1 2 /*-------------------------------------------------------------*/ 3 /*--- Public header file for the library. ---*/ 4 /*--- bzlib.h ---*/ 5 /*-------------------------------------------------------------*/ 6 7 /*-- 8 This file is a part of bzip2 and/or libbzip2, a program and 9 library for lossless, block-sorting data compression. 10 11 Copyright (C) 1996-2000 Julian R Seward. All rights reserved. 12 13 Redistribution and use in source and binary forms, with or without 14 modification, are permitted provided that the following conditions 15 are met: 16 17 1. Redistributions of source code must retain the above copyright 18 notice, this list of conditions and the following disclaimer. 19 20 2. The origin of this software must not be misrepresented; you must 21 not claim that you wrote the original software. If you use this 22 software in a product, an acknowledgment in the product 23 documentation would be appreciated but is not required. 24 25 3. Altered source versions must be plainly marked as such, and must 26 not be misrepresented as being the original software. 27 28 4. The name of the author may not be used to endorse or promote 29 products derived from this software without specific prior written 30 permission. 31 32 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 33 OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 34 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 35 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 36 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 38 GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 39 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 40 WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 41 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 42 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 43 44 Julian Seward, Cambridge, UK. 45 jseward@acm.org 46 bzip2/libbzip2 version 1.0 of 21 March 2000 47 48 This program is based on (at least) the work of: 49 Mike Burrows 50 David Wheeler 51 Peter Fenwick 52 Alistair Moffat 53 Radford Neal 54 Ian H. Witten 55 Robert Sedgewick 56 Jon L. Bentley 57 58 For more information on these sources, see the manual. 59 --*/ 60 61 62 #ifndef _BZLIB_H 63 #define _BZLIB_H 64 65 #ifdef __cplusplus 66 extern "C" { 67 #endif 68 69 #define BZ_RUN 0 70 #define BZ_FLUSH 1 71 #define BZ_FINISH 2 72 73 #define BZ_OK 0 74 #define BZ_RUN_OK 1 75 #define BZ_FLUSH_OK 2 76 #define BZ_FINISH_OK 3 77 #define BZ_STREAM_END 4 78 #define BZ_SEQUENCE_ERROR (-1) 79 #define BZ_PARAM_ERROR (-2) 80 #define BZ_MEM_ERROR (-3) 81 #define BZ_DATA_ERROR (-4) 82 #define BZ_DATA_ERROR_MAGIC (-5) 83 #define BZ_IO_ERROR (-6) 84 #define BZ_UNEXPECTED_EOF (-7) 85 #define BZ_OUTBUFF_FULL (-8) 86 #define BZ_CONFIG_ERROR (-9) 87 88 typedef 89 struct { 90 char *next_in; 91 unsigned int avail_in; 92 unsigned int total_in_lo32; 93 unsigned int total_in_hi32; 94 95 char *next_out; 96 unsigned int avail_out; 97 unsigned int total_out_lo32; 98 unsigned int total_out_hi32; 99 100 void *state; 101 102 void *(*bzalloc)(void *,int,int); 103 void (*bzfree)(void *,void *); 104 void *opaque; 105 } 106 bz_stream; 107 108 109 #ifndef BZ_IMPORT 110 #define BZ_EXPORT 111 #endif 112 113 #ifdef _WIN32 114 # include <stdio.h> 115 # include <windows.h> 116 # ifdef small 117 /* windows.h define small to char */ 118 # undef small 119 # endif 120 # ifdef BZ_EXPORT 121 # define BZ_API(func) WINAPI func 122 # define BZ_EXTERN extern 123 # else 124 /* import windows dll dynamically */ 125 # define BZ_API(func) (WINAPI * func) 126 # define BZ_EXTERN 127 # endif 128 #else 129 # define BZ_API(func) func 130 # define BZ_EXTERN extern 131 #endif 132 133 134 /*-- Core (low-level) library functions --*/ 135 136 BZ_EXTERN int BZ_API(BZ2_bzCompressInit) ( 137 bz_stream* strm, 138 int blockSize100k, 139 int verbosity, 140 int workFactor 141 ); 142 143 BZ_EXTERN int BZ_API(BZ2_bzCompress) ( 144 bz_stream* strm, 145 int action 146 ); 147 148 BZ_EXTERN int BZ_API(BZ2_bzCompressEnd) ( 149 bz_stream* strm 150 ); 151 152 BZ_EXTERN int BZ_API(BZ2_bzDecompressInit) ( 153 bz_stream *strm, 154 int verbosity, 155 int small 156 ); 157 158 BZ_EXTERN int BZ_API(BZ2_bzDecompress) ( 159 bz_stream* strm 160 ); 161 162 BZ_EXTERN int BZ_API(BZ2_bzDecompressEnd) ( 163 bz_stream *strm 164 ); 165 166 167 168 /*-- High(er) level library functions --*/ 169 170 #ifndef BZ_NO_STDIO 171 #define BZ_MAX_UNUSED 5000 172 173 typedef void BZFILE; 174 175 BZ_EXTERN BZFILE* BZ_API(BZ2_bzReadOpen) ( 176 int* bzerror, 177 FILE* f, 178 int verbosity, 179 int small, 180 void* unused, 181 int nUnused 182 ); 183 184 BZ_EXTERN void BZ_API(BZ2_bzReadClose) ( 185 int* bzerror, 186 BZFILE* b 187 ); 188 189 BZ_EXTERN void BZ_API(BZ2_bzReadGetUnused) ( 190 int* bzerror, 191 BZFILE* b, 192 void** unused, 193 int* nUnused 194 ); 195 196 BZ_EXTERN int BZ_API(BZ2_bzRead) ( 197 int* bzerror, 198 BZFILE* b, 199 void* buf, 200 int len 201 ); 202 203 BZ_EXTERN BZFILE* BZ_API(BZ2_bzWriteOpen) ( 204 int* bzerror, 205 FILE* f, 206 int blockSize100k, 207 int verbosity, 208 int workFactor 209 ); 210 211 BZ_EXTERN void BZ_API(BZ2_bzWrite) ( 212 int* bzerror, 213 BZFILE* b, 214 void* buf, 215 int len 216 ); 217 218 BZ_EXTERN void BZ_API(BZ2_bzWriteClose) ( 219 int* bzerror, 220 BZFILE* b, 221 int abandon, 222 unsigned int* nbytes_in, 223 unsigned int* nbytes_out 224 ); 225 226 BZ_EXTERN void BZ_API(BZ2_bzWriteClose64) ( 227 int* bzerror, 228 BZFILE* b, 229 int abandon, 230 unsigned int* nbytes_in_lo32, 231 unsigned int* nbytes_in_hi32, 232 unsigned int* nbytes_out_lo32, 233 unsigned int* nbytes_out_hi32 234 ); 235 #endif 236 237 238 /*-- Utility functions --*/ 239 240 BZ_EXTERN int BZ_API(BZ2_bzBuffToBuffCompress) ( 241 char* dest, 242 unsigned int* destLen, 243 char* source, 244 unsigned int sourceLen, 245 int blockSize100k, 246 int verbosity, 247 int workFactor 248 ); 249 250 BZ_EXTERN int BZ_API(BZ2_bzBuffToBuffDecompress) ( 251 char* dest, 252 unsigned int* destLen, 253 char* source, 254 unsigned int sourceLen, 255 int small, 256 int verbosity 257 ); 258 259 260 /*-- 261 Code contributed by Yoshioka Tsuneo 262 (QWF00133@niftyserve.or.jp/tsuneo-y@is.aist-nara.ac.jp), 263 to support better zlib compatibility. 264 This code is not _officially_ part of libbzip2 (yet); 265 I haven't tested it, documented it, or considered the 266 threading-safeness of it. 267 If this code breaks, please contact both Yoshioka and me. 268 --*/ 269 270 BZ_EXTERN const char * BZ_API(BZ2_bzlibVersion) ( 271 void 272 ); 273 274 #ifndef BZ_NO_STDIO 275 BZ_EXTERN BZFILE * BZ_API(BZ2_bzopen) ( 276 const char *path, 277 const char *mode 278 ); 279 280 BZ_EXTERN BZFILE * BZ_API(BZ2_bzdopen) ( 281 int fd, 282 const char *mode 283 ); 284 285 BZ_EXTERN int BZ_API(BZ2_bzread) ( 286 BZFILE* b, 287 void* buf, 288 int len 289 ); 290 291 BZ_EXTERN int BZ_API(BZ2_bzwrite) ( 292 BZFILE* b, 293 void* buf, 294 int len 295 ); 296 297 BZ_EXTERN int BZ_API(BZ2_bzflush) ( 298 BZFILE* b 299 ); 300 301 BZ_EXTERN void BZ_API(BZ2_bzclose) ( 302 BZFILE* b 303 ); 304 305 BZ_EXTERN const char * BZ_API(BZ2_bzerror) ( 306 BZFILE *b, 307 int *errnum 308 ); 309 #endif 310 311 #ifdef __cplusplus 312 } 313 #endif 314 315 #endif 316 317 /*-------------------------------------------------------------*/ 318 /*--- end bzlib.h ---*/ 319 /*-------------------------------------------------------------*/ 320