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94 lines
2.3 KiB
C++
94 lines
2.3 KiB
C++
/** \file MemFile.h
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** \date 2005-04-25
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** \author grymse@alhem.net
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**/
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/*
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Copyright (C) 2004,2005 Anders Hedstrom
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This library is made available under the terms of the GNU GPL.
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If you would like to use this library in a closed-source application,
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a separate license agreement is available. For information about
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the closed-source license agreement for the C++ sockets library,
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please visit http://www.alhem.net/Sockets/license.html and/or
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email license@alhem.net.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef _MEMFILE_H
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#define _MEMFILE_H
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#include <map>
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#include "IFile.h"
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#define BLOCKSIZE 32768
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#ifdef SOCKETS_NAMESPACE
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namespace SOCKETS_NAMESPACE {
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#endif
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/** Implements a memory file.
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\ingroup file */
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class MemFile : public IFile
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{
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public:
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/** File block structure.
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\ingroup file */
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struct block_t {
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block_t() : next(nullptr) {}
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struct block_t *next;
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char data[BLOCKSIZE];
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};
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public:
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MemFile();
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MemFile(const std::string& path);
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~MemFile();
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bool fopen(const std::string& path, const std::string& mode);
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void fclose();
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size_t fread(char *ptr, size_t size, size_t nmemb);
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size_t fwrite(const char *ptr, size_t size, size_t nmemb);
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char *fgets(char *s, int size);
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void fprintf(char *format, ...);
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off_t size();
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bool eof();
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private:
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MemFile(const MemFile& ) {} // copy constructor
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MemFile& operator=(const MemFile& ) { return *this; } // assignment operator
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static std::map<std::string,block_t *> m_files;
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std::string m_path;
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bool m_temporary;
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block_t *m_base;
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block_t *m_current_read;
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block_t *m_current_write;
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size_t m_read_ptr;
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size_t m_write_ptr;
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};
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#ifdef SOCKETS_NAMESPACE
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}
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#endif
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#endif // _MEMFILE_H
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