1 /* 2 =========================================================================== 3 Copyright (C) 1999-2005 Id Software, Inc. 4 5 This file is part of Quake III Arena source code. 6 7 Quake III Arena source code is free software; you can redistribute it 8 and/or modify it under the terms of the GNU General Public License as 9 published by the Free Software Foundation; either version 2 of the License, 10 or (at your option) any later version. 11 12 Quake III Arena source code is distributed in the hope that it will be 13 useful, but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with Quake III Arena source code; if not, write to the Free Software 19 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 20 =========================================================================== 21 */ 22 23 #if defined(STRICTUNZIP) || defined(STRICTZIPUNZIP) 24 /* like the STRICT of WIN32, we define a pointer that cannot be converted 25 from (void*) without cast */ 26 typedef struct TagunzFile__ { int unused; } unzFile__; 27 typedef unzFile__ *unzFile; 28 #else 29 typedef void* unzFile; 30 #endif 31 32 /* tm_unz contain date/time info */ 33 typedef struct tm_unz_s 34 { 35 unsigned int tm_sec; /* seconds after the minute - [0,59] */ 36 unsigned int tm_min; /* minutes after the hour - [0,59] */ 37 unsigned int tm_hour; /* hours since midnight - [0,23] */ 38 unsigned int tm_mday; /* day of the month - [1,31] */ 39 unsigned int tm_mon; /* months since January - [0,11] */ 40 unsigned int tm_year; /* years - [1980..2044] */ 41 } tm_unz; 42 43 /* unz_global_info structure contain global data about the ZIPfile 44 These data comes from the end of central dir */ 45 typedef struct unz_global_info_s 46 { 47 unsigned long number_entry; /* total number of entries in the central dir on this disk */ 48 unsigned long size_comment; /* size of the global comment of the zipfile */ 49 } unz_global_info; 50 51 52 /* unz_file_info contain information about a file in the zipfile */ 53 typedef struct unz_file_info_s 54 { 55 unsigned long version; /* version made by 2 unsigned chars */ 56 unsigned long version_needed; /* version needed to extract 2 unsigned chars */ 57 unsigned long flag; /* general purpose bit flag 2 unsigned chars */ 58 unsigned long compression_method; /* compression method 2 unsigned chars */ 59 unsigned long dosDate; /* last mod file date in Dos fmt 4 unsigned chars */ 60 unsigned long crc; /* crc-32 4 unsigned chars */ 61 unsigned long compressed_size; /* compressed size 4 unsigned chars */ 62 unsigned long uncompressed_size; /* uncompressed size 4 unsigned chars */ 63 unsigned long size_filename; /* filename length 2 unsigned chars */ 64 unsigned long size_file_extra; /* extra field length 2 unsigned chars */ 65 unsigned long size_file_comment; /* file comment length 2 unsigned chars */ 66 67 unsigned long disk_num_start; /* disk number start 2 unsigned chars */ 68 unsigned long internal_fa; /* internal file attributes 2 unsigned chars */ 69 unsigned long external_fa; /* external file attributes 4 unsigned chars */ 70 71 tm_unz tmu_date; 72 } unz_file_info; 73 74 /* unz_file_info_interntal contain internal info about a file in zipfile*/ 75 typedef struct unz_file_info_internal_s 76 { 77 unsigned long offset_curfile;/* relative offset of static header 4 unsigned chars */ 78 } unz_file_info_internal; 79 80 typedef void* (*alloc_func) (void* opaque, unsigned int items, unsigned int size); 81 typedef void (*free_func) (void* opaque, void* address); 82 83 struct internal_state; 84 85 typedef struct z_stream_s { 86 unsigned char *next_in; /* next input unsigned char */ 87 unsigned int avail_in; /* number of unsigned chars available at next_in */ 88 unsigned long total_in; /* total nb of input unsigned chars read so */ 89 90 unsigned char *next_out; /* next output unsigned char should be put there */ 91 unsigned int avail_out; /* remaining free space at next_out */ 92 unsigned long total_out; /* total nb of unsigned chars output so */ 93 94 char *msg; /* last error message, NULL if no error */ 95 struct internal_state *state; /* not visible by applications */ 96 97 alloc_func zalloc; /* used to allocate the internal state */ 98 free_func zfree; /* used to free the internal state */ 99 unsigned char* opaque; /* private data object passed to zalloc and zfree */ 100 101 int data_type; /* best guess about the data type: ascii or binary */ 102 unsigned long adler; /* adler32 value of the uncompressed data */ 103 unsigned long reserved; /* reserved for future use */ 104 } z_stream; 105 106 typedef z_stream *z_streamp; 107 108 109 /* file_in_zip_read_info_s contain internal information about a file in zipfile, 110 when reading and decompress it */ 111 typedef struct 112 { 113 char *read_buffer; /* internal buffer for compressed data */ 114 z_stream stream; /* zLib stream structure for inflate */ 115 116 unsigned long pos_in_zipfile; /* position in unsigned char on the zipfile, for fseek*/ 117 unsigned long stream_initialised; /* flag set if stream structure is initialised*/ 118 119 unsigned long offset_local_extrafield;/* offset of the static extra field */ 120 unsigned int size_local_extrafield;/* size of the static extra field */ 121 unsigned long pos_local_extrafield; /* position in the static extra field in read*/ 122 123 unsigned long crc32; /* crc32 of all data uncompressed */ 124 unsigned long crc32_wait; /* crc32 we must obtain after decompress all */ 125 unsigned long rest_read_compressed; /* number of unsigned char to be decompressed */ 126 unsigned long rest_read_uncompressed;/*number of unsigned char to be obtained after decomp*/ 127 FILE* file; /* io structore of the zipfile */ 128 unsigned long compression_method; /* compression method (0==store) */ 129 unsigned long byte_before_the_zipfile;/* unsigned char before the zipfile, (>0 for sfx)*/ 130 } file_in_zip_read_info_s; 131 132 133 /* unz_s contain internal information about the zipfile 134 */ 135 typedef struct 136 { 137 FILE* file; /* io structore of the zipfile */ 138 unz_global_info gi; /* public global information */ 139 unsigned long byte_before_the_zipfile;/* unsigned char before the zipfile, (>0 for sfx)*/ 140 unsigned long num_file; /* number of the current file in the zipfile*/ 141 unsigned long pos_in_central_dir; /* pos of the current file in the central dir*/ 142 unsigned long current_file_ok; /* flag about the usability of the current file*/ 143 unsigned long central_pos; /* position of the beginning of the central dir*/ 144 145 unsigned long size_central_dir; /* size of the central directory */ 146 unsigned long offset_central_dir; /* offset of start of central directory with 147 respect to the starting disk number */ 148 149 unz_file_info cur_file_info; /* public info about the current file in zip*/ 150 unz_file_info_internal cur_file_info_internal; /* private info about it*/ 151 file_in_zip_read_info_s* pfile_in_zip_read; /* structure about the current 152 file if we are decompressing it */ 153 unsigned char* tmpFile; 154 int tmpPos,tmpSize; 155 } unz_s; 156 157 #define UNZ_OK (0) 158 #define UNZ_END_OF_LIST_OF_FILE (-100) 159 #define UNZ_ERRNO (Z_ERRNO) 160 #define UNZ_EOF (0) 161 #define UNZ_PARAMERROR (-102) 162 #define UNZ_BADZIPFILE (-103) 163 #define UNZ_INTERNALERROR (-104) 164 #define UNZ_CRCERROR (-105) 165 166 #define UNZ_CASESENSITIVE 1 167 #define UNZ_NOTCASESENSITIVE 2 168 #define UNZ_OSDEFAULTCASE 0 169 170 extern int unzStringFileNameCompare (const char* fileName1, const char* fileName2, int iCaseSensitivity); 171 172 /* 173 Compare two filename (fileName1,fileName2). 174 If iCaseSenisivity = 1, comparision is case sensitivity (like strcmp) 175 If iCaseSenisivity = 2, comparision is not case sensitivity (like strcmpi 176 or strcasecmp) 177 If iCaseSenisivity = 0, case sensitivity is defaut of your operating system 178 (like 1 on Unix, 2 on Windows) 179 */ 180 181 extern unzFile unzOpen (const char *path); 182 extern unzFile unzReOpen (const char* path, unzFile file); 183 184 /* 185 Open a Zip file. path contain the full pathname (by example, 186 on a Windows NT computer "c:\\zlib\\zlib111.zip" or on an Unix computer 187 "zlib/zlib111.zip". 188 If the zipfile cannot be opened (file don't exist or in not valid), the 189 return value is NULL. 190 Else, the return value is a unzFile Handle, usable with other function 191 of this unzip package. 192 */ 193 194 extern int unzClose (unzFile file); 195 196 /* 197 Close a ZipFile opened with unzipOpen. 198 If there is files inside the .Zip opened with unzOpenCurrentFile (see later), 199 these files MUST be closed with unzipCloseCurrentFile before call unzipClose. 200 return UNZ_OK if there is no problem. */ 201 202 extern int unzGetGlobalInfo (unzFile file, unz_global_info *pglobal_info); 203 204 /* 205 Write info about the ZipFile in the *pglobal_info structure. 206 No preparation of the structure is needed 207 return UNZ_OK if there is no problem. */ 208 209 210 extern int unzGetGlobalComment (unzFile file, char *szComment, unsigned long uSizeBuf); 211 212 /* 213 Get the global comment string of the ZipFile, in the szComment buffer. 214 uSizeBuf is the size of the szComment buffer. 215 return the number of unsigned char copied or an error code <0 216 */ 217 218 219 /***************************************************************************/ 220 /* Unzip package allow you browse the directory of the zipfile */ 221 222 extern int unzGoToFirstFile (unzFile file); 223 224 /* 225 Set the current file of the zipfile to the first file. 226 return UNZ_OK if there is no problem 227 */ 228 229 extern int unzGoToNextFile (unzFile file); 230 231 /* 232 Set the current file of the zipfile to the next file. 233 return UNZ_OK if there is no problem 234 return UNZ_END_OF_LIST_OF_FILE if the actual file was the latest. 235 */ 236 237 extern int unzGetCurrentFileInfoPosition (unzFile file, unsigned long *pos ); 238 239 /* 240 Get the position of the info of the current file in the zip. 241 return UNZ_OK if there is no problem 242 */ 243 244 extern int unzSetCurrentFileInfoPosition (unzFile file, unsigned long pos ); 245 246 /* 247 Set the position of the info of the current file in the zip. 248 return UNZ_OK if there is no problem 249 */ 250 251 extern int unzLocateFile (unzFile file, const char *szFileName, int iCaseSensitivity); 252 253 /* 254 Try locate the file szFileName in the zipfile. 255 For the iCaseSensitivity signification, see unzStringFileNameCompare 256 257 return value : 258 UNZ_OK if the file is found. It becomes the current file. 259 UNZ_END_OF_LIST_OF_FILE if the file is not found 260 */ 261 262 263 extern int unzGetCurrentFileInfo (unzFile file, unz_file_info *pfile_info, char *szFileName, unsigned long fileNameBufferSize, void *extraField, unsigned long extraFieldBufferSize, char *szComment, unsigned long commentBufferSize); 264 265 /* 266 Get Info about the current file 267 if pfile_info!=NULL, the *pfile_info structure will contain somes info about 268 the current file 269 if szFileName!=NULL, the filemane string will be copied in szFileName 270 (fileNameBufferSize is the size of the buffer) 271 if extraField!=NULL, the extra field information will be copied in extraField 272 (extraFieldBufferSize is the size of the buffer). 273 This is the Central-header version of the extra field 274 if szComment!=NULL, the comment string of the file will be copied in szComment 275 (commentBufferSize is the size of the buffer) 276 */ 277 278 /***************************************************************************/ 279 /* for reading the content of the current zipfile, you can open it, read data 280 from it, and close it (you can close it before reading all the file) 281 */ 282 283 extern int unzOpenCurrentFile (unzFile file); 284 285 /* 286 Open for reading data the current file in the zipfile. 287 If there is no error, the return value is UNZ_OK. 288 */ 289 290 extern int unzCloseCurrentFile (unzFile file); 291 292 /* 293 Close the file in zip opened with unzOpenCurrentFile 294 Return UNZ_CRCERROR if all the file was read but the CRC is not good 295 */ 296 297 298 extern int unzReadCurrentFile (unzFile file, void* buf, unsigned len); 299 300 /* 301 Read unsigned chars from the current file (opened by unzOpenCurrentFile) 302 buf contain buffer where data must be copied 303 len the size of buf. 304 305 return the number of unsigned char copied if somes unsigned chars are copied 306 return 0 if the end of file was reached 307 return <0 with error code if there is an error 308 (UNZ_ERRNO for IO error, or zLib error for uncompress error) 309 */ 310 311 extern long unztell(unzFile file); 312 313 /* 314 Give the current position in uncompressed data 315 */ 316 317 extern int unzeof (unzFile file); 318 319 /* 320 return 1 if the end of file was reached, 0 elsewhere 321 */ 322 323 extern int unzGetLocalExtrafield (unzFile file, void* buf, unsigned len); 324 325 /* 326 Read extra field from the current file (opened by unzOpenCurrentFile) 327 This is the local-header version of the extra field (sometimes, there is 328 more info in the local-header version than in the central-header) 329 330 if buf==NULL, it return the size of the local extra field 331 332 if buf!=NULL, len is the size of the buffer, the extra header is copied in 333 buf. 334 the return value is the number of unsigned chars copied in buf, or (if <0) 335 the error code 336 */ 337