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---
bzlib.h (7861B)
---
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) 1996-2005 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@bzip.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 #ifndef BZ_NO_STDIO
114 /* Need a definitition for FILE */
115 #include <stdio.h>
116 #endif
117
118 #ifdef _WIN32
119 # include <windows.h>
120 # ifdef small
121 /* windows.h define small to char */
122 # undef small
123 # endif
124 # ifdef BZ_EXPORT
125 # define BZ_API(func) WINAPI func
126 # define BZ_EXTERN extern
127 # else
128 /* import windows dll dynamically */
129 # define BZ_API(func) (WINAPI * func)
130 # define BZ_EXTERN
131 # endif
132 #else
133 # define BZ_API(func) func
134 # define BZ_EXTERN extern
135 #endif
136
137
138 /*-- Core (low-level) library functions --*/
139
140 BZ_EXTERN int BZ_API(BZ2_bzCompressInit) (
141 bz_stream* strm,
142 int blockSize100k,
143 int verbosity,
144 int workFactor
145 );
146
147 BZ_EXTERN int BZ_API(BZ2_bzCompress) (
148 bz_stream* strm,
149 int action
150 );
151
152 BZ_EXTERN int BZ_API(BZ2_bzCompressEnd) (
153 bz_stream* strm
154 );
155
156 BZ_EXTERN int BZ_API(BZ2_bzDecompressInit) (
157 bz_stream *strm,
158 int verbosity,
159 int small
160 );
161
162 BZ_EXTERN int BZ_API(BZ2_bzDecompress) (
163 bz_stream* strm
164 );
165
166 BZ_EXTERN int BZ_API(BZ2_bzDecompressEnd) (
167 bz_stream *strm
168 );
169
170
171
172 /*-- High(er) level library functions --*/
173
174 #ifndef BZ_NO_STDIO
175 #define BZ_MAX_UNUSED 5000
176
177 typedef void BZFILE;
178
179 BZ_EXTERN BZFILE* BZ_API(BZ2_bzReadOpen) (
180 int* bzerror,
181 FILE* f,
182 int verbosity,
183 int small,
184 void* unused,
185 int nUnused
186 );
187
188 BZ_EXTERN void BZ_API(BZ2_bzReadClose) (
189 int* bzerror,
190 BZFILE* b
191 );
192
193 BZ_EXTERN void BZ_API(BZ2_bzReadGetUnused) (
194 int* bzerror,
195 BZFILE* b,
196 void** unused,
197 int* nUnused
198 );
199
200 BZ_EXTERN int BZ_API(BZ2_bzRead) (
201 int* bzerror,
202 BZFILE* b,
203 void* buf,
204 int len
205 );
206
207 BZ_EXTERN BZFILE* BZ_API(BZ2_bzWriteOpen) (
208 int* bzerror,
209 FILE* f,
210 int blockSize100k,
211 int verbosity,
212 int workFactor
213 );
214
215 BZ_EXTERN void BZ_API(BZ2_bzWrite) (
216 int* bzerror,
217 BZFILE* b,
218 void* buf,
219 int len
220 );
221
222 BZ_EXTERN void BZ_API(BZ2_bzWriteClose) (
223 int* bzerror,
224 BZFILE* b,
225 int abandon,
226 unsigned int* nbytes_in,
227 unsigned int* nbytes_out
228 );
229
230 BZ_EXTERN void BZ_API(BZ2_bzWriteClose64) (
231 int* bzerror,
232 BZFILE* b,
233 int abandon,
234 unsigned int* nbytes_in_lo32,
235 unsigned int* nbytes_in_hi32,
236 unsigned int* nbytes_out_lo32,
237 unsigned int* nbytes_out_hi32
238 );
239 #endif
240
241
242 /*-- Utility functions --*/
243
244 BZ_EXTERN int BZ_API(BZ2_bzBuffToBuffCompress) (
245 char* dest,
246 unsigned int* destLen,
247 char* source,
248 unsigned int sourceLen,
249 int blockSize100k,
250 int verbosity,
251 int workFactor
252 );
253
254 BZ_EXTERN int BZ_API(BZ2_bzBuffToBuffDecompress) (
255 char* dest,
256 unsigned int* destLen,
257 char* source,
258 unsigned int sourceLen,
259 int small,
260 int verbosity
261 );
262
263
264 /*--
265 Code contributed by Yoshioka Tsuneo
266 (QWF00133@niftyserve.or.jp/tsuneo-y@is.aist-nara.ac.jp),
267 to support better zlib compatibility.
268 This code is not _officially_ part of libbzip2 (yet);
269 I haven't tested it, documented it, or considered the
270 threading-safeness of it.
271 If this code breaks, please contact both Yoshioka and me.
272 --*/
273
274 BZ_EXTERN const char * BZ_API(BZ2_bzlibVersion) (
275 void
276 );
277
278 #ifndef BZ_NO_STDIO
279 BZ_EXTERN BZFILE * BZ_API(BZ2_bzopen) (
280 const char *path,
281 const char *mode
282 );
283
284 BZ_EXTERN BZFILE * BZ_API(BZ2_bzdopen) (
285 int fd,
286 const char *mode
287 );
288
289 BZ_EXTERN int BZ_API(BZ2_bzread) (
290 BZFILE* b,
291 void* buf,
292 int len
293 );
294
295 BZ_EXTERN int BZ_API(BZ2_bzwrite) (
296 BZFILE* b,
297 void* buf,
298 int len
299 );
300
301 BZ_EXTERN int BZ_API(BZ2_bzflush) (
302 BZFILE* b
303 );
304
305 BZ_EXTERN void BZ_API(BZ2_bzclose) (
306 BZFILE* b
307 );
308
309 BZ_EXTERN const char * BZ_API(BZ2_bzerror) (
310 BZFILE *b,
311 int *errnum
312 );
313 #endif
314
315 #ifdef __cplusplus
316 }
317 #endif
318
319 #endif
320
321 /*-------------------------------------------------------------*/
322 /*--- end bzlib.h ---*/
323 /*-------------------------------------------------------------*/