Zlib ng

2026-09-03 21:56:36 +00:00 · 2019-06-30 18:13:46 -07:00
parent d7c110041a
commit e086f53b97
116 changed files with 30587 additions and 13 deletions
@@ -0,0 +1,140 @@
+/* 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 <stdlib.h>
+#  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 */