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Date:: Fri Jan 14 18:32:36 2005 UTC
Message:: stupid sun
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  1 ff3adf60 2004-04-14 devnull /* THIS FILE HAS BEEN MODIFIED -- rsc split bzlib.c into bzlib.c,
  2 ff3adf60 2004-04-14 devnull 		bzlibcompress.c, bzlibdecompress.c, bzlibread.c, bzlibwrite.c
  3 ff3adf60 2004-04-14 devnull  */
  4 ff3adf60 2004-04-14 devnull /*-------------------------------------------------------------*/
  5 ff3adf60 2004-04-14 devnull /*--- Library top-level functions.                          ---*/
  6 ff3adf60 2004-04-14 devnull /*---                                               bzlib.c ---*/
  7 ff3adf60 2004-04-14 devnull /*-------------------------------------------------------------*/
  8 ff3adf60 2004-04-14 devnull 
  9 ff3adf60 2004-04-14 devnull /*--
 10 ff3adf60 2004-04-14 devnull   This file is a part of bzip2 and/or libbzip2, a program and
 11 ff3adf60 2004-04-14 devnull   library for lossless, block-sorting data compression.
 12 ff3adf60 2004-04-14 devnull 
 13 ff3adf60 2004-04-14 devnull   Copyright (C) 1996-2000 Julian R Seward.  All rights reserved.
 14 ff3adf60 2004-04-14 devnull 
 15 ff3adf60 2004-04-14 devnull   Redistribution and use in source and binary forms, with or without
 16 ff3adf60 2004-04-14 devnull   modification, are permitted provided that the following conditions
 17 ff3adf60 2004-04-14 devnull   are met:
 18 ff3adf60 2004-04-14 devnull 
 19 ff3adf60 2004-04-14 devnull   1. Redistributions of source code must retain the above copyright
 20 ff3adf60 2004-04-14 devnull      notice, this list of conditions and the following disclaimer.
 21 ff3adf60 2004-04-14 devnull 
 22 ff3adf60 2004-04-14 devnull   2. The origin of this software must not be misrepresented; you must 
 23 ff3adf60 2004-04-14 devnull      not claim that you wrote the original software.  If you use this 
 24 ff3adf60 2004-04-14 devnull      software in a product, an acknowledgment in the product 
 25 ff3adf60 2004-04-14 devnull      documentation would be appreciated but is not required.
 26 ff3adf60 2004-04-14 devnull 
 27 ff3adf60 2004-04-14 devnull   3. Altered source versions must be plainly marked as such, and must
 28 ff3adf60 2004-04-14 devnull      not be misrepresented as being the original software.
 29 ff3adf60 2004-04-14 devnull 
 30 ff3adf60 2004-04-14 devnull   4. The name of the author may not be used to endorse or promote 
 31 ff3adf60 2004-04-14 devnull      products derived from this software without specific prior written 
 32 ff3adf60 2004-04-14 devnull      permission.
 33 ff3adf60 2004-04-14 devnull 
 34 ff3adf60 2004-04-14 devnull   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
 35 ff3adf60 2004-04-14 devnull   OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 36 ff3adf60 2004-04-14 devnull   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 37 ff3adf60 2004-04-14 devnull   ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 38 ff3adf60 2004-04-14 devnull   DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 39 ff3adf60 2004-04-14 devnull   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 40 ff3adf60 2004-04-14 devnull   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 41 ff3adf60 2004-04-14 devnull   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 42 ff3adf60 2004-04-14 devnull   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 43 ff3adf60 2004-04-14 devnull   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 44 ff3adf60 2004-04-14 devnull   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 45 ff3adf60 2004-04-14 devnull 
 46 ff3adf60 2004-04-14 devnull   Julian Seward, Cambridge, UK.
 47 ff3adf60 2004-04-14 devnull   jseward@acm.org
 48 ff3adf60 2004-04-14 devnull   bzip2/libbzip2 version 1.0 of 21 March 2000
 49 ff3adf60 2004-04-14 devnull 
 50 ff3adf60 2004-04-14 devnull   This program is based on (at least) the work of:
 51 ff3adf60 2004-04-14 devnull      Mike Burrows
 52 ff3adf60 2004-04-14 devnull      David Wheeler
 53 ff3adf60 2004-04-14 devnull      Peter Fenwick
 54 ff3adf60 2004-04-14 devnull      Alistair Moffat
 55 ff3adf60 2004-04-14 devnull      Radford Neal
 56 ff3adf60 2004-04-14 devnull      Ian H. Witten
 57 ff3adf60 2004-04-14 devnull      Robert Sedgewick
 58 ff3adf60 2004-04-14 devnull      Jon L. Bentley
 59 ff3adf60 2004-04-14 devnull 
 60 ff3adf60 2004-04-14 devnull   For more information on these sources, see the manual.
 61 ff3adf60 2004-04-14 devnull --*/
 62 ff3adf60 2004-04-14 devnull 
 63 ff3adf60 2004-04-14 devnull /*--
 64 ff3adf60 2004-04-14 devnull    CHANGES
 65 ff3adf60 2004-04-14 devnull    ~~~~~~~
 66 ff3adf60 2004-04-14 devnull    0.9.0 -- original version.
 67 ff3adf60 2004-04-14 devnull 
 68 ff3adf60 2004-04-14 devnull    0.9.0a/b -- no changes in this file.
 69 ff3adf60 2004-04-14 devnull 
 70 ff3adf60 2004-04-14 devnull    0.9.0c
 71 ff3adf60 2004-04-14 devnull       * made zero-length BZ_FLUSH work correctly in bzCompress().
 72 ff3adf60 2004-04-14 devnull       * fixed bzWrite/bzRead to ignore zero-length requests.
 73 ff3adf60 2004-04-14 devnull       * fixed bzread to correctly handle read requests after EOF.
 74 ff3adf60 2004-04-14 devnull       * wrong parameter order in call to bzDecompressInit in
 75 ff3adf60 2004-04-14 devnull         bzBuffToBuffDecompress.  Fixed.
 76 ff3adf60 2004-04-14 devnull --*/
 77 ff3adf60 2004-04-14 devnull 
 78 ff3adf60 2004-04-14 devnull #include "os.h"
 79 ff3adf60 2004-04-14 devnull #include "bzlib.h"
 80 ff3adf60 2004-04-14 devnull #include "bzlib_private.h"
 81 ff3adf60 2004-04-14 devnull #include "bzlib_stdio.h"
 82 ff3adf60 2004-04-14 devnull #include "bzlib_stdio_private.h"
 83 ff3adf60 2004-04-14 devnull 
 84 ff3adf60 2004-04-14 devnull /*---------------------------------------------------*/
 85 ff3adf60 2004-04-14 devnull BZFILE* BZ_API(BZ2_bzReadOpen) 
 86 ff3adf60 2004-04-14 devnull                    ( int*  bzerror, 
 87 ff3adf60 2004-04-14 devnull                      FILE* f, 
 88 ff3adf60 2004-04-14 devnull                      int   verbosity,
 89 ff3adf60 2004-04-14 devnull                      int   small,
 90 ff3adf60 2004-04-14 devnull                      void* unused,
 91 ff3adf60 2004-04-14 devnull                      int   nUnused )
 92 ff3adf60 2004-04-14 devnull {
 93 ff3adf60 2004-04-14 devnull    bzFile* bzf = NULL;
 94 ff3adf60 2004-04-14 devnull    int     ret;
 95 ff3adf60 2004-04-14 devnull 
 96 ff3adf60 2004-04-14 devnull    BZ_SETERR(BZ_OK);
 97 ff3adf60 2004-04-14 devnull 
 98 ff3adf60 2004-04-14 devnull    if (f == NULL || 
 99 ff3adf60 2004-04-14 devnull        (small != 0 && small != 1) ||
100 ff3adf60 2004-04-14 devnull        (verbosity < 0 || verbosity > 4) ||
101 ff3adf60 2004-04-14 devnull        (unused == NULL && nUnused != 0) ||
102 ff3adf60 2004-04-14 devnull        (unused != NULL && (nUnused < 0 || nUnused > BZ_MAX_UNUSED)))
103 ff3adf60 2004-04-14 devnull       { BZ_SETERR(BZ_PARAM_ERROR); return NULL; };
104 ff3adf60 2004-04-14 devnull 
105 ff3adf60 2004-04-14 devnull    if (ferror(f))
106 ff3adf60 2004-04-14 devnull       { BZ_SETERR(BZ_IO_ERROR); return NULL; };
107 ff3adf60 2004-04-14 devnull 
108 ff3adf60 2004-04-14 devnull    bzf = malloc ( sizeof(bzFile) );
109 ff3adf60 2004-04-14 devnull    if (bzf == NULL) 
110 ff3adf60 2004-04-14 devnull       { BZ_SETERR(BZ_MEM_ERROR); return NULL; };
111 ff3adf60 2004-04-14 devnull 
112 ff3adf60 2004-04-14 devnull    BZ_SETERR(BZ_OK);
113 ff3adf60 2004-04-14 devnull 
114 ff3adf60 2004-04-14 devnull    bzf->initialisedOk = False;
115 ff3adf60 2004-04-14 devnull    bzf->handle        = f;
116 ff3adf60 2004-04-14 devnull    bzf->bufN          = 0;
117 ff3adf60 2004-04-14 devnull    bzf->writing       = False;
118 ff3adf60 2004-04-14 devnull    bzf->strm.bzalloc  = NULL;
119 ff3adf60 2004-04-14 devnull    bzf->strm.bzfree   = NULL;
120 ff3adf60 2004-04-14 devnull    bzf->strm.opaque   = NULL;
121 ff3adf60 2004-04-14 devnull    
122 ff3adf60 2004-04-14 devnull    while (nUnused > 0) {
123 ff3adf60 2004-04-14 devnull       bzf->buf[bzf->bufN] = *((UChar*)(unused)); bzf->bufN++;
124 ff3adf60 2004-04-14 devnull       unused = ((void*)( 1 + ((UChar*)(unused))  ));
125 ff3adf60 2004-04-14 devnull       nUnused--;
126 ff3adf60 2004-04-14 devnull    }
127 ff3adf60 2004-04-14 devnull 
128 ff3adf60 2004-04-14 devnull    ret = BZ2_bzDecompressInit ( &(bzf->strm), verbosity, small );
129 ff3adf60 2004-04-14 devnull    if (ret != BZ_OK)
130 ff3adf60 2004-04-14 devnull       { BZ_SETERR(ret); free(bzf); return NULL; };
131 ff3adf60 2004-04-14 devnull 
132 ff3adf60 2004-04-14 devnull    bzf->strm.avail_in = bzf->bufN;
133 ff3adf60 2004-04-14 devnull    bzf->strm.next_in  = bzf->buf;
134 ff3adf60 2004-04-14 devnull 
135 ff3adf60 2004-04-14 devnull    bzf->initialisedOk = True;
136 ff3adf60 2004-04-14 devnull    return bzf;   
137 ff3adf60 2004-04-14 devnull }
138 ff3adf60 2004-04-14 devnull 
139 ff3adf60 2004-04-14 devnull 
140 ff3adf60 2004-04-14 devnull /*---------------------------------------------------*/
141 ff3adf60 2004-04-14 devnull void BZ_API(BZ2_bzReadClose) ( int *bzerror, BZFILE *b )
142 ff3adf60 2004-04-14 devnull {
143 ff3adf60 2004-04-14 devnull    bzFile* bzf = (bzFile*)b;
144 ff3adf60 2004-04-14 devnull 
145 ff3adf60 2004-04-14 devnull    BZ_SETERR(BZ_OK);
146 ff3adf60 2004-04-14 devnull    if (bzf == NULL)
147 ff3adf60 2004-04-14 devnull       { BZ_SETERR(BZ_OK); return; };
148 ff3adf60 2004-04-14 devnull 
149 ff3adf60 2004-04-14 devnull    if (bzf->writing)
150 ff3adf60 2004-04-14 devnull       { BZ_SETERR(BZ_SEQUENCE_ERROR); return; };
151 ff3adf60 2004-04-14 devnull 
152 ff3adf60 2004-04-14 devnull    if (bzf->initialisedOk)
153 ff3adf60 2004-04-14 devnull       (void)BZ2_bzDecompressEnd ( &(bzf->strm) );
154 ff3adf60 2004-04-14 devnull    free ( bzf );
155 ff3adf60 2004-04-14 devnull }
156 ff3adf60 2004-04-14 devnull 
157 ff3adf60 2004-04-14 devnull 
158 ff3adf60 2004-04-14 devnull /*---------------------------------------------------*/
159 ff3adf60 2004-04-14 devnull int BZ_API(BZ2_bzRead) 
160 ff3adf60 2004-04-14 devnull            ( int*    bzerror, 
161 ff3adf60 2004-04-14 devnull              BZFILE* b, 
162 ff3adf60 2004-04-14 devnull              void*   buf, 
163 ff3adf60 2004-04-14 devnull              int     len )
164 ff3adf60 2004-04-14 devnull {
165 ff3adf60 2004-04-14 devnull    Int32   n, ret;
166 ff3adf60 2004-04-14 devnull    bzFile* bzf = (bzFile*)b;
167 ff3adf60 2004-04-14 devnull 
168 ff3adf60 2004-04-14 devnull    BZ_SETERR(BZ_OK);
169 ff3adf60 2004-04-14 devnull 
170 ff3adf60 2004-04-14 devnull    if (bzf == NULL || buf == NULL || len < 0)
171 ff3adf60 2004-04-14 devnull       { BZ_SETERR(BZ_PARAM_ERROR); return 0; };
172 ff3adf60 2004-04-14 devnull 
173 ff3adf60 2004-04-14 devnull    if (bzf->writing)
174 ff3adf60 2004-04-14 devnull       { BZ_SETERR(BZ_SEQUENCE_ERROR); return 0; };
175 ff3adf60 2004-04-14 devnull 
176 ff3adf60 2004-04-14 devnull    if (len == 0)
177 ff3adf60 2004-04-14 devnull       { BZ_SETERR(BZ_OK); return 0; };
178 ff3adf60 2004-04-14 devnull 
179 ff3adf60 2004-04-14 devnull    bzf->strm.avail_out = len;
180 ff3adf60 2004-04-14 devnull    bzf->strm.next_out = buf;
181 ff3adf60 2004-04-14 devnull 
182 ff3adf60 2004-04-14 devnull    while (True) {
183 ff3adf60 2004-04-14 devnull 
184 ff3adf60 2004-04-14 devnull       if (ferror(bzf->handle)) 
185 ff3adf60 2004-04-14 devnull          { BZ_SETERR(BZ_IO_ERROR); return 0; };
186 ff3adf60 2004-04-14 devnull 
187 ff3adf60 2004-04-14 devnull       if (bzf->strm.avail_in == 0 && !bz_feof(bzf->handle)) {
188 ff3adf60 2004-04-14 devnull          n = fread ( bzf->buf, sizeof(UChar), 
189 ff3adf60 2004-04-14 devnull                      BZ_MAX_UNUSED, bzf->handle );
190 ff3adf60 2004-04-14 devnull          if (ferror(bzf->handle))
191 ff3adf60 2004-04-14 devnull             { BZ_SETERR(BZ_IO_ERROR); return 0; };
192 ff3adf60 2004-04-14 devnull          bzf->bufN = n;
193 ff3adf60 2004-04-14 devnull          bzf->strm.avail_in = bzf->bufN;
194 ff3adf60 2004-04-14 devnull          bzf->strm.next_in = bzf->buf;
195 ff3adf60 2004-04-14 devnull       }
196 ff3adf60 2004-04-14 devnull 
197 ff3adf60 2004-04-14 devnull       ret = BZ2_bzDecompress ( &(bzf->strm) );
198 ff3adf60 2004-04-14 devnull 
199 ff3adf60 2004-04-14 devnull       if (ret != BZ_OK && ret != BZ_STREAM_END)
200 ff3adf60 2004-04-14 devnull          { BZ_SETERR(ret); return 0; };
201 ff3adf60 2004-04-14 devnull 
202 ff3adf60 2004-04-14 devnull       if (ret == BZ_OK && bz_feof(bzf->handle) && 
203 ff3adf60 2004-04-14 devnull           bzf->strm.avail_in == 0 && bzf->strm.avail_out > 0)
204 ff3adf60 2004-04-14 devnull          { BZ_SETERR(BZ_UNEXPECTED_EOF); return 0; };
205 ff3adf60 2004-04-14 devnull 
206 ff3adf60 2004-04-14 devnull       if (ret == BZ_STREAM_END)
207 ff3adf60 2004-04-14 devnull          { BZ_SETERR(BZ_STREAM_END);
208 ff3adf60 2004-04-14 devnull            return len - bzf->strm.avail_out; };
209 ff3adf60 2004-04-14 devnull       if (bzf->strm.avail_out == 0)
210 ff3adf60 2004-04-14 devnull          { BZ_SETERR(BZ_OK); return len; };
211 ff3adf60 2004-04-14 devnull       
212 ff3adf60 2004-04-14 devnull    }
213 ff3adf60 2004-04-14 devnull 
214 d7925b13 2005-01-14 devnull   /*  return 0; not reached*/
215 ff3adf60 2004-04-14 devnull }
216 ff3adf60 2004-04-14 devnull 
217 ff3adf60 2004-04-14 devnull 
218 ff3adf60 2004-04-14 devnull /*---------------------------------------------------*/
219 ff3adf60 2004-04-14 devnull void BZ_API(BZ2_bzReadGetUnused) 
220 ff3adf60 2004-04-14 devnull                      ( int*    bzerror, 
221 ff3adf60 2004-04-14 devnull                        BZFILE* b, 
222 ff3adf60 2004-04-14 devnull                        void**  unused, 
223 ff3adf60 2004-04-14 devnull                        int*    nUnused )
224 ff3adf60 2004-04-14 devnull {
225 ff3adf60 2004-04-14 devnull    bzFile* bzf = (bzFile*)b;
226 ff3adf60 2004-04-14 devnull    if (bzf == NULL)
227 ff3adf60 2004-04-14 devnull       { BZ_SETERR(BZ_PARAM_ERROR); return; };
228 ff3adf60 2004-04-14 devnull    if (bzf->lastErr != BZ_STREAM_END)
229 ff3adf60 2004-04-14 devnull       { BZ_SETERR(BZ_SEQUENCE_ERROR); return; };
230 ff3adf60 2004-04-14 devnull    if (unused == NULL || nUnused == NULL)
231 ff3adf60 2004-04-14 devnull       { BZ_SETERR(BZ_PARAM_ERROR); return; };
232 ff3adf60 2004-04-14 devnull 
233 ff3adf60 2004-04-14 devnull    BZ_SETERR(BZ_OK);
234 ff3adf60 2004-04-14 devnull    *nUnused = bzf->strm.avail_in;
235 ff3adf60 2004-04-14 devnull    *unused = bzf->strm.next_in;
236 ff3adf60 2004-04-14 devnull }