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248 lines
8.0 KiB
C
248 lines
8.0 KiB
C
/* ioapi.h -- IO base function header for compress/uncompress .zip
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part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
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Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
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Modifications for Zip64 support
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Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
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For more info read MiniZip_info.txt
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*/
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#if defined(_WIN32) && (!(defined(_CRT_SECURE_NO_WARNINGS)))
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#define _CRT_SECURE_NO_WARNINGS
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#endif
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#if defined(__APPLE__) || defined(IOAPI_NO_64)
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// In darwin and perhaps other BSD variants off_t is a 64 bit value, hence no need for specific 64 bit functions
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#define FOPEN_FUNC(filename, mode) fopen(filename, mode)
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#define FTELLO_FUNC(stream) ftello(stream)
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#define FSEEKO_FUNC(stream, offset, origin) fseeko(stream, offset, origin)
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#else
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#define FOPEN_FUNC(filename, mode) fopen64(filename, mode)
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#define FTELLO_FUNC(stream) ftello64(stream)
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#define FSEEKO_FUNC(stream, offset, origin) fseeko64(stream, offset, origin)
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#endif
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#include "ioapi.h"
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voidpf call_zopen64 (const zlib_filefunc64_32_def* pfilefunc,const void*filename,int mode)
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{
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if (pfilefunc->zfile_func64.zopen64_file != NULL)
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return (*(pfilefunc->zfile_func64.zopen64_file)) (pfilefunc->zfile_func64.opaque,filename,mode);
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else
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{
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return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque,(const char*)filename,mode);
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}
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}
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long call_zseek64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZPOS64_T offset, int origin)
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{
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if (pfilefunc->zfile_func64.zseek64_file != NULL)
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return (*(pfilefunc->zfile_func64.zseek64_file)) (pfilefunc->zfile_func64.opaque,filestream,offset,origin);
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else
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{
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uLong offsetTruncated = (uLong)offset;
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if (offsetTruncated != offset)
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return -1;
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else
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return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream,offsetTruncated,origin);
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}
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}
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ZPOS64_T call_ztell64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream)
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{
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if (pfilefunc->zfile_func64.zseek64_file != NULL)
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return (*(pfilefunc->zfile_func64.ztell64_file)) (pfilefunc->zfile_func64.opaque,filestream);
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else
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{
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uLong tell_uLong = (*(pfilefunc->ztell32_file))(pfilefunc->zfile_func64.opaque,filestream);
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if ((tell_uLong) == MAXU32)
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return (ZPOS64_T)-1;
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else
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return tell_uLong;
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}
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}
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void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32,const zlib_filefunc_def* p_filefunc32)
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{
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p_filefunc64_32->zfile_func64.zopen64_file = NULL;
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p_filefunc64_32->zopen32_file = p_filefunc32->zopen_file;
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p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
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p_filefunc64_32->zfile_func64.zread_file = p_filefunc32->zread_file;
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p_filefunc64_32->zfile_func64.zwrite_file = p_filefunc32->zwrite_file;
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p_filefunc64_32->zfile_func64.ztell64_file = NULL;
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p_filefunc64_32->zfile_func64.zseek64_file = NULL;
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p_filefunc64_32->zfile_func64.zclose_file = p_filefunc32->zclose_file;
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p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
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p_filefunc64_32->zfile_func64.opaque = p_filefunc32->opaque;
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p_filefunc64_32->zseek32_file = p_filefunc32->zseek_file;
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p_filefunc64_32->ztell32_file = p_filefunc32->ztell_file;
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}
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static voidpf ZCALLBACK fopen_file_func OF((voidpf opaque, const char* filename, int mode));
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static uLong ZCALLBACK fread_file_func OF((voidpf opaque, voidpf stream, void* buf, uLong size));
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static uLong ZCALLBACK fwrite_file_func OF((voidpf opaque, voidpf stream, const void* buf,uLong size));
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static ZPOS64_T ZCALLBACK ftell64_file_func OF((voidpf opaque, voidpf stream));
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static long ZCALLBACK fseek64_file_func OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin));
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static int ZCALLBACK fclose_file_func OF((voidpf opaque, voidpf stream));
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static int ZCALLBACK ferror_file_func OF((voidpf opaque, voidpf stream));
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static voidpf ZCALLBACK fopen_file_func (voidpf opaque, const char* filename, int mode)
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{
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FILE* file = NULL;
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const char* mode_fopen = NULL;
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if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
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mode_fopen = "rb";
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else
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if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
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mode_fopen = "r+b";
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else
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if (mode & ZLIB_FILEFUNC_MODE_CREATE)
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mode_fopen = "wb";
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if ((filename!=NULL) && (mode_fopen != NULL))
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file = fopen(filename, mode_fopen);
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return file;
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}
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static voidpf ZCALLBACK fopen64_file_func (voidpf opaque, const void* filename, int mode)
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{
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FILE* file = NULL;
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const char* mode_fopen = NULL;
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if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
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mode_fopen = "rb";
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else
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if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
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mode_fopen = "r+b";
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else
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if (mode & ZLIB_FILEFUNC_MODE_CREATE)
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mode_fopen = "wb";
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if ((filename!=NULL) && (mode_fopen != NULL))
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file = FOPEN_FUNC((const char*)filename, mode_fopen);
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return file;
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}
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static uLong ZCALLBACK fread_file_func (voidpf opaque, voidpf stream, void* buf, uLong size)
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{
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uLong ret;
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ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream);
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return ret;
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}
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static uLong ZCALLBACK fwrite_file_func (voidpf opaque, voidpf stream, const void* buf, uLong size)
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{
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uLong ret;
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ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream);
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return ret;
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}
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static long ZCALLBACK ftell_file_func (voidpf opaque, voidpf stream)
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{
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long ret;
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ret = ftell((FILE *)stream);
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return ret;
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}
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static ZPOS64_T ZCALLBACK ftell64_file_func (voidpf opaque, voidpf stream)
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{
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ZPOS64_T ret;
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ret = FTELLO_FUNC((FILE *)stream);
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return ret;
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}
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static long ZCALLBACK fseek_file_func (voidpf opaque, voidpf stream, uLong offset, int origin)
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{
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int fseek_origin=0;
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long ret;
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switch (origin)
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{
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case ZLIB_FILEFUNC_SEEK_CUR :
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fseek_origin = SEEK_CUR;
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break;
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case ZLIB_FILEFUNC_SEEK_END :
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fseek_origin = SEEK_END;
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break;
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case ZLIB_FILEFUNC_SEEK_SET :
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fseek_origin = SEEK_SET;
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break;
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default: return -1;
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}
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ret = 0;
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if (fseek((FILE *)stream, offset, fseek_origin) != 0)
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ret = -1;
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return ret;
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}
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static long ZCALLBACK fseek64_file_func (voidpf opaque, voidpf stream, ZPOS64_T offset, int origin)
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{
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int fseek_origin=0;
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long ret;
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switch (origin)
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{
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case ZLIB_FILEFUNC_SEEK_CUR :
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fseek_origin = SEEK_CUR;
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break;
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case ZLIB_FILEFUNC_SEEK_END :
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fseek_origin = SEEK_END;
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break;
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case ZLIB_FILEFUNC_SEEK_SET :
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fseek_origin = SEEK_SET;
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break;
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default: return -1;
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}
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ret = 0;
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if(FSEEKO_FUNC((FILE *)stream, offset, fseek_origin) != 0)
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ret = -1;
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return ret;
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}
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static int ZCALLBACK fclose_file_func (voidpf opaque, voidpf stream)
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{
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int ret;
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ret = fclose((FILE *)stream);
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return ret;
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}
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static int ZCALLBACK ferror_file_func (voidpf opaque, voidpf stream)
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{
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int ret;
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ret = ferror((FILE *)stream);
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return ret;
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}
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void fill_fopen_filefunc (pzlib_filefunc_def)
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zlib_filefunc_def* pzlib_filefunc_def;
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{
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pzlib_filefunc_def->zopen_file = fopen_file_func;
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pzlib_filefunc_def->zread_file = fread_file_func;
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pzlib_filefunc_def->zwrite_file = fwrite_file_func;
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pzlib_filefunc_def->ztell_file = ftell_file_func;
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pzlib_filefunc_def->zseek_file = fseek_file_func;
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pzlib_filefunc_def->zclose_file = fclose_file_func;
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pzlib_filefunc_def->zerror_file = ferror_file_func;
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pzlib_filefunc_def->opaque = NULL;
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}
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void fill_fopen64_filefunc (zlib_filefunc64_def* pzlib_filefunc_def)
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{
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pzlib_filefunc_def->zopen64_file = fopen64_file_func;
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pzlib_filefunc_def->zread_file = fread_file_func;
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pzlib_filefunc_def->zwrite_file = fwrite_file_func;
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pzlib_filefunc_def->ztell64_file = ftell64_file_func;
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pzlib_filefunc_def->zseek64_file = fseek64_file_func;
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pzlib_filefunc_def->zclose_file = fclose_file_func;
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pzlib_filefunc_def->zerror_file = ferror_file_func;
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pzlib_filefunc_def->opaque = NULL;
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}
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