1 /* ioapi.h -- IO base function header for compress/uncompress .zip
2 part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
4 Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
6 Modifications for Zip64 support
7 Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
9 For more info read MiniZip_info.txt
13 #if defined(_WIN32) && (!(defined(_CRT_SECURE_NO_WARNINGS)))
14 #define _CRT_SECURE_NO_WARNINGS
17 #if defined(__APPLE__) || defined(IOAPI_NO_64) || defined(__HAIKU__) || defined(MINIZIP_FOPEN_NO_64)
18 // In darwin and perhaps other BSD variants off_t is a 64 bit value, hence no need for specific 64 bit functions
19 #define FOPEN_FUNC(filename, mode) fopen(filename, mode)
20 #define FTELLO_FUNC(stream) ftello(stream)
21 #define FSEEKO_FUNC(stream, offset, origin) fseeko(stream, offset, origin)
23 #define FOPEN_FUNC(filename, mode) fopen64(filename, mode)
24 #define FTELLO_FUNC(stream) ftello64(stream)
25 #define FSEEKO_FUNC(stream, offset, origin) fseeko64(stream, offset, origin)
31 voidpf call_zopen64 (const zlib_filefunc64_32_def* pfilefunc, const void*filename, int mode) {
32 if (pfilefunc->zfile_func64.zopen64_file != NULL)
33 return (*(pfilefunc->zfile_func64.zopen64_file)) (pfilefunc->zfile_func64.opaque,filename,mode);
36 return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque,(const char*)filename,mode);
40 long call_zseek64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZPOS64_T offset, int origin) {
41 if (pfilefunc->zfile_func64.zseek64_file != NULL)
42 return (*(pfilefunc->zfile_func64.zseek64_file)) (pfilefunc->zfile_func64.opaque,filestream,offset,origin);
45 uLong offsetTruncated = (uLong)offset;
46 if (offsetTruncated != offset)
49 return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream,offsetTruncated,origin);
53 ZPOS64_T call_ztell64 (const zlib_filefunc64_32_def* pfilefunc, voidpf filestream) {
54 if (pfilefunc->zfile_func64.zseek64_file != NULL)
55 return (*(pfilefunc->zfile_func64.ztell64_file)) (pfilefunc->zfile_func64.opaque,filestream);
58 uLong tell_uLong = (uLong)(*(pfilefunc->ztell32_file))(pfilefunc->zfile_func64.opaque,filestream);
59 if ((tell_uLong) == MAXU32)
66 void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32, const zlib_filefunc_def* p_filefunc32) {
67 p_filefunc64_32->zfile_func64.zopen64_file = NULL;
68 p_filefunc64_32->zopen32_file = p_filefunc32->zopen_file;
69 p_filefunc64_32->zfile_func64.zread_file = p_filefunc32->zread_file;
70 p_filefunc64_32->zfile_func64.zwrite_file = p_filefunc32->zwrite_file;
71 p_filefunc64_32->zfile_func64.ztell64_file = NULL;
72 p_filefunc64_32->zfile_func64.zseek64_file = NULL;
73 p_filefunc64_32->zfile_func64.zclose_file = p_filefunc32->zclose_file;
74 p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
75 p_filefunc64_32->zfile_func64.opaque = p_filefunc32->opaque;
76 p_filefunc64_32->zseek32_file = p_filefunc32->zseek_file;
77 p_filefunc64_32->ztell32_file = p_filefunc32->ztell_file;
82 static voidpf ZCALLBACK fopen_file_func(voidpf opaque, const char* filename, int mode) {
84 const char* mode_fopen = NULL;
86 if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
89 if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
92 if (mode & ZLIB_FILEFUNC_MODE_CREATE)
95 if ((filename!=NULL) && (mode_fopen != NULL))
96 file = fopen(filename, mode_fopen);
100 static voidpf ZCALLBACK fopen64_file_func(voidpf opaque, const void* filename, int mode) {
102 const char* mode_fopen = NULL;
104 if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
107 if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
110 if (mode & ZLIB_FILEFUNC_MODE_CREATE)
113 if ((filename!=NULL) && (mode_fopen != NULL))
114 file = FOPEN_FUNC((const char*)filename, mode_fopen);
119 static uLong ZCALLBACK fread_file_func(voidpf opaque, voidpf stream, void* buf, uLong size) {
122 ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream);
126 static uLong ZCALLBACK fwrite_file_func(voidpf opaque, voidpf stream, const void* buf, uLong size) {
129 ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream);
133 static long ZCALLBACK ftell_file_func(voidpf opaque, voidpf stream) {
136 ret = ftell((FILE *)stream);
141 static ZPOS64_T ZCALLBACK ftell64_file_func(voidpf opaque, voidpf stream) {
144 ret = (ZPOS64_T)FTELLO_FUNC((FILE *)stream);
148 static long ZCALLBACK fseek_file_func(voidpf opaque, voidpf stream, uLong offset, int origin) {
154 case ZLIB_FILEFUNC_SEEK_CUR :
155 fseek_origin = SEEK_CUR;
157 case ZLIB_FILEFUNC_SEEK_END :
158 fseek_origin = SEEK_END;
160 case ZLIB_FILEFUNC_SEEK_SET :
161 fseek_origin = SEEK_SET;
166 if (fseek((FILE *)stream, (long)offset, fseek_origin) != 0)
171 static long ZCALLBACK fseek64_file_func(voidpf opaque, voidpf stream, ZPOS64_T offset, int origin) {
177 case ZLIB_FILEFUNC_SEEK_CUR :
178 fseek_origin = SEEK_CUR;
180 case ZLIB_FILEFUNC_SEEK_END :
181 fseek_origin = SEEK_END;
183 case ZLIB_FILEFUNC_SEEK_SET :
184 fseek_origin = SEEK_SET;
190 if(FSEEKO_FUNC((FILE *)stream, (z_off64_t)offset, fseek_origin) != 0)
197 static int ZCALLBACK fclose_file_func(voidpf opaque, voidpf stream) {
200 ret = fclose((FILE *)stream);
204 static int ZCALLBACK ferror_file_func(voidpf opaque, voidpf stream) {
207 ret = ferror((FILE *)stream);
211 void fill_fopen_filefunc(zlib_filefunc_def* pzlib_filefunc_def) {
212 pzlib_filefunc_def->zopen_file = fopen_file_func;
213 pzlib_filefunc_def->zread_file = fread_file_func;
214 pzlib_filefunc_def->zwrite_file = fwrite_file_func;
215 pzlib_filefunc_def->ztell_file = ftell_file_func;
216 pzlib_filefunc_def->zseek_file = fseek_file_func;
217 pzlib_filefunc_def->zclose_file = fclose_file_func;
218 pzlib_filefunc_def->zerror_file = ferror_file_func;
219 pzlib_filefunc_def->opaque = NULL;
222 void fill_fopen64_filefunc(zlib_filefunc64_def* pzlib_filefunc_def) {
223 pzlib_filefunc_def->zopen64_file = fopen64_file_func;
224 pzlib_filefunc_def->zread_file = fread_file_func;
225 pzlib_filefunc_def->zwrite_file = fwrite_file_func;
226 pzlib_filefunc_def->ztell64_file = ftell64_file_func;
227 pzlib_filefunc_def->zseek64_file = fseek64_file_func;
228 pzlib_filefunc_def->zclose_file = fclose_file_func;
229 pzlib_filefunc_def->zerror_file = ferror_file_func;
230 pzlib_filefunc_def->opaque = NULL;