+++ /dev/null
-
-/*-------------------------------------------------------------*/
-/*--- 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) 1996-2000 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.
---*/
-
-#ifdef BZ_DECOMPRESS_ONLY
-#ifndef __NTDRIVER__
- #define __NTDRIVER__
-#endif
-#include <ntddk.h>
-#include <debug.h>
-#endif
-
-#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, 21 March 2000.\n\n",
- errcode,
- BZ2_bzlibVersion()
- );
- 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 )
-{
- return ExAllocatePool( PagedPool, items * size );
-}
-
-static
-void default_bzfree ( void* opaque, void* addr )
-{
- ExFreePool( addr );
-}
-
-#ifndef BZ_DECOMPRESS_ONLY
-
-/*---------------------------------------------------*/
-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_DECOMPRESS_ONLY
-
-/*---------------------------------------------------*/
-/*--- 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;
-}
-
-#ifndef BZ_DECOMPRESS_ONLY
-
-/*---------------------------------------------------*/
-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 */
- }
-}
-
-#endif // BZ_DECOMPRESS_ONLY
-
-/*---------------------------------------------------*/
-__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) {
-#ifndef BZ_DECOMPRESS_ONLY
- if (s->smallDecompress)
- unRLE_obuf_to_output_SMALL ( s ); else
- unRLE_obuf_to_output_FAST ( s );
-#else
- unRLE_obuf_to_output_SMALL ( s );
-#endif
- 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
-
-#ifndef BZ_DECOMPRESS_ONLY
-
-/*---------------------------------------------------*/
-/*--- Misc convenience stuff ---*/
-/*---------------------------------------------------*/
-
-/*---------------------------------------------------*/
-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;
- CHECKPOINT;
- 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;
- CHECKPOINT;
- ret = BZ2_bzCompressInit ( &strm, blockSize100k,
- verbosity, workFactor );
- if (ret != BZ_OK) return ret;
- CHECKPOINT;
- 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;
- CHECKPOINT;
- BZ2_bzCompressEnd ( &strm );
- return BZ_OK;
-
- output_overflow:
- CHECKPOINT;
- BZ2_bzCompressEnd ( &strm );
- return BZ_OUTBUFF_FULL;
-
- errhandler:
- CHECKPOINT;
- BZ2_bzCompressEnd ( &strm );
- return ret;
-}
-
-#endif // BZ_DECOMPRESS_0NLY
-
-/*---------------------------------------------------*/
-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 (dest == NULL || destLen == NULL ||
- source == NULL ||
- (small != 0 && small != 1) ||
- verbosity < 0 || verbosity > 4)
- 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-'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 ---*/
-/*-------------------------------------------------------------*/
projects / reactos.git / blobdiff