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-rw-r--r--lib_generic/bzlib.c1597
1 files changed, 1597 insertions, 0 deletions
diff --git a/lib_generic/bzlib.c b/lib_generic/bzlib.c
new file mode 100644
index 000000000..4139c5b4b
--- /dev/null
+++ b/lib_generic/bzlib.c
@@ -0,0 +1,1597 @@
+#include <config.h>
+#ifdef CONFIG_BZIP2
+
+/*
+ * This file is a modified version of bzlib.c from the bzip2-1.0.2
+ * distribution which can be found at http://sources.redhat.com/bzip2/
+ */
+
+/*-------------------------------------------------------------*/
+/*--- Library top-level functions. ---*/
+/*--- bzlib.c ---*/
+/*-------------------------------------------------------------*/
+
+/*--
+ This file is a part of bzip2 and/or libbzip2, a program and
+ library for lossless, block-sorting data compression.
+
+ Copyright (C) 1996-2002 Julian R Seward. All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ 1. Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ 2. The origin of this software must not be misrepresented; you must
+ not claim that you wrote the original software. If you use this
+ software in a product, an acknowledgment in the product
+ documentation would be appreciated but is not required.
+
+ 3. Altered source versions must be plainly marked as such, and must
+ not be misrepresented as being the original software.
+
+ 4. The name of the author may not be used to endorse or promote
+ products derived from this software without specific prior written
+ permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
+ OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+ Julian Seward, Cambridge, UK.
+ jseward@acm.org
+ bzip2/libbzip2 version 1.0 of 21 March 2000
+
+ This program is based on (at least) the work of:
+ Mike Burrows
+ David Wheeler
+ Peter Fenwick
+ Alistair Moffat
+ Radford Neal
+ Ian H. Witten
+ Robert Sedgewick
+ Jon L. Bentley
+
+ For more information on these sources, see the manual.
+--*/
+
+/*--
+ CHANGES
+ ~~~~~~~
+ 0.9.0 -- original version.
+
+ 0.9.0a/b -- no changes in this file.
+
+ 0.9.0c
+ * made zero-length BZ_FLUSH work correctly in bzCompress().
+ * fixed bzWrite/bzRead to ignore zero-length requests.
+ * fixed bzread to correctly handle read requests after EOF.
+ * wrong parameter order in call to bzDecompressInit in
+ bzBuffToBuffDecompress. Fixed.
+--*/
+
+#include "bzlib_private.h"
+
+/*---------------------------------------------------*/
+/*--- Compression stuff ---*/
+/*---------------------------------------------------*/
+
+
+/*---------------------------------------------------*/
+#ifndef BZ_NO_STDIO
+void BZ2_bz__AssertH__fail ( int errcode )
+{
+ fprintf(stderr,
+ "\n\nbzip2/libbzip2: internal error number %d.\n"
+ "This is a bug in bzip2/libbzip2, %s.\n"
+ "Please report it to me at: jseward@acm.org. If this happened\n"
+ "when you were using some program which uses libbzip2 as a\n"
+ "component, you should also report this bug to the author(s)\n"
+ "of that program. Please make an effort to report this bug;\n"
+ "timely and accurate bug reports eventually lead to higher\n"
+ "quality software. Thanks. Julian Seward, 30 December 2001.\n\n",
+ errcode,
+ BZ2_bzlibVersion()
+ );
+
+ if (errcode == 1007) {
+ fprintf(stderr,
+ "\n*** A special note about internal error number 1007 ***\n"
+ "\n"
+ "Experience suggests that a common cause of i.e. 1007\n"
+ "is unreliable memory or other hardware. The 1007 assertion\n"
+ "just happens to cross-check the results of huge numbers of\n"
+ "memory reads/writes, and so acts (unintendedly) as a stress\n"
+ "test of your memory system.\n"
+ "\n"
+ "I suggest the following: try compressing the file again,\n"
+ "possibly monitoring progress in detail with the -vv flag.\n"
+ "\n"
+ "* If the error cannot be reproduced, and/or happens at different\n"
+ " points in compression, you may have a flaky memory system.\n"
+ " Try a memory-test program. I have used Memtest86\n"
+ " (www.memtest86.com). At the time of writing it is free (GPLd).\n"
+ " Memtest86 tests memory much more thorougly than your BIOSs\n"
+ " power-on test, and may find failures that the BIOS doesn't.\n"
+ "\n"
+ "* If the error can be repeatably reproduced, this is a bug in\n"
+ " bzip2, and I would very much like to hear about it. Please\n"
+ " let me know, and, ideally, save a copy of the file causing the\n"
+ " problem -- without which I will be unable to investigate it.\n"
+ "\n"
+ );
+ }
+
+ exit(3);
+}
+#endif
+
+
+/*---------------------------------------------------*/
+static
+int bz_config_ok ( void )
+{
+ if (sizeof(int) != 4) return 0;
+ if (sizeof(short) != 2) return 0;
+ if (sizeof(char) != 1) return 0;
+ return 1;
+}
+
+
+/*---------------------------------------------------*/
+static
+void* default_bzalloc ( void* opaque, Int32 items, Int32 size )
+{
+ void* v = malloc ( items * size );
+ return v;
+}
+
+static
+void default_bzfree ( void* opaque, void* addr )
+{
+ if (addr != NULL) free ( addr );
+}
+
+#ifndef BZ_NO_COMPRESS
+/*---------------------------------------------------*/
+static
+void prepare_new_block ( EState* s )
+{
+ Int32 i;
+ s->nblock = 0;
+ s->numZ = 0;
+ s->state_out_pos = 0;
+ BZ_INITIALISE_CRC ( s->blockCRC );
+ for (i = 0; i < 256; i++) s->inUse[i] = False;
+ s->blockNo++;
+}
+
+
+/*---------------------------------------------------*/
+static
+void init_RL ( EState* s )
+{
+ s->state_in_ch = 256;
+ s->state_in_len = 0;
+}
+
+
+static
+Bool isempty_RL ( EState* s )
+{
+ if (s->state_in_ch < 256 && s->state_in_len > 0)
+ return False; else
+ return True;
+}
+
+/*---------------------------------------------------*/
+int BZ_API(BZ2_bzCompressInit)
+ ( bz_stream* strm,
+ int blockSize100k,
+ int verbosity,
+ int workFactor )
+{
+ Int32 n;
+ EState* s;
+
+ if (!bz_config_ok()) return BZ_CONFIG_ERROR;
+
+ if (strm == NULL ||
+ blockSize100k < 1 || blockSize100k > 9 ||
+ workFactor < 0 || workFactor > 250)
+ return BZ_PARAM_ERROR;
+
+ if (workFactor == 0) workFactor = 30;
+ if (strm->bzalloc == NULL) strm->bzalloc = default_bzalloc;
+ if (strm->bzfree == NULL) strm->bzfree = default_bzfree;
+
+ s = BZALLOC( sizeof(EState) );
+ if (s == NULL) return BZ_MEM_ERROR;
+ s->strm = strm;
+
+ s->arr1 = NULL;
+ s->arr2 = NULL;
+ s->ftab = NULL;
+
+ n = 100000 * blockSize100k;
+ s->arr1 = BZALLOC( n * sizeof(UInt32) );
+ s->arr2 = BZALLOC( (n+BZ_N_OVERSHOOT) * sizeof(UInt32) );
+ s->ftab = BZALLOC( 65537 * sizeof(UInt32) );
+
+ if (s->arr1 == NULL || s->arr2 == NULL || s->ftab == NULL) {
+ if (s->arr1 != NULL) BZFREE(s->arr1);
+ if (s->arr2 != NULL) BZFREE(s->arr2);
+ if (s->ftab != NULL) BZFREE(s->ftab);
+ if (s != NULL) BZFREE(s);
+ return BZ_MEM_ERROR;
+ }
+
+ s->blockNo = 0;
+ s->state = BZ_S_INPUT;
+ s->mode = BZ_M_RUNNING;
+ s->combinedCRC = 0;
+ s->blockSize100k = blockSize100k;
+ s->nblockMAX = 100000 * blockSize100k - 19;
+ s->verbosity = verbosity;
+ s->workFactor = workFactor;
+
+ s->block = (UChar*)s->arr2;
+ s->mtfv = (UInt16*)s->arr1;
+ s->zbits = NULL;
+ s->ptr = (UInt32*)s->arr1;
+
+ strm->state = s;
+ strm->total_in_lo32 = 0;
+ strm->total_in_hi32 = 0;
+ strm->total_out_lo32 = 0;
+ strm->total_out_hi32 = 0;
+ init_RL ( s );
+ prepare_new_block ( s );
+ return BZ_OK;
+}
+
+
+/*---------------------------------------------------*/
+static
+void add_pair_to_block ( EState* s )
+{
+ Int32 i;
+ UChar ch = (UChar)(s->state_in_ch);
+ for (i = 0; i < s->state_in_len; i++) {
+ BZ_UPDATE_CRC( s->blockCRC, ch );
+ }
+ s->inUse[s->state_in_ch] = True;
+ switch (s->state_in_len) {
+ case 1:
+ s->block[s->nblock] = (UChar)ch; s->nblock++;
+ break;
+ case 2:
+ s->block[s->nblock] = (UChar)ch; s->nblock++;
+ s->block[s->nblock] = (UChar)ch; s->nblock++;
+ break;
+ case 3:
+ s->block[s->nblock] = (UChar)ch; s->nblock++;
+ s->block[s->nblock] = (UChar)ch; s->nblock++;
+ s->block[s->nblock] = (UChar)ch; s->nblock++;
+ break;
+ default:
+ s->inUse[s->state_in_len-4] = True;
+ s->block[s->nblock] = (UChar)ch; s->nblock++;
+ s->block[s->nblock] = (UChar)ch; s->nblock++;
+ s->block[s->nblock] = (UChar)ch; s->nblock++;
+ s->block[s->nblock] = (UChar)ch; s->nblock++;
+ s->block[s->nblock] = ((UChar)(s->state_in_len-4));
+ s->nblock++;
+ break;
+ }
+}
+
+
+/*---------------------------------------------------*/
+static
+void flush_RL ( EState* s )
+{
+ if (s->state_in_ch < 256) add_pair_to_block ( s );
+ init_RL ( s );
+}
+
+
+/*---------------------------------------------------*/
+#define ADD_CHAR_TO_BLOCK(zs,zchh0) \
+{ \
+ UInt32 zchh = (UInt32)(zchh0); \
+ /*-- fast track the common case --*/ \
+ if (zchh != zs->state_in_ch && \
+ zs->state_in_len == 1) { \
+ UChar ch = (UChar)(zs->state_in_ch); \
+ BZ_UPDATE_CRC( zs->blockCRC, ch ); \
+ zs->inUse[zs->state_in_ch] = True; \
+ zs->block[zs->nblock] = (UChar)ch; \
+ zs->nblock++; \
+ zs->state_in_ch = zchh; \
+ } \
+ else \
+ /*-- general, uncommon cases --*/ \
+ if (zchh != zs->state_in_ch || \
+ zs->state_in_len == 255) { \
+ if (zs->state_in_ch < 256) \
+ add_pair_to_block ( zs ); \
+ zs->state_in_ch = zchh; \
+ zs->state_in_len = 1; \
+ } else { \
+ zs->state_in_len++; \
+ } \
+}
+
+
+/*---------------------------------------------------*/
+static
+Bool copy_input_until_stop ( EState* s )
+{
+ Bool progress_in = False;
+
+ if (s->mode == BZ_M_RUNNING) {
+
+ /*-- fast track the common case --*/
+ while (True) {
+ /*-- block full? --*/
+ if (s->nblock >= s->nblockMAX) break;
+ /*-- no input? --*/
+ if (s->strm->avail_in == 0) break;
+ progress_in = True;
+ ADD_CHAR_TO_BLOCK ( s, (UInt32)(*((UChar*)(s->strm->next_in))) );
+ s->strm->next_in++;
+ s->strm->avail_in--;
+ s->strm->total_in_lo32++;
+ if (s->strm->total_in_lo32 == 0) s->strm->total_in_hi32++;
+ }
+
+ } else {
+
+ /*-- general, uncommon case --*/
+ while (True) {
+ /*-- block full? --*/
+ if (s->nblock >= s->nblockMAX) break;
+ /*-- no input? --*/
+ if (s->strm->avail_in == 0) break;
+ /*-- flush/finish end? --*/
+ if (s->avail_in_expect == 0) break;
+ progress_in = True;
+ ADD_CHAR_TO_BLOCK ( s, (UInt32)(*((UChar*)(s->strm->next_in))) );
+ s->strm->next_in++;
+ s->strm->avail_in--;
+ s->strm->total_in_lo32++;
+ if (s->strm->total_in_lo32 == 0) s->strm->total_in_hi32++;
+ s->avail_in_expect--;
+ }
+ }
+ return progress_in;
+}
+
+
+/*---------------------------------------------------*/
+static
+Bool copy_output_until_stop ( EState* s )
+{
+ Bool progress_out = False;
+
+ while (True) {
+
+ /*-- no output space? --*/
+ if (s->strm->avail_out == 0) break;
+
+ /*-- block done? --*/
+ if (s->state_out_pos >= s->numZ) break;
+
+ progress_out = True;
+ *(s->strm->next_out) = s->zbits[s->state_out_pos];
+ s->state_out_pos++;
+ s->strm->avail_out--;
+ s->strm->next_out++;
+ s->strm->total_out_lo32++;
+ if (s->strm->total_out_lo32 == 0) s->strm->total_out_hi32++;
+ }
+
+ return progress_out;
+}
+
+
+/*---------------------------------------------------*/
+static
+Bool handle_compress ( bz_stream* strm )
+{
+ Bool progress_in = False;
+ Bool progress_out = False;
+ EState* s = strm->state;
+
+ while (True) {
+
+ if (s->state == BZ_S_OUTPUT) {
+ progress_out |= copy_output_until_stop ( s );
+ if (s->state_out_pos < s->numZ) break;
+ if (s->mode == BZ_M_FINISHING &&
+ s->avail_in_expect == 0 &&
+ isempty_RL(s)) break;
+ prepare_new_block ( s );
+ s->state = BZ_S_INPUT;
+ if (s->mode == BZ_M_FLUSHING &&
+ s->avail_in_expect == 0 &&
+ isempty_RL(s)) break;
+ }
+
+ if (s->state == BZ_S_INPUT) {
+ progress_in |= copy_input_until_stop ( s );
+ if (s->mode != BZ_M_RUNNING && s->avail_in_expect == 0) {
+ flush_RL ( s );
+ BZ2_compressBlock ( s, (Bool)(s->mode == BZ_M_FINISHING) );
+ s->state = BZ_S_OUTPUT;
+ }
+ else
+ if (s->nblock >= s->nblockMAX) {
+ BZ2_compressBlock ( s, False );
+ s->state = BZ_S_OUTPUT;
+ }
+ else
+ if (s->strm->avail_in == 0) {
+ break;
+ }
+ }
+
+ }
+
+ return progress_in || progress_out;
+}
+
+
+/*---------------------------------------------------*/
+int BZ_API(BZ2_bzCompress) ( bz_stream *strm, int action )
+{
+ Bool progress;
+ EState* s;
+ if (strm == NULL) return BZ_PARAM_ERROR;
+ s = strm->state;
+ if (s == NULL) return BZ_PARAM_ERROR;
+ if (s->strm != strm) return BZ_PARAM_ERROR;
+
+ preswitch:
+ switch (s->mode) {
+
+ case BZ_M_IDLE:
+ return BZ_SEQUENCE_ERROR;
+
+ case BZ_M_RUNNING:
+ if (action == BZ_RUN) {
+ progress = handle_compress ( strm );
+ return progress ? BZ_RUN_OK : BZ_PARAM_ERROR;
+ }
+ else
+ if (action == BZ_FLUSH) {
+ s->avail_in_expect = strm->avail_in;
+ s->mode = BZ_M_FLUSHING;
+ goto preswitch;
+ }
+ else
+ if (action == BZ_FINISH) {
+ s->avail_in_expect = strm->avail_in;
+ s->mode = BZ_M_FINISHING;
+ goto preswitch;
+ }
+ else
+ return BZ_PARAM_ERROR;
+
+ case BZ_M_FLUSHING:
+ if (action != BZ_FLUSH) return BZ_SEQUENCE_ERROR;
+ if (s->avail_in_expect != s->strm->avail_in)
+ return BZ_SEQUENCE_ERROR;
+ progress = handle_compress ( strm );
+ if (s->avail_in_expect > 0 || !isempty_RL(s) ||
+ s->state_out_pos < s->numZ) return BZ_FLUSH_OK;
+ s->mode = BZ_M_RUNNING;
+ return BZ_RUN_OK;
+
+ case BZ_M_FINISHING:
+ if (action != BZ_FINISH) return BZ_SEQUENCE_ERROR;
+ if (s->avail_in_expect != s->strm->avail_in)
+ return BZ_SEQUENCE_ERROR;
+ progress = handle_compress ( strm );
+ if (!progress) return BZ_SEQUENCE_ERROR;
+ if (s->avail_in_expect > 0 || !isempty_RL(s) ||
+ s->state_out_pos < s->numZ) return BZ_FINISH_OK;
+ s->mode = BZ_M_IDLE;
+ return BZ_STREAM_END;
+ }
+ return BZ_OK; /*--not reached--*/
+}
+
+
+/*---------------------------------------------------*/
+int BZ_API(BZ2_bzCompressEnd) ( bz_stream *strm )
+{
+ EState* s;
+ if (strm == NULL) return BZ_PARAM_ERROR;
+ s = strm->state;
+ if (s == NULL) return BZ_PARAM_ERROR;
+ if (s->strm != strm) return BZ_PARAM_ERROR;
+
+ if (s->arr1 != NULL) BZFREE(s->arr1);
+ if (s->arr2 != NULL) BZFREE(s->arr2);
+ if (s->ftab != NULL) BZFREE(s->ftab);
+ BZFREE(strm->state);
+
+ strm->state = NULL;
+
+ return BZ_OK;
+}
+#endif /* BZ_NO_COMPRESS */
+
+/*---------------------------------------------------*/
+/*--- Decompression stuff ---*/
+/*---------------------------------------------------*/
+
+/*---------------------------------------------------*/
+int BZ_API(BZ2_bzDecompressInit)
+ ( bz_stream* strm,
+ int verbosity,
+ int small )
+{
+ DState* s;
+
+ if (!bz_config_ok()) return BZ_CONFIG_ERROR;
+
+ if (strm == NULL) return BZ_PARAM_ERROR;
+ if (small != 0 && small != 1) return BZ_PARAM_ERROR;
+ if (verbosity < 0 || verbosity > 4) return BZ_PARAM_ERROR;
+
+ if (strm->bzalloc == NULL) strm->bzalloc = default_bzalloc;
+ if (strm->bzfree == NULL) strm->bzfree = default_bzfree;
+
+ s = BZALLOC( sizeof(DState) );
+ if (s == NULL) return BZ_MEM_ERROR;
+ s->strm = strm;
+ strm->state = s;
+ s->state = BZ_X_MAGIC_1;
+ s->bsLive = 0;
+ s->bsBuff = 0;
+ s->calculatedCombinedCRC = 0;
+ strm->total_in_lo32 = 0;
+ strm->total_in_hi32 = 0;
+ strm->total_out_lo32 = 0;
+ strm->total_out_hi32 = 0;
+ s->smallDecompress = (Bool)small;
+ s->ll4 = NULL;
+ s->ll16 = NULL;
+ s->tt = NULL;
+ s->currBlockNo = 0;
+ s->verbosity = verbosity;
+
+ return BZ_OK;
+}
+
+
+/*---------------------------------------------------*/
+static
+void unRLE_obuf_to_output_FAST ( DState* s )
+{
+ UChar k1;
+
+ if (s->blockRandomised) {
+
+ while (True) {
+ /* try to finish existing run */
+ while (True) {
+ if (s->strm->avail_out == 0) return;
+ if (s->state_out_len == 0) break;
+ *( (UChar*)(s->strm->next_out) ) = s->state_out_ch;
+ BZ_UPDATE_CRC ( s->calculatedBlockCRC, s->state_out_ch );
+ s->state_out_len--;
+ s->strm->next_out++;
+ s->strm->avail_out--;
+ s->strm->total_out_lo32++;
+ if (s->strm->total_out_lo32 == 0) s->strm->total_out_hi32++;
+ }
+
+ /* can a new run be started? */
+ if (s->nblock_used == s->save_nblock+1) return;
+
+
+ s->state_out_len = 1;
+ s->state_out_ch = s->k0;
+ BZ_GET_FAST(k1); BZ_RAND_UPD_MASK;
+ k1 ^= BZ_RAND_MASK; s->nblock_used++;
+ if (s->nblock_used == s->save_nblock+1) continue;
+ if (k1 != s->k0) { s->k0 = k1; continue; };
+
+ s->state_out_len = 2;
+ BZ_GET_FAST(k1); BZ_RAND_UPD_MASK;
+ k1 ^= BZ_RAND_MASK; s->nblock_used++;
+ if (s->nblock_used == s->save_nblock+1) continue;
+ if (k1 != s->k0) { s->k0 = k1; continue; };
+
+ s->state_out_len = 3;
+ BZ_GET_FAST(k1); BZ_RAND_UPD_MASK;
+ k1 ^= BZ_RAND_MASK; s->nblock_used++;
+ if (s->nblock_used == s->save_nblock+1) continue;
+ if (k1 != s->k0) { s->k0 = k1; continue; };
+
+ BZ_GET_FAST(k1); BZ_RAND_UPD_MASK;
+ k1 ^= BZ_RAND_MASK; s->nblock_used++;
+ s->state_out_len = ((Int32)k1) + 4;
+ BZ_GET_FAST(s->k0); BZ_RAND_UPD_MASK;
+ s->k0 ^= BZ_RAND_MASK; s->nblock_used++;
+ }
+
+ } else {
+
+ /* restore */
+ UInt32 c_calculatedBlockCRC = s->calculatedBlockCRC;
+ UChar c_state_out_ch = s->state_out_ch;
+ Int32 c_state_out_len = s->state_out_len;
+ Int32 c_nblock_used = s->nblock_used;
+ Int32 c_k0 = s->k0;
+ UInt32* c_tt = s->tt;
+ UInt32 c_tPos = s->tPos;
+ char* cs_next_out = s->strm->next_out;
+ unsigned int cs_avail_out = s->strm->avail_out;
+ /* end restore */
+
+ UInt32 avail_out_INIT = cs_avail_out;
+ Int32 s_save_nblockPP = s->save_nblock+1;
+ unsigned int total_out_lo32_old;
+
+ while (True) {
+
+ /* try to finish existing run */
+ if (c_state_out_len > 0) {
+ while (True) {
+ if (cs_avail_out == 0) goto return_notr;
+ if (c_state_out_len == 1) break;
+ *( (UChar*)(cs_next_out) ) = c_state_out_ch;
+ BZ_UPDATE_CRC ( c_calculatedBlockCRC, c_state_out_ch );
+ c_state_out_len--;
+ cs_next_out++;
+ cs_avail_out--;
+ }
+ s_state_out_len_eq_one:
+ {
+ if (cs_avail_out == 0) {
+ c_state_out_len = 1; goto return_notr;
+ };
+ *( (UChar*)(cs_next_out) ) = c_state_out_ch;
+ BZ_UPDATE_CRC ( c_calculatedBlockCRC, c_state_out_ch );
+ cs_next_out++;
+ cs_avail_out--;
+ }
+ }
+ /* can a new run be started? */
+ if (c_nblock_used == s_save_nblockPP) {
+ c_state_out_len = 0; goto return_notr;
+ };
+ c_state_out_ch = c_k0;
+ BZ_GET_FAST_C(k1); c_nblock_used++;
+ if (k1 != c_k0) {
+ c_k0 = k1; goto s_state_out_len_eq_one;
+ };
+ if (c_nblock_used == s_save_nblockPP)
+ goto s_state_out_len_eq_one;
+
+ c_state_out_len = 2;
+ BZ_GET_FAST_C(k1); c_nblock_used++;
+ if (c_nblock_used == s_save_nblockPP) continue;
+ if (k1 != c_k0) { c_k0 = k1; continue; };
+
+ c_state_out_len = 3;
+ BZ_GET_FAST_C(k1); c_nblock_used++;
+ if (c_nblock_used == s_save_nblockPP) continue;
+ if (k1 != c_k0) { c_k0 = k1; continue; };
+
+ BZ_GET_FAST_C(k1); c_nblock_used++;
+ c_state_out_len = ((Int32)k1) + 4;
+ BZ_GET_FAST_C(c_k0); c_nblock_used++;
+ }
+
+ return_notr:
+ total_out_lo32_old = s->strm->total_out_lo32;
+ s->strm->total_out_lo32 += (avail_out_INIT - cs_avail_out);
+ if (s->strm->total_out_lo32 < total_out_lo32_old)
+ s->strm->total_out_hi32++;
+
+ /* save */
+ s->calculatedBlockCRC = c_calculatedBlockCRC;
+ s->state_out_ch = c_state_out_ch;
+ s->state_out_len = c_state_out_len;
+ s->nblock_used = c_nblock_used;
+ s->k0 = c_k0;
+ s->tt = c_tt;
+ s->tPos = c_tPos;
+ s->strm->next_out = cs_next_out;
+ s->strm->avail_out = cs_avail_out;
+ /* end save */
+ }
+}
+
+
+
+/*---------------------------------------------------*/
+__inline__ Int32 BZ2_indexIntoF ( Int32 indx, Int32 *cftab )
+{
+ Int32 nb, na, mid;
+ nb = 0;
+ na = 256;
+ do {
+ mid = (nb + na) >> 1;
+ if (indx >= cftab[mid]) nb = mid; else na = mid;
+ }
+ while (na - nb != 1);
+ return nb;
+}
+
+
+/*---------------------------------------------------*/
+static
+void unRLE_obuf_to_output_SMALL ( DState* s )
+{
+ UChar k1;
+
+ if (s->blockRandomised) {
+
+ while (True) {
+ /* try to finish existing run */
+ while (True) {
+ if (s->strm->avail_out == 0) return;
+ if (s->state_out_len == 0) break;
+ *( (UChar*)(s->strm->next_out) ) = s->state_out_ch;
+ BZ_UPDATE_CRC ( s->calculatedBlockCRC, s->state_out_ch );
+ s->state_out_len--;
+ s->strm->next_out++;
+ s->strm->avail_out--;
+ s->strm->total_out_lo32++;
+ if (s->strm->total_out_lo32 == 0) s->strm->total_out_hi32++;
+ }
+
+ /* can a new run be started? */
+ if (s->nblock_used == s->save_nblock+1) return;
+
+
+ s->state_out_len = 1;
+ s->state_out_ch = s->k0;
+ BZ_GET_SMALL(k1); BZ_RAND_UPD_MASK;
+ k1 ^= BZ_RAND_MASK; s->nblock_used++;
+ if (s->nblock_used == s->save_nblock+1) continue;
+ if (k1 != s->k0) { s->k0 = k1; continue; };
+
+ s->state_out_len = 2;
+ BZ_GET_SMALL(k1); BZ_RAND_UPD_MASK;
+ k1 ^= BZ_RAND_MASK; s->nblock_used++;
+ if (s->nblock_used == s->save_nblock+1) continue;
+ if (k1 != s->k0) { s->k0 = k1; continue; };
+
+ s->state_out_len = 3;
+ BZ_GET_SMALL(k1); BZ_RAND_UPD_MASK;
+ k1 ^= BZ_RAND_MASK; s->nblock_used++;
+ if (s->nblock_used == s->save_nblock+1) continue;
+ if (k1 != s->k0) { s->k0 = k1; continue; };
+
+ BZ_GET_SMALL(k1); BZ_RAND_UPD_MASK;
+ k1 ^= BZ_RAND_MASK; s->nblock_used++;
+ s->state_out_len = ((Int32)k1) + 4;
+ BZ_GET_SMALL(s->k0); BZ_RAND_UPD_MASK;
+ s->k0 ^= BZ_RAND_MASK; s->nblock_used++;
+ }
+
+ } else {
+
+ while (True) {
+ /* try to finish existing run */
+ while (True) {
+ if (s->strm->avail_out == 0) return;
+ if (s->state_out_len == 0) break;
+ *( (UChar*)(s->strm->next_out) ) = s->state_out_ch;
+ BZ_UPDATE_CRC ( s->calculatedBlockCRC, s->state_out_ch );
+ s->state_out_len--;
+ s->strm->next_out++;
+ s->strm->avail_out--;
+ s->strm->total_out_lo32++;
+ if (s->strm->total_out_lo32 == 0) s->strm->total_out_hi32++;
+ }
+
+ /* can a new run be started? */
+ if (s->nblock_used == s->save_nblock+1) return;
+
+ s->state_out_len = 1;
+ s->state_out_ch = s->k0;
+ BZ_GET_SMALL(k1); s->nblock_used++;
+ if (s->nblock_used == s->save_nblock+1) continue;
+ if (k1 != s->k0) { s->k0 = k1; continue; };
+
+ s->state_out_len = 2;
+ BZ_GET_SMALL(k1); s->nblock_used++;
+ if (s->nblock_used == s->save_nblock+1) continue;
+ if (k1 != s->k0) { s->k0 = k1; continue; };
+
+ s->state_out_len = 3;
+ BZ_GET_SMALL(k1); s->nblock_used++;
+ if (s->nblock_used == s->save_nblock+1) continue;
+ if (k1 != s->k0) { s->k0 = k1; continue; };
+
+ BZ_GET_SMALL(k1); s->nblock_used++;
+ s->state_out_len = ((Int32)k1) + 4;
+ BZ_GET_SMALL(s->k0); s->nblock_used++;
+ }
+
+ }
+}
+
+
+/*---------------------------------------------------*/
+int BZ_API(BZ2_bzDecompress) ( bz_stream *strm )
+{
+ DState* s;
+ if (strm == NULL) return BZ_PARAM_ERROR;
+ s = strm->state;
+ if (s == NULL) return BZ_PARAM_ERROR;
+ if (s->strm != strm) return BZ_PARAM_ERROR;
+
+ while (True) {
+ if (s->state == BZ_X_IDLE) return BZ_SEQUENCE_ERROR;
+ if (s->state == BZ_X_OUTPUT) {
+ if (s->smallDecompress)
+ unRLE_obuf_to_output_SMALL ( s ); else
+ unRLE_obuf_to_output_FAST ( s );
+ if (s->nblock_used == s->save_nblock+1 && s->state_out_len == 0) {
+ BZ_FINALISE_CRC ( s->calculatedBlockCRC );
+ if (s->verbosity >= 3)
+ VPrintf2 ( " {0x%x, 0x%x}", s->storedBlockCRC,
+ s->calculatedBlockCRC );
+ if (s->verbosity >= 2) VPrintf0 ( "]" );
+ if (s->calculatedBlockCRC != s->storedBlockCRC)
+ return BZ_DATA_ERROR;
+ s->calculatedCombinedCRC
+ = (s->calculatedCombinedCRC << 1) |
+ (s->calculatedCombinedCRC >> 31);
+ s->calculatedCombinedCRC ^= s->calculatedBlockCRC;
+ s->state = BZ_X_BLKHDR_1;
+ } else {
+ return BZ_OK;
+ }
+ }
+ if (s->state >= BZ_X_MAGIC_1) {
+ Int32 r = BZ2_decompress ( s );
+ if (r == BZ_STREAM_END) {
+ if (s->verbosity >= 3)
+ VPrintf2 ( "\n combined CRCs: stored = 0x%x, computed = 0x%x",
+ s->storedCombinedCRC, s->calculatedCombinedCRC );
+ if (s->calculatedCombinedCRC != s->storedCombinedCRC)
+ return BZ_DATA_ERROR;
+ return r;
+ }
+ if (s->state != BZ_X_OUTPUT) return r;
+ }
+ }
+
+ AssertH ( 0, 6001 );
+
+ return 0; /*NOTREACHED*/
+}
+
+
+/*---------------------------------------------------*/
+int BZ_API(BZ2_bzDecompressEnd) ( bz_stream *strm )
+{
+ DState* s;
+ if (strm == NULL) return BZ_PARAM_ERROR;
+ s = strm->state;
+ if (s == NULL) return BZ_PARAM_ERROR;
+ if (s->strm != strm) return BZ_PARAM_ERROR;
+
+ if (s->tt != NULL) BZFREE(s->tt);
+ if (s->ll16 != NULL) BZFREE(s->ll16);
+ if (s->ll4 != NULL) BZFREE(s->ll4);
+
+ BZFREE(strm->state);
+ strm->state = NULL;
+
+ return BZ_OK;
+}
+
+
+#ifndef BZ_NO_STDIO
+/*---------------------------------------------------*/
+/*--- File I/O stuff ---*/
+/*---------------------------------------------------*/
+
+#define BZ_SETERR(eee) \
+{ \
+ if (bzerror != NULL) *bzerror = eee; \
+ if (bzf != NULL) bzf->lastErr = eee; \
+}
+
+typedef
+ struct {
+ FILE* handle;
+ Char buf[BZ_MAX_UNUSED];
+ Int32 bufN;
+ Bool writing;
+ bz_stream strm;
+ Int32 lastErr;
+ Bool initialisedOk;
+ }
+ bzFile;
+
+
+/*---------------------------------------------*/
+static Bool myfeof ( FILE* f )
+{
+ Int32 c = fgetc ( f );
+ if (c == EOF) return True;
+ ungetc ( c, f );
+ return False;
+}
+
+
+/*---------------------------------------------------*/
+BZFILE* BZ_API(BZ2_bzWriteOpen)
+ ( int* bzerror,
+ FILE* f,
+ int blockSize100k,
+ int verbosity,
+ int workFactor )
+{
+ Int32 ret;
+ bzFile* bzf = NULL;
+
+ BZ_SETERR(BZ_OK);
+
+ if (f == NULL ||
+ (blockSize100k < 1 || blockSize100k > 9) ||
+ (workFactor < 0 || workFactor > 250) ||
+ (verbosity < 0 || verbosity > 4))
+ { BZ_SETERR(BZ_PARAM_ERROR); return NULL; };
+
+ if (ferror(f))
+ { BZ_SETERR(BZ_IO_ERROR); return NULL; };
+
+ bzf = malloc ( sizeof(bzFile) );
+ if (bzf == NULL)
+ { BZ_SETERR(BZ_MEM_ERROR); return NULL; };
+
+ BZ_SETERR(BZ_OK);
+ bzf->initialisedOk = False;
+ bzf->bufN = 0;
+ bzf->handle = f;
+ bzf->writing = True;
+ bzf->strm.bzalloc = NULL;
+ bzf->strm.bzfree = NULL;
+ bzf->strm.opaque = NULL;
+
+ if (workFactor == 0) workFactor = 30;
+ ret = BZ2_bzCompressInit ( &(bzf->strm), blockSize100k,
+ verbosity, workFactor );
+ if (ret != BZ_OK)
+ { BZ_SETERR(ret); free(bzf); return NULL; };
+
+ bzf->strm.avail_in = 0;
+ bzf->initialisedOk = True;
+ return bzf;
+}
+
+
+
+/*---------------------------------------------------*/
+void BZ_API(BZ2_bzWrite)
+ ( int* bzerror,
+ BZFILE* b,
+ void* buf,
+ int len )
+{
+ Int32 n, n2, ret;
+ bzFile* bzf = (bzFile*)b;
+
+ BZ_SETERR(BZ_OK);
+ if (bzf == NULL || buf == NULL || len < 0)
+ { BZ_SETERR(BZ_PARAM_ERROR); return; };
+ if (!(bzf->writing))
+ { BZ_SETERR(BZ_SEQUENCE_ERROR); return; };
+ if (ferror(bzf->handle))
+ { BZ_SETERR(BZ_IO_ERROR); return; };
+
+ if (len == 0)
+ { BZ_SETERR(BZ_OK); return; };
+
+ bzf->strm.avail_in = len;
+ bzf->strm.next_in = buf;
+
+ while (True) {
+ bzf->strm.avail_out = BZ_MAX_UNUSED;
+ bzf->strm.next_out = bzf->buf;
+ ret = BZ2_bzCompress ( &(bzf->strm), BZ_RUN );
+ if (ret != BZ_RUN_OK)
+ { BZ_SETERR(ret); return; };
+
+ if (bzf->strm.avail_out < BZ_MAX_UNUSED) {
+ n = BZ_MAX_UNUSED - bzf->strm.avail_out;
+ n2 = fwrite ( (void*)(bzf->buf), sizeof(UChar),
+ n, bzf->handle );
+ if (n != n2 || ferror(bzf->handle))
+ { BZ_SETERR(BZ_IO_ERROR); return; };
+ }
+
+ if (bzf->strm.avail_in == 0)
+ { BZ_SETERR(BZ_OK); return; };
+ }
+}
+
+
+/*---------------------------------------------------*/
+void BZ_API(BZ2_bzWriteClose)
+ ( int* bzerror,
+ BZFILE* b,
+ int abandon,
+ unsigned int* nbytes_in,
+ unsigned int* nbytes_out )
+{
+ BZ2_bzWriteClose64 ( bzerror, b, abandon,
+ nbytes_in, NULL, nbytes_out, NULL );
+}
+
+
+void BZ_API(BZ2_bzWriteClose64)
+ ( int* bzerror,
+ BZFILE* b,
+ int abandon,
+ unsigned int* nbytes_in_lo32,
+ unsigned int* nbytes_in_hi32,
+ unsigned int* nbytes_out_lo32,
+ unsigned int* nbytes_out_hi32 )
+{
+ Int32 n, n2, ret;
+ bzFile* bzf = (bzFile*)b;
+
+ if (bzf == NULL)
+ { BZ_SETERR(BZ_OK); return; };
+ if (!(bzf->writing))
+ { BZ_SETERR(BZ_SEQUENCE_ERROR); return; };
+ if (ferror(bzf->handle))
+ { BZ_SETERR(BZ_IO_ERROR); return; };
+
+ if (nbytes_in_lo32 != NULL) *nbytes_in_lo32 = 0;
+ if (nbytes_in_hi32 != NULL) *nbytes_in_hi32 = 0;
+ if (nbytes_out_lo32 != NULL) *nbytes_out_lo32 = 0;
+ if (nbytes_out_hi32 != NULL) *nbytes_out_hi32 = 0;
+
+ if ((!abandon) && bzf->lastErr == BZ_OK) {
+ while (True) {
+ bzf->strm.avail_out = BZ_MAX_UNUSED;
+ bzf->strm.next_out = bzf->buf;
+ ret = BZ2_bzCompress ( &(bzf->strm), BZ_FINISH );
+ if (ret != BZ_FINISH_OK && ret != BZ_STREAM_END)
+ { BZ_SETERR(ret); return; };
+
+ if (bzf->strm.avail_out < BZ_MAX_UNUSED) {
+ n = BZ_MAX_UNUSED - bzf->strm.avail_out;
+ n2 = fwrite ( (void*)(bzf->buf), sizeof(UChar),
+ n, bzf->handle );
+ if (n != n2 || ferror(bzf->handle))
+ { BZ_SETERR(BZ_IO_ERROR); return; };
+ }
+
+ if (ret == BZ_STREAM_END) break;
+ }
+ }
+
+ if ( !abandon && !ferror ( bzf->handle ) ) {
+ fflush ( bzf->handle );
+ if (ferror(bzf->handle))
+ { BZ_SETERR(BZ_IO_ERROR); return; };
+ }
+
+ if (nbytes_in_lo32 != NULL)
+ *nbytes_in_lo32 = bzf->strm.total_in_lo32;
+ if (nbytes_in_hi32 != NULL)
+ *nbytes_in_hi32 = bzf->strm.total_in_hi32;
+ if (nbytes_out_lo32 != NULL)
+ *nbytes_out_lo32 = bzf->strm.total_out_lo32;
+ if (nbytes_out_hi32 != NULL)
+ *nbytes_out_hi32 = bzf->strm.total_out_hi32;
+
+ BZ_SETERR(BZ_OK);
+ BZ2_bzCompressEnd ( &(bzf->strm) );
+ free ( bzf );
+}
+
+
+/*---------------------------------------------------*/
+BZFILE* BZ_API(BZ2_bzReadOpen)
+ ( int* bzerror,
+ FILE* f,
+ int verbosity,
+ int small,
+ void* unused,
+ int nUnused )
+{
+ bzFile* bzf = NULL;
+ int ret;
+
+ BZ_SETERR(BZ_OK);
+
+ if (f == NULL ||
+ (small != 0 && small != 1) ||
+ (verbosity < 0 || verbosity > 4) ||
+ (unused == NULL && nUnused != 0) ||
+ (unused != NULL && (nUnused < 0 || nUnused > BZ_MAX_UNUSED)))
+ { BZ_SETERR(BZ_PARAM_ERROR); return NULL; };
+
+ if (ferror(f))
+ { BZ_SETERR(BZ_IO_ERROR); return NULL; };
+
+ bzf = malloc ( sizeof(bzFile) );
+ if (bzf == NULL)
+ { BZ_SETERR(BZ_MEM_ERROR); return NULL; };
+
+ BZ_SETERR(BZ_OK);
+
+ bzf->initialisedOk = False;
+ bzf->handle = f;
+ bzf->bufN = 0;
+ bzf->writing = False;
+ bzf->strm.bzalloc = NULL;
+ bzf->strm.bzfree = NULL;
+ bzf->strm.opaque = NULL;
+
+ while (nUnused > 0) {
+ bzf->buf[bzf->bufN] = *((UChar*)(unused)); bzf->bufN++;
+ unused = ((void*)( 1 + ((UChar*)(unused)) ));
+ nUnused--;
+ }
+
+ ret = BZ2_bzDecompressInit ( &(bzf->strm), verbosity, small );
+ if (ret != BZ_OK)
+ { BZ_SETERR(ret); free(bzf); return NULL; };
+
+ bzf->strm.avail_in = bzf->bufN;
+ bzf->strm.next_in = bzf->buf;
+
+ bzf->initialisedOk = True;
+ return bzf;
+}
+
+
+/*---------------------------------------------------*/
+void BZ_API(BZ2_bzReadClose) ( int *bzerror, BZFILE *b )
+{
+ bzFile* bzf = (bzFile*)b;
+
+ BZ_SETERR(BZ_OK);
+ if (bzf == NULL)
+ { BZ_SETERR(BZ_OK); return; };
+
+ if (bzf->writing)
+ { BZ_SETERR(BZ_SEQUENCE_ERROR); return; };
+
+ if (bzf->initialisedOk)
+ (void)BZ2_bzDecompressEnd ( &(bzf->strm) );
+ free ( bzf );
+}
+
+
+/*---------------------------------------------------*/
+int BZ_API(BZ2_bzRead)
+ ( int* bzerror,
+ BZFILE* b,
+ void* buf,
+ int len )
+{
+ Int32 n, ret;
+ bzFile* bzf = (bzFile*)b;
+
+ BZ_SETERR(BZ_OK);
+
+ if (bzf == NULL || buf == NULL || len < 0)
+ { BZ_SETERR(BZ_PARAM_ERROR); return 0; };
+
+ if (bzf->writing)
+ { BZ_SETERR(BZ_SEQUENCE_ERROR); return 0; };
+
+ if (len == 0)
+ { BZ_SETERR(BZ_OK); return 0; };
+
+ bzf->strm.avail_out = len;
+ bzf->strm.next_out = buf;
+
+ while (True) {
+
+ if (ferror(bzf->handle))
+ { BZ_SETERR(BZ_IO_ERROR); return 0; };
+
+ if (bzf->strm.avail_in == 0 && !myfeof(bzf->handle)) {
+ n = fread ( bzf->buf, sizeof(UChar),
+ BZ_MAX_UNUSED, bzf->handle );
+ if (ferror(bzf->handle))
+ { BZ_SETERR(BZ_IO_ERROR); return 0; };
+ bzf->bufN = n;
+ bzf->strm.avail_in = bzf->bufN;
+ bzf->strm.next_in = bzf->buf;
+ }
+
+ ret = BZ2_bzDecompress ( &(bzf->strm) );
+
+ if (ret != BZ_OK && ret != BZ_STREAM_END)
+ { BZ_SETERR(ret); return 0; };
+
+ if (ret == BZ_OK && myfeof(bzf->handle) &&
+ bzf->strm.avail_in == 0 && bzf->strm.avail_out > 0)
+ { BZ_SETERR(BZ_UNEXPECTED_EOF); return 0; };
+
+ if (ret == BZ_STREAM_END)
+ { BZ_SETERR(BZ_STREAM_END);
+ return len - bzf->strm.avail_out; };
+ if (bzf->strm.avail_out == 0)
+ { BZ_SETERR(BZ_OK); return len; };
+
+ }
+
+ return 0; /*not reached*/
+}
+
+
+/*---------------------------------------------------*/
+void BZ_API(BZ2_bzReadGetUnused)
+ ( int* bzerror,
+ BZFILE* b,
+ void** unused,
+ int* nUnused )
+{
+ bzFile* bzf = (bzFile*)b;
+ if (bzf == NULL)
+ { BZ_SETERR(BZ_PARAM_ERROR); return; };
+ if (bzf->lastErr != BZ_STREAM_END)
+ { BZ_SETERR(BZ_SEQUENCE_ERROR); return; };
+ if (unused == NULL || nUnused == NULL)
+ { BZ_SETERR(BZ_PARAM_ERROR); return; };
+
+ BZ_SETERR(BZ_OK);
+ *nUnused = bzf->strm.avail_in;
+ *unused = bzf->strm.next_in;
+}
+#endif
+
+
+/*---------------------------------------------------*/
+/*--- Misc convenience stuff ---*/
+/*---------------------------------------------------*/
+#ifndef BZ_NO_COMPRESS
+/*---------------------------------------------------*/
+int BZ_API(BZ2_bzBuffToBuffCompress)
+ ( char* dest,
+ unsigned int* destLen,
+ char* source,
+ unsigned int sourceLen,
+ int blockSize100k,
+ int verbosity,
+ int workFactor )
+{
+ bz_stream strm;
+ int ret;
+
+ if (dest == NULL || destLen == NULL ||
+ source == NULL ||
+ blockSize100k < 1 || blockSize100k > 9 ||
+ verbosity < 0 || verbosity > 4 ||
+ workFactor < 0 || workFactor > 250)
+ return BZ_PARAM_ERROR;
+
+ if (workFactor == 0) workFactor = 30;
+ strm.bzalloc = NULL;
+ strm.bzfree = NULL;
+ strm.opaque = NULL;
+ ret = BZ2_bzCompressInit ( &strm, blockSize100k,
+ verbosity, workFactor );
+ if (ret != BZ_OK) return ret;
+
+ strm.next_in = source;
+ strm.next_out = dest;
+ strm.avail_in = sourceLen;
+ strm.avail_out = *destLen;
+
+ ret = BZ2_bzCompress ( &strm, BZ_FINISH );
+ if (ret == BZ_FINISH_OK) goto output_overflow;
+ if (ret != BZ_STREAM_END) goto errhandler;
+
+ /* normal termination */
+ *destLen -= strm.avail_out;
+ BZ2_bzCompressEnd ( &strm );
+ return BZ_OK;
+
+ output_overflow:
+ BZ2_bzCompressEnd ( &strm );
+ return BZ_OUTBUFF_FULL;
+
+ errhandler:
+ BZ2_bzCompressEnd ( &strm );
+ return ret;
+}
+#endif /* BZ_NO_COMPRESS */
+
+/*---------------------------------------------------*/
+int BZ_API(BZ2_bzBuffToBuffDecompress)
+ ( char* dest,
+ unsigned int* destLen,
+ char* source,
+ unsigned int sourceLen,
+ int small,
+ int verbosity )
+{
+ bz_stream strm;
+ int ret;
+
+ if (destLen == NULL || source == NULL)
+ return BZ_PARAM_ERROR;
+
+ strm.bzalloc = NULL;
+ strm.bzfree = NULL;
+ strm.opaque = NULL;
+ ret = BZ2_bzDecompressInit ( &strm, verbosity, small );
+ if (ret != BZ_OK) return ret;
+
+ strm.next_in = source;
+ strm.next_out = dest;
+ strm.avail_in = sourceLen;
+ strm.avail_out = *destLen;
+
+ ret = BZ2_bzDecompress ( &strm );
+ if (ret == BZ_OK) goto output_overflow_or_eof;
+ if (ret != BZ_STREAM_END) goto errhandler;
+
+ /* normal termination */
+ *destLen -= strm.avail_out;
+ BZ2_bzDecompressEnd ( &strm );
+ return BZ_OK;
+
+ output_overflow_or_eof:
+ if (strm.avail_out > 0) {
+ BZ2_bzDecompressEnd ( &strm );
+ return BZ_UNEXPECTED_EOF;
+ } else {
+ BZ2_bzDecompressEnd ( &strm );
+ return BZ_OUTBUFF_FULL;
+ };
+
+ errhandler:
+ BZ2_bzDecompressEnd ( &strm );
+ return ret;
+}
+
+
+/*---------------------------------------------------*/
+/*--
+ Code contributed by Yoshioka Tsuneo
+ (QWF00133@niftyserve.or.jp/tsuneo-y@is.aist-nara.ac.jp),
+ to support better zlib compatibility.
+ This code is not _officially_ part of libbzip2 (yet);
+ I haven't tested it, documented it, or considered the
+ threading-safeness of it.
+ If this code breaks, please contact both Yoshioka and me.
+--*/
+/*---------------------------------------------------*/
+
+/*---------------------------------------------------*/
+/*--
+ return version like "0.9.0c".
+--*/
+const char * BZ_API(BZ2_bzlibVersion)(void)
+{
+ return BZ_VERSION;
+}
+
+
+#ifndef BZ_NO_STDIO
+/*---------------------------------------------------*/
+
+#if defined(_WIN32) || defined(OS2) || defined(MSDOS)
+# include <fcntl.h>
+# include <io.h>
+# define SET_BINARY_MODE(file) setmode(fileno(file),O_BINARY)
+#else
+# define SET_BINARY_MODE(file)
+#endif
+static
+BZFILE * bzopen_or_bzdopen
+ ( const char *path, /* no use when bzdopen */
+ int fd, /* no use when bzdopen */
+ const char *mode,
+ int open_mode) /* bzopen: 0, bzdopen:1 */
+{
+ int bzerr;
+ char unused[BZ_MAX_UNUSED];
+ int blockSize100k = 9;
+ int writing = 0;
+ char mode2[10] = "";
+ FILE *fp = NULL;
+ BZFILE *bzfp = NULL;
+ int verbosity = 0;
+ int workFactor = 30;
+ int smallMode = 0;
+ int nUnused = 0;
+
+ if (mode == NULL) return NULL;
+ while (*mode) {
+ switch (*mode) {
+ case 'r':
+ writing = 0; break;
+ case 'w':
+ writing = 1; break;
+ case 's':
+ smallMode = 1; break;
+ default:
+ if (isdigit((int)(*mode))) {
+ blockSize100k = *mode-BZ_HDR_0;
+ }
+ }
+ mode++;
+ }
+ strcat(mode2, writing ? "w" : "r" );
+ strcat(mode2,"b"); /* binary mode */
+
+ if (open_mode==0) {
+ if (path==NULL || strcmp(path,"")==0) {
+ fp = (writing ? stdout : stdin);
+ SET_BINARY_MODE(fp);
+ } else {
+ fp = fopen(path,mode2);
+ }
+ } else {
+#ifdef BZ_STRICT_ANSI
+ fp = NULL;
+#else
+ fp = fdopen(fd,mode2);
+#endif
+ }
+ if (fp == NULL) return NULL;
+
+ if (writing) {
+ /* Guard against total chaos and anarchy -- JRS */
+ if (blockSize100k < 1) blockSize100k = 1;
+ if (blockSize100k > 9) blockSize100k = 9;
+ bzfp = BZ2_bzWriteOpen(&bzerr,fp,blockSize100k,
+ verbosity,workFactor);
+ } else {
+ bzfp = BZ2_bzReadOpen(&bzerr,fp,verbosity,smallMode,
+ unused,nUnused);
+ }
+ if (bzfp == NULL) {
+ if (fp != stdin && fp != stdout) fclose(fp);
+ return NULL;
+ }
+ return bzfp;
+}
+
+
+/*---------------------------------------------------*/
+/*--
+ open file for read or write.
+ ex) bzopen("file","w9")
+ case path="" or NULL => use stdin or stdout.
+--*/
+BZFILE * BZ_API(BZ2_bzopen)
+ ( const char *path,
+ const char *mode )
+{
+ return bzopen_or_bzdopen(path,-1,mode,/*bzopen*/0);
+}
+
+
+/*---------------------------------------------------*/
+BZFILE * BZ_API(BZ2_bzdopen)
+ ( int fd,
+ const char *mode )
+{
+ return bzopen_or_bzdopen(NULL,fd,mode,/*bzdopen*/1);
+}
+
+
+/*---------------------------------------------------*/
+int BZ_API(BZ2_bzread) (BZFILE* b, void* buf, int len )
+{
+ int bzerr, nread;
+ if (((bzFile*)b)->lastErr == BZ_STREAM_END) return 0;
+ nread = BZ2_bzRead(&bzerr,b,buf,len);
+ if (bzerr == BZ_OK || bzerr == BZ_STREAM_END) {
+ return nread;
+ } else {
+ return -1;
+ }
+}
+
+
+/*---------------------------------------------------*/
+int BZ_API(BZ2_bzwrite) (BZFILE* b, void* buf, int len )
+{
+ int bzerr;
+
+ BZ2_bzWrite(&bzerr,b,buf,len);
+ if(bzerr == BZ_OK){
+ return len;
+ }else{
+ return -1;
+ }
+}
+
+
+/*---------------------------------------------------*/
+int BZ_API(BZ2_bzflush) (BZFILE *b)
+{
+ /* do nothing now... */
+ return 0;
+}
+
+
+/*---------------------------------------------------*/
+void BZ_API(BZ2_bzclose) (BZFILE* b)
+{
+ int bzerr;
+ FILE *fp = ((bzFile *)b)->handle;
+
+ if (b==NULL) {return;}
+ if(((bzFile*)b)->writing){
+ BZ2_bzWriteClose(&bzerr,b,0,NULL,NULL);
+ if(bzerr != BZ_OK){
+ BZ2_bzWriteClose(NULL,b,1,NULL,NULL);
+ }
+ }else{
+ BZ2_bzReadClose(&bzerr,b);
+ }
+ if(fp!=stdin && fp!=stdout){
+ fclose(fp);
+ }
+}
+
+
+/*---------------------------------------------------*/
+/*--
+ return last error code
+--*/
+static char *bzerrorstrings[] = {
+ "OK"
+ ,"SEQUENCE_ERROR"
+ ,"PARAM_ERROR"
+ ,"MEM_ERROR"
+ ,"DATA_ERROR"
+ ,"DATA_ERROR_MAGIC"
+ ,"IO_ERROR"
+ ,"UNEXPECTED_EOF"
+ ,"OUTBUFF_FULL"
+ ,"CONFIG_ERROR"
+ ,"???" /* for future */
+ ,"???" /* for future */
+ ,"???" /* for future */
+ ,"???" /* for future */
+ ,"???" /* for future */
+ ,"???" /* for future */
+};
+
+
+const char * BZ_API(BZ2_bzerror) (BZFILE *b, int *errnum)
+{
+ int err = ((bzFile *)b)->lastErr;
+
+ if(err>0) err = 0;
+ *errnum = err;
+ return bzerrorstrings[err*-1];
+}
+#endif
+
+
+/*-------------------------------------------------------------*/
+/*--- end bzlib.c ---*/
+/*-------------------------------------------------------------*/
+
+#endif /* CONFIG_BZIP2 */