third_party/zlib/contrib/minizip/ioapi.c

   1 /* ioapi.h -- IO base function header for compress/uncompress .zip
   2    part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
   3
   4          Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
   5
   6          Modifications for Zip64 support
   7          Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
   8
   9          For more info read MiniZip_info.txt
  10
  11 */
  12
  13 #if (defined(_WIN32))
  14         #define _CRT_SECURE_NO_WARNINGS
  15 #endif
  16
  17 #include "ioapi.h"
  18
  19 voidpf call_zopen64 (const zlib_filefunc64_32_def* pfilefunc,const void*filename,int mode)
  20 {
  21     if (pfilefunc->zfile_func64.zopen64_file != NULL)
  22         return (*(pfilefunc->zfile_func64.zopen64_file)) (pfilefunc->zfile_func64.opaque,filename,mode);
  23     else
  24     {
  25         return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque,(const char*)filename,mode);
  26     }
  27 }
  28
  29 long call_zseek64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZPOS64_T offset, int origin)
  30 {
  31     if (pfilefunc->zfile_func64.zseek64_file != NULL)
  32         return (*(pfilefunc->zfile_func64.zseek64_file)) (pfilefunc->zfile_func64.opaque,filestream,offset,origin);
  33     else
  34     {
  35         uLong offsetTruncated = (uLong)offset;
  36         if (offsetTruncated != offset)
  37             return -1;
  38         else
  39             return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream,offsetTruncated,origin);
  40     }
  41 }
  42
  43 ZPOS64_T call_ztell64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream)
  44 {
  45     if (pfilefunc->zfile_func64.zseek64_file != NULL)
  46         return (*(pfilefunc->zfile_func64.ztell64_file)) (pfilefunc->zfile_func64.opaque,filestream);
  47     else
  48     {
  49         uLong tell_uLong = (*(pfilefunc->ztell32_file))(pfilefunc->zfile_func64.opaque,filestream);
  50         if ((tell_uLong) == ((uLong)-1))
  51             return (ZPOS64_T)-1;
  52         else
  53             return tell_uLong;
  54     }
  55 }
  56
  57 void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32,const zlib_filefunc_def* p_filefunc32)
  58 {
  59     p_filefunc64_32->zfile_func64.zopen64_file = NULL;
  60     p_filefunc64_32->zopen32_file = p_filefunc32->zopen_file;
  61     p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
  62     p_filefunc64_32->zfile_func64.zread_file = p_filefunc32->zread_file;
  63     p_filefunc64_32->zfile_func64.zwrite_file = p_filefunc32->zwrite_file;
  64     p_filefunc64_32->zfile_func64.ztell64_file = NULL;
  65     p_filefunc64_32->zfile_func64.zseek64_file = NULL;
  66     p_filefunc64_32->zfile_func64.zclose_file = p_filefunc32->zclose_file;
  67     p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
  68     p_filefunc64_32->zfile_func64.opaque = p_filefunc32->opaque;
  69     p_filefunc64_32->zseek32_file = p_filefunc32->zseek_file;
  70     p_filefunc64_32->ztell32_file = p_filefunc32->ztell_file;
  71 }
  72
  73
  74
  75 static voidpf  ZCALLBACK fopen_file_func OF((voidpf opaque, const char* filename, int mode));
  76 static uLong   ZCALLBACK fread_file_func OF((voidpf opaque, voidpf stream, void* buf, uLong size));
  77 static uLong   ZCALLBACK fwrite_file_func OF((voidpf opaque, voidpf stream, const void* buf,uLong size));
  78 static ZPOS64_T ZCALLBACK ftell64_file_func OF((voidpf opaque, voidpf stream));
  79 static long    ZCALLBACK fseek64_file_func OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin));
  80 static int     ZCALLBACK fclose_file_func OF((voidpf opaque, voidpf stream));
  81 static int     ZCALLBACK ferror_file_func OF((voidpf opaque, voidpf stream));
  82
  83 static voidpf ZCALLBACK fopen_file_func (voidpf opaque, const char* filename, int mode)
  84 {
  85     FILE* file = NULL;
  86     const char* mode_fopen = NULL;
  87     if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
  88         mode_fopen = "rb";
  89     else
  90     if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
  91         mode_fopen = "r+b";
  92     else
  93     if (mode & ZLIB_FILEFUNC_MODE_CREATE)
  94         mode_fopen = "wb";
  95
  96     if ((filename!=NULL) && (mode_fopen != NULL))
  97         file = fopen(filename, mode_fopen);
  98     return file;
  99 }
 100
 101 static voidpf ZCALLBACK fopen64_file_func (voidpf opaque, const void* filename, int mode)
 102 {
 103     FILE* file = NULL;
 104     const char* mode_fopen = NULL;
 105     if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
 106         mode_fopen = "rb";
 107     else
 108     if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
 109         mode_fopen = "r+b";
 110     else
 111     if (mode & ZLIB_FILEFUNC_MODE_CREATE)
 112         mode_fopen = "wb";
 113
 114     if ((filename!=NULL) && (mode_fopen != NULL))
 115         file = fopen64((const char*)filename, mode_fopen);
 116     return file;
 117 }
 118
 119
 120 static uLong ZCALLBACK fread_file_func (voidpf opaque, voidpf stream, void* buf, uLong size)
 121 {
 122     uLong ret;
 123     ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream);
 124     return ret;
 125 }
 126
 127 static uLong ZCALLBACK fwrite_file_func (voidpf opaque, voidpf stream, const void* buf, uLong size)
 128 {
 129     uLong ret;
 130     ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream);
 131     return ret;
 132 }
 133
 134 static long ZCALLBACK ftell_file_func (voidpf opaque, voidpf stream)
 135 {
 136     long ret;
 137     ret = ftell((FILE *)stream);
 138     return ret;
 139 }
 140
 141
 142 static ZPOS64_T ZCALLBACK ftell64_file_func (voidpf opaque, voidpf stream)
 143 {
 144     ZPOS64_T ret;
 145     ret = ftello64((FILE *)stream);
 146     return ret;
 147 }
 148
 149 static long ZCALLBACK fseek_file_func (voidpf  opaque, voidpf stream, uLong offset, int origin)
 150 {
 151     int fseek_origin=0;
 152     long ret;
 153     switch (origin)
 154     {
 155     case ZLIB_FILEFUNC_SEEK_CUR :
 156         fseek_origin = SEEK_CUR;
 157         break;
 158     case ZLIB_FILEFUNC_SEEK_END :
 159         fseek_origin = SEEK_END;
 160         break;
 161     case ZLIB_FILEFUNC_SEEK_SET :
 162         fseek_origin = SEEK_SET;
 163         break;
 164     default: return -1;
 165     }
 166     ret = 0;
 167     if (fseek((FILE *)stream, offset, fseek_origin) != 0)
 168         ret = -1;
 169     return ret;
 170 }
 171
 172 static long ZCALLBACK fseek64_file_func (voidpf  opaque, voidpf stream, ZPOS64_T offset, int origin)
 173 {
 174     int fseek_origin=0;
 175     long ret;
 176     switch (origin)
 177     {
 178     case ZLIB_FILEFUNC_SEEK_CUR :
 179         fseek_origin = SEEK_CUR;
 180         break;
 181     case ZLIB_FILEFUNC_SEEK_END :
 182         fseek_origin = SEEK_END;
 183         break;
 184     case ZLIB_FILEFUNC_SEEK_SET :
 185         fseek_origin = SEEK_SET;
 186         break;
 187     default: return -1;
 188     }
 189     ret = 0;
 190
 191     if(fseeko64((FILE *)stream, offset, fseek_origin) != 0)
 192                         ret = -1;
 193
 194     return ret;
 195 }
 196
 197
 198 static int ZCALLBACK fclose_file_func (voidpf opaque, voidpf stream)
 199 {
 200     int ret;
 201     ret = fclose((FILE *)stream);
 202     return ret;
 203 }
 204
 205 static int ZCALLBACK ferror_file_func (voidpf opaque, voidpf stream)
 206 {
 207     int ret;
 208     ret = ferror((FILE *)stream);
 209     return ret;
 210 }
 211
 212 void fill_fopen_filefunc (pzlib_filefunc_def)
 213   zlib_filefunc_def* pzlib_filefunc_def;
 214 {
 215     pzlib_filefunc_def->zopen_file = fopen_file_func;
 216     pzlib_filefunc_def->zread_file = fread_file_func;
 217     pzlib_filefunc_def->zwrite_file = fwrite_file_func;
 218     pzlib_filefunc_def->ztell_file = ftell_file_func;
 219     pzlib_filefunc_def->zseek_file = fseek_file_func;
 220     pzlib_filefunc_def->zclose_file = fclose_file_func;
 221     pzlib_filefunc_def->zerror_file = ferror_file_func;
 222     pzlib_filefunc_def->opaque = NULL;
 223 }
 224
 225 void fill_fopen64_filefunc (zlib_filefunc64_def*  pzlib_filefunc_def)
 226 {
 227     pzlib_filefunc_def->zopen64_file = fopen64_file_func;
 228     pzlib_filefunc_def->zread_file = fread_file_func;
 229     pzlib_filefunc_def->zwrite_file = fwrite_file_func;
 230     pzlib_filefunc_def->ztell64_file = ftell64_file_func;
 231     pzlib_filefunc_def->zseek64_file = fseek64_file_func;
 232     pzlib_filefunc_def->zclose_file = fclose_file_func;
 233     pzlib_filefunc_def->zerror_file = ferror_file_func;
 234     pzlib_filefunc_def->opaque = NULL;
 235 }