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Date:: Fri Jan 10 14:54:30 2020 UTC
Message:: Trivial changes: whitespace and modes. Remote whitespace at the ends of lines. Remove blank lines from the ends of files. Change modes on source files so that they are not executable. Signed-off-by: Dan Cross <cross@gajendra.net>
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  1 ff3adf60 2004-04-14 devnull /*
  2 ff3adf60 2004-04-14 devnull  * THIS FILE IS NOT IDENTICAL TO THE ORIGINAL
  3 ff3adf60 2004-04-14 devnull  * FROM THE BZIP2 DISTRIBUTION.
  4 ff3adf60 2004-04-14 devnull  *
  5 ff3adf60 2004-04-14 devnull  * It has been modified, mainly to break the library
  6 ff3adf60 2004-04-14 devnull  * into smaller pieces.
  7 ff3adf60 2004-04-14 devnull  *
  8 ff3adf60 2004-04-14 devnull  * Russ Cox
  9 ff3adf60 2004-04-14 devnull  * rsc@plan9.bell-labs.com
 10 ff3adf60 2004-04-14 devnull  * July 2000
 11 ff3adf60 2004-04-14 devnull  */
 12 ff3adf60 2004-04-14 devnull 
 13 ff3adf60 2004-04-14 devnull /*-------------------------------------------------------------*/
 14 ff3adf60 2004-04-14 devnull /*--- Library top-level functions.                          ---*/
 15 ff3adf60 2004-04-14 devnull /*---                                               bzlib.c ---*/
 16 ff3adf60 2004-04-14 devnull /*-------------------------------------------------------------*/
 17 ff3adf60 2004-04-14 devnull 
 18 ff3adf60 2004-04-14 devnull /*--
 19 ff3adf60 2004-04-14 devnull   This file is a part of bzip2 and/or libbzip2, a program and
 20 ff3adf60 2004-04-14 devnull   library for lossless, block-sorting data compression.
 21 ff3adf60 2004-04-14 devnull 
 22 ff3adf60 2004-04-14 devnull   Copyright (C) 1996-2000 Julian R Seward.  All rights reserved.
 23 ff3adf60 2004-04-14 devnull 
 24 ff3adf60 2004-04-14 devnull   Redistribution and use in source and binary forms, with or without
 25 ff3adf60 2004-04-14 devnull   modification, are permitted provided that the following conditions
 26 ff3adf60 2004-04-14 devnull   are met:
 27 ff3adf60 2004-04-14 devnull 
 28 ff3adf60 2004-04-14 devnull   1. Redistributions of source code must retain the above copyright
 29 ff3adf60 2004-04-14 devnull      notice, this list of conditions and the following disclaimer.
 30 ff3adf60 2004-04-14 devnull 
 31 fa325e9b 2020-01-10 cross   2. The origin of this software must not be misrepresented; you must
 32 fa325e9b 2020-01-10 cross      not claim that you wrote the original software.  If you use this
 33 fa325e9b 2020-01-10 cross      software in a product, an acknowledgment in the product
 34 ff3adf60 2004-04-14 devnull      documentation would be appreciated but is not required.
 35 ff3adf60 2004-04-14 devnull 
 36 ff3adf60 2004-04-14 devnull   3. Altered source versions must be plainly marked as such, and must
 37 ff3adf60 2004-04-14 devnull      not be misrepresented as being the original software.
 38 ff3adf60 2004-04-14 devnull 
 39 fa325e9b 2020-01-10 cross   4. The name of the author may not be used to endorse or promote
 40 fa325e9b 2020-01-10 cross      products derived from this software without specific prior written
 41 ff3adf60 2004-04-14 devnull      permission.
 42 ff3adf60 2004-04-14 devnull 
 43 ff3adf60 2004-04-14 devnull   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
 44 ff3adf60 2004-04-14 devnull   OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 45 ff3adf60 2004-04-14 devnull   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 46 ff3adf60 2004-04-14 devnull   ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 47 ff3adf60 2004-04-14 devnull   DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 48 ff3adf60 2004-04-14 devnull   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 49 ff3adf60 2004-04-14 devnull   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 50 ff3adf60 2004-04-14 devnull   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 51 ff3adf60 2004-04-14 devnull   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 52 ff3adf60 2004-04-14 devnull   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 53 ff3adf60 2004-04-14 devnull   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 54 ff3adf60 2004-04-14 devnull 
 55 ff3adf60 2004-04-14 devnull   Julian Seward, Cambridge, UK.
 56 ff3adf60 2004-04-14 devnull   jseward@acm.org
 57 ff3adf60 2004-04-14 devnull   bzip2/libbzip2 version 1.0 of 21 March 2000
 58 ff3adf60 2004-04-14 devnull 
 59 ff3adf60 2004-04-14 devnull   This program is based on (at least) the work of:
 60 ff3adf60 2004-04-14 devnull      Mike Burrows
 61 ff3adf60 2004-04-14 devnull      David Wheeler
 62 ff3adf60 2004-04-14 devnull      Peter Fenwick
 63 ff3adf60 2004-04-14 devnull      Alistair Moffat
 64 ff3adf60 2004-04-14 devnull      Radford Neal
 65 ff3adf60 2004-04-14 devnull      Ian H. Witten
 66 ff3adf60 2004-04-14 devnull      Robert Sedgewick
 67 ff3adf60 2004-04-14 devnull      Jon L. Bentley
 68 ff3adf60 2004-04-14 devnull 
 69 ff3adf60 2004-04-14 devnull   For more information on these sources, see the manual.
 70 ff3adf60 2004-04-14 devnull --*/
 71 ff3adf60 2004-04-14 devnull 
 72 ff3adf60 2004-04-14 devnull /*--
 73 ff3adf60 2004-04-14 devnull    CHANGES
 74 ff3adf60 2004-04-14 devnull    ~~~~~~~
 75 ff3adf60 2004-04-14 devnull    0.9.0 -- original version.
 76 ff3adf60 2004-04-14 devnull 
 77 ff3adf60 2004-04-14 devnull    0.9.0a/b -- no changes in this file.
 78 ff3adf60 2004-04-14 devnull 
 79 ff3adf60 2004-04-14 devnull    0.9.0c
 80 ff3adf60 2004-04-14 devnull       * made zero-length BZ_FLUSH work correctly in bzCompress().
 81 ff3adf60 2004-04-14 devnull       * fixed bzWrite/bzRead to ignore zero-length requests.
 82 ff3adf60 2004-04-14 devnull       * fixed bzread to correctly handle read requests after EOF.
 83 ff3adf60 2004-04-14 devnull       * wrong parameter order in call to bzDecompressInit in
 84 ff3adf60 2004-04-14 devnull         bzBuffToBuffDecompress.  Fixed.
 85 ff3adf60 2004-04-14 devnull --*/
 86 ff3adf60 2004-04-14 devnull 
 87 ff3adf60 2004-04-14 devnull #include "os.h"
 88 ff3adf60 2004-04-14 devnull #include "bzlib.h"
 89 ff3adf60 2004-04-14 devnull #include "bzlib_private.h"
 90 ff3adf60 2004-04-14 devnull #include "bzlib_stdio.h"
 91 ff3adf60 2004-04-14 devnull #include "bzlib_stdio_private.h"
 92 ff3adf60 2004-04-14 devnull 
 93 ff3adf60 2004-04-14 devnull /*---------------------------------------------------*/
 94 ff3adf60 2004-04-14 devnull /*--
 95 ff3adf60 2004-04-14 devnull    Code contributed by Yoshioka Tsuneo
 96 ff3adf60 2004-04-14 devnull    (QWF00133@niftyserve.or.jp/tsuneo-y@is.aist-nara.ac.jp),
 97 ff3adf60 2004-04-14 devnull    to support better zlib compatibility.
 98 ff3adf60 2004-04-14 devnull    This code is not _officially_ part of libbzip2 (yet);
 99 ff3adf60 2004-04-14 devnull    I haven't tested it, documented it, or considered the
100 ff3adf60 2004-04-14 devnull    threading-safeness of it.
101 ff3adf60 2004-04-14 devnull    If this code breaks, please contact both Yoshioka and me.
102 ff3adf60 2004-04-14 devnull --*/
103 ff3adf60 2004-04-14 devnull /*---------------------------------------------------*/
104 ff3adf60 2004-04-14 devnull 
105 ff3adf60 2004-04-14 devnull /*---------------------------------------------------*/
106 ff3adf60 2004-04-14 devnull 
107 ff3adf60 2004-04-14 devnull #if defined(_WIN32) || defined(OS2) || defined(MSDOS)
108 ff3adf60 2004-04-14 devnull #   include <fcntl.h>
109 ff3adf60 2004-04-14 devnull #   include <io.h>
110 ff3adf60 2004-04-14 devnull #   define SET_BINARY_MODE(file) setmode(fileno(file),O_BINARY)
111 ff3adf60 2004-04-14 devnull #else
112 ff3adf60 2004-04-14 devnull #   define SET_BINARY_MODE(file)
113 ff3adf60 2004-04-14 devnull #endif
114 ff3adf60 2004-04-14 devnull static
115 ff3adf60 2004-04-14 devnull BZFILE * bzopen_or_bzdopen
116 ff3adf60 2004-04-14 devnull                ( const char *path,   /* no use when bzdopen */
117 ff3adf60 2004-04-14 devnull                  int fd,             /* no use when bzdopen */
118 ff3adf60 2004-04-14 devnull                  const char *mode,
119 ff3adf60 2004-04-14 devnull                  int open_mode)      /* bzopen: 0, bzdopen:1 */
120 ff3adf60 2004-04-14 devnull {
121 ff3adf60 2004-04-14 devnull    int    bzerr;
122 ff3adf60 2004-04-14 devnull    char   unused[BZ_MAX_UNUSED];
123 ff3adf60 2004-04-14 devnull    int    blockSize100k = 9;
124 ff3adf60 2004-04-14 devnull    int    writing       = 0;
125 ff3adf60 2004-04-14 devnull    char   mode2[10]     = "";
126 ff3adf60 2004-04-14 devnull    FILE   *fp           = NULL;
127 ff3adf60 2004-04-14 devnull    BZFILE *bzfp         = NULL;
128 ff3adf60 2004-04-14 devnull    int    verbosity     = 0;
129 ff3adf60 2004-04-14 devnull    int    workFactor    = 30;
130 ff3adf60 2004-04-14 devnull    int    smallMode     = 0;
131 fa325e9b 2020-01-10 cross    int    nUnused       = 0;
132 ff3adf60 2004-04-14 devnull 
133 ff3adf60 2004-04-14 devnull    if (mode == NULL) return NULL;
134 ff3adf60 2004-04-14 devnull    while (*mode) {
135 ff3adf60 2004-04-14 devnull       switch (*mode) {
136 ff3adf60 2004-04-14 devnull       case 'r':
137 ff3adf60 2004-04-14 devnull          writing = 0; break;
138 ff3adf60 2004-04-14 devnull       case 'w':
139 ff3adf60 2004-04-14 devnull          writing = 1; break;
140 ff3adf60 2004-04-14 devnull       case 's':
141 ff3adf60 2004-04-14 devnull          smallMode = 1; break;
142 ff3adf60 2004-04-14 devnull       default:
143 ff3adf60 2004-04-14 devnull          if (isdigit((int)(*mode))) {
144 ff3adf60 2004-04-14 devnull             blockSize100k = *mode-'0';
145 ff3adf60 2004-04-14 devnull          }
146 ff3adf60 2004-04-14 devnull       }
147 ff3adf60 2004-04-14 devnull       mode++;
148 ff3adf60 2004-04-14 devnull    }
149 ff3adf60 2004-04-14 devnull    strcat(mode2, writing ? "w" : "r" );
150 ff3adf60 2004-04-14 devnull    strcat(mode2,"b");   /* binary mode */
151 ff3adf60 2004-04-14 devnull 
152 ff3adf60 2004-04-14 devnull    if (open_mode==0) {
153 ff3adf60 2004-04-14 devnull       if (path==NULL || strcmp(path,"")==0) {
154 ff3adf60 2004-04-14 devnull         fp = (writing ? stdout : stdin);
155 ff3adf60 2004-04-14 devnull         SET_BINARY_MODE(fp);
156 ff3adf60 2004-04-14 devnull       } else {
157 ff3adf60 2004-04-14 devnull         fp = fopen(path,mode2);
158 ff3adf60 2004-04-14 devnull       }
159 ff3adf60 2004-04-14 devnull    } else {
160 ff3adf60 2004-04-14 devnull #ifdef BZ_STRICT_ANSI
161 ff3adf60 2004-04-14 devnull       fp = NULL;
162 ff3adf60 2004-04-14 devnull #else
163 ff3adf60 2004-04-14 devnull       fp = fdopen(fd,mode2);
164 ff3adf60 2004-04-14 devnull #endif
165 ff3adf60 2004-04-14 devnull    }
166 ff3adf60 2004-04-14 devnull    if (fp == NULL) return NULL;
167 ff3adf60 2004-04-14 devnull 
168 ff3adf60 2004-04-14 devnull    if (writing) {
169 ff3adf60 2004-04-14 devnull       /* Guard against total chaos and anarchy -- JRS */
170 ff3adf60 2004-04-14 devnull       if (blockSize100k < 1) blockSize100k = 1;
171 fa325e9b 2020-01-10 cross       if (blockSize100k > 9) blockSize100k = 9;
172 ff3adf60 2004-04-14 devnull       bzfp = BZ2_bzWriteOpen(&bzerr,fp,blockSize100k,
173 ff3adf60 2004-04-14 devnull                              verbosity,workFactor);
174 ff3adf60 2004-04-14 devnull    } else {
175 ff3adf60 2004-04-14 devnull       bzfp = BZ2_bzReadOpen(&bzerr,fp,verbosity,smallMode,
176 ff3adf60 2004-04-14 devnull                             unused,nUnused);
177 ff3adf60 2004-04-14 devnull    }
178 ff3adf60 2004-04-14 devnull    if (bzfp == NULL) {
179 ff3adf60 2004-04-14 devnull       if (fp != stdin && fp != stdout) fclose(fp);
180 ff3adf60 2004-04-14 devnull       return NULL;
181 ff3adf60 2004-04-14 devnull    }
182 ff3adf60 2004-04-14 devnull    return bzfp;
183 ff3adf60 2004-04-14 devnull }
184 ff3adf60 2004-04-14 devnull 
185 ff3adf60 2004-04-14 devnull 
186 ff3adf60 2004-04-14 devnull /*---------------------------------------------------*/
187 ff3adf60 2004-04-14 devnull /*--
188 ff3adf60 2004-04-14 devnull    open file for read or write.
189 ff3adf60 2004-04-14 devnull       ex) bzopen("file","w9")
190 ff3adf60 2004-04-14 devnull       case path="" or NULL => use stdin or stdout.
191 ff3adf60 2004-04-14 devnull --*/
192 ff3adf60 2004-04-14 devnull BZFILE * BZ_API(BZ2_bzopen)
193 ff3adf60 2004-04-14 devnull                ( const char *path,
194 ff3adf60 2004-04-14 devnull                  const char *mode )
195 ff3adf60 2004-04-14 devnull {
196 ff3adf60 2004-04-14 devnull    return bzopen_or_bzdopen(path,-1,mode,/*bzopen*/0);
197 ff3adf60 2004-04-14 devnull }
198 ff3adf60 2004-04-14 devnull 
199 ff3adf60 2004-04-14 devnull 
200 ff3adf60 2004-04-14 devnull /*---------------------------------------------------*/
201 ff3adf60 2004-04-14 devnull BZFILE * BZ_API(BZ2_bzdopen)
202 ff3adf60 2004-04-14 devnull                ( int fd,
203 ff3adf60 2004-04-14 devnull                  const char *mode )
204 ff3adf60 2004-04-14 devnull {
205 ff3adf60 2004-04-14 devnull    return bzopen_or_bzdopen(NULL,fd,mode,/*bzdopen*/1);
206 ff3adf60 2004-04-14 devnull }
207 ff3adf60 2004-04-14 devnull 
208 ff3adf60 2004-04-14 devnull 
209 ff3adf60 2004-04-14 devnull /*---------------------------------------------------*/
210 ff3adf60 2004-04-14 devnull int BZ_API(BZ2_bzread) (BZFILE* b, void* buf, int len )
211 ff3adf60 2004-04-14 devnull {
212 ff3adf60 2004-04-14 devnull    int bzerr, nread;
213 ff3adf60 2004-04-14 devnull    if (((bzFile*)b)->lastErr == BZ_STREAM_END) return 0;
214 ff3adf60 2004-04-14 devnull    nread = BZ2_bzRead(&bzerr,b,buf,len);
215 ff3adf60 2004-04-14 devnull    if (bzerr == BZ_OK || bzerr == BZ_STREAM_END) {
216 ff3adf60 2004-04-14 devnull       return nread;
217 ff3adf60 2004-04-14 devnull    } else {
218 ff3adf60 2004-04-14 devnull       return -1;
219 ff3adf60 2004-04-14 devnull    }
220 ff3adf60 2004-04-14 devnull }
221 ff3adf60 2004-04-14 devnull 
222 ff3adf60 2004-04-14 devnull 
223 ff3adf60 2004-04-14 devnull /*---------------------------------------------------*/
224 ff3adf60 2004-04-14 devnull int BZ_API(BZ2_bzwrite) (BZFILE* b, void* buf, int len )
225 ff3adf60 2004-04-14 devnull {
226 ff3adf60 2004-04-14 devnull    int bzerr;
227 ff3adf60 2004-04-14 devnull 
228 ff3adf60 2004-04-14 devnull    BZ2_bzWrite(&bzerr,b,buf,len);
229 ff3adf60 2004-04-14 devnull    if(bzerr == BZ_OK){
230 ff3adf60 2004-04-14 devnull       return len;
231 ff3adf60 2004-04-14 devnull    }else{
232 ff3adf60 2004-04-14 devnull       return -1;
233 ff3adf60 2004-04-14 devnull    }
234 ff3adf60 2004-04-14 devnull }
235 ff3adf60 2004-04-14 devnull 
236 ff3adf60 2004-04-14 devnull 
237 ff3adf60 2004-04-14 devnull /*---------------------------------------------------*/
238 ff3adf60 2004-04-14 devnull int BZ_API(BZ2_bzflush) (BZFILE *b)
239 ff3adf60 2004-04-14 devnull {
240 ff3adf60 2004-04-14 devnull    /* do nothing now... */
241 ff3adf60 2004-04-14 devnull    return 0;
242 ff3adf60 2004-04-14 devnull }
243 ff3adf60 2004-04-14 devnull 
244 ff3adf60 2004-04-14 devnull 
245 ff3adf60 2004-04-14 devnull /*---------------------------------------------------*/
246 ff3adf60 2004-04-14 devnull void BZ_API(BZ2_bzclose) (BZFILE* b)
247 ff3adf60 2004-04-14 devnull {
248 ff3adf60 2004-04-14 devnull    int bzerr;
249 ff3adf60 2004-04-14 devnull    FILE *fp = ((bzFile *)b)->handle;
250 fa325e9b 2020-01-10 cross 
251 ff3adf60 2004-04-14 devnull    if (b==NULL) {return;}
252 ff3adf60 2004-04-14 devnull    if(((bzFile*)b)->writing){
253 ff3adf60 2004-04-14 devnull       BZ2_bzWriteClose(&bzerr,b,0,NULL,NULL);
254 ff3adf60 2004-04-14 devnull       if(bzerr != BZ_OK){
255 ff3adf60 2004-04-14 devnull          BZ2_bzWriteClose(NULL,b,1,NULL,NULL);
256 ff3adf60 2004-04-14 devnull       }
257 ff3adf60 2004-04-14 devnull    }else{
258 ff3adf60 2004-04-14 devnull       BZ2_bzReadClose(&bzerr,b);
259 ff3adf60 2004-04-14 devnull    }
260 ff3adf60 2004-04-14 devnull    if(fp!=stdin && fp!=stdout){
261 ff3adf60 2004-04-14 devnull       fclose(fp);
262 ff3adf60 2004-04-14 devnull    }
263 ff3adf60 2004-04-14 devnull }
264 ff3adf60 2004-04-14 devnull 
265 ff3adf60 2004-04-14 devnull 
266 ff3adf60 2004-04-14 devnull /*---------------------------------------------------*/
267 ff3adf60 2004-04-14 devnull /*--
268 fa325e9b 2020-01-10 cross    return last error code
269 ff3adf60 2004-04-14 devnull --*/
270 ff3adf60 2004-04-14 devnull static char *bzerrorstrings[] = {
271 ff3adf60 2004-04-14 devnull        "OK"
272 ff3adf60 2004-04-14 devnull       ,"SEQUENCE_ERROR"
273 ff3adf60 2004-04-14 devnull       ,"PARAM_ERROR"
274 ff3adf60 2004-04-14 devnull       ,"MEM_ERROR"
275 ff3adf60 2004-04-14 devnull       ,"DATA_ERROR"
276 ff3adf60 2004-04-14 devnull       ,"DATA_ERROR_MAGIC"
277 ff3adf60 2004-04-14 devnull       ,"IO_ERROR"
278 ff3adf60 2004-04-14 devnull       ,"UNEXPECTED_EOF"
279 ff3adf60 2004-04-14 devnull       ,"OUTBUFF_FULL"
280 ff3adf60 2004-04-14 devnull       ,"CONFIG_ERROR"
281 ff3adf60 2004-04-14 devnull       ,"???"   /* for future */
282 ff3adf60 2004-04-14 devnull       ,"???"   /* for future */
283 ff3adf60 2004-04-14 devnull       ,"???"   /* for future */
284 ff3adf60 2004-04-14 devnull       ,"???"   /* for future */
285 ff3adf60 2004-04-14 devnull       ,"???"   /* for future */
286 ff3adf60 2004-04-14 devnull       ,"???"   /* for future */
287 ff3adf60 2004-04-14 devnull };
288 ff3adf60 2004-04-14 devnull 
289 ff3adf60 2004-04-14 devnull 
290 ff3adf60 2004-04-14 devnull const char * BZ_API(BZ2_bzerror) (BZFILE *b, int *errnum)
291 ff3adf60 2004-04-14 devnull {
292 ff3adf60 2004-04-14 devnull    int err = ((bzFile *)b)->lastErr;
293 ff3adf60 2004-04-14 devnull 
294 ff3adf60 2004-04-14 devnull    if(err>0) err = 0;
295 ff3adf60 2004-04-14 devnull    *errnum = err;
296 ff3adf60 2004-04-14 devnull    return bzerrorstrings[err*-1];
297 ff3adf60 2004-04-14 devnull }