tbzlib_stdio.h - plan9port - [fork] Plan 9 from user space
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---
tbzlib_stdio.h (4971B)
---
1 /*
2 * THIS FILE IS NOT IDENTICAL TO THE ORIGINAL
3 * FROM THE BZIP2 DISTRIBUTION.
4 *
5 * It has been modified, mainly to break the library
6 * into smaller pieces.
7 *
8 * Russ Cox
9 * rsc@plan9.bell-labs.com
10 * July 2000
11 */
12
13 /*-------------------------------------------------------------*/
14 /*--- Library top-level functions. ---*/
15 /*--- bzlib.c ---*/
16 /*-------------------------------------------------------------*/
17
18 /*--
19 This file is a part of bzip2 and/or libbzip2, a program and
20 library for lossless, block-sorting data compression.
21
22 Copyright (C) 1996-2000 Julian R Seward. All rights reserved.
23
24 Redistribution and use in source and binary forms, with or without
25 modification, are permitted provided that the following conditions
26 are met:
27
28 1. Redistributions of source code must retain the above copyright
29 notice, this list of conditions and the following disclaimer.
30
31 2. The origin of this software must not be misrepresented; you must
32 not claim that you wrote the original software. If you use this
33 software in a product, an acknowledgment in the product
34 documentation would be appreciated but is not required.
35
36 3. Altered source versions must be plainly marked as such, and must
37 not be misrepresented as being the original software.
38
39 4. The name of the author may not be used to endorse or promote
40 products derived from this software without specific prior written
41 permission.
42
43 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
44 OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
45 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
46 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
47 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
48 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
49 GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
50 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
51 WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
52 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
53 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
54
55 Julian Seward, Cambridge, UK.
56 jseward@acm.org
57 bzip2/libbzip2 version 1.0 of 21 March 2000
58
59 This program is based on (at least) the work of:
60 Mike Burrows
61 David Wheeler
62 Peter Fenwick
63 Alistair Moffat
64 Radford Neal
65 Ian H. Witten
66 Robert Sedgewick
67 Jon L. Bentley
68
69 For more information on these sources, see the manual.
70 --*/
71
72 /*--
73 CHANGES
74 ~~~~~~~
75 0.9.0 -- original version.
76
77 0.9.0a/b -- no changes in this file.
78
79 0.9.0c
80 * made zero-length BZ_FLUSH work correctly in bzCompress().
81 * fixed bzWrite/bzRead to ignore zero-length requests.
82 * fixed bzread to correctly handle read requests after EOF.
83 * wrong parameter order in call to bzDecompressInit in
84 bzBuffToBuffDecompress. Fixed.
85 --*/
86
87 #include <stdio.h>
88
89 #define BZ_MAX_UNUSED 5000
90
91 typedef void BZFILE;
92
93 BZ_EXTERN BZFILE * BZ_API(BZ2_bzopen) (
94 const char *path,
95 const char *mode
96 );
97
98 BZ_EXTERN BZFILE * BZ_API(BZ2_bzdopen) (
99 int fd,
100 const char *mode
101 );
102
103 BZ_EXTERN int BZ_API(BZ2_bzread) (
104 BZFILE* b,
105 void* buf,
106 int len
107 );
108
109 BZ_EXTERN int BZ_API(BZ2_bzwrite) (
110 BZFILE* b,
111 void* buf,
112 int len
113 );
114
115 BZ_EXTERN int BZ_API(BZ2_bzflush) (
116 BZFILE* b
117 );
118
119 BZ_EXTERN void BZ_API(BZ2_bzclose) (
120 BZFILE* b
121 );
122
123 BZ_EXTERN const char * BZ_API(BZ2_bzerror) (
124 BZFILE *b,
125 int *errnum
126 );
127
128
129 /*-- High(er) level library functions --*/
130 BZ_EXTERN BZFILE* BZ_API(BZ2_bzReadOpen) (
131 int* bzerror,
132 FILE* f,
133 int verbosity,
134 int small,
135 void* unused,
136 int nUnused
137 );
138
139 BZ_EXTERN void BZ_API(BZ2_bzReadClose) (
140 int* bzerror,
141 BZFILE* b
142 );
143
144 BZ_EXTERN void BZ_API(BZ2_bzReadGetUnused) (
145 int* bzerror,
146 BZFILE* b,
147 void** unused,
148 int* nUnused
149 );
150
151 BZ_EXTERN int BZ_API(BZ2_bzRead) (
152 int* bzerror,
153 BZFILE* b,
154 void* buf,
155 int len
156 );
157
158 BZ_EXTERN BZFILE* BZ_API(BZ2_bzWriteOpen) (
159 int* bzerror,
160 FILE* f,
161 int blockSize100k,
162 int verbosity,
163 int workFactor
164 );
165
166 BZ_EXTERN void BZ_API(BZ2_bzWrite) (
167 int* bzerror,
168 BZFILE* b,
169 void* buf,
170 int len
171 );
172
173 BZ_EXTERN void BZ_API(BZ2_bzWriteClose) (
174 int* bzerror,
175 BZFILE* b,
176 int abandon,
177 unsigned int* nbytes_in,
178 unsigned int* nbytes_out
179 );
180
181 BZ_EXTERN void BZ_API(BZ2_bzWriteClose64) (
182 int* bzerror,
183 BZFILE* b,
184 int abandon,
185 unsigned int* nbytes_in_lo32,
186 unsigned int* nbytes_in_hi32,
187 unsigned int* nbytes_out_lo32,
188 unsigned int* nbytes_out_hi32
189 );