribution. - */ - -#include "zbuild.h" -#include "zutil.h" -#include "inftrees.h" -#include "inflate.h" -#include "inffast.h" -#include "memcopy.h" -#include "functable.h" - -/* Architecture-specific hooks. */ -#ifdef S390_DFLTCC_INFLATE -# include "arch/s390/dfltcc_inflate.h" -#else -/* Memory management for the inflate state. Useful for allocating arch-specific extension blocks. */ -# define ZALLOC_STATE(strm, items, size) ZALLOC(strm, items, size) -# define ZFREE_STATE(strm, addr) ZFREE(strm, addr) -# define ZCOPY_STATE(dst, src, size) memcpy(dst, src, size) -/* Memory management for the window. Useful for allocation the aligned window. */ -# define ZALLOC_WINDOW(strm, items, size) ZALLOC(strm, items, size) -# define ZFREE_WINDOW(strm, addr) ZFREE(strm, addr) -/* Invoked at the end of inflateResetKeep(). Useful for initializing arch-specific extension blocks. */ -# define INFLATE_RESET_KEEP_HOOK(strm) do {} while (0) -/* Invoked at the beginning of inflatePrime(). Useful for updating arch-specific buffers. */ -# define INFLATE_PRIME_HOOK(strm, bits, value) do {} while (0) -/* Invoked at the beginning of each block. Useful for plugging arch-specific inflation code. */ -# define INFLATE_TYPEDO_HOOK(strm, flush) do {} while (0) -/* Returns whether zlib-ng should compute a checksum. Set to 0 if arch-specific inflation code already does that. */ -# define INFLATE_NEED_CHECKSUM(strm) 1 -/* Returns whether zlib-ng should update a window. Set to 0 if arch-specific inflation code already does that. */ -# define INFLATE_NEED_UPDATEWINDOW(strm) 1 -/* Invoked at the beginning of inflateMark(). Useful for updating arch-specific pointers and offsets. */ -# define INFLATE_MARK_HOOK(strm) do {} while (0) -#endif - -#ifdef MAKEFIXED -# ifndef BUILDFIXED -# define BUILDFIXED -# endif -#endif - -/* function prototypes */ -static int inflateStateCheck(PREFIX3(stream) *strm); -static void fixedtables(struct inflate_state *state); -static int updatewindow(PREFIX3(stream) *strm, const unsigned char *end, uint32_t copy); -#ifdef BUILDFIXED - void makefixed(void); -#endif -static uint32_t syncsearch(uint32_t *have, const unsigned char *buf, uint32_t len); - -static int inflateStateCheck(PREFIX3(stream) *strm) { - struct inflate_state *state; - if (strm == NULL || strm->zalloc == NULL || strm->zfree == NULL) - return 1; - state = (struct inflate_state *)strm->state; - if (state == NULL || state->strm != strm || state->mode < HEAD || state->mode > SYNC) - return 1; - return 0; -} - -int ZEXPORT PREFIX(inflateResetKeep)(PREFIX3(stream) *strm) { - struct inflate_state *state; - - if (inflateStateCheck(strm)) - return Z_STREAM_ERROR; - state = (struct inflate_state *)strm->state; - strm->total_in = strm->total_out = state->total = 0; - strm->msg = NULL; - if (state->wrap) /* to support ill-conceived Java test suite */ - strm->adler = state->wrap & 1; - state->mode = HEAD; - state->check = functable.adler32(0L, NULL, 0); - state->last = 0; - state->havedict = 0; - state->dmax = 32768U; - state->head = NULL; - state->hold = 0; - state->bits = 0; - state->lencode = state->distcode = state->next = state->codes; - state->sane = 1; - state->back = -1; - INFLATE_RESET_KEEP_HOOK(strm); /* hook for IBM Z DFLTCC */ - Tracev((stderr, "inflate: reset\n")); - return Z_OK; -} - -int ZEXPORT PREFIX(inflateReset)(PREFIX3(stream) *strm) { - struct inflate_state *state; - - if (inflateStateCheck(strm)) - return Z_STREAM_ERROR; - state = (struct inflate_state *)strm->state; - state->wsize = 0; - state->whave = 0; - state->wnext = 0; - return PREFIX(inflateResetKeep)(strm); -} - -int ZEXPORT PREFIX(inflateReset2)(PREFIX3(stream) *strm, int windowBits) { - int wrap; - struct inflate_state *state; - - /* get the state */ - if (inflateStateCheck(strm)) - return Z_STREAM_ERROR; - state = (struct inflate_state *)strm->state; - - /* extract wrap request from windowBits parameter */ - if (windowBits < 0) { - wrap = 0; - windowBits = -windowBits; - } else { - wrap = (windowBits >> 4) + 5; -#ifdef GUNZIP - if (windowBits < 48) - windowBits &= 15; -#endif - } - - /* set number of window bits, free window if different */ - if (windowBits && (windowBits < 8 || windowBits > 15)) - return Z_STREAM_ERROR; - if (state->window != NULL && state->wbits != (unsigned)windowBits) { - ZFREE_WINDOW(strm, state->window); - state->window = NULL; - } - - /* update state and reset the rest of it */ - state->wrap = wrap; - state->wbits = (unsigned)windowBits; - return PREFIX(inflateReset)(strm); -} - -int ZEXPORT PREFIX(inflateInit2_)(PREFIX3(stream) *strm, int windowBits, const char *version, int stream_size) { - int ret; - struct inflate_state *state; - -#ifdef X86_CPUID - x86_check_features(); -#elif defined(__arm__) || defined(__aarch64__) || defined(_M_ARM) - arm_check_features(); -#endif - - if (version == NULL || version[0] != PREFIX2(VERSION)[0] || stream_size != (int)(sizeof(PREFIX3(stream)))) - return Z_VERSION_ERROR; - if (strm == NULL) - return Z_STREAM_ERROR; - strm->msg = NULL; /* in case we return an error */ - if (strm->zalloc == NULL) { - strm->zalloc = zcalloc; - strm->opaque = NULL; - } - if (strm->zfree == NULL) - strm->zfree = zcfree; - state = (struct inflate_state *) ZALLOC_STATE(strm, 1, sizeof(struct inflate_state)); - if (state == NULL) - return Z_MEM_ERROR; - Tracev((stderr, "inflate: allocated\n")); - strm->state = (struct internal_state *)state; - state->strm = strm; - state->window = NULL; - state->mode = HEAD; /* to pass state test in inflateReset2() */ - ret = PREFIX(inflateReset2)(strm, windowBits); - if (ret != Z_OK) { - ZFREE_STATE(strm, state); - strm->state = NULL; - } - return ret; -} - -int ZEXPORT PREFIX(inflateInit_)(PREFIX3(stream) *strm, const char *version, int stream_size) { - return PREFIX(inflateInit2_)(strm, DEF_WBITS, version, stream_size); -} - -int ZEXPORT PREFIX(inflatePrime)(PREFIX3(stream) *strm, int bits, int value) { - struct inflate_state *state; - - if (inflateStateCheck(strm)) - return Z_STREAM_ERROR; - INFLATE_PRIME_HOOK(strm, bits, value); /* hook for IBM Z DFLTCC */ - state = (struct inflate_state *)strm->state; - if (bits < 0) { - state->hold = 0; - state->bits = 0; - return Z_OK; - } - if (bits > 16 || state->bits + (unsigned int)bits > 32) - return Z_STREAM_ERROR; - value &= (1L << bits) - 1; - state->hold += (unsigned)value << state->bits; - state->bits += (unsigned int)bits; - return Z_OK; -} - -/* - Return state with length and distance decoding tables and index sizes set to - fixed code decoding. Normally this returns fixed tables from inffixed.h. - If BUILDFIXED is defined, then instead this routine builds the tables the - first time it's called, and returns those tables the first time and - thereafter. This reduces the size of the code by about 2K bytes, in - exchange for a little execution time. However, BUILDFIXED should not be - used for threaded applications, since the rewriting of the tables and virgin - may not be thread-safe. - */ -static void fixedtables(struct inflate_state *state) { -#ifdef BUILDFIXED - static int virgin = 1; - static code *lenfix, *distfix; - static code fixed[544]; - - /* build fixed huffman tables if first call (may not be thread safe) */ - if (virgin) { - unsigned sym, bits; - static code *next; - - /* literal/length table */ - sym = 0; - while (sym < 144) state->lens[sym++] = 8; - while (sym < 256) state->lens[sym++] = 9; - while (sym < 280) state->lens[sym++] = 7; - while (sym < 288) state->lens[sym++] = 8; - next = fixed; - lenfix = next; - bits = 9; - inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work); - - /* distance table */ - sym = 0; - while (sym < 32) state->lens[sym++] = 5; - distfix = next; - bits = 5; - inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work); - - /* do this just once */ - virgin = 0; - } -#else /* !BUILDFIXED */ -# include "inffixed.h" -#endif /* BUILDFIXED */ - state->lencode = lenfix; - state->lenbits = 9; - state->distcode = distfix; - state->distbits = 5; -} - -#ifdef MAKEFIXED -#include - -/* - Write out the inffixed.h that is #include'd above. Defining MAKEFIXED also - defines BUILDFIXED, so the tables are built on the fly. makefixed() writes - those tables to stdout, which would be piped to inffixed.h. A small program - can simply call makefixed to do this: - - void makefixed(void); - - int main(void) - { - makefixed(); - return 0; - } - - Then that can be linked with zlib built with MAKEFIXED defined and run: - - a.out > inffixed.h - */ -void makefixed(void) { - unsigned low, size; - struct inflate_state state; - - fixedtables(&state); - puts(" /* inffixed.h -- table for decoding fixed codes"); - puts(" * Generated automatically by makefixed()."); - puts(" */"); - puts(""); - puts(" /* WARNING: this file should *not* be used by applications."); - puts(" It is part of the implementation of this library and is"); - puts(" subject to change. Applications should only use zlib.h."); - puts(" */"); - puts(""); - size = 1U << 9; - printf(" static const code lenfix[%u] = {", size); - low = 0; - for (;;) { - if ((low % 7) == 0) - printf("\n "); - printf("{%u,%u,%d}", (low & 127) == 99 ? 64 : state.lencode[low].op, - state.lencode[low].bits, state.lencode[low].val); - if (++low == size) - break; - putchar(','); - } - puts("\n };"); - size = 1U << 5; - printf("\n static const code distfix[%u] = {", size); - low = 0; - for (;;) { - if ((low % 6) == 0) - printf("\n "); - printf("{%u,%u,%d}", state.distcode[low].op, state.distcode[low].bits, state.distcode[low].val); - if (++low == size) - break; - putchar(','); - } - puts("\n };"); -} -#endif /* MAKEFIXED */ - -int ZLIB_INTERNAL inflate_ensure_window(struct inflate_state *state) -{ - /* if it hasn't been done already, allocate space for the window */ - if (state->window == NULL) { -#ifdef INFFAST_CHUNKSIZE - unsigned wsize = 1U << state->wbits; - state->window = (unsigned char *) ZALLOC_WINDOW(state->strm, wsize + INFFAST_CHUNKSIZE, sizeof(unsigned char)); - if (state->window == Z_NULL) - return 1; - memset(state->window + wsize, 0, INFFAST_CHUNKSIZE); -#else - state->window = (unsigned char *) ZALLOC_WINDOW(state->strm, 1U << state->wbits, sizeof(unsigned char)); - if (state->window == NULL) - return 1; -#endif - } - - /* if window not in use yet, initialize */ - if (state->wsize == 0) { - state->wsize = 1U << state->wbits; - state->wnext = 0; - state->whave = 0; - } - - return 0; -} - -/* - Update the window with the last wsize (normally 32K) bytes written before - returning. If window does not exist yet, create it. This is only called - when a window is already in use, or when output has been written during this - inflate call, but the end of the deflate stream has not been reached yet. - It is also called to create a window for dictionary data when a dictionary - is loaded. - - Providing output buffers larger than 32K to inflate() should provide a speed - advantage, since only the last 32K of output is copied to the sliding window - upon return from inflate(), and since all distances after the first 32K of - output will fall in the output data, making match copies simpler and faster. - The advantage may be dependent on the size of the processor's data caches. - */ -static int updatewindow(PREFIX3(stream) *strm, const unsigned char *end, uint32_t copy) { - struct inflate_state *state; - uint32_t dist; - - state = (struct inflate_state *)strm->state; - - if (inflate_ensure_window(state)) return 1; - - /* copy state->wsize or less output bytes into the circular window */ - if (copy >= state->wsize) { - memcpy(state->window, end - state->wsize, state->wsize); - state->wnext = 0; - state->whave = state->wsize; - } else { - dist = state->wsize - state->wnext; - if (dist > copy) - dist = copy; - memcpy(state->window + state->wnext, end - copy, dist); - copy -= dist; - if (copy) { - memcpy(state->window, end - copy, copy); - state->wnext = copy; - state->whave = state->wsize; - } else { - state->wnext += dist; - if (state->wnext == state->wsize) - state->wnext = 0; - if (state->whave < state->wsize) - state->whave += dist; - } - } - return 0; -} - -/* Macros for inflate(): */ - -/* check function to use adler32() for zlib or crc32() for gzip */ -#ifdef GUNZIP -# define UPDATE(check, buf, len) \ - (state->flags ? PREFIX(crc32)(check, buf, len) : functable.adler32(check, buf, len)) -#else -# define UPDATE(check, buf, len) functable.adler32(check, buf, len) -#endif - -/* check macros for header crc */ -#ifdef GUNZIP -# define CRC2(check, word) \ - do { \ - hbuf[0] = (unsigned char)(word); \ - hbuf[1] = (unsigned char)((word) >> 8); \ - check = PREFIX(crc32)(check, hbuf, 2); \ - } while (0) - -# define CRC4(check, word) \ - do { \ - hbuf[0] = (unsigned char)(word); \ - hbuf[1] = (unsigned char)((word) >> 8); \ - hbuf[2] = (unsigned char)((word) >> 16); \ - hbuf[3] = (unsigned char)((word) >> 24); \ - check = PREFIX(crc32)(check, hbuf, 4); \ - } while (0) -#endif - -/* Load registers with state in inflate() for speed */ -#define LOAD() \ - do { \ - put = strm->next_out; \ - left = strm->avail_out; \ - next = strm->next_in; \ - have = strm->avail_in; \ - hold = state->hold; \ - bits = state->bits; \ - } while (0) - -/* Restore state from registers in inflate() */ -#define RESTORE() \ - do { \ - strm->next_out = put; \ - strm->avail_out = left; \ - strm->next_in = next; \ - strm->avail_in = have; \ - state->hold = hold; \ - state->bits = bits; \ - } while (0) - -/* Clear the input bit accumulator */ -#define INITBITS() \ - do { \ - hold = 0; \ - bits = 0; \ - } while (0) - -/* Get a byte of input into the bit accumulator, or return from inflate() - if there is no input available. */ -#define PULLBYTE() \ - do { \ - if (have == 0) goto inf_leave; \ - have--; \ - hold += ((unsigned)(*next++) << bits); \ - bits += 8; \ - } while (0) - -/* Assure that there are at least n bits in the bit accumulator. If there is - not enough available input to do that, then return from inflate(). */ -#define NEEDBITS(n) \ - do { \ - while (bits < (unsigned)(n)) \ - PULLBYTE(); \ - } while (0) - -/* Return the low n bits of the bit accumulator (n < 16) */ -#define BITS(n) \ - (hold & ((1U << (n)) - 1)) - -/* Remove n bits from the bit accumulator */ -#define DROPBITS(n) \ - do { \ - hold >>= (n); \ - bits -= (unsigned)(n); \ - } while (0) - -/* Remove zero to seven bits as needed to go to a byte boundary */ -#define BYTEBITS() \ - do { \ - hold >>= bits & 7; \ - bits -= bits & 7; \ - } while (0) - -/* - inflate() uses a state machine to process as much input data and generate as - much output data as possible before returning. The state machine is - structured roughly as follows: - - for (;;) switch (state) { - ... - case STATEn: - if (not enough input data or output space to make progress) - return; - ... make progress ... - state = STATEm; - break; - ... - } - - so when inflate() is called again, the same case is attempted again, and - if the appropriate resources are provided, the machine proceeds to the - next state. The NEEDBITS() macro is usually the way the state evaluates - whether it can proceed or should return. NEEDBITS() does the return if - the requested bits are not available. The typical use of the BITS macros - is: - - NEEDBITS(n); - ... do something with BITS(n) ... - DROPBITS(n); - - where NEEDBITS(n) either returns from inflate() if there isn't enough - input left to load n bits into the accumulator, or it continues. BITS(n) - gives the low n bits in the accumulator. When done, DROPBITS(n) drops - the low n bits off the accumulator. INITBITS() clears the accumulator - and sets the number of available bits to zero. BYTEBITS() discards just - enough bits to put the accumulator on a byte boundary. After BYTEBITS() - and a NEEDBITS(8), then BITS(8) would return the next byte in the stream. - - NEEDBITS(n) uses PULLBYTE() to get an available byte of input, or to return - if there is no input available. The decoding of variable length codes uses - PULLBYTE() directly in order to pull just enough bytes to decode the next - code, and no more. - - Some states loop until they get enough input, making sure that enough - state information is maintained to continue the loop where it left off - if NEEDBITS() returns in the loop. For example, want, need, and keep - would all have to actually be part of the saved state in case NEEDBITS() - returns: - - case STATEw: - while (want < need) { - NEEDBITS(n); - keep[want++] = BITS(n); - DROPBITS(n); - } - state = STATEx; - case STATEx: - - As shown above, if the next state is also the next case, then the break - is omitted. - - A state may also return if there is not enough output space available to - complete that state. Those states are copying stored data, writing a - literal byte, and copying a matching string. - - When returning, a "goto inf_leave" is used to update the total counters, - update the check value, and determine whether any progress has been made - during that inflate() call in order to return the proper return code. - Progress is defined as a change in either strm->avail_in or strm->avail_out. - When there is a window, goto inf_leave will update the window with the last - output written. If a goto inf_leave occurs in the middle of decompression - and there is no window currently, goto inf_leave will create one and copy - output to the window for the next call of inflate(). - - In this implementation, the flush parameter of inflate() only affects the - return code (per zlib.h). inflate() always writes as much as possible to - strm->next_out, given the space available and the provided input--the effect - documented in zlib.h of Z_SYNC_FLUSH. Furthermore, inflate() always defers - the allocation of and copying into a sliding window until necessary, which - provides the effect documented in zlib.h for Z_FINISH when the entire input - stream available. So the only thing the flush parameter actually does is: - when flush is set to Z_FINISH, inflate() cannot return Z_OK. Instead it - will return Z_BUF_ERROR if it has not reached the end of the stream. - */ - -int ZEXPORT PREFIX(inflate)(PREFIX3(stream) *strm, int flush) { - struct inflate_state *state; - const unsigned char *next; /* next input */ - unsigned char *put; /* next output */ - unsigned have, left; /* available input and output */ - uint32_t hold; /* bit buffer */ - unsigned bits; /* bits in bit buffer */ - uint32_t in, out; /* save starting available input and output */ - unsigned copy; /* number of stored or match bytes to copy */ - unsigned char *from; /* where to copy match bytes from */ - code here; /* current decoding table entry */ - code last; /* parent table entry */ - unsigned len; /* length to copy for repeats, bits to drop */ - int ret; /* return code */ -#ifdef GUNZIP - unsigned char hbuf[4]; /* buffer for gzip header crc calculation */ -#endif - static const uint16_t order[19] = /* permutation of code lengths */ - {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15}; - - if (inflateStateCheck(strm) || strm->next_out == NULL || - (strm->next_in == NULL && strm->avail_in != 0)) - return Z_STREAM_ERROR; - - state = (struct inflate_state *)strm->state; - if (state->mode == TYPE) /* skip check */ - state->mode = TYPEDO; - LOAD(); - in = have; - out = left; - ret = Z_OK; - for (;;) - switch (state->mode) { - case HEAD: - if (state->wrap == 0) { - state->mode = TYPEDO; - break; - } - NEEDBITS(16); -#ifdef GUNZIP - if ((state->wrap & 2) && hold == 0x8b1f) { /* gzip header */ - if (state->wbits == 0) - state->wbits = 15; - state->check = PREFIX(crc32)(0L, NULL, 0); - CRC2(state->check, hold); - INITBITS(); - state->mode = FLAGS; - break; - } - state->flags = 0; /* expect zlib header */ - if (state->head != NULL) - state->head->done = -1; - if (!(state->wrap & 1) || /* check if zlib header allowed */ -#else - if ( -#endif - ((BITS(8) << 8) + (hold >> 8)) % 31) { - strm->msg = (char *)"incorrect header check"; - state->mode = BAD; - break; - } - if (BITS(4) != Z_DEFLATED) { - strm->msg = (char *)"unknown compression method"; - state->mode = BAD; - break; - } - DROPBITS(4); - len = BITS(4) + 8; - if (state->wbits == 0) - state->wbits = len; - if (len > 15 || len > state->wbits) { - strm->msg = (char *)"invalid window size"; - state->mode = BAD; - break; - } - state->dmax = 1U << len; - Tracev((stderr, "inflate: zlib header ok\n")); - strm->adler = state->check = functable.adler32(0L, NULL, 0); - state->mode = hold & 0x200 ? DICTID : TYPE; - INITBITS(); - break; -#ifdef GUNZIP - case FLAGS: - NEEDBITS(16); - state->flags = (int)(hold); - if ((state->flags & 0xff) != Z_DEFLATED) { - strm->msg = (char *)"unknown compression method"; - state->mode = BAD; - break; - } - if (state->flags & 0xe000) { - strm->msg = (char *)"unknown header flags set"; - state->mode = BAD; - break; - } - if (state->head != NULL) - state->head->text = (int)((hold >> 8) & 1); - if ((state->flags & 0x0200) && (state->wrap & 4)) - CRC2(state->check, hold); - INITBITS(); - state->mode = TIME; - case TIME: - NEEDBITS(32); - if (state->head != NULL) - state->head->time = hold; - if ((state->flags & 0x0200) && (state->wrap & 4)) - CRC4(state->check, hold); - INITBITS(); - state->mode = OS; - case OS: - NEEDBITS(16); - if (state->head != NULL) { - state->head->xflags = (int)(hold & 0xff); - state->head->os = (int)(hold >> 8); - } - if ((state->flags & 0x0200) && (state->wrap & 4)) - CRC2(state->check, hold); - INITBITS(); - state->mode = EXLEN; - case EXLEN: - if (state->flags & 0x0400) { - NEEDBITS(16); - state->length = (uint16_t)hold; - if (state->head != NULL) - state->head->extra_len = (uint16_t)hold; - if ((state->flags & 0x0200) && (state->wrap & 4)) - CRC2(state->check, hold); - INITBITS(); - } else if (state->head != NULL) { - state->head->extra = NULL; - } - state->mode = EXTRA; - case EXTRA: - if (state->flags & 0x0400) { - copy = state->length; - if (copy > have) - copy = have; - if (copy) { - if (state->head != NULL && - state->head->extra != NULL) { - len = state->head->extra_len - state->length; - memcpy(state->head->extra + len, next, - len + copy > state->head->extra_max ? - state->head->extra_max - len : copy); - } - if ((state->flags & 0x0200) && (state->wrap & 4)) - state->check = PREFIX(crc32)(state->check, next, copy); - have -= copy; - next += copy; - state->length -= copy; - } - if (state->length) - goto inf_leave; - } - state->length = 0; - state->mode = NAME; - case NAME: - if (state->flags & 0x0800) { - if (have == 0) goto inf_leave; - copy = 0; - do { - len = (unsigned)(next[copy++]); - if (state->head != NULL && state->head->name != NULL && state->length < state->head->name_max) - state->head->name[state->length++] = (unsigned char)len; - } while (len && copy < have); - if ((state->flags & 0x0200) && (state->wrap & 4)) - state->check = PREFIX(crc32)(state->check, next, copy); - have -= copy; - next += copy; - if (len) - goto inf_leave; - } else if (state->head != NULL) { - state->head->name = NULL; - } - state->length = 0; - state->mode = COMMENT; - case COMMENT: - if (state->flags & 0x1000) { - if (have == 0) goto inf_leave; - copy = 0; - do { - len = (unsigned)(next[copy++]); - if (state->head != NULL && state->head->comment != NULL - && state->length < state->head->comm_max) - state->head->comment[state->length++] = (unsigned char)len; - } while (len && copy < have); - if ((state->flags & 0x0200) && (state->wrap & 4)) - state->check = PREFIX(crc32)(state->check, next, copy); - have -= copy; - next += copy; - if (len) - goto inf_leave; - } else if (state->head != NULL) { - state->head->comment = NULL; - } - state->mode = HCRC; - case HCRC: - if (state->flags & 0x0200) { - NEEDBITS(16); - if ((state->wrap & 4) && hold != (state->check & 0xffff)) { - strm->msg = (char *)"header crc mismatch"; - state->mode = BAD; - break; - } - INITBITS(); - } - if (state->head != NULL) { - state->head->hcrc = (int)((state->flags >> 9) & 1); - state->head->done = 1; - } - strm->adler = state->check = PREFIX(crc32)(0L, NULL, 0); - state->mode = TYPE; - break; -#endif - case DICTID: - NEEDBITS(32); - strm->adler = state->check = ZSWAP32(hold); - INITBITS(); - state->mode = DICT; - case DICT: - if (state->havedict == 0) { - RESTORE(); - return Z_NEED_DICT; - } - strm->adler = state->check = functable.adler32(0L, NULL, 0); - state->mode = TYPE; - case TYPE: - if (flush == Z_BLOCK || flush == Z_TREES) - goto inf_leave; - case TYPEDO: - INFLATE_TYPEDO_HOOK(strm, flush); /* hook for IBM Z DFLTCC */ - if (state->last) { - BYTEBITS(); - state->mode = CHECK; - break; - } - NEEDBITS(3); - state->last = BITS(1); - DROPBITS(1); - switch (BITS(2)) { - case 0: /* stored block */ - Tracev((stderr, "inflate: stored block%s\n", state->last ? " (last)" : "")); - state->mode = STORED; - break; - case 1: /* fixed block */ - fixedtables(state); - Tracev((stderr, "inflate: fixed codes block%s\n", state->last ? " (last)" : "")); - state->mode = LEN_; /* decode codes */ - if (flush == Z_TREES) { - DROPBITS(2); - goto inf_leave; - } - break; - case 2: /* dynamic block */ - Tracev((stderr, "inflate: dynamic codes block%s\n", state->last ? " (last)" : "")); - state->mode = TABLE; - break; - case 3: - strm->msg = (char *)"invalid block type"; - state->mode = BAD; - } - DROPBITS(2); - break; - case STORED: - BYTEBITS(); /* go to byte boundary */ - NEEDBITS(32); - if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) { - strm->msg = (char *)"invalid stored block lengths"; - state->mode = BAD; - break; - } - state->length = (uint16_t)hold; - Tracev((stderr, "inflate: stored length %u\n", state->length)); - INITBITS(); - state->mode = COPY_; - if (flush == Z_TREES) - goto inf_leave; - case COPY_: - state->mode = COPY; - case COPY: - copy = state->length; - if (copy) { - if (copy > have) copy = have; - if (copy > left) copy = left; - if (copy == 0) goto inf_leave; - memcpy(put, next, copy); - have -= copy; - next += copy; - left -= copy; - put += copy; - state->length -= copy; - break; - } - Tracev((stderr, "inflate: stored end\n")); - state->mode = TYPE; - break; - case TABLE: - NEEDBITS(14); - state->nlen = BITS(5) + 257; - DROPBITS(5); - state->ndist = BITS(5) + 1; - DROPBITS(5); - state->ncode = BITS(4) + 4; - DROPBITS(4); -#ifndef PKZIP_BUG_WORKAROUND - if (state->nlen > 286 || state->ndist > 30) { - strm->msg = (char *)"too many length or distance symbols"; - state->mode = BAD; - break; - } -#endif - Tracev((stderr, "inflate: table sizes ok\n")); - state->have = 0; - state->mode = LENLENS; - case LENLENS: - while (state->have < state->ncode) { - NEEDBITS(3); - state->lens[order[state->have++]] = (uint16_t)BITS(3); - DROPBITS(3); - } - while (state->have < 19) - state->lens[order[state->have++]] = 0; - state->next = state->codes; - state->lencode = (const code *)(state->next); - state->lenbits = 7; - ret = inflate_table(CODES, state->lens, 19, &(state->next), &(state->lenbits), state->work); - if (ret) { - strm->msg = (char *)"invalid code lengths set"; - state->mode = BAD; - break; - } - Tracev((stderr, "inflate: code lengths ok\n")); - state->have = 0; - state->mode = CODELENS; - case CODELENS: - while (state->have < state->nlen + state->ndist) { - for (;;) { - here = state->lencode[BITS(state->lenbits)]; - if (here.bits <= bits) break; - PULLBYTE(); - } - if (here.val < 16) { - DROPBITS(here.bits); - state->lens[state->have++] = here.val; - } else { - if (here.val == 16) { - NEEDBITS(here.bits + 2); - DROPBITS(here.bits); - if (state->have == 0) { - strm->msg = (char *)"invalid bit length repeat"; - state->mode = BAD; - break; - } - len = state->lens[state->have - 1]; - copy = 3 + BITS(2); - DROPBITS(2); - } else if (here.val == 17) { - NEEDBITS(here.bits + 3); - DROPBITS(here.bits); - len = 0; - copy = 3 + BITS(3); - DROPBITS(3); - } else { - NEEDBITS(here.bits + 7); - DROPBITS(here.bits); - len = 0; - copy = 11 + BITS(7); - DROPBITS(7); - } - if (state->have + copy > state->nlen + state->ndist) { - strm->msg = (char *)"invalid bit length repeat"; - state->mode = BAD; - break; - } - while (copy) { - --copy; - state->lens[state->have++] = (uint16_t)len; - } - } - } - - /* handle error breaks in while */ - if (state->mode == BAD) - break; - - /* check for end-of-block code (better have one) */ - if (state->lens[256] == 0) { - strm->msg = (char *)"invalid code -- missing end-of-block"; - state->mode = BAD; - break; - } - - /* build code tables -- note: do not change the lenbits or distbits - values here (9 and 6) without reading the comments in inftrees.h - concerning the ENOUGH constants, which depend on those values */ - state->next = state->codes; - state->lencode = (const code *)(state->next); - state->lenbits = 9; - ret = inflate_table(LENS, state->lens, state->nlen, &(state->next), &(state->lenbits), state->work); - if (ret) { - strm->msg = (char *)"invalid literal/lengths set"; - state->mode = BAD; - break; - } - state->distcode = (const code *)(state->next); - state->distbits = 6; - ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist, - &(state->next), &(state->distbits), state->work); - if (ret) { - strm->msg = (char *)"invalid distances set"; - state->mode = BAD; - break; - } - Tracev((stderr, "inflate: codes ok\n")); - state->mode = LEN_; - if (flush == Z_TREES) - goto inf_leave; - case LEN_: - state->mode = LEN; - case LEN: - if (have >= INFLATE_FAST_MIN_HAVE && - left >= INFLATE_FAST_MIN_LEFT) { - RESTORE(); - inflate_fast(strm, out); - LOAD(); - if (state->mode == TYPE) - state->back = -1; - break; - } - state->back = 0; - for (;;) { - here = state->lencode[BITS(state->lenbits)]; - if (here.bits <= bits) - break; - PULLBYTE(); - } - if (here.op && (here.op & 0xf0) == 0) { - last = here; - for (;;) { - here = state->lencode[last.val + (BITS(last.bits + last.op) >> last.bits)]; - if ((unsigned)last.bits + (unsigned)here.bits <= bits) - break; - PULLBYTE(); - } - DROPBITS(last.bits); - state->back += last.bits; - } - DROPBITS(here.bits); - state->back += here.bits; - state->length = here.val; - if ((int)(here.op) == 0) { - Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ? - "inflate: literal '%c'\n" : - "inflate: literal 0x%02x\n", here.val)); - state->mode = LIT; - break; - } - if (here.op & 32) { - Tracevv((stderr, "inflate: end of block\n")); - state->back = -1; - state->mode = TYPE; - break; - } - if (here.op & 64) { - strm->msg = (char *)"invalid literal/length code"; - state->mode = BAD; - break; - } - state->extra = (here.op & 15); - state->mode = LENEXT; - case LENEXT: - if (state->extra) { - NEEDBITS(state->extra); - state->length += BITS(state->extra); - DROPBITS(state->extra); - state->back += state->extra; - } - Tracevv((stderr, "inflate: length %u\n", state->length)); - state->was = state->length; - state->mode = DIST; - case DIST: - for (;;) { - here = state->distcode[BITS(state->distbits)]; - if (here.bits <= bits) - break; - PULLBYTE(); - } - if ((here.op & 0xf0) == 0) { - last = here; - for (;;) { - here = state->distcode[last.val + (BITS(last.bits + last.op) >> last.bits)]; - if ((unsigned)last.bits + (unsigned)here.bits <= bits) - break; - PULLBYTE(); - } - DROPBITS(last.bits); - state->back += last.bits; - } - DROPBITS(here.bits); - state->back += here.bits; - if (here.op & 64) { - strm->msg = (char *)"invalid distance code"; - state->mode = BAD; - break; - } - state->offset = here.val; - state->extra = (here.op & 15); - state->mode = DISTEXT; - case DISTEXT: - if (state->extra) { - NEEDBITS(state->extra); - state->offset += BITS(state->extra); - DROPBITS(state->extra); - state->back += state->extra; - } -#ifdef INFLATE_STRICT - if (state->offset > state->dmax) { - strm->msg = (char *)"invalid distance too far back"; - state->mode = BAD; - break; - } -#endif - Tracevv((stderr, "inflate: distance %u\n", state->offset)); - state->mode = MATCH; - case MATCH: - if (left == 0) goto inf_leave; - copy = out - left; - if (state->offset > copy) { /* copy from window */ - copy = state->offset - copy; - if (copy > state->whave) { - if (state->sane) { - strm->msg = (char *)"invalid distance too far back"; - state->mode = BAD; - break; - } -#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR - Trace((stderr, "inflate.c too far\n")); - copy -= state->whave; - if (copy > state->length) - copy = state->length; - if (copy > left) - copy = left; - left -= copy; - state->length -= copy; - do { - *put++ = 0; - } while (--copy); - if (state->length == 0) - state->mode = LEN; - break; -#endif - } - if (copy > state->wnext) { - copy -= state->wnext; - from = state->window + (state->wsize - copy); - } else { - from = state->window + (state->wnext - copy); - } - if (copy > state->length) - copy = state->length; - if (copy > left) - copy = left; -#if defined(INFFAST_CHUNKSIZE) - put = chunkcopysafe(put, from, copy, put + left); -#else - if (copy >= sizeof(uint64_t)) - put = chunk_memcpy(put, from, copy); - else - put = copy_bytes(put, from, copy); -#endif - } else { /* copy from output */ - copy = state->length; - if (copy > left) - copy = left; -#if defined(INFFAST_CHUNKSIZE) - put = chunkmemsetsafe(put, state->offset, copy, left); -#else - if (copy >= sizeof(uint64_t)) - put = chunk_memset(put, put - state->offset, state->offset, copy); - else - put = set_bytes(put, put - state->offset, state->offset, copy); -#endif - } - left -= copy; - state->length -= copy; - if (state->length == 0) - state->mode = LEN; - break; - case LIT: - if (left == 0) - goto inf_leave; - *put++ = (unsigned char)(state->length); - left--; - state->mode = LEN; - break; - case CHECK: - if (state->wrap) { - NEEDBITS(32); - out -= left; - strm->total_out += out; - state->total += out; - if (INFLATE_NEED_CHECKSUM(strm) && (state->wrap & 4) && out) - strm->adler = state->check = UPDATE(state->check, put - out, out); - out = left; - if ((state->wrap & 4) && ( -#ifdef GUNZIP - state->flags ? hold : -#endif - ZSWAP32(hold)) != state->check) { - strm->msg = (char *)"incorrect data check"; - state->mode = BAD; - break; - } - INITBITS(); - Tracev((stderr, "inflate: check matches trailer\n")); - } -#ifdef GUNZIP - state->mode = LENGTH; - case LENGTH: - if (state->wrap && state->flags) { - NEEDBITS(32); - if (hold != (state->total & 0xffffffffUL)) { - strm->msg = (char *)"incorrect length check"; - state->mode = BAD; - break; - } - INITBITS(); - Tracev((stderr, "inflate: length matches trailer\n")); - } -#endif - state->mode = DONE; - case DONE: - ret = Z_STREAM_END; - goto inf_leave; - case BAD: - ret = Z_DATA_ERROR; - goto inf_leave; - case MEM: - return Z_MEM_ERROR; - case SYNC: - default: - return Z_STREAM_ERROR; - } - - /* - Return from inflate(), updating the total counts and the check value. - If there was no progress during the inflate() call, return a buffer - error. Call updatewindow() to create and/or update the window state. - Note: a memory error from inflate() is non-recoverable. - */ - inf_leave: - RESTORE(); - if (INFLATE_NEED_UPDATEWINDOW(strm) && - (state->wsize || (out != strm->avail_out && state->mode < BAD && - (state->mode < CHECK || flush != Z_FINISH)))) { - if (updatewindow(strm, strm->next_out, out - strm->avail_out)) { - state->mode = MEM; - return Z_MEM_ERROR; - } - } - in -= strm->avail_in; - out -= strm->avail_out; - strm->total_in += in; - strm->total_out += out; - state->total += out; - if (INFLATE_NEED_CHECKSUM(strm) && (state->wrap & 4) && out) - strm->adler = state->check = UPDATE(state->check, strm->next_out - out, out); - strm->data_type = (int)state->bits + (state->last ? 64 : 0) + - (state->mode == TYPE ? 128 : 0) + (state->mode == LEN_ || state->mode == COPY_ ? 256 : 0); - if (((in == 0 && out == 0) || flush == Z_FINISH) && ret == Z_OK) - ret = Z_BUF_ERROR; - return ret; -} - -int ZEXPORT PREFIX(inflateEnd)(PREFIX3(stream) *strm) { - struct inflate_state *state; - if (inflateStateCheck(strm)) - return Z_STREAM_ERROR; - state = (struct inflate_state *)strm->state; - if (state->window != NULL) - ZFREE_WINDOW(strm, state->window); - ZFREE_STATE(strm, strm->state); - strm->state = NULL; - Tracev((stderr, "inflate: end\n")); - return Z_OK; -} - -int ZEXPORT PREFIX(inflateGetDictionary)(PREFIX3(stream) *strm, unsigned char *dictionary, unsigned int *dictLength) { - struct inflate_state *state; - - /* check state */ - if (inflateStateCheck(strm)) - return Z_STREAM_ERROR; - state = (struct inflate_state *)strm->state; - - /* copy dictionary */ - if (state->whave && dictionary != NULL) { - memcpy(dictionary, state->window + state->wnext, state->whave - state->wnext); - memcpy(dictionary + state->whave - state->wnext, state->window, state->wnext); - } - if (dictLength != NULL) - *dictLength = state->whave; - return Z_OK; -} - -int ZEXPORT PREFIX(inflateSetDictionary)(PREFIX3(stream) *strm, const unsigned char *dictionary, unsigned int dictLength) { - struct inflate_state *state; - unsigned long dictid; - int ret; - - /* check state */ - if (inflateStateCheck(strm)) - return Z_STREAM_ERROR; - state = (struct inflate_state *)strm->state; - if (state->wrap != 0 && state->mode != DICT) - return Z_STREAM_ERROR; - - /* check for correct dictionary identifier */ - if (state->mode == DICT) { - dictid = functable.adler32(0L, NULL, 0); - dictid = functable.adler32(dictid, dictionary, dictLength); - if (dictid != state->check) - return Z_DATA_ERROR; - } - - /* copy dictionary to window using updatewindow(), which will amend the - existing dictionary if appropriate */ - ret = updatewindow(strm, dictionary + dictLength, dictLength); - if (ret) { - state->mode = MEM; - return Z_MEM_ERROR; - } - state->havedict = 1; - Tracev((stderr, "inflate: dictionary set\n")); - return Z_OK; -} - -int ZEXPORT PREFIX(inflateGetHeader)(PREFIX3(stream) *strm, PREFIX(gz_headerp) head) { - struct inflate_state *state; - - /* check state */ - if (inflateStateCheck(strm)) - return Z_STREAM_ERROR; - state = (struct inflate_state *)strm->state; - if ((state->wrap & 2) == 0) - return Z_STREAM_ERROR; - - /* save header structure */ - state->head = head; - head->done = 0; - return Z_OK; -} - -/* - Search buf[0..len-1] for the pattern: 0, 0, 0xff, 0xff. Return when found - or when out of input. When called, *have is the number of pattern bytes - found in order so far, in 0..3. On return *have is updated to the new - state. If on return *have equals four, then the pattern was found and the - return value is how many bytes were read including the last byte of the - pattern. If *have is less than four, then the pattern has not been found - yet and the return value is len. In the latter case, syncsearch() can be - called again with more data and the *have state. *have is initialized to - zero for the first call. - */ -static uint32_t syncsearch(uint32_t *have, const unsigned char *buf, uint32_t len) { - uint32_t got; - uint32_t next; - - got = *have; - next = 0; - while (next < len && got < 4) { - if ((int)(buf[next]) == (got < 2 ? 0 : 0xff)) - got++; - else if (buf[next]) - got = 0; - else - got = 4 - got; - next++; - } - *have = got; - return next; -} - -int ZEXPORT PREFIX(inflateSync)(PREFIX3(stream) *strm) { - unsigned len; /* number of bytes to look at or looked at */ - size_t in, out; /* temporary to save total_in and total_out */ - unsigned char buf[4]; /* to restore bit buffer to byte string */ - struct inflate_state *state; - - /* check parameters */ - if (inflateStateCheck(strm)) - return Z_STREAM_ERROR; - state = (struct inflate_state *)strm->state; - if (strm->avail_in == 0 && state->bits < 8) - return Z_BUF_ERROR; - - /* if first time, start search in bit buffer */ - if (state->mode != SYNC) { - state->mode = SYNC; - state->hold <<= state->bits & 7; - state->bits -= state->bits & 7; - len = 0; - while (state->bits >= 8) { - buf[len++] = (unsigned char)(state->hold); - state->hold >>= 8; - state->bits -= 8; - } - state->have = 0; - syncsearch(&(state->have), buf, len); - } - - /* search available input */ - len = syncsearch(&(state->have), strm->next_in, strm->avail_in); - strm->avail_in -= len; - strm->next_in += len; - strm->total_in += len; - - /* return no joy or set up to restart inflate() on a new block */ - if (state->have != 4) - return Z_DATA_ERROR; - if (state->mode == HEAD) - state->wrap = 0; /* never processed header, so assume raw */ - in = strm->total_in; - out = strm->total_out; - PREFIX(inflateReset)(strm); - strm->total_in = in; - strm->total_out = out; - state->mode = TYPE; - return Z_OK; -} - -/* - Returns true if inflate is currently at the end of a block generated by - Z_SYNC_FLUSH or Z_FULL_FLUSH. This function is used by one PPP - implementation to provide an additional safety check. PPP uses - Z_SYNC_FLUSH but removes the length bytes of the resulting empty stored - block. When decompressing, PPP checks that at the end of input packet, - inflate is waiting for these length bytes. - */ -int ZEXPORT PREFIX(inflateSyncPoint)(PREFIX3(stream) *strm) { - struct inflate_state *state; - - if (inflateStateCheck(strm)) - return Z_STREAM_ERROR; - state = (struct inflate_state *)strm->state; - return state->mode == STORED && state->bits == 0; -} - -int ZEXPORT PREFIX(inflateCopy)(PREFIX3(stream) *dest, PREFIX3(stream) *source) { - struct inflate_state *state; - struct inflate_state *copy; - unsigned char *window; - unsigned wsize; - - /* check input */ - if (inflateStateCheck(source) || dest == NULL) - return Z_STREAM_ERROR; - state = (struct inflate_state *)source->state; - - /* allocate space */ - copy = (struct inflate_state *) - ZALLOC_STATE(source, 1, sizeof(struct inflate_state)); - if (copy == NULL) - return Z_MEM_ERROR; - window = NULL; - if (state->window != NULL) { - window = (unsigned char *) ZALLOC_WINDOW(source, 1U << state->wbits, sizeof(unsigned char)); - if (window == NULL) { - ZFREE_STATE(source, copy); - return Z_MEM_ERROR; - } - } - - /* copy state */ - memcpy((void *)dest, (void *)source, sizeof(PREFIX3(stream))); - ZCOPY_STATE((void *)copy, (void *)state, sizeof(struct inflate_state)); - copy->strm = dest; - if (state->lencode >= state->codes && state->lencode <= state->codes + ENOUGH - 1) { - copy->lencode = copy->codes + (state->lencode - state->codes); - copy->distcode = copy->codes + (state->distcode - state->codes); - } - copy->next = copy->codes + (state->next - state->codes); - if (window != NULL) { - wsize = 1U << state->wbits; - memcpy(window, state->window, wsize); - } - copy->window = window; - dest->state = (struct internal_state *)copy; - return Z_OK; -} - -int ZEXPORT PREFIX(inflateUndermine)(PREFIX3(stream) *strm, int subvert) { - struct inflate_state *state; - - if (inflateStateCheck(strm)) - return Z_STREAM_ERROR; - state = (struct inflate_state *)strm->state; -#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR - state->sane = !subvert; - return Z_OK; -#else - (void)subvert; - state->sane = 1; - return Z_DATA_ERROR; -#endif -} - -int ZEXPORT PREFIX(inflateValidate)(PREFIX3(stream) *strm, int check) { - struct inflate_state *state; - - if (inflateStateCheck(strm)) - return Z_STREAM_ERROR; - state = (struct inflate_state *)strm->state; - if (check && state->wrap) - state->wrap |= 4; - else - state->wrap &= ~4; - return Z_OK; -} - -long ZEXPORT PREFIX(inflateMark)(PREFIX3(stream) *strm) { - struct inflate_state *state; - - if (inflateStateCheck(strm)) - return -65536; - INFLATE_MARK_HOOK(strm); /* hook for IBM Z DFLTCC */ - state = (struct inflate_state *)strm->state; - return ((long)(state->back) << 16) + (state->mode == COPY ? state->length : - (state->mode == MATCH ? state->was - state->length : 0)); -} - -unsigned long ZEXPORT PREFIX(inflateCodesUsed)(PREFIX3(stream) *strm) { - struct inflate_state *state; - if (strm == NULL || strm->state == NULL) - return (unsigned long)-1; - state = (struct inflate_state *)strm->state; - return (unsigned long)(state->next - state->codes); -} diff --git a/libs/zlibng/inflate.h b/libs/zlibng/inflate.h deleted file mode 100644 index 01fb1f9b0..000000000 --- a/libs/zlibng/inflate.h +++ /dev/null @@ -1,132 +0,0 @@ -/* inflate.h -- internal inflate state definition - * Copyright (C) 1995-2016 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* WARNING: this file should *not* be used by applications. It is - part of the implementation of the compression library and is - subject to change. Applications should only use zlib.h. - */ - -#ifndef INFLATE_H_ -#define INFLATE_H_ - -/* define NO_GZIP when compiling if you want to disable gzip header and - trailer decoding by inflate(). NO_GZIP would be used to avoid linking in - the crc code when it is not needed. For shared libraries, gzip decoding - should be left enabled. */ -#ifndef NO_GZIP -# define GUNZIP -#endif - -/* Possible inflate modes between inflate() calls */ -typedef enum { - HEAD = 16180, /* i: waiting for magic header */ - FLAGS, /* i: waiting for method and flags (gzip) */ - TIME, /* i: waiting for modification time (gzip) */ - OS, /* i: waiting for extra flags and operating system (gzip) */ - EXLEN, /* i: waiting for extra length (gzip) */ - EXTRA, /* i: waiting for extra bytes (gzip) */ - NAME, /* i: waiting for end of file name (gzip) */ - COMMENT, /* i: waiting for end of comment (gzip) */ - HCRC, /* i: waiting for header crc (gzip) */ - DICTID, /* i: waiting for dictionary check value */ - DICT, /* waiting for inflateSetDictionary() call */ - TYPE, /* i: waiting for type bits, including last-flag bit */ - TYPEDO, /* i: same, but skip check to exit inflate on new block */ - STORED, /* i: waiting for stored size (length and complement) */ - COPY_, /* i/o: same as COPY below, but only first time in */ - COPY, /* i/o: waiting for input or output to copy stored block */ - TABLE, /* i: waiting for dynamic block table lengths */ - LENLENS, /* i: waiting for code length code lengths */ - CODELENS, /* i: waiting for length/lit and distance code lengths */ - LEN_, /* i: same as LEN below, but only first time in */ - LEN, /* i: waiting for length/lit/eob code */ - LENEXT, /* i: waiting for length extra bits */ - DIST, /* i: waiting for distance code */ - DISTEXT, /* i: waiting for distance extra bits */ - MATCH, /* o: waiting for output space to copy string */ - LIT, /* o: waiting for output space to write literal */ - CHECK, /* i: waiting for 32-bit check value */ - LENGTH, /* i: waiting for 32-bit length (gzip) */ - DONE, /* finished check, done -- remain here until reset */ - BAD, /* got a data error -- remain here until reset */ - MEM, /* got an inflate() memory error -- remain here until reset */ - SYNC /* looking for synchronization bytes to restart inflate() */ -} inflate_mode; - -/* - State transitions between above modes - - - (most modes can go to BAD or MEM on error -- not shown for clarity) - - Process header: - HEAD -> (gzip) or (zlib) or (raw) - (gzip) -> FLAGS -> TIME -> OS -> EXLEN -> EXTRA -> NAME -> COMMENT -> - HCRC -> TYPE - (zlib) -> DICTID or TYPE - DICTID -> DICT -> TYPE - (raw) -> TYPEDO - Read deflate blocks: - TYPE -> TYPEDO -> STORED or TABLE or LEN_ or CHECK - STORED -> COPY_ -> COPY -> TYPE - TABLE -> LENLENS -> CODELENS -> LEN_ - LEN_ -> LEN - Read deflate codes in fixed or dynamic block: - LEN -> LENEXT or LIT or TYPE - LENEXT -> DIST -> DISTEXT -> MATCH -> LEN - LIT -> LEN - Process trailer: - CHECK -> LENGTH -> DONE - */ - -/* State maintained between inflate() calls -- approximately 7K bytes, not - including the allocated sliding window, which is up to 32K bytes. */ -struct inflate_state { - PREFIX3(stream) *strm; /* pointer back to this zlib stream */ - inflate_mode mode; /* current inflate mode */ - int last; /* true if processing last block */ - int wrap; /* bit 0 true for zlib, bit 1 true for gzip, - bit 2 true to validate check value */ - int havedict; /* true if dictionary provided */ - int flags; /* gzip header method and flags (0 if zlib) */ - unsigned dmax; /* zlib header max distance (INFLATE_STRICT) */ - unsigned long check; /* protected copy of check value */ - unsigned long total; /* protected copy of output count */ - PREFIX(gz_headerp) head; /* where to save gzip header information */ - /* sliding window */ - unsigned wbits; /* log base 2 of requested window size */ - uint32_t wsize; /* window size or zero if not using window */ - uint32_t whave; /* valid bytes in the window */ - uint32_t wnext; /* window write index */ - unsigned char *window; /* allocated sliding window, if needed */ - /* bit accumulator */ - uint32_t hold; /* input bit accumulator */ - unsigned bits; /* number of bits in "in" */ - /* for string and stored block copying */ - uint32_t length; /* literal or length of data to copy */ - unsigned offset; /* distance back to copy string from */ - /* for table and code decoding */ - unsigned extra; /* extra bits needed */ - /* fixed and dynamic code tables */ - code const *lencode; /* starting table for length/literal codes */ - code const *distcode; /* starting table for distance codes */ - unsigned lenbits; /* index bits for lencode */ - unsigned distbits; /* index bits for distcode */ - /* dynamic table building */ - unsigned ncode; /* number of code length code lengths */ - unsigned nlen; /* number of length code lengths */ - unsigned ndist; /* number of distance code lengths */ - uint32_t have; /* number of code lengths in lens[] */ - code *next; /* next available space in codes[] */ - uint16_t lens[320]; /* temporary storage for code lengths */ - uint16_t work[288]; /* work area for code table building */ - code codes[ENOUGH]; /* space for code tables */ - int sane; /* if false, allow invalid distance too far */ - int back; /* bits back of last unprocessed length/lit */ - unsigned was; /* initial length of match */ -}; - -int ZLIB_INTERNAL inflate_ensure_window(struct inflate_state *state); - -#endif /* INFLATE_H_ */ diff --git a/libs/zlibng/inftrees.c b/libs/zlibng/inftrees.c deleted file mode 100644 index 51e85375c..000000000 --- a/libs/zlibng/inftrees.c +++ /dev/null @@ -1,297 +0,0 @@ -/* inftrees.c -- generate Huffman trees for efficient decoding - * Copyright (C) 1995-2016 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -#include "zbuild.h" -#include "zutil.h" -#include "inftrees.h" - -#define MAXBITS 15 - -const char inflate_copyright[] = " inflate 1.2.11.f Copyright 1995-2016 Mark Adler "; -/* - If you use the zlib library in a product, an acknowledgment is welcome - in the documentation of your product. If for some reason you cannot - include such an acknowledgment, I would appreciate that you keep this - copyright string in the executable of your product. - */ - -/* - Build a set of tables to decode the provided canonical Huffman code. - The code lengths are lens[0..codes-1]. The result starts at *table, - whose indices are 0..2^bits-1. work is a writable array of at least - lens shorts, which is used as a work area. type is the type of code - to be generated, CODES, LENS, or DISTS. On return, zero is success, - -1 is an invalid code, and +1 means that ENOUGH isn't enough. table - on return points to the next available entry's address. bits is the - requested root table index bits, and on return it is the actual root - table index bits. It will differ if the request is greater than the - longest code or if it is less than the shortest code. - */ -int ZLIB_INTERNAL inflate_table(codetype type, uint16_t *lens, unsigned codes, - code * *table, unsigned *bits, uint16_t *work) { - unsigned len; /* a code's length in bits */ - unsigned sym; /* index of code symbols */ - unsigned min, max; /* minimum and maximum code lengths */ - unsigned root; /* number of index bits for root table */ - unsigned curr; /* number of index bits for current table */ - unsigned drop; /* code bits to drop for sub-table */ - int left; /* number of prefix codes available */ - unsigned used; /* code entries in table used */ - unsigned huff; /* Huffman code */ - unsigned incr; /* for incrementing code, index */ - unsigned fill; /* index for replicating entries */ - unsigned low; /* low bits for current root entry */ - unsigned mask; /* mask for low root bits */ - code here; /* table entry for duplication */ - code *next; /* next available space in table */ - const uint16_t *base; /* base value table to use */ - const uint16_t *extra; /* extra bits table to use */ - unsigned match; /* use base and extra for symbol >= match */ - uint16_t count[MAXBITS+1]; /* number of codes of each length */ - uint16_t offs[MAXBITS+1]; /* offsets in table for each length */ - static const uint16_t lbase[31] = { /* Length codes 257..285 base */ - 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, - 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0}; - static const uint16_t lext[31] = { /* Length codes 257..285 extra */ - 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18, - 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 77, 202}; - static const uint16_t dbase[32] = { /* Distance codes 0..29 base */ - 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, - 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145, - 8193, 12289, 16385, 24577, 0, 0}; - static const uint16_t dext[32] = { /* Distance codes 0..29 extra */ - 16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, - 23, 23, 24, 24, 25, 25, 26, 26, 27, 27, - 28, 28, 29, 29, 64, 64}; - - /* - Process a set of code lengths to create a canonical Huffman code. The - code lengths are lens[0..codes-1]. Each length corresponds to the - symbols 0..codes-1. The Huffman code is generated by first sorting the - symbols by length from short to long, and retaining the symbol order - for codes with equal lengths. Then the code starts with all zero bits - for the first code of the shortest length, and the codes are integer - increments for the same length, and zeros are appended as the length - increases. For the deflate format, these bits are stored backwards - from their more natural integer increment ordering, and so when the - decoding tables are built in the large loop below, the integer codes - are incremented backwards. - - This routine assumes, but does not check, that all of the entries in - lens[] are in the range 0..MAXBITS. The caller must assure this. - 1..MAXBITS is interpreted as that code length. zero means that that - symbol does not occur in this code. - - The codes are sorted by computing a count of codes for each length, - creating from that a table of starting indices for each length in the - sorted table, and then entering the symbols in order in the sorted - table. The sorted table is work[], with that space being provided by - the caller. - - The length counts are used for other purposes as well, i.e. finding - the minimum and maximum length codes, determining if there are any - codes at all, checking for a valid set of lengths, and looking ahead - at length counts to determine sub-table sizes when building the - decoding tables. - */ - - /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */ - for (len = 0; len <= MAXBITS; len++) - count[len] = 0; - for (sym = 0; sym < codes; sym++) - count[lens[sym]]++; - - /* bound code lengths, force root to be within code lengths */ - root = *bits; - for (max = MAXBITS; max >= 1; max--) - if (count[max] != 0) break; - if (root > max) root = max; - if (max == 0) { /* no symbols to code at all */ - here.op = (unsigned char)64; /* invalid code marker */ - here.bits = (unsigned char)1; - here.val = (uint16_t)0; - *(*table)++ = here; /* make a table to force an error */ - *(*table)++ = here; - *bits = 1; - return 0; /* no symbols, but wait for decoding to report error */ - } - for (min = 1; min < max; min++) - if (count[min] != 0) break; - if (root < min) root = min; - - /* check for an over-subscribed or incomplete set of lengths */ - left = 1; - for (len = 1; len <= MAXBITS; len++) { - left <<= 1; - left -= count[len]; - if (left < 0) return -1; /* over-subscribed */ - } - if (left > 0 && (type == CODES || max != 1)) - return -1; /* incomplete set */ - - /* generate offsets into symbol table for each length for sorting */ - offs[1] = 0; - for (len = 1; len < MAXBITS; len++) - offs[len + 1] = offs[len] + count[len]; - - /* sort symbols by length, by symbol order within each length */ - for (sym = 0; sym < codes; sym++) - if (lens[sym] != 0) work[offs[lens[sym]]++] = (uint16_t)sym; - - /* - Create and fill in decoding tables. In this loop, the table being - filled is at next and has curr index bits. The code being used is huff - with length len. That code is converted to an index by dropping drop - bits off of the bottom. For codes where len is less than drop + curr, - those top drop + curr - len bits are incremented through all values to - fill the table with replicated entries. - - root is the number of index bits for the root table. When len exceeds - root, sub-tables are created pointed to by the root entry with an index - of the low root bits of huff. This is saved in low to check for when a - new sub-table should be started. drop is zero when the root table is - being filled, and drop is root when sub-tables are being filled. - - When a new sub-table is needed, it is necessary to look ahead in the - code lengths to determine what size sub-table is needed. The length - counts are used for this, and so count[] is decremented as codes are - entered in the tables. - - used keeps track of how many table entries have been allocated from the - provided *table space. It is checked for LENS and DIST tables against - the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in - the initial root table size constants. See the comments in inftrees.h - for more information. - - sym increments through all symbols, and the loop terminates when - all codes of length max, i.e. all codes, have been processed. This - routine permits incomplete codes, so another loop after this one fills - in the rest of the decoding tables with invalid code markers. - */ - - /* set up for code type */ - switch (type) { - case CODES: - base = extra = work; /* dummy value--not used */ - match = 20; - break; - case LENS: - base = lbase; - extra = lext; - match = 257; - break; - default: /* DISTS */ - base = dbase; - extra = dext; - match = 0; - } - - /* initialize state for loop */ - huff = 0; /* starting code */ - sym = 0; /* starting code symbol */ - len = min; /* starting code length */ - next = *table; /* current table to fill in */ - curr = root; /* current table index bits */ - drop = 0; /* current bits to drop from code for index */ - low = (unsigned)(-1); /* trigger new sub-table when len > root */ - used = 1U << root; /* use root table entries */ - mask = used - 1; /* mask for comparing low */ - - /* check available table space */ - if ((type == LENS && used > ENOUGH_LENS) || - (type == DISTS && used > ENOUGH_DISTS)) - return 1; - - /* process all codes and make table entries */ - for (;;) { - /* create table entry */ - here.bits = (unsigned char)(len - drop); - if (work[sym] + 1U < match) { - here.op = (unsigned char)0; - here.val = work[sym]; - } else if (work[sym] >= match) { - here.op = (unsigned char)(extra[work[sym] - match]); - here.val = base[work[sym] - match]; - } else { - here.op = (unsigned char)(32 + 64); /* end of block */ - here.val = 0; - } - - /* replicate for those indices with low len bits equal to huff */ - incr = 1U << (len - drop); - fill = 1U << curr; - min = fill; /* save offset to next table */ - do { - fill -= incr; - next[(huff >> drop) + fill] = here; - } while (fill != 0); - - /* backwards increment the len-bit code huff */ - incr = 1U << (len - 1); - while (huff & incr) - incr >>= 1; - if (incr != 0) { - huff &= incr - 1; - huff += incr; - } else { - huff = 0; - } - - /* go to next symbol, update count, len */ - sym++; - if (--(count[len]) == 0) { - if (len == max) - break; - len = lens[work[sym]]; - } - - /* create new sub-table if needed */ - if (len > root && (huff & mask) != low) { - /* if first time, transition to sub-tables */ - if (drop == 0) - drop = root; - - /* increment past last table */ - next += min; /* here min is 1 << curr */ - - /* determine length of next table */ - curr = len - drop; - left = (int)(1 << curr); - while (curr + drop < max) { - left -= count[curr + drop]; - if (left <= 0) - break; - curr++; - left <<= 1; - } - - /* check for enough space */ - used += 1U << curr; - if ((type == LENS && used > ENOUGH_LENS) || (type == DISTS && used > ENOUGH_DISTS)) - return 1; - - /* point entry in root table to sub-table */ - low = huff & mask; - (*table)[low].op = (unsigned char)curr; - (*table)[low].bits = (unsigned char)root; - (*table)[low].val = (uint16_t)(next - *table); - } - } - - /* fill in remaining table entry if code is incomplete (guaranteed to have - at most one remaining entry, since if the code is incomplete, the - maximum code length that was allowed to get this far is one bit) */ - if (huff != 0) { - here.op = (unsigned char)64; /* invalid code marker */ - here.bits = (unsigned char)(len - drop); - here.val = (uint16_t)0; - next[huff] = here; - } - - /* set return parameters */ - *table += used; - *bits = root; - return 0; -} diff --git a/libs/zlibng/inftrees.h b/libs/zlibng/inftrees.h deleted file mode 100644 index eaf3df1ca..000000000 --- a/libs/zlibng/inftrees.h +++ /dev/null @@ -1,66 +0,0 @@ -#ifndef INFTREES_H_ -#define INFTREES_H_ - -/* inftrees.h -- header to use inftrees.c - * Copyright (C) 1995-2005, 2010 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* WARNING: this file should *not* be used by applications. It is - part of the implementation of the compression library and is - subject to change. Applications should only use zlib.h. - */ - -/* Structure for decoding tables. Each entry provides either the - information needed to do the operation requested by the code that - indexed that table entry, or it provides a pointer to another - table that indexes more bits of the code. op indicates whether - the entry is a pointer to another table, a literal, a length or - distance, an end-of-block, or an invalid code. For a table - pointer, the low four bits of op is the number of index bits of - that table. For a length or distance, the low four bits of op - is the number of extra bits to get after the code. bits is - the number of bits in this code or part of the code to drop off - of the bit buffer. val is the actual byte to output in the case - of a literal, the base length or distance, or the offset from - the current table to the next table. Each entry is four bytes. */ -typedef struct { - unsigned char op; /* operation, extra bits, table bits */ - unsigned char bits; /* bits in this part of the code */ - uint16_t val; /* offset in table or code value */ -} code; - -/* op values as set by inflate_table(): - 00000000 - literal - 0000tttt - table link, tttt != 0 is the number of table index bits - 0001eeee - length or distance, eeee is the number of extra bits - 01100000 - end of block - 01000000 - invalid code - */ - -/* Maximum size of the dynamic table. The maximum number of code structures is - 1444, which is the sum of 852 for literal/length codes and 592 for distance - codes. These values were found by exhaustive searches using the program - examples/enough.c found in the zlib distribtution. The arguments to that - program are the number of symbols, the initial root table size, and the - maximum bit length of a code. "enough 286 9 15" for literal/length codes - returns returns 852, and "enough 30 6 15" for distance codes returns 592. - The initial root table size (9 or 6) is found in the fifth argument of the - inflate_table() calls in inflate.c and infback.c. If the root table size is - changed, then these maximum sizes would be need to be recalculated and - updated. */ -#define ENOUGH_LENS 852 -#define ENOUGH_DISTS 592 -#define ENOUGH (ENOUGH_LENS+ENOUGH_DISTS) - -/* Type of code to build for inflate_table() */ -typedef enum { - CODES, - LENS, - DISTS -} codetype; - -int ZLIB_INTERNAL inflate_table (codetype type, uint16_t *lens, unsigned codes, - code * *table, unsigned *bits, uint16_t *work); - -#endif /* INFTREES_H_ */ diff --git a/libs/zlibng/match_p.h b/libs/zlibng/match_p.h deleted file mode 100644 index b956d8d52..000000000 --- a/libs/zlibng/match_p.h +++ /dev/null @@ -1,512 +0,0 @@ -/* - * Set match_start to the longest match starting at the given string and - * return its length. Matches shorter or equal to prev_length are discarded, - * in which case the result is equal to prev_length and match_start is garbage. - * - * IN assertions: cur_match is the head of the hash chain for the current - * string (strstart) and its distance is <= MAX_DIST, and prev_length >=1 - * OUT assertion: the match length is not greater than s->lookahead - */ - -#include "zbuild.h" -#include "deflate.h" - -#if (defined(UNALIGNED_OK) && MAX_MATCH == 258) - - /* ARM 32-bit clang/gcc builds perform better, on average, with std2. Both gcc and clang and define __GNUC__. */ -# if defined(__GNUC__) && defined(__arm__) && !defined(__aarch64__) -# define std2_longest_match - /* Only use std3_longest_match for little_endian systems, also avoid using it with - non-gcc compilers since the __builtin_ctzl() function might not be optimized. */ -# elif(defined(__GNUC__) && defined(HAVE_BUILTIN_CTZL) && ((__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \ - || defined(__LITTLE_ENDIAN__))) -# define std3_longest_match -# elif(defined(_MSC_VER) && defined(_WIN32)) -# define std3_longest_match -# else -# define std2_longest_match -# endif - -#else -# define std1_longest_match -#endif - - -#if defined(_MSC_VER) && !defined(__clang__) -# if defined(_M_IX86) || defined(_M_AMD64) || defined(_M_IA64) -# include "arch/x86/ctzl.h" -# elif defined(_M_ARM) -# include "arch/arm/ctzl.h" -# endif -#endif - - - -#ifdef std1_longest_match - -/* - * Standard longest_match - * - */ -static inline unsigned longest_match(deflate_state *const s, IPos cur_match) { - const unsigned wmask = s->w_mask; - const Pos *prev = s->prev; - - unsigned chain_length; - IPos limit; - unsigned int len, best_len, nice_match; - unsigned char *scan, *match, *strend, scan_end, scan_end1; - - /* - * The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple - * of 16. It is easy to get rid of this optimization if necessary. - */ - Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever"); - - /* - * Do not waste too much time if we already have a good match - */ - best_len = s->prev_length; - chain_length = s->max_chain_length; - if (best_len >= s->good_match) - chain_length >>= 2; - - /* - * Do not looks for matches beyond the end of the input. This is - * necessary to make deflate deterministic - */ - nice_match = (unsigned int)s->nice_match > s->lookahead ? s->lookahead : (unsigned int)s->nice_match; - - /* - * Stop when cur_match becomes <= limit. To simplify the code, - * we prevent matches with the string of window index 0 - */ - limit = s->strstart > MAX_DIST(s) ? s->strstart - MAX_DIST(s) : 0; - - scan = s->window + s->strstart; - strend = s->window + s->strstart + MAX_MATCH; - scan_end1 = scan[best_len-1]; - scan_end = scan[best_len]; - - Assert((unsigned long)s->strstart <= s->window_size - MIN_LOOKAHEAD, "need lookahead"); - do { - if (cur_match >= s->strstart) { - break; - } - match = s->window + cur_match; - - /* - * Skip to next match if the match length cannot increase - * or if the match length is less than 2. Note that the checks - * below for insufficient lookahead only occur occasionally - * for performance reasons. Therefore uninitialized memory - * will be accessed and conditional jumps will be made that - * depend on those values. However the length of the match - * is limited to the lookahead, so the output of deflate is not - * affected by the uninitialized values. - */ - if (match[best_len] != scan_end || - match[best_len-1] != scan_end1 || - *match != *scan || - *++match != scan[1]) - continue; - - /* - * The check at best_len-1 can be removed because it will - * be made again later. (This heuristic is not always a win.) - * It is not necessary to compare scan[2] and match[2] since - * they are always equal when the other bytes match, given - * that the hash keys are equal and that HASH_BITS >= 8. - */ - scan += 2; - match++; - Assert(*scan == *match, "match[2]?"); - - /* - * We check for insufficient lookahead only every 8th - * comparision; the 256th check will be made at strstart + 258. - */ - do { - } while (*++scan == *++match && *++scan == *++match && - *++scan == *++match && *++scan == *++match && - *++scan == *++match && *++scan == *++match && - *++scan == *++match && *++scan == *++match && - scan < strend); - - Assert(scan <= s->window+(unsigned int)(s->window_size-1), "wild scan"); - - len = MAX_MATCH - (int)(strend - scan); - scan = strend - MAX_MATCH; - - if (len > best_len) { - s->match_start = cur_match; - best_len = len; - if (len >= nice_match) - break; - scan_end1 = scan[best_len-1]; - scan_end = scan[best_len]; - } else { - /* - * The probability of finding a match later if we here - * is pretty low, so for performance it's best to - * outright stop here for the lower compression levels - */ - if (s->level < TRIGGER_LEVEL) - break; - } - } while ((cur_match = prev[cur_match & wmask]) > limit && --chain_length); - - if ((unsigned int)best_len <= s->lookahead) - return best_len; - return s->lookahead; -} -#endif - -#ifdef std2_longest_match -/* - * UNALIGNED_OK longest_match - * - */ -static inline unsigned longest_match(deflate_state *const s, IPos cur_match) { - const unsigned wmask = s->w_mask; - const Pos *prev = s->prev; - - uint16_t scan_start, scan_end; - unsigned chain_length; - IPos limit; - unsigned int len, best_len, nice_match; - unsigned char *scan, *strend; - - /* - * The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple - * of 16. It is easy to get rid of this optimization if necessary. - */ - Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever"); - - /* - * Do not waste too much time if we already have a good match - */ - best_len = s->prev_length; - chain_length = s->max_chain_length; - if (best_len >= s->good_match) - chain_length >>= 2; - - /* - * Do not look for matches beyond the end of the input. This is - * necessary to make deflate deterministic - */ - nice_match = (unsigned int)s->nice_match > s->lookahead ? s->lookahead : s->nice_match; - - /* - * Stop when cur_match becomes <= limit. To simplify the code, - * we prevent matches with the string of window index 0 - */ - limit = s->strstart > MAX_DIST(s) ? s->strstart - MAX_DIST(s) : 0; - - scan = s->window + s->strstart; - strend = s->window + s->strstart + MAX_MATCH - 1; - memcpy(&scan_start, scan, sizeof(scan_start)); - memcpy(&scan_end, scan + best_len - 1, sizeof(scan_end)); - - Assert((unsigned long)s->strstart <= s->window_size - MIN_LOOKAHEAD, "need lookahead"); - do { - unsigned char *match; - if (cur_match >= s->strstart) { - break; - } - match = s->window + cur_match; - - /* - * Skip to next match if the match length cannot increase - * or if the match length is less than 2. Note that the checks - * below for insufficient lookahead only occur occasionally - * for performance reasons. Therefore uninitialized memory - * will be accessed and conditional jumps will be made that - * depend on those values. However the length of the match - * is limited to the lookahead, so the output of deflate is not - * affected by the uninitialized values. - */ - uint16_t val; - memcpy(&val, match + best_len - 1, sizeof(val)); - if (likely(val != scan_end)) - continue; - - memcpy(&val, match, sizeof(val)); - if (val != scan_start) - continue; - - /* It is not necessary to compare scan[2] and match[2] since - * they are always equal when the other bytes match, given that - * the hash keys are equal and that HASH_BITS >= 8. Compare 2 - * bytes at a time at strstart+3, +5, ... up to strstart+257. - * We check for insufficient lookahead only every 4th - * comparison; the 128th check will be made at strstart+257. - * If MAX_MATCH-2 is not a multiple of 8, it is necessary to - * put more guard bytes at the end of the window, or to check - * more often for insufficient lookahead. - */ - Assert(scan[2] == match[2], "scan[2]?"); - scan++; - match++; - - do { - uint16_t mval, sval; - - memcpy(&mval, match, sizeof(mval)); - memcpy(&sval, scan, sizeof(sval)); - if (mval != sval) - break; - match += sizeof(mval); - scan += sizeof(sval); - - memcpy(&mval, match, sizeof(mval)); - memcpy(&sval, scan, sizeof(sval)); - if (mval != sval) - break; - match += sizeof(mval); - scan += sizeof(sval); - - memcpy(&mval, match, sizeof(mval)); - memcpy(&sval, scan, sizeof(sval)); - if (mval != sval) - break; - match += sizeof(mval); - scan += sizeof(sval); - - memcpy(&mval, match, sizeof(mval)); - memcpy(&sval, scan, sizeof(sval)); - if (mval != sval) - break; - match += sizeof(mval); - scan += sizeof(sval); - } while (scan < strend); - - /* - * Here, scan <= window + strstart + 257 - */ - Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan"); - if (*scan == *match) - scan++; - - len = (MAX_MATCH -1) - (int)(strend-scan); - scan = strend - (MAX_MATCH-1); - - if (len > best_len) { - s->match_start = cur_match; - best_len = len; - if (len >= nice_match) - break; - memcpy(&scan_end, scan + best_len - 1, sizeof(scan_end)); - } else { - /* - * The probability of finding a match later if we here - * is pretty low, so for performance it's best to - * outright stop here for the lower compression levels - */ - if (s->level < TRIGGER_LEVEL) - break; - } - } while (--chain_length && (cur_match = prev[cur_match & wmask]) > limit); - - if ((unsigned)best_len <= s->lookahead) - return best_len; - return s->lookahead; -} -#endif - -#ifdef std3_longest_match -/* longest_match() with minor change to improve performance (in terms of - * execution time). - * - * The pristine longest_match() function is sketched below (strip the - * then-clause of the "#ifdef UNALIGNED_OK"-directive) - * - * ------------------------------------------------------------ - * unsigned int longest_match(...) { - * ... - * do { - * match = s->window + cur_match; //s0 - * if (*(ushf*)(match+best_len-1) != scan_end || //s1 - * *(ushf*)match != scan_start) continue; //s2 - * ... - * - * do { - * } while (*(ushf*)(scan+=2) == *(ushf*)(match+=2) && - * *(ushf*)(scan+=2) == *(ushf*)(match+=2) && - * *(ushf*)(scan+=2) == *(ushf*)(match+=2) && - * *(ushf*)(scan+=2) == *(ushf*)(match+=2) && - * scan < strend); //s3 - * - * ... - * } while(cond); //s4 - * - * ------------------------------------------------------------- - * - * The change include: - * - * 1) The hottest statements of the function is: s0, s1 and s4. Pull them - * together to form a new loop. The benefit is two-fold: - * - * o. Ease the compiler to yield good code layout: the conditional-branch - * corresponding to s1 and its biased target s4 become very close (likely, - * fit in the same cache-line), hence improving instruction-fetching - * efficiency. - * - * o. Ease the compiler to promote "s->window" into register. "s->window" - * is loop-invariant; it is supposed to be promoted into register and keep - * the value throughout the entire loop. However, there are many such - * loop-invariant, and x86-family has small register file; "s->window" is - * likely to be chosen as register-allocation victim such that its value - * is reloaded from memory in every single iteration. By forming a new loop, - * "s->window" is loop-invariant of that newly created tight loop. It is - * lot easier for compiler to promote this quantity to register and keep - * its value throughout the entire small loop. - * - * 2) Transfrom s3 such that it examines sizeof(long)-byte-match at a time. - * This is done by: - * ------------------------------------------------ - * v1 = load from "scan" by sizeof(long) bytes - * v2 = load from "match" by sizeof(lnog) bytes - * v3 = v1 xor v2 - * match-bit = little-endian-machine(yes-for-x86) ? - * count-trailing-zero(v3) : - * count-leading-zero(v3); - * - * match-byte = match-bit/8 - * - * "scan" and "match" advance if necessary - * ------------------------------------------------- - */ - -static inline unsigned longest_match(deflate_state *const s, IPos cur_match) { - unsigned int strstart = s->strstart; - unsigned chain_length = s->max_chain_length;/* max hash chain length */ - unsigned char *window = s->window; - register unsigned char *scan = window + strstart; /* current string */ - register unsigned char *match; /* matched string */ - register unsigned int len; /* length of current match */ - unsigned int best_len = s->prev_length; /* best match length so far */ - unsigned int nice_match = s->nice_match; /* stop if match long enough */ - IPos limit = strstart > (IPos)MAX_DIST(s) ? - strstart - (IPos)MAX_DIST(s) : NIL; - /* Stop when cur_match becomes <= limit. To simplify the code, - * we prevent matches with the string of window index 0. - */ - Pos *prev = s->prev; - unsigned int wmask = s->w_mask; - - register unsigned char *strend = window + strstart + MAX_MATCH; - - uint16_t scan_start, scan_end; - - memcpy(&scan_start, scan, sizeof(scan_start)); - memcpy(&scan_end, scan+best_len-1, sizeof(scan_end)); - - /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16. - * It is easy to get rid of this optimization if necessary. - */ - Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever"); - - /* Do not waste too much time if we already have a good match: */ - if (s->prev_length >= s->good_match) { - chain_length >>= 2; - } - /* Do not look for matches beyond the end of the input. This is necessary - * to make deflate deterministic. - */ - if ((unsigned int)nice_match > s->lookahead) nice_match = s->lookahead; - - Assert((unsigned long)strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead"); - - do { - if (cur_match >= strstart) { - break; - } - - /* Skip to next match if the match length cannot increase - * or if the match length is less than 2. Note that the checks below - * for insufficient lookahead only occur occasionally for performance - * reasons. Therefore uninitialized memory will be accessed, and - * conditional jumps will be made that depend on those values. - * However the length of the match is limited to the lookahead, so - * the output of deflate is not affected by the uninitialized values. - */ - int cont = 1; - do { - match = window + cur_match; - if (likely(memcmp(match+best_len-1, &scan_end, sizeof(scan_end)) != 0)) { - if ((cur_match = prev[cur_match & wmask]) > limit - && --chain_length != 0) { - continue; - } else { - cont = 0; - } - } - break; - } while (1); - - if (!cont) - break; - - if (memcmp(match, &scan_start, sizeof(scan_start)) != 0) - continue; - - /* It is not necessary to compare scan[2] and match[2] since they are - * always equal when the other bytes match, given that the hash keys - * are equal and that HASH_BITS >= 8. Compare 2 bytes at a time at - * strstart+3, +5, ... up to strstart+257. We check for insufficient - * lookahead only every 4th comparison; the 128th check will be made - * at strstart+257. If MAX_MATCH-2 is not a multiple of 8, it is - * necessary to put more guard bytes at the end of the window, or - * to check more often for insufficient lookahead. - */ - scan += 2, match+=2; - Assert(*scan == *match, "match[2]?"); - do { - unsigned long sv, mv, xor; - - memcpy(&sv, scan, sizeof(sv)); - memcpy(&mv, match, sizeof(mv)); - - xor = sv ^ mv; - - if (xor) { - int match_byte = __builtin_ctzl(xor) / 8; - scan += match_byte; - break; - } else { - scan += sizeof(unsigned long); - match += sizeof(unsigned long); - } - } while (scan < strend); - - if (scan > strend) - scan = strend; - - Assert(scan <= window + (unsigned)(s->window_size-1), "wild scan"); - - len = MAX_MATCH - (int)(strend - scan); - scan = strend - MAX_MATCH; - - if (len > best_len) { - s->match_start = cur_match; - best_len = len; - if (len >= nice_match) - break; - memcpy(&scan_end, scan+best_len-1, sizeof(scan_end)); - } else { - /* - * The probability of finding a match later if we here - * is pretty low, so for performance it's best to - * outright stop here for the lower compression levels - */ - if (s->level < TRIGGER_LEVEL) - break; - } - } while ((cur_match = prev[cur_match & wmask]) > limit && --chain_length != 0); - - if ((unsigned int)best_len <= s->lookahead) - return (unsigned int)best_len; - return s->lookahead; -} -#endif diff --git a/libs/zlibng/memcopy.h b/libs/zlibng/memcopy.h deleted file mode 100644 index 301aa5f73..000000000 --- a/libs/zlibng/memcopy.h +++ /dev/null @@ -1,674 +0,0 @@ -/* memcopy.h -- inline functions to copy small data chunks. - * For conditions of distribution and use, see copyright notice in zlib.h - */ -#ifndef MEMCOPY_H_ - #define MEMCOPY_H_ - - #include "gzendian.h" - -/* Load 64 bits from IN and place the bytes at offset BITS in the result. */ -static inline uint64_t load_64_bits(const unsigned char *in, unsigned bits) { - uint64_t chunk; - memcpy(&chunk, in, sizeof(chunk)); - - #if BYTE_ORDER == LITTLE_ENDIAN - return chunk << bits; - #else - return ZSWAP64(chunk) << bits; - #endif -} - - #if (defined(__GNUC__) || defined(__clang__)) && defined(__ARM_NEON__) - #include -typedef uint8x16_t inffast_chunk_t; - #define INFFAST_CHUNKSIZE sizeof(inffast_chunk_t) - #endif - - #if defined(X86_SSE2) - #include -typedef __m128i inffast_chunk_t; - #define INFFAST_CHUNKSIZE sizeof(inffast_chunk_t) - #endif - - #ifdef INFFAST_CHUNKSIZE -/* - Ask the compiler to perform a wide, unaligned load with an machine - instruction appropriate for the inffast_chunk_t type. - */ -static inline inffast_chunk_t loadchunk(unsigned char const* s) { - inffast_chunk_t c; - memcpy(&c, s, sizeof(c)); - return c; -} - -/* - Ask the compiler to perform a wide, unaligned store with an machine - instruction appropriate for the inffast_chunk_t type. - */ -static inline void storechunk(unsigned char* d, inffast_chunk_t c) { - memcpy(d, &c, sizeof(c)); -} - -/* - Behave like memcpy, but assume that it's OK to overwrite at least - INFFAST_CHUNKSIZE bytes of output even if the length is shorter than this, - that the length is non-zero, and that `from` lags `out` by at least - INFFAST_CHUNKSIZE bytes (or that they don't overlap at all or simply that - the distance is less than the length of the copy). - - Aside from better memory bus utilisation, this means that short copies - (INFFAST_CHUNKSIZE bytes or fewer) will fall straight through the loop - without iteration, which will hopefully make the branch prediction more - reliable. - */ -static inline unsigned char* chunkcopy(unsigned char *out, unsigned char const *from, unsigned len) { - --len; - storechunk(out, loadchunk(from)); - out += (len % INFFAST_CHUNKSIZE) + 1; - from += (len % INFFAST_CHUNKSIZE) + 1; - len /= INFFAST_CHUNKSIZE; - while (len > 0) { - storechunk(out, loadchunk(from)); - out += INFFAST_CHUNKSIZE; - from += INFFAST_CHUNKSIZE; - --len; - } - return out; -} - -/* - Behave like chunkcopy, but avoid writing beyond of legal output. - */ -static inline unsigned char* chunkcopysafe(unsigned char *out, unsigned char const *from, unsigned len, - unsigned char *safe) { - if ((safe - out) < (ptrdiff_t)INFFAST_CHUNKSIZE) { - if (len & 8) { - memcpy(out, from, 8); - out += 8; - from += 8; - } - if (len & 4) { - memcpy(out, from, 4); - out += 4; - from += 4; - } - if (len & 2) { - memcpy(out, from, 2); - out += 2; - from += 2; - } - if (len & 1) { - *out++ = *from++; - } - return out; - } - return chunkcopy(out, from, len); -} - -/* - Perform short copies until distance can be rewritten as being at least - INFFAST_CHUNKSIZE. - - This assumes that it's OK to overwrite at least the first - 2*INFFAST_CHUNKSIZE bytes of output even if the copy is shorter than this. - This assumption holds because inflate_fast() starts every iteration with at - least 258 bytes of output space available (258 being the maximum length - output from a single token; see inflate_fast()'s assumptions below). - */ -static inline unsigned char* chunkunroll(unsigned char *out, unsigned *dist, unsigned *len) { - unsigned char const *from = out - *dist; - while (*dist < *len && *dist < INFFAST_CHUNKSIZE) { - storechunk(out, loadchunk(from)); - out += *dist; - *len -= *dist; - *dist += *dist; - } - return out; -} - -static inline inffast_chunk_t chunkmemset_1(unsigned char *from) { - #if defined(X86_SSE2) - int8_t c; - memcpy(&c, from, sizeof(c)); - return _mm_set1_epi8(c); - #elif defined(__ARM_NEON__) || defined(__ARM_NEON) - return vld1q_dup_u8(from); - #endif -} - -static inline inffast_chunk_t chunkmemset_2(unsigned char *from) { - int16_t c; - memcpy(&c, from, sizeof(c)); - #if defined(X86_SSE2) - return _mm_set1_epi16(c); - #elif defined(__ARM_NEON__) || defined(__ARM_NEON) - return vreinterpretq_u8_s16(vdupq_n_s16(c)); - #endif -} - -static inline inffast_chunk_t chunkmemset_4(unsigned char *from) { - int32_t c; - memcpy(&c, from, sizeof(c)); - #if defined(X86_SSE2) - return _mm_set1_epi32(c); - #elif defined(__ARM_NEON__) || defined(__ARM_NEON) - return vreinterpretq_u8_s32(vdupq_n_s32(c)); - #endif -} - -static inline inffast_chunk_t chunkmemset_8(unsigned char *from) { - #if defined(X86_SSE2) - int64_t c; - memcpy(&c, from, sizeof(c)); - return _mm_set1_epi64x(c); - #elif defined(__ARM_NEON__) || defined(__ARM_NEON) - return vcombine_u8(vld1_u8(from), vld1_u8(from)); - #endif -} - - #if defined(__ARM_NEON__) || defined(__ARM_NEON) -static inline unsigned char *chunkmemset_3(unsigned char *out, unsigned char *from, unsigned dist, unsigned len) { - uint8x8x3_t chunks; - unsigned sz = sizeof(chunks); - if (len < sz) { - out = chunkunroll(out, &dist, &len); - return chunkcopy(out, out - dist, len); - } - - /* Load 3 bytes 'a,b,c' from FROM and duplicate across all lanes: - chunks[0] = {a,a,a,a,a,a,a,a} - chunks[1] = {b,b,b,b,b,b,b,b} - chunks[2] = {c,c,c,c,c,c,c,c}. */ - chunks = vld3_dup_u8(from); - - unsigned rem = len % sz; - len -= rem; - while (len) { - /* Store "a,b,c, ..., a,b,c". */ - vst3_u8(out, chunks); - out += sz; - len -= sz; - } - - if (!rem) - return out; - - /* Last, deal with the case when LEN is not a multiple of SZ. */ - out = chunkunroll(out, &dist, &rem); - return chunkcopy(out, out - dist, rem); -} - #endif - - #if defined(__aarch64__) -static inline unsigned char *chunkmemset_6(unsigned char *out, unsigned char *from, unsigned dist, unsigned len) { - uint16x8x3_t chunks; - unsigned sz = sizeof(chunks); - if (len < sz) { - out = chunkunroll(out, &dist, &len); - return chunkcopy(out, out - dist, len); - } - - /* Load 6 bytes 'ab,cd,ef' from FROM and duplicate across all lanes: - chunks[0] = {ab,ab,ab,ab,ab,ab,ab,ab} - chunks[1] = {cd,cd,cd,cd,cd,cd,cd,cd} - chunks[2] = {ef,ef,ef,ef,ef,ef,ef,ef}. */ - chunks = vld3q_dup_u16((unsigned short *)from); - - unsigned rem = len % sz; - len -= rem; - while (len) { - /* Store "ab,cd,ef, ..., ab,cd,ef". */ - vst3q_u16((unsigned short *)out, chunks); - out += sz; - len -= sz; - } - - if (rem) - return out; - - /* Last, deal with the case when LEN is not a multiple of SZ. */ - out = chunkunroll(out, &dist, &rem); - return chunkcopy(out, out - dist, rem); -} - #endif - -/* Copy DIST bytes from OUT - DIST into OUT + DIST * k, for 0 <= k < LEN/DIST. Return OUT + LEN. */ -static inline unsigned char *chunkmemset(unsigned char *out, unsigned dist, unsigned len) { - Assert(len >= sizeof(uint64_t), "chunkmemset should be called on larger chunks"); - Assert(dist > 0, "cannot have a distance 0"); - - unsigned char *from = out - dist; - inffast_chunk_t chunk; - unsigned sz = sizeof(chunk); - if (len < sz) { - do { - *out++ = *from++; - --len; - } while (len != 0); - return out; - } - - switch (dist) { - case 1: { - chunk = chunkmemset_1(from); - break; - } - case 2: { - chunk = chunkmemset_2(from); - break; - } - #if defined(__ARM_NEON__) || defined(__ARM_NEON) - case 3: - return chunkmemset_3(out, from, dist, len); - #endif - case 4: { - chunk = chunkmemset_4(from); - break; - } - #if defined(__aarch64__) - case 6: - return chunkmemset_6(out, from, dist, len); - #endif - case 8: { - chunk = chunkmemset_8(from); - break; - } - case 16: - memcpy(&chunk, from, sz); - break; - - default: - out = chunkunroll(out, &dist, &len); - return chunkcopy(out, out - dist, len); - } - - unsigned rem = len % sz; - len -= rem; - while (len) { - memcpy(out, &chunk, sz); - out += sz; - len -= sz; - } - - /* Last, deal with the case when LEN is not a multiple of SZ. */ - if (rem) - memcpy(out, &chunk, rem); - out += rem; - return out; -} - -static inline unsigned char* chunkmemsetsafe(unsigned char *out, unsigned dist, unsigned len, unsigned left) { - if (left < (unsigned)(3 * INFFAST_CHUNKSIZE)) { - while (len > 0) { - *out = *(out - dist); - out++; - --len; - } - return out; - } - - return chunkmemset(out, dist, len); -} - - #else /* INFFAST_CHUNKSIZE */ - -static inline unsigned char *copy_1_bytes(unsigned char *out, unsigned char *from) { - *out++ = *from; - return out; -} - -static inline unsigned char *copy_2_bytes(unsigned char *out, unsigned char *from) { - uint16_t chunk; - unsigned sz = sizeof(chunk); - memcpy(&chunk, from, sz); - memcpy(out, &chunk, sz); - return out + sz; -} - -static inline unsigned char *copy_3_bytes(unsigned char *out, unsigned char *from) { - out = copy_1_bytes(out, from); - return copy_2_bytes(out, from + 1); -} - -static inline unsigned char *copy_4_bytes(unsigned char *out, unsigned char *from) { - uint32_t chunk; - unsigned sz = sizeof(chunk); - memcpy(&chunk, from, sz); - memcpy(out, &chunk, sz); - return out + sz; -} - -static inline unsigned char *copy_5_bytes(unsigned char *out, unsigned char *from) { - out = copy_1_bytes(out, from); - return copy_4_bytes(out, from + 1); -} - -static inline unsigned char *copy_6_bytes(unsigned char *out, unsigned char *from) { - out = copy_2_bytes(out, from); - return copy_4_bytes(out, from + 2); -} - -static inline unsigned char *copy_7_bytes(unsigned char *out, unsigned char *from) { - out = copy_3_bytes(out, from); - return copy_4_bytes(out, from + 3); -} - -static inline unsigned char *copy_8_bytes(unsigned char *out, unsigned char *from) { - uint64_t chunk; - unsigned sz = sizeof(chunk); - memcpy(&chunk, from, sz); - memcpy(out, &chunk, sz); - return out + sz; -} - -/* Copy LEN bytes (7 or fewer) from FROM into OUT. Return OUT + LEN. */ -static inline unsigned char *copy_bytes(unsigned char *out, unsigned char *from, unsigned len) { - Assert(len < 8, "copy_bytes should be called with less than 8 bytes"); - - #ifndef UNALIGNED_OK - while (len--) { - *out++ = *from++; - } - return out; - #else - switch (len) { - case 7: - return copy_7_bytes(out, from); - case 6: - return copy_6_bytes(out, from); - case 5: - return copy_5_bytes(out, from); - case 4: - return copy_4_bytes(out, from); - case 3: - return copy_3_bytes(out, from); - case 2: - return copy_2_bytes(out, from); - case 1: - return copy_1_bytes(out, from); - case 0: - return out; - default: - Assert(0, "should not happen"); - } - - return out; - #endif /* UNALIGNED_OK */ -} - -/* Copy LEN bytes (7 or fewer) from FROM into OUT. Return OUT + LEN. */ -static inline unsigned char *set_bytes(unsigned char *out, unsigned char *from, unsigned dist, unsigned len) { - Assert(len < 8, "set_bytes should be called with less than 8 bytes"); - - #ifndef UNALIGNED_OK - (void)dist; - while (len--) { - *out++ = *from++; - } - return out; - #else - if (dist >= len) - return copy_bytes(out, from, len); - - switch (dist) { - case 6: - Assert(len == 7, "len should be exactly 7"); - out = copy_6_bytes(out, from); - return copy_1_bytes(out, from); - - case 5: - Assert(len == 6 || len == 7, "len should be either 6 or 7"); - out = copy_5_bytes(out, from); - return copy_bytes(out, from, len - 5); - - case 4: - Assert(len == 5 || len == 6 || len == 7, "len should be either 5, 6, or 7"); - out = copy_4_bytes(out, from); - return copy_bytes(out, from, len - 4); - - case 3: - Assert(4 <= len && len <= 7, "len should be between 4 and 7"); - out = copy_3_bytes(out, from); - switch (len) { - case 7: - return copy_4_bytes(out, from); - case 6: - return copy_3_bytes(out, from); - case 5: - return copy_2_bytes(out, from); - case 4: - return copy_1_bytes(out, from); - default: - Assert(0, "should not happen"); - break; - } - - case 2: - Assert(3 <= len && len <= 7, "len should be between 3 and 7"); - out = copy_2_bytes(out, from); - switch (len) { - case 7: - out = copy_4_bytes(out, from); - out = copy_1_bytes(out, from); - return out; - case 6: - out = copy_4_bytes(out, from); - return out; - case 5: - out = copy_2_bytes(out, from); - out = copy_1_bytes(out, from); - return out; - case 4: - out = copy_2_bytes(out, from); - return out; - case 3: - out = copy_1_bytes(out, from); - return out; - default: - Assert(0, "should not happen"); - break; - } - - case 1: - Assert(2 <= len && len <= 7, "len should be between 2 and 7"); - unsigned char c = *from; - switch (len) { - case 7: - memset(out, c, 7); - return out + 7; - case 6: - memset(out, c, 6); - return out + 6; - case 5: - memset(out, c, 5); - return out + 5; - case 4: - memset(out, c, 4); - return out + 4; - case 3: - memset(out, c, 3); - return out + 3; - case 2: - memset(out, c, 2); - return out + 2; - default: - Assert(0, "should not happen"); - break; - } - } - return out; - #endif /* UNALIGNED_OK */ -} - -/* Byte by byte semantics: copy LEN bytes from OUT + DIST and write them to OUT. Return OUT + LEN. */ -static inline unsigned char *chunk_memcpy(unsigned char *out, unsigned char *from, unsigned len) { - unsigned sz = sizeof(uint64_t); - Assert(len >= sz, "chunk_memcpy should be called on larger chunks"); - - /* Copy a few bytes to make sure the loop below has a multiple of SZ bytes to be copied. */ - copy_8_bytes(out, from); - - unsigned rem = len % sz; - len /= sz; - out += rem; - from += rem; - - unsigned by8 = len % sz; - len -= by8; - switch (by8) { - case 7: - out = copy_8_bytes(out, from); - from += sz; - case 6: - out = copy_8_bytes(out, from); - from += sz; - case 5: - out = copy_8_bytes(out, from); - from += sz; - case 4: - out = copy_8_bytes(out, from); - from += sz; - case 3: - out = copy_8_bytes(out, from); - from += sz; - case 2: - out = copy_8_bytes(out, from); - from += sz; - case 1: - out = copy_8_bytes(out, from); - from += sz; - } - - while (len) { - out = copy_8_bytes(out, from); - from += sz; - out = copy_8_bytes(out, from); - from += sz; - out = copy_8_bytes(out, from); - from += sz; - out = copy_8_bytes(out, from); - from += sz; - out = copy_8_bytes(out, from); - from += sz; - out = copy_8_bytes(out, from); - from += sz; - out = copy_8_bytes(out, from); - from += sz; - out = copy_8_bytes(out, from); - from += sz; - - len -= 8; - } - - return out; -} - -/* Memset LEN bytes in OUT with the value at OUT - 1. Return OUT + LEN. */ -static inline unsigned char *byte_memset(unsigned char *out, unsigned len) { - unsigned sz = sizeof(uint64_t); - Assert(len >= sz, "byte_memset should be called on larger chunks"); - - unsigned char *from = out - 1; - unsigned char c = *from; - - /* First, deal with the case when LEN is not a multiple of SZ. */ - memset(out, c, sz); - unsigned rem = len % sz; - len /= sz; - out += rem; - - unsigned by8 = len % 8; - len -= by8; - switch (by8) { - case 7: - memset(out, c, sz); - out += sz; - case 6: - memset(out, c, sz); - out += sz; - case 5: - memset(out, c, sz); - out += sz; - case 4: - memset(out, c, sz); - out += sz; - case 3: - memset(out, c, sz); - out += sz; - case 2: - memset(out, c, sz); - out += sz; - case 1: - memset(out, c, sz); - out += sz; - } - - while (len) { - /* When sz is a constant, the compiler replaces __builtin_memset with an - inline version that does not incur a function call overhead. */ - memset(out, c, sz); - out += sz; - memset(out, c, sz); - out += sz; - memset(out, c, sz); - out += sz; - memset(out, c, sz); - out += sz; - memset(out, c, sz); - out += sz; - memset(out, c, sz); - out += sz; - memset(out, c, sz); - out += sz; - memset(out, c, sz); - out += sz; - len -= 8; - } - - return out; -} - -/* Copy DIST bytes from OUT - DIST into OUT + DIST * k, for 0 <= k < LEN/DIST. Return OUT + LEN. */ -static inline unsigned char *chunk_memset(unsigned char *out, unsigned char *from, unsigned dist, unsigned len) { - if (dist >= len) - return chunk_memcpy(out, from, len); - - Assert(len >= sizeof(uint64_t), "chunk_memset should be called on larger chunks"); - - /* Double up the size of the memset pattern until reaching the largest pattern of size less than SZ. */ - unsigned sz = sizeof(uint64_t); - while (dist < len && dist < sz) { - copy_8_bytes(out, from); - - out += dist; - len -= dist; - dist += dist; - - /* Make sure the next memcpy has at least SZ bytes to be copied. */ - if (len < sz) - /* Finish up byte by byte when there are not enough bytes left. */ - return set_bytes(out, from, dist, len); - } - - return chunk_memcpy(out, from, len); -} - -/* Byte by byte semantics: copy LEN bytes from FROM and write them to OUT. Return OUT + LEN. */ -static inline unsigned char *chunk_copy(unsigned char *out, unsigned char *from, int dist, unsigned len) { - if (len < sizeof(uint64_t)) { - if (dist > 0) - return set_bytes(out, from, dist, len); - - return copy_bytes(out, from, len); - } - - if (dist == 1) - return byte_memset(out, len); - - if (dist > 0) - return chunk_memset(out, from, dist, len); - - return chunk_memcpy(out, from, len); -} - #endif /* INFFAST_CHUNKSIZE */ -#endif /* MEMCOPY_H_ */ diff --git a/libs/zlibng/test/.gitignore b/libs/zlibng/test/.gitignore deleted file mode 100644 index 2c3af0a08..000000000 --- a/libs/zlibng/test/.gitignore +++ /dev/null @@ -1,2 +0,0 @@ -# ignore Makefiles; they're all automatically generated -Makefile diff --git a/libs/zlibng/test/CVE-2002-0059/test.gz b/libs/zlibng/test/CVE-2002-0059/test.gz deleted file mode 100644 index c5c3e184b1a90692f1c2dc729eb106476d231378..0000000000000000000000000000000000000000 GIT binary patch literal 0 HcmV?d00001 literal 4610 zcmb2|=3oE==C>CV8G$T;1@EN)&o6EfRlAUMpn;K@jYq;DVU#f%2%{-sG#8BKg3(+s vnhQpA!DucR%>|>mU^Ewu=7P~&Fq#WSbHQjX7-G5L2b -#include -#include -#include - -int main(void) { -gzFile f; -int ret; - -if(!(f = gzopen("/dev/null", "w"))) { -perror("/dev/null"); -exit(1); -} -ret = gzprintf(f, "%10240s", ""); -printf("gzprintf -> %d\n", ret); -ret = gzclose(f); -printf("gzclose -> %d [%d]\n", ret, errno); -exit(0); -} diff --git a/libs/zlibng/test/CVE-2004-0797/test.gz b/libs/zlibng/test/CVE-2004-0797/test.gz deleted file mode 100644 index 62dcf34bddbfe2c2e861c7929c21dc2f731dd000..0000000000000000000000000000000000000000 GIT binary patch literal 0 HcmV?d00001 literal 52 ocmb2|=3oE==C>CV85!7kBn%P`G%zxAfEl}iz!@q6kpjs906!lM=l}o! diff --git a/libs/zlibng/test/CVE-2005-1849/test.gz b/libs/zlibng/test/CVE-2005-1849/test.gz deleted file mode 100644 index b28f278263c0a3154faeb3c3dd7b083a3a593c8d..0000000000000000000000000000000000000000 GIT binary patch literal 0 HcmV?d00001 literal 52 kcmb2|=3oE==C@ZA85!7kBn%P`G%zxAz!-252m>Ss01LtkQvd(} diff --git a/libs/zlibng/test/CVE-2005-2096/test.gz b/libs/zlibng/test/CVE-2005-2096/test.gz deleted file mode 100644 index 11590aeab9ac844087776ab66eb2f5d2c9f6d013..0000000000000000000000000000000000000000 GIT binary patch literal 0 HcmV?d00001 literal 52 pcmb2|=3oE==C>CV84oltGP4!m+X /dev/null) - -all: oldtests cvetests $(COMPATTESTS) fuzzer - -oldtests: #set by ../configure -check_cross_dep: -ifneq (,$(QEMU_RUN)) -ifeq (,$(QEMU_VER)) - $(error "You need QEMU to run tests on non-native platform") -endif -endif - -ALL_SRC_FILES := $(wildcard ../*) - -# Only check the fuzzer when it is a stand-alone executable. -ifneq (,$(LIB_FUZZING_ENGINE)) -fuzzer: -else - ifeq (0,$(WITH_FUZZERS)) -fuzzer: - else -fuzzer: - @${QEMU_RUN} ../checksum_fuzzer$(EXE) $(ALL_SRC_FILES) && \ - ${QEMU_RUN} ../compress_fuzzer$(EXE) $(ALL_SRC_FILES) && \ - ${QEMU_RUN} ../example_small_fuzzer$(EXE) $(ALL_SRC_FILES) && \ - ${QEMU_RUN} ../example_large_fuzzer$(EXE) $(ALL_SRC_FILES) && \ - ${QEMU_RUN} ../example_flush_fuzzer$(EXE) $(ALL_SRC_FILES) && \ - ${QEMU_RUN} ../example_dict_fuzzer$(EXE) $(ALL_SRC_FILES) && \ - ${QEMU_RUN} ../minigzip_fuzzer$(EXE) $(ALL_SRC_FILES) - endif -endif - -teststatic: check_cross_dep - @TMPST=tmpst_$$; \ - if echo hello world | ${QEMU_RUN} ../minigzip$(EXE) | ${QEMU_RUN} ../minigzip$(EXE) -d && ${QEMU_RUN} ../example$(EXE) $$TMPST ; then \ - echo ' *** zlib test OK ***'; \ - else \ - echo ' *** zlib test FAILED ***'; exit 1; \ - fi - @rm -f tmpst_$$ - -testshared: check_cross_dep - @LD_LIBRARY_PATH=`pwd`/..:$(LD_LIBRARY_PATH) ; export LD_LIBRARY_PATH; \ - LD_LIBRARYN32_PATH=`pwd`/..:$(LD_LIBRARYN32_PATH) ; export LD_LIBRARYN32_PATH; \ - DYLD_LIBRARY_PATH=`pwd`/..:$(DYLD_LIBRARY_PATH) ; export DYLD_LIBRARY_PATH; \ - SHLIB_PATH=`pwd`/..:$(SHLIB_PATH) ; export SHLIB_PATH; \ - TMPSH=tmpsh_$$; \ - if echo hello world | ${QEMU_RUN} ../minigzipsh$(EXE) | ${QEMU_RUN} ../minigzipsh$(EXE) -d && ${QEMU_RUN} ../examplesh$(EXE) $$TMPSH; then \ - echo ' *** zlib shared test OK ***'; \ - else \ - echo ' *** zlib shared test FAILED ***'; exit 1; \ - fi - @rm -f tmpsh_$$ - -test64: check_cross_dep - @TMP64=tmp64_$$; \ - if echo hello world | ${QEMU_RUN} ../minigzip64$(EXE) | ${QEMU_RUN} ../minigzip64$(EXE) -d && ${QEMU_RUN} ../example64$(EXE) $$TMP64; then \ - echo ' *** zlib 64-bit test OK ***'; \ - else \ - echo ' *** zlib 64-bit test FAILED ***'; exit 1; \ - fi - @rm -f tmp64_$$ - -cvetests: testCVEinputs - -# Tests requiring zlib-ng to be built with --zlib-compat -compattests: testCVE-2003-0107 - -testCVEinputs: check_cross_dep - @EXE=$(EXE) QEMU_RUN="${QEMU_RUN}" $(SRCDIR)/testCVEinputs.sh - -testCVE-2003-0107: CVE-2003-0107$(EXE) check_cross_dep - @if ${QEMU_RUN} ./CVE-2003-0107$(EXE); then \ - echo ' *** zlib not vulnerable to CVE-2003-0107 ***'; \ - else \ - echo ' *** zlib VULNERABLE to CVE-2003-0107 ***'; exit 1; \ - fi - -CVE-2003-0107.o: $(SRCDIR)/CVE-2003-0107.c - $(CC) $(CFLAGS) -I.. -I$(SRCTOP) -c -o $@ $(SRCDIR)/CVE-2003-0107.c - -CVE-2003-0107$(EXE): CVE-2003-0107.o - $(CC) $(CFLAGS) -o $@ CVE-2003-0107.o $(TEST_LDFLAGS) - - -clean: - rm -f *.o *.gcda *.gcno *.gcov - rm -f CVE-2003-0107$(EXE) - -distclean: - rm -f Makefile diff --git a/libs/zlibng/test/example.c b/libs/zlibng/test/example.c deleted file mode 100644 index 964a380d7..000000000 --- a/libs/zlibng/test/example.c +++ /dev/null @@ -1,552 +0,0 @@ -/* example.c -- usage example of the zlib compression library - * Copyright (C) 1995-2006, 2011, 2016 Jean-loup Gailly - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* @(#) $Id$ */ - -#include "zbuild.h" -#ifdef ZLIB_COMPAT -# include "zlib.h" -#else -# include "zlib-ng.h" -#endif - -#include - -#include -#include -#include - -#define TESTFILE "foo.gz" - -#define CHECK_ERR(err, msg) { \ - if (err != Z_OK) { \ - fprintf(stderr, "%s error: %d\n", msg, err); \ - exit(1); \ - } \ -} - -static const char hello[] = "hello, hello!"; -/* "hello world" would be more standard, but the repeated "hello" - * stresses the compression code better, sorry... - */ - -static const char dictionary[] = "hello"; -static unsigned long dictId = 0; /* Adler32 value of the dictionary */ - - -void test_compress (unsigned char *compr, z_size_t comprLen,unsigned char *uncompr, z_size_t uncomprLen); -void test_gzio (const char *fname, unsigned char *uncompr, z_size_t uncomprLen); -void test_deflate (unsigned char *compr, size_t comprLen); -void test_inflate (unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen); -void test_large_deflate (unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen); -void test_large_inflate (unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen); -void test_flush (unsigned char *compr, z_size_t *comprLen); -void test_sync (unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen); -void test_dict_deflate (unsigned char *compr, size_t comprLen); -void test_dict_inflate (unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen); -int main (int argc, char *argv[]); - - -static alloc_func zalloc = NULL; -static free_func zfree = NULL; - -/* =========================================================================== - * Test compress() and uncompress() - */ -void test_compress(unsigned char *compr, z_size_t comprLen, unsigned char *uncompr, z_size_t uncomprLen) -{ - int err; - size_t len = strlen(hello)+1; - - err = PREFIX(compress)(compr, &comprLen, (const unsigned char*)hello, (z_size_t)len); - CHECK_ERR(err, "compress"); - - strcpy((char*)uncompr, "garbage"); - - err = PREFIX(uncompress)(uncompr, &uncomprLen, compr, comprLen); - CHECK_ERR(err, "uncompress"); - - if (strcmp((char*)uncompr, hello)) { - fprintf(stderr, "bad uncompress\n"); - exit(1); - } else { - printf("uncompress(): %s\n", (char *)uncompr); - } -} - -/* =========================================================================== - * Test read/write of .gz files - */ -void test_gzio(const char *fname, unsigned char *uncompr, z_size_t uncomprLen) -{ -#ifdef NO_GZCOMPRESS - fprintf(stderr, "NO_GZCOMPRESS -- gz* functions cannot compress\n"); -#else - int err; - int len = (int)strlen(hello)+1; - gzFile file; - z_off_t pos; - - file = PREFIX(gzopen)(fname, "wb"); - if (file == NULL) { - fprintf(stderr, "gzopen error\n"); - exit(1); - } - PREFIX(gzputc)(file, 'h'); - if (PREFIX(gzputs)(file, "ello") != 4) { - fprintf(stderr, "gzputs err: %s\n", PREFIX(gzerror)(file, &err)); - exit(1); - } - if (PREFIX(gzprintf)(file, ", %s!", "hello") != 8) { - fprintf(stderr, "gzprintf err: %s\n", PREFIX(gzerror)(file, &err)); - exit(1); - } - PREFIX(gzseek)(file, 1L, SEEK_CUR); /* add one zero byte */ - PREFIX(gzclose)(file); - - file = PREFIX(gzopen)(fname, "rb"); - if (file == NULL) { - fprintf(stderr, "gzopen error\n"); - exit(1); - } - strcpy((char*)uncompr, "garbage"); - - if (PREFIX(gzread)(file, uncompr, (unsigned)uncomprLen) != len) { - fprintf(stderr, "gzread err: %s\n", PREFIX(gzerror)(file, &err)); - exit(1); - } - if (strcmp((char*)uncompr, hello)) { - fprintf(stderr, "bad gzread: %s\n", (char*)uncompr); - exit(1); - } else { - printf("gzread(): %s\n", (char*)uncompr); - } - - pos = PREFIX(gzseek)(file, -8L, SEEK_CUR); - if (pos != 6 || PREFIX(gztell)(file) != pos) { - fprintf(stderr, "gzseek error, pos=%ld, gztell=%ld\n", - (long)pos, (long)PREFIX(gztell)(file)); - exit(1); - } - - if (PREFIX(gzgetc)(file) != ' ') { - fprintf(stderr, "gzgetc error\n"); - exit(1); - } - - if (PREFIX(gzungetc)(' ', file) != ' ') { - fprintf(stderr, "gzungetc error\n"); - exit(1); - } - - PREFIX(gzgets)(file, (char*)uncompr, (int)uncomprLen); - if (strlen((char*)uncompr) != 7) { /* " hello!" */ - fprintf(stderr, "gzgets err after gzseek: %s\n", PREFIX(gzerror)(file, &err)); - exit(1); - } - if (strcmp((char*)uncompr, hello + 6)) { - fprintf(stderr, "bad gzgets after gzseek\n"); - exit(1); - } else { - printf("gzgets() after gzseek: %s\n", (char*)uncompr); - } - - PREFIX(gzclose)(file); -#endif -} - -/* =========================================================================== - * Test deflate() with small buffers - */ -void test_deflate(unsigned char *compr, size_t comprLen) -{ - PREFIX3(stream) c_stream; /* compression stream */ - int err; - unsigned long len = (unsigned long)strlen(hello)+1; - - c_stream.zalloc = zalloc; - c_stream.zfree = zfree; - c_stream.opaque = (void *)0; - c_stream.total_in = 0; - c_stream.total_out = 0; - - err = PREFIX(deflateInit)(&c_stream, Z_DEFAULT_COMPRESSION); - CHECK_ERR(err, "deflateInit"); - - c_stream.next_in = (const unsigned char *)hello; - c_stream.next_out = compr; - - while (c_stream.total_in != len && c_stream.total_out < comprLen) { - c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */ - err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH); - CHECK_ERR(err, "deflate"); - } - /* Finish the stream, still forcing small buffers: */ - for (;;) { - c_stream.avail_out = 1; - err = PREFIX(deflate)(&c_stream, Z_FINISH); - if (err == Z_STREAM_END) break; - CHECK_ERR(err, "deflate"); - } - - err = PREFIX(deflateEnd)(&c_stream); - CHECK_ERR(err, "deflateEnd"); -} - -/* =========================================================================== - * Test inflate() with small buffers - */ -void test_inflate(unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen) -{ - int err; - PREFIX3(stream) d_stream; /* decompression stream */ - - strcpy((char*)uncompr, "garbage"); - - d_stream.zalloc = zalloc; - d_stream.zfree = zfree; - d_stream.opaque = (void *)0; - - d_stream.next_in = compr; - d_stream.avail_in = 0; - d_stream.next_out = uncompr; - d_stream.total_in = 0; - d_stream.total_out = 0; - - err = PREFIX(inflateInit)(&d_stream); - CHECK_ERR(err, "inflateInit"); - - while (d_stream.total_out < uncomprLen && d_stream.total_in < comprLen) { - d_stream.avail_in = d_stream.avail_out = 1; /* force small buffers */ - err = PREFIX(inflate)(&d_stream, Z_NO_FLUSH); - if (err == Z_STREAM_END) break; - CHECK_ERR(err, "inflate"); - } - - err = PREFIX(inflateEnd)(&d_stream); - CHECK_ERR(err, "inflateEnd"); - - if (strcmp((char*)uncompr, hello)) { - fprintf(stderr, "bad inflate\n"); - exit(1); - } else { - printf("inflate(): %s\n", (char *)uncompr); - } -} - -static unsigned int diff; - -/* =========================================================================== - * Test deflate() with large buffers and dynamic change of compression level - */ -void test_large_deflate(unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen) -{ - PREFIX3(stream) c_stream; /* compression stream */ - int err; - - c_stream.zalloc = zalloc; - c_stream.zfree = zfree; - c_stream.opaque = (void *)0; - - err = PREFIX(deflateInit)(&c_stream, Z_BEST_SPEED); - CHECK_ERR(err, "deflateInit"); - - c_stream.next_out = compr; - c_stream.avail_out = (unsigned int)comprLen; - - /* At this point, uncompr is still mostly zeroes, so it should compress - * very well: - */ - c_stream.next_in = uncompr; - c_stream.avail_in = (unsigned int)uncomprLen; - err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH); - CHECK_ERR(err, "deflate"); - if (c_stream.avail_in != 0) { - fprintf(stderr, "deflate not greedy\n"); - exit(1); - } - - /* Feed in already compressed data and switch to no compression: */ - PREFIX(deflateParams)(&c_stream, Z_NO_COMPRESSION, Z_DEFAULT_STRATEGY); - c_stream.next_in = compr; - diff = (unsigned int)(c_stream.next_out - compr); - c_stream.avail_in = diff; - err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH); - CHECK_ERR(err, "deflate"); - - /* Switch back to compressing mode: */ - PREFIX(deflateParams)(&c_stream, Z_BEST_COMPRESSION, Z_FILTERED); - c_stream.next_in = uncompr; - c_stream.avail_in = (unsigned int)uncomprLen; - err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH); - CHECK_ERR(err, "deflate"); - - err = PREFIX(deflate)(&c_stream, Z_FINISH); - if (err != Z_STREAM_END) { - fprintf(stderr, "deflate should report Z_STREAM_END\n"); - exit(1); - } - err = PREFIX(deflateEnd)(&c_stream); - CHECK_ERR(err, "deflateEnd"); -} - -/* =========================================================================== - * Test inflate() with large buffers - */ -void test_large_inflate(unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen) -{ - int err; - PREFIX3(stream) d_stream; /* decompression stream */ - - strcpy((char*)uncompr, "garbage"); - - d_stream.zalloc = zalloc; - d_stream.zfree = zfree; - d_stream.opaque = (void *)0; - - d_stream.next_in = compr; - d_stream.avail_in = (unsigned int)comprLen; - d_stream.total_in = 0; - d_stream.total_out = 0; - - err = PREFIX(inflateInit)(&d_stream); - CHECK_ERR(err, "inflateInit"); - - for (;;) { - d_stream.next_out = uncompr; /* discard the output */ - d_stream.avail_out = (unsigned int)uncomprLen; - err = PREFIX(inflate)(&d_stream, Z_NO_FLUSH); - if (err == Z_STREAM_END) break; - CHECK_ERR(err, "large inflate"); - } - - err = PREFIX(inflateEnd)(&d_stream); - CHECK_ERR(err, "inflateEnd"); - - if (d_stream.total_out != 2*uncomprLen + diff) { - fprintf(stderr, "bad large inflate: %zu\n", d_stream.total_out); - exit(1); - } else { - printf("large_inflate(): OK\n"); - } -} - -/* =========================================================================== - * Test deflate() with full flush - */ -void test_flush(unsigned char *compr, z_size_t *comprLen) -{ - PREFIX3(stream) c_stream; /* compression stream */ - int err; - unsigned int len = (unsigned int)strlen(hello)+1; - - c_stream.zalloc = zalloc; - c_stream.zfree = zfree; - c_stream.opaque = (void *)0; - - err = PREFIX(deflateInit)(&c_stream, Z_DEFAULT_COMPRESSION); - CHECK_ERR(err, "deflateInit"); - - c_stream.next_in = (const unsigned char *)hello; - c_stream.next_out = compr; - c_stream.avail_in = 3; - c_stream.avail_out = (unsigned int)*comprLen; - err = PREFIX(deflate)(&c_stream, Z_FULL_FLUSH); - CHECK_ERR(err, "deflate"); - - compr[3]++; /* force an error in first compressed block */ - c_stream.avail_in = len - 3; - - err = PREFIX(deflate)(&c_stream, Z_FINISH); - if (err != Z_STREAM_END) { - CHECK_ERR(err, "deflate"); - } - err = PREFIX(deflateEnd)(&c_stream); - CHECK_ERR(err, "deflateEnd"); - - *comprLen = (z_size_t)c_stream.total_out; -} - -/* =========================================================================== - * Test inflateSync() - */ -void test_sync(unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen) -{ - int err; - PREFIX3(stream) d_stream; /* decompression stream */ - - strcpy((char*)uncompr, "garbage"); - - d_stream.zalloc = zalloc; - d_stream.zfree = zfree; - d_stream.opaque = (void *)0; - - d_stream.next_in = compr; - d_stream.avail_in = 2; /* just read the zlib header */ - - err = PREFIX(inflateInit)(&d_stream); - CHECK_ERR(err, "inflateInit"); - - d_stream.next_out = uncompr; - d_stream.avail_out = (unsigned int)uncomprLen; - - err = PREFIX(inflate)(&d_stream, Z_NO_FLUSH); - CHECK_ERR(err, "inflate"); - - d_stream.avail_in = (unsigned int)comprLen-2; /* read all compressed data */ - err = PREFIX(inflateSync)(&d_stream); /* but skip the damaged part */ - CHECK_ERR(err, "inflateSync"); - - err = PREFIX(inflate)(&d_stream, Z_FINISH); - if (err != Z_DATA_ERROR) { - fprintf(stderr, "inflate should report DATA_ERROR\n"); - /* Because of incorrect adler32 */ - exit(1); - } - err = PREFIX(inflateEnd)(&d_stream); - CHECK_ERR(err, "inflateEnd"); - - printf("after inflateSync(): hel%s\n", (char *)uncompr); -} - -/* =========================================================================== - * Test deflate() with preset dictionary - */ -void test_dict_deflate(unsigned char *compr, size_t comprLen) -{ - PREFIX3(stream) c_stream; /* compression stream */ - int err; - - c_stream.zalloc = zalloc; - c_stream.zfree = zfree; - c_stream.opaque = (void *)0; - c_stream.adler = 0; - - err = PREFIX(deflateInit)(&c_stream, Z_BEST_COMPRESSION); - CHECK_ERR(err, "deflateInit"); - - err = PREFIX(deflateSetDictionary)(&c_stream, - (const unsigned char*)dictionary, (int)sizeof(dictionary)); - CHECK_ERR(err, "deflateSetDictionary"); - - dictId = c_stream.adler; - c_stream.next_out = compr; - c_stream.avail_out = (unsigned int)comprLen; - - c_stream.next_in = (const unsigned char *)hello; - c_stream.avail_in = (unsigned int)strlen(hello)+1; - - err = PREFIX(deflate)(&c_stream, Z_FINISH); - if (err != Z_STREAM_END) { - fprintf(stderr, "deflate should report Z_STREAM_END\n"); - exit(1); - } - err = PREFIX(deflateEnd)(&c_stream); - CHECK_ERR(err, "deflateEnd"); -} - -/* =========================================================================== - * Test inflate() with a preset dictionary - */ -void test_dict_inflate(unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen) -{ - int err; - PREFIX3(stream) d_stream; /* decompression stream */ - - strcpy((char*)uncompr, "garbage garbage garbage"); - - d_stream.zalloc = zalloc; - d_stream.zfree = zfree; - d_stream.opaque = (void *)0; - d_stream.adler = 0; - d_stream.next_in = compr; - d_stream.avail_in = (unsigned int)comprLen; - - err = PREFIX(inflateInit)(&d_stream); - CHECK_ERR(err, "inflateInit"); - - d_stream.next_out = uncompr; - d_stream.avail_out = (unsigned int)uncomprLen; - - for (;;) { - err = PREFIX(inflate)(&d_stream, Z_NO_FLUSH); - if (err == Z_STREAM_END) break; - if (err == Z_NEED_DICT) { - if (d_stream.adler != dictId) { - fprintf(stderr, "unexpected dictionary"); - exit(1); - } - err = PREFIX(inflateSetDictionary)(&d_stream, (const unsigned char*)dictionary, - (int)sizeof(dictionary)); - } - CHECK_ERR(err, "inflate with dict"); - } - - err = PREFIX(inflateEnd)(&d_stream); - CHECK_ERR(err, "inflateEnd"); - - if (strncmp((char*)uncompr, hello, sizeof(hello))) { - fprintf(stderr, "bad inflate with dict\n"); - exit(1); - } else { - printf("inflate with dictionary: %s\n", (char *)uncompr); - } -} - -/* =========================================================================== - * Usage: example [output.gz [input.gz]] - */ - -int main(int argc, char *argv[]) -{ - unsigned char *compr, *uncompr; - z_size_t comprLen = 10000*sizeof(int); /* don't overflow on MSDOS */ - z_size_t uncomprLen = comprLen; - static const char* myVersion = PREFIX2(VERSION); - - if (zVersion()[0] != myVersion[0]) { - fprintf(stderr, "incompatible zlib version\n"); - exit(1); - - } else if (strcmp(zVersion(), PREFIX2(VERSION)) != 0) { - fprintf(stderr, "warning: different zlib version\n"); - } - - printf("zlib version %s = 0x%04x, compile flags = 0x%lx\n", - PREFIX2(VERSION), PREFIX2(VERNUM), PREFIX(zlibCompileFlags)()); - - compr = (unsigned char*)calloc((unsigned int)comprLen, 1); - uncompr = (unsigned char*)calloc((unsigned int)uncomprLen, 1); - /* compr and uncompr are cleared to avoid reading uninitialized - * data and to ensure that uncompr compresses well. - */ - if (compr == NULL || uncompr == NULL) { - printf("out of memory\n"); - exit(1); - } - - test_compress(compr, comprLen, uncompr, uncomprLen); - - test_gzio((argc > 1 ? argv[1] : TESTFILE), - uncompr, uncomprLen); - - test_deflate(compr, comprLen); - test_inflate(compr, comprLen, uncompr, uncomprLen); - - test_large_deflate(compr, comprLen, uncompr, uncomprLen); - test_large_inflate(compr, comprLen, uncompr, uncomprLen); - - test_flush(compr, &comprLen); - test_sync(compr, comprLen, uncompr, uncomprLen); - comprLen = uncomprLen; - - test_dict_deflate(compr, comprLen); - test_dict_inflate(compr, comprLen, uncompr, uncomprLen); - - free(compr); - free(uncompr); - - return 0; -} diff --git a/libs/zlibng/test/fuzz/checksum_fuzzer.c b/libs/zlibng/test/fuzz/checksum_fuzzer.c deleted file mode 100644 index 10fc138fb..000000000 --- a/libs/zlibng/test/fuzz/checksum_fuzzer.c +++ /dev/null @@ -1,73 +0,0 @@ -#include -#include -#include -#include -#include -#include -#include - -#include "zbuild.h" -#ifdef ZLIB_COMPAT -# include "zlib.h" -#else -# include "zlib-ng.h" -#endif - -int LLVMFuzzerTestOneInput(const uint8_t *data, size_t dataLen) { - uint32_t crc0 = PREFIX(crc32)(0L, NULL, 0); - uint32_t crc1 = crc0; - uint32_t crc2 = crc0; - uint32_t adler0 = PREFIX(adler32)(0L, NULL, 0); - uint32_t adler1 = adler0; - uint32_t adler2 = adler0; - /* Checksum with a buffer of size equal to the first byte in the input. */ - uint32_t buffSize = data[0]; - uint32_t offset = 0; - uint32_t op[32]; - - /* Discard inputs larger than 1Mb. */ - static size_t kMaxSize = 1024 * 1024; - if (dataLen < 1 || dataLen > kMaxSize) - return 0; - - /* Make sure the buffer has at least a byte. */ - if (buffSize == 0) - ++buffSize; - - /* CRC32 */ - PREFIX(crc32_combine_gen)(op, buffSize); - for (offset = 0; offset + buffSize <= dataLen; offset += buffSize) { - uint32_t crc3 = PREFIX(crc32_z)(crc0, data + offset, buffSize); - uint32_t crc4 = PREFIX(crc32_combine_op)(crc1, crc3, op); - crc1 = PREFIX(crc32_z)(crc1, data + offset, buffSize); - assert(crc1 == crc4); - } - crc1 = PREFIX(crc32_z)(crc1, data + offset, dataLen % buffSize); - - crc2 = PREFIX(crc32_z)(crc2, data, dataLen); - - assert(crc1 == crc2); - assert(PREFIX(crc32_combine)(crc1, crc2, dataLen) == - PREFIX(crc32_combine)(crc1, crc1, dataLen)); - - /* Fast CRC32 combine. */ - PREFIX(crc32_combine_gen)(op, dataLen); - assert(PREFIX(crc32_combine_op)(crc1, crc2, op) == - PREFIX(crc32_combine_op)(crc2, crc1, op)); - assert(PREFIX(crc32_combine)(crc1, crc2, dataLen) == - PREFIX(crc32_combine_op)(crc2, crc1, op)); - - /* Adler32 */ - for (offset = 0; offset + buffSize <= dataLen; offset += buffSize) - adler1 = PREFIX(adler32_z)(adler1, data + offset, buffSize); - adler1 = PREFIX(adler32_z)(adler1, data + offset, dataLen % buffSize); - - adler2 = PREFIX(adler32_z)(adler2, data, dataLen); - - assert(adler1 == adler2); - assert(PREFIX(adler32_combine)(adler1, adler2, dataLen) == - PREFIX(adler32_combine)(adler1, adler1, dataLen)); - - /* This function must return 0. */ - return 0; -} diff --git a/libs/zlibng/test/fuzz/compress_fuzzer.c b/libs/zlibng/test/fuzz/compress_fuzzer.c deleted file mode 100644 index e2ccf7177..000000000 --- a/libs/zlibng/test/fuzz/compress_fuzzer.c +++ /dev/null @@ -1,87 +0,0 @@ -#include -#include -#include -#include -#include -#include -#include - -#include "zbuild.h" -#ifdef ZLIB_COMPAT -# include "zlib.h" -#else -# include "zlib-ng.h" -#endif - -static const uint8_t *data; -static size_t dataLen; - -static void check_compress_level(uint8_t *compr, size_t comprLen, - uint8_t *uncompr, size_t uncomprLen, - int level) { - PREFIX(compress2)(compr, &comprLen, data, dataLen, level); - PREFIX(uncompress)(uncompr, &uncomprLen, compr, comprLen); - - /* Make sure compress + uncompress gives back the input data. */ - assert(dataLen == uncomprLen); - assert(0 == memcmp(data, uncompr, dataLen)); -} - -#define put_byte(s, i, c) {s[i] = (unsigned char)(c);} - -static void write_zlib_header(uint8_t *s) { - unsigned level_flags = 0; /* compression level (0..3) */ - unsigned w_bits = 8; /* window size log2(w_size) (8..16) */ - unsigned int header = (Z_DEFLATED + ((w_bits-8)<<4)) << 8; - header |= (level_flags << 6); - - header += 31 - (header % 31); - - /* s is guaranteed to be longer than 2 bytes. */ - put_byte(s, 0, (unsigned char)(header >> 8)); - put_byte(s, 1, (unsigned char)(header & 0xff)); -} - -static void check_decompress(uint8_t *compr, size_t comprLen) { - /* We need to write a valid zlib header of size two bytes. Copy the input data - in a larger buffer. Do not modify the input data to avoid libFuzzer error: - fuzz target overwrites its const input. */ - size_t copyLen = dataLen + 2; - uint8_t *copy = (uint8_t *)malloc(copyLen); - memcpy(copy + 2, data, dataLen); - write_zlib_header(copy); - - PREFIX(uncompress)(compr, &comprLen, copy, copyLen); - free(copy); -} - -int LLVMFuzzerTestOneInput(const uint8_t *d, size_t size) { - /* compressBound does not provide enough space for low compression levels. */ - size_t comprLen = 100 + 2 * PREFIX(compressBound)(size); - size_t uncomprLen = size; - uint8_t *compr, *uncompr; - - /* Discard inputs larger than 1Mb. */ - static size_t kMaxSize = 1024 * 1024; - - if (size < 1 || size > kMaxSize) - return 0; - - data = d; - dataLen = size; - compr = (uint8_t *)calloc(1, comprLen); - uncompr = (uint8_t *)calloc(1, uncomprLen); - - check_compress_level(compr, comprLen, uncompr, uncomprLen, 1); - check_compress_level(compr, comprLen, uncompr, uncomprLen, 3); - check_compress_level(compr, comprLen, uncompr, uncomprLen, 6); - check_compress_level(compr, comprLen, uncompr, uncomprLen, 7); - - check_decompress(compr, comprLen); - - free(compr); - free(uncompr); - - /* This function must return 0. */ - return 0; -} diff --git a/libs/zlibng/test/fuzz/example_dict_fuzzer.c b/libs/zlibng/test/fuzz/example_dict_fuzzer.c deleted file mode 100644 index b19101173..000000000 --- a/libs/zlibng/test/fuzz/example_dict_fuzzer.c +++ /dev/null @@ -1,170 +0,0 @@ -#include -#include -#include -#include -#include -#include -#include - -#include "zbuild.h" -#ifdef ZLIB_COMPAT -# include "zlib.h" -#else -# include "zlib-ng.h" -#endif - -#define CHECK_ERR(err, msg) { \ - if (err != Z_OK) { \ - fprintf(stderr, "%s error: %d\n", msg, err); \ - exit(1); \ - } \ -} - -static const uint8_t *data; -static size_t dataLen; -static alloc_func zalloc = NULL; -static free_func zfree = NULL; -static size_t dictionaryLen = 0; -static unsigned long dictId; /* Adler32 value of the dictionary */ - -/* =========================================================================== - * Test deflate() with preset dictionary - */ -void test_dict_deflate(unsigned char **compr, size_t *comprLen) -{ - PREFIX3(stream) c_stream; /* compression stream */ - int err; - int level = data[0] % 11 - 1; /* [-1..9] - compression levels - #define Z_NO_COMPRESSION 0 - #define Z_BEST_SPEED 1 - #define Z_BEST_COMPRESSION 9 - #define Z_DEFAULT_COMPRESSION (-1) */ - - int method = Z_DEFLATED; /* The deflate compression method (the only one - supported in this version) */ - int windowBits = 8 + data[0] % 8; /* The windowBits parameter is the base - two logarithm of the window size (the size of the history buffer). It - should be in the range 8..15 for this version of the library. */ - int memLevel = 1 + data[0] % 9; /* memLevel=1 uses minimum memory but is - slow and reduces compression ratio; memLevel=9 uses maximum memory for - optimal speed. */ - int strategy = data[0] % 5; /* [0..4] - #define Z_FILTERED 1 - #define Z_HUFFMAN_ONLY 2 - #define Z_RLE 3 - #define Z_FIXED 4 - #define Z_DEFAULT_STRATEGY 0 */ - - /* deflate would fail for no-compression or for speed levels. */ - if (level == 0 || level == 1) - level = -1; - - c_stream.zalloc = zalloc; - c_stream.zfree = zfree; - c_stream.opaque = (void *)0; - - err = PREFIX(deflateInit2)(&c_stream, level, method, windowBits, memLevel, - strategy); - CHECK_ERR(err, "deflateInit"); - - err = PREFIX(deflateSetDictionary)( - &c_stream, (const unsigned char *)data, dictionaryLen); - CHECK_ERR(err, "deflateSetDictionary"); - - /* deflateBound does not provide enough space for low compression levels. */ - *comprLen = 100 + 2 * PREFIX(deflateBound)(&c_stream, dataLen); - *compr = (uint8_t *)calloc(1, *comprLen); - - dictId = c_stream.adler; - c_stream.next_out = *compr; - c_stream.avail_out = (unsigned int)(*comprLen); - - c_stream.next_in = data; - c_stream.avail_in = dataLen; - - err = PREFIX(deflate)(&c_stream, Z_FINISH); - if (err != Z_STREAM_END) { - fprintf(stderr, "deflate dict should report Z_STREAM_END\n"); - exit(1); - } - err = PREFIX(deflateEnd)(&c_stream); - CHECK_ERR(err, "deflateEnd"); -} - -/* =========================================================================== - * Test inflate() with a preset dictionary - */ -void test_dict_inflate(unsigned char *compr, size_t comprLen) { - int err; - PREFIX3(stream) d_stream; /* decompression stream */ - unsigned char *uncompr; - - d_stream.zalloc = zalloc; - d_stream.zfree = zfree; - d_stream.opaque = (void *)0; - - d_stream.next_in = compr; - d_stream.avail_in = (unsigned int)comprLen; - - err = PREFIX(inflateInit)(&d_stream); - CHECK_ERR(err, "inflateInit"); - - uncompr = (uint8_t *)calloc(1, dataLen); - d_stream.next_out = uncompr; - d_stream.avail_out = (unsigned int)dataLen; - - for (;;) { - err = PREFIX(inflate)(&d_stream, Z_NO_FLUSH); - if (err == Z_STREAM_END) - break; - if (err == Z_NEED_DICT) { - if (d_stream.adler != dictId) { - fprintf(stderr, "unexpected dictionary"); - exit(1); - } - err = PREFIX(inflateSetDictionary)( - &d_stream, (const unsigned char *)data, dictionaryLen); - } - CHECK_ERR(err, "inflate with dict"); - } - - err = PREFIX(inflateEnd)(&d_stream); - CHECK_ERR(err, "inflateEnd"); - - if (memcmp(uncompr, data, dataLen)) { - fprintf(stderr, "bad inflate with dict\n"); - exit(1); - } - - free(uncompr); -} - -int LLVMFuzzerTestOneInput(const uint8_t *d, size_t size) { - size_t comprLen = 0; - uint8_t *compr; - - /* Discard inputs larger than 100Kb. */ - static size_t kMaxSize = 100 * 1024; - - if (size < 1 || size > kMaxSize) - return 0; - - data = d; - dataLen = size; - - /* Set up the contents of the dictionary. The size of the dictionary is - intentionally selected to be of unusual size. To help cover more corner - cases, the size of the dictionary is read from the input data. */ - dictionaryLen = data[0]; - if (dictionaryLen > dataLen) - dictionaryLen = dataLen; - - test_dict_deflate(&compr, &comprLen); - test_dict_inflate(compr, comprLen); - - free(compr); - - /* This function must return 0. */ - return 0; -} diff --git a/libs/zlibng/test/fuzz/example_flush_fuzzer.c b/libs/zlibng/test/fuzz/example_flush_fuzzer.c deleted file mode 100644 index f9f2d3646..000000000 --- a/libs/zlibng/test/fuzz/example_flush_fuzzer.c +++ /dev/null @@ -1,126 +0,0 @@ -#include -#include -#include -#include -#include -#include -#include - -#include "zbuild.h" -#ifdef ZLIB_COMPAT -# include "zlib.h" -#else -# include "zlib-ng.h" -#endif - -#define CHECK_ERR(err, msg) { \ - if (err != Z_OK) { \ - fprintf(stderr, "%s error: %d\n", msg, err); \ - exit(1); \ - } \ -} - -static const uint8_t *data; -static size_t dataLen; -static alloc_func zalloc = NULL; -static free_func zfree = NULL; - -/* =========================================================================== - * Test deflate() with full flush - */ -void test_flush(unsigned char *compr, z_size_t *comprLen) { - PREFIX3(stream) c_stream; /* compression stream */ - int err; - unsigned int len = dataLen; - - c_stream.zalloc = zalloc; - c_stream.zfree = zfree; - c_stream.opaque = (void *)0; - - err = PREFIX(deflateInit)(&c_stream, Z_DEFAULT_COMPRESSION); - CHECK_ERR(err, "deflateInit"); - - c_stream.next_in = (const unsigned char *)data; - c_stream.next_out = compr; - c_stream.avail_in = 3; - c_stream.avail_out = (unsigned int)*comprLen; - err = PREFIX(deflate)(&c_stream, Z_FULL_FLUSH); - CHECK_ERR(err, "deflate flush 1"); - - compr[3]++; /* force an error in first compressed block */ - c_stream.avail_in = len - 3; - - err = PREFIX(deflate)(&c_stream, Z_FINISH); - if (err != Z_STREAM_END) { - CHECK_ERR(err, "deflate flush 2"); - } - err = PREFIX(deflateEnd)(&c_stream); - CHECK_ERR(err, "deflateEnd"); - - *comprLen = (z_size_t)c_stream.total_out; -} - -/* =========================================================================== - * Test inflateSync() - */ -void test_sync(unsigned char *compr, size_t comprLen, unsigned char *uncompr, - size_t uncomprLen) { - int err; - PREFIX3(stream) d_stream; /* decompression stream */ - - d_stream.zalloc = zalloc; - d_stream.zfree = zfree; - d_stream.opaque = (void *)0; - - d_stream.next_in = compr; - d_stream.avail_in = 2; /* just read the zlib header */ - - err = PREFIX(inflateInit)(&d_stream); - CHECK_ERR(err, "inflateInit"); - - d_stream.next_out = uncompr; - d_stream.avail_out = (unsigned int)uncomprLen; - - err = PREFIX(inflate)(&d_stream, Z_NO_FLUSH); - CHECK_ERR(err, "inflate"); - - d_stream.avail_in = (unsigned int)comprLen - 2; /* read all compressed data */ - err = PREFIX(inflateSync)(&d_stream); /* but skip the damaged part */ - CHECK_ERR(err, "inflateSync"); - - err = PREFIX(inflate)(&d_stream, Z_FINISH); - if (err != Z_DATA_ERROR) { - fprintf(stderr, "inflate should report DATA_ERROR\n"); - /* Because of incorrect adler32 */ - exit(1); - } - err = PREFIX(inflateEnd)(&d_stream); - CHECK_ERR(err, "inflateEnd"); -} - -int LLVMFuzzerTestOneInput(const uint8_t *d, size_t size) { - size_t comprLen = 100 + 2 * PREFIX(compressBound)(size); - size_t uncomprLen = size; - uint8_t *compr, *uncompr; - - /* Discard inputs larger than 1Mb. */ - static size_t kMaxSize = 1024 * 1024; - - // This test requires at least 3 bytes of input data. - if (size <= 3 || size > kMaxSize) - return 0; - - data = d; - dataLen = size; - compr = (uint8_t *)calloc(1, comprLen); - uncompr = (uint8_t *)calloc(1, uncomprLen); - - test_flush(compr, &comprLen); - test_sync(compr, comprLen, uncompr, uncomprLen); - - free(compr); - free(uncompr); - - /* This function must return 0. */ - return 0; -} diff --git a/libs/zlibng/test/fuzz/example_large_fuzzer.c b/libs/zlibng/test/fuzz/example_large_fuzzer.c deleted file mode 100644 index 1e8fedc22..000000000 --- a/libs/zlibng/test/fuzz/example_large_fuzzer.c +++ /dev/null @@ -1,143 +0,0 @@ -#include -#include -#include -#include -#include -#include -#include - -#include "zbuild.h" -#ifdef ZLIB_COMPAT -# include "zlib.h" -#else -# include "zlib-ng.h" -#endif - -#define CHECK_ERR(err, msg) { \ - if (err != Z_OK) { \ - fprintf(stderr, "%s error: %d\n", msg, err); \ - exit(1); \ - } \ -} - -static const uint8_t *data; -static size_t dataLen; -static alloc_func zalloc = NULL; -static free_func zfree = NULL; -static unsigned int diff; - -/* =========================================================================== - * Test deflate() with large buffers and dynamic change of compression level - */ -void test_large_deflate(unsigned char *compr, size_t comprLen, - unsigned char *uncompr, size_t uncomprLen) { - PREFIX3(stream) c_stream; /* compression stream */ - int err; - - c_stream.zalloc = zalloc; - c_stream.zfree = zfree; - c_stream.opaque = (void *)0; - - err = PREFIX(deflateInit)(&c_stream, Z_BEST_COMPRESSION); - CHECK_ERR(err, "deflateInit"); - - c_stream.next_out = compr; - c_stream.avail_out = (unsigned int)comprLen; - - /* At this point, uncompr is still mostly zeroes, so it should compress - * very well: - */ - c_stream.next_in = uncompr; - c_stream.avail_in = (unsigned int)uncomprLen; - err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH); - CHECK_ERR(err, "deflate large 1"); - if (c_stream.avail_in != 0) { - fprintf(stderr, "deflate not greedy\n"); - exit(1); - } - - /* Feed in already compressed data and switch to no compression: */ - PREFIX(deflateParams)(&c_stream, Z_NO_COMPRESSION, Z_DEFAULT_STRATEGY); - c_stream.next_in = compr; - diff = (unsigned int)(c_stream.next_out - compr); - c_stream.avail_in = diff; - err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH); - CHECK_ERR(err, "deflate large 2"); - - /* Switch back to compressing mode: */ - PREFIX(deflateParams)(&c_stream, Z_BEST_COMPRESSION, Z_FILTERED); - c_stream.next_in = uncompr; - c_stream.avail_in = (unsigned int)uncomprLen; - err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH); - CHECK_ERR(err, "deflate large 3"); - - err = PREFIX(deflate)(&c_stream, Z_FINISH); - if (err != Z_STREAM_END) { - fprintf(stderr, "deflate large should report Z_STREAM_END\n"); - exit(1); - } - err = PREFIX(deflateEnd)(&c_stream); - CHECK_ERR(err, "deflateEnd"); -} - -/* =========================================================================== - * Test inflate() with large buffers - */ -void test_large_inflate(unsigned char *compr, size_t comprLen, - unsigned char *uncompr, size_t uncomprLen) { - int err; - PREFIX3(stream) d_stream; /* decompression stream */ - - d_stream.zalloc = zalloc; - d_stream.zfree = zfree; - d_stream.opaque = (void *)0; - - d_stream.next_in = compr; - d_stream.avail_in = (unsigned int)comprLen; - - err = PREFIX(inflateInit)(&d_stream); - CHECK_ERR(err, "inflateInit"); - - for (;;) { - d_stream.next_out = uncompr; /* discard the output */ - d_stream.avail_out = (unsigned int)uncomprLen; - err = PREFIX(inflate)(&d_stream, Z_NO_FLUSH); - if (err == Z_STREAM_END) - break; - CHECK_ERR(err, "large inflate"); - } - - err = PREFIX(inflateEnd)(&d_stream); - CHECK_ERR(err, "inflateEnd"); - - if (d_stream.total_out != 2 * uncomprLen + diff) { - fprintf(stderr, "bad large inflate: %zu\n", d_stream.total_out); - exit(1); - } -} - -int LLVMFuzzerTestOneInput(const uint8_t *d, size_t size) { - size_t comprLen = 100 + 3 * size; - size_t uncomprLen = comprLen; - uint8_t *compr, *uncompr; - - /* Discard inputs larger than 512Kb. */ - static size_t kMaxSize = 512 * 1024; - - if (size < 1 || size > kMaxSize) - return 0; - - data = d; - dataLen = size; - compr = (uint8_t *)calloc(1, comprLen); - uncompr = (uint8_t *)calloc(1, uncomprLen); - - test_large_deflate(compr, comprLen, uncompr, uncomprLen); - test_large_inflate(compr, comprLen, uncompr, uncomprLen); - - free(compr); - free(uncompr); - - /* This function must return 0. */ - return 0; -} diff --git a/libs/zlibng/test/fuzz/example_small_fuzzer.c b/libs/zlibng/test/fuzz/example_small_fuzzer.c deleted file mode 100644 index d965c2db8..000000000 --- a/libs/zlibng/test/fuzz/example_small_fuzzer.c +++ /dev/null @@ -1,124 +0,0 @@ -#include -#include -#include -#include -#include -#include -#include - -#include "zbuild.h" -#ifdef ZLIB_COMPAT -# include "zlib.h" -#else -# include "zlib-ng.h" -#endif - -#define CHECK_ERR(err, msg) { \ - if (err != Z_OK) { \ - fprintf(stderr, "%s error: %d\n", msg, err); \ - exit(1); \ - } \ -} - -static const uint8_t *data; -static size_t dataLen; -static alloc_func zalloc = NULL; -static free_func zfree = NULL; - -/* =========================================================================== - * Test deflate() with small buffers - */ -void test_deflate(unsigned char *compr, size_t comprLen) { - PREFIX3(stream) c_stream; /* compression stream */ - int err; - unsigned long len = dataLen; - - c_stream.zalloc = zalloc; - c_stream.zfree = zfree; - c_stream.opaque = (void *)0; - - err = PREFIX(deflateInit)(&c_stream, Z_DEFAULT_COMPRESSION); - CHECK_ERR(err, "deflateInit"); - - c_stream.next_in = (const unsigned char *)data; - c_stream.next_out = compr; - - while (c_stream.total_in != len && c_stream.total_out < comprLen) { - c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */ - err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH); - CHECK_ERR(err, "deflate small 1"); - } - /* Finish the stream, still forcing small buffers: */ - for (;;) { - c_stream.avail_out = 1; - err = PREFIX(deflate)(&c_stream, Z_FINISH); - if (err == Z_STREAM_END) - break; - CHECK_ERR(err, "deflate small 2"); - } - - err = PREFIX(deflateEnd)(&c_stream); - CHECK_ERR(err, "deflateEnd"); -} - -/* =========================================================================== - * Test inflate() with small buffers - */ -void test_inflate(unsigned char *compr, size_t comprLen, unsigned char *uncompr, - size_t uncomprLen) { - int err; - PREFIX3(stream) d_stream; /* decompression stream */ - - d_stream.zalloc = zalloc; - d_stream.zfree = zfree; - d_stream.opaque = (void *)0; - - d_stream.next_in = compr; - d_stream.avail_in = 0; - d_stream.next_out = uncompr; - - err = PREFIX(inflateInit)(&d_stream); - CHECK_ERR(err, "inflateInit"); - - while (d_stream.total_out < uncomprLen && d_stream.total_in < comprLen) { - d_stream.avail_in = d_stream.avail_out = 1; /* force small buffers */ - err = PREFIX(inflate)(&d_stream, Z_NO_FLUSH); - if (err == Z_STREAM_END) - break; - CHECK_ERR(err, "inflate"); - } - - err = PREFIX(inflateEnd)(&d_stream); - CHECK_ERR(err, "inflateEnd"); - - if (memcmp(uncompr, data, dataLen)) { - fprintf(stderr, "bad inflate\n"); - exit(1); - } -} - -int LLVMFuzzerTestOneInput(const uint8_t *d, size_t size) { - size_t comprLen = PREFIX(compressBound)(size); - size_t uncomprLen = size; - uint8_t *compr, *uncompr; - - /* Discard inputs larger than 1Mb. */ - static size_t kMaxSize = 1024 * 1024; - - if (size < 1 || size > kMaxSize) - return 0; - - data = d; - dataLen = size; - compr = (uint8_t *)calloc(1, comprLen); - uncompr = (uint8_t *)calloc(1, uncomprLen); - - test_deflate(compr, comprLen); - test_inflate(compr, comprLen, uncompr, uncomprLen); - - free(compr); - free(uncompr); - - /* This function must return 0. */ - return 0; -} diff --git a/libs/zlibng/test/fuzz/minigzip_fuzzer.c b/libs/zlibng/test/fuzz/minigzip_fuzzer.c deleted file mode 100644 index d0c35571f..000000000 --- a/libs/zlibng/test/fuzz/minigzip_fuzzer.c +++ /dev/null @@ -1,326 +0,0 @@ -/* minigzip.c -- simulate gzip using the zlib compression library - * Copyright (C) 1995-2006, 2010, 2011, 2016 Jean-loup Gailly - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* - * minigzip is a minimal implementation of the gzip utility. This is - * only an example of using zlib and isn't meant to replace the - * full-featured gzip. No attempt is made to deal with file systems - * limiting names to 14 or 8+3 characters, etc... Error checking is - * very limited. So use minigzip only for testing; use gzip for the - * real thing. - */ - -/* @(#) $Id$ */ - -#include "zbuild.h" -#ifdef ZLIB_COMPAT -# include "zlib.h" -#else -# include "zlib-ng.h" -#endif -#include -#include -#include -#include - -#ifdef USE_MMAP -# include -# include -# include -#endif - -#ifndef UNALIGNED_OK -# include -#endif - -#if defined(WIN32) || defined(__CYGWIN__) -# include -# include -# define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY) -#else -# define SET_BINARY_MODE(file) -#endif - -#if defined(_MSC_VER) && _MSC_VER < 1900 -# define snprintf _snprintf -#endif - -#if !defined(Z_HAVE_UNISTD_H) && !defined(_LARGEFILE64_SOURCE) -#ifndef WIN32 /* unlink already in stdio.h for WIN32 */ - extern int unlink (const char *); -#endif -#endif - -#ifndef GZ_SUFFIX -# define GZ_SUFFIX ".gz" -#endif -#define SUFFIX_LEN (sizeof(GZ_SUFFIX)-1) - -#define BUFLEN 16384 /* read buffer size */ -#define BUFLENW (BUFLEN * 3) /* write buffer size */ -#define MAX_NAME_LEN 1024 - -static char *prog; - -void error (const char *msg); -void gz_compress (FILE *in, gzFile out); -#ifdef USE_MMAP -int gz_compress_mmap (FILE *in, gzFile out); -#endif -void gz_uncompress (gzFile in, FILE *out); -void file_compress (char *file, char *mode); -void file_uncompress (char *file); -int main (int argc, char *argv[]); - -/* =========================================================================== - * Display error message and exit - */ -void error(const char *msg) -{ - fprintf(stderr, "%s: %s\n", prog, msg); - exit(1); -} - -/* =========================================================================== - * Compress input to output then close both files. - */ - -void gz_compress(FILE *in, gzFile out) -{ - char buf[BUFLEN]; - int len; - int err; - -#ifdef USE_MMAP - /* Try first compressing with mmap. If mmap fails (minigzip used in a - * pipe), use the normal fread loop. - */ - if (gz_compress_mmap(in, out) == Z_OK) return; -#endif - /* Clear out the contents of buf before reading from the file to avoid - MemorySanitizer: use-of-uninitialized-value warnings. */ - memset(buf, 0, sizeof(buf)); - for (;;) { - len = (int)fread(buf, 1, sizeof(buf), in); - if (ferror(in)) { - perror("fread"); - exit(1); - } - if (len == 0) break; - - if (PREFIX(gzwrite)(out, buf, (unsigned)len) != len) error(PREFIX(gzerror)(out, &err)); - } - fclose(in); - if (PREFIX(gzclose)(out) != Z_OK) error("failed gzclose"); -} - -#ifdef USE_MMAP /* MMAP version, Miguel Albrecht */ - -/* Try compressing the input file at once using mmap. Return Z_OK if - * if success, Z_ERRNO otherwise. - */ -int gz_compress_mmap(FILE *in, gzFile out) -{ - int len; - int err; - int ifd = fileno(in); - caddr_t buf; /* mmap'ed buffer for the entire input file */ - off_t buf_len; /* length of the input file */ - struct stat sb; - - /* Determine the size of the file, needed for mmap: */ - if (fstat(ifd, &sb) < 0) return Z_ERRNO; - buf_len = sb.st_size; - if (buf_len <= 0) return Z_ERRNO; - - /* Now do the actual mmap: */ - buf = mmap((caddr_t) 0, buf_len, PROT_READ, MAP_SHARED, ifd, (off_t)0); - if (buf == (caddr_t)(-1)) return Z_ERRNO; - - /* Compress the whole file at once: */ - len = PREFIX(gzwrite)(out, (char *)buf, (unsigned)buf_len); - - if (len != (int)buf_len) error(PREFIX(gzerror)(out, &err)); - - munmap(buf, buf_len); - fclose(in); - if (PREFIX(gzclose)(out) != Z_OK) error("failed gzclose"); - return Z_OK; -} -#endif /* USE_MMAP */ - -/* =========================================================================== - * Uncompress input to output then close both files. - */ -void gz_uncompress(gzFile in, FILE *out) -{ - char buf[BUFLENW]; - int len; - int err; - - for (;;) { - len = PREFIX(gzread)(in, buf, sizeof(buf)); - if (len < 0) error (PREFIX(gzerror)(in, &err)); - if (len == 0) break; - - if ((int)fwrite(buf, 1, (unsigned)len, out) != len) { - error("failed fwrite"); - } - } - if (fclose(out)) error("failed fclose"); - - if (PREFIX(gzclose)(in) != Z_OK) error("failed gzclose"); -} - - -/* =========================================================================== - * Compress the given file: create a corresponding .gz file and remove the - * original. - */ -void file_compress(char *file, char *mode) -{ - char outfile[MAX_NAME_LEN]; - FILE *in; - gzFile out; - - if (strlen(file) + strlen(GZ_SUFFIX) >= sizeof(outfile)) { - fprintf(stderr, "%s: filename too long\n", prog); - exit(1); - } - - snprintf(outfile, sizeof(outfile), "%s%s", file, GZ_SUFFIX); - - in = fopen(file, "rb"); - if (in == NULL) { - perror(file); - exit(1); - } - out = PREFIX(gzopen)(outfile, mode); - if (out == NULL) { - fprintf(stderr, "%s: can't gzopen %s\n", prog, outfile); - exit(1); - } - gz_compress(in, out); - - unlink(file); -} - - -/* =========================================================================== - * Uncompress the given file and remove the original. - */ -void file_uncompress(char *file) -{ - char buf[MAX_NAME_LEN]; - char *infile, *outfile; - FILE *out; - gzFile in; - size_t len = strlen(file); - - if (len + strlen(GZ_SUFFIX) >= sizeof(buf)) { - fprintf(stderr, "%s: filename too long\n", prog); - exit(1); - } - - snprintf(buf, sizeof(buf), "%s", file); - - if (len > SUFFIX_LEN && strcmp(file+len-SUFFIX_LEN, GZ_SUFFIX) == 0) { - infile = file; - outfile = buf; - outfile[len-3] = '\0'; - } else { - outfile = file; - infile = buf; - snprintf(buf + len, sizeof(buf) - len, "%s", GZ_SUFFIX); - } - in = PREFIX(gzopen)(infile, "rb"); - if (in == NULL) { - fprintf(stderr, "%s: can't gzopen %s\n", prog, infile); - exit(1); - } - out = fopen(outfile, "wb"); - if (out == NULL) { - perror(file); - exit(1); - } - - gz_uncompress(in, out); - - unlink(infile); -} - -int LLVMFuzzerTestOneInput(const uint8_t *data, size_t dataLen) { - char *inFileName = "/tmp/minigzip_fuzzer.out"; - char *outFileName = "/tmp/minigzip_fuzzer.out.gz"; - char outmode[20]; - FILE *in; - char buf[BUFLEN]; - uint32_t offset = 0; - - /* Discard inputs larger than 1Mb. */ - static size_t kMaxSize = 1024 * 1024; - if (dataLen < 1 || dataLen > kMaxSize) - return 0; - - in = fopen(inFileName, "w"); - if (fwrite(data, 1, (unsigned)dataLen, in) != dataLen) - error("failed fwrite"); - if (fclose(in)) - error("failed fclose"); - - memset(outmode, 0, sizeof(outmode)); - snprintf(outmode, sizeof(outmode), "%s", "wb"); - - /* Compression level: [0..9]. */ - outmode[2] = data[0] % 10; - - switch (data[0] % 4) { - default: - case 0: - outmode[3] = 0; - break; - case 1: - /* compress with Z_FILTERED */ - outmode[3] = 'f'; - break; - case 2: - /* compress with Z_HUFFMAN_ONLY */ - outmode[3] = 'h'; - break; - case 3: - /* compress with Z_RLE */ - outmode[3] = 'R'; - break; - } - - file_compress(inFileName, outmode); - file_uncompress(outFileName); - - /* Check that the uncompressed file matches the input data. */ - in = fopen(inFileName, "rb"); - if (in == NULL) { - perror(inFileName); - exit(1); - } - - memset(buf, 0, sizeof(buf)); - for (;;) { - int len = (int)fread(buf, 1, sizeof(buf), in); - if (ferror(in)) { - perror("fread"); - exit(1); - } - if (len == 0) - break; - assert(0 == memcmp(data + offset, buf, len)); - offset += len; - } - - if (fclose(in)) - error("failed fclose"); - - /* This function must return 0. */ - return 0; -} diff --git a/libs/zlibng/test/fuzz/standalone_fuzz_target_runner.c b/libs/zlibng/test/fuzz/standalone_fuzz_target_runner.c deleted file mode 100644 index 5a5c75096..000000000 --- a/libs/zlibng/test/fuzz/standalone_fuzz_target_runner.c +++ /dev/null @@ -1,35 +0,0 @@ -#include -#include -#include - -extern int LLVMFuzzerTestOneInput(const unsigned char *data, size_t size); - -int main(int argc, char **argv) { - int i; - fprintf(stderr, "StandaloneFuzzTargetMain: running %d inputs\n", argc - 1); - - for (i = 1; i < argc; i++) { - size_t len, n_read, err; - unsigned char *buf; - FILE *f = fopen(argv[i], "rb+"); - if (!f) { - /* Failed to open this file: it may be a directory. */ - fprintf(stderr, "Skipping: %s\n", argv[i]); - continue; - } - fprintf(stderr, "Running: %s %s\n", argv[0], argv[i]); - fseek(f, 0, SEEK_END); - len = ftell(f); - fseek(f, 0, SEEK_SET); - buf = (unsigned char *)malloc(len); - n_read = fread(buf, 1, len, f); - assert(n_read == len); - LLVMFuzzerTestOneInput(buf, len); - free(buf); - err = fclose(f); - assert(err == 0); - fprintf(stderr, "Done: %s: (%d bytes)\n", argv[i], (int)n_read); - } - - return 0; -} diff --git a/libs/zlibng/test/infcover.c b/libs/zlibng/test/infcover.c deleted file mode 100644 index 2b8ff974a..000000000 --- a/libs/zlibng/test/infcover.c +++ /dev/null @@ -1,669 +0,0 @@ -/* infcover.c -- test zlib's inflate routines with full code coverage - * Copyright (C) 2011, 2016 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* to use, do: ./configure --cover && make cover */ - -#include -#include -#include -#include -#include "zlib.h" - -/* get definition of internal structure so we can mess with it (see pull()), - and so we can call inflate_trees() (see cover5()) */ -#define ZLIB_INTERNAL -#include "zbuild.h" -#include "inftrees.h" -#include "inflate.h" - -/* -- memory tracking routines -- */ - -/* - These memory tracking routines are provided to zlib and track all of zlib's - allocations and deallocations, check for LIFO operations, keep a current - and high water mark of total bytes requested, optionally set a limit on the - total memory that can be allocated, and when done check for memory leaks. - - They are used as follows: - - z_stream strm; - mem_setup(&strm) initializes the memory tracking and sets the - zalloc, zfree, and opaque members of strm to use - memory tracking for all zlib operations on strm - mem_limit(&strm, limit) sets a limit on the total bytes requested -- a - request that exceeds this limit will result in an - allocation failure (returns NULL) -- setting the - limit to zero means no limit, which is the default - after mem_setup() - mem_used(&strm, "msg") prints to stderr "msg" and the total bytes used - mem_high(&strm, "msg") prints to stderr "msg" and the high water mark - mem_done(&strm, "msg") ends memory tracking, releases all allocations - for the tracking as well as leaked zlib blocks, if - any. If there was anything unusual, such as leaked - blocks, non-FIFO frees, or frees of addresses not - allocated, then "msg" and information about the - problem is printed to stderr. If everything is - normal, nothing is printed. mem_done resets the - strm members to NULL to use the default memory - allocation routines on the next zlib initialization - using strm. - */ - -/* these items are strung together in a linked list, one for each allocation */ -struct mem_item { - void *ptr; /* pointer to allocated memory */ - size_t size; /* requested size of allocation */ - struct mem_item *next; /* pointer to next item in list, or NULL */ -}; - -/* this structure is at the root of the linked list, and tracks statistics */ -struct mem_zone { - struct mem_item *first; /* pointer to first item in list, or NULL */ - size_t total, highwater; /* total allocations, and largest total */ - size_t limit; /* memory allocation limit, or 0 if no limit */ - int notlifo, rogue; /* counts of non-LIFO frees and rogue frees */ -}; - -/* memory allocation routine to pass to zlib */ -static void *mem_alloc(void *mem, unsigned count, unsigned size) -{ - void *ptr; - struct mem_item *item; - struct mem_zone *zone = mem; - size_t len = count * (size_t)size; - - /* induced allocation failure */ - if (zone == NULL || (zone->limit && zone->total + len > zone->limit)) - return NULL; - - /* perform allocation using the standard library, fill memory with a - non-zero value to make sure that the code isn't depending on zeros */ - ptr = malloc(len); - if (ptr == NULL) - return NULL; - memset(ptr, 0xa5, len); - - /* create a new item for the list */ - item = malloc(sizeof(struct mem_item)); - if (item == NULL) { - free(ptr); - return NULL; - } - item->ptr = ptr; - item->size = len; - - /* insert item at the beginning of the list */ - item->next = zone->first; - zone->first = item; - - /* update the statistics */ - zone->total += item->size; - if (zone->total > zone->highwater) - zone->highwater = zone->total; - - /* return the allocated memory */ - return ptr; -} - -/* memory free routine to pass to zlib */ -static void mem_free(void *mem, void *ptr) -{ - struct mem_item *item, *next; - struct mem_zone *zone = mem; - - /* if no zone, just do a free */ - if (zone == NULL) { - free(ptr); - return; - } - - /* point next to the item that matches ptr, or NULL if not found -- remove - the item from the linked list if found */ - next = zone->first; - if (next) { - if (next->ptr == ptr) - zone->first = next->next; /* first one is it, remove from list */ - else { - do { /* search the linked list */ - item = next; - next = item->next; - } while (next != NULL && next->ptr != ptr); - if (next) { /* if found, remove from linked list */ - item->next = next->next; - zone->notlifo++; /* not a LIFO free */ - } - - } - } - - /* if found, update the statistics and free the item */ - if (next) { - zone->total -= next->size; - free(next); - } - - /* if not found, update the rogue count */ - else - zone->rogue++; - - /* in any case, do the requested free with the standard library function */ - free(ptr); -} - -/* set up a controlled memory allocation space for monitoring, set the stream - parameters to the controlled routines, with opaque pointing to the space */ -static void mem_setup(z_stream *strm) -{ - struct mem_zone *zone; - - zone = malloc(sizeof(struct mem_zone)); - assert(zone != NULL); - zone->first = NULL; - zone->total = 0; - zone->highwater = 0; - zone->limit = 0; - zone->notlifo = 0; - zone->rogue = 0; - strm->opaque = zone; - strm->zalloc = mem_alloc; - strm->zfree = mem_free; -} - -/* set a limit on the total memory allocation, or 0 to remove the limit */ -static void mem_limit(z_stream *strm, size_t limit) -{ - struct mem_zone *zone = strm->opaque; - - zone->limit = limit; -} - -/* show the current total requested allocations in bytes */ -static void mem_used(z_stream *strm, char *prefix) -{ - struct mem_zone *zone = strm->opaque; - - fprintf(stderr, "%s: %zu allocated\n", prefix, zone->total); -} - -/* show the high water allocation in bytes */ -static void mem_high(z_stream *strm, char *prefix) -{ - struct mem_zone *zone = strm->opaque; - - fprintf(stderr, "%s: %zu high water mark\n", prefix, zone->highwater); -} - -/* release the memory allocation zone -- if there are any surprises, notify */ -static void mem_done(z_stream *strm, char *prefix) -{ - int count = 0; - struct mem_item *item, *next; - struct mem_zone *zone = strm->opaque; - - /* show high water mark */ - mem_high(strm, prefix); - - /* free leftover allocations and item structures, if any */ - item = zone->first; - while (item != NULL) { - free(item->ptr); - next = item->next; - free(item); - item = next; - count++; - } - - /* issue alerts about anything unexpected */ - if (count || zone->total) - fprintf(stderr, "** %s: %zu bytes in %d blocks not freed\n", - prefix, zone->total, count); - if (zone->notlifo) - fprintf(stderr, "** %s: %d frees not LIFO\n", prefix, zone->notlifo); - if (zone->rogue) - fprintf(stderr, "** %s: %d frees not recognized\n", - prefix, zone->rogue); - - /* free the zone and delete from the stream */ - free(zone); - strm->opaque = NULL; - strm->zalloc = NULL; - strm->zfree = NULL; -} - -/* -- inflate test routines -- */ - -/* Decode a hexadecimal string, set *len to length, in[] to the bytes. This - decodes liberally, in that hex digits can be adjacent, in which case two in - a row writes a byte. Or they can be delimited by any non-hex character, - where the delimiters are ignored except when a single hex digit is followed - by a delimiter, where that single digit writes a byte. The returned data is - allocated and must eventually be freed. NULL is returned if out of memory. - If the length is not needed, then len can be NULL. */ -static unsigned char *h2b(const char *hex, unsigned *len) -{ - unsigned char *in, *re; - unsigned next, val; - - in = malloc((strlen(hex) + 1) >> 1); - if (in == NULL) - return NULL; - next = 0; - val = 1; - do { - if (*hex >= '0' && *hex <= '9') - val = (val << 4) + *hex - '0'; - else if (*hex >= 'A' && *hex <= 'F') - val = (val << 4) + *hex - 'A' + 10; - else if (*hex >= 'a' && *hex <= 'f') - val = (val << 4) + *hex - 'a' + 10; - else if (val != 1 && val < 32) /* one digit followed by delimiter */ - val += 240; /* make it look like two digits */ - if (val > 255) { /* have two digits */ - in[next++] = val & 0xff; /* save the decoded byte */ - val = 1; /* start over */ - } - } while (*hex++); /* go through the loop with the terminating null */ - if (len != NULL) - *len = next; - re = realloc(in, next); - return re == NULL ? in : re; -} - -/* generic inflate() run, where hex is the hexadecimal input data, what is the - text to include in an error message, step is how much input data to feed - inflate() on each call, or zero to feed it all, win is the window bits - parameter to inflateInit2(), len is the size of the output buffer, and err - is the error code expected from the first inflate() call (the second - inflate() call is expected to return Z_STREAM_END). If win is 47, then - header information is collected with inflateGetHeader(). If a zlib stream - is looking for a dictionary, then an empty dictionary is provided. - inflate() is run until all of the input data is consumed. */ -static void inf(char *hex, char *what, unsigned step, int win, unsigned len, int err) -{ - int ret; - unsigned have; - unsigned char *in, *out; - z_stream strm, copy; - gz_header head; - - mem_setup(&strm); - strm.avail_in = 0; - strm.next_in = NULL; - ret = inflateInit2(&strm, win); - if (ret != Z_OK) { - mem_done(&strm, what); - return; - } - out = malloc(len); assert(out != NULL); - if (win == 47) { - head.extra = out; - head.extra_max = len; - head.name = out; - head.name_max = len; - head.comment = out; - head.comm_max = len; - ret = inflateGetHeader(&strm, &head); assert(ret == Z_OK); - } - in = h2b(hex, &have); assert(in != NULL); - if (step == 0 || step > have) - step = have; - strm.avail_in = step; - have -= step; - strm.next_in = in; - do { - strm.avail_out = len; - strm.next_out = out; - ret = inflate(&strm, Z_NO_FLUSH); assert(err == 9 || ret == err); - if (ret != Z_OK && ret != Z_BUF_ERROR && ret != Z_NEED_DICT) - break; - if (ret == Z_NEED_DICT) { - ret = inflateSetDictionary(&strm, in, 1); - assert(ret == Z_DATA_ERROR); - mem_limit(&strm, 1); - ret = inflateSetDictionary(&strm, out, 0); - assert(ret == Z_MEM_ERROR); - mem_limit(&strm, 0); - ((struct inflate_state *)strm.state)->mode = DICT; - ret = inflateSetDictionary(&strm, out, 0); - assert(ret == Z_OK); - ret = inflate(&strm, Z_NO_FLUSH); assert(ret == Z_BUF_ERROR); - } - ret = inflateCopy(©, &strm); assert(ret == Z_OK); - ret = inflateEnd(©); assert(ret == Z_OK); - err = 9; /* don't care next time around */ - have += strm.avail_in; - strm.avail_in = step > have ? have : step; - have -= strm.avail_in; - } while (strm.avail_in); - free(in); - free(out); - ret = inflateReset2(&strm, -8); assert(ret == Z_OK); - ret = inflateEnd(&strm); assert(ret == Z_OK); - mem_done(&strm, what); -} - -/* cover all of the lines in inflate.c up to inflate() */ -static void cover_support(void) -{ - int ret; - z_stream strm; - - mem_setup(&strm); - strm.avail_in = 0; - strm.next_in = NULL; - ret = inflateInit(&strm); assert(ret == Z_OK); - mem_used(&strm, "inflate init"); - ret = inflatePrime(&strm, 5, 31); assert(ret == Z_OK); - ret = inflatePrime(&strm, -1, 0); assert(ret == Z_OK); - ret = inflateSetDictionary(&strm, NULL, 0); - assert(ret == Z_STREAM_ERROR); - ret = inflateEnd(&strm); assert(ret == Z_OK); - mem_done(&strm, "prime"); - - inf("63 0", "force window allocation", 0, -15, 1, Z_OK); - inf("63 18 5", "force window replacement", 0, -8, 259, Z_OK); - inf("63 18 68 30 d0 0 0", "force split window update", 4, -8, 259, Z_OK); - inf("3 0", "use fixed blocks", 0, -15, 1, Z_STREAM_END); - inf("", "bad window size", 0, 1, 0, Z_STREAM_ERROR); - - mem_setup(&strm); - strm.avail_in = 0; - strm.next_in = NULL; - ret = inflateInit_(&strm, ZLIB_VERSION + 1, (int)sizeof(z_stream)); - assert(ret == Z_VERSION_ERROR); - mem_done(&strm, "wrong version"); - - strm.avail_in = 0; - strm.next_in = NULL; - ret = inflateInit(&strm); assert(ret == Z_OK); - ret = inflateEnd(&strm); assert(ret == Z_OK); - fputs("inflate built-in memory routines\n", stderr); -} - -/* cover all inflate() header and trailer cases and code after inflate() */ -static void cover_wrap(void) -{ - int ret; - z_stream strm, copy; - unsigned char dict[257]; - - ret = inflate(NULL, 0); assert(ret == Z_STREAM_ERROR); - ret = inflateEnd(NULL); assert(ret == Z_STREAM_ERROR); - ret = inflateCopy(NULL, NULL); assert(ret == Z_STREAM_ERROR); - fputs("inflate bad parameters\n", stderr); - - inf("1f 8b 0 0", "bad gzip method", 0, 31, 0, Z_DATA_ERROR); - inf("1f 8b 8 80", "bad gzip flags", 0, 31, 0, Z_DATA_ERROR); - inf("77 85", "bad zlib method", 0, 15, 0, Z_DATA_ERROR); - inf("8 99", "set window size from header", 0, 0, 0, Z_OK); - inf("78 9c", "bad zlib window size", 0, 8, 0, Z_DATA_ERROR); - inf("78 9c 63 0 0 0 1 0 1", "check adler32", 0, 15, 1, Z_STREAM_END); - inf("1f 8b 8 1e 0 0 0 0 0 0 1 0 0 0 0 0 0", "bad header crc", 0, 47, 1, - Z_DATA_ERROR); - inf("1f 8b 8 2 0 0 0 0 0 0 1d 26 3 0 0 0 0 0 0 0 0 0", "check gzip length", - 0, 47, 0, Z_STREAM_END); - inf("78 90", "bad zlib header check", 0, 47, 0, Z_DATA_ERROR); - inf("8 b8 0 0 0 1", "need dictionary", 0, 8, 0, Z_NEED_DICT); - inf("78 9c 63 0", "compute adler32", 0, 15, 1, Z_OK); - - mem_setup(&strm); - strm.avail_in = 0; - strm.next_in = NULL; - ret = inflateInit2(&strm, -8); - strm.avail_in = 2; - strm.next_in = (void *)"\x63"; - strm.avail_out = 1; - strm.next_out = (void *)&ret; - mem_limit(&strm, 1); - ret = inflate(&strm, Z_NO_FLUSH); assert(ret == Z_MEM_ERROR); - ret = inflate(&strm, Z_NO_FLUSH); assert(ret == Z_MEM_ERROR); - mem_limit(&strm, 0); - memset(dict, 0, 257); - ret = inflateSetDictionary(&strm, dict, 257); - assert(ret == Z_OK); - mem_limit(&strm, (sizeof(struct inflate_state) << 1) + 256); - ret = inflatePrime(&strm, 16, 0); assert(ret == Z_OK); - strm.avail_in = 2; - strm.next_in = (void *)"\x80"; - ret = inflateSync(&strm); assert(ret == Z_DATA_ERROR); - ret = inflate(&strm, Z_NO_FLUSH); assert(ret == Z_STREAM_ERROR); - strm.avail_in = 4; - strm.next_in = (void *)"\0\0\xff\xff"; - ret = inflateSync(&strm); assert(ret == Z_OK); - (void)inflateSyncPoint(&strm); - ret = inflateCopy(©, &strm); assert(ret == Z_MEM_ERROR); - mem_limit(&strm, 0); - ret = inflateUndermine(&strm, 1); assert(ret == Z_DATA_ERROR); - (void)inflateMark(&strm); - ret = inflateEnd(&strm); assert(ret == Z_OK); - mem_done(&strm, "miscellaneous, force memory errors"); -} - -/* input and output functions for inflateBack() */ -static unsigned pull(void *desc, const unsigned char **buf) -{ - static unsigned int next = 0; - static unsigned char dat[] = {0x63, 0, 2, 0}; - struct inflate_state *state; - - if (desc == NULL) { - next = 0; - return 0; /* no input (already provided at next_in) */ - } - state = (void *)((z_stream *)desc)->state; - if (state != NULL) - state->mode = SYNC; /* force an otherwise impossible situation */ - return next < sizeof(dat) ? (*buf = dat + next++, 1) : 0; -} - -static int push(void *desc, unsigned char *buf, unsigned len) -{ - buf += len; - return desc != NULL; /* force error if desc not null */ -} - -/* cover inflateBack() up to common deflate data cases and after those */ -static void cover_back(void) -{ - int ret; - z_stream strm; - unsigned char win[32768]; - - ret = inflateBackInit_(NULL, 0, win, 0, 0); - assert(ret == Z_VERSION_ERROR); - ret = inflateBackInit(NULL, 0, win); assert(ret == Z_STREAM_ERROR); - ret = inflateBack(NULL, NULL, NULL, NULL, NULL); - assert(ret == Z_STREAM_ERROR); - ret = inflateBackEnd(NULL); assert(ret == Z_STREAM_ERROR); - fputs("inflateBack bad parameters\n", stderr); - - mem_setup(&strm); - ret = inflateBackInit(&strm, 15, win); assert(ret == Z_OK); - strm.avail_in = 2; - strm.next_in = (void *)"\x03"; - ret = inflateBack(&strm, pull, NULL, push, NULL); - assert(ret == Z_STREAM_END); - /* force output error */ - strm.avail_in = 3; - strm.next_in = (void *)"\x63\x00"; - ret = inflateBack(&strm, pull, NULL, push, &strm); - assert(ret == Z_BUF_ERROR); - /* force mode error by mucking with state */ - ret = inflateBack(&strm, pull, &strm, push, NULL); - assert(ret == Z_STREAM_ERROR); - ret = inflateBackEnd(&strm); assert(ret == Z_OK); - mem_done(&strm, "inflateBack bad state"); - - ret = inflateBackInit(&strm, 15, win); assert(ret == Z_OK); - ret = inflateBackEnd(&strm); assert(ret == Z_OK); - fputs("inflateBack built-in memory routines\n", stderr); -} - -/* do a raw inflate of data in hexadecimal with both inflate and inflateBack */ -static int try(char *hex, char *id, int err) -{ - int ret; - unsigned len, size; - unsigned char *in, *out, *win; - char *prefix; - z_stream strm; - - /* convert to hex */ - in = h2b(hex, &len); - assert(in != NULL); - - /* allocate work areas */ - size = len << 3; - out = malloc(size); - assert(out != NULL); - win = malloc(32768); - assert(win != NULL); - prefix = malloc(strlen(id) + 6); - assert(prefix != NULL); - - /* first with inflate */ - strcpy(prefix, id); - strcat(prefix, "-late"); - mem_setup(&strm); - strm.avail_in = 0; - strm.next_in = NULL; - ret = inflateInit2(&strm, err < 0 ? 47 : -15); - assert(ret == Z_OK); - strm.avail_in = len; - strm.next_in = in; - do { - strm.avail_out = size; - strm.next_out = out; - ret = inflate(&strm, Z_TREES); - assert(ret != Z_STREAM_ERROR && ret != Z_MEM_ERROR); - if (ret == Z_DATA_ERROR || ret == Z_NEED_DICT) - break; - } while (strm.avail_in || strm.avail_out == 0); - if (err) { - assert(ret == Z_DATA_ERROR); - assert(strcmp(id, strm.msg) == 0); - } - inflateEnd(&strm); - mem_done(&strm, prefix); - - /* then with inflateBack */ - if (err >= 0) { - strcpy(prefix, id); - strcat(prefix, "-back"); - mem_setup(&strm); - ret = inflateBackInit(&strm, 15, win); - assert(ret == Z_OK); - strm.avail_in = len; - strm.next_in = in; - ret = inflateBack(&strm, pull, NULL, push, NULL); - assert(ret != Z_STREAM_ERROR); - if (err) { - assert(ret == Z_DATA_ERROR); - assert(strcmp(id, strm.msg) == 0); - } - inflateBackEnd(&strm); - mem_done(&strm, prefix); - } - - /* clean up */ - free(prefix); - free(win); - free(out); - free(in); - return ret; -} - -/* cover deflate data cases in both inflate() and inflateBack() */ -static void cover_inflate(void) -{ - try("0 0 0 0 0", "invalid stored block lengths", 1); - try("3 0", "fixed", 0); - try("6", "invalid block type", 1); - try("1 1 0 fe ff 0", "stored", 0); - try("fc 0 0", "too many length or distance symbols", 1); - try("4 0 fe ff", "invalid code lengths set", 1); - try("4 0 24 49 0", "invalid bit length repeat", 1); - try("4 0 24 e9 ff ff", "invalid bit length repeat", 1); - try("4 0 24 e9 ff 6d", "invalid code -- missing end-of-block", 1); - try("4 80 49 92 24 49 92 24 71 ff ff 93 11 0", - "invalid literal/lengths set", 1); - try("4 80 49 92 24 49 92 24 f b4 ff ff c3 84", "invalid distances set", 1); - try("4 c0 81 8 0 0 0 0 20 7f eb b 0 0", "invalid literal/length code", 1); - try("2 7e ff ff", "invalid distance code", 1); - try("c c0 81 0 0 0 0 0 90 ff 6b 4 0", "invalid distance too far back", 1); - - /* also trailer mismatch just in inflate() */ - try("1f 8b 8 0 0 0 0 0 0 0 3 0 0 0 0 1", "incorrect data check", -1); - try("1f 8b 8 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 1", - "incorrect length check", -1); - try("5 c0 21 d 0 0 0 80 b0 fe 6d 2f 91 6c", "pull 17", 0); - try("5 e0 81 91 24 cb b2 2c 49 e2 f 2e 8b 9a 47 56 9f fb fe ec d2 ff 1f", - "long code", 0); - try("ed c0 1 1 0 0 0 40 20 ff 57 1b 42 2c 4f", "length extra", 0); - try("ed cf c1 b1 2c 47 10 c4 30 fa 6f 35 1d 1 82 59 3d fb be 2e 2a fc f c", - "long distance and extra", 0); - try("ed c0 81 0 0 0 0 80 a0 fd a9 17 a9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 " - "0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6", "window end", 0); - inf("2 8 20 80 0 3 0", "inflate_fast TYPE return", 0, -15, 258, - Z_STREAM_END); - inf("63 18 5 40 c 0", "window wrap", 3, -8, 300, Z_OK); -} - -/* cover remaining lines in inftrees.c */ -static void cover_trees(void) -{ - int ret; - unsigned bits; - uint16_t lens[16], work[16]; - code *next, table[ENOUGH_DISTS]; - - /* we need to call inflate_table() directly in order to manifest not- - enough errors, since zlib insures that enough is always enough */ - for (bits = 0; bits < 15; bits++) - lens[bits] = (uint16_t)(bits + 1); - lens[15] = 15; - next = table; - bits = 15; - ret = inflate_table(DISTS, lens, 16, &next, &bits, work); - assert(ret == 1); - next = table; - bits = 1; - ret = inflate_table(DISTS, lens, 16, &next, &bits, work); - assert(ret == 1); - fputs("inflate_table not enough errors\n", stderr); -} - -/* cover remaining inffast.c decoding and window copying */ -static void cover_fast(void) -{ - inf("e5 e0 81 ad 6d cb b2 2c c9 01 1e 59 63 ae 7d ee fb 4d fd b5 35 41 68" - " ff 7f 0f 0 0 0", "fast length extra bits", 0, -8, 258, Z_DATA_ERROR); - inf("25 fd 81 b5 6d 59 b6 6a 49 ea af 35 6 34 eb 8c b9 f6 b9 1e ef 67 49" - " 50 fe ff ff 3f 0 0", "fast distance extra bits", 0, -8, 258, - Z_DATA_ERROR); - inf("3 7e 0 0 0 0 0", "fast invalid distance code", 0, -8, 258, - Z_DATA_ERROR); - inf("1b 7 0 0 0 0 0", "fast invalid literal/length code", 0, -8, 258, - Z_DATA_ERROR); - inf("d c7 1 ae eb 38 c 4 41 a0 87 72 de df fb 1f b8 36 b1 38 5d ff ff 0", - "fast 2nd level codes and too far back", 0, -8, 258, Z_DATA_ERROR); - inf("63 18 5 8c 10 8 0 0 0 0", "very common case", 0, -8, 259, Z_OK); - inf("63 60 60 18 c9 0 8 18 18 18 26 c0 28 0 29 0 0 0", - "contiguous and wrap around window", 6, -8, 259, Z_OK); - inf("63 0 3 0 0 0 0 0", "copy direct from output", 0, -8, 259, - Z_STREAM_END); -} - -int main(void) -{ - fprintf(stderr, "%s\n", zlibVersion()); - cover_support(); - cover_wrap(); - cover_back(); - cover_inflate(); - cover_trees(); - cover_fast(); - return 0; -} diff --git a/libs/zlibng/test/minigzip.c b/libs/zlibng/test/minigzip.c deleted file mode 100644 index ebbed9ae3..000000000 --- a/libs/zlibng/test/minigzip.c +++ /dev/null @@ -1,361 +0,0 @@ -/* minigzip.c -- simulate gzip using the zlib compression library - * Copyright (C) 1995-2006, 2010, 2011, 2016 Jean-loup Gailly - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* - * minigzip is a minimal implementation of the gzip utility. This is - * only an example of using zlib and isn't meant to replace the - * full-featured gzip. No attempt is made to deal with file systems - * limiting names to 14 or 8+3 characters, etc... Error checking is - * very limited. So use minigzip only for testing; use gzip for the - * real thing. - */ - -/* @(#) $Id$ */ - -#define _POSIX_SOURCE 1 /* This file needs POSIX for fdopen(). */ -#define _POSIX_C_SOURCE 200112 /* For snprintf(). */ - -#include "zbuild.h" -#ifdef ZLIB_COMPAT -# include "zlib.h" -#else -# include "zlib-ng.h" -#endif -#include - -#include -#include - -#ifdef USE_MMAP -# include -# include -# include -#endif - -#ifndef UNALIGNED_OK -# include -#endif - -#if defined(WIN32) || defined(__CYGWIN__) -# include -# include -# define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY) -#else -# define SET_BINARY_MODE(file) -#endif - -#if defined(_MSC_VER) && _MSC_VER < 1900 -# define snprintf _snprintf -#endif - -#if !defined(Z_HAVE_UNISTD_H) && !defined(_LARGEFILE64_SOURCE) -#ifndef WIN32 /* unlink already in stdio.h for WIN32 */ - extern int unlink (const char *); -#endif -#endif - -#ifndef GZ_SUFFIX -# define GZ_SUFFIX ".gz" -#endif -#define SUFFIX_LEN (sizeof(GZ_SUFFIX)-1) - -#if defined(S390_DFLTCC_DEFLATE) || defined(S390_DFLTCC_INFLATE) -#define BUFLEN 262144 /* DFLTCC works faster with larger buffers */ -#else -#define BUFLEN 16384 /* read buffer size */ -#endif -#define BUFLENW (BUFLEN * 3) /* write buffer size */ -#define MAX_NAME_LEN 1024 - -static char *prog; - -void error (const char *msg); -void gz_compress (FILE *in, gzFile out); -#ifdef USE_MMAP -int gz_compress_mmap (FILE *in, gzFile out); -#endif -void gz_uncompress (gzFile in, FILE *out); -void file_compress (char *file, char *mode); -void file_uncompress (char *file); -int main (int argc, char *argv[]); - -/* =========================================================================== - * Display error message and exit - */ -void error(const char *msg) -{ - fprintf(stderr, "%s: %s\n", prog, msg); - exit(1); -} - -/* =========================================================================== - * Compress input to output then close both files. - */ - -void gz_compress(FILE *in, gzFile out) -{ - char buf[BUFLEN]; - int len; - int err; - -#ifdef USE_MMAP - /* Try first compressing with mmap. If mmap fails (minigzip used in a - * pipe), use the normal fread loop. - */ - if (gz_compress_mmap(in, out) == Z_OK) return; -#endif - /* Clear out the contents of buf before reading from the file to avoid - MemorySanitizer: use-of-uninitialized-value warnings. */ - memset(buf, 0, sizeof(buf)); - for (;;) { - len = (int)fread(buf, 1, sizeof(buf), in); - if (ferror(in)) { - perror("fread"); - exit(1); - } - if (len == 0) break; - - if (PREFIX(gzwrite)(out, buf, (unsigned)len) != len) error(PREFIX(gzerror)(out, &err)); - } - fclose(in); - if (PREFIX(gzclose)(out) != Z_OK) error("failed gzclose"); -} - -#ifdef USE_MMAP /* MMAP version, Miguel Albrecht */ - -/* Try compressing the input file at once using mmap. Return Z_OK if - * if success, Z_ERRNO otherwise. - */ -int gz_compress_mmap(FILE *in, gzFile out) -{ - int len; - int err; - int ifd = fileno(in); - caddr_t buf; /* mmap'ed buffer for the entire input file */ - off_t buf_len; /* length of the input file */ - struct stat sb; - - /* Determine the size of the file, needed for mmap: */ - if (fstat(ifd, &sb) < 0) return Z_ERRNO; - buf_len = sb.st_size; - if (buf_len <= 0) return Z_ERRNO; - - /* Now do the actual mmap: */ - buf = mmap((caddr_t) 0, buf_len, PROT_READ, MAP_SHARED, ifd, (off_t)0); - if (buf == (caddr_t)(-1)) return Z_ERRNO; - - /* Compress the whole file at once: */ - len = PREFIX(gzwrite)(out, (char *)buf, (unsigned)buf_len); - - if (len != (int)buf_len) error(PREFIX(gzerror)(out, &err)); - - munmap(buf, buf_len); - fclose(in); - if (PREFIX(gzclose)(out) != Z_OK) error("failed gzclose"); - return Z_OK; -} -#endif /* USE_MMAP */ - -/* =========================================================================== - * Uncompress input to output then close both files. - */ -void gz_uncompress(gzFile in, FILE *out) -{ - char buf[BUFLENW]; - int len; - int err; - - for (;;) { - len = PREFIX(gzread)(in, buf, sizeof(buf)); - if (len < 0) error (PREFIX(gzerror)(in, &err)); - if (len == 0) break; - - if ((int)fwrite(buf, 1, (unsigned)len, out) != len) { - error("failed fwrite"); - } - } - if (fclose(out)) error("failed fclose"); - - if (PREFIX(gzclose)(in) != Z_OK) error("failed gzclose"); -} - - -/* =========================================================================== - * Compress the given file: create a corresponding .gz file and remove the - * original. - */ -void file_compress(char *file, char *mode) -{ - char outfile[MAX_NAME_LEN]; - FILE *in; - gzFile out; - - if (strlen(file) + strlen(GZ_SUFFIX) >= sizeof(outfile)) { - fprintf(stderr, "%s: filename too long\n", prog); - exit(1); - } - - snprintf(outfile, sizeof(outfile), "%s%s", file, GZ_SUFFIX); - - in = fopen(file, "rb"); - if (in == NULL) { - perror(file); - exit(1); - } - out = PREFIX(gzopen)(outfile, mode); - if (out == NULL) { - fprintf(stderr, "%s: can't gzopen %s\n", prog, outfile); - exit(1); - } - gz_compress(in, out); - - unlink(file); -} - - -/* =========================================================================== - * Uncompress the given file and remove the original. - */ -void file_uncompress(char *file) -{ - char buf[MAX_NAME_LEN]; - char *infile, *outfile; - FILE *out; - gzFile in; - size_t len = strlen(file); - - if (len + strlen(GZ_SUFFIX) >= sizeof(buf)) { - fprintf(stderr, "%s: filename too long\n", prog); - exit(1); - } - - snprintf(buf, sizeof(buf), "%s", file); - - if (len > SUFFIX_LEN && strcmp(file+len-SUFFIX_LEN, GZ_SUFFIX) == 0) { - infile = file; - outfile = buf; - outfile[len-3] = '\0'; - } else { - outfile = file; - infile = buf; - snprintf(buf + len, sizeof(buf) - len, "%s", GZ_SUFFIX); - } - in = PREFIX(gzopen)(infile, "rb"); - if (in == NULL) { - fprintf(stderr, "%s: can't gzopen %s\n", prog, infile); - exit(1); - } - out = fopen(outfile, "wb"); - if (out == NULL) { - perror(file); - exit(1); - } - - gz_uncompress(in, out); - - unlink(infile); -} - - -/* =========================================================================== - * Usage: minigzip [-c] [-d] [-f] [-h] [-r] [-1 to -9] [files...] - * -c : write to standard output - * -d : decompress - * -f : compress with Z_FILTERED - * -h : compress with Z_HUFFMAN_ONLY - * -r : compress with Z_RLE - * -0 to -9 : compression level - */ - -int main(int argc, char *argv[]) -{ - int copyout = 0; - int uncompr = 0; - gzFile file; - char *bname, outmode[20]; - - snprintf(outmode, sizeof(outmode), "%s", "wb6 "); - - prog = argv[0]; - bname = strrchr(argv[0], '/'); - if (bname) - bname++; - else - bname = argv[0]; - argc--, argv++; - - if (!strcmp(bname, "gunzip")) - uncompr = 1; - else if (!strcmp(bname, "zcat")) - copyout = uncompr = 1; - - while (argc > 0) { - if (strcmp(*argv, "-c") == 0) - copyout = 1; - else if (strcmp(*argv, "-d") == 0) - uncompr = 1; - else if (strcmp(*argv, "-f") == 0) - outmode[3] = 'f'; - else if (strcmp(*argv, "-h") == 0) - outmode[3] = 'h'; - else if (strcmp(*argv, "-r") == 0) - outmode[3] = 'R'; - else if ((*argv)[0] == '-' && (*argv)[1] >= '0' && (*argv)[1] <= '9' && - (*argv)[2] == 0) - outmode[2] = (*argv)[1]; - else - break; - argc--, argv++; - } - if (outmode[3] == ' ') - outmode[3] = 0; - if (argc == 0) { - SET_BINARY_MODE(stdin); - SET_BINARY_MODE(stdout); - if (uncompr) { - file = PREFIX(gzdopen)(fileno(stdin), "rb"); - if (file == NULL) error("can't gzdopen stdin"); - gz_uncompress(file, stdout); - } else { - file = PREFIX(gzdopen)(fileno(stdout), outmode); - if (file == NULL) error("can't gzdopen stdout"); - gz_compress(stdin, file); - } - } else { - if (copyout) { - SET_BINARY_MODE(stdout); - } - do { - if (uncompr) { - if (copyout) { - file = PREFIX(gzopen)(*argv, "rb"); - if (file == NULL) - fprintf(stderr, "%s: can't gzopen %s\n", prog, *argv); - else - gz_uncompress(file, stdout); - } else { - file_uncompress(*argv); - } - } else { - if (copyout) { - FILE * in = fopen(*argv, "rb"); - - if (in == NULL) { - perror(*argv); - } else { - file = PREFIX(gzdopen)(fileno(stdout), outmode); - if (file == NULL) error("can't gzdopen stdout"); - - gz_compress(in, file); - } - - } else { - file_compress(*argv, outmode); - } - } - } while (argv++, --argc); - } - return 0; -} diff --git a/libs/zlibng/test/testCVEinputs.sh b/libs/zlibng/test/testCVEinputs.sh deleted file mode 100644 index 8f23438d7..000000000 --- a/libs/zlibng/test/testCVEinputs.sh +++ /dev/null @@ -1,31 +0,0 @@ -#!/bin/bash -TESTDIR="$(dirname "$0")" - -# check for QEMU if QEMU_RUN is set -if [ ! -z "${QEMU_RUN}" ]; then - QEMU_VERSION=$(${QEMU_RUN} --version 2> /dev/null) - if [ -z "${QEMU_VERSION}" ]; then - echo "**** You need QEMU to run tests on non-native platform" - exit 1 - fi -fi - -CVEs="CVE-2002-0059 CVE-2004-0797 CVE-2005-1849 CVE-2005-2096" - -for CVE in $CVEs; do - fail=0 - for testcase in ${TESTDIR}/${CVE}/*.gz; do - ${QEMU_RUN} ../minigzip${EXE} -d < "$testcase" - # we expect that a 1 error code is OK - # for a vulnerable failure we'd expect 134 or similar - if [ $? -ne 1 ] && [ $? -ne 0 ]; then - fail=1 - fi - done - if [ $fail -eq 0 ]; then - echo " --- zlib not vulnerable to $CVE ---"; - else - echo " --- zlib VULNERABLE to $CVE ---"; exit 1; - fi -done - diff --git a/libs/zlibng/treebuild.xml b/libs/zlibng/treebuild.xml deleted file mode 100644 index fd75525f9..000000000 --- a/libs/zlibng/treebuild.xml +++ /dev/null @@ -1,116 +0,0 @@ - - - - zip compression library - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - diff --git a/libs/zlibng/trees.c b/libs/zlibng/trees.c deleted file mode 100644 index 53c73bde1..000000000 --- a/libs/zlibng/trees.c +++ /dev/null @@ -1,1086 +0,0 @@ -/* trees.c -- output deflated data using Huffman coding - * Copyright (C) 1995-2017 Jean-loup Gailly - * detect_data_type() function provided freely by Cosmin Truta, 2006 - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* - * ALGORITHM - * - * The "deflation" process uses several Huffman trees. The more - * common source values are represented by shorter bit sequences. - * - * Each code tree is stored in a compressed form which is itself - * a Huffman encoding of the lengths of all the code strings (in - * ascending order by source values). The actual code strings are - * reconstructed from the lengths in the inflate process, as described - * in the deflate specification. - * - * REFERENCES - * - * Deutsch, L.P.,"'Deflate' Compressed Data Format Specification". - * Available in ftp.uu.net:/pub/archiving/zip/doc/deflate-1.1.doc - * - * Storer, James A. - * Data Compression: Methods and Theory, pp. 49-50. - * Computer Science Press, 1988. ISBN 0-7167-8156-5. - * - * Sedgewick, R. - * Algorithms, p290. - * Addison-Wesley, 1983. ISBN 0-201-06672-6. - */ - -/* @(#) $Id$ */ - -/* #define GEN_TREES_H */ - -#include "zbuild.h" -#include "deflate.h" - -#ifdef ZLIB_DEBUG -# include -#endif - -/* =========================================================================== - * Constants - */ - -#define MAX_BL_BITS 7 -/* Bit length codes must not exceed MAX_BL_BITS bits */ - -#define REP_3_6 16 -/* repeat previous bit length 3-6 times (2 bits of repeat count) */ - -#define REPZ_3_10 17 -/* repeat a zero length 3-10 times (3 bits of repeat count) */ - -#define REPZ_11_138 18 -/* repeat a zero length 11-138 times (7 bits of repeat count) */ - -static const int extra_lbits[LENGTH_CODES] /* extra bits for each length code */ - = {0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0}; - -static const int extra_dbits[D_CODES] /* extra bits for each distance code */ - = {0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13}; - -static const int extra_blbits[BL_CODES] /* extra bits for each bit length code */ - = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7}; - -static const unsigned char bl_order[BL_CODES] - = {16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15}; -/* The lengths of the bit length codes are sent in order of decreasing - * probability, to avoid transmitting the lengths for unused bit length codes. - */ - -/* =========================================================================== - * Local data. These are initialized only once. - */ - -#define DIST_CODE_LEN 512 /* see definition of array dist_code below */ - -#if defined(GEN_TREES_H) -/* non ANSI compilers may not accept trees.h */ - -ZLIB_INTERNAL ct_data static_ltree[L_CODES+2]; -/* The static literal tree. Since the bit lengths are imposed, there is no - * need for the L_CODES extra codes used during heap construction. However - * The codes 286 and 287 are needed to build a canonical tree (see _tr_init - * below). - */ - -static ct_data static_dtree[D_CODES]; -/* The static distance tree. (Actually a trivial tree since all codes use - * 5 bits.) - */ - -unsigned char _dist_code[DIST_CODE_LEN]; -/* Distance codes. The first 256 values correspond to the distances - * 3 .. 258, the last 256 values correspond to the top 8 bits of - * the 15 bit distances. - */ - -unsigned char _length_code[MAX_MATCH-MIN_MATCH+1]; -/* length code for each normalized match length (0 == MIN_MATCH) */ - -static int base_length[LENGTH_CODES]; -/* First normalized length for each code (0 = MIN_MATCH) */ - -static int base_dist[D_CODES]; -/* First normalized distance for each code (0 = distance of 1) */ - -#else -# include "trees.h" -#endif /* GEN_TREES_H */ - -struct static_tree_desc_s { - const ct_data *static_tree; /* static tree or NULL */ - const int *extra_bits; /* extra bits for each code or NULL */ - int extra_base; /* base index for extra_bits */ - int elems; /* max number of elements in the tree */ - unsigned int max_length; /* max bit length for the codes */ -}; - -static const static_tree_desc static_l_desc = -{static_ltree, extra_lbits, LITERALS+1, L_CODES, MAX_BITS}; - -static const static_tree_desc static_d_desc = -{static_dtree, extra_dbits, 0, D_CODES, MAX_BITS}; - -static const static_tree_desc static_bl_desc = -{(const ct_data *)0, extra_blbits, 0, BL_CODES, MAX_BL_BITS}; - -/* =========================================================================== - * Local (static) routines in this file. - */ - -static void tr_static_init (void); -static void init_block (deflate_state *s); -static void pqdownheap (deflate_state *s, ct_data *tree, int k); -static void gen_bitlen (deflate_state *s, tree_desc *desc); -static void gen_codes (ct_data *tree, int max_code, uint16_t *bl_count); -static void build_tree (deflate_state *s, tree_desc *desc); -static void scan_tree (deflate_state *s, ct_data *tree, int max_code); -static void send_tree (deflate_state *s, ct_data *tree, int max_code); -static int build_bl_tree (deflate_state *s); -static void send_all_trees (deflate_state *s, int lcodes, int dcodes, int blcodes); -static void compress_block (deflate_state *s, const ct_data *ltree, const ct_data *dtree); -static int detect_data_type (deflate_state *s); -static void bi_flush (deflate_state *s); - -#ifdef GEN_TREES_H -static void gen_trees_header (void); -#endif - -/* =========================================================================== - * Initialize the various 'constant' tables. - */ -static void tr_static_init(void) { -#if defined(GEN_TREES_H) - static int static_init_done = 0; - int n; /* iterates over tree elements */ - int bits; /* bit counter */ - int length; /* length value */ - int code; /* code value */ - int dist; /* distance index */ - uint16_t bl_count[MAX_BITS+1]; - /* number of codes at each bit length for an optimal tree */ - - if (static_init_done) - return; - - /* For some embedded targets, global variables are not initialized: */ -#ifdef NO_INIT_GLOBAL_POINTERS - static_l_desc.static_tree = static_ltree; - static_l_desc.extra_bits = extra_lbits; - static_d_desc.static_tree = static_dtree; - static_d_desc.extra_bits = extra_dbits; - static_bl_desc.extra_bits = extra_blbits; -#endif - - /* Initialize the mapping length (0..255) -> length code (0..28) */ - length = 0; - for (code = 0; code < LENGTH_CODES-1; code++) { - base_length[code] = length; - for (n = 0; n < (1 << extra_lbits[code]); n++) { - _length_code[length++] = (unsigned char)code; - } - } - Assert(length == 256, "tr_static_init: length != 256"); - /* Note that the length 255 (match length 258) can be represented - * in two different ways: code 284 + 5 bits or code 285, so we - * overwrite length_code[255] to use the best encoding: - */ - _length_code[length-1] = (unsigned char)code; - - /* Initialize the mapping dist (0..32K) -> dist code (0..29) */ - dist = 0; - for (code = 0 ; code < 16; code++) { - base_dist[code] = dist; - for (n = 0; n < (1 << extra_dbits[code]); n++) { - _dist_code[dist++] = (unsigned char)code; - } - } - Assert(dist == 256, "tr_static_init: dist != 256"); - dist >>= 7; /* from now on, all distances are divided by 128 */ - for ( ; code < D_CODES; code++) { - base_dist[code] = dist << 7; - for (n = 0; n < (1 << (extra_dbits[code]-7)); n++) { - _dist_code[256 + dist++] = (unsigned char)code; - } - } - Assert(dist == 256, "tr_static_init: 256+dist != 512"); - - /* Construct the codes of the static literal tree */ - for (bits = 0; bits <= MAX_BITS; bits++) - bl_count[bits] = 0; - n = 0; - while (n <= 143) static_ltree[n++].Len = 8, bl_count[8]++; - while (n <= 255) static_ltree[n++].Len = 9, bl_count[9]++; - while (n <= 279) static_ltree[n++].Len = 7, bl_count[7]++; - while (n <= 287) static_ltree[n++].Len = 8, bl_count[8]++; - /* Codes 286 and 287 do not exist, but we must include them in the - * tree construction to get a canonical Huffman tree (longest code - * all ones) - */ - gen_codes((ct_data *)static_ltree, L_CODES+1, bl_count); - - /* The static distance tree is trivial: */ - for (n = 0; n < D_CODES; n++) { - static_dtree[n].Len = 5; - static_dtree[n].Code = bi_reverse((unsigned)n, 5); - } - static_init_done = 1; - -# ifdef GEN_TREES_H - gen_trees_header(); -# endif -#endif /* defined(GEN_TREES_H) */ -} - -/* =========================================================================== - * Genererate the file trees.h describing the static trees. - */ -#ifdef GEN_TREES_H -# ifndef ZLIB_DEBUG -# include -# endif - -# define SEPARATOR(i, last, width) \ - ((i) == (last)? "\n};\n\n" : \ - ((i) % (width) == (width)-1 ? ",\n" : ", ")) - -void gen_trees_header() { - FILE *header = fopen("trees.h", "w"); - int i; - - Assert(header != NULL, "Can't open trees.h"); - fprintf(header, "#ifndef TREES_H_\n"); - fprintf(header, "#define TREES_H_\n\n"); - - fprintf(header, "/* header created automatically with -DGEN_TREES_H */\n\n"); - - fprintf(header, "ZLIB_INTERNAL const ct_data static_ltree[L_CODES+2] = {\n"); - for (i = 0; i < L_CODES+2; i++) { - fprintf(header, "{{%3u},{%3u}}%s", static_ltree[i].Code, static_ltree[i].Len, SEPARATOR(i, L_CODES+1, 5)); - } - - fprintf(header, "static const ct_data static_dtree[D_CODES] = {\n"); - for (i = 0; i < D_CODES; i++) { - fprintf(header, "{{%2u},{%2u}}%s", static_dtree[i].Code, static_dtree[i].Len, SEPARATOR(i, D_CODES-1, 5)); - } - - fprintf(header, "const unsigned char ZLIB_INTERNAL _dist_code[DIST_CODE_LEN] = {\n"); - for (i = 0; i < DIST_CODE_LEN; i++) { - fprintf(header, "%2u%s", _dist_code[i], SEPARATOR(i, DIST_CODE_LEN-1, 20)); - } - - fprintf(header, "const unsigned char ZLIB_INTERNAL _length_code[MAX_MATCH-MIN_MATCH+1]= {\n"); - for (i = 0; i < MAX_MATCH-MIN_MATCH+1; i++) { - fprintf(header, "%2u%s", _length_code[i], SEPARATOR(i, MAX_MATCH-MIN_MATCH, 20)); - } - - fprintf(header, "static const int base_length[LENGTH_CODES] = {\n"); - for (i = 0; i < LENGTH_CODES; i++) { - fprintf(header, "%d%s", base_length[i], SEPARATOR(i, LENGTH_CODES-1, 20)); - } - - fprintf(header, "static const int base_dist[D_CODES] = {\n"); - for (i = 0; i < D_CODES; i++) { - fprintf(header, "%5d%s", base_dist[i], SEPARATOR(i, D_CODES-1, 10)); - } - - fprintf(header, "#endif /* TREES_H_ */\n"); - fclose(header); -} -#endif /* GEN_TREES_H */ - -/* =========================================================================== - * Initialize the tree data structures for a new zlib stream. - */ -void ZLIB_INTERNAL _tr_init(deflate_state *s) { - tr_static_init(); - - s->l_desc.dyn_tree = s->dyn_ltree; - s->l_desc.stat_desc = &static_l_desc; - - s->d_desc.dyn_tree = s->dyn_dtree; - s->d_desc.stat_desc = &static_d_desc; - - s->bl_desc.dyn_tree = s->bl_tree; - s->bl_desc.stat_desc = &static_bl_desc; - - s->bi_buf = 0; - s->bi_valid = 0; -#ifdef ZLIB_DEBUG - s->compressed_len = 0L; - s->bits_sent = 0L; -#endif - - /* Initialize the first block of the first file: */ - init_block(s); -} - -/* =========================================================================== - * Initialize a new block. - */ -static void init_block(deflate_state *s) { - int n; /* iterates over tree elements */ - - /* Initialize the trees. */ - for (n = 0; n < L_CODES; n++) - s->dyn_ltree[n].Freq = 0; - for (n = 0; n < D_CODES; n++) - s->dyn_dtree[n].Freq = 0; - for (n = 0; n < BL_CODES; n++) - s->bl_tree[n].Freq = 0; - - s->dyn_ltree[END_BLOCK].Freq = 1; - s->opt_len = s->static_len = 0L; - s->sym_next = s->matches = 0; -} - -#define SMALLEST 1 -/* Index within the heap array of least frequent node in the Huffman tree */ - - -/* =========================================================================== - * Remove the smallest element from the heap and recreate the heap with - * one less element. Updates heap and heap_len. - */ -#define pqremove(s, tree, top) \ -{\ - top = s->heap[SMALLEST]; \ - s->heap[SMALLEST] = s->heap[s->heap_len--]; \ - pqdownheap(s, tree, SMALLEST); \ -} - -/* =========================================================================== - * Compares to subtrees, using the tree depth as tie breaker when - * the subtrees have equal frequency. This minimizes the worst case length. - */ -#define smaller(tree, n, m, depth) \ - (tree[n].Freq < tree[m].Freq || \ - (tree[n].Freq == tree[m].Freq && depth[n] <= depth[m])) - -/* =========================================================================== - * Restore the heap property by moving down the tree starting at node k, - * exchanging a node with the smallest of its two sons if necessary, stopping - * when the heap property is re-established (each father smaller than its - * two sons). - */ -static void pqdownheap(deflate_state *s, ct_data *tree, int k) { - /* tree: the tree to restore */ - /* k: node to move down */ - int v = s->heap[k]; - int j = k << 1; /* left son of k */ - while (j <= s->heap_len) { - /* Set j to the smallest of the two sons: */ - if (j < s->heap_len && smaller(tree, s->heap[j+1], s->heap[j], s->depth)) { - j++; - } - /* Exit if v is smaller than both sons */ - if (smaller(tree, v, s->heap[j], s->depth)) - break; - - /* Exchange v with the smallest son */ - s->heap[k] = s->heap[j]; - k = j; - - /* And continue down the tree, setting j to the left son of k */ - j <<= 1; - } - s->heap[k] = v; -} - -/* =========================================================================== - * Compute the optimal bit lengths for a tree and update the total bit length - * for the current block. - * IN assertion: the fields freq and dad are set, heap[heap_max] and - * above are the tree nodes sorted by increasing frequency. - * OUT assertions: the field len is set to the optimal bit length, the - * array bl_count contains the frequencies for each bit length. - * The length opt_len is updated; static_len is also updated if stree is - * not null. - */ -static void gen_bitlen(deflate_state *s, tree_desc *desc) { - /* desc: the tree descriptor */ - ct_data *tree = desc->dyn_tree; - int max_code = desc->max_code; - const ct_data *stree = desc->stat_desc->static_tree; - const int *extra = desc->stat_desc->extra_bits; - int base = desc->stat_desc->extra_base; - unsigned int max_length = desc->stat_desc->max_length; - int h; /* heap index */ - int n, m; /* iterate over the tree elements */ - unsigned int bits; /* bit length */ - int xbits; /* extra bits */ - uint16_t f; /* frequency */ - int overflow = 0; /* number of elements with bit length too large */ - - for (bits = 0; bits <= MAX_BITS; bits++) - s->bl_count[bits] = 0; - - /* In a first pass, compute the optimal bit lengths (which may - * overflow in the case of the bit length tree). - */ - tree[s->heap[s->heap_max]].Len = 0; /* root of the heap */ - - for (h = s->heap_max+1; h < HEAP_SIZE; h++) { - n = s->heap[h]; - bits = tree[tree[n].Dad].Len + 1; - if (bits > max_length) - bits = max_length, overflow++; - tree[n].Len = (uint16_t)bits; - /* We overwrite tree[n].Dad which is no longer needed */ - - if (n > max_code) /* not a leaf node */ - continue; - - s->bl_count[bits]++; - xbits = 0; - if (n >= base) - xbits = extra[n-base]; - f = tree[n].Freq; - s->opt_len += (unsigned long)f * (unsigned int)(bits + xbits); - if (stree) - s->static_len += (unsigned long)f * (unsigned int)(stree[n].Len + xbits); - } - if (overflow == 0) - return; - - Tracev((stderr, "\nbit length overflow\n")); - /* This happens for example on obj2 and pic of the Calgary corpus */ - - /* Find the first bit length which could increase: */ - do { - bits = max_length-1; - while (s->bl_count[bits] == 0) - bits--; - s->bl_count[bits]--; /* move one leaf down the tree */ - s->bl_count[bits+1] += 2; /* move one overflow item as its brother */ - s->bl_count[max_length]--; - /* The brother of the overflow item also moves one step up, - * but this does not affect bl_count[max_length] - */ - overflow -= 2; - } while (overflow > 0); - - /* Now recompute all bit lengths, scanning in increasing frequency. - * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all - * lengths instead of fixing only the wrong ones. This idea is taken - * from 'ar' written by Haruhiko Okumura.) - */ - for (bits = max_length; bits != 0; bits--) { - n = s->bl_count[bits]; - while (n != 0) { - m = s->heap[--h]; - if (m > max_code) - continue; - if (tree[m].Len != bits) { - Tracev((stderr, "code %d bits %d->%u\n", m, tree[m].Len, bits)); - s->opt_len += (unsigned long)(bits * tree[m].Freq); - s->opt_len -= (unsigned long)(tree[m].Len * tree[m].Freq); - tree[m].Len = (uint16_t)bits; - } - n--; - } - } -} - -/* =========================================================================== - * Generate the codes for a given tree and bit counts (which need not be - * optimal). - * IN assertion: the array bl_count contains the bit length statistics for - * the given tree and the field len is set for all tree elements. - * OUT assertion: the field code is set for all tree elements of non - * zero code length. - */ -static void gen_codes(ct_data *tree, int max_code, uint16_t *bl_count) { - /* tree: the tree to decorate */ - /* max_code: largest code with non zero frequency */ - /* bl_count: number of codes at each bit length */ - uint16_t next_code[MAX_BITS+1]; /* next code value for each bit length */ - unsigned int code = 0; /* running code value */ - int bits; /* bit index */ - int n; /* code index */ - - /* The distribution counts are first used to generate the code values - * without bit reversal. - */ - for (bits = 1; bits <= MAX_BITS; bits++) { - code = (code + bl_count[bits-1]) << 1; - next_code[bits] = (uint16_t)code; - } - /* Check that the bit counts in bl_count are consistent. The last code - * must be all ones. - */ - Assert(code + bl_count[MAX_BITS]-1 == (1 << MAX_BITS)-1, "inconsistent bit counts"); - Tracev((stderr, "\ngen_codes: max_code %d ", max_code)); - - for (n = 0; n <= max_code; n++) { - int len = tree[n].Len; - if (len == 0) - continue; - /* Now reverse the bits */ - tree[n].Code = (uint16_t)bi_reverse(next_code[len]++, len); - - Tracecv(tree != static_ltree, (stderr, "\nn %3d %c l %2d c %4x (%x) ", - n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1)); - } -} - -/* =========================================================================== - * Construct one Huffman tree and assigns the code bit strings and lengths. - * Update the total bit length for the current block. - * IN assertion: the field freq is set for all tree elements. - * OUT assertions: the fields len and code are set to the optimal bit length - * and corresponding code. The length opt_len is updated; static_len is - * also updated if stree is not null. The field max_code is set. - */ -static void build_tree(deflate_state *s, tree_desc *desc) { - /* desc: the tree descriptor */ - ct_data *tree = desc->dyn_tree; - const ct_data *stree = desc->stat_desc->static_tree; - int elems = desc->stat_desc->elems; - int n, m; /* iterate over heap elements */ - int max_code = -1; /* largest code with non zero frequency */ - int node; /* new node being created */ - - /* Construct the initial heap, with least frequent element in - * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1]. - * heap[0] is not used. - */ - s->heap_len = 0, s->heap_max = HEAP_SIZE; - - for (n = 0; n < elems; n++) { - if (tree[n].Freq != 0) { - s->heap[++(s->heap_len)] = max_code = n; - s->depth[n] = 0; - } else { - tree[n].Len = 0; - } - } - - /* The pkzip format requires that at least one distance code exists, - * and that at least one bit should be sent even if there is only one - * possible code. So to avoid special checks later on we force at least - * two codes of non zero frequency. - */ - while (s->heap_len < 2) { - node = s->heap[++(s->heap_len)] = (max_code < 2 ? ++max_code : 0); - tree[node].Freq = 1; - s->depth[node] = 0; - s->opt_len--; - if (stree) - s->static_len -= stree[node].Len; - /* node is 0 or 1 so it does not have extra bits */ - } - desc->max_code = max_code; - - /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree, - * establish sub-heaps of increasing lengths: - */ - for (n = s->heap_len/2; n >= 1; n--) - pqdownheap(s, tree, n); - - /* Construct the Huffman tree by repeatedly combining the least two - * frequent nodes. - */ - node = elems; /* next internal node of the tree */ - do { - pqremove(s, tree, n); /* n = node of least frequency */ - m = s->heap[SMALLEST]; /* m = node of next least frequency */ - - s->heap[--(s->heap_max)] = n; /* keep the nodes sorted by frequency */ - s->heap[--(s->heap_max)] = m; - - /* Create a new node father of n and m */ - tree[node].Freq = tree[n].Freq + tree[m].Freq; - s->depth[node] = (unsigned char)((s->depth[n] >= s->depth[m] ? - s->depth[n] : s->depth[m]) + 1); - tree[n].Dad = tree[m].Dad = (uint16_t)node; -#ifdef DUMP_BL_TREE - if (tree == s->bl_tree) { - fprintf(stderr, "\nnode %d(%d), sons %d(%d) %d(%d)", - node, tree[node].Freq, n, tree[n].Freq, m, tree[m].Freq); - } -#endif - /* and insert the new node in the heap */ - s->heap[SMALLEST] = node++; - pqdownheap(s, tree, SMALLEST); - } while (s->heap_len >= 2); - - s->heap[--(s->heap_max)] = s->heap[SMALLEST]; - - /* At this point, the fields freq and dad are set. We can now - * generate the bit lengths. - */ - gen_bitlen(s, (tree_desc *)desc); - - /* The field len is now set, we can generate the bit codes */ - gen_codes((ct_data *)tree, max_code, s->bl_count); -} - -/* =========================================================================== - * Scan a literal or distance tree to determine the frequencies of the codes - * in the bit length tree. - */ -static void scan_tree(deflate_state *s, ct_data *tree, int max_code) { - /* tree: the tree to be scanned */ - /* max_code: and its largest code of non zero frequency */ - int n; /* iterates over all tree elements */ - int prevlen = -1; /* last emitted length */ - int curlen; /* length of current code */ - int nextlen = tree[0].Len; /* length of next code */ - int count = 0; /* repeat count of the current code */ - int max_count = 7; /* max repeat count */ - int min_count = 4; /* min repeat count */ - - if (nextlen == 0) - max_count = 138, min_count = 3; - - tree[max_code+1].Len = (uint16_t)0xffff; /* guard */ - - for (n = 0; n <= max_code; n++) { - curlen = nextlen; - nextlen = tree[n+1].Len; - if (++count < max_count && curlen == nextlen) { - continue; - } else if (count < min_count) { - s->bl_tree[curlen].Freq += count; - } else if (curlen != 0) { - if (curlen != prevlen) - s->bl_tree[curlen].Freq++; - s->bl_tree[REP_3_6].Freq++; - } else if (count <= 10) { - s->bl_tree[REPZ_3_10].Freq++; - } else { - s->bl_tree[REPZ_11_138].Freq++; - } - count = 0; - prevlen = curlen; - if (nextlen == 0) { - max_count = 138, min_count = 3; - } else if (curlen == nextlen) { - max_count = 6, min_count = 3; - } else { - max_count = 7, min_count = 4; - } - } -} - -/* =========================================================================== - * Send a literal or distance tree in compressed form, using the codes in - * bl_tree. - */ -static void send_tree(deflate_state *s, ct_data *tree, int max_code) { - /* tree: the tree to be scanned */ - /* max_code and its largest code of non zero frequency */ - int n; /* iterates over all tree elements */ - int prevlen = -1; /* last emitted length */ - int curlen; /* length of current code */ - int nextlen = tree[0].Len; /* length of next code */ - int count = 0; /* repeat count of the current code */ - int max_count = 7; /* max repeat count */ - int min_count = 4; /* min repeat count */ - - /* tree[max_code+1].Len = -1; */ /* guard already set */ - if (nextlen == 0) - max_count = 138, min_count = 3; - - for (n = 0; n <= max_code; n++) { - curlen = nextlen; - nextlen = tree[n+1].Len; - if (++count < max_count && curlen == nextlen) { - continue; - } else if (count < min_count) { - do { - send_code(s, curlen, s->bl_tree); - } while (--count != 0); - - } else if (curlen != 0) { - if (curlen != prevlen) { - send_code(s, curlen, s->bl_tree); - count--; - } - Assert(count >= 3 && count <= 6, " 3_6?"); - send_code(s, REP_3_6, s->bl_tree); - send_bits(s, count-3, 2); - - } else if (count <= 10) { - send_code(s, REPZ_3_10, s->bl_tree); - send_bits(s, count-3, 3); - - } else { - send_code(s, REPZ_11_138, s->bl_tree); - send_bits(s, count-11, 7); - } - count = 0; - prevlen = curlen; - if (nextlen == 0) { - max_count = 138, min_count = 3; - } else if (curlen == nextlen) { - max_count = 6, min_count = 3; - } else { - max_count = 7, min_count = 4; - } - } -} - -/* =========================================================================== - * Construct the Huffman tree for the bit lengths and return the index in - * bl_order of the last bit length code to send. - */ -static int build_bl_tree(deflate_state *s) { - int max_blindex; /* index of last bit length code of non zero freq */ - - /* Determine the bit length frequencies for literal and distance trees */ - scan_tree(s, (ct_data *)s->dyn_ltree, s->l_desc.max_code); - scan_tree(s, (ct_data *)s->dyn_dtree, s->d_desc.max_code); - - /* Build the bit length tree: */ - build_tree(s, (tree_desc *)(&(s->bl_desc))); - /* opt_len now includes the length of the tree representations, except - * the lengths of the bit lengths codes and the 5+5+4 bits for the counts. - */ - - /* Determine the number of bit length codes to send. The pkzip format - * requires that at least 4 bit length codes be sent. (appnote.txt says - * 3 but the actual value used is 4.) - */ - for (max_blindex = BL_CODES-1; max_blindex >= 3; max_blindex--) { - if (s->bl_tree[bl_order[max_blindex]].Len != 0) - break; - } - /* Update opt_len to include the bit length tree and counts */ - s->opt_len += 3*((unsigned long)max_blindex+1) + 5+5+4; - Tracev((stderr, "\ndyn trees: dyn %lu, stat %lu", s->opt_len, s->static_len)); - - return max_blindex; -} - -/* =========================================================================== - * Send the header for a block using dynamic Huffman trees: the counts, the - * lengths of the bit length codes, the literal tree and the distance tree. - * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4. - */ -static void send_all_trees(deflate_state *s, int lcodes, int dcodes, int blcodes) { - int rank; /* index in bl_order */ - - Assert(lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes"); - Assert(lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES, "too many codes"); - Tracev((stderr, "\nbl counts: ")); - send_bits(s, lcodes-257, 5); /* not +255 as stated in appnote.txt */ - send_bits(s, dcodes-1, 5); - send_bits(s, blcodes-4, 4); /* not -3 as stated in appnote.txt */ - for (rank = 0; rank < blcodes; rank++) { - Tracev((stderr, "\nbl code %2u ", bl_order[rank])); - send_bits(s, s->bl_tree[bl_order[rank]].Len, 3); - } - Tracev((stderr, "\nbl tree: sent %lu", s->bits_sent)); - - send_tree(s, (ct_data *)s->dyn_ltree, lcodes-1); /* literal tree */ - Tracev((stderr, "\nlit tree: sent %lu", s->bits_sent)); - - send_tree(s, (ct_data *)s->dyn_dtree, dcodes-1); /* distance tree */ - Tracev((stderr, "\ndist tree: sent %lu", s->bits_sent)); -} - -/* =========================================================================== - * Send a stored block - */ -void ZLIB_INTERNAL _tr_stored_block(deflate_state *s, char *buf, unsigned long stored_len, int last) { - /* buf: input block */ - /* stored_len: length of input block */ - /* last: one if this is the last block for a file */ - send_bits(s, (STORED_BLOCK << 1)+last, 3); /* send block type */ - bi_windup(s); /* align on byte boundary */ - put_short(s, (uint16_t)stored_len); - put_short(s, (uint16_t)~stored_len); - if (stored_len) - memcpy(s->pending_buf + s->pending, (unsigned char *)buf, stored_len); - s->pending += stored_len; -#ifdef ZLIB_DEBUG - s->compressed_len = (s->compressed_len + 3 + 7) & (unsigned long)~7L; - s->compressed_len += (stored_len + 4) << 3; - s->bits_sent += 2*16; - s->bits_sent += stored_len<<3; -#endif -} - -/* =========================================================================== - * Flush the bits in the bit buffer to pending output (leaves at most 7 bits) - */ -void ZLIB_INTERNAL _tr_flush_bits(deflate_state *s) { - bi_flush(s); -} - -/* =========================================================================== - * Send one empty static block to give enough lookahead for inflate. - * This takes 10 bits, of which 7 may remain in the bit buffer. - */ -void ZLIB_INTERNAL _tr_align(deflate_state *s) { - send_bits(s, STATIC_TREES << 1, 3); - send_code(s, END_BLOCK, static_ltree); -#ifdef ZLIB_DEBUG - s->compressed_len += 10L; /* 3 for block type, 7 for EOB */ -#endif - bi_flush(s); -} - -/* =========================================================================== - * Determine the best encoding for the current block: dynamic trees, static - * trees or store, and write out the encoded block. - */ -void ZLIB_INTERNAL _tr_flush_block(deflate_state *s, char *buf, unsigned long stored_len, int last) { - /* buf: input block, or NULL if too old */ - /* stored_len: length of input block */ - /* last: one if this is the last block for a file */ - unsigned long opt_lenb, static_lenb; /* opt_len and static_len in bytes */ - int max_blindex = 0; /* index of last bit length code of non zero freq */ - - /* Build the Huffman trees unless a stored block is forced */ - if (s->level > 0) { - /* Check if the file is binary or text */ - if (s->strm->data_type == Z_UNKNOWN) - s->strm->data_type = detect_data_type(s); - - /* Construct the literal and distance trees */ - build_tree(s, (tree_desc *)(&(s->l_desc))); - Tracev((stderr, "\nlit data: dyn %lu, stat %lu", s->opt_len, s->static_len)); - - build_tree(s, (tree_desc *)(&(s->d_desc))); - Tracev((stderr, "\ndist data: dyn %lu, stat %lu", s->opt_len, s->static_len)); - /* At this point, opt_len and static_len are the total bit lengths of - * the compressed block data, excluding the tree representations. - */ - - /* Build the bit length tree for the above two trees, and get the index - * in bl_order of the last bit length code to send. - */ - max_blindex = build_bl_tree(s); - - /* Determine the best encoding. Compute the block lengths in bytes. */ - opt_lenb = (s->opt_len+3+7) >> 3; - static_lenb = (s->static_len+3+7) >> 3; - - Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ", - opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len, - s->sym_next / 3)); - - if (static_lenb <= opt_lenb) - opt_lenb = static_lenb; - - } else { - Assert(buf != NULL, "lost buf"); - opt_lenb = static_lenb = stored_len + 5; /* force a stored block */ - } - -#ifdef FORCE_STORED - if (buf != NULL) { /* force stored block */ -#else - if (stored_len+4 <= opt_lenb && buf != NULL) { - /* 4: two words for the lengths */ -#endif - /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE. - * Otherwise we can't have processed more than WSIZE input bytes since - * the last block flush, because compression would have been - * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to - * transform a block into a stored block. - */ - _tr_stored_block(s, buf, stored_len, last); - -#ifdef FORCE_STATIC - } else if (static_lenb >= 0) { /* force static trees */ -#else - } else if (s->strategy == Z_FIXED || static_lenb == opt_lenb) { -#endif - send_bits(s, (STATIC_TREES << 1)+last, 3); - compress_block(s, (const ct_data *)static_ltree, (const ct_data *)static_dtree); -#ifdef ZLIB_DEBUG - s->compressed_len += 3 + s->static_len; -#endif - } else { - send_bits(s, (DYN_TREES << 1)+last, 3); - send_all_trees(s, s->l_desc.max_code+1, s->d_desc.max_code+1, max_blindex+1); - compress_block(s, (const ct_data *)s->dyn_ltree, (const ct_data *)s->dyn_dtree); -#ifdef ZLIB_DEBUG - s->compressed_len += 3 + s->opt_len; -#endif - } - Assert(s->compressed_len == s->bits_sent, "bad compressed size"); - /* The above check is made mod 2^32, for files larger than 512 MB - * and unsigned long implemented on 32 bits. - */ - init_block(s); - - if (last) { - bi_windup(s); -#ifdef ZLIB_DEBUG - s->compressed_len += 7; /* align on byte boundary */ -#endif - } - Tracev((stderr, "\ncomprlen %lu(%lu) ", s->compressed_len>>3, s->compressed_len-7*last)); -} - -/* =========================================================================== - * Save the match info and tally the frequency counts. Return true if - * the current block must be flushed. - */ -int ZLIB_INTERNAL _tr_tally(deflate_state *s, unsigned dist, unsigned lc) { - /* dist: distance of matched string */ - /* lc: match length-MIN_MATCH or unmatched char (if dist==0) */ - s->sym_buf[s->sym_next++] = dist; - s->sym_buf[s->sym_next++] = dist >> 8; - s->sym_buf[s->sym_next++] = lc; - if (dist == 0) { - /* lc is the unmatched char */ - s->dyn_ltree[lc].Freq++; - } else { - s->matches++; - /* Here, lc is the match length - MIN_MATCH */ - dist--; /* dist = match distance - 1 */ - Assert((uint16_t)dist < (uint16_t)MAX_DIST(s) && - (uint16_t)lc <= (uint16_t)(MAX_MATCH-MIN_MATCH) && - (uint16_t)d_code(dist) < (uint16_t)D_CODES, "_tr_tally: bad match"); - - s->dyn_ltree[_length_code[lc]+LITERALS+1].Freq++; - s->dyn_dtree[d_code(dist)].Freq++; - } - return (s->sym_next == s->sym_end); -} - -/* =========================================================================== - * Send the block data compressed using the given Huffman trees - */ -static void compress_block(deflate_state *s, const ct_data *ltree, const ct_data *dtree) { - /* ltree: literal tree */ - /* dtree: distance tree */ - unsigned dist; /* distance of matched string */ - int lc; /* match length or unmatched char (if dist == 0) */ - unsigned sx = 0; /* running index in sym_buf */ - int code; /* the code to send */ - int extra; /* number of extra bits to send */ - - if (s->sym_next != 0) { - do { - dist = s->sym_buf[sx++] & 0xff; - dist += (unsigned)(s->sym_buf[sx++] & 0xff) << 8; - lc = s->sym_buf[sx++]; - if (dist == 0) { - send_code(s, lc, ltree); /* send a literal byte */ - Tracecv(isgraph(lc), (stderr, " '%c' ", lc)); - } else { - /* Here, lc is the match length - MIN_MATCH */ - code = _length_code[lc]; - send_code(s, code+LITERALS+1, ltree); /* send the length code */ - extra = extra_lbits[code]; - if (extra != 0) { - lc -= base_length[code]; - send_bits(s, lc, extra); /* send the extra length bits */ - } - dist--; /* dist is now the match distance - 1 */ - code = d_code(dist); - Assert(code < D_CODES, "bad d_code"); - - send_code(s, code, dtree); /* send the distance code */ - extra = extra_dbits[code]; - if (extra != 0) { - dist -= (unsigned int)base_dist[code]; - send_bits(s, dist, extra); /* send the extra distance bits */ - } - } /* literal or match pair ? */ - - /* Check that the overlay between pending_buf and sym_buf is ok: */ - Assert(s->pending < s->lit_bufsize + sx, "pendingBuf overflow"); - } while (sx < s->sym_next); - } - - send_code(s, END_BLOCK, ltree); -} - -/* =========================================================================== - * Check if the data type is TEXT or BINARY, using the following algorithm: - * - TEXT if the two conditions below are satisfied: - * a) There are no non-portable control characters belonging to the - * "black list" (0..6, 14..25, 28..31). - * b) There is at least one printable character belonging to the - * "white list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255). - * - BINARY otherwise. - * - The following partially-portable control characters form a - * "gray list" that is ignored in this detection algorithm: - * (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}). - * IN assertion: the fields Freq of dyn_ltree are set. - */ -static int detect_data_type(deflate_state *s) { - /* black_mask is the bit mask of black-listed bytes - * set bits 0..6, 14..25, and 28..31 - * 0xf3ffc07f = binary 11110011111111111100000001111111 - */ - unsigned long black_mask = 0xf3ffc07fUL; - int n; - - /* Check for non-textual ("black-listed") bytes. */ - for (n = 0; n <= 31; n++, black_mask >>= 1) - if ((black_mask & 1) && (s->dyn_ltree[n].Freq != 0)) - return Z_BINARY; - - /* Check for textual ("white-listed") bytes. */ - if (s->dyn_ltree[9].Freq != 0 || s->dyn_ltree[10].Freq != 0 || s->dyn_ltree[13].Freq != 0) - return Z_TEXT; - for (n = 32; n < LITERALS; n++) - if (s->dyn_ltree[n].Freq != 0) - return Z_TEXT; - - /* There are no "black-listed" or "white-listed" bytes: - * this stream either is empty or has tolerated ("gray-listed") bytes only. - */ - return Z_BINARY; -} - -/* =========================================================================== - * Reverse the first len bits of a code, using straightforward code (a faster - * method would use a table) - * IN assertion: 1 <= len <= 15 - */ -ZLIB_INTERNAL unsigned bi_reverse(unsigned code, int len) { - /* code: the value to invert */ - /* len: its bit length */ - register unsigned res = 0; - do { - res |= code & 1; - code >>= 1, res <<= 1; - } while (--len > 0); - return res >> 1; -} - -/* =========================================================================== - * Flush the bit buffer, keeping at most 7 bits in it. - */ -static void bi_flush(deflate_state *s) { - if (s->bi_valid == 16) { - put_short(s, s->bi_buf); - s->bi_buf = 0; - s->bi_valid = 0; - } else if (s->bi_valid >= 8) { - put_byte(s, (unsigned char)s->bi_buf); - s->bi_buf >>= 8; - s->bi_valid -= 8; - } -} - -/* =========================================================================== - * Flush the bit buffer and align the output on a byte boundary - */ -ZLIB_INTERNAL void bi_windup(deflate_state *s) { - if (s->bi_valid > 8) { - put_short(s, s->bi_buf); - } else if (s->bi_valid > 0) { - put_byte(s, (unsigned char)s->bi_buf); - } - s->bi_buf = 0; - s->bi_valid = 0; -#ifdef ZLIB_DEBUG - s->bits_sent = (s->bits_sent+7) & ~7; -#endif -} diff --git a/libs/zlibng/trees.h b/libs/zlibng/trees.h deleted file mode 100644 index 6fc1c8485..000000000 --- a/libs/zlibng/trees.h +++ /dev/null @@ -1,132 +0,0 @@ -#ifndef TREES_H_ -#define TREES_H_ - -/* header created automatically with -DGEN_TREES_H */ - -ZLIB_INTERNAL const ct_data static_ltree[L_CODES+2] = { -{{ 12},{ 8}}, {{140},{ 8}}, {{ 76},{ 8}}, {{204},{ 8}}, {{ 44},{ 8}}, -{{172},{ 8}}, {{108},{ 8}}, {{236},{ 8}}, {{ 28},{ 8}}, {{156},{ 8}}, -{{ 92},{ 8}}, {{220},{ 8}}, {{ 60},{ 8}}, {{188},{ 8}}, {{124},{ 8}}, -{{252},{ 8}}, {{ 2},{ 8}}, {{130},{ 8}}, {{ 66},{ 8}}, {{194},{ 8}}, -{{ 34},{ 8}}, {{162},{ 8}}, {{ 98},{ 8}}, {{226},{ 8}}, {{ 18},{ 8}}, -{{146},{ 8}}, {{ 82},{ 8}}, {{210},{ 8}}, {{ 50},{ 8}}, {{178},{ 8}}, -{{114},{ 8}}, {{242},{ 8}}, {{ 10},{ 8}}, {{138},{ 8}}, {{ 74},{ 8}}, -{{202},{ 8}}, {{ 42},{ 8}}, {{170},{ 8}}, {{106},{ 8}}, {{234},{ 8}}, -{{ 26},{ 8}}, {{154},{ 8}}, {{ 90},{ 8}}, {{218},{ 8}}, {{ 58},{ 8}}, -{{186},{ 8}}, {{122},{ 8}}, {{250},{ 8}}, {{ 6},{ 8}}, {{134},{ 8}}, -{{ 70},{ 8}}, {{198},{ 8}}, {{ 38},{ 8}}, {{166},{ 8}}, {{102},{ 8}}, -{{230},{ 8}}, {{ 22},{ 8}}, {{150},{ 8}}, {{ 86},{ 8}}, {{214},{ 8}}, -{{ 54},{ 8}}, {{182},{ 8}}, {{118},{ 8}}, {{246},{ 8}}, {{ 14},{ 8}}, -{{142},{ 8}}, {{ 78},{ 8}}, {{206},{ 8}}, {{ 46},{ 8}}, {{174},{ 8}}, -{{110},{ 8}}, {{238},{ 8}}, {{ 30},{ 8}}, {{158},{ 8}}, {{ 94},{ 8}}, -{{222},{ 8}}, {{ 62},{ 8}}, {{190},{ 8}}, {{126},{ 8}}, {{254},{ 8}}, -{{ 1},{ 8}}, {{129},{ 8}}, {{ 65},{ 8}}, {{193},{ 8}}, {{ 33},{ 8}}, -{{161},{ 8}}, {{ 97},{ 8}}, {{225},{ 8}}, {{ 17},{ 8}}, {{145},{ 8}}, -{{ 81},{ 8}}, {{209},{ 8}}, {{ 49},{ 8}}, {{177},{ 8}}, {{113},{ 8}}, -{{241},{ 8}}, {{ 9},{ 8}}, {{137},{ 8}}, {{ 73},{ 8}}, {{201},{ 8}}, -{{ 41},{ 8}}, {{169},{ 8}}, {{105},{ 8}}, {{233},{ 8}}, {{ 25},{ 8}}, -{{153},{ 8}}, {{ 89},{ 8}}, {{217},{ 8}}, {{ 57},{ 8}}, {{185},{ 8}}, -{{121},{ 8}}, {{249},{ 8}}, {{ 5},{ 8}}, {{133},{ 8}}, {{ 69},{ 8}}, -{{197},{ 8}}, {{ 37},{ 8}}, {{165},{ 8}}, {{101},{ 8}}, {{229},{ 8}}, -{{ 21},{ 8}}, {{149},{ 8}}, {{ 85},{ 8}}, {{213},{ 8}}, {{ 53},{ 8}}, -{{181},{ 8}}, {{117},{ 8}}, {{245},{ 8}}, {{ 13},{ 8}}, {{141},{ 8}}, -{{ 77},{ 8}}, {{205},{ 8}}, {{ 45},{ 8}}, {{173},{ 8}}, {{109},{ 8}}, -{{237},{ 8}}, {{ 29},{ 8}}, {{157},{ 8}}, {{ 93},{ 8}}, {{221},{ 8}}, -{{ 61},{ 8}}, {{189},{ 8}}, {{125},{ 8}}, {{253},{ 8}}, {{ 19},{ 9}}, -{{275},{ 9}}, {{147},{ 9}}, {{403},{ 9}}, {{ 83},{ 9}}, {{339},{ 9}}, -{{211},{ 9}}, {{467},{ 9}}, {{ 51},{ 9}}, {{307},{ 9}}, {{179},{ 9}}, -{{435},{ 9}}, {{115},{ 9}}, {{371},{ 9}}, {{243},{ 9}}, {{499},{ 9}}, -{{ 11},{ 9}}, {{267},{ 9}}, {{139},{ 9}}, {{395},{ 9}}, {{ 75},{ 9}}, -{{331},{ 9}}, {{203},{ 9}}, {{459},{ 9}}, {{ 43},{ 9}}, {{299},{ 9}}, -{{171},{ 9}}, {{427},{ 9}}, {{107},{ 9}}, {{363},{ 9}}, {{235},{ 9}}, -{{491},{ 9}}, {{ 27},{ 9}}, {{283},{ 9}}, {{155},{ 9}}, {{411},{ 9}}, -{{ 91},{ 9}}, {{347},{ 9}}, {{219},{ 9}}, {{475},{ 9}}, {{ 59},{ 9}}, -{{315},{ 9}}, {{187},{ 9}}, {{443},{ 9}}, {{123},{ 9}}, {{379},{ 9}}, -{{251},{ 9}}, {{507},{ 9}}, {{ 7},{ 9}}, {{263},{ 9}}, {{135},{ 9}}, -{{391},{ 9}}, {{ 71},{ 9}}, {{327},{ 9}}, {{199},{ 9}}, {{455},{ 9}}, -{{ 39},{ 9}}, {{295},{ 9}}, {{167},{ 9}}, {{423},{ 9}}, {{103},{ 9}}, -{{359},{ 9}}, {{231},{ 9}}, {{487},{ 9}}, {{ 23},{ 9}}, {{279},{ 9}}, -{{151},{ 9}}, {{407},{ 9}}, {{ 87},{ 9}}, {{343},{ 9}}, {{215},{ 9}}, -{{471},{ 9}}, {{ 55},{ 9}}, {{311},{ 9}}, {{183},{ 9}}, {{439},{ 9}}, -{{119},{ 9}}, {{375},{ 9}}, {{247},{ 9}}, {{503},{ 9}}, {{ 15},{ 9}}, -{{271},{ 9}}, {{143},{ 9}}, {{399},{ 9}}, {{ 79},{ 9}}, {{335},{ 9}}, -{{207},{ 9}}, {{463},{ 9}}, {{ 47},{ 9}}, {{303},{ 9}}, {{175},{ 9}}, -{{431},{ 9}}, {{111},{ 9}}, {{367},{ 9}}, {{239},{ 9}}, {{495},{ 9}}, -{{ 31},{ 9}}, {{287},{ 9}}, {{159},{ 9}}, {{415},{ 9}}, {{ 95},{ 9}}, -{{351},{ 9}}, {{223},{ 9}}, {{479},{ 9}}, {{ 63},{ 9}}, {{319},{ 9}}, -{{191},{ 9}}, {{447},{ 9}}, {{127},{ 9}}, {{383},{ 9}}, {{255},{ 9}}, -{{511},{ 9}}, {{ 0},{ 7}}, {{ 64},{ 7}}, {{ 32},{ 7}}, {{ 96},{ 7}}, -{{ 16},{ 7}}, {{ 80},{ 7}}, {{ 48},{ 7}}, {{112},{ 7}}, {{ 8},{ 7}}, -{{ 72},{ 7}}, {{ 40},{ 7}}, {{104},{ 7}}, {{ 24},{ 7}}, {{ 88},{ 7}}, -{{ 56},{ 7}}, {{120},{ 7}}, {{ 4},{ 7}}, {{ 68},{ 7}}, {{ 36},{ 7}}, -{{100},{ 7}}, {{ 20},{ 7}}, {{ 84},{ 7}}, {{ 52},{ 7}}, {{116},{ 7}}, -{{ 3},{ 8}}, {{131},{ 8}}, {{ 67},{ 8}}, {{195},{ 8}}, {{ 35},{ 8}}, -{{163},{ 8}}, {{ 99},{ 8}}, {{227},{ 8}} -}; - -static const ct_data static_dtree[D_CODES] = { -{{ 0},{ 5}}, {{16},{ 5}}, {{ 8},{ 5}}, {{24},{ 5}}, {{ 4},{ 5}}, -{{20},{ 5}}, {{12},{ 5}}, {{28},{ 5}}, {{ 2},{ 5}}, {{18},{ 5}}, -{{10},{ 5}}, {{26},{ 5}}, {{ 6},{ 5}}, {{22},{ 5}}, {{14},{ 5}}, -{{30},{ 5}}, {{ 1},{ 5}}, {{17},{ 5}}, {{ 9},{ 5}}, {{25},{ 5}}, -{{ 5},{ 5}}, {{21},{ 5}}, {{13},{ 5}}, {{29},{ 5}}, {{ 3},{ 5}}, -{{19},{ 5}}, {{11},{ 5}}, {{27},{ 5}}, {{ 7},{ 5}}, {{23},{ 5}} -}; - -const unsigned char ZLIB_INTERNAL _dist_code[DIST_CODE_LEN] = { - 0, 1, 2, 3, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, - 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, -10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, -11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, -12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, -13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, -13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, -14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, -14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, -14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, -15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, -15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, -15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 0, 0, 16, 17, -18, 18, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22, -23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, -24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, -26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, -26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, -27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, -27, 27, 27, 27, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, -28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, -28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, -28, 28, 28, 28, 28, 28, 28, 28, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, -29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, -29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, -29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29 -}; - -const unsigned char ZLIB_INTERNAL _length_code[MAX_MATCH-MIN_MATCH+1]= { - 0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 12, 12, -13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16, -17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19, -19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, -21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22, -22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23, -23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, -24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, -25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, -25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26, 26, 26, -26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, -26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, -27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 28 -}; - -static const int base_length[LENGTH_CODES] = { -0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56, -64, 80, 96, 112, 128, 160, 192, 224, 0 -}; - -static const int base_dist[D_CODES] = { - 0, 1, 2, 3, 4, 6, 8, 12, 16, 24, - 32, 48, 64, 96, 128, 192, 256, 384, 512, 768, - 1024, 1536, 2048, 3072, 4096, 6144, 8192, 12288, 16384, 24576 -}; - -#endif /* TREES_H_ */ diff --git a/libs/zlibng/uncompr.c b/libs/zlibng/uncompr.c deleted file mode 100644 index 9f0ac2a0c..000000000 --- a/libs/zlibng/uncompr.c +++ /dev/null @@ -1,89 +0,0 @@ -/* uncompr.c -- decompress a memory buffer - * Copyright (C) 1995-2003, 2010, 2014, 2016 Jean-loup Gailly, Mark Adler. - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* @(#) $Id$ */ - -#define ZLIB_INTERNAL -#include "zbuild.h" -#ifdef ZLIB_COMPAT -# include "zlib.h" -#else -# include "zlib-ng.h" -#endif - -/* =========================================================================== - Decompresses the source buffer into the destination buffer. *sourceLen is - the byte length of the source buffer. Upon entry, *destLen is the total size - of the destination buffer, which must be large enough to hold the entire - uncompressed data. (The size of the uncompressed data must have been saved - previously by the compressor and transmitted to the decompressor by some - mechanism outside the scope of this compression library.) Upon exit, - *destLen is the size of the decompressed data and *sourceLen is the number - of source bytes consumed. Upon return, source + *sourceLen points to the - first unused input byte. - - uncompress returns Z_OK if success, Z_MEM_ERROR if there was not enough - memory, Z_BUF_ERROR if there was not enough room in the output buffer, or - Z_DATA_ERROR if the input data was corrupted, including if the input data is - an incomplete zlib stream. -*/ -int ZEXPORT PREFIX(uncompress2)(unsigned char *dest, z_size_t *destLen, const unsigned char *source, z_size_t *sourceLen) { - PREFIX3(stream) stream; - int err; - const unsigned int max = (unsigned int)-1; - z_size_t len, left; - unsigned char buf[1]; /* for detection of incomplete stream when *destLen == 0 */ - - len = *sourceLen; - if (*destLen) { - left = *destLen; - *destLen = 0; - } - else { - left = 1; - dest = buf; - } - - stream.next_in = (const unsigned char *)source; - stream.avail_in = 0; - stream.zalloc = NULL; - stream.zfree = NULL; - stream.opaque = NULL; - - err = PREFIX(inflateInit)(&stream); - if (err != Z_OK) return err; - - stream.next_out = dest; - stream.avail_out = 0; - - do { - if (stream.avail_out == 0) { - stream.avail_out = left > (unsigned long)max ? max : (unsigned int)left; - left -= stream.avail_out; - } - if (stream.avail_in == 0) { - stream.avail_in = len > (unsigned long)max ? max : (unsigned int)len; - len -= stream.avail_in; - } - err = PREFIX(inflate)(&stream, Z_NO_FLUSH); - } while (err == Z_OK); - - *sourceLen -= len + stream.avail_in; - if (dest != buf) - *destLen = (z_size_t)stream.total_out; - else if (stream.total_out && err == Z_BUF_ERROR) - left = 1; - - PREFIX(inflateEnd)(&stream); - return err == Z_STREAM_END ? Z_OK : - err == Z_NEED_DICT ? Z_DATA_ERROR : - err == Z_BUF_ERROR && left + stream.avail_out ? Z_DATA_ERROR : - err; -} - -int ZEXPORT PREFIX(uncompress)(unsigned char *dest, z_size_t *destLen, const unsigned char *source, z_size_t sourceLen) -{ - return PREFIX(uncompress2)(dest, destLen, source, &sourceLen); -} diff --git a/libs/zlibng/win32/DLL_FAQ.txt b/libs/zlibng/win32/DLL_FAQ.txt deleted file mode 100644 index 12c009018..000000000 --- a/libs/zlibng/win32/DLL_FAQ.txt +++ /dev/null @@ -1,397 +0,0 @@ - - Frequently Asked Questions about ZLIB1.DLL - - -This document describes the design, the rationale, and the usage -of the official DLL build of zlib, named ZLIB1.DLL. If you have -general questions about zlib, you should see the file "FAQ" found -in the zlib distribution, or at the following location: - http://www.gzip.org/zlib/zlib_faq.html - - - 1. What is ZLIB1.DLL, and how can I get it? - - - ZLIB1.DLL is the official build of zlib as a DLL. - (Please remark the character '1' in the name.) - - Pointers to a precompiled ZLIB1.DLL can be found in the zlib - web site at: - http://www.zlib.net/ - - Applications that link to ZLIB1.DLL can rely on the following - specification: - - * The exported symbols are exclusively defined in the source - files "zlib.h" and "zlib.def", found in an official zlib - source distribution. - * The symbols are exported by name, not by ordinal. - * The exported names are undecorated. - * The calling convention of functions is "C" (CDECL). - * The ZLIB1.DLL binary is linked to MSVCRT.DLL. - - The archive in which ZLIB1.DLL is bundled contains compiled - test programs that must run with a valid build of ZLIB1.DLL. - It is recommended to download the prebuilt DLL from the zlib - web site, instead of building it yourself, to avoid potential - incompatibilities that could be introduced by your compiler - and build settings. If you do build the DLL yourself, please - make sure that it complies with all the above requirements, - and it runs with the precompiled test programs, bundled with - the original ZLIB1.DLL distribution. - - If, for any reason, you need to build an incompatible DLL, - please use a different file name. - - - 2. Why did you change the name of the DLL to ZLIB1.DLL? - What happened to the old ZLIB.DLL? - - - The old ZLIB.DLL, built from zlib-1.1.4 or earlier, required - compilation settings that were incompatible to those used by - a static build. The DLL settings were supposed to be enabled - by defining the macro ZLIB_DLL, before including "zlib.h". - Incorrect handling of this macro was silently accepted at - build time, resulting in two major problems: - - * ZLIB_DLL was missing from the old makefile. When building - the DLL, not all people added it to the build options. In - consequence, incompatible incarnations of ZLIB.DLL started - to circulate around the net. - - * When switching from using the static library to using the - DLL, applications had to define the ZLIB_DLL macro and - to recompile all the sources that contained calls to zlib - functions. Failure to do so resulted in creating binaries - that were unable to run with the official ZLIB.DLL build. - - The only possible solution that we could foresee was to make - a binary-incompatible change in the DLL interface, in order to - remove the dependency on the ZLIB_DLL macro, and to release - the new DLL under a different name. - - We chose the name ZLIB1.DLL, where '1' indicates the major - zlib version number. We hope that we will not have to break - the binary compatibility again, at least not as long as the - zlib-1.x series will last. - - There is still a ZLIB_DLL macro, that can trigger a more - efficient build and use of the DLL, but compatibility no - longer dependents on it. - - - 3. Can I build ZLIB.DLL from the new zlib sources, and replace - an old ZLIB.DLL, that was built from zlib-1.1.4 or earlier? - - - In principle, you can do it by assigning calling convention - keywords to the macros ZEXPORT and ZEXPORTVA. In practice, - it depends on what you mean by "an old ZLIB.DLL", because the - old DLL exists in several mutually-incompatible versions. - You have to find out first what kind of calling convention is - being used in your particular ZLIB.DLL build, and to use the - same one in the new build. If you don't know what this is all - about, you might be better off if you would just leave the old - DLL intact. - - - 4. Can I compile my application using the new zlib interface, and - link it to an old ZLIB.DLL, that was built from zlib-1.1.4 or - earlier? - - - The official answer is "no"; the real answer depends again on - what kind of ZLIB.DLL you have. Even if you are lucky, this - course of action is unreliable. - - If you rebuild your application and you intend to use a newer - version of zlib (post- 1.1.4), it is strongly recommended to - link it to the new ZLIB1.DLL. - - - 5. Why are the zlib symbols exported by name, and not by ordinal? - - - Although exporting symbols by ordinal is a little faster, it - is risky. Any single glitch in the maintenance or use of the - DEF file that contains the ordinals can result in incompatible - builds and frustrating crashes. Simply put, the benefits of - exporting symbols by ordinal do not justify the risks. - - Technically, it should be possible to maintain ordinals in - the DEF file, and still export the symbols by name. Ordinals - exist in every DLL, and even if the dynamic linking performed - at the DLL startup is searching for names, ordinals serve as - hints, for a faster name lookup. However, if the DEF file - contains ordinals, the Microsoft linker automatically builds - an implib that will cause the executables linked to it to use - those ordinals, and not the names. It is interesting to - notice that the GNU linker for Win32 does not suffer from this - problem. - - It is possible to avoid the DEF file if the exported symbols - are accompanied by a "__declspec(dllexport)" attribute in the - source files. You can do this in zlib by predefining the - ZLIB_DLL macro. - - - 6. I see that the ZLIB1.DLL functions use the "C" (CDECL) calling - convention. Why not use the STDCALL convention? - STDCALL is the standard convention in Win32, and I need it in - my Visual Basic project! - - (For readability, we use CDECL to refer to the convention - triggered by the "__cdecl" keyword, STDCALL to refer to - the convention triggered by "__stdcall", and FASTCALL to - refer to the convention triggered by "__fastcall".) - - - Most of the native Windows API functions (without varargs) use - indeed the WINAPI convention (which translates to STDCALL in - Win32), but the standard C functions use CDECL. If a user - application is intrinsically tied to the Windows API (e.g. - it calls native Windows API functions such as CreateFile()), - sometimes it makes sense to decorate its own functions with - WINAPI. But if ANSI C or POSIX portability is a goal (e.g. - it calls standard C functions such as fopen()), it is not a - sound decision to request the inclusion of , or to - use non-ANSI constructs, for the sole purpose to make the user - functions STDCALL-able. - - The functionality offered by zlib is not in the category of - "Windows functionality", but is more like "C functionality". - - Technically, STDCALL is not bad; in fact, it is slightly - faster than CDECL, and it works with variable-argument - functions, just like CDECL. It is unfortunate that, in spite - of using STDCALL in the Windows API, it is not the default - convention used by the C compilers that run under Windows. - The roots of the problem reside deep inside the unsafety of - the K&R-style function prototypes, where the argument types - are not specified; but that is another story for another day. - - The remaining fact is that CDECL is the default convention. - Even if an explicit convention is hard-coded into the function - prototypes inside C headers, problems may appear. The - necessity to expose the convention in users' callbacks is one - of these problems. - - The calling convention issues are also important when using - zlib in other programming languages. Some of them, like Ada - (GNAT) and Fortran (GNU G77), have C bindings implemented - initially on Unix, and relying on the C calling convention. - On the other hand, the pre- .NET versions of Microsoft Visual - Basic require STDCALL, while Borland Delphi prefers, although - it does not require, FASTCALL. - - In fairness to all possible uses of zlib outside the C - programming language, we choose the default "C" convention. - Anyone interested in different bindings or conventions is - encouraged to maintain specialized projects. The "contrib/" - directory from the zlib distribution already holds a couple - of foreign bindings, such as Ada, C++, and Delphi. - - - 7. I need a DLL for my Visual Basic project. What can I do? - - - Define the ZLIB_WINAPI macro before including "zlib.h", when - building both the DLL and the user application (except that - you don't need to define anything when using the DLL in Visual - Basic). The ZLIB_WINAPI macro will switch on the WINAPI - (STDCALL) convention. The name of this DLL must be different - than the official ZLIB1.DLL. - - Gilles Vollant has contributed a build named ZLIBWAPI.DLL, - with the ZLIB_WINAPI macro turned on, and with the minizip - functionality built in. For more information, please read - the notes inside "contrib/vstudio/readme.txt", found in the - zlib distribution. - - - 8. I need to use zlib in my Microsoft .NET project. What can I - do? - - - Henrik Ravn has contributed a .NET wrapper around zlib. Look - into contrib/dotzlib/, inside the zlib distribution. - - - 9. If my application uses ZLIB1.DLL, should I link it to - MSVCRT.DLL? Why? - - - It is not required, but it is recommended to link your - application to MSVCRT.DLL, if it uses ZLIB1.DLL. - - The executables (.EXE, .DLL, etc.) that are involved in the - same process and are using the C run-time library (i.e. they - are calling standard C functions), must link to the same - library. There are several libraries in the Win32 system: - CRTDLL.DLL, MSVCRT.DLL, the static C libraries, etc. - Since ZLIB1.DLL is linked to MSVCRT.DLL, the executables that - depend on it should also be linked to MSVCRT.DLL. - - -10. Why are you saying that ZLIB1.DLL and my application should - be linked to the same C run-time (CRT) library? I linked my - application and my DLLs to different C libraries (e.g. my - application to a static library, and my DLLs to MSVCRT.DLL), - and everything works fine. - - - If a user library invokes only pure Win32 API (accessible via - and the related headers), its DLL build will work - in any context. But if this library invokes standard C API, - things get more complicated. - - There is a single Win32 library in a Win32 system. Every - function in this library resides in a single DLL module, that - is safe to call from anywhere. On the other hand, there are - multiple versions of the C library, and each of them has its - own separate internal state. Standalone executables and user - DLLs that call standard C functions must link to a C run-time - (CRT) library, be it static or shared (DLL). Intermixing - occurs when an executable (not necessarily standalone) and a - DLL are linked to different CRTs, and both are running in the - same process. - - Intermixing multiple CRTs is possible, as long as their - internal states are kept intact. The Microsoft Knowledge Base - articles KB94248 "HOWTO: Use the C Run-Time" and KB140584 - "HOWTO: Link with the Correct C Run-Time (CRT) Library" - mention the potential problems raised by intermixing. - - If intermixing works for you, it's because your application - and DLLs are avoiding the corruption of each of the CRTs' - internal states, maybe by careful design, or maybe by fortune. - - Also note that linking ZLIB1.DLL to non-Microsoft CRTs, such - as those provided by Borland, raises similar problems. - - -11. Why are you linking ZLIB1.DLL to MSVCRT.DLL? - - - MSVCRT.DLL exists on every Windows 95 with a new service pack - installed, or with Microsoft Internet Explorer 4 or later, and - on all other Windows 4.x or later (Windows 98, Windows NT 4, - or later). It is freely distributable; if not present in the - system, it can be downloaded from Microsoft or from other - software provider for free. - - The fact that MSVCRT.DLL does not exist on a virgin Windows 95 - is not so problematic. Windows 95 is scarcely found nowadays, - Microsoft ended its support a long time ago, and many recent - applications from various vendors, including Microsoft, do not - even run on it. Furthermore, no serious user should run - Windows 95 without a proper update installed. - - -12. Why are you not linking ZLIB1.DLL to - <> ? - - - We considered and abandoned the following alternatives: - - * Linking ZLIB1.DLL to a static C library (LIBC.LIB, or - LIBCMT.LIB) is not a good option. People are using the DLL - mainly to save disk space. If you are linking your program - to a static C library, you may as well consider linking zlib - in statically, too. - - * Linking ZLIB1.DLL to CRTDLL.DLL looks appealing, because - CRTDLL.DLL is present on every Win32 installation. - Unfortunately, it has a series of problems: it does not - work properly with Microsoft's C++ libraries, it does not - provide support for 64-bit file offsets, (and so on...), - and Microsoft discontinued its support a long time ago. - - * Linking ZLIB1.DLL to MSVCR70.DLL or MSVCR71.DLL, supplied - with the Microsoft .NET platform, and Visual C++ 7.0/7.1, - raises problems related to the status of ZLIB1.DLL as a - system component. According to the Microsoft Knowledge Base - article KB326922 "INFO: Redistribution of the Shared C - Runtime Component in Visual C++ .NET", MSVCR70.DLL and - MSVCR71.DLL are not supposed to function as system DLLs, - because they may clash with MSVCRT.DLL. Instead, the - application's installer is supposed to put these DLLs - (if needed) in the application's private directory. - If ZLIB1.DLL depends on a non-system runtime, it cannot - function as a redistributable system component. - - * Linking ZLIB1.DLL to non-Microsoft runtimes, such as - Borland's, or Cygwin's, raises problems related to the - reliable presence of these runtimes on Win32 systems. - It's easier to let the DLL build of zlib up to the people - who distribute these runtimes, and who may proceed as - explained in the answer to Question 14. - - -13. If ZLIB1.DLL cannot be linked to MSVCR70.DLL or MSVCR71.DLL, - how can I build/use ZLIB1.DLL in Microsoft Visual C++ 7.0 - (Visual Studio .NET) or newer? - - - Due to the problems explained in the Microsoft Knowledge Base - article KB326922 (see the previous answer), the C runtime that - comes with the VC7 environment is no longer considered a - system component. That is, it should not be assumed that this - runtime exists, or may be installed in a system directory. - Since ZLIB1.DLL is supposed to be a system component, it may - not depend on a non-system component. - - In order to link ZLIB1.DLL and your application to MSVCRT.DLL - in VC7, you need the library of Visual C++ 6.0 or older. If - you don't have this library at hand, it's probably best not to - use ZLIB1.DLL. - - We are hoping that, in the future, Microsoft will provide a - way to build applications linked to a proper system runtime, - from the Visual C++ environment. Until then, you have a - couple of alternatives, such as linking zlib in statically. - If your application requires dynamic linking, you may proceed - as explained in the answer to Question 14. - - -14. I need to link my own DLL build to a CRT different than - MSVCRT.DLL. What can I do? - - - Feel free to rebuild the DLL from the zlib sources, and link - it the way you want. You should, however, clearly state that - your build is unofficial. You should give it a different file - name, and/or install it in a private directory that can be - accessed by your application only, and is not visible to the - others (i.e. it's neither in the PATH, nor in the SYSTEM or - SYSTEM32 directories). Otherwise, your build may clash with - applications that link to the official build. - - For example, in Cygwin, zlib is linked to the Cygwin runtime - CYGWIN1.DLL, and it is distributed under the name CYGZ.DLL. - - -15. May I include additional pieces of code that I find useful, - link them in ZLIB1.DLL, and export them? - - - No. A legitimate build of ZLIB1.DLL must not include code - that does not originate from the official zlib source code. - But you can make your own private DLL build, under a different - file name, as suggested in the previous answer. - - For example, zlib is a part of the VCL library, distributed - with Borland Delphi and C++ Builder. The DLL build of VCL - is a redistributable file, named VCLxx.DLL. - - -16. May I remove some functionality out of ZLIB1.DLL, by enabling - macros like NO_GZCOMPRESS or NO_GZIP at compile time? - - - No. A legitimate build of ZLIB1.DLL must provide the complete - zlib functionality, as implemented in the official zlib source - code. But you can make your own private DLL build, under a - different file name, as suggested in the previous answer. - - -17. I made my own ZLIB1.DLL build. Can I test it for compliance? - - - We prefer that you download the official DLL from the zlib - web site. If you need something peculiar from this DLL, you - can send your suggestion to the zlib mailing list. - - However, in case you do rebuild the DLL yourself, you can run - it with the test programs found in the DLL distribution. - Running these test programs is not a guarantee of compliance, - but a failure can imply a detected problem. - -** - -This document is written and maintained by -Cosmin Truta diff --git a/libs/zlibng/win32/Makefile.arm b/libs/zlibng/win32/Makefile.arm deleted file mode 100644 index 0b3f94064..000000000 --- a/libs/zlibng/win32/Makefile.arm +++ /dev/null @@ -1,170 +0,0 @@ -# Makefile for zlib using Microsoft (Visual) C -# zlib is copyright (C) 1995-2006 Jean-loup Gailly and Mark Adler -# -# Usage: -# nmake -f win32/Makefile.arm (standard build) -# nmake -f win32/Makefile.arm LOC=-DFOO (nonstandard build) - -# The toplevel directory of the source tree. -# -TOP = . - -# optional build flags -LOC = - -# variables -STATICLIB = zlib.lib -SHAREDLIB = zlib1.dll -IMPLIB = zdll.lib - -CC = cl -LD = link -AR = lib -RC = rc -CP = copy /y -CFLAGS = -nologo -MD -W3 -O2 -Oy- -Zi -Fd"zlib" $(LOC) -WFLAGS = -D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE -DUNALIGNED_OK -D_ARM_WINAPI_PARTITION_DESKTOP_SDK_AVAILABLE=1 -LDFLAGS = -nologo -debug -incremental:no -opt:ref -manifest -ARFLAGS = -nologo -RCFLAGS = /dARM /r -DEFFILE = zlib.def -RCFILE = zlib1.rc -RESFILE = zlib1.res -WITH_GZFILEOP = -WITH_ACLE = -WITH_NEON = -WITH_VFPV3 = -NEON_ARCH = /arch:VFPv4 -SUFFIX = - -OBJS = adler32.obj armfeature.obj compress.obj crc32.obj deflate.obj deflate_fast.obj deflate_slow.obj \ - deflate_medium.obj \ - functable.obj infback.obj inflate.obj inftrees.obj inffast.obj trees.obj uncompr.obj zutil.obj fill_window_arm.obj -!if "$(WITH_GZFILEOP)" != "" -WFLAGS = $(WFLAGS) -DWITH_GZFILEOP -OBJS = $(OBJS) gzclose.obj gzlib.obj gzread.obj gzwrite.obj -DEFFILE = zlibcompat.def -!else -STATICLIB = zlib-ng.lib -SHAREDLIB = zlib-ng1.dll -IMPLIB = zngdll.lib -DEFFILE = zlib-ng.def -RCFILE = zlib-ng1.rc -RESFILE = zlib-ng1.res -SUFFIX = -ng -!endif -!if "$(WITH_ACLE)" != "" -WFLAGS = $(WFLAGS) -DARM_ACLE_CRC_HASH -OBJS = $(OBJS) crc32_acle.obj insert_string_acle.obj -!endif -!if "$(WITH_VFPV3)" != "" -NEON_ARCH = /arch:VFPv3 -!endif -!if "$(WITH_NEON)" != "" -CFLAGS = $(CFLAGS) $(NEON_ARCH) -WFLAGS = $(WFLAGS) -D__ARM_NEON__=1 -DARM_NEON_ADLER32 -DARM_NOCHECK_NEON -OBJS = $(OBJS) adler32_neon.obj -!endif - -# targets -all: $(STATICLIB) $(SHAREDLIB) $(IMPLIB) \ - example.exe minigzip.exe example_d.exe minigzip_d.exe - -zconf: $(TOP)/zconf$(SUFFIX).h.in - $(CP) $(TOP)\zconf$(SUFFIX).h.in $(TOP)\zconf$(SUFFIX).h - -$(STATICLIB): zconf $(OBJS) - $(AR) $(ARFLAGS) -out:$@ $(OBJS) - -$(IMPLIB): $(SHAREDLIB) - -$(SHAREDLIB): zconf $(TOP)/win32/$(DEFFILE) $(OBJS) $(RESFILE) - $(LD) $(LDFLAGS) -def:$(TOP)/win32/$(DEFFILE) -dll -implib:$(IMPLIB) \ - -out:$@ -base:0x5A4C0000 $(OBJS) $(RESFILE) - if exist $@.manifest \ - mt -nologo -manifest $@.manifest -outputresource:$@;2 - -example.exe: example.obj $(STATICLIB) - $(LD) $(LDFLAGS) example.obj $(STATICLIB) - if exist $@.manifest \ - mt -nologo -manifest $@.manifest -outputresource:$@;1 - -minigzip.exe: minigzip.obj $(STATICLIB) - $(LD) $(LDFLAGS) minigzip.obj $(STATICLIB) - if exist $@.manifest \ - mt -nologo -manifest $@.manifest -outputresource:$@;1 - -example_d.exe: example.obj $(IMPLIB) - $(LD) $(LDFLAGS) -out:$@ example.obj $(IMPLIB) - if exist $@.manifest \ - mt -nologo -manifest $@.manifest -outputresource:$@;1 - -minigzip_d.exe: minigzip.obj $(IMPLIB) - $(LD) $(LDFLAGS) -out:$@ minigzip.obj $(IMPLIB) - if exist $@.manifest \ - mt -nologo -manifest $@.manifest -outputresource:$@;1 - -{$(TOP)}.c.obj: - $(CC) -c $(WFLAGS) $(CFLAGS) $< - -{$(TOP)/arch/arm}.c.obj: - $(CC) -c -I$(TOP) $(WFLAGS) $(CFLAGS) $< - -{$(TOP)/test}.c.obj: - $(CC) -c -I$(TOP) $(WFLAGS) $(CFLAGS) $< - -$(TOP)/zconf$(SUFFIX).h: zconf - -SRCDIR = $(TOP) -# Keep the dependences in sync with top-level Makefile.in -adler32.obj: $(SRCDIR)/adler32.c $(SRCDIR)/zbuild.h $(SRCDIR)/zutil.h $(SRCDIR)/functable.h $(SRCDIR)/adler32_p.h -functable.obj: $(SRCDIR)/functable.c $(SRCDIR)/zbuild.h $(SRCDIR)/functable.h $(SRCDIR)/deflate.h $(SRCDIR)/deflate_p.h $(SRCDIR)/gzendian.h $(SRCDIR)/arch/x86/x86.h -gzclose.obj: $(SRCDIR)/gzclose.c $(SRCDIR)/zbuild.h $(SRCDIR)/gzguts.h -gzlib.obj: $(SRCDIR)/gzlib.c $(SRCDIR)/zbuild.h $(SRCDIR)/gzguts.h -gzread.obj: $(SRCDIR)/gzread.c $(SRCDIR)/zbuild.h $(SRCDIR)/gzguts.h -gzwrite.obj: $(SRCDIR)/gzwrite.c $(SRCDIR)/zbuild.h $(SRCDIR)/gzguts.h -compress.obj: $(SRCDIR)/compress.c $(SRCDIR)/zbuild.h $(SRCDIR)/zlib$(SUFFIX).h -uncompr.obj: $(SRCDIR)/uncompr.c $(SRCDIR)/zbuild.h $(SRCDIR)/zlib$(SUFFIX).h -crc32.obj: $(SRCDIR)/crc32.c $(SRCDIR)/zbuild.h $(SRCDIR)/gzendian.h $(SRCDIR)/deflate.h $(SRCDIR)/functable.h $(SRCDIR)/crc32.h -deflate.obj: $(SRCDIR)/deflate.c $(SRCDIR)/zbuild.h $(SRCDIR)/deflate.h $(SRCDIR)/deflate_p.h $(SRCDIR)/functable.h -deflate_fast.obj: $(SRCDIR)/deflate_fast.c $(SRCDIR)/zbuild.h $(SRCDIR)/deflate.h $(SRCDIR)/deflate_p.h $(SRCDIR)/match_p.h $(SRCDIR)/functable.h -deflate_medium.obj: $(SRCDIR)/deflate_medium.c $(SRCDIR)/zbuild.h $(SRCDIR)/deflate.h $(SRCDIR)/deflate_p.h $(SRCDIR)/match_p.h $(SRCDIR)/functable.h -deflate_slow.obj: $(SRCDIR)/deflate_slow.c $(SRCDIR)/zbuild.h $(SRCDIR)/deflate.h $(SRCDIR)/deflate_p.h $(SRCDIR)/match_p.h $(SRCDIR)/functable.h -infback.obj: $(SRCDIR)/infback.c $(SRCDIR)/zbuild.h $(SRCDIR)/zutil.h $(SRCDIR)/inftrees.h $(SRCDIR)/inflate.h $(SRCDIR)/inffast.h -inffast.obj: $(SRCDIR)/inffast.c $(SRCDIR)/zbuild.h $(SRCDIR)/zutil.h $(SRCDIR)/inftrees.h $(SRCDIR)/inflate.h $(SRCDIR)/inffast.h $(SRCDIR)/memcopy.h -inflate.obj: $(SRCDIR)/inflate.c $(SRCDIR)/zbuild.h $(SRCDIR)/zutil.h $(SRCDIR)/inftrees.h $(SRCDIR)/inflate.h $(SRCDIR)/inffast.h $(SRCDIR)/memcopy.h $(SRCDIR)/functable.h -inftrees.obj: $(SRCDIR)/inftrees.c $(SRCDIR)/zbuild.h $(SRCDIR)/zutil.h $(SRCDIR)/inftrees.h -trees.obj: $(SRCDIR)/zbuild.h $(SRCDIR)/deflate.h $(SRCDIR)/trees.h -zutil.obj: $(SRCDIR)/zbuild.h $(SRCDIR)/zutil.h $(SRCDIR)/gzguts.h - -example.obj: $(TOP)/test/example.c $(TOP)/zbuild.h $(TOP)/zlib$(SUFFIX).h - -minigzip.obj: $(TOP)/test/minigzip.c $(TOP)/zbuild.h $(TOP)/zlib$(SUFFIX).h - -$(RESFILE): $(TOP)/win32/$(RCFILE) - $(RC) $(RCFLAGS) /fo$@ $(TOP)/win32/$(RCFILE) - -# testing -test: example.exe minigzip.exe - example - echo hello world | minigzip | minigzip -d - -testdll: example_d.exe minigzip_d.exe - example_d - echo hello world | minigzip_d | minigzip_d -d - - -# cleanup -clean: - -del $(STATICLIB) - -del $(SHAREDLIB) - -del $(IMPLIB) - -del *.obj - -del *.res - -del *.exp - -del *.exe - -del *.pdb - -del *.manifest - -distclean: clean - -del zconf$(SUFFIX).h diff --git a/libs/zlibng/win32/Makefile.msc b/libs/zlibng/win32/Makefile.msc deleted file mode 100644 index 9f4b884c3..000000000 --- a/libs/zlibng/win32/Makefile.msc +++ /dev/null @@ -1,162 +0,0 @@ -# Makefile for zlib using Microsoft (Visual) C -# zlib is copyright (C) 1995-2006 Jean-loup Gailly and Mark Adler -# -# Usage: -# nmake -f win32/Makefile.msc (standard build) -# nmake -f win32/Makefile.msc LOC=-DFOO (nonstandard build) - -# The toplevel directory of the source tree. -# -TOP = . - -# optional build flags -LOC = - -# variables -STATICLIB = zlib.lib -SHAREDLIB = zlib1.dll -IMPLIB = zdll.lib - -CC = cl -LD = link -AR = lib -RC = rc -CP = copy /y -CFLAGS = -nologo -MD -W3 -O2 -Oy- -Zi -Fd"zlib" $(LOC) -WFLAGS = -D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE -DX86_PCLMULQDQ_CRC -DX86_SSE2 -DX86_CPUID -DX86_SSE4_2_CRC_HASH -DUNALIGNED_OK -DX86_QUICK_STRATEGY -LDFLAGS = -nologo -debug -incremental:no -opt:ref -manifest -ARFLAGS = -nologo -RCFLAGS = /dWIN32 /r -DEFFILE = zlib.def -RCFILE = zlib1.rc -RESFILE = zlib1.res -WITH_GZFILEOP = -ZLIB_COMPAT = -SUFFIX = - -OBJS = adler32.obj compress.obj crc32.obj deflate.obj deflate_fast.obj deflate_quick.obj deflate_slow.obj \ - deflate_medium.obj \ - functable.obj infback.obj inflate.obj inftrees.obj inffast.obj trees.obj uncompr.obj zutil.obj \ - x86.obj fill_window_sse.obj insert_string_sse.obj crc_folding.obj -!if "$(ZLIB_COMPAT)" != "" -WITH_GZFILEOP = yes -WFLAGS = $(WFLAGS) -DZLIB_COMPAT -DEFFILE = zlibcompat.def -!else -STATICLIB = zlib-ng.lib -SHAREDLIB = zlib-ng1.dll -IMPLIB = zngdll.lib -DEFFILE = zlib-ng.def -RCFILE = zlib-ng1.rc -RESFILE = zlib-ng1.res -SUFFIX = -ng -!endif - -!if "$(WITH_GZFILEOP)" != "" -WFLAGS = $(WFLAGS) -DWITH_GZFILEOP -OBJS = $(OBJS) gzclose.obj gzlib.obj gzread.obj gzwrite.obj -!endif - -# targets -all: $(STATICLIB) $(SHAREDLIB) $(IMPLIB) \ - example.exe minigzip.exe example_d.exe minigzip_d.exe - -zconf: $(TOP)/zconf$(SUFFIX).h.in - $(CP) $(TOP)\zconf$(SUFFIX).h.in $(TOP)\zconf$(SUFFIX).h - -$(STATICLIB): zconf $(OBJS) - $(AR) $(ARFLAGS) -out:$@ $(OBJS) - -$(IMPLIB): $(SHAREDLIB) - -$(SHAREDLIB): zconf $(TOP)/win32/$(DEFFILE) $(OBJS) $(RESFILE) - $(LD) $(LDFLAGS) -def:$(TOP)/win32/$(DEFFILE) -dll -implib:$(IMPLIB) \ - -out:$@ -base:0x5A4C0000 $(OBJS) $(RESFILE) - if exist $@.manifest \ - mt -nologo -manifest $@.manifest -outputresource:$@;2 - -example.exe: example.obj $(STATICLIB) - $(LD) $(LDFLAGS) example.obj $(STATICLIB) - if exist $@.manifest \ - mt -nologo -manifest $@.manifest -outputresource:$@;1 - -minigzip.exe: minigzip.obj $(STATICLIB) - $(LD) $(LDFLAGS) minigzip.obj $(STATICLIB) - if exist $@.manifest \ - mt -nologo -manifest $@.manifest -outputresource:$@;1 - -example_d.exe: example.obj $(IMPLIB) - $(LD) $(LDFLAGS) -out:$@ example.obj $(IMPLIB) - if exist $@.manifest \ - mt -nologo -manifest $@.manifest -outputresource:$@;1 - -minigzip_d.exe: minigzip.obj $(IMPLIB) - $(LD) $(LDFLAGS) -out:$@ minigzip.obj $(IMPLIB) - if exist $@.manifest \ - mt -nologo -manifest $@.manifest -outputresource:$@;1 - -{$(TOP)}.c.obj: - $(CC) -c $(WFLAGS) $(CFLAGS) $< - -{$(TOP)/arch/x86}.c.obj: - $(CC) -c -I$(TOP) $(WFLAGS) $(CFLAGS) $< - -{$(TOP)/test}.c.obj: - $(CC) -c -I$(TOP) $(WFLAGS) $(CFLAGS) $< - -$(TOP)/zconf$(SUFFIX).h: zconf - -SRCDIR = $(TOP) -# Keep the dependences in sync with top-level Makefile.in -adler32.obj: $(SRCDIR)/adler32.c $(SRCDIR)/zbuild.h $(SRCDIR)/zutil.h $(SRCDIR)/functable.h $(SRCDIR)/adler32_p.h -functable.obj: $(SRCDIR)/functable.c $(SRCDIR)/zbuild.h $(SRCDIR)/functable.h $(SRCDIR)/deflate.h $(SRCDIR)/deflate_p.h $(SRCDIR)/gzendian.h $(SRCDIR)/arch/x86/x86.h -gzclose.obj: $(SRCDIR)/gzclose.c $(SRCDIR)/zbuild.h $(SRCDIR)/gzguts.h -gzlib.obj: $(SRCDIR)/gzlib.c $(SRCDIR)/zbuild.h $(SRCDIR)/gzguts.h -gzread.obj: $(SRCDIR)/gzread.c $(SRCDIR)/zbuild.h $(SRCDIR)/gzguts.h -gzwrite.obj: $(SRCDIR)/gzwrite.c $(SRCDIR)/zbuild.h $(SRCDIR)/gzguts.h -compress.obj: $(SRCDIR)/compress.c $(SRCDIR)/zbuild.h $(SRCDIR)/zlib$(SUFFIX).h -uncompr.obj: $(SRCDIR)/uncompr.c $(SRCDIR)/zbuild.h $(SRCDIR)/zlib$(SUFFIX).h -crc32.obj: $(SRCDIR)/crc32.c $(SRCDIR)/zbuild.h $(SRCDIR)/gzendian.h $(SRCDIR)/deflate.h $(SRCDIR)/functable.h $(SRCDIR)/crc32.h -deflate.obj: $(SRCDIR)/deflate.c $(SRCDIR)/zbuild.h $(SRCDIR)/deflate.h $(SRCDIR)/deflate_p.h $(SRCDIR)/functable.h -deflate_fast.obj: $(SRCDIR)/deflate_fast.c $(SRCDIR)/zbuild.h $(SRCDIR)/deflate.h $(SRCDIR)/deflate_p.h $(SRCDIR)/match_p.h $(SRCDIR)/functable.h -deflate_medium.obj: $(SRCDIR)/deflate_medium.c $(SRCDIR)/zbuild.h $(SRCDIR)/deflate.h $(SRCDIR)/deflate_p.h $(SRCDIR)/match_p.h $(SRCDIR)/functable.h -deflate_quick.obj: $(SRCDIR)/arch/x86/deflate_quick.c $(SRCDIR)/zbuild.h $(SRCDIR)/deflate.h $(SRCDIR)/memcopy.h -deflate_slow.obj: $(SRCDIR)/deflate_slow.c $(SRCDIR)/zbuild.h $(SRCDIR)/deflate.h $(SRCDIR)/deflate_p.h $(SRCDIR)/match_p.h $(SRCDIR)/functable.h -infback.obj: $(SRCDIR)/infback.c $(SRCDIR)/zbuild.h $(SRCDIR)/zutil.h $(SRCDIR)/inftrees.h $(SRCDIR)/inflate.h $(SRCDIR)/inffast.h -inffast.obj: $(SRCDIR)/inffast.c $(SRCDIR)/zbuild.h $(SRCDIR)/zutil.h $(SRCDIR)/inftrees.h $(SRCDIR)/inflate.h $(SRCDIR)/inffast.h $(SRCDIR)/memcopy.h -inflate.obj: $(SRCDIR)/inflate.c $(SRCDIR)/zbuild.h $(SRCDIR)/zutil.h $(SRCDIR)/inftrees.h $(SRCDIR)/inflate.h $(SRCDIR)/inffast.h $(SRCDIR)/memcopy.h $(SRCDIR)/functable.h -inftrees.obj: $(SRCDIR)/inftrees.c $(SRCDIR)/zbuild.h $(SRCDIR)/zutil.h $(SRCDIR)/inftrees.h -trees.obj: $(SRCDIR)/zbuild.h $(SRCDIR)/deflate.h $(SRCDIR)/trees.h -zutil.obj: $(SRCDIR)/zbuild.h $(SRCDIR)/zutil.h $(SRCDIR)/gzguts.h - -example.obj: $(TOP)/test/example.c $(TOP)/zbuild.h $(TOP)/zlib$(SUFFIX).h - -minigzip.obj: $(TOP)/test/minigzip.c $(TOP)/zbuild.h $(TOP)/zlib$(SUFFIX).h - -$(RESFILE): $(TOP)/win32/$(RCFILE) - $(RC) $(RCFLAGS) /fo$@ $(TOP)/win32/$(RCFILE) - -# testing -test: example.exe minigzip.exe - example - echo hello world | minigzip | minigzip -d - -testdll: example_d.exe minigzip_d.exe - example_d - echo hello world | minigzip_d | minigzip_d -d - - -# cleanup -clean: - -del $(STATICLIB) - -del $(SHAREDLIB) - -del $(IMPLIB) - -del *.obj - -del *.res - -del *.exp - -del *.exe - -del *.pdb - -del *.manifest - -distclean: clean - -del zconf$(SUFFIX).h diff --git a/libs/zlibng/win32/README-WIN32.txt b/libs/zlibng/win32/README-WIN32.txt deleted file mode 100644 index 7a859bb23..000000000 --- a/libs/zlibng/win32/README-WIN32.txt +++ /dev/null @@ -1,103 +0,0 @@ -ZLIB DATA COMPRESSION LIBRARY - -zlib 1.2.11 is a general purpose data compression library. All the code is -thread safe. The data format used by the zlib library is described by RFCs -(Request for Comments) 1950 to 1952 in the files -http://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format) -and rfc1952.txt (gzip format). - -All functions of the compression library are documented in the file zlib.h -(volunteer to write man pages welcome, contact zlib@gzip.org). Two compiled -examples are distributed in this package, example and minigzip. The example_d -and minigzip_d flavors validate that the zlib1.dll file is working correctly. - -Questions about zlib should be sent to . The zlib home page -is http://zlib.net/ . Before reporting a problem, please check this site to -verify that you have the latest version of zlib; otherwise get the latest -version and check whether the problem still exists or not. - -PLEASE read DLL_FAQ.txt, and the the zlib FAQ http://zlib.net/zlib_faq.html -before asking for help. - - -Manifest: - -The package zlib-1.2.11-win32-x86.zip will contain the following files: - - README-WIN32.txt This document - ChangeLog Changes since previous zlib packages - DLL_FAQ.txt Frequently asked questions about zlib1.dll - zlib.3.pdf Documentation of this library in Adobe Acrobat format - - example.exe A statically-bound example (using zlib.lib, not the dll) - example.pdb Symbolic information for debugging example.exe - - example_d.exe A zlib1.dll bound example (using zdll.lib) - example_d.pdb Symbolic information for debugging example_d.exe - - minigzip.exe A statically-bound test program (using zlib.lib, not the dll) - minigzip.pdb Symbolic information for debugging minigzip.exe - - minigzip_d.exe A zlib1.dll bound test program (using zdll.lib) - minigzip_d.pdb Symbolic information for debugging minigzip_d.exe - - zlib.h Install these files into the compilers' INCLUDE path to - zconf.h compile programs which use zlib.lib or zdll.lib - - zdll.lib Install these files into the compilers' LIB path if linking - zdll.exp a compiled program to the zlib1.dll binary - - zlib.lib Install these files into the compilers' LIB path to link zlib - zlib.pdb into compiled programs, without zlib1.dll runtime dependency - (zlib.pdb provides debugging info to the compile time linker) - - zlib1.dll Install this binary shared library into the system PATH, or - the program's runtime directory (where the .exe resides) - zlib1.pdb Install in the same directory as zlib1.dll, in order to debug - an application crash using WinDbg or similar tools. - -All .pdb files above are entirely optional, but are very useful to a developer -attempting to diagnose program misbehavior or a crash. Many additional -important files for developers can be found in the zlib127.zip source package -available from http://zlib.net/ - review that package's README file for details. - - -Acknowledgments: - -The deflate format used by zlib was defined by Phil Katz. The deflate and -zlib specifications were written by L. Peter Deutsch. Thanks to all the -people who reported problems and suggested various improvements in zlib; they -are too numerous to cite here. - - -Copyright notice: - - (C) 1995-2012 Jean-loup Gailly and Mark Adler - - This software is provided 'as-is', without any express or implied - warranty. In no event will the authors be held liable for any damages - arising from the use of this software. - - Permission is granted to anyone to use this software for any purpose, - including commercial applications, and to alter it and redistribute it - freely, subject to the following restrictions: - - 1. The origin of this software must not be misrepresented; you must not - claim that you wrote the original software. If you use this software - in a product, an acknowledgment in the product documentation would be - appreciated but is not required. - 2. Altered source versions must be plainly marked as such, and must not be - misrepresented as being the original software. - 3. This notice may not be removed or altered from any source distribution. - - Jean-loup Gailly Mark Adler - jloup@gzip.org madler@alumni.caltech.edu - -If you use the zlib library in a product, we would appreciate *not* receiving -lengthy legal documents to sign. The sources are provided for free but without -warranty of any kind. The library has been entirely written by Jean-loup -Gailly and Mark Adler; it does not include third-party code. - -If you redistribute modified sources, we would appreciate that you include in -the file ChangeLog history information documenting your changes. Please read -the FAQ for more information on the distribution of modified source versions. diff --git a/libs/zlibng/win32/VisualC.txt b/libs/zlibng/win32/VisualC.txt deleted file mode 100644 index 579a5fc9e..000000000 --- a/libs/zlibng/win32/VisualC.txt +++ /dev/null @@ -1,3 +0,0 @@ - -To build zlib using the Microsoft Visual C++ environment, -use the appropriate project from the projects/ directory. diff --git a/libs/zlibng/win32/zlib-ng.def b/libs/zlibng/win32/zlib-ng.def deleted file mode 100644 index fd1047f44..000000000 --- a/libs/zlibng/win32/zlib-ng.def +++ /dev/null @@ -1,61 +0,0 @@ -; zlib-ng data compression library -EXPORTS -; basic functions - zlibng_version - zng_deflate - zng_deflateEnd - zng_inflate - zng_inflateEnd -; advanced functions - zng_deflateSetDictionary - zng_deflateGetDictionary - zng_deflateCopy - zng_deflateReset - zng_deflateParams - zng_deflateTune - zng_deflateBound - zng_deflatePending - zng_deflatePrime - zng_deflateSetHeader - zng_inflateSetDictionary - zng_inflateGetDictionary - zng_inflateSync - zng_inflateCopy - zng_inflateReset - zng_inflateReset2 - zng_inflatePrime - zng_inflateMark - zng_inflateGetHeader - zng_inflateBack - zng_inflateBackEnd - zng_zlibCompileFlags -; utility functions - zng_compress - zng_compress2 - zng_compressBound - zng_uncompress - zng_uncompress2 -; large file functions - zng_adler32_combine64 - zng_crc32_combine64 -; checksum functions - zng_adler32 - zng_adler32_z - zng_crc32 - zng_crc32_z - zng_adler32_combine - zng_crc32_combine -; various hacks, don't look :) - zng_deflateInit_ - zng_deflateInit2_ - zng_inflateInit_ - zng_inflateInit2_ - zng_inflateBackInit_ - zng_zError - zng_inflateSyncPoint - zng_get_crc_table - zng_inflateUndermine - zng_inflateValidate - zng_inflateCodesUsed - zng_inflateResetKeep - zng_deflateResetKeep diff --git a/libs/zlibng/win32/zlib-ng1.rc b/libs/zlibng/win32/zlib-ng1.rc deleted file mode 100644 index fdac56ff6..000000000 --- a/libs/zlibng/win32/zlib-ng1.rc +++ /dev/null @@ -1,40 +0,0 @@ -#include -#include "../zlib-ng.h" - -#ifdef GCC_WINDRES -VS_VERSION_INFO VERSIONINFO -#else -VS_VERSION_INFO VERSIONINFO MOVEABLE IMPURE LOADONCALL DISCARDABLE -#endif - FILEVERSION ZLIBNG_VER_MAJOR,ZLIBNG_VER_MINOR,ZLIBNG_VER_REVISION,0 - PRODUCTVERSION ZLIBNG_VER_MAJOR,ZLIBNG_VER_MINOR,ZLIBNG_VER_REVISION,0 - FILEFLAGSMASK VS_FFI_FILEFLAGSMASK -#ifdef _DEBUG - FILEFLAGS 1 -#else - FILEFLAGS 0 -#endif - FILEOS VOS__WINDOWS32 - FILETYPE VFT_DLL - FILESUBTYPE 0 // not used -BEGIN - BLOCK "StringFileInfo" - BEGIN - BLOCK "040904E4" - //language ID = U.S. English, char set = Windows, Multilingual - BEGIN - VALUE "FileDescription", "zlib data compression library\0" - VALUE "FileVersion", ZLIBNG_VERSION "\0" - VALUE "InternalName", "zlib-ng1.dll\0" - VALUE "LegalCopyright", "(C) 1995-2013 Jean-loup Gailly & Mark Adler\0" - VALUE "OriginalFilename", "zlib-ng1.dll\0" - VALUE "ProductName", "zlib\0" - VALUE "ProductVersion", ZLIBNG_VERSION "\0" - VALUE "Comments", "For more information visit http://www.zlib.net/\0" - END - END - BLOCK "VarFileInfo" - BEGIN - VALUE "Translation", 0x0409, 1252 - END -END diff --git a/libs/zlibng/win32/zlib.def b/libs/zlibng/win32/zlib.def deleted file mode 100644 index 67644205a..000000000 --- a/libs/zlibng/win32/zlib.def +++ /dev/null @@ -1,61 +0,0 @@ -; zlib data compression library -EXPORTS -; basic functions - zlibVersion - deflate - deflateEnd - inflate - inflateEnd -; advanced functions - deflateSetDictionary - deflateGetDictionary - deflateCopy - deflateReset - deflateParams - deflateTune - deflateBound - deflatePending - deflatePrime - deflateSetHeader - inflateSetDictionary - inflateGetDictionary - inflateSync - inflateCopy - inflateReset - inflateReset2 - inflatePrime - inflateMark - inflateGetHeader - inflateBack - inflateBackEnd - zlibCompileFlags -; utility functions - compress - compress2 - compressBound - uncompress - uncompress2 -; large file functions - adler32_combine64 - crc32_combine64 -; checksum functions - adler32 - adler32_z - crc32 - crc32_z - adler32_combine - crc32_combine -; various hacks, don't look :) - deflateInit_ - deflateInit2_ - inflateInit_ - inflateInit2_ - inflateBackInit_ - zError - inflateSyncPoint - get_crc_table - inflateUndermine - inflateValidate - inflateCodesUsed - inflateResetKeep - deflateResetKeep diff --git a/libs/zlibng/win32/zlib1.rc b/libs/zlibng/win32/zlib1.rc deleted file mode 100644 index 5c0feed1b..000000000 --- a/libs/zlibng/win32/zlib1.rc +++ /dev/null @@ -1,40 +0,0 @@ -#include -#include "../zlib.h" - -#ifdef GCC_WINDRES -VS_VERSION_INFO VERSIONINFO -#else -VS_VERSION_INFO VERSIONINFO MOVEABLE IMPURE LOADONCALL DISCARDABLE -#endif - FILEVERSION ZLIB_VER_MAJOR,ZLIB_VER_MINOR,ZLIB_VER_REVISION,0 - PRODUCTVERSION ZLIB_VER_MAJOR,ZLIB_VER_MINOR,ZLIB_VER_REVISION,0 - FILEFLAGSMASK VS_FFI_FILEFLAGSMASK -#ifdef _DEBUG - FILEFLAGS 1 -#else - FILEFLAGS 0 -#endif - FILEOS VOS__WINDOWS32 - FILETYPE VFT_DLL - FILESUBTYPE 0 // not used -BEGIN - BLOCK "StringFileInfo" - BEGIN - BLOCK "040904E4" - //language ID = U.S. English, char set = Windows, Multilingual - BEGIN - VALUE "FileDescription", "zlib data compression library\0" - VALUE "FileVersion", ZLIB_VERSION "\0" - VALUE "InternalName", "zlib1.dll\0" - VALUE "LegalCopyright", "(C) 1995-2013 Jean-loup Gailly & Mark Adler\0" - VALUE "OriginalFilename", "zlib1.dll\0" - VALUE "ProductName", "zlib\0" - VALUE "ProductVersion", ZLIB_VERSION "\0" - VALUE "Comments", "For more information visit http://www.zlib.net/\0" - END - END - BLOCK "VarFileInfo" - BEGIN - VALUE "Translation", 0x0409, 1252 - END -END diff --git a/libs/zlibng/win32/zlibcompat.def b/libs/zlibng/win32/zlibcompat.def deleted file mode 100644 index a2188b000..000000000 --- a/libs/zlibng/win32/zlibcompat.def +++ /dev/null @@ -1,94 +0,0 @@ -; zlib data compression library -EXPORTS -; basic functions - zlibVersion - deflate - deflateEnd - inflate - inflateEnd -; advanced functions - deflateSetDictionary - deflateGetDictionary - deflateCopy - deflateReset - deflateParams - deflateTune - deflateBound - deflatePending - deflatePrime - deflateSetHeader - inflateSetDictionary - inflateGetDictionary - inflateSync - inflateCopy - inflateReset - inflateReset2 - inflatePrime - inflateMark - inflateGetHeader - inflateBack - inflateBackEnd - zlibCompileFlags -; utility functions - compress - compress2 - compressBound - uncompress - uncompress2 - gzopen - gzdopen - gzbuffer - gzsetparams - gzread - gzfread - gzwrite - gzfwrite - gzprintf - gzvprintf - gzputs - gzgets - gzputc - gzgetc - gzungetc - gzflush - gzseek - gzrewind - gztell - gzoffset - gzeof - gzdirect - gzclose - gzclose_r - gzclose_w - gzerror - gzclearerr -; large file functions - gzopen64 - gzseek64 - gztell64 - gzoffset64 - adler32_combine64 - crc32_combine64 -; checksum functions - adler32 - adler32_z - crc32 - crc32_z - adler32_combine - crc32_combine -; various hacks, don't look :) - deflateInit_ - deflateInit2_ - inflateInit_ - inflateInit2_ - inflateBackInit_ - gzgetc_ - zError - inflateSyncPoint - get_crc_table - inflateUndermine - inflateValidate - inflateCodesUsed - inflateResetKeep - deflateResetKeep - gzopen_w diff --git a/libs/zlibng/zbuild.h b/libs/zlibng/zbuild.h deleted file mode 100644 index f375f2e68..000000000 --- a/libs/zlibng/zbuild.h +++ /dev/null @@ -1,25 +0,0 @@ -#ifndef _ZBUILD_H -#define _ZBUILD_H - -/* This has to be first include that defines any types */ -#if defined(_MSC_VER) -# include - typedef SSIZE_T ssize_t; -# define __thread __declspec(thread) -#endif - -#if defined(ZLIB_COMPAT) -# define PREFIX(x) x -# define PREFIX2(x) ZLIB_ ## x -# define PREFIX3(x) z_ ## x -# define zVersion zlibVersion -# define z_size_t unsigned long -#else -# define PREFIX(x) zng_ ## x -# define PREFIX2(x) ZLIBNG_ ## x -# define PREFIX3(x) zng_ ## x -# define zVersion zlibng_version -# define z_size_t size_t -#endif - -#endif diff --git a/libs/zlibng/zconf-ng.h.in b/libs/zlibng/zconf-ng.h.in deleted file mode 100644 index 5d0928de5..000000000 --- a/libs/zlibng/zconf-ng.h.in +++ /dev/null @@ -1,174 +0,0 @@ -/* zconf-ng.h -- configuration of the zlib-ng compression library - * Copyright (C) 1995-2016 Jean-loup Gailly, Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* @(#) $Id$ */ - -#ifndef ZCONFNG_H -#define ZCONFNG_H - -#if defined(_WINDOWS) && !defined(WINDOWS) -# define WINDOWS -#endif -#if defined(_WIN32) || defined(__WIN32__) -# ifndef WIN32 -# define WIN32 -# endif -#endif - -#ifdef __STDC_VERSION__ -# if __STDC_VERSION__ >= 199901L -# ifndef STDC99 -# define STDC99 -# endif -# endif -#endif - -/* Maximum value for memLevel in deflateInit2 */ -#ifndef MAX_MEM_LEVEL -# define MAX_MEM_LEVEL 9 -#endif - -/* Maximum value for windowBits in deflateInit2 and inflateInit2. - * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files - * created by gzip. (Files created by minigzip can still be extracted by - * gzip.) - */ -#ifndef MAX_WBITS -# define MAX_WBITS 15 /* 32K LZ77 window */ -#endif - -/* The memory requirements for deflate are (in bytes): - (1 << (windowBits+2)) + (1 << (memLevel+9)) - that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values) - plus a few kilobytes for small objects. For example, if you want to reduce - the default memory requirements from 256K to 128K, compile with - make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7" - Of course this will generally degrade compression (there's no free lunch). - - The memory requirements for inflate are (in bytes) 1 << windowBits - that is, 32K for windowBits=15 (default value) plus about 7 kilobytes - for small objects. -*/ - - /* Type declarations */ - - -#if defined(WINDOWS) || defined(WIN32) - /* If building or using zlib as a DLL, define ZLIB_DLL. - * This is not mandatory, but it offers a little performance increase. - */ -# ifdef ZLIB_DLL -# if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500)) -# ifdef ZLIB_INTERNAL -# define ZEXTERN extern __declspec(dllexport) -# else -# define ZEXTERN extern __declspec(dllimport) -# endif -# endif -# endif /* ZLIB_DLL */ - /* If building or using zlib with the WINAPI/WINAPIV calling convention, - * define ZLIB_WINAPI. - * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI. - */ -# ifdef ZLIB_WINAPI -# include - /* No need for _export, use ZLIB.DEF instead. */ - /* For complete Windows compatibility, use WINAPI, not __stdcall. */ -# define ZEXPORT WINAPI -# define ZEXPORTVA WINAPIV -# endif -#endif - -#ifndef ZEXTERN -# define ZEXTERN extern -#endif -#ifndef ZEXPORT -# define ZEXPORT -#endif -#ifndef ZEXPORTVA -# define ZEXPORTVA -#endif - -/* Fallback for something that includes us. */ -typedef unsigned char Byte; -typedef Byte Bytef; - -typedef unsigned int uInt; /* 16 bits or more */ -typedef unsigned long uLong; /* 32 bits or more */ - -typedef char charf; -typedef int intf; -typedef uInt uIntf; -typedef uLong uLongf; - -typedef void const *voidpc; -typedef void *voidpf; -typedef void *voidp; - -#ifdef HAVE_UNISTD_H /* may be set to #if 1 by ./configure */ -# define Z_HAVE_UNISTD_H -#endif - -#ifdef NEED_PTRDIFF_T /* may be set to #if 1 by ./configure */ -typedef PTRDIFF_TYPE ptrdiff_t; -#endif - -#include /* for off_t */ -#include /* for va_list */ - -#include /* for wchar_t and NULL */ - -/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and - * "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even - * though the former does not conform to the LFS document), but considering - * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as - * equivalently requesting no 64-bit operations - */ -#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1 -# undef _LARGEFILE64_SOURCE -#endif - -#if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE) -# include /* for SEEK_*, off_t, and _LFS64_LARGEFILE */ -# ifndef z_off_t -# define z_off_t off_t -# endif -#endif - -#if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0 -# define Z_LFS64 -#endif - -#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64) -# define Z_LARGE64 -#endif - -#if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64) -# define Z_WANT64 -#endif - -#if !defined(SEEK_SET) && defined(WITH_GZFILEOP) -# define SEEK_SET 0 /* Seek from beginning of file. */ -# define SEEK_CUR 1 /* Seek from current position. */ -# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */ -#endif - -#ifndef z_off_t -# define z_off_t long -#endif - -#if !defined(WIN32) && defined(Z_LARGE64) -# define z_off64_t off64_t -#else -# if defined(__MSYS__) -# define z_off64_t _off64_t -# elif defined(WIN32) && !defined(__GNUC__) -# define z_off64_t __int64 -# else -# define z_off64_t z_off_t -# endif -#endif - -#endif /* ZCONFNG_H */ diff --git a/libs/zlibng/zconf.h.in b/libs/zlibng/zconf.h.in deleted file mode 100644 index 79e4cc49c..000000000 --- a/libs/zlibng/zconf.h.in +++ /dev/null @@ -1,174 +0,0 @@ -/* zconf.h -- configuration of the zlib compression library - * Copyright (C) 1995-2016 Jean-loup Gailly, Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* @(#) $Id$ */ - -#ifndef ZCONF_H -#define ZCONF_H - -#if defined(_WINDOWS) && !defined(WINDOWS) -# define WINDOWS -#endif -#if defined(_WIN32) || defined(__WIN32__) -# ifndef WIN32 -# define WIN32 -# endif -#endif - -#ifdef __STDC_VERSION__ -# if __STDC_VERSION__ >= 199901L -# ifndef STDC99 -# define STDC99 -# endif -# endif -#endif - -/* Maximum value for memLevel in deflateInit2 */ -#ifndef MAX_MEM_LEVEL -# define MAX_MEM_LEVEL 9 -#endif - -/* Maximum value for windowBits in deflateInit2 and inflateInit2. - * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files - * created by gzip. (Files created by minigzip can still be extracted by - * gzip.) - */ -#ifndef MAX_WBITS -# define MAX_WBITS 15 /* 32K LZ77 window */ -#endif - -/* The memory requirements for deflate are (in bytes): - (1 << (windowBits+2)) + (1 << (memLevel+9)) - that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values) - plus a few kilobytes for small objects. For example, if you want to reduce - the default memory requirements from 256K to 128K, compile with - make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7" - Of course this will generally degrade compression (there's no free lunch). - - The memory requirements for inflate are (in bytes) 1 << windowBits - that is, 32K for windowBits=15 (default value) plus about 7 kilobytes - for small objects. -*/ - - /* Type declarations */ - - -#if defined(WINDOWS) || defined(WIN32) - /* If building or using zlib as a DLL, define ZLIB_DLL. - * This is not mandatory, but it offers a little performance increase. - */ -# ifdef ZLIB_DLL -# if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500)) -# ifdef ZLIB_INTERNAL -# define ZEXTERN extern __declspec(dllexport) -# else -# define ZEXTERN extern __declspec(dllimport) -# endif -# endif -# endif /* ZLIB_DLL */ - /* If building or using zlib with the WINAPI/WINAPIV calling convention, - * define ZLIB_WINAPI. - * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI. - */ -# ifdef ZLIB_WINAPI -# include - /* No need for _export, use ZLIB.DEF instead. */ - /* For complete Windows compatibility, use WINAPI, not __stdcall. */ -# define ZEXPORT WINAPI -# define ZEXPORTVA WINAPIV -# endif -#endif - -#ifndef ZEXTERN -# define ZEXTERN extern -#endif -#ifndef ZEXPORT -# define ZEXPORT -#endif -#ifndef ZEXPORTVA -# define ZEXPORTVA -#endif - -/* Fallback for something that includes us. */ -typedef unsigned char Byte; -typedef Byte Bytef; - -typedef unsigned int uInt; /* 16 bits or more */ -typedef unsigned long uLong; /* 32 bits or more */ - -typedef char charf; -typedef int intf; -typedef uInt uIntf; -typedef uLong uLongf; - -typedef void const *voidpc; -typedef void *voidpf; -typedef void *voidp; - -#ifdef HAVE_UNISTD_H /* may be set to #if 1 by ./configure */ -# define Z_HAVE_UNISTD_H -#endif - -#ifdef NEED_PTRDIFF_T /* may be set to #if 1 by ./configure */ -typedef PTRDIFF_TYPE ptrdiff_t; -#endif - -#include /* for off_t */ -#include /* for va_list */ - -#include /* for wchar_t and NULL */ - -/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and - * "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even - * though the former does not conform to the LFS document), but considering - * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as - * equivalently requesting no 64-bit operations - */ -#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1 -# undef _LARGEFILE64_SOURCE -#endif - -#if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE) -# include /* for SEEK_*, off_t, and _LFS64_LARGEFILE */ -# ifndef z_off_t -# define z_off_t off_t -# endif -#endif - -#if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0 -# define Z_LFS64 -#endif - -#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64) -# define Z_LARGE64 -#endif - -#if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64) -# define Z_WANT64 -#endif - -#if !defined(SEEK_SET) -# define SEEK_SET 0 /* Seek from beginning of file. */ -# define SEEK_CUR 1 /* Seek from current position. */ -# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */ -#endif - -#ifndef z_off_t -# define z_off_t long -#endif - -#if !defined(WIN32) && defined(Z_LARGE64) -# define z_off64_t off64_t -#else -# if defined(__MSYS__) -# define z_off64_t _off64_t -# elif defined(WIN32) && !defined(__GNUC__) -# define z_off64_t __int64 -# else -# define z_off64_t z_off_t -# endif -#endif - -#endif /* ZCONF_H */ diff --git a/libs/zlibng/zlib-ng.h b/libs/zlibng/zlib-ng.h deleted file mode 100644 index 3d972a0c5..000000000 --- a/libs/zlibng/zlib-ng.h +++ /dev/null @@ -1,1842 +0,0 @@ -#ifndef ZNGLIB_H_ -#define ZNGLIB_H_ -/* zlib-ng.h -- interface of the 'zlib-ng' compression library - Forked from and compatible with zlib 1.2.11 - - Copyright (C) 1995-2016 Jean-loup Gailly and Mark Adler - - This software is provided 'as-is', without any express or implied - warranty. In no event will the authors be held liable for any damages - arising from the use of this software. - - Permission is granted to anyone to use this software for any purpose, - including commercial applications, and to alter it and redistribute it - freely, subject to the following restrictions: - - 1. The origin of this software must not be misrepresented; you must not - claim that you wrote the original software. If you use this software - in a product, an acknowledgment in the product documentation would be - appreciated but is not required. - 2. Altered source versions must be plainly marked as such, and must not be - misrepresented as being the original software. - 3. This notice may not be removed or altered from any source distribution. - - Jean-loup Gailly Mark Adler - jloup@gzip.org madler@alumni.caltech.edu - - - The data format used by the zlib library is described by RFCs (Request for - Comments) 1950 to 1952 in the files http://tools.ietf.org/html/rfc1950 - (zlib format), rfc1951 (deflate format) and rfc1952 (gzip format). -*/ - -#include -#include "zconf-ng.h" - -#ifdef __cplusplus -extern "C" { -#endif - -#define ZLIBNG_VERSION "1.9.9" -#define ZLIBNG_VERNUM 0x1990 -#define ZLIBNG_VER_MAJOR 1 -#define ZLIBNG_VER_MINOR 9 -#define ZLIBNG_VER_REVISION 9 -#define ZLIBNG_VER_SUBREVISION 0 - -/* - The 'zlib' compression library provides in-memory compression and - decompression functions, including integrity checks of the uncompressed data. - This version of the library supports only one compression method (deflation) - but other algorithms will be added later and will have the same stream - interface. - - Compression can be done in a single step if the buffers are large enough, - or can be done by repeated calls of the compression function. In the latter - case, the application must provide more input and/or consume the output - (providing more output space) before each call. - - The compressed data format used by default by the in-memory functions is - the zlib format, which is a zlib wrapper documented in RFC 1950, wrapped - around a deflate stream, which is itself documented in RFC 1951. - - The library also supports reading and writing files in gzip (.gz) format - with an interface similar to that of stdio using the functions that start - with "gz". The gzip format is different from the zlib format. gzip is a - gzip wrapper, documented in RFC 1952, wrapped around a deflate stream. - - This library can optionally read and write gzip and raw deflate streams in - memory as well. - - The zlib format was designed to be compact and fast for use in memory - and on communications channels. The gzip format was designed for single- - file compression on file systems, has a larger header than zlib to maintain - directory information, and uses a different, slower check method than zlib. - - The library does not install any signal handler. The decoder checks - the consistency of the compressed data, so the library should never crash - even in the case of corrupted input. -*/ - -typedef void *(*alloc_func) (void *opaque, unsigned int items, unsigned int size); -typedef void (*free_func) (void *opaque, void *address); - -struct internal_state; - -typedef struct zng_stream_s { - const unsigned char *next_in; /* next input byte */ - uint32_t avail_in; /* number of bytes available at next_in */ - size_t total_in; /* total number of input bytes read so far */ - - unsigned char *next_out; /* next output byte will go here */ - uint32_t avail_out; /* remaining free space at next_out */ - size_t total_out; /* total number of bytes output so far */ - - const char *msg; /* last error message, NULL if no error */ - struct internal_state *state; /* not visible by applications */ - - alloc_func zalloc; /* used to allocate the internal state */ - free_func zfree; /* used to free the internal state */ - void *opaque; /* private data object passed to zalloc and zfree */ - - int data_type; /* best guess about the data type: binary or text - for deflate, or the decoding state for inflate */ - uint32_t adler; /* Adler-32 or CRC-32 value of the uncompressed data */ - unsigned long reserved; /* reserved for future use */ -} zng_stream; - -typedef zng_stream *zng_streamp; /* Obsolete type, retained for compatibility only */ - -/* - gzip header information passed to and from zlib routines. See RFC 1952 - for more details on the meanings of these fields. -*/ -typedef struct zng_gz_header_s { - int text; /* true if compressed data believed to be text */ - unsigned long time; /* modification time */ - int xflags; /* extra flags (not used when writing a gzip file) */ - int os; /* operating system */ - unsigned char *extra; /* pointer to extra field or NULL if none */ - unsigned int extra_len; /* extra field length (valid if extra != NULL) */ - unsigned int extra_max; /* space at extra (only when reading header) */ - unsigned char *name; /* pointer to zero-terminated file name or NULL */ - unsigned int name_max; /* space at name (only when reading header) */ - unsigned char *comment; /* pointer to zero-terminated comment or NULL */ - unsigned int comm_max; /* space at comment (only when reading header) */ - int hcrc; /* true if there was or will be a header crc */ - int done; /* true when done reading gzip header (not used when writing a gzip file) */ -} zng_gz_header; - -typedef zng_gz_header *zng_gz_headerp; - -/* - The application must update next_in and avail_in when avail_in has dropped - to zero. It must update next_out and avail_out when avail_out has dropped - to zero. The application must initialize zalloc, zfree and opaque before - calling the init function. All other fields are set by the compression - library and must not be updated by the application. - - The opaque value provided by the application will be passed as the first - parameter for calls of zalloc and zfree. This can be useful for custom - memory management. The compression library attaches no meaning to the - opaque value. - - zalloc must return NULL if there is not enough memory for the object. - If zlib is used in a multi-threaded application, zalloc and zfree must be - thread safe. In that case, zlib is thread-safe. When zalloc and zfree are - Z_NULL on entry to the initialization function, they are set to internal - routines that use the standard library functions malloc() and free(). - - The fields total_in and total_out can be used for statistics or progress - reports. After compression, total_in holds the total size of the - uncompressed data and may be saved for use by the decompressor (particularly - if the decompressor wants to decompress everything in a single step). -*/ - - /* constants */ - -#define Z_NO_FLUSH 0 -#define Z_PARTIAL_FLUSH 1 -#define Z_SYNC_FLUSH 2 -#define Z_FULL_FLUSH 3 -#define Z_FINISH 4 -#define Z_BLOCK 5 -#define Z_TREES 6 -/* Allowed flush values; see deflate() and inflate() below for details */ - -#define Z_OK 0 -#define Z_STREAM_END 1 -#define Z_NEED_DICT 2 -#define Z_ERRNO (-1) -#define Z_STREAM_ERROR (-2) -#define Z_DATA_ERROR (-3) -#define Z_MEM_ERROR (-4) -#define Z_BUF_ERROR (-5) -#define Z_VERSION_ERROR (-6) -/* Return codes for the compression/decompression functions. Negative values - * are errors, positive values are used for special but normal events. - */ - -#define Z_NO_COMPRESSION 0 -#define Z_BEST_SPEED 1 -#define Z_BEST_COMPRESSION 9 -#define Z_DEFAULT_COMPRESSION (-1) -/* compression levels */ - -#define Z_FILTERED 1 -#define Z_HUFFMAN_ONLY 2 -#define Z_RLE 3 -#define Z_FIXED 4 -#define Z_DEFAULT_STRATEGY 0 -/* compression strategy; see deflateInit2() below for details */ - -#define Z_BINARY 0 -#define Z_TEXT 1 -#define Z_ASCII Z_TEXT /* for compatibility with 1.2.2 and earlier */ -#define Z_UNKNOWN 2 -/* Possible values of the data_type field for deflate() */ - -#define Z_DEFLATED 8 -/* The deflate compression method (the only one supported in this version) */ - -#define Z_NULL NULL /* for compatibility with zlib, was for initializing zalloc, zfree, opaque */ - - - /* basic functions */ - -ZEXTERN const char * ZEXPORT zlibng_version(void); -/* The application can compare zlibng_version and ZLIBNG_VERSION for consistency. - If the first character differs, the library code actually used is not - compatible with the zlib-ng.h header file used by the application. This check - is automatically made by deflateInit and inflateInit. - */ - -/* -ZEXTERN int ZEXPORT zng_deflateInit (zng_stream *strm, int level); - - Initializes the internal stream state for compression. The fields - zalloc, zfree and opaque must be initialized before by the caller. If - zalloc and zfree are set to NULL, deflateInit updates them to use default - allocation functions. - - The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9: - 1 gives best speed, 9 gives best compression, 0 gives no compression at all - (the input data is simply copied a block at a time). Z_DEFAULT_COMPRESSION - requests a default compromise between speed and compression (currently - equivalent to level 6). - - deflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough - memory, Z_STREAM_ERROR if level is not a valid compression level, or - Z_VERSION_ERROR if the zlib library version (zng_version) is incompatible - with the version assumed by the caller (ZLIBNG_VERSION). msg is set to null - if there is no error message. deflateInit does not perform any compression: - this will be done by deflate(). -*/ - - -ZEXTERN int ZEXPORT zng_deflate(zng_stream *strm, int flush); -/* - deflate compresses as much data as possible, and stops when the input - buffer becomes empty or the output buffer becomes full. It may introduce - some output latency (reading input without producing any output) except when - forced to flush. - - The detailed semantics are as follows. deflate performs one or both of the - following actions: - - - Compress more input starting at next_in and update next_in and avail_in - accordingly. If not all input can be processed (because there is not - enough room in the output buffer), next_in and avail_in are updated and - processing will resume at this point for the next call of deflate(). - - - Generate more output starting at next_out and update next_out and avail_out - accordingly. This action is forced if the parameter flush is non zero. - Forcing flush frequently degrades the compression ratio, so this parameter - should be set only when necessary. Some output may be provided even if - flush is zero. - - Before the call of deflate(), the application should ensure that at least - one of the actions is possible, by providing more input and/or consuming more - output, and updating avail_in or avail_out accordingly; avail_out should - never be zero before the call. The application can consume the compressed - output when it wants, for example when the output buffer is full (avail_out - == 0), or after each call of deflate(). If deflate returns Z_OK and with - zero avail_out, it must be called again after making room in the output - buffer because there might be more output pending. See deflatePending(), - which can be used if desired to determine whether or not there is more ouput - in that case. - - Normally the parameter flush is set to Z_NO_FLUSH, which allows deflate to - decide how much data to accumulate before producing output, in order to - maximize compression. - - If the parameter flush is set to Z_SYNC_FLUSH, all pending output is - flushed to the output buffer and the output is aligned on a byte boundary, so - that the decompressor can get all input data available so far. (In - particular avail_in is zero after the call if enough output space has been - provided before the call.) Flushing may degrade compression for some - compression algorithms and so it should be used only when necessary. This - completes the current deflate block and follows it with an empty stored block - that is three bits plus filler bits to the next byte, followed by four bytes - (00 00 ff ff). - - If flush is set to Z_PARTIAL_FLUSH, all pending output is flushed to the - output buffer, but the output is not aligned to a byte boundary. All of the - input data so far will be available to the decompressor, as for Z_SYNC_FLUSH. - This completes the current deflate block and follows it with an empty fixed - codes block that is 10 bits long. This assures that enough bytes are output - in order for the decompressor to finish the block before the empty fixed - codes block. - - If flush is set to Z_BLOCK, a deflate block is completed and emitted, as - for Z_SYNC_FLUSH, but the output is not aligned on a byte boundary, and up to - seven bits of the current block are held to be written as the next byte after - the next deflate block is completed. In this case, the decompressor may not - be provided enough bits at this point in order to complete decompression of - the data provided so far to the compressor. It may need to wait for the next - block to be emitted. This is for advanced applications that need to control - the emission of deflate blocks. - - If flush is set to Z_FULL_FLUSH, all output is flushed as with - Z_SYNC_FLUSH, and the compression state is reset so that decompression can - restart from this point if previous compressed data has been damaged or if - random access is desired. Using Z_FULL_FLUSH too often can seriously degrade - compression. - - If deflate returns with avail_out == 0, this function must be called again - with the same value of the flush parameter and more output space (updated - avail_out), until the flush is complete (deflate returns with non-zero - avail_out). In the case of a Z_FULL_FLUSH or Z_SYNC_FLUSH, make sure that - avail_out is greater than six to avoid repeated flush markers due to - avail_out == 0 on return. - - If the parameter flush is set to Z_FINISH, pending input is processed, - pending output is flushed and deflate returns with Z_STREAM_END if there was - enough output space. If deflate returns with Z_OK or Z_BUF_ERROR, this - function must be called again with Z_FINISH and more output space (updated - avail_out) but no more input data, until it returns with Z_STREAM_END or an - error. After deflate has returned Z_STREAM_END, the only possible operations - on the stream are deflateReset or deflateEnd. - - Z_FINISH can be used in the first deflate call after deflateInit if all the - compression is to be done in a single step. In order to complete in one - call, avail_out must be at least the value returned by deflateBound (see - below). Then deflate is guaranteed to return Z_STREAM_END. If not enough - output space is provided, deflate will not return Z_STREAM_END, and it must - be called again as described above. - - deflate() sets strm->adler to the Adler-32 checksum of all input read - so far (that is, total_in bytes). If a gzip stream is being generated, then - strm->adler will be the CRC-32 checksum of the input read so far. (See - deflateInit2 below.) - - deflate() may update strm->data_type if it can make a good guess about - the input data type (Z_BINARY or Z_TEXT). If in doubt, the data is - considered binary. This field is only for information purposes and does not - affect the compression algorithm in any manner. - - deflate() returns Z_OK if some progress has been made (more input - processed or more output produced), Z_STREAM_END if all input has been - consumed and all output has been produced (only when flush is set to - Z_FINISH), Z_STREAM_ERROR if the stream state was inconsistent (for example - if next_in or next_out was NULL) or the state was inadvertently written over - by the application), or Z_BUF_ERROR if no progress is possible (for example - avail_in or avail_out was zero). Note that Z_BUF_ERROR is not fatal, and - deflate() can be called again with more input and more output space to - continue compressing. -*/ - - -ZEXTERN int ZEXPORT zng_deflateEnd(zng_stream *strm); -/* - All dynamically allocated data structures for this stream are freed. - This function discards any unprocessed input and does not flush any pending - output. - - deflateEnd returns Z_OK if success, Z_STREAM_ERROR if the - stream state was inconsistent, Z_DATA_ERROR if the stream was freed - prematurely (some input or output was discarded). In the error case, msg - may be set but then points to a static string (which must not be - deallocated). -*/ - - -/* -ZEXTERN int ZEXPORT zng_inflateInit (zng_stream *strm); - - Initializes the internal stream state for decompression. The fields - next_in, avail_in, zalloc, zfree and opaque must be initialized before by - the caller. In the current version of inflate, the provided input is not - read or consumed. The allocation of a sliding window will be deferred to - the first call of inflate (if the decompression does not complete on the - first call). If zalloc and zfree are set to NULL, inflateInit updates - them to use default allocation functions. - - inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough - memory, Z_VERSION_ERROR if the zlib library version is incompatible with the - version assumed by the caller, or Z_STREAM_ERROR if the parameters are - invalid, such as a null pointer to the structure. msg is set to null if - there is no error message. inflateInit does not perform any decompression. - Actual decompression will be done by inflate(). So next_in, and avail_in, - next_out, and avail_out are unused and unchanged. The current - implementation of inflateInit() does not process any header information -- - that is deferred until inflate() is called. -*/ - - -ZEXTERN int ZEXPORT zng_inflate(zng_stream *strm, int flush); -/* - inflate decompresses as much data as possible, and stops when the input - buffer becomes empty or the output buffer becomes full. It may introduce - some output latency (reading input without producing any output) except when - forced to flush. - - The detailed semantics are as follows. inflate performs one or both of the - following actions: - - - Decompress more input starting at next_in and update next_in and avail_in - accordingly. If not all input can be processed (because there is not - enough room in the output buffer), then next_in and avail_in are updated - accordingly, and processing will resume at this point for the next call of - inflate(). - - - Generate more output starting at next_out and update next_out and avail_out - accordingly. inflate() provides as much output as possible, until there is - no more input data or no more space in the output buffer (see below about - the flush parameter). - - Before the call of inflate(), the application should ensure that at least - one of the actions is possible, by providing more input and/or consuming more - output, and updating the next_* and avail_* values accordingly. If the - caller of inflate() does not provide both available input and available - output space, it is possible that there will be no progress made. The - application can consume the uncompressed output when it wants, for example - when the output buffer is full (avail_out == 0), or after each call of - inflate(). If inflate returns Z_OK and with zero avail_out, it must be - called again after making room in the output buffer because there might be - more output pending. - - The flush parameter of inflate() can be Z_NO_FLUSH, Z_SYNC_FLUSH, Z_FINISH, - Z_BLOCK, or Z_TREES. Z_SYNC_FLUSH requests that inflate() flush as much - output as possible to the output buffer. Z_BLOCK requests that inflate() - stop if and when it gets to the next deflate block boundary. When decoding - the zlib or gzip format, this will cause inflate() to return immediately - after the header and before the first block. When doing a raw inflate, - inflate() will go ahead and process the first block, and will return when it - gets to the end of that block, or when it runs out of data. - - The Z_BLOCK option assists in appending to or combining deflate streams. - To assist in this, on return inflate() always sets strm->data_type to the - number of unused bits in the last byte taken from strm->next_in, plus 64 if - inflate() is currently decoding the last block in the deflate stream, plus - 128 if inflate() returned immediately after decoding an end-of-block code or - decoding the complete header up to just before the first byte of the deflate - stream. The end-of-block will not be indicated until all of the uncompressed - data from that block has been written to strm->next_out. The number of - unused bits may in general be greater than seven, except when bit 7 of - data_type is set, in which case the number of unused bits will be less than - eight. data_type is set as noted here every time inflate() returns for all - flush options, and so can be used to determine the amount of currently - consumed input in bits. - - The Z_TREES option behaves as Z_BLOCK does, but it also returns when the - end of each deflate block header is reached, before any actual data in that - block is decoded. This allows the caller to determine the length of the - deflate block header for later use in random access within a deflate block. - 256 is added to the value of strm->data_type when inflate() returns - immediately after reaching the end of the deflate block header. - - inflate() should normally be called until it returns Z_STREAM_END or an - error. However if all decompression is to be performed in a single step (a - single call of inflate), the parameter flush should be set to Z_FINISH. In - this case all pending input is processed and all pending output is flushed; - avail_out must be large enough to hold all of the uncompressed data for the - operation to complete. (The size of the uncompressed data may have been - saved by the compressor for this purpose.) The use of Z_FINISH is not - required to perform an inflation in one step. However it may be used to - inform inflate that a faster approach can be used for the single inflate() - call. Z_FINISH also informs inflate to not maintain a sliding window if the - stream completes, which reduces inflate's memory footprint. If the stream - does not complete, either because not all of the stream is provided or not - enough output space is provided, then a sliding window will be allocated and - inflate() can be called again to continue the operation as if Z_NO_FLUSH had - been used. - - In this implementation, inflate() always flushes as much output as - possible to the output buffer, and always uses the faster approach on the - first call. So the effects of the flush parameter in this implementation are - on the return value of inflate() as noted below, when inflate() returns early - when Z_BLOCK or Z_TREES is used, and when inflate() avoids the allocation of - memory for a sliding window when Z_FINISH is used. - - If a preset dictionary is needed after this call (see inflateSetDictionary - below), inflate sets strm->adler to the Adler-32 checksum of the dictionary - chosen by the compressor and returns Z_NEED_DICT; otherwise it sets - strm->adler to the Adler-32 checksum of all output produced so far (that is, - total_out bytes) and returns Z_OK, Z_STREAM_END or an error code as described - below. At the end of the stream, inflate() checks that its computed Adler-32 - checksum is equal to that saved by the compressor and returns Z_STREAM_END - only if the checksum is correct. - - inflate() can decompress and check either zlib-wrapped or gzip-wrapped - deflate data. The header type is detected automatically, if requested when - initializing with inflateInit2(). Any information contained in the gzip - header is not retained unless inflateGetHeader() is used. When processing - gzip-wrapped deflate data, strm->adler32 is set to the CRC-32 of the output - produced so far. The CRC-32 is checked against the gzip trailer, as is the - uncompressed length, modulo 2^32. - - inflate() returns Z_OK if some progress has been made (more input processed - or more output produced), Z_STREAM_END if the end of the compressed data has - been reached and all uncompressed output has been produced, Z_NEED_DICT if a - preset dictionary is needed at this point, Z_DATA_ERROR if the input data was - corrupted (input stream not conforming to the zlib format or incorrect check - value, in which case strm->msg points to a string with a more specific - error), Z_STREAM_ERROR if the stream structure was inconsistent (for example - next_in or next_out was NULL, or the state was inadvertently written over - by the application), Z_MEM_ERROR if there was not enough memory, Z_BUF_ERROR - if no progress is possible or if there was not enough room in the output - buffer when Z_FINISH is used. Note that Z_BUF_ERROR is not fatal, and - inflate() can be called again with more input and more output space to - continue decompressing. If Z_DATA_ERROR is returned, the application may - then call inflateSync() to look for a good compression block if a partial - recovery of the data is to be attempted. -*/ - - -ZEXTERN int ZEXPORT zng_inflateEnd(zng_stream *strm); -/* - All dynamically allocated data structures for this stream are freed. - This function discards any unprocessed input and does not flush any pending - output. - - inflateEnd returns Z_OK if success, or Z_STREAM_ERROR if the stream state - was inconsistent. -*/ - - - /* Advanced functions */ - -/* - The following functions are needed only in some special applications. -*/ - -/* -ZEXTERN int ZEXPORT zng_deflateInit2 (zng_stream *strm, - int level, - int method, - int windowBits, - int memLevel, - int strategy); - - This is another version of deflateInit with more compression options. The - fields zalloc, zfree and opaque must be initialized before by the caller. - - The method parameter is the compression method. It must be Z_DEFLATED in - this version of the library. - - The windowBits parameter is the base two logarithm of the window size - (the size of the history buffer). It should be in the range 8..15 for this - version of the library. Larger values of this parameter result in better - compression at the expense of memory usage. The default value is 15 if - deflateInit is used instead. - - For the current implementation of deflate(), a windowBits value of 8 (a - window size of 256 bytes) is not supported. As a result, a request for 8 - will result in 9 (a 512-byte window). In that case, providing 8 to - inflateInit2() will result in an error when the zlib header with 9 is - checked against the initialization of inflate(). The remedy is to not use 8 - with deflateInit2() with this initialization, or at least in that case use 9 - with inflateInit2(). - - windowBits can also be -8..-15 for raw deflate. In this case, -windowBits - determines the window size. deflate() will then generate raw deflate data - with no zlib header or trailer, and will not compute a check value. - - windowBits can also be greater than 15 for optional gzip encoding. Add - 16 to windowBits to write a simple gzip header and trailer around the - compressed data instead of a zlib wrapper. The gzip header will have no - file name, no extra data, no comment, no modification time (set to zero), no - header crc, and the operating system will be set to the appropriate value, - if the operating system was determined at compile time. If a gzip stream is - being written, strm->adler is a CRC-32 instead of an Adler-32. - - For raw deflate or gzip encoding, a request for a 256-byte window is - rejected as invalid, since only the zlib header provides a means of - transmitting the window size to the decompressor. - - The memLevel parameter specifies how much memory should be allocated - for the internal compression state. memLevel=1 uses minimum memory but is - slow and reduces compression ratio; memLevel=9 uses maximum memory for - optimal speed. The default value is 8. See zconf.h for total memory usage - as a function of windowBits and memLevel. - - The strategy parameter is used to tune the compression algorithm. Use the - value Z_DEFAULT_STRATEGY for normal data, Z_FILTERED for data produced by a - filter (or predictor), Z_HUFFMAN_ONLY to force Huffman encoding only (no - string match), or Z_RLE to limit match distances to one (run-length - encoding). Filtered data consists mostly of small values with a somewhat - random distribution. In this case, the compression algorithm is tuned to - compress them better. The effect of Z_FILTERED is to force more Huffman - coding and less string matching; it is somewhat intermediate between - Z_DEFAULT_STRATEGY and Z_HUFFMAN_ONLY. Z_RLE is designed to be almost as - fast as Z_HUFFMAN_ONLY, but give better compression for PNG image data. The - strategy parameter only affects the compression ratio but not the - correctness of the compressed output even if it is not set appropriately. - Z_FIXED prevents the use of dynamic Huffman codes, allowing for a simpler - decoder for special applications. - - deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough - memory, Z_STREAM_ERROR if any parameter is invalid (such as an invalid - method), or Z_VERSION_ERROR if the zlib library version (zng_version) is - incompatible with the version assumed by the caller (ZLIBNG_VERSION). msg is - set to null if there is no error message. deflateInit2 does not perform any - compression: this will be done by deflate(). -*/ - -ZEXTERN int ZEXPORT zng_deflateSetDictionary(zng_stream *strm, - const unsigned char *dictionary, - unsigned int dictLength); -/* - Initializes the compression dictionary from the given byte sequence - without producing any compressed output. When using the zlib format, this - function must be called immediately after deflateInit, deflateInit2 or - deflateReset, and before any call of deflate. When doing raw deflate, this - function must be called either before any call of deflate, or immediately - after the completion of a deflate block, i.e. after all input has been - consumed and all output has been delivered when using any of the flush - options Z_BLOCK, Z_PARTIAL_FLUSH, Z_SYNC_FLUSH, or Z_FULL_FLUSH. The - compressor and decompressor must use exactly the same dictionary (see - inflateSetDictionary). - - The dictionary should consist of strings (byte sequences) that are likely - to be encountered later in the data to be compressed, with the most commonly - used strings preferably put towards the end of the dictionary. Using a - dictionary is most useful when the data to be compressed is short and can be - predicted with good accuracy; the data can then be compressed better than - with the default empty dictionary. - - Depending on the size of the compression data structures selected by - deflateInit or deflateInit2, a part of the dictionary may in effect be - discarded, for example if the dictionary is larger than the window size - provided in deflateInit or deflateInit2. Thus the strings most likely to be - useful should be put at the end of the dictionary, not at the front. In - addition, the current implementation of deflate will use at most the window - size minus 262 bytes of the provided dictionary. - - Upon return of this function, strm->adler is set to the Adler-32 value - of the dictionary; the decompressor may later use this value to determine - which dictionary has been used by the compressor. (The Adler-32 value - applies to the whole dictionary even if only a subset of the dictionary is - actually used by the compressor.) If a raw deflate was requested, then the - Adler-32 value is not computed and strm->adler is not set. - - deflateSetDictionary returns Z_OK if success, or Z_STREAM_ERROR if a - parameter is invalid (e.g. dictionary being NULL) or the stream state is - inconsistent (for example if deflate has already been called for this stream - or if not at a block boundary for raw deflate). deflateSetDictionary does - not perform any compression: this will be done by deflate(). -*/ - -ZEXTERN int ZEXPORT zng_deflateGetDictionary (zng_stream *strm, unsigned char *dictionary, unsigned int *dictLength); -/* - Returns the sliding dictionary being maintained by deflate. dictLength is - set to the number of bytes in the dictionary, and that many bytes are copied - to dictionary. dictionary must have enough space, where 32768 bytes is - always enough. If deflateGetDictionary() is called with dictionary equal to - Z_NULL, then only the dictionary length is returned, and nothing is copied. - Similary, if dictLength is Z_NULL, then it is not set. - - deflateGetDictionary() may return a length less than the window size, even - when more than the window size in input has been provided. It may return up - to 258 bytes less in that case, due to how zlib's implementation of deflate - manages the sliding window and lookahead for matches, where matches can be - up to 258 bytes long. If the application needs the last window-size bytes of - input, then that would need to be saved by the application outside of zlib. - - deflateGetDictionary returns Z_OK on success, or Z_STREAM_ERROR if the - stream state is inconsistent. -*/ - -ZEXTERN int ZEXPORT zng_deflateCopy(zng_stream *dest, zng_stream *source); -/* - Sets the destination stream as a complete copy of the source stream. - - This function can be useful when several compression strategies will be - tried, for example when there are several ways of pre-processing the input - data with a filter. The streams that will be discarded should then be freed - by calling deflateEnd. Note that deflateCopy duplicates the internal - compression state which can be quite large, so this strategy is slow and can - consume lots of memory. - - deflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not - enough memory, Z_STREAM_ERROR if the source stream state was inconsistent - (such as zalloc being NULL). msg is left unchanged in both source and - destination. -*/ - -ZEXTERN int ZEXPORT zng_deflateReset(zng_stream *strm); -/* - This function is equivalent to deflateEnd followed by deflateInit, but - does not free and reallocate the internal compression state. The stream - will leave the compression level and any other attributes that may have been - set unchanged. - - deflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source - stream state was inconsistent (such as zalloc or state being NULL). -*/ - -ZEXTERN int ZEXPORT zng_deflateParams(zng_stream *strm, int level, int strategy); -/* - Dynamically update the compression level and compression strategy. The - interpretation of level and strategy is as in deflateInit2(). This can be - used to switch between compression and straight copy of the input data, or - to switch to a different kind of input data requiring a different strategy. - If the compression approach (which is a function of the level) or the - strategy is changed, and if there have been any deflate() calls since the - state was initialized or reset, then the input available so far is - compressed with the old level and strategy using deflate(strm, Z_BLOCK). - There are three approaches for the compression levels 0, 1..3, and 4..9 - respectively. The new level and strategy will take effect at the next call - of deflate(). - - If a deflate(strm, Z_BLOCK) is performed by deflateParams(), and it does - not have enough output space to complete, then the parameter change will not - take effect. In this case, deflateParams() can be called again with the - same parameters and more output space to try again. - - In order to assure a change in the parameters on the first try, the - deflate stream should be flushed using deflate() with Z_BLOCK or other flush - request until strm.avail_out is not zero, before calling deflateParams(). - Then no more input data should be provided before the deflateParams() call. - If this is done, the old level and strategy will be applied to the data - compressed before deflateParams(), and the new level and strategy will be - applied to the the data compressed after deflateParams(). - - deflateParams returns Z_OK on success, Z_STREAM_ERROR if the source stream - state was inconsistent or if a parameter was invalid, or Z_BUF_ERROR if - there was not enough output space to complete the compression of the - available input data before a change in the strategy or approach. Note that - in the case of a Z_BUF_ERROR, the parameters are not changed. A return - value of Z_BUF_ERROR is not fatal, in which case deflateParams() can be - retried with more output space. -*/ - -ZEXTERN int ZEXPORT zng_deflateTune(zng_stream *strm, int good_length, int max_lazy, int nice_length, int max_chain); -/* - Fine tune deflate's internal compression parameters. This should only be - used by someone who understands the algorithm used by zlib's deflate for - searching for the best matching string, and even then only by the most - fanatic optimizer trying to squeeze out the last compressed bit for their - specific input data. Read the deflate.c source code for the meaning of the - max_lazy, good_length, nice_length, and max_chain parameters. - - deflateTune() can be called after deflateInit() or deflateInit2(), and - returns Z_OK on success, or Z_STREAM_ERROR for an invalid deflate stream. - */ - -ZEXTERN unsigned long ZEXPORT zng_deflateBound(zng_stream *strm, unsigned long sourceLen); -/* - deflateBound() returns an upper bound on the compressed size after - deflation of sourceLen bytes. It must be called after deflateInit() or - deflateInit2(), and after deflateSetHeader(), if used. This would be used - to allocate an output buffer for deflation in a single pass, and so would be - called before deflate(). If that first deflate() call is provided the - sourceLen input bytes, an output buffer allocated to the size returned by - deflateBound(), and the flush value Z_FINISH, then deflate() is guaranteed - to return Z_STREAM_END. Note that it is possible for the compressed size to - be larger than the value returned by deflateBound() if flush options other - than Z_FINISH or Z_NO_FLUSH are used. -*/ - -ZEXTERN int ZEXPORT zng_deflatePending(zng_stream *strm, uint32_t *pending, int *bits); -/* - deflatePending() returns the number of bytes and bits of output that have - been generated, but not yet provided in the available output. The bytes not - provided would be due to the available output space having being consumed. - The number of bits of output not provided are between 0 and 7, where they - await more bits to join them in order to fill out a full byte. If pending - or bits are NULL, then those values are not set. - - deflatePending returns Z_OK if success, or Z_STREAM_ERROR if the source - stream state was inconsistent. - */ - -ZEXTERN int ZEXPORT zng_deflatePrime(zng_stream *strm, int bits, int value); -/* - deflatePrime() inserts bits in the deflate output stream. The intent - is that this function is used to start off the deflate output with the bits - leftover from a previous deflate stream when appending to it. As such, this - function can only be used for raw deflate, and must be used before the first - deflate() call after a deflateInit2() or deflateReset(). bits must be less - than or equal to 16, and that many of the least significant bits of value - will be inserted in the output. - - deflatePrime returns Z_OK if success, Z_BUF_ERROR if there was not enough - room in the internal buffer to insert the bits, or Z_STREAM_ERROR if the - source stream state was inconsistent. -*/ - -ZEXTERN int ZEXPORT zng_deflateSetHeader(zng_stream *strm, zng_gz_headerp head); -/* - deflateSetHeader() provides gzip header information for when a gzip - stream is requested by deflateInit2(). deflateSetHeader() may be called - after deflateInit2() or deflateReset() and before the first call of - deflate(). The text, time, os, extra field, name, and comment information - in the provided zng_gz_header structure are written to the gzip header (xflag is - ignored -- the extra flags are set according to the compression level). The - caller must assure that, if not NULL, name and comment are terminated with - a zero byte, and that if extra is not NULL, that extra_len bytes are - available there. If hcrc is true, a gzip header crc is included. Note that - the current versions of the command-line version of gzip (up through version - 1.3.x) do not support header crc's, and will report that it is a "multi-part - gzip file" and give up. - - If deflateSetHeader is not used, the default gzip header has text false, - the time set to zero, and os set to 255, with no extra, name, or comment - fields. The gzip header is returned to the default state by deflateReset(). - - deflateSetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source - stream state was inconsistent. -*/ - -/* -ZEXTERN int ZEXPORT zng_inflateInit2(zng_stream *strm, int windowBits); - - This is another version of inflateInit with an extra parameter. The - fields next_in, avail_in, zalloc, zfree and opaque must be initialized - before by the caller. - - The windowBits parameter is the base two logarithm of the maximum window - size (the size of the history buffer). It should be in the range 8..15 for - this version of the library. The default value is 15 if inflateInit is used - instead. windowBits must be greater than or equal to the windowBits value - provided to deflateInit2() while compressing, or it must be equal to 15 if - deflateInit2() was not used. If a compressed stream with a larger window - size is given as input, inflate() will return with the error code - Z_DATA_ERROR instead of trying to allocate a larger window. - - windowBits can also be zero to request that inflate use the window size in - the zlib header of the compressed stream. - - windowBits can also be -8..-15 for raw inflate. In this case, -windowBits - determines the window size. inflate() will then process raw deflate data, - not looking for a zlib or gzip header, not generating a check value, and not - looking for any check values for comparison at the end of the stream. This - is for use with other formats that use the deflate compressed data format - such as zip. Those formats provide their own check values. If a custom - format is developed using the raw deflate format for compressed data, it is - recommended that a check value such as an Adler-32 or a CRC-32 be applied to - the uncompressed data as is done in the zlib, gzip, and zip formats. For - most applications, the zlib format should be used as is. Note that comments - above on the use in deflateInit2() applies to the magnitude of windowBits. - - windowBits can also be greater than 15 for optional gzip decoding. Add - 32 to windowBits to enable zlib and gzip decoding with automatic header - detection, or add 16 to decode only the gzip format (the zlib format will - return a Z_DATA_ERROR). If a gzip stream is being decoded, strm->adler is a - CRC-32 instead of an Adler-32. Unlike the gunzip utility and gzread() (see - below), inflate() will *not* automatically decode concatenated gzip members. - inflate() will return Z_STREAM_END at the end of the gzip member. The state - would need to be reset to continue decoding a subsequent gzip member. This - *must* be done if there is more data after a gzip member, in order for the - decompression to be compliant with the gzip standard (RFC 1952). - - inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough - memory, Z_VERSION_ERROR if the zlib library version is incompatible with the - version assumed by the caller, or Z_STREAM_ERROR if the parameters are - invalid, such as a null pointer to the structure. msg is set to null if - there is no error message. inflateInit2 does not perform any decompression - apart from possibly reading the zlib header if present: actual decompression - will be done by inflate(). (So next_in and avail_in may be modified, but - next_out and avail_out are unused and unchanged.) The current implementation - of inflateInit2() does not process any header information -- that is - deferred until inflate() is called. -*/ - -ZEXTERN int ZEXPORT zng_inflateSetDictionary(zng_stream *strm, const unsigned char *dictionary, unsigned int dictLength); -/* - Initializes the decompression dictionary from the given uncompressed byte - sequence. This function must be called immediately after a call of inflate, - if that call returned Z_NEED_DICT. The dictionary chosen by the compressor - can be determined from the Adler-32 value returned by that call of inflate. - The compressor and decompressor must use exactly the same dictionary (see - deflateSetDictionary). For raw inflate, this function can be called at any - time to set the dictionary. If the provided dictionary is smaller than the - window and there is already data in the window, then the provided dictionary - will amend what's there. The application must insure that the dictionary - that was used for compression is provided. - - inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a - parameter is invalid (e.g. dictionary being NULL) or the stream state is - inconsistent, Z_DATA_ERROR if the given dictionary doesn't match the - expected one (incorrect Adler-32 value). inflateSetDictionary does not - perform any decompression: this will be done by subsequent calls of - inflate(). -*/ - -ZEXTERN int ZEXPORT zng_inflateGetDictionary(zng_stream *strm, unsigned char *dictionary, unsigned int *dictLength); -/* - Returns the sliding dictionary being maintained by inflate. dictLength is - set to the number of bytes in the dictionary, and that many bytes are copied - to dictionary. dictionary must have enough space, where 32768 bytes is - always enough. If inflateGetDictionary() is called with dictionary equal to - NULL, then only the dictionary length is returned, and nothing is copied. - Similary, if dictLength is NULL, then it is not set. - - inflateGetDictionary returns Z_OK on success, or Z_STREAM_ERROR if the - stream state is inconsistent. -*/ - -ZEXTERN int ZEXPORT zng_inflateSync(zng_stream *strm); -/* - Skips invalid compressed data until a possible full flush point (see above - for the description of deflate with Z_FULL_FLUSH) can be found, or until all - available input is skipped. No output is provided. - - inflateSync searches for a 00 00 FF FF pattern in the compressed data. - All full flush points have this pattern, but not all occurrences of this - pattern are full flush points. - - inflateSync returns Z_OK if a possible full flush point has been found, - Z_BUF_ERROR if no more input was provided, Z_DATA_ERROR if no flush point - has been found, or Z_STREAM_ERROR if the stream structure was inconsistent. - In the success case, the application may save the current current value of - total_in which indicates where valid compressed data was found. In the - error case, the application may repeatedly call inflateSync, providing more - input each time, until success or end of the input data. -*/ - -ZEXTERN int ZEXPORT zng_inflateCopy(zng_stream *dest, zng_stream *source); -/* - Sets the destination stream as a complete copy of the source stream. - - This function can be useful when randomly accessing a large stream. The - first pass through the stream can periodically record the inflate state, - allowing restarting inflate at those points when randomly accessing the - stream. - - inflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not - enough memory, Z_STREAM_ERROR if the source stream state was inconsistent - (such as zalloc being NULL). msg is left unchanged in both source and - destination. -*/ - -ZEXTERN int ZEXPORT zng_inflateReset(zng_stream *strm); -/* - This function is equivalent to inflateEnd followed by inflateInit, - but does not free and reallocate the internal decompression state. The - stream will keep attributes that may have been set by inflateInit2. - - inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source - stream state was inconsistent (such as zalloc or state being NULL). -*/ - -ZEXTERN int ZEXPORT zng_inflateReset2(zng_stream *strm, int windowBits); -/* - This function is the same as inflateReset, but it also permits changing - the wrap and window size requests. The windowBits parameter is interpreted - the same as it is for inflateInit2. If the window size is changed, then the - memory allocated for the window is freed, and the window will be reallocated - by inflate() if needed. - - inflateReset2 returns Z_OK if success, or Z_STREAM_ERROR if the source - stream state was inconsistent (such as zalloc or state being NULL), or if - the windowBits parameter is invalid. -*/ - -ZEXTERN int ZEXPORT zng_inflatePrime(zng_stream *strm, int bits, int value); -/* - This function inserts bits in the inflate input stream. The intent is - that this function is used to start inflating at a bit position in the - middle of a byte. The provided bits will be used before any bytes are used - from next_in. This function should only be used with raw inflate, and - should be used before the first inflate() call after inflateInit2() or - inflateReset(). bits must be less than or equal to 16, and that many of the - least significant bits of value will be inserted in the input. - - If bits is negative, then the input stream bit buffer is emptied. Then - inflatePrime() can be called again to put bits in the buffer. This is used - to clear out bits leftover after feeding inflate a block description prior - to feeding inflate codes. - - inflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source - stream state was inconsistent. -*/ - -ZEXTERN long ZEXPORT zng_inflateMark(zng_stream *strm); -/* - This function returns two values, one in the lower 16 bits of the return - value, and the other in the remaining upper bits, obtained by shifting the - return value down 16 bits. If the upper value is -1 and the lower value is - zero, then inflate() is currently decoding information outside of a block. - If the upper value is -1 and the lower value is non-zero, then inflate is in - the middle of a stored block, with the lower value equaling the number of - bytes from the input remaining to copy. If the upper value is not -1, then - it is the number of bits back from the current bit position in the input of - the code (literal or length/distance pair) currently being processed. In - that case the lower value is the number of bytes already emitted for that - code. - - A code is being processed if inflate is waiting for more input to complete - decoding of the code, or if it has completed decoding but is waiting for - more output space to write the literal or match data. - - inflateMark() is used to mark locations in the input data for random - access, which may be at bit positions, and to note those cases where the - output of a code may span boundaries of random access blocks. The current - location in the input stream can be determined from avail_in and data_type - as noted in the description for the Z_BLOCK flush parameter for inflate. - - inflateMark returns the value noted above, or -65536 if the provided - source stream state was inconsistent. -*/ - -ZEXTERN int ZEXPORT zng_inflateGetHeader(zng_stream *strm, zng_gz_headerp head); -/* - inflateGetHeader() requests that gzip header information be stored in the - provided zng_gz_header structure. inflateGetHeader() may be called after - inflateInit2() or inflateReset(), and before the first call of inflate(). - As inflate() processes the gzip stream, head->done is zero until the header - is completed, at which time head->done is set to one. If a zlib stream is - being decoded, then head->done is set to -1 to indicate that there will be - no gzip header information forthcoming. Note that Z_BLOCK or Z_TREES can be - used to force inflate() to return immediately after header processing is - complete and before any actual data is decompressed. - - The text, time, xflags, and os fields are filled in with the gzip header - contents. hcrc is set to true if there is a header CRC. (The header CRC - was valid if done is set to one.) If extra is not NULL, then extra_max - contains the maximum number of bytes to write to extra. Once done is true, - extra_len contains the actual extra field length, and extra contains the - extra field, or that field truncated if extra_max is less than extra_len. - If name is not NULL, then up to name_max characters are written there, - terminated with a zero unless the length is greater than name_max. If - comment is not NULL, then up to comm_max characters are written there, - terminated with a zero unless the length is greater than comm_max. When any - of extra, name, or comment are not NULL and the respective field is not - present in the header, then that field is set to NULL to signal its - absence. This allows the use of deflateSetHeader() with the returned - structure to duplicate the header. However if those fields are set to - allocated memory, then the application will need to save those pointers - elsewhere so that they can be eventually freed. - - If inflateGetHeader is not used, then the header information is simply - discarded. The header is always checked for validity, including the header - CRC if present. inflateReset() will reset the process to discard the header - information. The application would need to call inflateGetHeader() again to - retrieve the header from the next gzip stream. - - inflateGetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source - stream state was inconsistent. -*/ - -/* -ZEXTERN int ZEXPORT zng_inflateBackInit (zng_stream *strm, int windowBits, unsigned char *window); - - Initialize the internal stream state for decompression using inflateBack() - calls. The fields zalloc, zfree and opaque in strm must be initialized - before the call. If zalloc and zfree are NULL, then the default library- - derived memory allocation routines are used. windowBits is the base two - logarithm of the window size, in the range 8..15. window is a caller - supplied buffer of that size. Except for special applications where it is - assured that deflate was used with small window sizes, windowBits must be 15 - and a 32K byte window must be supplied to be able to decompress general - deflate streams. - - See inflateBack() for the usage of these routines. - - inflateBackInit will return Z_OK on success, Z_STREAM_ERROR if any of - the parameters are invalid, Z_MEM_ERROR if the internal state could not be - allocated, or Z_VERSION_ERROR if the version of the library does not match - the version of the header file. -*/ - -typedef uint32_t (*in_func) (void *, const unsigned char * *); -typedef int (*out_func) (void *, unsigned char *, uint32_t); - -ZEXTERN int ZEXPORT zng_inflateBack(zng_stream *strm, in_func in, void *in_desc, out_func out, void *out_desc); -/* - inflateBack() does a raw inflate with a single call using a call-back - interface for input and output. This is potentially more efficient than - inflate() for file i/o applications, in that it avoids copying between the - output and the sliding window by simply making the window itself the output - buffer. inflate() can be faster on modern CPUs when used with large - buffers. inflateBack() trusts the application to not change the output - buffer passed by the output function, at least until inflateBack() returns. - - inflateBackInit() must be called first to allocate the internal state - and to initialize the state with the user-provided window buffer. - inflateBack() may then be used multiple times to inflate a complete, raw - deflate stream with each call. inflateBackEnd() is then called to free the - allocated state. - - A raw deflate stream is one with no zlib or gzip header or trailer. - This routine would normally be used in a utility that reads zip or gzip - files and writes out uncompressed files. The utility would decode the - header and process the trailer on its own, hence this routine expects only - the raw deflate stream to decompress. This is different from the default - behavior of inflate(), which expects a zlib header and trailer around the - deflate stream. - - inflateBack() uses two subroutines supplied by the caller that are then - called by inflateBack() for input and output. inflateBack() calls those - routines until it reads a complete deflate stream and writes out all of the - uncompressed data, or until it encounters an error. The function's - parameters and return types are defined above in the in_func and out_func - typedefs. inflateBack() will call in(in_desc, &buf) which should return the - number of bytes of provided input, and a pointer to that input in buf. If - there is no input available, in() must return zero -- buf is ignored in that - case -- and inflateBack() will return a buffer error. inflateBack() will - call out(out_desc, buf, len) to write the uncompressed data buf[0..len-1]. - out() should return zero on success, or non-zero on failure. If out() - returns non-zero, inflateBack() will return with an error. Neither in() nor - out() are permitted to change the contents of the window provided to - inflateBackInit(), which is also the buffer that out() uses to write from. - The length written by out() will be at most the window size. Any non-zero - amount of input may be provided by in(). - - For convenience, inflateBack() can be provided input on the first call by - setting strm->next_in and strm->avail_in. If that input is exhausted, then - in() will be called. Therefore strm->next_in must be initialized before - calling inflateBack(). If strm->next_in is NULL, then in() will be called - immediately for input. If strm->next_in is not NULL, then strm->avail_in - must also be initialized, and then if strm->avail_in is not zero, input will - initially be taken from strm->next_in[0 .. strm->avail_in - 1]. - - The in_desc and out_desc parameters of inflateBack() is passed as the - first parameter of in() and out() respectively when they are called. These - descriptors can be optionally used to pass any information that the caller- - supplied in() and out() functions need to do their job. - - On return, inflateBack() will set strm->next_in and strm->avail_in to - pass back any unused input that was provided by the last in() call. The - return values of inflateBack() can be Z_STREAM_END on success, Z_BUF_ERROR - if in() or out() returned an error, Z_DATA_ERROR if there was a format error - in the deflate stream (in which case strm->msg is set to indicate the nature - of the error), or Z_STREAM_ERROR if the stream was not properly initialized. - In the case of Z_BUF_ERROR, an input or output error can be distinguished - using strm->next_in which will be NULL only if in() returned an error. If - strm->next_in is not NULL, then the Z_BUF_ERROR was due to out() returning - non-zero. (in() will always be called before out(), so strm->next_in is - assured to be defined if out() returns non-zero.) Note that inflateBack() - cannot return Z_OK. -*/ - -ZEXTERN int ZEXPORT zng_inflateBackEnd(zng_stream *strm); -/* - All memory allocated by inflateBackInit() is freed. - - inflateBackEnd() returns Z_OK on success, or Z_STREAM_ERROR if the stream - state was inconsistent. -*/ - -ZEXTERN unsigned long ZEXPORT zng_zlibCompileFlags(void); -/* Return flags indicating compile-time options. - - Type sizes, two bits each, 00 = 16 bits, 01 = 32, 10 = 64, 11 = other: - 1.0: size of unsigned int - 3.2: size of unsigned long - 5.4: size of void * (pointer) - 7.6: size of z_off_t - - Compiler, assembler, and debug options: - 8: ZLIB_DEBUG - 9: ASMV or ASMINF -- use ASM code - 10: ZLIB_WINAPI -- exported functions use the WINAPI calling convention - 11: 0 (reserved) - - One-time table building (smaller code, but not thread-safe if true): - 12: BUILDFIXED -- build static block decoding tables when needed - 13: DYNAMIC_CRC_TABLE -- build CRC calculation tables when needed - 14,15: 0 (reserved) - - Library content (indicates missing functionality): - 16: NO_GZCOMPRESS -- gz* functions cannot compress (to avoid linking - deflate code when not needed) - 17: NO_GZIP -- deflate can't write gzip streams, and inflate can't detect - and decode gzip streams (to avoid linking crc code) - 18-19: 0 (reserved) - - Operation variations (changes in library functionality): - 20: PKZIP_BUG_WORKAROUND -- slightly more permissive inflate - 21: FASTEST -- deflate algorithm with only one, lowest compression level - 22,23: 0 (reserved) - - The sprintf variant used by gzprintf (zero is best): - 24: 0 = vs*, 1 = s* -- 1 means limited to 20 arguments after the format - 25: 0 = *nprintf, 1 = *printf -- 1 means gzprintf() not secure! - 26: 0 = returns value, 1 = void -- 1 means inferred string length returned - - Remainder: - 27-31: 0 (reserved) - */ - - - /* utility functions */ - -/* - The following utility functions are implemented on top of the basic - stream-oriented functions. To simplify the interface, some default options - are assumed (compression level and memory usage, standard memory allocation - functions). The source code of these utility functions can be modified if - you need special options. -*/ - -ZEXTERN int ZEXPORT zng_compress(unsigned char *dest, size_t *destLen, const unsigned char *source, size_t sourceLen); -/* - Compresses the source buffer into the destination buffer. sourceLen is - the byte length of the source buffer. Upon entry, destLen is the total size - of the destination buffer, which must be at least the value returned by - compressBound(sourceLen). Upon exit, destLen is the actual size of the - compressed data. compress() is equivalent to compress2() with a level - parameter of Z_DEFAULT_COMPRESSION. - - compress returns Z_OK if success, Z_MEM_ERROR if there was not - enough memory, Z_BUF_ERROR if there was not enough room in the output - buffer. -*/ - -ZEXTERN int ZEXPORT zng_compress2(unsigned char *dest, size_t *destLen, const unsigned char *source, - size_t sourceLen, int level); -/* - Compresses the source buffer into the destination buffer. The level - parameter has the same meaning as in deflateInit. sourceLen is the byte - length of the source buffer. Upon entry, destLen is the total size of the - destination buffer, which must be at least the value returned by - compressBound(sourceLen). Upon exit, destLen is the actual size of the - compressed data. - - compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough - memory, Z_BUF_ERROR if there was not enough room in the output buffer, - Z_STREAM_ERROR if the level parameter is invalid. -*/ - -ZEXTERN size_t ZEXPORT zng_compressBound(size_t sourceLen); -/* - compressBound() returns an upper bound on the compressed size after - compress() or compress2() on sourceLen bytes. It would be used before a - compress() or compress2() call to allocate the destination buffer. -*/ - -ZEXTERN int ZEXPORT zng_uncompress(unsigned char *dest, size_t *destLen, const unsigned char *source, size_t sourceLen); -/* - Decompresses the source buffer into the destination buffer. sourceLen is - the byte length of the source buffer. Upon entry, destLen is the total size - of the destination buffer, which must be large enough to hold the entire - uncompressed data. (The size of the uncompressed data must have been saved - previously by the compressor and transmitted to the decompressor by some - mechanism outside the scope of this compression library.) Upon exit, destLen - is the actual size of the uncompressed data. - - uncompress returns Z_OK if success, Z_MEM_ERROR if there was not - enough memory, Z_BUF_ERROR if there was not enough room in the output - buffer, or Z_DATA_ERROR if the input data was corrupted or incomplete. In - the case where there is not enough room, uncompress() will fill the output - buffer with the uncompressed data up to that point. -*/ - - -ZEXTERN int ZEXPORT zng_uncompress2 (unsigned char *dest, size_t *destLen, - const unsigned char *source, size_t *sourceLen); -/* - Same as uncompress, except that sourceLen is a pointer, where the - length of the source is *sourceLen. On return, *sourceLen is the number of - source bytes consumed. -*/ - - -#ifdef WITH_GZFILEOP - /* gzip file access functions */ - -/* - This library supports reading and writing files in gzip (.gz) format with - an interface similar to that of stdio, using the functions that start with - "gz". The gzip format is different from the zlib format. gzip is a gzip - wrapper, documented in RFC 1952, wrapped around a deflate stream. -*/ - -typedef struct gzFile_s *gzFile; /* semi-opaque gzip file descriptor */ - -/* -ZEXTERN gzFile ZEXPORT zng_gzopen(const char *path, const char *mode); - - Opens a gzip (.gz) file for reading or writing. The mode parameter is as - in fopen ("rb" or "wb") but can also include a compression level ("wb9") or - a strategy: 'f' for filtered data as in "wb6f", 'h' for Huffman-only - compression as in "wb1h", 'R' for run-length encoding as in "wb1R", or 'F' - for fixed code compression as in "wb9F". (See the description of - deflateInit2 for more information about the strategy parameter.) 'T' will - request transparent writing or appending with no compression and not using - the gzip format. - - "a" can be used instead of "w" to request that the gzip stream that will - be written be appended to the file. "+" will result in an error, since - reading and writing to the same gzip file is not supported. The addition of - "x" when writing will create the file exclusively, which fails if the file - already exists. On systems that support it, the addition of "e" when - reading or writing will set the flag to close the file on an execve() call. - - These functions, as well as gzip, will read and decode a sequence of gzip - streams in a file. The append function of gzopen() can be used to create - such a file. (Also see gzflush() for another way to do this.) When - appending, gzopen does not test whether the file begins with a gzip stream, - nor does it look for the end of the gzip streams to begin appending. gzopen - will simply append a gzip stream to the existing file. - - gzopen can be used to read a file which is not in gzip format; in this - case gzread will directly read from the file without decompression. When - reading, this will be detected automatically by looking for the magic two- - byte gzip header. - - gzopen returns NULL if the file could not be opened, if there was - insufficient memory to allocate the gzFile state, or if an invalid mode was - specified (an 'r', 'w', or 'a' was not provided, or '+' was provided). - errno can be checked to determine if the reason gzopen failed was that the - file could not be opened. -*/ - -ZEXTERN gzFile ZEXPORT zng_gzdopen(int fd, const char *mode); -/* - gzdopen associates a gzFile with the file descriptor fd. File descriptors - are obtained from calls like open, dup, creat, pipe or fileno (if the file - has been previously opened with fopen). The mode parameter is as in gzopen. - - The next call of gzclose on the returned gzFile will also close the file - descriptor fd, just like fclose(fdopen(fd, mode)) closes the file descriptor - fd. If you want to keep fd open, use fd = dup(fd_keep); gz = gzdopen(fd, - mode);. The duplicated descriptor should be saved to avoid a leak, since - gzdopen does not close fd if it fails. If you are using fileno() to get the - file descriptor from a FILE *, then you will have to use dup() to avoid - double-close()ing the file descriptor. Both gzclose() and fclose() will - close the associated file descriptor, so they need to have different file - descriptors. - - gzdopen returns NULL if there was insufficient memory to allocate the - gzFile state, if an invalid mode was specified (an 'r', 'w', or 'a' was not - provided, or '+' was provided), or if fd is -1. The file descriptor is not - used until the next gz* read, write, seek, or close operation, so gzdopen - will not detect if fd is invalid (unless fd is -1). -*/ - -ZEXTERN int ZEXPORT zng_gzbuffer(gzFile file, unsigned size); -/* - Set the internal buffer size used by this library's functions. The - default buffer size is 8192 bytes. This function must be called after - gzopen() or gzdopen(), and before any other calls that read or write the - file. The buffer memory allocation is always deferred to the first read or - write. Three times that size in buffer space is allocated. A larger buffer - size of, for example, 64K or 128K bytes will noticeably increase the speed - of decompression (reading). - - The new buffer size also affects the maximum length for gzprintf(). - - gzbuffer() returns 0 on success, or -1 on failure, such as being called - too late. -*/ - -ZEXTERN int ZEXPORT zng_gzsetparams(gzFile file, int level, int strategy); -/* - Dynamically update the compression level or strategy. See the description - of deflateInit2 for the meaning of these parameters. Previously provided - data is flushed before the parameter change. - - gzsetparams returns Z_OK if success, Z_STREAM_ERROR if the file was not - opened for writing, Z_ERRNO if there is an error writing the flushed data, - or Z_MEM_ERROR if there is a memory allocation error. -*/ - -ZEXTERN int ZEXPORT zng_gzread(gzFile file, void *buf, unsigned len); -/* - Reads the given number of uncompressed bytes from the compressed file. If - the input file is not in gzip format, gzread copies the given number of - bytes into the buffer directly from the file. - - After reaching the end of a gzip stream in the input, gzread will continue - to read, looking for another gzip stream. Any number of gzip streams may be - concatenated in the input file, and will all be decompressed by gzread(). - If something other than a gzip stream is encountered after a gzip stream, - that remaining trailing garbage is ignored (and no error is returned). - - gzread can be used to read a gzip file that is being concurrently written. - Upon reaching the end of the input, gzread will return with the available - data. If the error code returned by gzerror is Z_OK or Z_BUF_ERROR, then - gzclearerr can be used to clear the end of file indicator in order to permit - gzread to be tried again. Z_OK indicates that a gzip stream was completed - on the last gzread. Z_BUF_ERROR indicates that the input file ended in the - middle of a gzip stream. Note that gzread does not return -1 in the event - of an incomplete gzip stream. This error is deferred until gzclose(), which - will return Z_BUF_ERROR if the last gzread ended in the middle of a gzip - stream. Alternatively, gzerror can be used before gzclose to detect this - case. - - gzread returns the number of uncompressed bytes actually read, less than - len for end of file, or -1 for error. If len is too large to fit in an int, - then nothing is read, -1 is returned, and the error state is set to - Z_STREAM_ERROR. -*/ - -ZEXTERN size_t ZEXPORT zng_gzfread (void *buf, size_t size, size_t nitems, gzFile file); -/* - Read up to nitems items of size size from file to buf, otherwise operating - as gzread() does. This duplicates the interface of stdio's fread(), with - size_t request and return types. - - gzfread() returns the number of full items read of size size, or zero if - the end of the file was reached and a full item could not be read, or if - there was an error. gzerror() must be consulted if zero is returned in - order to determine if there was an error. If the multiplication of size and - nitems overflows, i.e. the product does not fit in a size_t, then nothing - is read, zero is returned, and the error state is set to Z_STREAM_ERROR. - - In the event that the end of file is reached and only a partial item is - available at the end, i.e. the remaining uncompressed data length is not a - multiple of size, then the final partial item is nevertheless read into buf - and the end-of-file flag is set. The length of the partial item read is not - provided, but could be inferred from the result of gztell(). This behavior - is the same as the behavior of fread() implementations in common libraries, - but it prevents the direct use of gzfread() to read a concurrently written - file, reseting and retrying on end-of-file, when size is not 1. -*/ - -ZEXTERN int ZEXPORT zng_gzwrite(gzFile file, void const *buf, unsigned len); -/* - Writes the given number of uncompressed bytes into the compressed file. - gzwrite returns the number of uncompressed bytes written or 0 in case of - error. -*/ - -ZEXTERN size_t ZEXPORT zng_gzfwrite(void const *buf, size_t size, size_t nitems, gzFile file); -/* - gzfwrite() writes nitems items of size size from buf to file, duplicating - the interface of stdio's fwrite(), with size_t request and return types. - - gzfwrite() returns the number of full items written of size size, or zero - if there was an error. If the multiplication of size and nitems overflows, - i.e. the product does not fit in a size_t, then nothing is written, zero - is returned, and the error state is set to Z_STREAM_ERROR. -*/ - -ZEXTERN int ZEXPORTVA zng_gzprintf(gzFile file, const char *format, ...); -/* - Converts, formats, and writes the arguments to the compressed file under - control of the format string, as in fprintf. gzprintf returns the number of - uncompressed bytes actually written, or a negative zlib error code in case - of error. The number of uncompressed bytes written is limited to 8191, or - one less than the buffer size given to gzbuffer(). The caller should assure - that this limit is not exceeded. If it is exceeded, then gzprintf() will - return an error (0) with nothing written. In this case, there may also be a - buffer overflow with unpredictable consequences, which is possible only if - zlib was compiled with the insecure functions sprintf() or vsprintf() - because the secure snprintf() or vsnprintf() functions were not available. - This can be determined using zlibCompileFlags(). -*/ - -ZEXTERN int ZEXPORT zng_gzputs(gzFile file, const char *s); -/* - Writes the given null-terminated string to the compressed file, excluding - the terminating null character. - - gzputs returns the number of characters written, or -1 in case of error. -*/ - -ZEXTERN char * ZEXPORT zng_gzgets(gzFile file, char *buf, int len); -/* - Reads bytes from the compressed file until len-1 characters are read, or a - newline character is read and transferred to buf, or an end-of-file - condition is encountered. If any characters are read or if len == 1, the - string is terminated with a null character. If no characters are read due - to an end-of-file or len < 1, then the buffer is left untouched. - - gzgets returns buf which is a null-terminated string, or it returns NULL - for end-of-file or in case of error. If there was an error, the contents at - buf are indeterminate. -*/ - -ZEXTERN int ZEXPORT zng_gzputc(gzFile file, int c); -/* - Writes c, converted to an unsigned char, into the compressed file. gzputc - returns the value that was written, or -1 in case of error. -*/ - -ZEXTERN int ZEXPORT zng_gzgetc(gzFile file); -/* - Reads one byte from the compressed file. gzgetc returns this byte or -1 - in case of end of file or error. This is implemented as a macro for speed. - As such, it does not do all of the checking the other functions do. I.e. - it does not check to see if file is NULL, nor whether the structure file - points to has been clobbered or not. -*/ - -ZEXTERN int ZEXPORT zng_gzungetc(int c, gzFile file); -/* - Push one character back onto the stream to be read as the first character - on the next read. At least one character of push-back is allowed. - gzungetc() returns the character pushed, or -1 on failure. gzungetc() will - fail if c is -1, and may fail if a character has been pushed but not read - yet. If gzungetc is used immediately after gzopen or gzdopen, at least the - output buffer size of pushed characters is allowed. (See gzbuffer above.) - The pushed character will be discarded if the stream is repositioned with - gzseek() or gzrewind(). -*/ - -ZEXTERN int ZEXPORT zng_gzflush(gzFile file, int flush); -/* - Flushes all pending output into the compressed file. The parameter flush - is as in the deflate() function. The return value is the zlib error number - (see function gzerror below). gzflush is only permitted when writing. - - If the flush parameter is Z_FINISH, the remaining data is written and the - gzip stream is completed in the output. If gzwrite() is called again, a new - gzip stream will be started in the output. gzread() is able to read such - concatenated gzip streams. - - gzflush should be called only when strictly necessary because it will - degrade compression if called too often. -*/ - -/* -ZEXTERN z_off_t ZEXPORT zng_gzseek (gzFile file, z_off_t offset, int whence); - - Sets the starting position for the next gzread or gzwrite on the given - compressed file. The offset represents a number of bytes in the - uncompressed data stream. The whence parameter is defined as in lseek(2); - the value SEEK_END is not supported. - - If the file is opened for reading, this function is emulated but can be - extremely slow. If the file is opened for writing, only forward seeks are - supported; gzseek then compresses a sequence of zeroes up to the new - starting position. - - gzseek returns the resulting offset location as measured in bytes from - the beginning of the uncompressed stream, or -1 in case of error, in - particular if the file is opened for writing and the new starting position - would be before the current position. -*/ - -ZEXTERN int ZEXPORT zng_gzrewind(gzFile file); -/* - Rewinds the given file. This function is supported only for reading. - - gzrewind(file) is equivalent to (int)gzseek(file, 0L, SEEK_SET) -*/ - -/* -ZEXTERN z_off_t ZEXPORT zng_gztell(gzFile file); - - Returns the starting position for the next gzread or gzwrite on the given - compressed file. This position represents a number of bytes in the - uncompressed data stream, and is zero when starting, even if appending or - reading a gzip stream from the middle of a file using gzdopen(). - - gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR) -*/ - -/* -ZEXTERN z_off_t ZEXPORT zng_gzoffset(gzFile file); - - Returns the current offset in the file being read or written. This offset - includes the count of bytes that precede the gzip stream, for example when - appending or when using gzdopen() for reading. When reading, the offset - does not include as yet unused buffered input. This information can be used - for a progress indicator. On error, gzoffset() returns -1. -*/ - -ZEXTERN int ZEXPORT zng_gzeof(gzFile file); -/* - Returns true (1) if the end-of-file indicator has been set while reading, - false (0) otherwise. Note that the end-of-file indicator is set only if the - read tried to go past the end of the input, but came up short. Therefore, - just like feof(), gzeof() may return false even if there is no more data to - read, in the event that the last read request was for the exact number of - bytes remaining in the input file. This will happen if the input file size - is an exact multiple of the buffer size. - - If gzeof() returns true, then the read functions will return no more data, - unless the end-of-file indicator is reset by gzclearerr() and the input file - has grown since the previous end of file was detected. -*/ - -ZEXTERN int ZEXPORT zng_gzdirect(gzFile file); -/* - Returns true (1) if file is being copied directly while reading, or false - (0) if file is a gzip stream being decompressed. - - If the input file is empty, gzdirect() will return true, since the input - does not contain a gzip stream. - - If gzdirect() is used immediately after gzopen() or gzdopen() it will - cause buffers to be allocated to allow reading the file to determine if it - is a gzip file. Therefore if gzbuffer() is used, it should be called before - gzdirect(). - - When writing, gzdirect() returns true (1) if transparent writing was - requested ("wT" for the gzopen() mode), or false (0) otherwise. (Note: - gzdirect() is not needed when writing. Transparent writing must be - explicitly requested, so the application already knows the answer. When - linking statically, using gzdirect() will include all of the zlib code for - gzip file reading and decompression, which may not be desired.) -*/ - -ZEXTERN int ZEXPORT zng_gzclose(gzFile file); -/* - Flushes all pending output if necessary, closes the compressed file and - deallocates the (de)compression state. Note that once file is closed, you - cannot call gzerror with file, since its structures have been deallocated. - gzclose must not be called more than once on the same file, just as free - must not be called more than once on the same allocation. - - gzclose will return Z_STREAM_ERROR if file is not valid, Z_ERRNO on a - file operation error, Z_MEM_ERROR if out of memory, Z_BUF_ERROR if the - last read ended in the middle of a gzip stream, or Z_OK on success. -*/ - -ZEXTERN int ZEXPORT zng_gzclose_r(gzFile file); -ZEXTERN int ZEXPORT zng_gzclose_w(gzFile file); -/* - Same as gzclose(), but gzclose_r() is only for use when reading, and - gzclose_w() is only for use when writing or appending. The advantage to - using these instead of gzclose() is that they avoid linking in zlib - compression or decompression code that is not used when only reading or only - writing respectively. If gzclose() is used, then both compression and - decompression code will be included the application when linking to a static - zlib library. -*/ - -ZEXTERN const char * ZEXPORT zng_gzerror(gzFile file, int *errnum); -/* - Returns the error message for the last error which occurred on the given - compressed file. errnum is set to zlib error number. If an error occurred - in the file system and not in the compression library, errnum is set to - Z_ERRNO and the application may consult errno to get the exact error code. - - The application must not modify the returned string. Future calls to - this function may invalidate the previously returned string. If file is - closed, then the string previously returned by gzerror will no longer be - available. - - gzerror() should be used to distinguish errors from end-of-file for those - functions above that do not distinguish those cases in their return values. -*/ - -ZEXTERN void ZEXPORT zng_gzclearerr(gzFile file); -/* - Clears the error and end-of-file flags for file. This is analogous to the - clearerr() function in stdio. This is useful for continuing to read a gzip - file that is being written concurrently. -*/ - -#endif /* WITH_GZFILEOP */ - - /* checksum functions */ - -/* - These functions are not related to compression but are exported - anyway because they might be useful in applications using the compression - library. -*/ - -ZEXTERN uint32_t ZEXPORT zng_adler32(uint32_t adler, const unsigned char *buf, uint32_t len); -/* - Update a running Adler-32 checksum with the bytes buf[0..len-1] and - return the updated checksum. If buf is NULL, this function returns the - required initial value for the checksum. - - An Adler-32 checksum is almost as reliable as a CRC-32 but can be computed - much faster. - - Usage example: - - uint32_t adler = adler32(0L, NULL, 0); - - while (read_buffer(buffer, length) != EOF) { - adler = adler32(adler, buffer, length); - } - if (adler != original_adler) error(); -*/ - -ZEXTERN uint32_t ZEXPORT zng_adler32_z (uint32_t adler, const unsigned char *buf, size_t len); -/* - Same as adler32(), but with a size_t length. -*/ - -/* -ZEXTERN uint32_t ZEXPORT zng_adler32_combine(uint32_t adler1, uint32_t adler2, z_off_t len2); - - Combine two Adler-32 checksums into one. For two sequences of bytes, seq1 - and seq2 with lengths len1 and len2, Adler-32 checksums were calculated for - each, adler1 and adler2. adler32_combine() returns the Adler-32 checksum of - seq1 and seq2 concatenated, requiring only adler1, adler2, and len2. Note - that the z_off_t type (like off_t) is a signed integer. If len2 is - negative, the result has no meaning or utility. -*/ - -ZEXTERN uint32_t ZEXPORT zng_crc32(uint32_t crc, const unsigned char *buf, uint32_t len); -/* - Update a running CRC-32 with the bytes buf[0..len-1] and return the - updated CRC-32. If buf is NULL, this function returns the required - initial value for the crc. Pre- and post-conditioning (one's complement) is - performed within this function so it shouldn't be done by the application. - - Usage example: - - uint32_t crc = crc32(0L, NULL, 0); - - while (read_buffer(buffer, length) != EOF) { - crc = crc32(crc, buffer, length); - } - if (crc != original_crc) error(); -*/ - -ZEXTERN uint32_t ZEXPORT zng_crc32_z (uint32_t crc, const unsigned char *buf, size_t len); -/* - Same as crc32(), but with a size_t length. -*/ - -/* -ZEXTERN uint32_t ZEXPORT zng_crc32_combine(uint32_t crc1, uint32_t crc2, z_off64_t len2); - - Combine two CRC-32 check values into one. For two sequences of bytes, - seq1 and seq2 with lengths len1 and len2, CRC-32 check values were - calculated for each, crc1 and crc2. crc32_combine() returns the CRC-32 - check value of seq1 and seq2 concatenated, requiring only crc1, crc2, and - len2. -*/ - -/* -ZEXTERN void ZEXPORT zng_crc32_combine_gen(uint32_t op[32], z_off_t len2); - - Generate the operator op corresponding to length len2, to be used with - crc32_combine_op(). op must have room for 32 uint32_t values. (32 is the - number of bits in the CRC.) -*/ - -ZEXTERN uint32_t ZEXPORT zng_crc32_combine_op(uint32_t crc1, uint32_t crc2, - const uint32_t *op); -/* - Give the same result as crc32_combine(), using op in place of len2. op is - is generated from len2 by crc32_combine_gen(). This will be faster than - crc32_combine() if the generated op is used many times. -*/ - - /* various hacks, don't look :) */ - -/* zng_deflateInit and zng_inflateInit are macros to allow checking the zlib version - * and the compiler's view of zng_stream: - */ -ZEXTERN int ZEXPORT zng_deflateInit_(zng_stream *strm, int level, const char *version, int stream_size); -ZEXTERN int ZEXPORT zng_inflateInit_(zng_stream *strm, const char *version, int stream_size); -ZEXTERN int ZEXPORT zng_deflateInit2_(zng_stream *strm, int level, int method, int windowBits, int memLevel, - int strategy, const char *version, int stream_size); -ZEXTERN int ZEXPORT zng_inflateInit2_(zng_stream *strm, int windowBits, const char *version, int stream_size); -ZEXTERN int ZEXPORT zng_inflateBackInit_(zng_stream *strm, int windowBits, unsigned char *window, - const char *version, int stream_size); -#define zng_deflateInit(strm, level) zng_deflateInit_((strm), (level), ZLIBNG_VERSION, (int)sizeof(zng_stream)) -#define zng_inflateInit(strm) zng_inflateInit_((strm), ZLIBNG_VERSION, (int)sizeof(zng_stream)) -#define zng_deflateInit2(strm, level, method, windowBits, memLevel, strategy) \ - zng_deflateInit2_((strm), (level), (method), (windowBits), (memLevel), \ - (strategy), ZLIBNG_VERSION, (int)sizeof(zng_stream)) -#define zng_inflateInit2(strm, windowBits) zng_inflateInit2_((strm), (windowBits), ZLIBNG_VERSION, (int)sizeof(zng_stream)) -#define zng_inflateBackInit(strm, windowBits, window) \ - zng_inflateBackInit_((strm), (windowBits), (window), ZLIBNG_VERSION, (int)sizeof(zng_stream)) - -#ifdef WITH_GZFILEOP - -/* gzgetc() macro and its supporting function and exposed data structure. Note - * that the real internal state is much larger than the exposed structure. - * This abbreviated structure exposes just enough for the gzgetc() macro. The - * user should not mess with these exposed elements, since their names or - * behavior could change in the future, perhaps even capriciously. They can - * only be used by the gzgetc() macro. You have been warned. - */ -struct gzFile_s { - unsigned have; - unsigned char *next; - z_off64_t pos; -}; -ZEXTERN int ZEXPORT zng_gzgetc_(gzFile file); /* backward compatibility */ -# define zng_gzgetc(g) ((g)->have ? ((g)->have--, (g)->pos++, *((g)->next)++) : (zng_gzgetc)(g)) - -/* provide 64-bit offset functions if _LARGEFILE64_SOURCE defined, and/or - * change the regular functions to 64 bits if _FILE_OFFSET_BITS is 64 (if - * both are true, the application gets the *64 functions, and the regular - * functions are changed to 64 bits) -- in case these are set on systems - * without large file support, _LFS64_LARGEFILE must also be true - */ -#ifdef Z_LARGE64 - ZEXTERN gzFile ZEXPORT zng_gzopen64(const char *, const char *); - ZEXTERN z_off64_t ZEXPORT zng_gzseek64(gzFile, z_off64_t, int); - ZEXTERN z_off64_t ZEXPORT zng_gztell64(gzFile); - ZEXTERN z_off64_t ZEXPORT zng_gzoffset64(gzFile); -#endif - -#if !defined(ZLIB_INTERNAL) && defined(Z_WANT64) -# define zng_gzopen zng_gzopen64 -# define zng_gzseek zng_gzseek64 -# define zng_gztell zng_gztell64 -# define zng_gzoffset zng_gzoffset64 -# ifndef Z_LARGE64 - ZEXTERN gzFile ZEXPORT zng_gzopen64(const char *, const char *); - ZEXTERN z_off_t ZEXPORT zng_gzseek64(gzFile, z_off_t, int); - ZEXTERN z_off_t ZEXPORT zng_gztell64(gzFile); - ZEXTERN z_off_t ZEXPORT zng_gzoffset64(gzFile); -# endif -#else - ZEXTERN gzFile ZEXPORT zng_gzopen(const char *, const char *); - ZEXTERN z_off_t ZEXPORT zng_gzseek(gzFile, z_off_t, int); - ZEXTERN z_off_t ZEXPORT zng_gztell(gzFile); - ZEXTERN z_off_t ZEXPORT zng_gzoffset(gzFile); -#endif -#endif /* WITH_GZFILEOP */ - - -/* provide 64-bit offset functions if _LARGEFILE64_SOURCE defined, and/or - * change the regular functions to 64 bits if _FILE_OFFSET_BITS is 64 (if - * both are true, the application gets the *64 functions, and the regular - * functions are changed to 64 bits) -- in case these are set on systems - * without large file support, _LFS64_LARGEFILE must also be true - */ -#ifdef Z_LARGE64 - ZEXTERN uint32_t ZEXPORT zng_adler32_combine64(uint32_t, uint32_t, z_off64_t); - ZEXTERN uint32_t ZEXPORT zng_crc32_combine64(uint32_t, uint32_t, z_off64_t); - ZEXTERN void ZEXPORT zng_crc32_combine_gen64(uint32_t *op, z_off64_t); -#endif - -#if !defined(ZLIB_INTERNAL) && defined(Z_WANT64) -# define zng_adler32_combine zng_adler32_combine64 -# define zng_crc32_combine zng_crc32_combine64 -# define zng_crc32_combine_gen zng_crc32_combine_gen64 -# ifndef Z_LARGE64 - ZEXTERN uint32_t ZEXPORT zng_adler32_combine64(uint32_t, uint32_t, z_off_t); - ZEXTERN uint32_t ZEXPORT zng_crc32_combine64(uint32_t, uint32_t, z_off_t); - ZEXTERN void ZEXPORT zng_crc32_combine_gen64(uint32_t *op, z_off64_t); -# endif -#else - ZEXTERN uint32_t ZEXPORT zng_adler32_combine(uint32_t, uint32_t, z_off_t); - ZEXTERN uint32_t ZEXPORT zng_crc32_combine(uint32_t, uint32_t, z_off_t); - ZEXTERN void ZEXPORT zng_crc32_combine_gen(uint32_t *op, z_off_t); -#endif - - -/* undocumented functions */ -ZEXTERN const char * ZEXPORT zng_zError (int); -ZEXTERN int ZEXPORT zng_inflateSyncPoint (zng_stream *); -ZEXTERN const uint32_t * ZEXPORT zng_get_crc_table (void); -ZEXTERN int ZEXPORT zng_inflateUndermine (zng_stream *, int); -ZEXTERN int ZEXPORT zng_inflateValidate (zng_stream *, int); -ZEXTERN unsigned long ZEXPORT zng_inflateCodesUsed (zng_stream *); -ZEXTERN int ZEXPORT zng_inflateResetKeep (zng_stream *); -ZEXTERN int ZEXPORT zng_deflateResetKeep (zng_stream *); - -#ifdef WITH_GZFILEOP -# if (defined(WIN32) || defined(__MINGW__)) - ZEXTERN gzFile ZEXPORT zng_gzopen_w(const wchar_t *path, const char *mode); -# endif -ZEXTERN int ZEXPORTVA zng_gzvprintf(gzFile file, const char *format, va_list va); -#endif - -#ifdef __cplusplus -} -#endif - -#endif /* ZNGLIB_H_ */ diff --git a/libs/zlibng/zlib-ng.map b/libs/zlibng/zlib-ng.map deleted file mode 100644 index 107d06958..000000000 --- a/libs/zlibng/zlib-ng.map +++ /dev/null @@ -1,107 +0,0 @@ -ZLIB_NG_1.9.9 { - global: - zng_adler32; - zng_adler32_c; - zng_adler32_combine; - zng_adler32_combine64; - zng_adler32_z; - zng_compress; - zng_compress2; - zng_compressBound; - zng_crc32; - zng_crc32_combine; - zng_crc32_combine64; - zng_crc32_combine_gen; - zng_crc32_combine_op; - zng_crc32_z; - zng_deflate; - zng_deflateBound; - zng_deflateCopy; - zng_deflateEnd; - zng_deflateGetDictionary; - zng_deflateInit_; - zng_deflateInit2_; - zng_deflateParams; - zng_deflatePending; - zng_deflatePrime; - zng_deflateReset; - zng_deflateResetKeep; - zng_deflateSetDictionary; - zng_deflateSetHeader; - zng_deflateTune; - zng_get_crc_table; - zng_inflate; - zng_inflateBack; - zng_inflateBackEnd; - zng_inflateBackInit_; - zng_inflateCodesUsed; - zng_inflateCopy; - zng_inflateEnd; - zng_inflateGetDictionary; - zng_inflateGetHeader; - zng_inflateInit_; - zng_inflateInit2_; - zng_inflateMark; - zng_inflatePrime; - zng_inflateReset; - zng_inflateReset2; - zng_inflateResetKeep; - zng_inflateSetDictionary; - zng_inflateSync; - zng_inflateSyncPoint; - zng_inflateUndermine; - zng_inflateValidate; - zng_uncompress; - zng_uncompress2; - zng_zError; - zng_zlibCompileFlags; - zng_zlibng_string; - zng_version; - local: - zng_deflate_copyright; - zng_inflate_copyright; - zng_inflate_fast; - zng_inflate_table; - zng_zcalloc; - zng_zcfree; - zng_z_errmsg; - zng_gz_error; - zng_gz_intmax; - _*; -}; - -ZLIB_NG_GZ_1.9.9 { - global: - zng_gzbuffer; - zng_gzclearerr; - zng_gzclose; - zng_gzclose_r; - zng_gzclose_w; - zng_gzdirect; - zng_gzdopen; - zng_gzeof; - zng_gzerror; - zng_gzflush; - zng_gzfread; - zng_gzfwrite; - zng_gzgetc; - zng_gzgetc_; - zng_gzgets; - zng_gzoffset; - zng_gzoffset64; - zng_gzopen; - zng_gzopen64; - zng_gzprintf; - zng_gzputc; - zng_gzputs; - zng_gzread; - zng_gzrewind; - zng_gzseek; - zng_gzseek64; - zng_gzsetparams; - zng_gztell; - zng_gztell64; - zng_gzungetc; - zng_gzvprintf; - zng_gzwrite; -}; diff --git a/libs/zlibng/zlib.3 b/libs/zlibng/zlib.3 deleted file mode 100644 index eddeec024..000000000 --- a/libs/zlibng/zlib.3 +++ /dev/null @@ -1,149 +0,0 @@ -.TH ZLIB 3 "15 Jan 2017" -.SH NAME -zlib \- compression/decompression library -.SH SYNOPSIS -[see -.I zlib.h -for full description] -.SH DESCRIPTION -The -.I zlib -library is a general purpose data compression library. -The code is thread safe, assuming that the standard library functions -used are thread safe, such as memory allocation routines. -It provides in-memory compression and decompression functions, -including integrity checks of the uncompressed data. -This version of the library supports only one compression method (deflation) -but other algorithms may be added later -with the same stream interface. -.LP -Compression can be done in a single step if the buffers are large enough -or can be done by repeated calls of the compression function. -In the latter case, -the application must provide more input and/or consume the output -(providing more output space) before each call. -.LP -The library also supports reading and writing files in -.IR gzip (1) -(.gz) format -with an interface similar to that of stdio. -.LP -The library does not install any signal handler. -The decoder checks the consistency of the compressed data, -so the library should never crash even in the case of corrupted input. -.LP -All functions of the compression library are documented in the file -.IR zlib.h . -The distribution source includes examples of use of the library -in the files -.I test/example.c -and -.IR test/minigzip.c, -as well as other examples in the -.IR examples/ -directory. -.LP -Changes to this version are documented in the file -.I ChangeLog -that accompanies the source. -.LP -.I zlib -is built in to many languages and operating systems, including but not limited to -Java, Python, .NET, PHP, Perl, Ruby, Swift, and Go. -.LP -An experimental package to read and write files in the .zip format, -written on top of -.I zlib -by Gilles Vollant (info@winimage.com), -is available at: -.IP -http://www.winimage.com/zLibDll/minizip.html -and also in the -.I contrib/minizip -directory of the main -.I zlib -source distribution. -.SH "SEE ALSO" -The -.I zlib -web site can be found at: -.IP -http://zlib.net/ -.LP -The data format used by the -.I zlib -library is described by RFC -(Request for Comments) 1950 to 1952 in the files: -.IP -http://tools.ietf.org/html/rfc1950 (for the zlib header and trailer format) -.br -http://tools.ietf.org/html/rfc1951 (for the deflate compressed data format) -.br -http://tools.ietf.org/html/rfc1952 (for the gzip header and trailer format) -.LP -Mark Nelson wrote an article about -.I zlib -for the Jan. 1997 issue of Dr. Dobb's Journal; -a copy of the article is available at: -.IP -http://marknelson.us/1997/01/01/zlib-engine/ -.SH "REPORTING PROBLEMS" -Before reporting a problem, -please check the -.I zlib -web site to verify that you have the latest version of -.IR zlib ; -otherwise, -obtain the latest version and see if the problem still exists. -Please read the -.I zlib -FAQ at: -.IP -http://zlib.net/zlib_faq.html -.LP -before asking for help. -Send questions and/or comments to zlib@gzip.org, -or (for the Windows DLL version) to Gilles Vollant (info@winimage.com). -.SH AUTHORS AND LICENSE -Version 1.2.11 -.LP -Copyright (C) 1995-2016 Jean-loup Gailly and Mark Adler -.LP -This software is provided 'as-is', without any express or implied -warranty. In no event will the authors be held liable for any damages -arising from the use of this software. -.LP -Permission is granted to anyone to use this software for any purpose, -including commercial applications, and to alter it and redistribute it -freely, subject to the following restrictions: -.LP -.nr step 1 1 -.IP \n[step]. 3 -The origin of this software must not be misrepresented; you must not -claim that you wrote the original software. If you use this software -in a product, an acknowledgment in the product documentation would be -appreciated but is not required. -.IP \n+[step]. -Altered source versions must be plainly marked as such, and must not be -misrepresented as being the original software. -.IP \n+[step]. -This notice may not be removed or altered from any source distribution. -.LP -Jean-loup Gailly Mark Adler -.br -jloup@gzip.org madler@alumni.caltech.edu -.LP -The deflate format used by -.I zlib -was defined by Phil Katz. -The deflate and -.I zlib -specifications were written by L. Peter Deutsch. -Thanks to all the people who reported problems and suggested various -improvements in -.IR zlib ; -who are too numerous to cite here. -.LP -UNIX manual page by R. P. C. 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zK`Ayh;Wx8)vNeY4wy}c)G?mX70%bH1s*`lWg3v~YB{ak?d}n)NHjp0$8_Qc;;>NmPjK=HUHD9WUq~^nutodH+5Jh@F%DAGGlB{DTKj z1^ZpT5GP}3?yM8^Z><18HA_!0R5t+7M~Cd85BxxrVpIV@Svxa(z+I{cG&w~QperaT zF3!y-CM7N<#v#Sa&IK( -#include -#include "zconf.h" - -#ifdef __cplusplus -extern "C" { -#endif - -#define ZLIBNG_VERSION "1.9.9" -#define ZLIBNG_VERNUM 0x1990 -#define ZLIBNG_VER_MAJOR 1 -#define ZLIBNG_VER_MINOR 9 -#define ZLIBNG_VER_REVISION 9 -#define ZLIBNG_VER_SUBREVISION 0 - -#define ZLIB_VERSION "1.2.11.zlib-ng" -#define ZLIB_VERNUM 0x12bf -#define ZLIB_VER_MAJOR 1 -#define ZLIB_VER_MINOR 2 -#define ZLIB_VER_REVISION 11 -#define ZLIB_VER_SUBREVISION 0 - -/* - The 'zlib' compression library provides in-memory compression and - decompression functions, including integrity checks of the uncompressed data. - This version of the library supports only one compression method (deflation) - but other algorithms will be added later and will have the same stream - interface. - - Compression can be done in a single step if the buffers are large enough, - or can be done by repeated calls of the compression function. In the latter - case, the application must provide more input and/or consume the output - (providing more output space) before each call. - - The compressed data format used by default by the in-memory functions is - the zlib format, which is a zlib wrapper documented in RFC 1950, wrapped - around a deflate stream, which is itself documented in RFC 1951. - - The library also supports reading and writing files in gzip (.gz) format - with an interface similar to that of stdio using the functions that start - with "gz". The gzip format is different from the zlib format. gzip is a - gzip wrapper, documented in RFC 1952, wrapped around a deflate stream. - - This library can optionally read and write gzip and raw deflate streams in - memory as well. - - The zlib format was designed to be compact and fast for use in memory - and on communications channels. The gzip format was designed for single- - file compression on file systems, has a larger header than zlib to maintain - directory information, and uses a different, slower check method than zlib. - - The library does not install any signal handler. The decoder checks - the consistency of the compressed data, so the library should never crash - even in the case of corrupted input. -*/ - -typedef void *(*alloc_func) (void *opaque, unsigned int items, unsigned int size); -typedef void (*free_func) (void *opaque, void *address); - -struct internal_state; - -typedef struct z_stream_s { - const unsigned char *next_in; /* next input byte */ - uint32_t avail_in; /* number of bytes available at next_in */ - size_t total_in; /* total number of input bytes read so far */ - - unsigned char *next_out; /* next output byte will go here */ - uint32_t avail_out; /* remaining free space at next_out */ - size_t total_out; /* total number of bytes output so far */ - - const char *msg; /* last error message, NULL if no error */ - struct internal_state *state; /* not visible by applications */ - - alloc_func zalloc; /* used to allocate the internal state */ - free_func zfree; /* used to free the internal state */ - void *opaque; /* private data object passed to zalloc and zfree */ - - int data_type; /* best guess about the data type: binary or text - for deflate, or the decoding state for inflate */ - unsigned long adler; /* Adler-32 or CRC-32 value of the uncompressed data */ - unsigned long reserved; /* reserved for future use */ -} z_stream; - -typedef z_stream *z_streamp; /* Obsolete type, retained for compatibility only */ - -/* - gzip header information passed to and from zlib routines. See RFC 1952 - for more details on the meanings of these fields. -*/ -typedef struct gz_header_s { - int text; /* true if compressed data believed to be text */ - unsigned long time; /* modification time */ - int xflags; /* extra flags (not used when writing a gzip file) */ - int os; /* operating system */ - unsigned char *extra; /* pointer to extra field or NULL if none */ - unsigned int extra_len; /* extra field length (valid if extra != NULL) */ - unsigned int extra_max; /* space at extra (only when reading header) */ - unsigned char *name; /* pointer to zero-terminated file name or NULL */ - unsigned int name_max; /* space at name (only when reading header) */ - unsigned char *comment; /* pointer to zero-terminated comment or NULL */ - unsigned int comm_max; /* space at comment (only when reading header) */ - int hcrc; /* true if there was or will be a header crc */ - int done; /* true when done reading gzip header (not used when writing a gzip file) */ -} gz_header; - -typedef gz_header *gz_headerp; - -/* - The application must update next_in and avail_in when avail_in has dropped - to zero. It must update next_out and avail_out when avail_out has dropped - to zero. The application must initialize zalloc, zfree and opaque before - calling the init function. All other fields are set by the compression - library and must not be updated by the application. - - The opaque value provided by the application will be passed as the first - parameter for calls of zalloc and zfree. This can be useful for custom - memory management. The compression library attaches no meaning to the - opaque value. - - zalloc must return NULL if there is not enough memory for the object. - If zlib is used in a multi-threaded application, zalloc and zfree must be - thread safe. In that case, zlib is thread-safe. When zalloc and zfree are - Z_NULL on entry to the initialization function, they are set to internal - routines that use the standard library functions malloc() and free(). - - The fields total_in and total_out can be used for statistics or progress - reports. After compression, total_in holds the total size of the - uncompressed data and may be saved for use by the decompressor (particularly - if the decompressor wants to decompress everything in a single step). -*/ - - /* constants */ - -#define Z_NO_FLUSH 0 -#define Z_PARTIAL_FLUSH 1 -#define Z_SYNC_FLUSH 2 -#define Z_FULL_FLUSH 3 -#define Z_FINISH 4 -#define Z_BLOCK 5 -#define Z_TREES 6 -/* Allowed flush values; see deflate() and inflate() below for details */ - -#define Z_OK 0 -#define Z_STREAM_END 1 -#define Z_NEED_DICT 2 -#define Z_ERRNO (-1) -#define Z_STREAM_ERROR (-2) -#define Z_DATA_ERROR (-3) -#define Z_MEM_ERROR (-4) -#define Z_BUF_ERROR (-5) -#define Z_VERSION_ERROR (-6) -/* Return codes for the compression/decompression functions. Negative values - * are errors, positive values are used for special but normal events. - */ - -#define Z_NO_COMPRESSION 0 -#define Z_BEST_SPEED 1 -#define Z_BEST_COMPRESSION 9 -#define Z_DEFAULT_COMPRESSION (-1) -/* compression levels */ - -#define Z_FILTERED 1 -#define Z_HUFFMAN_ONLY 2 -#define Z_RLE 3 -#define Z_FIXED 4 -#define Z_DEFAULT_STRATEGY 0 -/* compression strategy; see deflateInit2() below for details */ - -#define Z_BINARY 0 -#define Z_TEXT 1 -#define Z_ASCII Z_TEXT /* for compatibility with 1.2.2 and earlier */ -#define Z_UNKNOWN 2 -/* Possible values of the data_type field for deflate() */ - -#define Z_DEFLATED 8 -/* The deflate compression method (the only one supported in this version) */ - -#define Z_NULL NULL /* for compatibility with zlib, was for initializing zalloc, zfree, opaque */ - -#define zlib_version zlibVersion() -/* for compatibility with versions < 1.0.2 */ - - - /* basic functions */ - -ZEXTERN const char * ZEXPORT zlibVersion(void); -/* The application can compare zlibVersion and ZLIB_VERSION for consistency. - If the first character differs, the library code actually used is not - compatible with the zlib.h header file used by the application. This check - is automatically made by deflateInit and inflateInit. - */ - -/* -ZEXTERN int ZEXPORT deflateInit (z_stream *strm, int level); - - Initializes the internal stream state for compression. The fields - zalloc, zfree and opaque must be initialized before by the caller. If - zalloc and zfree are set to NULL, deflateInit updates them to use default - allocation functions. - - The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9: - 1 gives best speed, 9 gives best compression, 0 gives no compression at all - (the input data is simply copied a block at a time). Z_DEFAULT_COMPRESSION - requests a default compromise between speed and compression (currently - equivalent to level 6). - - deflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough - memory, Z_STREAM_ERROR if level is not a valid compression level, or - Z_VERSION_ERROR if the zlib library version (zlib_version) is incompatible - with the version assumed by the caller (ZLIB_VERSION). msg is set to null - if there is no error message. deflateInit does not perform any compression: - this will be done by deflate(). -*/ - - -ZEXTERN int ZEXPORT deflate(z_stream *strm, int flush); -/* - deflate compresses as much data as possible, and stops when the input - buffer becomes empty or the output buffer becomes full. It may introduce - some output latency (reading input without producing any output) except when - forced to flush. - - The detailed semantics are as follows. deflate performs one or both of the - following actions: - - - Compress more input starting at next_in and update next_in and avail_in - accordingly. If not all input can be processed (because there is not - enough room in the output buffer), next_in and avail_in are updated and - processing will resume at this point for the next call of deflate(). - - - Generate more output starting at next_out and update next_out and avail_out - accordingly. This action is forced if the parameter flush is non zero. - Forcing flush frequently degrades the compression ratio, so this parameter - should be set only when necessary. Some output may be provided even if - flush is zero. - - Before the call of deflate(), the application should ensure that at least - one of the actions is possible, by providing more input and/or consuming more - output, and updating avail_in or avail_out accordingly; avail_out should - never be zero before the call. The application can consume the compressed - output when it wants, for example when the output buffer is full (avail_out - == 0), or after each call of deflate(). If deflate returns Z_OK and with - zero avail_out, it must be called again after making room in the output - buffer because there might be more output pending. See deflatePending(), - which can be used if desired to determine whether or not there is more ouput - in that case. - - Normally the parameter flush is set to Z_NO_FLUSH, which allows deflate to - decide how much data to accumulate before producing output, in order to - maximize compression. - - If the parameter flush is set to Z_SYNC_FLUSH, all pending output is - flushed to the output buffer and the output is aligned on a byte boundary, so - that the decompressor can get all input data available so far. (In - particular avail_in is zero after the call if enough output space has been - provided before the call.) Flushing may degrade compression for some - compression algorithms and so it should be used only when necessary. This - completes the current deflate block and follows it with an empty stored block - that is three bits plus filler bits to the next byte, followed by four bytes - (00 00 ff ff). - - If flush is set to Z_PARTIAL_FLUSH, all pending output is flushed to the - output buffer, but the output is not aligned to a byte boundary. All of the - input data so far will be available to the decompressor, as for Z_SYNC_FLUSH. - This completes the current deflate block and follows it with an empty fixed - codes block that is 10 bits long. This assures that enough bytes are output - in order for the decompressor to finish the block before the empty fixed - codes block. - - If flush is set to Z_BLOCK, a deflate block is completed and emitted, as - for Z_SYNC_FLUSH, but the output is not aligned on a byte boundary, and up to - seven bits of the current block are held to be written as the next byte after - the next deflate block is completed. In this case, the decompressor may not - be provided enough bits at this point in order to complete decompression of - the data provided so far to the compressor. It may need to wait for the next - block to be emitted. This is for advanced applications that need to control - the emission of deflate blocks. - - If flush is set to Z_FULL_FLUSH, all output is flushed as with - Z_SYNC_FLUSH, and the compression state is reset so that decompression can - restart from this point if previous compressed data has been damaged or if - random access is desired. Using Z_FULL_FLUSH too often can seriously degrade - compression. - - If deflate returns with avail_out == 0, this function must be called again - with the same value of the flush parameter and more output space (updated - avail_out), until the flush is complete (deflate returns with non-zero - avail_out). In the case of a Z_FULL_FLUSH or Z_SYNC_FLUSH, make sure that - avail_out is greater than six to avoid repeated flush markers due to - avail_out == 0 on return. - - If the parameter flush is set to Z_FINISH, pending input is processed, - pending output is flushed and deflate returns with Z_STREAM_END if there was - enough output space. If deflate returns with Z_OK or Z_BUF_ERROR, this - function must be called again with Z_FINISH and more output space (updated - avail_out) but no more input data, until it returns with Z_STREAM_END or an - error. After deflate has returned Z_STREAM_END, the only possible operations - on the stream are deflateReset or deflateEnd. - - Z_FINISH can be used in the first deflate call after deflateInit if all the - compression is to be done in a single step. In order to complete in one - call, avail_out must be at least the value returned by deflateBound (see - below). Then deflate is guaranteed to return Z_STREAM_END. If not enough - output space is provided, deflate will not return Z_STREAM_END, and it must - be called again as described above. - - deflate() sets strm->adler to the Adler-32 checksum of all input read - so far (that is, total_in bytes). If a gzip stream is being generated, then - strm->adler will be the CRC-32 checksum of the input read so far. (See - deflateInit2 below.) - - deflate() may update strm->data_type if it can make a good guess about - the input data type (Z_BINARY or Z_TEXT). If in doubt, the data is - considered binary. This field is only for information purposes and does not - affect the compression algorithm in any manner. - - deflate() returns Z_OK if some progress has been made (more input - processed or more output produced), Z_STREAM_END if all input has been - consumed and all output has been produced (only when flush is set to - Z_FINISH), Z_STREAM_ERROR if the stream state was inconsistent (for example - if next_in or next_out was NULL) or the state was inadvertently written over - by the application), or Z_BUF_ERROR if no progress is possible (for example - avail_in or avail_out was zero). Note that Z_BUF_ERROR is not fatal, and - deflate() can be called again with more input and more output space to - continue compressing. -*/ - - -ZEXTERN int ZEXPORT deflateEnd(z_stream *strm); -/* - All dynamically allocated data structures for this stream are freed. - This function discards any unprocessed input and does not flush any pending - output. - - deflateEnd returns Z_OK if success, Z_STREAM_ERROR if the - stream state was inconsistent, Z_DATA_ERROR if the stream was freed - prematurely (some input or output was discarded). In the error case, msg - may be set but then points to a static string (which must not be - deallocated). -*/ - - -/* -ZEXTERN int ZEXPORT inflateInit (z_stream *strm); - - Initializes the internal stream state for decompression. The fields - next_in, avail_in, zalloc, zfree and opaque must be initialized before by - the caller. In the current version of inflate, the provided input is not - read or consumed. The allocation of a sliding window will be deferred to - the first call of inflate (if the decompression does not complete on the - first call). If zalloc and zfree are set to NULL, inflateInit updates - them to use default allocation functions. - - inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough - memory, Z_VERSION_ERROR if the zlib library version is incompatible with the - version assumed by the caller, or Z_STREAM_ERROR if the parameters are - invalid, such as a null pointer to the structure. msg is set to null if - there is no error message. inflateInit does not perform any decompression. - Actual decompression will be done by inflate(). So next_in, and avail_in, - next_out, and avail_out are unused and unchanged. The current - implementation of inflateInit() does not process any header information -- - that is deferred until inflate() is called. -*/ - - -ZEXTERN int ZEXPORT inflate(z_stream *strm, int flush); -/* - inflate decompresses as much data as possible, and stops when the input - buffer becomes empty or the output buffer becomes full. It may introduce - some output latency (reading input without producing any output) except when - forced to flush. - - The detailed semantics are as follows. inflate performs one or both of the - following actions: - - - Decompress more input starting at next_in and update next_in and avail_in - accordingly. If not all input can be processed (because there is not - enough room in the output buffer), then next_in and avail_in are updated - accordingly, and processing will resume at this point for the next call of - inflate(). - - - Generate more output starting at next_out and update next_out and avail_out - accordingly. inflate() provides as much output as possible, until there is - no more input data or no more space in the output buffer (see below about - the flush parameter). - - Before the call of inflate(), the application should ensure that at least - one of the actions is possible, by providing more input and/or consuming more - output, and updating the next_* and avail_* values accordingly. If the - caller of inflate() does not provide both available input and available - output space, it is possible that there will be no progress made. The - application can consume the uncompressed output when it wants, for example - when the output buffer is full (avail_out == 0), or after each call of - inflate(). If inflate returns Z_OK and with zero avail_out, it must be - called again after making room in the output buffer because there might be - more output pending. - - The flush parameter of inflate() can be Z_NO_FLUSH, Z_SYNC_FLUSH, Z_FINISH, - Z_BLOCK, or Z_TREES. Z_SYNC_FLUSH requests that inflate() flush as much - output as possible to the output buffer. Z_BLOCK requests that inflate() - stop if and when it gets to the next deflate block boundary. When decoding - the zlib or gzip format, this will cause inflate() to return immediately - after the header and before the first block. When doing a raw inflate, - inflate() will go ahead and process the first block, and will return when it - gets to the end of that block, or when it runs out of data. - - The Z_BLOCK option assists in appending to or combining deflate streams. - To assist in this, on return inflate() always sets strm->data_type to the - number of unused bits in the last byte taken from strm->next_in, plus 64 if - inflate() is currently decoding the last block in the deflate stream, plus - 128 if inflate() returned immediately after decoding an end-of-block code or - decoding the complete header up to just before the first byte of the deflate - stream. The end-of-block will not be indicated until all of the uncompressed - data from that block has been written to strm->next_out. The number of - unused bits may in general be greater than seven, except when bit 7 of - data_type is set, in which case the number of unused bits will be less than - eight. data_type is set as noted here every time inflate() returns for all - flush options, and so can be used to determine the amount of currently - consumed input in bits. - - The Z_TREES option behaves as Z_BLOCK does, but it also returns when the - end of each deflate block header is reached, before any actual data in that - block is decoded. This allows the caller to determine the length of the - deflate block header for later use in random access within a deflate block. - 256 is added to the value of strm->data_type when inflate() returns - immediately after reaching the end of the deflate block header. - - inflate() should normally be called until it returns Z_STREAM_END or an - error. However if all decompression is to be performed in a single step (a - single call of inflate), the parameter flush should be set to Z_FINISH. In - this case all pending input is processed and all pending output is flushed; - avail_out must be large enough to hold all of the uncompressed data for the - operation to complete. (The size of the uncompressed data may have been - saved by the compressor for this purpose.) The use of Z_FINISH is not - required to perform an inflation in one step. However it may be used to - inform inflate that a faster approach can be used for the single inflate() - call. Z_FINISH also informs inflate to not maintain a sliding window if the - stream completes, which reduces inflate's memory footprint. If the stream - does not complete, either because not all of the stream is provided or not - enough output space is provided, then a sliding window will be allocated and - inflate() can be called again to continue the operation as if Z_NO_FLUSH had - been used. - - In this implementation, inflate() always flushes as much output as - possible to the output buffer, and always uses the faster approach on the - first call. So the effects of the flush parameter in this implementation are - on the return value of inflate() as noted below, when inflate() returns early - when Z_BLOCK or Z_TREES is used, and when inflate() avoids the allocation of - memory for a sliding window when Z_FINISH is used. - - If a preset dictionary is needed after this call (see inflateSetDictionary - below), inflate sets strm->adler to the Adler-32 checksum of the dictionary - chosen by the compressor and returns Z_NEED_DICT; otherwise it sets - strm->adler to the Adler-32 checksum of all output produced so far (that is, - total_out bytes) and returns Z_OK, Z_STREAM_END or an error code as described - below. At the end of the stream, inflate() checks that its computed Adler-32 - checksum is equal to that saved by the compressor and returns Z_STREAM_END - only if the checksum is correct. - - inflate() can decompress and check either zlib-wrapped or gzip-wrapped - deflate data. The header type is detected automatically, if requested when - initializing with inflateInit2(). Any information contained in the gzip - header is not retained unless inflateGetHeader() is used. When processing - gzip-wrapped deflate data, strm->adler32 is set to the CRC-32 of the output - produced so far. The CRC-32 is checked against the gzip trailer, as is the - uncompressed length, modulo 2^32. - - inflate() returns Z_OK if some progress has been made (more input processed - or more output produced), Z_STREAM_END if the end of the compressed data has - been reached and all uncompressed output has been produced, Z_NEED_DICT if a - preset dictionary is needed at this point, Z_DATA_ERROR if the input data was - corrupted (input stream not conforming to the zlib format or incorrect check - value, in which case strm->msg points to a string with a more specific - error), Z_STREAM_ERROR if the stream structure was inconsistent (for example - next_in or next_out was NULL, or the state was inadvertently written over - by the application), Z_MEM_ERROR if there was not enough memory, Z_BUF_ERROR - if no progress is possible or if there was not enough room in the output - buffer when Z_FINISH is used. Note that Z_BUF_ERROR is not fatal, and - inflate() can be called again with more input and more output space to - continue decompressing. If Z_DATA_ERROR is returned, the application may - then call inflateSync() to look for a good compression block if a partial - recovery of the data is to be attempted. -*/ - - -ZEXTERN int ZEXPORT inflateEnd(z_stream *strm); -/* - All dynamically allocated data structures for this stream are freed. - This function discards any unprocessed input and does not flush any pending - output. - - inflateEnd returns Z_OK if success, or Z_STREAM_ERROR if the stream state - was inconsistent. -*/ - - - /* Advanced functions */ - -/* - The following functions are needed only in some special applications. -*/ - -/* -ZEXTERN int ZEXPORT deflateInit2 (z_stream *strm, - int level, - int method, - int windowBits, - int memLevel, - int strategy); - - This is another version of deflateInit with more compression options. The - fields zalloc, zfree and opaque must be initialized before by the caller. - - The method parameter is the compression method. It must be Z_DEFLATED in - this version of the library. - - The windowBits parameter is the base two logarithm of the window size - (the size of the history buffer). It should be in the range 8..15 for this - version of the library. Larger values of this parameter result in better - compression at the expense of memory usage. The default value is 15 if - deflateInit is used instead. - - For the current implementation of deflate(), a windowBits value of 8 (a - window size of 256 bytes) is not supported. As a result, a request for 8 - will result in 9 (a 512-byte window). In that case, providing 8 to - inflateInit2() will result in an error when the zlib header with 9 is - checked against the initialization of inflate(). The remedy is to not use 8 - with deflateInit2() with this initialization, or at least in that case use 9 - with inflateInit2(). - - windowBits can also be -8..-15 for raw deflate. In this case, -windowBits - determines the window size. deflate() will then generate raw deflate data - with no zlib header or trailer, and will not compute a check value. - - windowBits can also be greater than 15 for optional gzip encoding. Add - 16 to windowBits to write a simple gzip header and trailer around the - compressed data instead of a zlib wrapper. The gzip header will have no - file name, no extra data, no comment, no modification time (set to zero), no - header crc, and the operating system will be set to the appropriate value, - if the operating system was determined at compile time. If a gzip stream is - being written, strm->adler is a CRC-32 instead of an Adler-32. - - For raw deflate or gzip encoding, a request for a 256-byte window is - rejected as invalid, since only the zlib header provides a means of - transmitting the window size to the decompressor. - - The memLevel parameter specifies how much memory should be allocated - for the internal compression state. memLevel=1 uses minimum memory but is - slow and reduces compression ratio; memLevel=9 uses maximum memory for - optimal speed. The default value is 8. See zconf.h for total memory usage - as a function of windowBits and memLevel. - - The strategy parameter is used to tune the compression algorithm. Use the - value Z_DEFAULT_STRATEGY for normal data, Z_FILTERED for data produced by a - filter (or predictor), Z_HUFFMAN_ONLY to force Huffman encoding only (no - string match), or Z_RLE to limit match distances to one (run-length - encoding). Filtered data consists mostly of small values with a somewhat - random distribution. In this case, the compression algorithm is tuned to - compress them better. The effect of Z_FILTERED is to force more Huffman - coding and less string matching; it is somewhat intermediate between - Z_DEFAULT_STRATEGY and Z_HUFFMAN_ONLY. Z_RLE is designed to be almost as - fast as Z_HUFFMAN_ONLY, but give better compression for PNG image data. The - strategy parameter only affects the compression ratio but not the - correctness of the compressed output even if it is not set appropriately. - Z_FIXED prevents the use of dynamic Huffman codes, allowing for a simpler - decoder for special applications. - - deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough - memory, Z_STREAM_ERROR if any parameter is invalid (such as an invalid - method), or Z_VERSION_ERROR if the zlib library version (zlib_version) is - incompatible with the version assumed by the caller (ZLIB_VERSION). msg is - set to null if there is no error message. deflateInit2 does not perform any - compression: this will be done by deflate(). -*/ - -ZEXTERN int ZEXPORT deflateSetDictionary(z_stream *strm, - const unsigned char *dictionary, - unsigned int dictLength); -/* - Initializes the compression dictionary from the given byte sequence - without producing any compressed output. When using the zlib format, this - function must be called immediately after deflateInit, deflateInit2 or - deflateReset, and before any call of deflate. When doing raw deflate, this - function must be called either before any call of deflate, or immediately - after the completion of a deflate block, i.e. after all input has been - consumed and all output has been delivered when using any of the flush - options Z_BLOCK, Z_PARTIAL_FLUSH, Z_SYNC_FLUSH, or Z_FULL_FLUSH. The - compressor and decompressor must use exactly the same dictionary (see - inflateSetDictionary). - - The dictionary should consist of strings (byte sequences) that are likely - to be encountered later in the data to be compressed, with the most commonly - used strings preferably put towards the end of the dictionary. Using a - dictionary is most useful when the data to be compressed is short and can be - predicted with good accuracy; the data can then be compressed better than - with the default empty dictionary. - - Depending on the size of the compression data structures selected by - deflateInit or deflateInit2, a part of the dictionary may in effect be - discarded, for example if the dictionary is larger than the window size - provided in deflateInit or deflateInit2. Thus the strings most likely to be - useful should be put at the end of the dictionary, not at the front. In - addition, the current implementation of deflate will use at most the window - size minus 262 bytes of the provided dictionary. - - Upon return of this function, strm->adler is set to the Adler-32 value - of the dictionary; the decompressor may later use this value to determine - which dictionary has been used by the compressor. (The Adler-32 value - applies to the whole dictionary even if only a subset of the dictionary is - actually used by the compressor.) If a raw deflate was requested, then the - Adler-32 value is not computed and strm->adler is not set. - - deflateSetDictionary returns Z_OK if success, or Z_STREAM_ERROR if a - parameter is invalid (e.g. dictionary being NULL) or the stream state is - inconsistent (for example if deflate has already been called for this stream - or if not at a block boundary for raw deflate). deflateSetDictionary does - not perform any compression: this will be done by deflate(). -*/ - -ZEXTERN int ZEXPORT deflateGetDictionary (z_stream *strm, unsigned char *dictionary, unsigned int *dictLength); -/* - Returns the sliding dictionary being maintained by deflate. dictLength is - set to the number of bytes in the dictionary, and that many bytes are copied - to dictionary. dictionary must have enough space, where 32768 bytes is - always enough. If deflateGetDictionary() is called with dictionary equal to - Z_NULL, then only the dictionary length is returned, and nothing is copied. - Similary, if dictLength is Z_NULL, then it is not set. - - deflateGetDictionary() may return a length less than the window size, even - when more than the window size in input has been provided. It may return up - to 258 bytes less in that case, due to how zlib's implementation of deflate - manages the sliding window and lookahead for matches, where matches can be - up to 258 bytes long. If the application needs the last window-size bytes of - input, then that would need to be saved by the application outside of zlib. - - deflateGetDictionary returns Z_OK on success, or Z_STREAM_ERROR if the - stream state is inconsistent. -*/ - -ZEXTERN int ZEXPORT deflateCopy(z_stream *dest, z_stream *source); -/* - Sets the destination stream as a complete copy of the source stream. - - This function can be useful when several compression strategies will be - tried, for example when there are several ways of pre-processing the input - data with a filter. The streams that will be discarded should then be freed - by calling deflateEnd. Note that deflateCopy duplicates the internal - compression state which can be quite large, so this strategy is slow and can - consume lots of memory. - - deflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not - enough memory, Z_STREAM_ERROR if the source stream state was inconsistent - (such as zalloc being NULL). msg is left unchanged in both source and - destination. -*/ - -ZEXTERN int ZEXPORT deflateReset(z_stream *strm); -/* - This function is equivalent to deflateEnd followed by deflateInit, but - does not free and reallocate the internal compression state. The stream - will leave the compression level and any other attributes that may have been - set unchanged. - - deflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source - stream state was inconsistent (such as zalloc or state being NULL). -*/ - -ZEXTERN int ZEXPORT deflateParams(z_stream *strm, int level, int strategy); -/* - Dynamically update the compression level and compression strategy. The - interpretation of level and strategy is as in deflateInit2(). This can be - used to switch between compression and straight copy of the input data, or - to switch to a different kind of input data requiring a different strategy. - If the compression approach (which is a function of the level) or the - strategy is changed, and if there have been any deflate() calls since the - state was initialized or reset, then the input available so far is - compressed with the old level and strategy using deflate(strm, Z_BLOCK). - There are three approaches for the compression levels 0, 1..3, and 4..9 - respectively. The new level and strategy will take effect at the next call - of deflate(). - - If a deflate(strm, Z_BLOCK) is performed by deflateParams(), and it does - not have enough output space to complete, then the parameter change will not - take effect. In this case, deflateParams() can be called again with the - same parameters and more output space to try again. - - In order to assure a change in the parameters on the first try, the - deflate stream should be flushed using deflate() with Z_BLOCK or other flush - request until strm.avail_out is not zero, before calling deflateParams(). - Then no more input data should be provided before the deflateParams() call. - If this is done, the old level and strategy will be applied to the data - compressed before deflateParams(), and the new level and strategy will be - applied to the the data compressed after deflateParams(). - - deflateParams returns Z_OK on success, Z_STREAM_ERROR if the source stream - state was inconsistent or if a parameter was invalid, or Z_BUF_ERROR if - there was not enough output space to complete the compression of the - available input data before a change in the strategy or approach. Note that - in the case of a Z_BUF_ERROR, the parameters are not changed. A return - value of Z_BUF_ERROR is not fatal, in which case deflateParams() can be - retried with more output space. -*/ - -ZEXTERN int ZEXPORT deflateTune(z_stream *strm, int good_length, int max_lazy, int nice_length, int max_chain); -/* - Fine tune deflate's internal compression parameters. This should only be - used by someone who understands the algorithm used by zlib's deflate for - searching for the best matching string, and even then only by the most - fanatic optimizer trying to squeeze out the last compressed bit for their - specific input data. Read the deflate.c source code for the meaning of the - max_lazy, good_length, nice_length, and max_chain parameters. - - deflateTune() can be called after deflateInit() or deflateInit2(), and - returns Z_OK on success, or Z_STREAM_ERROR for an invalid deflate stream. - */ - -ZEXTERN unsigned long ZEXPORT deflateBound(z_stream *strm, unsigned long sourceLen); -/* - deflateBound() returns an upper bound on the compressed size after - deflation of sourceLen bytes. It must be called after deflateInit() or - deflateInit2(), and after deflateSetHeader(), if used. This would be used - to allocate an output buffer for deflation in a single pass, and so would be - called before deflate(). If that first deflate() call is provided the - sourceLen input bytes, an output buffer allocated to the size returned by - deflateBound(), and the flush value Z_FINISH, then deflate() is guaranteed - to return Z_STREAM_END. Note that it is possible for the compressed size to - be larger than the value returned by deflateBound() if flush options other - than Z_FINISH or Z_NO_FLUSH are used. -*/ - -ZEXTERN int ZEXPORT deflatePending(z_stream *strm, uint32_t *pending, int *bits); -/* - deflatePending() returns the number of bytes and bits of output that have - been generated, but not yet provided in the available output. The bytes not - provided would be due to the available output space having being consumed. - The number of bits of output not provided are between 0 and 7, where they - await more bits to join them in order to fill out a full byte. If pending - or bits are NULL, then those values are not set. - - deflatePending returns Z_OK if success, or Z_STREAM_ERROR if the source - stream state was inconsistent. - */ - -ZEXTERN int ZEXPORT deflatePrime(z_stream *strm, int bits, int value); -/* - deflatePrime() inserts bits in the deflate output stream. The intent - is that this function is used to start off the deflate output with the bits - leftover from a previous deflate stream when appending to it. As such, this - function can only be used for raw deflate, and must be used before the first - deflate() call after a deflateInit2() or deflateReset(). bits must be less - than or equal to 16, and that many of the least significant bits of value - will be inserted in the output. - - deflatePrime returns Z_OK if success, Z_BUF_ERROR if there was not enough - room in the internal buffer to insert the bits, or Z_STREAM_ERROR if the - source stream state was inconsistent. -*/ - -ZEXTERN int ZEXPORT deflateSetHeader(z_stream *strm, gz_headerp head); -/* - deflateSetHeader() provides gzip header information for when a gzip - stream is requested by deflateInit2(). deflateSetHeader() may be called - after deflateInit2() or deflateReset() and before the first call of - deflate(). The text, time, os, extra field, name, and comment information - in the provided gz_header structure are written to the gzip header (xflag is - ignored -- the extra flags are set according to the compression level). The - caller must assure that, if not NULL, name and comment are terminated with - a zero byte, and that if extra is not NULL, that extra_len bytes are - available there. If hcrc is true, a gzip header crc is included. Note that - the current versions of the command-line version of gzip (up through version - 1.3.x) do not support header crc's, and will report that it is a "multi-part - gzip file" and give up. - - If deflateSetHeader is not used, the default gzip header has text false, - the time set to zero, and os set to 255, with no extra, name, or comment - fields. The gzip header is returned to the default state by deflateReset(). - - deflateSetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source - stream state was inconsistent. -*/ - -/* -ZEXTERN int ZEXPORT inflateInit2(z_stream *strm, int windowBits); - - This is another version of inflateInit with an extra parameter. The - fields next_in, avail_in, zalloc, zfree and opaque must be initialized - before by the caller. - - The windowBits parameter is the base two logarithm of the maximum window - size (the size of the history buffer). It should be in the range 8..15 for - this version of the library. The default value is 15 if inflateInit is used - instead. windowBits must be greater than or equal to the windowBits value - provided to deflateInit2() while compressing, or it must be equal to 15 if - deflateInit2() was not used. If a compressed stream with a larger window - size is given as input, inflate() will return with the error code - Z_DATA_ERROR instead of trying to allocate a larger window. - - windowBits can also be zero to request that inflate use the window size in - the zlib header of the compressed stream. - - windowBits can also be -8..-15 for raw inflate. In this case, -windowBits - determines the window size. inflate() will then process raw deflate data, - not looking for a zlib or gzip header, not generating a check value, and not - looking for any check values for comparison at the end of the stream. This - is for use with other formats that use the deflate compressed data format - such as zip. Those formats provide their own check values. If a custom - format is developed using the raw deflate format for compressed data, it is - recommended that a check value such as an Adler-32 or a CRC-32 be applied to - the uncompressed data as is done in the zlib, gzip, and zip formats. For - most applications, the zlib format should be used as is. Note that comments - above on the use in deflateInit2() applies to the magnitude of windowBits. - - windowBits can also be greater than 15 for optional gzip decoding. Add - 32 to windowBits to enable zlib and gzip decoding with automatic header - detection, or add 16 to decode only the gzip format (the zlib format will - return a Z_DATA_ERROR). If a gzip stream is being decoded, strm->adler is a - CRC-32 instead of an Adler-32. Unlike the gunzip utility and gzread() (see - below), inflate() will *not* automatically decode concatenated gzip members. - inflate() will return Z_STREAM_END at the end of the gzip member. The state - would need to be reset to continue decoding a subsequent gzip member. This - *must* be done if there is more data after a gzip member, in order for the - decompression to be compliant with the gzip standard (RFC 1952). - - inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough - memory, Z_VERSION_ERROR if the zlib library version is incompatible with the - version assumed by the caller, or Z_STREAM_ERROR if the parameters are - invalid, such as a null pointer to the structure. msg is set to null if - there is no error message. inflateInit2 does not perform any decompression - apart from possibly reading the zlib header if present: actual decompression - will be done by inflate(). (So next_in and avail_in may be modified, but - next_out and avail_out are unused and unchanged.) The current implementation - of inflateInit2() does not process any header information -- that is - deferred until inflate() is called. -*/ - -ZEXTERN int ZEXPORT inflateSetDictionary(z_stream *strm, const unsigned char *dictionary, unsigned int dictLength); -/* - Initializes the decompression dictionary from the given uncompressed byte - sequence. This function must be called immediately after a call of inflate, - if that call returned Z_NEED_DICT. The dictionary chosen by the compressor - can be determined from the Adler-32 value returned by that call of inflate. - The compressor and decompressor must use exactly the same dictionary (see - deflateSetDictionary). For raw inflate, this function can be called at any - time to set the dictionary. If the provided dictionary is smaller than the - window and there is already data in the window, then the provided dictionary - will amend what's there. The application must insure that the dictionary - that was used for compression is provided. - - inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a - parameter is invalid (e.g. dictionary being NULL) or the stream state is - inconsistent, Z_DATA_ERROR if the given dictionary doesn't match the - expected one (incorrect Adler-32 value). inflateSetDictionary does not - perform any decompression: this will be done by subsequent calls of - inflate(). -*/ - -ZEXTERN int ZEXPORT inflateGetDictionary(z_stream *strm, unsigned char *dictionary, unsigned int *dictLength); -/* - Returns the sliding dictionary being maintained by inflate. dictLength is - set to the number of bytes in the dictionary, and that many bytes are copied - to dictionary. dictionary must have enough space, where 32768 bytes is - always enough. If inflateGetDictionary() is called with dictionary equal to - NULL, then only the dictionary length is returned, and nothing is copied. - Similary, if dictLength is NULL, then it is not set. - - inflateGetDictionary returns Z_OK on success, or Z_STREAM_ERROR if the - stream state is inconsistent. -*/ - -ZEXTERN int ZEXPORT inflateSync(z_stream *strm); -/* - Skips invalid compressed data until a possible full flush point (see above - for the description of deflate with Z_FULL_FLUSH) can be found, or until all - available input is skipped. No output is provided. - - inflateSync searches for a 00 00 FF FF pattern in the compressed data. - All full flush points have this pattern, but not all occurrences of this - pattern are full flush points. - - inflateSync returns Z_OK if a possible full flush point has been found, - Z_BUF_ERROR if no more input was provided, Z_DATA_ERROR if no flush point - has been found, or Z_STREAM_ERROR if the stream structure was inconsistent. - In the success case, the application may save the current current value of - total_in which indicates where valid compressed data was found. In the - error case, the application may repeatedly call inflateSync, providing more - input each time, until success or end of the input data. -*/ - -ZEXTERN int ZEXPORT inflateCopy(z_stream *dest, z_stream *source); -/* - Sets the destination stream as a complete copy of the source stream. - - This function can be useful when randomly accessing a large stream. The - first pass through the stream can periodically record the inflate state, - allowing restarting inflate at those points when randomly accessing the - stream. - - inflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not - enough memory, Z_STREAM_ERROR if the source stream state was inconsistent - (such as zalloc being NULL). msg is left unchanged in both source and - destination. -*/ - -ZEXTERN int ZEXPORT inflateReset(z_stream *strm); -/* - This function is equivalent to inflateEnd followed by inflateInit, - but does not free and reallocate the internal decompression state. The - stream will keep attributes that may have been set by inflateInit2. - - inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source - stream state was inconsistent (such as zalloc or state being NULL). -*/ - -ZEXTERN int ZEXPORT inflateReset2(z_stream *strm, int windowBits); -/* - This function is the same as inflateReset, but it also permits changing - the wrap and window size requests. The windowBits parameter is interpreted - the same as it is for inflateInit2. If the window size is changed, then the - memory allocated for the window is freed, and the window will be reallocated - by inflate() if needed. - - inflateReset2 returns Z_OK if success, or Z_STREAM_ERROR if the source - stream state was inconsistent (such as zalloc or state being NULL), or if - the windowBits parameter is invalid. -*/ - -ZEXTERN int ZEXPORT inflatePrime(z_stream *strm, int bits, int value); -/* - This function inserts bits in the inflate input stream. The intent is - that this function is used to start inflating at a bit position in the - middle of a byte. The provided bits will be used before any bytes are used - from next_in. This function should only be used with raw inflate, and - should be used before the first inflate() call after inflateInit2() or - inflateReset(). bits must be less than or equal to 16, and that many of the - least significant bits of value will be inserted in the input. - - If bits is negative, then the input stream bit buffer is emptied. Then - inflatePrime() can be called again to put bits in the buffer. This is used - to clear out bits leftover after feeding inflate a block description prior - to feeding inflate codes. - - inflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source - stream state was inconsistent. -*/ - -ZEXTERN long ZEXPORT inflateMark(z_stream *strm); -/* - This function returns two values, one in the lower 16 bits of the return - value, and the other in the remaining upper bits, obtained by shifting the - return value down 16 bits. If the upper value is -1 and the lower value is - zero, then inflate() is currently decoding information outside of a block. - If the upper value is -1 and the lower value is non-zero, then inflate is in - the middle of a stored block, with the lower value equaling the number of - bytes from the input remaining to copy. If the upper value is not -1, then - it is the number of bits back from the current bit position in the input of - the code (literal or length/distance pair) currently being processed. In - that case the lower value is the number of bytes already emitted for that - code. - - A code is being processed if inflate is waiting for more input to complete - decoding of the code, or if it has completed decoding but is waiting for - more output space to write the literal or match data. - - inflateMark() is used to mark locations in the input data for random - access, which may be at bit positions, and to note those cases where the - output of a code may span boundaries of random access blocks. The current - location in the input stream can be determined from avail_in and data_type - as noted in the description for the Z_BLOCK flush parameter for inflate. - - inflateMark returns the value noted above, or -65536 if the provided - source stream state was inconsistent. -*/ - -ZEXTERN int ZEXPORT inflateGetHeader(z_stream *strm, gz_headerp head); -/* - inflateGetHeader() requests that gzip header information be stored in the - provided gz_header structure. inflateGetHeader() may be called after - inflateInit2() or inflateReset(), and before the first call of inflate(). - As inflate() processes the gzip stream, head->done is zero until the header - is completed, at which time head->done is set to one. If a zlib stream is - being decoded, then head->done is set to -1 to indicate that there will be - no gzip header information forthcoming. Note that Z_BLOCK or Z_TREES can be - used to force inflate() to return immediately after header processing is - complete and before any actual data is decompressed. - - The text, time, xflags, and os fields are filled in with the gzip header - contents. hcrc is set to true if there is a header CRC. (The header CRC - was valid if done is set to one.) If extra is not NULL, then extra_max - contains the maximum number of bytes to write to extra. Once done is true, - extra_len contains the actual extra field length, and extra contains the - extra field, or that field truncated if extra_max is less than extra_len. - If name is not NULL, then up to name_max characters are written there, - terminated with a zero unless the length is greater than name_max. If - comment is not NULL, then up to comm_max characters are written there, - terminated with a zero unless the length is greater than comm_max. When any - of extra, name, or comment are not NULL and the respective field is not - present in the header, then that field is set to NULL to signal its - absence. This allows the use of deflateSetHeader() with the returned - structure to duplicate the header. However if those fields are set to - allocated memory, then the application will need to save those pointers - elsewhere so that they can be eventually freed. - - If inflateGetHeader is not used, then the header information is simply - discarded. The header is always checked for validity, including the header - CRC if present. inflateReset() will reset the process to discard the header - information. The application would need to call inflateGetHeader() again to - retrieve the header from the next gzip stream. - - inflateGetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source - stream state was inconsistent. -*/ - -/* -ZEXTERN int ZEXPORT inflateBackInit (z_stream *strm, int windowBits, unsigned char *window); - - Initialize the internal stream state for decompression using inflateBack() - calls. The fields zalloc, zfree and opaque in strm must be initialized - before the call. If zalloc and zfree are NULL, then the default library- - derived memory allocation routines are used. windowBits is the base two - logarithm of the window size, in the range 8..15. window is a caller - supplied buffer of that size. Except for special applications where it is - assured that deflate was used with small window sizes, windowBits must be 15 - and a 32K byte window must be supplied to be able to decompress general - deflate streams. - - See inflateBack() for the usage of these routines. - - inflateBackInit will return Z_OK on success, Z_STREAM_ERROR if any of - the parameters are invalid, Z_MEM_ERROR if the internal state could not be - allocated, or Z_VERSION_ERROR if the version of the library does not match - the version of the header file. -*/ - -typedef uint32_t (*in_func) (void *, const unsigned char * *); -typedef int (*out_func) (void *, unsigned char *, uint32_t); - -ZEXTERN int ZEXPORT inflateBack(z_stream *strm, in_func in, void *in_desc, out_func out, void *out_desc); -/* - inflateBack() does a raw inflate with a single call using a call-back - interface for input and output. This is potentially more efficient than - inflate() for file i/o applications, in that it avoids copying between the - output and the sliding window by simply making the window itself the output - buffer. inflate() can be faster on modern CPUs when used with large - buffers. inflateBack() trusts the application to not change the output - buffer passed by the output function, at least until inflateBack() returns. - - inflateBackInit() must be called first to allocate the internal state - and to initialize the state with the user-provided window buffer. - inflateBack() may then be used multiple times to inflate a complete, raw - deflate stream with each call. inflateBackEnd() is then called to free the - allocated state. - - A raw deflate stream is one with no zlib or gzip header or trailer. - This routine would normally be used in a utility that reads zip or gzip - files and writes out uncompressed files. The utility would decode the - header and process the trailer on its own, hence this routine expects only - the raw deflate stream to decompress. This is different from the default - behavior of inflate(), which expects a zlib header and trailer around the - deflate stream. - - inflateBack() uses two subroutines supplied by the caller that are then - called by inflateBack() for input and output. inflateBack() calls those - routines until it reads a complete deflate stream and writes out all of the - uncompressed data, or until it encounters an error. The function's - parameters and return types are defined above in the in_func and out_func - typedefs. inflateBack() will call in(in_desc, &buf) which should return the - number of bytes of provided input, and a pointer to that input in buf. If - there is no input available, in() must return zero -- buf is ignored in that - case -- and inflateBack() will return a buffer error. inflateBack() will - call out(out_desc, buf, len) to write the uncompressed data buf[0..len-1]. - out() should return zero on success, or non-zero on failure. If out() - returns non-zero, inflateBack() will return with an error. Neither in() nor - out() are permitted to change the contents of the window provided to - inflateBackInit(), which is also the buffer that out() uses to write from. - The length written by out() will be at most the window size. Any non-zero - amount of input may be provided by in(). - - For convenience, inflateBack() can be provided input on the first call by - setting strm->next_in and strm->avail_in. If that input is exhausted, then - in() will be called. Therefore strm->next_in must be initialized before - calling inflateBack(). If strm->next_in is NULL, then in() will be called - immediately for input. If strm->next_in is not NULL, then strm->avail_in - must also be initialized, and then if strm->avail_in is not zero, input will - initially be taken from strm->next_in[0 .. strm->avail_in - 1]. - - The in_desc and out_desc parameters of inflateBack() is passed as the - first parameter of in() and out() respectively when they are called. These - descriptors can be optionally used to pass any information that the caller- - supplied in() and out() functions need to do their job. - - On return, inflateBack() will set strm->next_in and strm->avail_in to - pass back any unused input that was provided by the last in() call. The - return values of inflateBack() can be Z_STREAM_END on success, Z_BUF_ERROR - if in() or out() returned an error, Z_DATA_ERROR if there was a format error - in the deflate stream (in which case strm->msg is set to indicate the nature - of the error), or Z_STREAM_ERROR if the stream was not properly initialized. - In the case of Z_BUF_ERROR, an input or output error can be distinguished - using strm->next_in which will be NULL only if in() returned an error. If - strm->next_in is not NULL, then the Z_BUF_ERROR was due to out() returning - non-zero. (in() will always be called before out(), so strm->next_in is - assured to be defined if out() returns non-zero.) Note that inflateBack() - cannot return Z_OK. -*/ - -ZEXTERN int ZEXPORT inflateBackEnd(z_stream *strm); -/* - All memory allocated by inflateBackInit() is freed. - - inflateBackEnd() returns Z_OK on success, or Z_STREAM_ERROR if the stream - state was inconsistent. -*/ - -ZEXTERN unsigned long ZEXPORT zlibCompileFlags(void); -/* Return flags indicating compile-time options. - - Type sizes, two bits each, 00 = 16 bits, 01 = 32, 10 = 64, 11 = other: - 1.0: size of unsigned int - 3.2: size of unsigned long - 5.4: size of void * (pointer) - 7.6: size of z_off_t - - Compiler, assembler, and debug options: - 8: ZLIB_DEBUG - 9: ASMV or ASMINF -- use ASM code - 10: ZLIB_WINAPI -- exported functions use the WINAPI calling convention - 11: 0 (reserved) - - One-time table building (smaller code, but not thread-safe if true): - 12: BUILDFIXED -- build static block decoding tables when needed - 13: DYNAMIC_CRC_TABLE -- build CRC calculation tables when needed - 14,15: 0 (reserved) - - Library content (indicates missing functionality): - 16: NO_GZCOMPRESS -- gz* functions cannot compress (to avoid linking - deflate code when not needed) - 17: NO_GZIP -- deflate can't write gzip streams, and inflate can't detect - and decode gzip streams (to avoid linking crc code) - 18-19: 0 (reserved) - - Operation variations (changes in library functionality): - 20: PKZIP_BUG_WORKAROUND -- slightly more permissive inflate - 21: FASTEST -- deflate algorithm with only one, lowest compression level - 22,23: 0 (reserved) - - The sprintf variant used by gzprintf (zero is best): - 24: 0 = vs*, 1 = s* -- 1 means limited to 20 arguments after the format - 25: 0 = *nprintf, 1 = *printf -- 1 means gzprintf() not secure! - 26: 0 = returns value, 1 = void -- 1 means inferred string length returned - - Remainder: - 27-31: 0 (reserved) - */ - - - /* utility functions */ - -/* - The following utility functions are implemented on top of the basic - stream-oriented functions. To simplify the interface, some default options - are assumed (compression level and memory usage, standard memory allocation - functions). The source code of these utility functions can be modified if - you need special options. -*/ - -ZEXTERN int ZEXPORT compress(unsigned char *dest, unsigned long *destLen, const unsigned char *source, unsigned long sourceLen); -/* - Compresses the source buffer into the destination buffer. sourceLen is - the byte length of the source buffer. Upon entry, destLen is the total size - of the destination buffer, which must be at least the value returned by - compressBound(sourceLen). Upon exit, destLen is the actual size of the - compressed data. compress() is equivalent to compress2() with a level - parameter of Z_DEFAULT_COMPRESSION. - - compress returns Z_OK if success, Z_MEM_ERROR if there was not - enough memory, Z_BUF_ERROR if there was not enough room in the output - buffer. -*/ - -ZEXTERN int ZEXPORT compress2(unsigned char *dest, unsigned long *destLen, const unsigned char *source, - unsigned long sourceLen, int level); -/* - Compresses the source buffer into the destination buffer. The level - parameter has the same meaning as in deflateInit. sourceLen is the byte - length of the source buffer. Upon entry, destLen is the total size of the - destination buffer, which must be at least the value returned by - compressBound(sourceLen). Upon exit, destLen is the actual size of the - compressed data. - - compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough - memory, Z_BUF_ERROR if there was not enough room in the output buffer, - Z_STREAM_ERROR if the level parameter is invalid. -*/ - -ZEXTERN unsigned long ZEXPORT compressBound(unsigned long sourceLen); -/* - compressBound() returns an upper bound on the compressed size after - compress() or compress2() on sourceLen bytes. It would be used before a - compress() or compress2() call to allocate the destination buffer. -*/ - -ZEXTERN int ZEXPORT uncompress(unsigned char *dest, unsigned long *destLen, const unsigned char *source, unsigned long sourceLen); -/* - Decompresses the source buffer into the destination buffer. sourceLen is - the byte length of the source buffer. Upon entry, destLen is the total size - of the destination buffer, which must be large enough to hold the entire - uncompressed data. (The size of the uncompressed data must have been saved - previously by the compressor and transmitted to the decompressor by some - mechanism outside the scope of this compression library.) Upon exit, destLen - is the actual size of the uncompressed data. - - uncompress returns Z_OK if success, Z_MEM_ERROR if there was not - enough memory, Z_BUF_ERROR if there was not enough room in the output - buffer, or Z_DATA_ERROR if the input data was corrupted or incomplete. In - the case where there is not enough room, uncompress() will fill the output - buffer with the uncompressed data up to that point. -*/ - - -ZEXTERN int ZEXPORT uncompress2 (unsigned char *dest, unsigned long *destLen, - const unsigned char *source, unsigned long *sourceLen); -/* - Same as uncompress, except that sourceLen is a pointer, where the - length of the source is *sourceLen. On return, *sourceLen is the number of - source bytes consumed. -*/ - - - /* gzip file access functions */ - -/* - This library supports reading and writing files in gzip (.gz) format with - an interface similar to that of stdio, using the functions that start with - "gz". The gzip format is different from the zlib format. gzip is a gzip - wrapper, documented in RFC 1952, wrapped around a deflate stream. -*/ - -typedef struct gzFile_s *gzFile; /* semi-opaque gzip file descriptor */ - -/* -ZEXTERN gzFile ZEXPORT gzopen(const char *path, const char *mode); - - Opens a gzip (.gz) file for reading or writing. The mode parameter is as - in fopen ("rb" or "wb") but can also include a compression level ("wb9") or - a strategy: 'f' for filtered data as in "wb6f", 'h' for Huffman-only - compression as in "wb1h", 'R' for run-length encoding as in "wb1R", or 'F' - for fixed code compression as in "wb9F". (See the description of - deflateInit2 for more information about the strategy parameter.) 'T' will - request transparent writing or appending with no compression and not using - the gzip format. - - "a" can be used instead of "w" to request that the gzip stream that will - be written be appended to the file. "+" will result in an error, since - reading and writing to the same gzip file is not supported. The addition of - "x" when writing will create the file exclusively, which fails if the file - already exists. On systems that support it, the addition of "e" when - reading or writing will set the flag to close the file on an execve() call. - - These functions, as well as gzip, will read and decode a sequence of gzip - streams in a file. The append function of gzopen() can be used to create - such a file. (Also see gzflush() for another way to do this.) When - appending, gzopen does not test whether the file begins with a gzip stream, - nor does it look for the end of the gzip streams to begin appending. gzopen - will simply append a gzip stream to the existing file. - - gzopen can be used to read a file which is not in gzip format; in this - case gzread will directly read from the file without decompression. When - reading, this will be detected automatically by looking for the magic two- - byte gzip header. - - gzopen returns NULL if the file could not be opened, if there was - insufficient memory to allocate the gzFile state, or if an invalid mode was - specified (an 'r', 'w', or 'a' was not provided, or '+' was provided). - errno can be checked to determine if the reason gzopen failed was that the - file could not be opened. -*/ - -ZEXTERN gzFile ZEXPORT gzdopen(int fd, const char *mode); -/* - gzdopen associates a gzFile with the file descriptor fd. File descriptors - are obtained from calls like open, dup, creat, pipe or fileno (if the file - has been previously opened with fopen). The mode parameter is as in gzopen. - - The next call of gzclose on the returned gzFile will also close the file - descriptor fd, just like fclose(fdopen(fd, mode)) closes the file descriptor - fd. If you want to keep fd open, use fd = dup(fd_keep); gz = gzdopen(fd, - mode);. The duplicated descriptor should be saved to avoid a leak, since - gzdopen does not close fd if it fails. If you are using fileno() to get the - file descriptor from a FILE *, then you will have to use dup() to avoid - double-close()ing the file descriptor. Both gzclose() and fclose() will - close the associated file descriptor, so they need to have different file - descriptors. - - gzdopen returns NULL if there was insufficient memory to allocate the - gzFile state, if an invalid mode was specified (an 'r', 'w', or 'a' was not - provided, or '+' was provided), or if fd is -1. The file descriptor is not - used until the next gz* read, write, seek, or close operation, so gzdopen - will not detect if fd is invalid (unless fd is -1). -*/ - -ZEXTERN int ZEXPORT gzbuffer(gzFile file, unsigned size); -/* - Set the internal buffer size used by this library's functions. The - default buffer size is 8192 bytes. This function must be called after - gzopen() or gzdopen(), and before any other calls that read or write the - file. The buffer memory allocation is always deferred to the first read or - write. Three times that size in buffer space is allocated. A larger buffer - size of, for example, 64K or 128K bytes will noticeably increase the speed - of decompression (reading). - - The new buffer size also affects the maximum length for gzprintf(). - - gzbuffer() returns 0 on success, or -1 on failure, such as being called - too late. -*/ - -ZEXTERN int ZEXPORT gzsetparams(gzFile file, int level, int strategy); -/* - Dynamically update the compression level or strategy. See the description - of deflateInit2 for the meaning of these parameters. Previously provided - data is flushed before the parameter change. - - gzsetparams returns Z_OK if success, Z_STREAM_ERROR if the file was not - opened for writing, Z_ERRNO if there is an error writing the flushed data, - or Z_MEM_ERROR if there is a memory allocation error. -*/ - -ZEXTERN int ZEXPORT gzread(gzFile file, void *buf, unsigned len); -/* - Reads the given number of uncompressed bytes from the compressed file. If - the input file is not in gzip format, gzread copies the given number of - bytes into the buffer directly from the file. - - After reaching the end of a gzip stream in the input, gzread will continue - to read, looking for another gzip stream. Any number of gzip streams may be - concatenated in the input file, and will all be decompressed by gzread(). - If something other than a gzip stream is encountered after a gzip stream, - that remaining trailing garbage is ignored (and no error is returned). - - gzread can be used to read a gzip file that is being concurrently written. - Upon reaching the end of the input, gzread will return with the available - data. If the error code returned by gzerror is Z_OK or Z_BUF_ERROR, then - gzclearerr can be used to clear the end of file indicator in order to permit - gzread to be tried again. Z_OK indicates that a gzip stream was completed - on the last gzread. Z_BUF_ERROR indicates that the input file ended in the - middle of a gzip stream. Note that gzread does not return -1 in the event - of an incomplete gzip stream. This error is deferred until gzclose(), which - will return Z_BUF_ERROR if the last gzread ended in the middle of a gzip - stream. Alternatively, gzerror can be used before gzclose to detect this - case. - - gzread returns the number of uncompressed bytes actually read, less than - len for end of file, or -1 for error. If len is too large to fit in an int, - then nothing is read, -1 is returned, and the error state is set to - Z_STREAM_ERROR. -*/ - -ZEXTERN size_t ZEXPORT gzfread (void *buf, size_t size, size_t nitems, gzFile file); -/* - Read up to nitems items of size size from file to buf, otherwise operating - as gzread() does. This duplicates the interface of stdio's fread(), with - size_t request and return types. - - gzfread() returns the number of full items read of size size, or zero if - the end of the file was reached and a full item could not be read, or if - there was an error. gzerror() must be consulted if zero is returned in - order to determine if there was an error. If the multiplication of size and - nitems overflows, i.e. the product does not fit in a size_t, then nothing - is read, zero is returned, and the error state is set to Z_STREAM_ERROR. - - In the event that the end of file is reached and only a partial item is - available at the end, i.e. the remaining uncompressed data length is not a - multiple of size, then the final partial item is nevertheless read into buf - and the end-of-file flag is set. The length of the partial item read is not - provided, but could be inferred from the result of gztell(). This behavior - is the same as the behavior of fread() implementations in common libraries, - but it prevents the direct use of gzfread() to read a concurrently written - file, reseting and retrying on end-of-file, when size is not 1. -*/ - -ZEXTERN int ZEXPORT gzwrite(gzFile file, void const *buf, unsigned len); -/* - Writes the given number of uncompressed bytes into the compressed file. - gzwrite returns the number of uncompressed bytes written or 0 in case of - error. -*/ - -ZEXTERN size_t ZEXPORT gzfwrite(void const *buf, size_t size, size_t nitems, gzFile file); -/* - gzfwrite() writes nitems items of size size from buf to file, duplicating - the interface of stdio's fwrite(), with size_t request and return types. - - gzfwrite() returns the number of full items written of size size, or zero - if there was an error. If the multiplication of size and nitems overflows, - i.e. the product does not fit in a size_t, then nothing is written, zero - is returned, and the error state is set to Z_STREAM_ERROR. -*/ - -ZEXTERN int ZEXPORTVA gzprintf(gzFile file, const char *format, ...); -/* - Converts, formats, and writes the arguments to the compressed file under - control of the format string, as in fprintf. gzprintf returns the number of - uncompressed bytes actually written, or a negative zlib error code in case - of error. The number of uncompressed bytes written is limited to 8191, or - one less than the buffer size given to gzbuffer(). The caller should assure - that this limit is not exceeded. If it is exceeded, then gzprintf() will - return an error (0) with nothing written. In this case, there may also be a - buffer overflow with unpredictable consequences, which is possible only if - zlib was compiled with the insecure functions sprintf() or vsprintf() - because the secure snprintf() or vsnprintf() functions were not available. - This can be determined using zlibCompileFlags(). -*/ - -ZEXTERN int ZEXPORT gzputs(gzFile file, const char *s); -/* - Writes the given null-terminated string to the compressed file, excluding - the terminating null character. - - gzputs returns the number of characters written, or -1 in case of error. -*/ - -ZEXTERN char * ZEXPORT gzgets(gzFile file, char *buf, int len); -/* - Reads bytes from the compressed file until len-1 characters are read, or a - newline character is read and transferred to buf, or an end-of-file - condition is encountered. If any characters are read or if len == 1, the - string is terminated with a null character. If no characters are read due - to an end-of-file or len < 1, then the buffer is left untouched. - - gzgets returns buf which is a null-terminated string, or it returns NULL - for end-of-file or in case of error. If there was an error, the contents at - buf are indeterminate. -*/ - -ZEXTERN int ZEXPORT gzputc(gzFile file, int c); -/* - Writes c, converted to an unsigned char, into the compressed file. gzputc - returns the value that was written, or -1 in case of error. -*/ - -ZEXTERN int ZEXPORT gzgetc(gzFile file); -/* - Reads one byte from the compressed file. gzgetc returns this byte or -1 - in case of end of file or error. This is implemented as a macro for speed. - As such, it does not do all of the checking the other functions do. I.e. - it does not check to see if file is NULL, nor whether the structure file - points to has been clobbered or not. -*/ - -ZEXTERN int ZEXPORT gzungetc(int c, gzFile file); -/* - Push one character back onto the stream to be read as the first character - on the next read. At least one character of push-back is allowed. - gzungetc() returns the character pushed, or -1 on failure. gzungetc() will - fail if c is -1, and may fail if a character has been pushed but not read - yet. If gzungetc is used immediately after gzopen or gzdopen, at least the - output buffer size of pushed characters is allowed. (See gzbuffer above.) - The pushed character will be discarded if the stream is repositioned with - gzseek() or gzrewind(). -*/ - -ZEXTERN int ZEXPORT gzflush(gzFile file, int flush); -/* - Flushes all pending output into the compressed file. The parameter flush - is as in the deflate() function. The return value is the zlib error number - (see function gzerror below). gzflush is only permitted when writing. - - If the flush parameter is Z_FINISH, the remaining data is written and the - gzip stream is completed in the output. If gzwrite() is called again, a new - gzip stream will be started in the output. gzread() is able to read such - concatenated gzip streams. - - gzflush should be called only when strictly necessary because it will - degrade compression if called too often. -*/ - -/* -ZEXTERN z_off_t ZEXPORT gzseek (gzFile file, z_off_t offset, int whence); - - Sets the starting position for the next gzread or gzwrite on the given - compressed file. The offset represents a number of bytes in the - uncompressed data stream. The whence parameter is defined as in lseek(2); - the value SEEK_END is not supported. - - If the file is opened for reading, this function is emulated but can be - extremely slow. If the file is opened for writing, only forward seeks are - supported; gzseek then compresses a sequence of zeroes up to the new - starting position. - - gzseek returns the resulting offset location as measured in bytes from - the beginning of the uncompressed stream, or -1 in case of error, in - particular if the file is opened for writing and the new starting position - would be before the current position. -*/ - -ZEXTERN int ZEXPORT gzrewind(gzFile file); -/* - Rewinds the given file. This function is supported only for reading. - - gzrewind(file) is equivalent to (int)gzseek(file, 0L, SEEK_SET) -*/ - -/* -ZEXTERN z_off_t ZEXPORT gztell(gzFile file); - - Returns the starting position for the next gzread or gzwrite on the given - compressed file. This position represents a number of bytes in the - uncompressed data stream, and is zero when starting, even if appending or - reading a gzip stream from the middle of a file using gzdopen(). - - gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR) -*/ - -/* -ZEXTERN z_off_t ZEXPORT gzoffset(gzFile file); - - Returns the current offset in the file being read or written. This offset - includes the count of bytes that precede the gzip stream, for example when - appending or when using gzdopen() for reading. When reading, the offset - does not include as yet unused buffered input. This information can be used - for a progress indicator. On error, gzoffset() returns -1. -*/ - -ZEXTERN int ZEXPORT gzeof(gzFile file); -/* - Returns true (1) if the end-of-file indicator has been set while reading, - false (0) otherwise. Note that the end-of-file indicator is set only if the - read tried to go past the end of the input, but came up short. Therefore, - just like feof(), gzeof() may return false even if there is no more data to - read, in the event that the last read request was for the exact number of - bytes remaining in the input file. This will happen if the input file size - is an exact multiple of the buffer size. - - If gzeof() returns true, then the read functions will return no more data, - unless the end-of-file indicator is reset by gzclearerr() and the input file - has grown since the previous end of file was detected. -*/ - -ZEXTERN int ZEXPORT gzdirect(gzFile file); -/* - Returns true (1) if file is being copied directly while reading, or false - (0) if file is a gzip stream being decompressed. - - If the input file is empty, gzdirect() will return true, since the input - does not contain a gzip stream. - - If gzdirect() is used immediately after gzopen() or gzdopen() it will - cause buffers to be allocated to allow reading the file to determine if it - is a gzip file. Therefore if gzbuffer() is used, it should be called before - gzdirect(). - - When writing, gzdirect() returns true (1) if transparent writing was - requested ("wT" for the gzopen() mode), or false (0) otherwise. (Note: - gzdirect() is not needed when writing. Transparent writing must be - explicitly requested, so the application already knows the answer. When - linking statically, using gzdirect() will include all of the zlib code for - gzip file reading and decompression, which may not be desired.) -*/ - -ZEXTERN int ZEXPORT gzclose(gzFile file); -/* - Flushes all pending output if necessary, closes the compressed file and - deallocates the (de)compression state. Note that once file is closed, you - cannot call gzerror with file, since its structures have been deallocated. - gzclose must not be called more than once on the same file, just as free - must not be called more than once on the same allocation. - - gzclose will return Z_STREAM_ERROR if file is not valid, Z_ERRNO on a - file operation error, Z_MEM_ERROR if out of memory, Z_BUF_ERROR if the - last read ended in the middle of a gzip stream, or Z_OK on success. -*/ - -ZEXTERN int ZEXPORT gzclose_r(gzFile file); -ZEXTERN int ZEXPORT gzclose_w(gzFile file); -/* - Same as gzclose(), but gzclose_r() is only for use when reading, and - gzclose_w() is only for use when writing or appending. The advantage to - using these instead of gzclose() is that they avoid linking in zlib - compression or decompression code that is not used when only reading or only - writing respectively. If gzclose() is used, then both compression and - decompression code will be included the application when linking to a static - zlib library. -*/ - -ZEXTERN const char * ZEXPORT gzerror(gzFile file, int *errnum); -/* - Returns the error message for the last error which occurred on the given - compressed file. errnum is set to zlib error number. If an error occurred - in the file system and not in the compression library, errnum is set to - Z_ERRNO and the application may consult errno to get the exact error code. - - The application must not modify the returned string. Future calls to - this function may invalidate the previously returned string. If file is - closed, then the string previously returned by gzerror will no longer be - available. - - gzerror() should be used to distinguish errors from end-of-file for those - functions above that do not distinguish those cases in their return values. -*/ - -ZEXTERN void ZEXPORT gzclearerr(gzFile file); -/* - Clears the error and end-of-file flags for file. This is analogous to the - clearerr() function in stdio. This is useful for continuing to read a gzip - file that is being written concurrently. -*/ - - - /* checksum functions */ - -/* - These functions are not related to compression but are exported - anyway because they might be useful in applications using the compression - library. -*/ - -ZEXTERN uint32_t ZEXPORT adler32(uint32_t adler, const unsigned char *buf, uint32_t len); -/* - Update a running Adler-32 checksum with the bytes buf[0..len-1] and - return the updated checksum. If buf is NULL, this function returns the - required initial value for the checksum. - - An Adler-32 checksum is almost as reliable as a CRC-32 but can be computed - much faster. - - Usage example: - - uint32_t adler = adler32(0L, NULL, 0); - - while (read_buffer(buffer, length) != EOF) { - adler = adler32(adler, buffer, length); - } - if (adler != original_adler) error(); -*/ - -ZEXTERN uint32_t ZEXPORT adler32_z (uint32_t adler, const unsigned char *buf, size_t len); -/* - Same as adler32(), but with a size_t length. -*/ - -/* -ZEXTERN uint32_t ZEXPORT adler32_combine(uint32_t adler1, uint32_t adler2, z_off_t len2); - - Combine two Adler-32 checksums into one. For two sequences of bytes, seq1 - and seq2 with lengths len1 and len2, Adler-32 checksums were calculated for - each, adler1 and adler2. adler32_combine() returns the Adler-32 checksum of - seq1 and seq2 concatenated, requiring only adler1, adler2, and len2. Note - that the z_off_t type (like off_t) is a signed integer. If len2 is - negative, the result has no meaning or utility. -*/ - -ZEXTERN uint32_t ZEXPORT crc32(uint32_t crc, const unsigned char *buf, uint32_t len); -/* - Update a running CRC-32 with the bytes buf[0..len-1] and return the - updated CRC-32. If buf is NULL, this function returns the required - initial value for the crc. Pre- and post-conditioning (one's complement) is - performed within this function so it shouldn't be done by the application. - - Usage example: - - uint32_t crc = crc32(0L, NULL, 0); - - while (read_buffer(buffer, length) != EOF) { - crc = crc32(crc, buffer, length); - } - if (crc != original_crc) error(); -*/ - -ZEXTERN uint32_t ZEXPORT crc32_z (uint32_t crc, const unsigned char *buf, size_t len); -/* - Same as crc32(), but with a size_t length. -*/ - -/* -ZEXTERN uint32_t ZEXPORT crc32_combine(uint32_t crc1, uint32_t crc2, z_off64_t len2); - - Combine two CRC-32 check values into one. For two sequences of bytes, - seq1 and seq2 with lengths len1 and len2, CRC-32 check values were - calculated for each, crc1 and crc2. crc32_combine() returns the CRC-32 - check value of seq1 and seq2 concatenated, requiring only crc1, crc2, and - len2. -*/ - -/* -ZEXTERN void ZEXPORT crc32_combine_gen(uint32_t op[32], z_off_t len2); - - Generate the operator op corresponding to length len2, to be used with - crc32_combine_op(). op must have room for 32 z_crc_t values. (32 is the - number of bits in the CRC.) -*/ - -ZEXTERN uint32_t ZEXPORT crc32_combine_op(uint32_t crc1, uint32_t crc2, - const uint32_t *op); -/* - Give the same result as crc32_combine(), using op in place of len2. op is - is generated from len2 by crc32_combine_gen(). This will be faster than - crc32_combine() if the generated op is used many times. -*/ - - - /* various hacks, don't look :) */ - -/* deflateInit and inflateInit are macros to allow checking the zlib version - * and the compiler's view of z_stream: - */ -ZEXTERN int ZEXPORT deflateInit_(z_stream *strm, int level, const char *version, int stream_size); -ZEXTERN int ZEXPORT inflateInit_(z_stream *strm, const char *version, int stream_size); -ZEXTERN int ZEXPORT deflateInit2_(z_stream *strm, int level, int method, int windowBits, int memLevel, - int strategy, const char *version, int stream_size); -ZEXTERN int ZEXPORT inflateInit2_(z_stream *strm, int windowBits, const char *version, int stream_size); -ZEXTERN int ZEXPORT inflateBackInit_(z_stream *strm, int windowBits, unsigned char *window, - const char *version, int stream_size); -#define deflateInit(strm, level) deflateInit_((strm), (level), ZLIB_VERSION, (int)sizeof(z_stream)) -#define inflateInit(strm) inflateInit_((strm), ZLIB_VERSION, (int)sizeof(z_stream)) -#define deflateInit2(strm, level, method, windowBits, memLevel, strategy) \ - deflateInit2_((strm), (level), (method), (windowBits), (memLevel), \ - (strategy), ZLIB_VERSION, (int)sizeof(z_stream)) -#define inflateInit2(strm, windowBits) inflateInit2_((strm), (windowBits), ZLIB_VERSION, (int)sizeof(z_stream)) -#define inflateBackInit(strm, windowBits, window) \ - inflateBackInit_((strm), (windowBits), (window), ZLIB_VERSION, (int)sizeof(z_stream)) - - -/* gzgetc() macro and its supporting function and exposed data structure. Note - * that the real internal state is much larger than the exposed structure. - * This abbreviated structure exposes just enough for the gzgetc() macro. The - * user should not mess with these exposed elements, since their names or - * behavior could change in the future, perhaps even capriciously. They can - * only be used by the gzgetc() macro. You have been warned. - */ -struct gzFile_s { - unsigned have; - unsigned char *next; - z_off64_t pos; -}; -ZEXTERN int ZEXPORT gzgetc_(gzFile file); /* backward compatibility */ -# define gzgetc(g) ((g)->have ? ((g)->have--, (g)->pos++, *((g)->next)++) : (gzgetc)(g)) - -/* provide 64-bit offset functions if _LARGEFILE64_SOURCE defined, and/or - * change the regular functions to 64 bits if _FILE_OFFSET_BITS is 64 (if - * both are true, the application gets the *64 functions, and the regular - * functions are changed to 64 bits) -- in case these are set on systems - * without large file support, _LFS64_LARGEFILE must also be true - */ -#ifdef Z_LARGE64 - ZEXTERN gzFile ZEXPORT gzopen64(const char *, const char *); - ZEXTERN z_off64_t ZEXPORT gzseek64(gzFile, z_off64_t, int); - ZEXTERN z_off64_t ZEXPORT gztell64(gzFile); - ZEXTERN z_off64_t ZEXPORT gzoffset64(gzFile); -#endif - -#if !defined(ZLIB_INTERNAL) && defined(Z_WANT64) -# define gzopen gzopen64 -# define gzseek gzseek64 -# define gztell gztell64 -# define gzoffset gzoffset64 -# ifndef Z_LARGE64 - ZEXTERN gzFile ZEXPORT gzopen64(const char *, const char *); - ZEXTERN z_off_t ZEXPORT gzseek64(gzFile, z_off_t, int); - ZEXTERN z_off_t ZEXPORT gztell64(gzFile); - ZEXTERN z_off_t ZEXPORT gzoffset64(gzFile); -# endif -#else - ZEXTERN gzFile ZEXPORT gzopen(const char *, const char *); - ZEXTERN z_off_t ZEXPORT gzseek(gzFile, z_off_t, int); - ZEXTERN z_off_t ZEXPORT gztell(gzFile); - ZEXTERN z_off_t ZEXPORT gzoffset(gzFile); -#endif - - -/* provide 64-bit offset functions if _LARGEFILE64_SOURCE defined, and/or - * change the regular functions to 64 bits if _FILE_OFFSET_BITS is 64 (if - * both are true, the application gets the *64 functions, and the regular - * functions are changed to 64 bits) -- in case these are set on systems - * without large file support, _LFS64_LARGEFILE must also be true - */ -#ifdef Z_LARGE64 - ZEXTERN uint32_t ZEXPORT adler32_combine64(uint32_t, uint32_t, z_off64_t); - ZEXTERN uint32_t ZEXPORT crc32_combine64(uint32_t, uint32_t, z_off64_t); - ZEXTERN void ZEXPORT crc32_combine_gen64(uint32_t *op, z_off64_t); -#endif - -#if !defined(ZLIB_INTERNAL) && defined(Z_WANT64) -# define adler32_combine adler32_combine64 -# define crc32_combine crc32_combine64 -# define crc32_combine_gen crc32_combine_gen64 -# ifndef Z_LARGE64 - ZEXTERN uint32_t ZEXPORT adler32_combine64(uint32_t, uint32_t, z_off_t); - ZEXTERN uint32_t ZEXPORT crc32_combine64(uint32_t, uint32_t, z_off_t); - ZEXTERN void ZEXPORT crc32_combine_gen64(uint32_t *op, z_off64_t); -# endif -#else - ZEXTERN uint32_t ZEXPORT adler32_combine(uint32_t, uint32_t, z_off_t); - ZEXTERN uint32_t ZEXPORT crc32_combine(uint32_t, uint32_t, z_off_t); - ZEXTERN void ZEXPORT crc32_combine_gen(uint32_t *op, z_off_t); -#endif - - -/* undocumented functions */ -ZEXTERN const char * ZEXPORT zError (int); -ZEXTERN int ZEXPORT inflateSyncPoint (z_stream *); -ZEXTERN const uint32_t * ZEXPORT get_crc_table (void); -ZEXTERN int ZEXPORT inflateUndermine (z_stream *, int); -ZEXTERN int ZEXPORT inflateValidate (z_stream *, int); -ZEXTERN unsigned long ZEXPORT inflateCodesUsed (z_stream *); -ZEXTERN int ZEXPORT inflateResetKeep (z_stream *); -ZEXTERN int ZEXPORT deflateResetKeep (z_stream *); - -#if (defined(WIN32) || defined(__MINGW__)) - ZEXTERN gzFile ZEXPORT gzopen_w(const wchar_t *path, const char *mode); -#endif -ZEXTERN int ZEXPORTVA gzvprintf(gzFile file, const char *format, va_list va); - -#ifdef __cplusplus -} -#endif - -#endif /* ZLIB_H_ */ diff --git a/libs/zlibng/zlib.map b/libs/zlibng/zlib.map deleted file mode 100644 index 28436d47e..000000000 --- a/libs/zlibng/zlib.map +++ /dev/null @@ -1,96 +0,0 @@ -ZLIB_1.2.0 { - global: - compressBound; - deflateBound; - inflateBack; - inflateBackEnd; - inflateBackInit_; - inflateCopy; - local: - deflate_copyright; - inflate_copyright; - inflate_fast; - inflate_table; - zcalloc; - zcfree; - z_errmsg; - gz_error; - gz_intmax; - _*; -}; - -ZLIB_1.2.0.2 { - gzclearerr; - gzungetc; - zlibCompileFlags; -} ZLIB_1.2.0; - -ZLIB_1.2.0.8 { - deflatePrime; -} ZLIB_1.2.0.2; - -ZLIB_1.2.2 { - adler32_combine; - crc32_combine; - deflateSetHeader; - inflateGetHeader; -} ZLIB_1.2.0.8; - -ZLIB_1.2.2.3 { - deflateTune; - gzdirect; -} ZLIB_1.2.2; - -ZLIB_1.2.2.4 { - inflatePrime; -} ZLIB_1.2.2.3; - -ZLIB_1.2.3.3 { - adler32_combine64; - crc32_combine64; - gzopen64; - gzseek64; - gztell64; - inflateUndermine; -} ZLIB_1.2.2.4; - -ZLIB_1.2.3.4 { - inflateReset2; - inflateMark; -} ZLIB_1.2.3.3; - -ZLIB_1.2.3.5 { - gzbuffer; - gzoffset; - gzoffset64; - gzclose_r; - gzclose_w; -} ZLIB_1.2.3.4; - -ZLIB_1.2.5.1 { - deflatePending; -} ZLIB_1.2.3.5; - -ZLIB_1.2.5.2 { - deflateResetKeep; - gzgetc_; - inflateResetKeep; -} ZLIB_1.2.5.1; - -ZLIB_1.2.7.1 { - inflateGetDictionary; - gzvprintf; -} ZLIB_1.2.5.2; - -ZLIB_1.2.9 { - inflateCodesUsed; - inflateValidate; - uncompress2; - gzfread; - gzfwrite; - deflateGetDictionary; - adler32_z; - crc32_z; - crc32_combine_gen; - crc32_combine_op; -} ZLIB_1.2.7.1; diff --git a/libs/zlibng/zlib.pc.cmakein b/libs/zlibng/zlib.pc.cmakein deleted file mode 100644 index 0635b6e35..000000000 --- a/libs/zlibng/zlib.pc.cmakein +++ /dev/null @@ -1,13 +0,0 @@ -prefix=@CMAKE_INSTALL_PREFIX@ -exec_prefix=@CMAKE_INSTALL_PREFIX@ -libdir=@INSTALL_LIB_DIR@ -sharedlibdir=@INSTALL_LIB_DIR@ -includedir=@INSTALL_INC_DIR@ - -Name: zlib@SUFFIX@ -Description: zlib-ng compression library -Version: @zlib_VERSION@ - -Requires: -Libs: -L${libdir} -L${sharedlibdir} -lz@SUFFIX@ -Cflags: -I${includedir} diff --git a/libs/zlibng/zlib.pc.in b/libs/zlibng/zlib.pc.in deleted file mode 100644 index d0a6766b5..000000000 --- a/libs/zlibng/zlib.pc.in +++ /dev/null @@ -1,13 +0,0 @@ -prefix=@prefix@ -exec_prefix=@exec_prefix@ -libdir=@libdir@ -sharedlibdir=@sharedlibdir@ -includedir=@includedir@ - -Name: zlib@SUFFIX@ -Description: zlib-ng compression library -Version: @VERSION@ - -Requires: -Libs: -L${libdir} -L${sharedlibdir} -lz@SUFFIX@ -Cflags: -I${includedir} diff --git a/libs/zlibng/zutil.c b/libs/zlibng/zutil.c deleted file mode 100644 index 4373586bd..000000000 --- a/libs/zlibng/zutil.c +++ /dev/null @@ -1,140 +0,0 @@ -/* zutil.c -- target dependent utility functions for the compression library - * Copyright (C) 1995-2017 Jean-loup Gailly - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* @(#) $Id$ */ - -#include "zbuild.h" -#include "zutil.h" -#ifdef WITH_GZFILEOP -# include "gzguts.h" -#endif -#ifndef UNALIGNED_OK -# include "malloc.h" -#endif - -const char * const z_errmsg[10] = { - (const char *)"need dictionary", /* Z_NEED_DICT 2 */ - (const char *)"stream end", /* Z_STREAM_END 1 */ - (const char *)"", /* Z_OK 0 */ - (const char *)"file error", /* Z_ERRNO (-1) */ - (const char *)"stream error", /* Z_STREAM_ERROR (-2) */ - (const char *)"data error", /* Z_DATA_ERROR (-3) */ - (const char *)"insufficient memory", /* Z_MEM_ERROR (-4) */ - (const char *)"buffer error", /* Z_BUF_ERROR (-5) */ - (const char *)"incompatible version",/* Z_VERSION_ERROR (-6) */ - (const char *)"" -}; - -const char zlibng_string[] = - " zlib-ng 1.9.9 forked from zlib 1.2.11 "; - -#ifdef ZLIB_COMPAT -const char * ZEXPORT zlibVersion(void) -{ - return ZLIB_VERSION; -} -#endif - -const char * ZEXPORT zlibng_version(void) -{ - return ZLIBNG_VERSION; -} - -unsigned long ZEXPORT PREFIX(zlibCompileFlags)(void) -{ - unsigned long flags; - - flags = 0; - switch ((int)(sizeof(unsigned int))) { - case 2: break; - case 4: flags += 1; break; - case 8: flags += 2; break; - default: flags += 3; - } - switch ((int)(sizeof(unsigned long))) { - case 2: break; - case 4: flags += 1 << 2; break; - case 8: flags += 2 << 2; break; - default: flags += 3 << 2; - } - switch ((int)(sizeof(void *))) { - case 2: break; - case 4: flags += 1 << 4; break; - case 8: flags += 2 << 4; break; - default: flags += 3 << 4; - } - switch ((int)(sizeof(z_off_t))) { - case 2: break; - case 4: flags += 1 << 6; break; - case 8: flags += 2 << 6; break; - default: flags += 3 << 6; - } -#ifdef ZLIB_DEBUG - flags += 1 << 8; -#endif -#ifdef ZLIB_WINAPI - flags += 1 << 10; -#endif -#ifdef BUILDFIXED - flags += 1 << 12; -#endif -#ifdef DYNAMIC_CRC_TABLE - flags += 1 << 13; -#endif -#ifdef NO_GZCOMPRESS - flags += 1L << 16; -#endif -#ifdef NO_GZIP - flags += 1L << 17; -#endif -#ifdef PKZIP_BUG_WORKAROUND - flags += 1L << 20; -#endif - return flags; -} - -#ifdef ZLIB_DEBUG -#include -# ifndef verbose -# define verbose 0 -# endif -int ZLIB_INTERNAL z_verbose = verbose; - -void ZLIB_INTERNAL z_error (m) - char *m; -{ - fprintf(stderr, "%s\n", m); - exit(1); -} -#endif - -/* exported to allow conversion of error code to string for compress() and - * uncompress() - */ -const char * ZEXPORT PREFIX(zError)(int err) -{ - return ERR_MSG(err); -} - -#ifndef MY_ZCALLOC /* Any system without a special alloc function */ - -void ZLIB_INTERNAL *zcalloc (void *opaque, unsigned items, unsigned size) -{ - (void)opaque; -#ifndef UNALIGNED_OK - return memalign(16, items * size); -#else - return sizeof(unsigned int) > 2 ? (void *)malloc(items * size) : - (void *)calloc(items, size); -#endif -} - -void ZLIB_INTERNAL zcfree (void *opaque, void *ptr) -{ - (void)opaque; - free(ptr); -} - -#endif /* MY_ZCALLOC */ diff --git a/libs/zlibng/zutil.h b/libs/zlibng/zutil.h deleted file mode 100644 index 8d8ae92ee..000000000 --- a/libs/zlibng/zutil.h +++ /dev/null @@ -1,247 +0,0 @@ -#ifndef ZUTIL_H_ -#define ZUTIL_H_ -/* zutil.h -- internal interface and configuration of the compression library - * Copyright (C) 1995-2016 Jean-loup Gailly, Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* WARNING: this file should *not* be used by applications. It is - part of the implementation of the compression library and is - subject to change. Applications should only use zlib.h. - */ - -/* @(#) $Id$ */ - -#if defined(HAVE_INTERNAL) -# define ZLIB_INTERNAL __attribute__((visibility ("internal"))) -#elif defined(HAVE_HIDDEN) -# define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) -#else -# define ZLIB_INTERNAL -#endif - -#include -#include -#include -#include -#ifdef ZLIB_COMPAT -# include "zlib.h" -#else -# include "zlib-ng.h" -#endif - -typedef unsigned char uch; /* Included for compatibility with external code only */ -typedef uint16_t ush; /* Included for compatibility with external code only */ -typedef unsigned long ulg; - -extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ -/* (size given to avoid silly warnings with Visual C++) */ - -#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] - -#define ERR_RETURN(strm, err) return (strm->msg = ERR_MSG(err), (err)) -/* To be used only when the state is known to be valid */ - - /* common constants */ - -#ifndef DEF_WBITS -# define DEF_WBITS MAX_WBITS -#endif -/* default windowBits for decompression. MAX_WBITS is for compression only */ - -#if MAX_MEM_LEVEL >= 8 -# define DEF_MEM_LEVEL 8 -#else -# define DEF_MEM_LEVEL MAX_MEM_LEVEL -#endif -/* default memLevel */ - -#define STORED_BLOCK 0 -#define STATIC_TREES 1 -#define DYN_TREES 2 -/* The three kinds of block type */ - -#define MIN_MATCH 3 -#define MAX_MATCH 258 -/* The minimum and maximum match lengths */ - -#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ - - /* target dependencies */ - -#ifdef AMIGA -# define OS_CODE 1 -#endif - -#ifdef __370__ -# if __TARGET_LIB__ < 0x20000000 -# define OS_CODE 4 -# elif __TARGET_LIB__ < 0x40000000 -# define OS_CODE 11 -# else -# define OS_CODE 8 -# endif -#endif - -#if defined(ATARI) || defined(atarist) -# define OS_CODE 5 -#endif - -#ifdef OS2 -# define OS_CODE 6 -# if defined(M_I86) && !defined(Z_SOLO) -# include -# endif -#endif - -#if defined(MACOS) || defined(TARGET_OS_MAC) -# define OS_CODE 7 -#endif - -#ifdef __acorn -# define OS_CODE 13 -#endif - -#if defined(WIN32) && !defined(__CYGWIN__) -# define OS_CODE 10 -#endif - -#ifdef __APPLE__ -# define OS_CODE 19 -#endif - -#if (defined(_MSC_VER) && (_MSC_VER > 600)) -# define fdopen(fd, type) _fdopen(fd, type) -#endif - -/* provide prototypes for these when building zlib without LFS */ -#if !defined(WIN32) && !defined(__MSYS__) && (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) -# include "zbuild.h" /* For PREFIX() */ - ZEXTERN uint32_t ZEXPORT PREFIX(adler32_combine64)(uint32_t, uint32_t, z_off_t); - ZEXTERN uint32_t ZEXPORT PREFIX(crc32_combine64)(uint32_t, uint32_t, z_off_t); -#endif - -/* MS Visual Studio does not allow inline in C, only C++. - But it provides __inline instead, so use that. */ -#if defined(_MSC_VER) && !defined(inline) -# define inline __inline -#endif - - /* common defaults */ - -#ifndef OS_CODE -# define OS_CODE 3 /* assume Unix */ -#endif - -#ifndef F_OPEN -# define F_OPEN(name, mode) fopen((name), (mode)) -#endif - - /* functions */ - -/* Diagnostic functions */ -#ifdef ZLIB_DEBUG -# include - extern int ZLIB_INTERNAL z_verbose; - extern void ZLIB_INTERNAL z_error(char *m); -# define Assert(cond, msg) {if(!(cond)) z_error(msg);} -# define Trace(x) {if (z_verbose >= 0) fprintf x;} -# define Tracev(x) {if (z_verbose > 0) fprintf x;} -# define Tracevv(x) {if (z_verbose > 1) fprintf x;} -# define Tracec(c, x) {if (z_verbose > 0 && (c)) fprintf x;} -# define Tracecv(c, x) {if (z_verbose > 1 && (c)) fprintf x;} -#else -# define Assert(cond, msg) -# define Trace(x) -# define Tracev(x) -# define Tracevv(x) -# define Tracec(c, x) -# define Tracecv(c, x) -#endif - -void ZLIB_INTERNAL *zcalloc(void *opaque, unsigned items, unsigned size); -void ZLIB_INTERNAL zcfree(void *opaque, void *ptr); - -#define ZALLOC(strm, items, size) (*((strm)->zalloc))((strm)->opaque, (items), (size)) -#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (void *)(addr)) -#define TRY_FREE(s, p) {if (p) ZFREE(s, p);} - -/* Reverse the bytes in a value. Use compiler intrinsics when - possible to take advantage of hardware implementations. */ -#if defined(WIN32) && (_MSC_VER >= 1300) -# pragma intrinsic(_byteswap_ulong) -# define ZSWAP16(q) _byteswap_ushort(q) -# define ZSWAP32(q) _byteswap_ulong(q) -# define ZSWAP64(q) _byteswap_uint64(q) - -#elif defined(__Clang__) || (defined(__GNUC__) && \ - (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 2))) -# define ZSWAP16(q) __builtin_bswap16(q) -# define ZSWAP32(q) __builtin_bswap32(q) -# define ZSWAP64(q) __builtin_bswap64(q) - -#elif defined(__GNUC__) && (__GNUC__ >= 2) && defined(__linux__) -# include -# define ZSWAP16(q) bswap_16(q) -# define ZSWAP32(q) bswap_32(q) -# define ZSWAP64(q) bswap_64(q) - -#elif defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DragonFly__) -# include -# define ZSWAP16(q) bswap16(q) -# define ZSWAP32(q) bswap32(q) -# define ZSWAP64(q) bswap64(q) - -#elif defined(__INTEL_COMPILER) -/* ICC does not provide a two byte swap. */ -# define ZSWAP16(q) ((((q) & 0xff) << 8) | (((q) & 0xff00) >> 8)) -# define ZSWAP32(q) _bswap(q) -# define ZSWAP64(q) _bswap64(q) - -#else -# define ZSWAP16(q) ((((q) & 0xff) << 8) | (((q) & 0xff00) >> 8)) -# define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ - (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) -# define ZSWAP64(q) \ - ((q & 0xFF00000000000000u) >> 56u) | \ - ((q & 0x00FF000000000000u) >> 40u) | \ - ((q & 0x0000FF0000000000u) >> 24u) | \ - ((q & 0x000000FF00000000u) >> 8u) | \ - ((q & 0x00000000FF000000u) << 8u) | \ - ((q & 0x0000000000FF0000u) << 24u) | \ - ((q & 0x000000000000FF00u) << 40u) | \ - ((q & 0x00000000000000FFu) << 56u) -#endif - -/* Only enable likely/unlikely if the compiler is known to support it */ -#if (defined(__GNUC__) && (__GNUC__ >= 3)) || defined(__INTEL_COMPILER) || defined(__Clang__) -# ifndef likely -# define likely(x) __builtin_expect(!!(x), 1) -# endif -# ifndef unlikely -# define unlikely(x) __builtin_expect(!!(x), 0) -# endif -#else -# ifndef likely -# define likely(x) x -# endif -# ifndef unlikely -# define unlikely(x) x -# endif -#endif /* (un)likely */ - -#if defined(_MSC_VER) -#define ALIGNED_(x) __declspec(align(x)) -#else -#if defined(__GNUC__) -#define ALIGNED_(x) __attribute__ ((aligned(x))) -#endif -#endif - -#if defined(X86_CPUID) -# include "arch/x86/x86.h" -#elif defined(__aarch64__) || defined(__arm__) || defined(_M_ARM) -# include "arch/arm/arm.h" -#endif - -#endif /* ZUTIL_H_ */