packvfs: ef6c1472607f test/zipcat/src/minizip/ioapi.c

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view test/zipcat/src/minizip/ioapi.c @ 3:ef6c1472607f

jesus fucking christ that was easy... written a test prog "zipcat" to try out zlib's contrib library "minizip", to list and read files out of zip archives directly...

author	John Tsiombikas <nuclear@member.fsf.org>
date	Mon, 04 Nov 2013 06:46:17 +0200
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1 /* ioapi.h -- IO base function header for compress/uncompress .zip

2 part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )

6 Modifications for Zip64 support

9 For more info read MiniZip_info.txt

11 */

13 #if defined(_WIN32) && (!(defined(_CRT_SECURE_NO_WARNINGS)))

14 #define _CRT_SECURE_NO_WARNINGS

15 #endif

17 #if defined(__APPLE__) || defined(IOAPI_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)

22 #else

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)

26 #endif

29 #include "ioapi.h"

31 voidpf call_zopen64 (const zlib_filefunc64_32_def* pfilefunc,const void*filename,int mode)

32 {

33 if (pfilefunc->zfile_func64.zopen64_file != NULL)

34 return (*(pfilefunc->zfile_func64.zopen64_file)) (pfilefunc->zfile_func64.opaque,filename,mode);

35 else

36 {

37 return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque,(const char*)filename,mode);

38 }

39 }

41 long call_zseek64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZPOS64_T offset, int origin)

42 {

43 if (pfilefunc->zfile_func64.zseek64_file != NULL)

44 return (*(pfilefunc->zfile_func64.zseek64_file)) (pfilefunc->zfile_func64.opaque,filestream,offset,origin);

45 else

46 {

47 uLong offsetTruncated = (uLong)offset;

48 if (offsetTruncated != offset)

49 return -1;

50 else

51 return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream,offsetTruncated,origin);

52 }

53 }

55 ZPOS64_T call_ztell64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream)

56 {

57 if (pfilefunc->zfile_func64.zseek64_file != NULL)

58 return (*(pfilefunc->zfile_func64.ztell64_file)) (pfilefunc->zfile_func64.opaque,filestream);

59 else

60 {

61 uLong tell_uLong = (*(pfilefunc->ztell32_file))(pfilefunc->zfile_func64.opaque,filestream);

62 if ((tell_uLong) == MAXU32)

63 return (ZPOS64_T)-1;

64 else

65 return tell_uLong;

66 }

67 }

69 void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32,const zlib_filefunc_def* p_filefunc32)

70 {

71 p_filefunc64_32->zfile_func64.zopen64_file = NULL;

72 p_filefunc64_32->zopen32_file = p_filefunc32->zopen_file;

73 p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;

74 p_filefunc64_32->zfile_func64.zread_file = p_filefunc32->zread_file;

75 p_filefunc64_32->zfile_func64.zwrite_file = p_filefunc32->zwrite_file;

76 p_filefunc64_32->zfile_func64.ztell64_file = NULL;

77 p_filefunc64_32->zfile_func64.zseek64_file = NULL;

78 p_filefunc64_32->zfile_func64.zclose_file = p_filefunc32->zclose_file;

79 p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;

80 p_filefunc64_32->zfile_func64.opaque = p_filefunc32->opaque;

81 p_filefunc64_32->zseek32_file = p_filefunc32->zseek_file;

82 p_filefunc64_32->ztell32_file = p_filefunc32->ztell_file;

83 }

87 static voidpf ZCALLBACK fopen_file_func OF((voidpf opaque, const char* filename, int mode));

88 static uLong ZCALLBACK fread_file_func OF((voidpf opaque, voidpf stream, void* buf, uLong size));

89 static uLong ZCALLBACK fwrite_file_func OF((voidpf opaque, voidpf stream, const void* buf,uLong size));

90 static ZPOS64_T ZCALLBACK ftell64_file_func OF((voidpf opaque, voidpf stream));

91 static long ZCALLBACK fseek64_file_func OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin));

92 static int ZCALLBACK fclose_file_func OF((voidpf opaque, voidpf stream));

93 static int ZCALLBACK ferror_file_func OF((voidpf opaque, voidpf stream));

95 static voidpf ZCALLBACK fopen_file_func (voidpf opaque, const char* filename, int mode)

96 {

97 FILE* file = NULL;

98 const char* mode_fopen = NULL;

99 if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)

100 mode_fopen = "rb";

101 else

102 if (mode & ZLIB_FILEFUNC_MODE_EXISTING)

103 mode_fopen = "r+b";

104 else

105 if (mode & ZLIB_FILEFUNC_MODE_CREATE)

106 mode_fopen = "wb";

107

108 if ((filename!=NULL) && (mode_fopen != NULL))

109 file = fopen(filename, mode_fopen);

110 return file;

111 }

112

113 static voidpf ZCALLBACK fopen64_file_func (voidpf opaque, const void* filename, int mode)

114 {

115 FILE* file = NULL;

116 const char* mode_fopen = NULL;

117 if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)

118 mode_fopen = "rb";

119 else

120 if (mode & ZLIB_FILEFUNC_MODE_EXISTING)

121 mode_fopen = "r+b";

122 else

123 if (mode & ZLIB_FILEFUNC_MODE_CREATE)

124 mode_fopen = "wb";

125

126 if ((filename!=NULL) && (mode_fopen != NULL))

127 file = FOPEN_FUNC((const char*)filename, mode_fopen);

128 return file;

129 }

130

131

132 static uLong ZCALLBACK fread_file_func (voidpf opaque, voidpf stream, void* buf, uLong size)

133 {

134 uLong ret;

135 ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream);

136 return ret;

137 }

138

139 static uLong ZCALLBACK fwrite_file_func (voidpf opaque, voidpf stream, const void* buf, uLong size)

140 {

141 uLong ret;

142 ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream);

143 return ret;

144 }

145

146 static long ZCALLBACK ftell_file_func (voidpf opaque, voidpf stream)

147 {

148 long ret;

149 ret = ftell((FILE *)stream);

150 return ret;

151 }

152

153

154 static ZPOS64_T ZCALLBACK ftell64_file_func (voidpf opaque, voidpf stream)

155 {

156 ZPOS64_T ret;

157 ret = FTELLO_FUNC((FILE *)stream);

158 return ret;

159 }

160

161 static long ZCALLBACK fseek_file_func (voidpf opaque, voidpf stream, uLong offset, int origin)

162 {

163 int fseek_origin=0;

164 long ret;

165 switch (origin)

166 {

167 case ZLIB_FILEFUNC_SEEK_CUR :

168 fseek_origin = SEEK_CUR;

169 break;

170 case ZLIB_FILEFUNC_SEEK_END :

171 fseek_origin = SEEK_END;

172 break;

173 case ZLIB_FILEFUNC_SEEK_SET :

174 fseek_origin = SEEK_SET;

175 break;

176 default: return -1;

177 }

178 ret = 0;

179 if (fseek((FILE *)stream, offset, fseek_origin) != 0)

180 ret = -1;

181 return ret;

182 }

183

184 static long ZCALLBACK fseek64_file_func (voidpf opaque, voidpf stream, ZPOS64_T offset, int origin)

185 {

186 int fseek_origin=0;

187 long ret;

188 switch (origin)

189 {

190 case ZLIB_FILEFUNC_SEEK_CUR :

191 fseek_origin = SEEK_CUR;

192 break;

193 case ZLIB_FILEFUNC_SEEK_END :

194 fseek_origin = SEEK_END;

195 break;

196 case ZLIB_FILEFUNC_SEEK_SET :

197 fseek_origin = SEEK_SET;

198 break;

199 default: return -1;

200 }

201 ret = 0;

202

203 if(FSEEKO_FUNC((FILE *)stream, offset, fseek_origin) != 0)

204 ret = -1;

205

206 return ret;

207 }

208

209

210 static int ZCALLBACK fclose_file_func (voidpf opaque, voidpf stream)

211 {

212 int ret;

213 ret = fclose((FILE *)stream);

214 return ret;

215 }

216

217 static int ZCALLBACK ferror_file_func (voidpf opaque, voidpf stream)

218 {

219 int ret;

220 ret = ferror((FILE *)stream);

221 return ret;

222 }

223

224 void fill_fopen_filefunc (pzlib_filefunc_def)

225 zlib_filefunc_def* pzlib_filefunc_def;

226 {

227 pzlib_filefunc_def->zopen_file = fopen_file_func;

228 pzlib_filefunc_def->zread_file = fread_file_func;

229 pzlib_filefunc_def->zwrite_file = fwrite_file_func;

230 pzlib_filefunc_def->ztell_file = ftell_file_func;

231 pzlib_filefunc_def->zseek_file = fseek_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 }

236

237 void fill_fopen64_filefunc (zlib_filefunc64_def* pzlib_filefunc_def)

238 {

239 pzlib_filefunc_def->zopen64_file = fopen64_file_func;

240 pzlib_filefunc_def->zread_file = fread_file_func;

241 pzlib_filefunc_def->zwrite_file = fwrite_file_func;

242 pzlib_filefunc_def->ztell64_file = ftell64_file_func;

243 pzlib_filefunc_def->zseek64_file = fseek64_file_func;

244 pzlib_filefunc_def->zclose_file = fclose_file_func;

245 pzlib_filefunc_def->zerror_file = ferror_file_func;

246 pzlib_filefunc_def->opaque = NULL;

247 }