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-rw-r--r--archival/bunzip2.c2340
1 files changed, 2340 insertions, 0 deletions
diff --git a/archival/bunzip2.c b/archival/bunzip2.c
new file mode 100644
index 000000000..757654dab
--- /dev/null
+++ b/archival/bunzip2.c
@@ -0,0 +1,2340 @@
+/* Modified for busybox by Glenn McGrath <bug1@optushome.com.au> */
+/*--
+ 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.
+--*/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <busybox.h>
+
+//#define TRUE 1
+//#define FALSE 0
+
+#define MTFA_SIZE 4096
+#define MTFL_SIZE 16
+#define BZ_N_GROUPS 6
+#define BZ_G_SIZE 50
+#define BZ_MAX_ALPHA_SIZE 258
+
+#define BZ_OK 0
+#define BZ_RUN_OK 1
+#define BZ_FLUSH_OK 2
+#define BZ_FINISH_OK 3
+#define BZ_STREAM_END 4
+#define BZ_SEQUENCE_ERROR (-1)
+#define BZ_PARAM_ERROR (-2)
+#define BZ_MEM_ERROR (-3)
+#define BZ_DATA_ERROR (-4)
+#define BZ_DATA_ERROR_MAGIC (-5)
+#define BZ_IO_ERROR (-6)
+#define BZ_UNEXPECTED_EOF (-7)
+#define BZ_OUTBUFF_FULL (-8)
+#define BZ_CONFIG_ERROR (-9)
+
+#define BZ_RUNA 0
+#define BZ_RUNB 1
+
+#define BZ_MAX_UNUSED 5000
+#define FILE_NAME_LEN 1034
+/*-- states for decompression. --*/
+
+#define BZ_X_IDLE 1
+#define BZ_X_OUTPUT 2
+
+#define BZ_X_MAGIC_1 10
+#define BZ_X_MAGIC_2 11
+#define BZ_X_MAGIC_3 12
+#define BZ_X_MAGIC_4 13
+#define BZ_X_BLKHDR_1 14
+#define BZ_X_BLKHDR_2 15
+#define BZ_X_BLKHDR_3 16
+#define BZ_X_BLKHDR_4 17
+#define BZ_X_BLKHDR_5 18
+#define BZ_X_BLKHDR_6 19
+#define BZ_X_BCRC_1 20
+#define BZ_X_BCRC_2 21
+#define BZ_X_BCRC_3 22
+#define BZ_X_BCRC_4 23
+#define BZ_X_RANDBIT 24
+#define BZ_X_ORIGPTR_1 25
+#define BZ_X_ORIGPTR_2 26
+#define BZ_X_ORIGPTR_3 27
+#define BZ_X_MAPPING_1 28
+#define BZ_X_MAPPING_2 29
+#define BZ_X_SELECTOR_1 30
+#define BZ_X_SELECTOR_2 31
+#define BZ_X_SELECTOR_3 32
+#define BZ_X_CODING_1 33
+#define BZ_X_CODING_2 34
+#define BZ_X_CODING_3 35
+#define BZ_X_MTF_1 36
+#define BZ_X_MTF_2 37
+#define BZ_X_MTF_3 38
+#define BZ_X_MTF_4 39
+#define BZ_X_MTF_5 40
+#define BZ_X_MTF_6 41
+#define BZ_X_ENDHDR_2 42
+#define BZ_X_ENDHDR_3 43
+#define BZ_X_ENDHDR_4 44
+#define BZ_X_ENDHDR_5 45
+#define BZ_X_ENDHDR_6 46
+#define BZ_X_CCRC_1 47
+#define BZ_X_CCRC_2 48
+#define BZ_X_CCRC_3 49
+#define BZ_X_CCRC_4 50
+
+#define BZ_MAX_CODE_LEN 23
+#define BZ_VERSION "1.0.1, 23-June-2000"
+#define OM_TEST 3
+#define SM_F2F 3
+
+typedef struct {
+ char *next_in;
+ unsigned int avail_in;
+ unsigned int total_in_lo32;
+ unsigned int total_in_hi32;
+
+ char *next_out;
+ unsigned int avail_out;
+ unsigned int total_out_lo32;
+ unsigned int total_out_hi32;
+
+ void *state;
+
+ void *(*bzalloc)(void *,int,int);
+ void (*bzfree)(void *,void *);
+ void *opaque;
+} bz_stream;
+
+typedef struct {
+ bz_stream strm;
+ FILE *handle;
+ unsigned char initialisedOk;
+ unsigned char writing;
+ char buf[BZ_MAX_UNUSED];
+ int lastErr;
+ int bufN;
+} bzFile;
+
+/*-- Structure holding all the decompression-side stuff. --*/
+typedef struct {
+ /* pointer back to the struct bz_stream */
+ bz_stream* strm;
+
+ /* state indicator for this stream */
+ int state;
+
+ /* for doing the final run-length decoding */
+ unsigned char state_out_ch;
+ int state_out_len;
+ unsigned char blockRandomised;
+ int rNToGo;
+ int rTPos;
+
+ /* the buffer for bit stream reading */
+ unsigned int bsBuff;
+ int bsLive;
+
+ /* misc administratium */
+ int blockSize100k;
+ unsigned char smallDecompress;
+ int currBlockNo;
+ int verbosity;
+
+ /* for undoing the Burrows-Wheeler transform */
+ int origPtr;
+ unsigned int tPos;
+ int k0;
+ int unzftab[256];
+ int nblock_used;
+ int cftab[257];
+ int cftabCopy[257];
+
+ /* for undoing the Burrows-Wheeler transform (FAST) */
+ unsigned int *tt;
+
+ /* for undoing the Burrows-Wheeler transform (SMALL) */
+ unsigned short *ll16;
+ unsigned char *ll4;
+
+ /* stored and calculated CRCs */
+ unsigned int storedBlockCRC;
+ unsigned int storedCombinedCRC;
+ unsigned int calculatedBlockCRC;
+ unsigned int calculatedCombinedCRC;
+
+ /* map of bytes used in block */
+ int nInUse;
+ unsigned char inUse[256];
+ unsigned char inUse16[16];
+ unsigned char seqToUnseq[256];
+
+ /* for decoding the MTF values */
+ unsigned char mtfa [MTFA_SIZE];
+ unsigned char selector [2 + (900000 / BZ_G_SIZE)];
+ unsigned char selectorMtf[2 + (900000 / BZ_G_SIZE)];
+ unsigned char len [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
+ int mtfbase[256 / MTFL_SIZE];
+
+ int limit [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
+ int base [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
+ int perm [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
+ int minLens[BZ_N_GROUPS];
+
+ /* save area for scalars in the main decompress code */
+ int save_i;
+ int save_j;
+ int save_t;
+ int save_alphaSize;
+ int save_nGroups;
+ int save_nSelectors;
+ int save_EOB;
+ int save_groupNo;
+ int save_groupPos;
+ int save_nextSym;
+ int save_nblockMAX;
+ int save_nblock;
+ int save_es;
+ int save_N;
+ int save_curr;
+ int save_zt;
+ int save_zn;
+ int save_zvec;
+ int save_zj;
+ int save_gSel;
+ int save_gMinlen;
+ int *save_gLimit;
+ int *save_gBase;
+ int *save_gPerm;
+} DState;
+
+int BZ2_rNums[512];
+//int verbosity_level;
+unsigned char smallMode;
+unsigned char noisy;
+char *progName;
+char inName[FILE_NAME_LEN];
+char outName[FILE_NAME_LEN];
+int srcMode;
+int opMode;
+unsigned char deleteOutputOnInterrupt;
+FILE *outputHandleJustInCase;
+int numFileNames;
+int numFilesProcessed;
+int exitValue;
+
+unsigned int BZ2_crc32Table[256] = {
+
+ /*-- Ugly, innit? --*/
+
+ 0x00000000L, 0x04c11db7L, 0x09823b6eL, 0x0d4326d9L,
+ 0x130476dcL, 0x17c56b6bL, 0x1a864db2L, 0x1e475005L,
+ 0x2608edb8L, 0x22c9f00fL, 0x2f8ad6d6L, 0x2b4bcb61L,
+ 0x350c9b64L, 0x31cd86d3L, 0x3c8ea00aL, 0x384fbdbdL,
+ 0x4c11db70L, 0x48d0c6c7L, 0x4593e01eL, 0x4152fda9L,
+ 0x5f15adacL, 0x5bd4b01bL, 0x569796c2L, 0x52568b75L,
+ 0x6a1936c8L, 0x6ed82b7fL, 0x639b0da6L, 0x675a1011L,
+ 0x791d4014L, 0x7ddc5da3L, 0x709f7b7aL, 0x745e66cdL,
+ 0x9823b6e0L, 0x9ce2ab57L, 0x91a18d8eL, 0x95609039L,
+ 0x8b27c03cL, 0x8fe6dd8bL, 0x82a5fb52L, 0x8664e6e5L,
+ 0xbe2b5b58L, 0xbaea46efL, 0xb7a96036L, 0xb3687d81L,
+ 0xad2f2d84L, 0xa9ee3033L, 0xa4ad16eaL, 0xa06c0b5dL,
+ 0xd4326d90L, 0xd0f37027L, 0xddb056feL, 0xd9714b49L,
+ 0xc7361b4cL, 0xc3f706fbL, 0xceb42022L, 0xca753d95L,
+ 0xf23a8028L, 0xf6fb9d9fL, 0xfbb8bb46L, 0xff79a6f1L,
+ 0xe13ef6f4L, 0xe5ffeb43L, 0xe8bccd9aL, 0xec7dd02dL,
+ 0x34867077L, 0x30476dc0L, 0x3d044b19L, 0x39c556aeL,
+ 0x278206abL, 0x23431b1cL, 0x2e003dc5L, 0x2ac12072L,
+ 0x128e9dcfL, 0x164f8078L, 0x1b0ca6a1L, 0x1fcdbb16L,
+ 0x018aeb13L, 0x054bf6a4L, 0x0808d07dL, 0x0cc9cdcaL,
+ 0x7897ab07L, 0x7c56b6b0L, 0x71159069L, 0x75d48ddeL,
+ 0x6b93dddbL, 0x6f52c06cL, 0x6211e6b5L, 0x66d0fb02L,
+ 0x5e9f46bfL, 0x5a5e5b08L, 0x571d7dd1L, 0x53dc6066L,
+ 0x4d9b3063L, 0x495a2dd4L, 0x44190b0dL, 0x40d816baL,
+ 0xaca5c697L, 0xa864db20L, 0xa527fdf9L, 0xa1e6e04eL,
+ 0xbfa1b04bL, 0xbb60adfcL, 0xb6238b25L, 0xb2e29692L,
+ 0x8aad2b2fL, 0x8e6c3698L, 0x832f1041L, 0x87ee0df6L,
+ 0x99a95df3L, 0x9d684044L, 0x902b669dL, 0x94ea7b2aL,
+ 0xe0b41de7L, 0xe4750050L, 0xe9362689L, 0xedf73b3eL,
+ 0xf3b06b3bL, 0xf771768cL, 0xfa325055L, 0xfef34de2L,
+ 0xc6bcf05fL, 0xc27dede8L, 0xcf3ecb31L, 0xcbffd686L,
+ 0xd5b88683L, 0xd1799b34L, 0xdc3abdedL, 0xd8fba05aL,
+ 0x690ce0eeL, 0x6dcdfd59L, 0x608edb80L, 0x644fc637L,
+ 0x7a089632L, 0x7ec98b85L, 0x738aad5cL, 0x774bb0ebL,
+ 0x4f040d56L, 0x4bc510e1L, 0x46863638L, 0x42472b8fL,
+ 0x5c007b8aL, 0x58c1663dL, 0x558240e4L, 0x51435d53L,
+ 0x251d3b9eL, 0x21dc2629L, 0x2c9f00f0L, 0x285e1d47L,
+ 0x36194d42L, 0x32d850f5L, 0x3f9b762cL, 0x3b5a6b9bL,
+ 0x0315d626L, 0x07d4cb91L, 0x0a97ed48L, 0x0e56f0ffL,
+ 0x1011a0faL, 0x14d0bd4dL, 0x19939b94L, 0x1d528623L,
+ 0xf12f560eL, 0xf5ee4bb9L, 0xf8ad6d60L, 0xfc6c70d7L,
+ 0xe22b20d2L, 0xe6ea3d65L, 0xeba91bbcL, 0xef68060bL,
+ 0xd727bbb6L, 0xd3e6a601L, 0xdea580d8L, 0xda649d6fL,
+ 0xc423cd6aL, 0xc0e2d0ddL, 0xcda1f604L, 0xc960ebb3L,
+ 0xbd3e8d7eL, 0xb9ff90c9L, 0xb4bcb610L, 0xb07daba7L,
+ 0xae3afba2L, 0xaafbe615L, 0xa7b8c0ccL, 0xa379dd7bL,
+ 0x9b3660c6L, 0x9ff77d71L, 0x92b45ba8L, 0x9675461fL,
+ 0x8832161aL, 0x8cf30badL, 0x81b02d74L, 0x857130c3L,
+ 0x5d8a9099L, 0x594b8d2eL, 0x5408abf7L, 0x50c9b640L,
+ 0x4e8ee645L, 0x4a4ffbf2L, 0x470cdd2bL, 0x43cdc09cL,
+ 0x7b827d21L, 0x7f436096L, 0x7200464fL, 0x76c15bf8L,
+ 0x68860bfdL, 0x6c47164aL, 0x61043093L, 0x65c52d24L,
+ 0x119b4be9L, 0x155a565eL, 0x18197087L, 0x1cd86d30L,
+ 0x029f3d35L, 0x065e2082L, 0x0b1d065bL, 0x0fdc1becL,
+ 0x3793a651L, 0x3352bbe6L, 0x3e119d3fL, 0x3ad08088L,
+ 0x2497d08dL, 0x2056cd3aL, 0x2d15ebe3L, 0x29d4f654L,
+ 0xc5a92679L, 0xc1683bceL, 0xcc2b1d17L, 0xc8ea00a0L,
+ 0xd6ad50a5L, 0xd26c4d12L, 0xdf2f6bcbL, 0xdbee767cL,
+ 0xe3a1cbc1L, 0xe760d676L, 0xea23f0afL, 0xeee2ed18L,
+ 0xf0a5bd1dL, 0xf464a0aaL, 0xf9278673L, 0xfde69bc4L,
+ 0x89b8fd09L, 0x8d79e0beL, 0x803ac667L, 0x84fbdbd0L,
+ 0x9abc8bd5L, 0x9e7d9662L, 0x933eb0bbL, 0x97ffad0cL,
+ 0xafb010b1L, 0xab710d06L, 0xa6322bdfL, 0xa2f33668L,
+ 0xbcb4666dL, 0xb8757bdaL, 0xb5365d03L, 0xb1f740b4L
+};
+
+void bz_rand_udp_mask(DState *s)
+{
+ if (s->rNToGo == 0) {
+ s->rNToGo = BZ2_rNums[s->rTPos];
+ s->rTPos++;
+ if (s->rTPos == 512) {
+ s->rTPos = 0;
+ }
+ }
+ s->rNToGo--;
+}
+
+static unsigned char myfeof(FILE *f)
+{
+ int c = fgetc(f);
+ if (c == EOF) {
+ return(TRUE);
+ }
+ ungetc(c, f);
+ return(FALSE);
+}
+
+static void cleanUpAndFail(int ec)
+{
+ int retVal;
+
+ if ((srcMode == SM_F2F) && (opMode != OM_TEST) && deleteOutputOnInterrupt) {
+ if (noisy) {
+ error_msg("%s: Deleting output file %s, if it exists.\n", progName, outName);
+ }
+ if (outputHandleJustInCase != NULL) {
+ fclose(outputHandleJustInCase);
+ }
+ retVal = remove(outName);
+ if (retVal != 0) {
+ error_msg("%s: WARNING: deletion of output file (apparently) failed.\n", progName);
+ }
+ }
+ if (noisy && (numFileNames > 0) && (numFilesProcessed < numFileNames)) {
+ error_msg("%s: WARNING: some files have not been processed:\n"
+ "\t%d specified on command line, %d not processed yet.\n\n",
+ progName, numFileNames, numFileNames - numFilesProcessed );
+ }
+
+ exit(ec);
+}
+
+
+void panic(char *s)
+{
+ error_msg("\n%s: PANIC -- internal consistency error:\n"
+ "\t%s\n"
+ "\tThis is a BUG. Please report it to me at:\n"
+ "\tjseward@acm.org\n",
+ progName, s);
+ cleanUpAndFail( 3 );
+}
+
+void BZ2_hbCreateDecodeTables(int *limit, int *base, int *perm, unsigned char *length, int minLen, int maxLen, int alphaSize )
+{
+ int pp, i, j, vec;
+
+ pp = 0;
+ for (i = minLen; i <= maxLen; i++) {
+ for (j = 0; j < alphaSize; j++) {
+ if (length[j] == i) {
+ perm[pp] = j;
+ pp++;
+ }
+ }
+ }
+
+ for (i = 0; i < BZ_MAX_CODE_LEN; i++) {
+ base[i] = 0;
+ }
+
+ for (i = 0; i < alphaSize; i++) {
+ base[length[i]+1]++;
+ }
+
+ for (i = 1; i < BZ_MAX_CODE_LEN; i++) {
+ base[i] += base[i-1];
+ }
+
+ for (i = 0; i < BZ_MAX_CODE_LEN; i++) {
+ limit[i] = 0;
+ }
+ vec = 0;
+
+ for (i = minLen; i <= maxLen; i++) {
+ vec += (base[i+1] - base[i]);
+ limit[i] = vec-1;
+ vec <<= 1;
+ }
+ for (i = minLen + 1; i <= maxLen; i++) {
+ base[i] = ((limit[i-1] + 1) << 1) - base[i];
+ }
+}
+
+int bz_get_small(DState *s)
+{
+ int cccc;
+ int nb, na, mid;
+ nb = 0;
+ na = 256;
+ do {
+ mid = (nb + na) >> 1;
+ if (s->tPos >= s->cftab[mid]) {
+ nb = mid;
+ } else {
+ na = mid;
+ }
+ }
+ while (na - nb != 1);
+ cccc = nb;
+ s->tPos = (((unsigned int)s->ll16[s->tPos]) |
+ (((((unsigned int)(s->ll4[(s->tPos) >> 1])) >>
+ (((s->tPos) << 2) & 0x4)) & 0xF) << 16));
+ return(cccc);
+}
+
+void assert_h(int errcode)
+{
+ error_msg_and_die("\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, BZ_VERSION);
+}
+
+static int get_bits(DState *s, int *vvv, char nnn)
+{
+ while (1) {
+ if (s->bsLive >= nnn) {
+ *vvv = (s->bsBuff >> (s->bsLive-nnn)) & ((1 << nnn)-1);
+ s->bsLive -= nnn;
+ break;
+ }
+ if (s->strm->avail_in == 0) {
+ return(FALSE);
+ }
+ s->bsBuff = (s->bsBuff << 8) | ((unsigned int) (*((unsigned char*)(s->strm->next_in))));
+ s->bsLive += 8;
+ 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++;
+ }
+ }
+ return(TRUE);
+}
+
+int bz_get_fast(DState *s)
+{
+ int cccc;
+ s->tPos = s->tt[s->tPos];
+ cccc = (unsigned char)(s->tPos & 0xff);
+ s->tPos >>= 8;
+ return(cccc);
+}
+
+/*---------------------------------------------------*/
+int BZ2_decompress(DState *s)
+{
+ int uc = 0;
+ int retVal;
+ int minLen, maxLen;
+ bz_stream *strm = s->strm;
+
+ /* stuff that needs to be saved/restored */
+ int i;
+ int j;
+ int t;
+ int alphaSize;
+ int nGroups;
+ int nSelectors;
+ int EOB;
+ int groupNo;
+ int groupPos;
+ int nextSym;
+ int nblockMAX;
+ int nblock;
+ int es;
+ int N;
+ int curr;
+ int zt;
+ int zn;
+ int zvec;
+ int zj;
+ int gSel;
+ int gMinlen;
+ int *gLimit;
+ int *gBase;
+ int *gPerm;
+ int switch_val;
+
+ int get_mtf_val_init(void)
+ {
+ if (groupPos == 0) {
+ groupNo++;
+ if (groupNo >= nSelectors) {
+ retVal = BZ_DATA_ERROR;
+ return(FALSE);
+ }
+ groupPos = BZ_G_SIZE;
+ gSel = s->selector[groupNo];
+ gMinlen = s->minLens[gSel];
+ gLimit = &(s->limit[gSel][0]);
+ gPerm = &(s->perm[gSel][0]);
+ gBase = &(s->base[gSel][0]);
+ }
+ groupPos--;
+ zn = gMinlen;
+ return(TRUE);
+ }
+
+ if (s->state == BZ_X_MAGIC_1) {
+ /*initialise the save area*/
+ s->save_i = 0;
+ s->save_j = 0;
+ s->save_t = 0;
+ s->save_alphaSize = 0;
+ s->save_nGroups = 0;
+ s->save_nSelectors = 0;
+ s->save_EOB = 0;
+ s->save_groupNo = 0;
+ s->save_groupPos = 0;
+ s->save_nextSym = 0;
+ s->save_nblockMAX = 0;
+ s->save_nblock = 0;
+ s->save_es = 0;
+ s->save_N = 0;
+ s->save_curr = 0;
+ s->save_zt = 0;
+ s->save_zn = 0;
+ s->save_zvec = 0;
+ s->save_zj = 0;
+ s->save_gSel = 0;
+ s->save_gMinlen = 0;
+ s->save_gLimit = NULL;
+ s->save_gBase = NULL;
+ s->save_gPerm = NULL;
+ }
+
+ /*restore from the save area*/
+ i = s->save_i;
+ j = s->save_j;
+ t = s->save_t;
+ alphaSize = s->save_alphaSize;
+ nGroups = s->save_nGroups;
+ nSelectors = s->save_nSelectors;
+ EOB = s->save_EOB;
+ groupNo = s->save_groupNo;
+ groupPos = s->save_groupPos;
+ nextSym = s->save_nextSym;
+ nblockMAX = s->save_nblockMAX;
+ nblock = s->save_nblock;
+ es = s->save_es;
+ N = s->save_N;
+ curr = s->save_curr;
+ zt = s->save_zt;
+ zn = s->save_zn;
+ zvec = s->save_zvec;
+ zj = s->save_zj;
+ gSel = s->save_gSel;
+ gMinlen = s->save_gMinlen;
+ gLimit = s->save_gLimit;
+ gBase = s->save_gBase;
+ gPerm = s->save_gPerm;
+
+ retVal = BZ_OK;
+ switch_val = s->state;
+ switch (switch_val) {
+ case BZ_X_MAGIC_1:
+ s->state = BZ_X_MAGIC_1;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ if (uc != 'B') {
+ retVal = BZ_DATA_ERROR_MAGIC;
+ goto save_state_and_return;
+ }
+
+ case BZ_X_MAGIC_2:
+ s->state = BZ_X_MAGIC_2;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ if (uc != 'Z') {
+ retVal = BZ_DATA_ERROR_MAGIC;
+ goto save_state_and_return;
+ }
+
+ case BZ_X_MAGIC_3:
+ s->state = BZ_X_MAGIC_3;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ if (uc != 'h') {
+ retVal = BZ_DATA_ERROR_MAGIC;
+ goto save_state_and_return;
+ }
+
+ case BZ_X_MAGIC_4:
+ s->state = BZ_X_MAGIC_4;
+ if (get_bits(s, &s->blockSize100k, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ if ((s->blockSize100k < '1') || (s->blockSize100k > '9')) {
+ retVal = BZ_DATA_ERROR_MAGIC;
+ goto save_state_and_return;
+ }
+ s->blockSize100k -= '0';
+
+ if (s->smallDecompress) {
+ s->ll16 = (strm->bzalloc)(strm->opaque, s->blockSize100k * 100000 * sizeof(unsigned short), 1);
+ s->ll4 = (strm->bzalloc)(strm->opaque, ((1 + s->blockSize100k * 100000) >> 1) * sizeof(unsigned char), 1);
+
+ if (s->ll16 == NULL || s->ll4 == NULL) {
+ retVal = BZ_MEM_ERROR;
+ goto save_state_and_return;
+ }
+ } else {
+ s->tt = (strm->bzalloc)(strm->opaque, s->blockSize100k * 100000 * sizeof(int), 1);
+ if (s->tt == NULL) {
+ retVal = BZ_MEM_ERROR;
+ goto save_state_and_return;
+ }
+ }
+
+ case BZ_X_BLKHDR_1:
+ s->state = BZ_X_BLKHDR_1;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+
+ if (uc == 0x17) {
+ goto endhdr_2;
+ }
+ if (uc != 0x31) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+
+ case BZ_X_BLKHDR_2:
+ s->state = BZ_X_BLKHDR_2;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ if (uc != 0x41) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+
+ case BZ_X_BLKHDR_3:
+ s->state = BZ_X_BLKHDR_3;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ if (uc != 0x59) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+
+ case BZ_X_BLKHDR_4:
+ s->state = BZ_X_BLKHDR_4;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ if (uc != 0x26) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+
+ case BZ_X_BLKHDR_5:
+ s->state = BZ_X_BLKHDR_5;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ if (uc != 0x53) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+
+ case BZ_X_BLKHDR_6:
+ s->state = BZ_X_BLKHDR_6;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ if (uc != 0x59) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+
+ s->currBlockNo++;
+ if (s->verbosity >= 2) {
+ error_msg("\n [%d: huff+mtf ", s->currBlockNo);
+ }
+ s->storedBlockCRC = 0;
+
+ case BZ_X_BCRC_1:
+ s->state = BZ_X_BCRC_1;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ s->storedBlockCRC = (s->storedBlockCRC << 8) | ((unsigned int)uc);
+
+ case BZ_X_BCRC_2:
+ s->state = BZ_X_BCRC_2;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ s->storedBlockCRC = (s->storedBlockCRC << 8) | ((unsigned int)uc);
+
+ case BZ_X_BCRC_3:
+ s->state = BZ_X_BCRC_3;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ s->storedBlockCRC = (s->storedBlockCRC << 8) | ((unsigned int)uc);
+
+ case BZ_X_BCRC_4:
+ s->state = BZ_X_BCRC_4;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ s->storedBlockCRC = (s->storedBlockCRC << 8) | ((unsigned int)uc);
+
+ case BZ_X_RANDBIT:
+ s->state = BZ_X_RANDBIT;
+ {
+ int tmp = s->blockRandomised;
+ const int ret = get_bits(s, &tmp, 1);
+ s->blockRandomised = tmp;
+ if (ret == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ }
+
+ s->origPtr = 0;
+
+ case BZ_X_ORIGPTR_1:
+ s->state = BZ_X_ORIGPTR_1;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ s->origPtr = (s->origPtr << 8) | ((int)uc);
+
+ case BZ_X_ORIGPTR_2:
+ s->state = BZ_X_ORIGPTR_2;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ s->origPtr = (s->origPtr << 8) | ((int)uc);
+
+ case BZ_X_ORIGPTR_3:
+ s->state = BZ_X_ORIGPTR_3;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ s->origPtr = (s->origPtr << 8) | ((int)uc);
+
+ if (s->origPtr < 0) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+ if (s->origPtr > 10 + 100000*s->blockSize100k) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+
+ /*--- Receive the mapping table ---*/
+ case BZ_X_MAPPING_1:
+ for (i = 0; i < 16; i++) {
+ s->state = BZ_X_MAPPING_1;
+ if (get_bits(s, &uc, 1) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ if (uc == 1) {
+ s->inUse16[i] = TRUE;
+ } else {
+ s->inUse16[i] = FALSE;
+ }
+ }
+
+ for (i = 0; i < 256; i++) {
+ s->inUse[i] = FALSE;
+ }
+
+ for (i = 0; i < 16; i++) {
+ if (s->inUse16[i]) {
+ for (j = 0; j < 16; j++) {
+ case BZ_X_MAPPING_2:
+ s->state = BZ_X_MAPPING_2;
+ if (get_bits(s, &uc, 1) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ if (uc == 1) {
+ s->inUse[i * 16 + j] = TRUE;
+ }
+ }
+ }
+ }
+
+ s->nInUse = 0;
+ for (i = 0; i < 256; i++) {
+ if (s->inUse[i]) {
+ s->seqToUnseq[s->nInUse] = i;
+ s->nInUse++;
+ }
+ }
+ if (s->nInUse == 0) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+ alphaSize = s->nInUse+2;
+
+ /*--- Now the selectors ---*/
+ case BZ_X_SELECTOR_1:
+ s->state = BZ_X_SELECTOR_1;
+ if (get_bits(s, &nGroups, 3) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ if (nGroups < 2 || nGroups > 6) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+
+ case BZ_X_SELECTOR_2:
+ s->state = BZ_X_SELECTOR_2;
+ if (get_bits(s, &nSelectors, 15) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ if (nSelectors < 1) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+
+
+
+ for (i = 0; i < nSelectors; i++) {
+ j = 0;
+ while (1) {
+ case BZ_X_SELECTOR_3:
+ s->state = BZ_X_SELECTOR_3;
+ if (get_bits(s, &uc, 1) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ if (uc == 0) {
+ break;
+ }
+ j++;
+ if (j >= nGroups) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+ }
+ s->selectorMtf[i] = j;
+ }
+
+ /*--- Undo the MTF values for the selectors. ---*/
+ {
+ unsigned char pos[BZ_N_GROUPS], tmp, v;
+ for (v = 0; v < nGroups; v++) {
+ pos[v] = v;
+ }
+ for (i = 0; i < nSelectors; i++) {
+ v = s->selectorMtf[i];
+ tmp = pos[v];
+ while (v > 0) {
+ pos[v] = pos[v-1];
+ v--;
+ }
+ pos[0] = tmp;
+ s->selector[i] = tmp;
+ }
+ }
+
+ /*--- Now the coding tables ---*/
+ for (t = 0; t < nGroups; t++) {
+ case BZ_X_CODING_1:
+ s->state = BZ_X_CODING_1;
+ if (get_bits(s, &curr, 5) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ for (i = 0; i < alphaSize; i++) {
+ while (TRUE) {
+ if (curr < 1 || curr > 20) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+
+ case BZ_X_CODING_2:
+ s->state = BZ_X_CODING_2;
+ if (get_bits(s, &uc, 1) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ if (uc == 0) {
+ break;
+ }
+
+ case BZ_X_CODING_3:
+ s->state = BZ_X_CODING_3;
+ if (get_bits(s, &uc, 1) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ if (uc == 0) {
+ curr++;
+ } else {
+ curr--;
+ }
+ }
+ s->len[t][i] = curr;
+ }
+ }
+
+ /*--- Create the Huffman decoding tables ---*/
+ for (t = 0; t < nGroups; t++) {
+ minLen = 32;
+ maxLen = 0;
+ for (i = 0; i < alphaSize; i++) {
+ if (s->len[t][i] > maxLen) {
+ maxLen = s->len[t][i];
+ }
+ if (s->len[t][i] < minLen) {
+ minLen = s->len[t][i];
+ }
+ }
+
+ BZ2_hbCreateDecodeTables (
+ &(s->limit[t][0]),
+ &(s->base[t][0]),
+ &(s->perm[t][0]),
+ &(s->len[t][0]),
+ minLen, maxLen, alphaSize
+ );
+
+
+ s->minLens[t] = minLen;
+ }
+
+ /*--- Now the MTF values ---*/
+
+ EOB = s->nInUse+1;
+ nblockMAX = 100000 * s->blockSize100k;
+ groupNo = -1;
+ groupPos = 0;
+
+ for (i = 0; i <= 255; i++) {
+ s->unzftab[i] = 0;
+ }
+ /*-- MTF init --*/
+ {
+ int ii, jj, kk;
+ kk = MTFA_SIZE-1;
+ for (ii = 256 / MTFL_SIZE - 1; ii >= 0; ii--) {
+ for (jj = MTFL_SIZE-1; jj >= 0; jj--) {
+ s->mtfa[kk] = (unsigned char)(ii * MTFL_SIZE + jj);
+ kk--;
+ }
+ s->mtfbase[ii] = kk + 1;
+ }
+ }
+ /*-- end MTF init --*/
+
+ nblock = 0;
+
+ if (get_mtf_val_init() == FALSE) {
+ goto save_state_and_return;
+ }
+ case BZ_X_MTF_1:
+ s->state = BZ_X_MTF_1;
+ if (get_bits(s, &zvec, zn) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ while (1) {
+ if (zn > 20 /* the longest code */) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+ if (zvec <= gLimit[zn]) {
+ break;
+ }
+ zn++;
+
+ case BZ_X_MTF_2:
+ s->state = BZ_X_MTF_2;
+ if (get_bits(s, &zj, 1) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ zvec = (zvec << 1) | zj;
+ }
+ if (zvec - gBase[zn] < 0 || zvec - gBase[zn] >= BZ_MAX_ALPHA_SIZE) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+ nextSym = gPerm[zvec - gBase[zn]];
+
+ while (1) {
+ if (nextSym == EOB) {
+ break;
+ }
+
+ if (nextSym == BZ_RUNA || nextSym == BZ_RUNB) {
+ es = -1;
+ N = 1;
+ do {
+ if (nextSym == BZ_RUNA) {
+ es = es + (0+1) * N;
+ } else {
+ if (nextSym == BZ_RUNB) {
+ es = es + (1+1) * N;
+ }
+ }
+ N = N * 2;
+ if (get_mtf_val_init() == FALSE) {
+ goto save_state_and_return;
+ }
+ case BZ_X_MTF_3:
+ s->state = BZ_X_MTF_3;
+ if (get_bits(s, &zvec, zn) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ while (1) {
+ if (zn > 20 /* the longest code */) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+ if (zvec <= gLimit[zn]) {
+ break;
+ }
+ zn++;
+
+ case BZ_X_MTF_4:
+ s->state = BZ_X_MTF_4;
+ if (get_bits(s, &zj, 1) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ zvec = (zvec << 1) | zj;
+ }
+ if (zvec - gBase[zn] < 0 || zvec - gBase[zn] >= BZ_MAX_ALPHA_SIZE) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+
+ }
+ nextSym = gPerm[zvec - gBase[zn]];
+ }
+ while (nextSym == BZ_RUNA || nextSym == BZ_RUNB);
+
+ es++;
+ uc = s->seqToUnseq[ s->mtfa[s->mtfbase[0]] ];
+ s->unzftab[uc] += es;
+
+ if (s->smallDecompress) {
+ while (es > 0) {
+ if (nblock >= nblockMAX) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+ s->ll16[nblock] = (unsigned short)uc;
+ nblock++;
+ es--;
+ }
+ } else {
+ while (es > 0) {
+ if (nblock >= nblockMAX) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+ s->tt[nblock] = (unsigned int)uc;
+ nblock++;
+ es--;
+ }
+ }
+ continue;
+ } else {
+ if (nblock >= nblockMAX) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+ /*-- uc = MTF ( nextSym-1 ) --*/
+ {
+ int ii, jj, kk, pp, lno, off;
+ unsigned int nn;
+ nn = (unsigned int)(nextSym - 1);
+
+ if (nn < MTFL_SIZE) {
+ /* avoid general-case expense */
+ pp = s->mtfbase[0];
+ uc = s->mtfa[pp+nn];
+ while (nn > 3) {
+ int z = pp+nn;
+ s->mtfa[(z) ] = s->mtfa[(z)-1];
+ s->mtfa[(z)-1] = s->mtfa[(z)-2];
+ s->mtfa[(z)-2] = s->mtfa[(z)-3];
+ s->mtfa[(z)-3] = s->mtfa[(z)-4];
+ nn -= 4;
+ }
+ while (nn > 0) {
+ s->mtfa[(pp+nn)] = s->mtfa[(pp+nn)-1]; nn--;
+ }
+ s->mtfa[pp] = uc;
+ } else {
+ /* general case */
+ lno = nn / MTFL_SIZE;
+ off = nn % MTFL_SIZE;
+ pp = s->mtfbase[lno] + off;
+ uc = s->mtfa[pp];
+ while (pp > s->mtfbase[lno]) {
+ s->mtfa[pp] = s->mtfa[pp-1];
+ pp--;
+ }
+ s->mtfbase[lno]++;
+ while (lno > 0) {
+ s->mtfbase[lno]--;
+ s->mtfa[s->mtfbase[lno]] = s->mtfa[s->mtfbase[lno-1] + MTFL_SIZE - 1];
+ lno--;
+ }
+ s->mtfbase[0]--;
+ s->mtfa[s->mtfbase[0]] = uc;
+ if (s->mtfbase[0] == 0) {
+ kk = MTFA_SIZE-1;
+ for (ii = 256 / MTFL_SIZE-1; ii >= 0; ii--) {
+ for (jj = MTFL_SIZE-1; jj >= 0; jj--) {
+ s->mtfa[kk] = s->mtfa[s->mtfbase[ii] + jj];
+ kk--;
+ }
+ s->mtfbase[ii] = kk + 1;
+ }
+ }
+ }
+ }
+ /*-- end uc = MTF ( nextSym-1 ) --*/
+
+ s->unzftab[s->seqToUnseq[uc]]++;
+ if (s->smallDecompress) {
+ s->ll16[nblock] = (unsigned short)(s->seqToUnseq[uc]);
+ } else {
+ s->tt[nblock] = (unsigned int)(s->seqToUnseq[uc]);
+ }
+ nblock++;
+
+ if (get_mtf_val_init() == FALSE) {
+ goto save_state_and_return;
+ }
+ case BZ_X_MTF_5:
+ s->state = BZ_X_MTF_5;
+ if (get_bits(s, &zvec, zn) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ while (1) {
+ if (zn > 20 /* the longest code */) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+ if (zvec <= gLimit[zn]) {
+ break;
+ }
+ zn++;
+
+ case BZ_X_MTF_6:
+ s->state = BZ_X_MTF_6;
+ if (get_bits(s, &zj, 1) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ zvec = (zvec << 1) | zj;
+ }
+ if (zvec - gBase[zn] < 0 || zvec - gBase[zn] >= BZ_MAX_ALPHA_SIZE) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+ nextSym = gPerm[zvec - gBase[zn]];
+ continue;
+ }
+ }
+
+ /* Now we know what nblock is, we can do a better sanity
+ check on s->origPtr.
+ */
+ if (s->origPtr < 0 || s->origPtr >= nblock) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+ s->state_out_len = 0;
+ s->state_out_ch = 0;
+ s->calculatedBlockCRC = 0xffffffffL;
+ s->state = BZ_X_OUTPUT;
+ if (s->verbosity >= 2) {
+ error_msg("rt+rld");
+ }
+
+ /*-- Set up cftab to facilitate generation of T^(-1) --*/
+ s->cftab[0] = 0;
+ for (i = 1; i <= 256; i++) {
+ s->cftab[i] = s->unzftab[i-1];
+ }
+ for (i = 1; i <= 256; i++) {
+ s->cftab[i] += s->cftab[i-1];
+ }
+
+ if (s->smallDecompress) {
+
+ /*-- Make a copy of cftab, used in generation of T --*/
+ for (i = 0; i <= 256; i++) {
+ s->cftabCopy[i] = s->cftab[i];
+ }
+
+ /*-- compute the T vector --*/
+ for (i = 0; i < nblock; i++) {
+ uc = (unsigned char)(s->ll16[i]);
+ s->ll16[i] = (unsigned short)(s->cftabCopy[uc] & 0x0000ffff);
+ if (((i) & 0x1) == 0) {
+ s->ll4[(i) >> 1] = (s->ll4[(i) >> 1] & 0xf0) | (s->cftabCopy[uc] >> 16);
+ } else {
+ s->ll4[(i) >> 1] = (s->ll4[(i) >> 1] & 0x0f) | ((s->cftabCopy[uc] >> 16) << 4);
+ }
+ s->cftabCopy[uc]++;
+ }
+
+ /*-- Compute T^(-1) by pointer reversal on T --*/
+ i = s->origPtr;
+ j = (((unsigned int)s->ll16[i]) |
+ (((((unsigned int)(s->ll4[(i) >> 1])) >>
+ (((i) << 2) & 0x4)) & 0xF) << 16));
+
+ do {
+ const int tmp = (((unsigned int)s->ll16[j]) |
+ (((((unsigned int)(s->ll4[(j) >> 1])) >>
+ (((j) << 2) & 0x4)) & 0xF) << 16));
+
+ s->ll16[j] = (unsigned short)(i & 0x0000ffff);
+ if (((j) & 0x1) == 0) {
+ s->ll4[(j) >> 1] = (s->ll4[(j) >> 1] & 0xf0) | (i >> 16);
+ } else {
+ s->ll4[(j) >> 1] = (s->ll4[(j) >> 1] & 0x0f) | ((i >> 16) << 4);
+ }
+ i = j;
+ j = tmp;
+ }
+ while (i != s->origPtr);
+ s->tPos = s->origPtr;
+ s->nblock_used = 0;
+ if (s->blockRandomised) {
+ s->rNToGo = 0;
+ s->rTPos = 0;
+ s->k0 = bz_get_small(s);
+ s->nblock_used++;
+ bz_rand_udp_mask(s);
+ s->k0 ^= ((s->rNToGo == 1) ? 1 : 0);
+ } else {
+ s->k0 = bz_get_small(s);
+ s->nblock_used++;
+ }
+ } else {
+ /*-- compute the T^(-1) vector --*/
+ for (i = 0; i < nblock; i++) {
+ uc = (unsigned char)(s->tt[i] & 0xff);
+ s->tt[s->cftab[uc]] |= (i << 8);
+ s->cftab[uc]++;
+ }
+
+ s->tPos = s->tt[s->origPtr] >> 8;
+ s->nblock_used = 0;
+ if (s->blockRandomised) {
+ s->rNToGo = 0;
+ s->rTPos = 0;
+ s->k0 = bz_get_fast(s);
+
+ s->nblock_used++;
+ bz_rand_udp_mask(s);
+ s->k0 ^= ((s->rNToGo == 1) ? 1 : 0);
+ } else {
+ s->k0 = bz_get_fast(s);
+ s->nblock_used++;
+ }
+ }
+
+ retVal = BZ_OK;
+ goto save_state_and_return;
+
+endhdr_2:
+ case BZ_X_ENDHDR_2:
+ s->state = BZ_X_ENDHDR_2;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ if (uc != 0x72) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+
+ case BZ_X_ENDHDR_3:
+ s->state = BZ_X_ENDHDR_3;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ if (uc != 0x45) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+
+ case BZ_X_ENDHDR_4:
+ s->state = BZ_X_ENDHDR_4;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ if (uc != 0x38) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+
+ case BZ_X_ENDHDR_5:
+ s->state = BZ_X_ENDHDR_5;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ if (uc != 0x50) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+
+ case BZ_X_ENDHDR_6:
+ s->state = BZ_X_ENDHDR_6;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ if (uc != 0x90) {
+ retVal = BZ_DATA_ERROR;
+ goto save_state_and_return;
+ }
+ s->storedCombinedCRC = 0;
+
+ case BZ_X_CCRC_1:
+ s->state = BZ_X_CCRC_1;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((unsigned int)uc);
+ case BZ_X_CCRC_2:
+ s->state = BZ_X_CCRC_2;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((unsigned int)uc);
+
+ case BZ_X_CCRC_3:
+ s->state = BZ_X_CCRC_3;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((unsigned int)uc);
+
+ case BZ_X_CCRC_4:
+ s->state = BZ_X_CCRC_4;
+ if (get_bits(s, &uc, 8) == FALSE) {
+ retVal = BZ_OK;
+ goto save_state_and_return;
+ }
+ s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((unsigned int)uc);
+
+ s->state = BZ_X_IDLE;
+ retVal = BZ_STREAM_END;
+ goto save_state_and_return;
+
+default:
+ printf("switch val is %d\n", switch_val);
+ assert_h(4001);
+ }
+
+ assert_h(4002);
+
+save_state_and_return:
+ s->save_i = i;
+ s->save_j = j;
+ s->save_t = t;
+ s->save_alphaSize = alphaSize;
+ s->save_nGroups = nGroups;
+ s->save_nSelectors = nSelectors;
+ s->save_EOB = EOB;
+ s->save_groupNo = groupNo;
+ s->save_groupPos = groupPos;
+ s->save_nextSym = nextSym;
+ s->save_nblockMAX = nblockMAX;
+ s->save_nblock = nblock;
+ s->save_es = es;
+ s->save_N = N;
+ s->save_curr = curr;
+ s->save_zt = zt;
+ s->save_zn = zn;
+ s->save_zvec = zvec;
+ s->save_zj = zj;
+ s->save_gSel = gSel;
+ s->save_gMinlen = gMinlen;
+ s->save_gLimit = gLimit;
+ s->save_gBase = gBase;
+ s->save_gPerm = gPerm;
+
+ return retVal;
+}
+
+static void *default_bzalloc(void *opaque, int items, int size)
+{
+ void *v = xmalloc(items *size);
+ return v;
+}
+
+static void default_bzfree(void *opaque, void *addr)
+{
+ if (addr != NULL) {
+ free(addr);
+ }
+}
+
+//int BZ2_bzDecompressInit(bz_stream* strm, int verbosity_level, int small)
+int BZ2_bzDecompressInit(bz_stream* strm, int small)
+{
+ DState* s;
+
+ if (sizeof(int) != 4) {
+ return BZ_CONFIG_ERROR;
+ }
+ if (sizeof(short) != 2) {
+ return BZ_CONFIG_ERROR;
+ }
+ if (sizeof(char) != 1) {
+ return BZ_CONFIG_ERROR;
+ }
+ if (strm == NULL) {
+ return BZ_PARAM_ERROR;
+ }
+ if (small != 0 && small != 1) {
+ return BZ_PARAM_ERROR;
+ }
+// if (verbosity_level < 0 || verbosity_level > 4) {
+// return BZ_PARAM_ERROR;
+// }
+ if (strm->bzalloc == NULL) {
+ strm->bzalloc = default_bzalloc;
+ }
+ if (strm->bzfree == NULL) {
+ strm->bzfree = default_bzfree;
+ }
+ s = (strm->bzalloc)(strm->opaque, sizeof(DState), 1);
+ 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 = (unsigned char)small;
+ s->ll4 = NULL;
+ s->ll16 = NULL;
+ s->tt = NULL;
+ s->currBlockNo = 0;
+// s->verbosity = verbosity_level;
+
+ return BZ_OK;
+}
+
+void bz_seterr(int eee, int *bzerror, bzFile **bzf)
+{
+ if (bzerror != NULL) {
+ *bzerror = eee;
+ }
+ if (*bzf != NULL) {
+ (*bzf)->lastErr = eee;
+ }
+}
+
+void BZ2_bzReadClose(int *bzerror, void *b)
+{
+ bzFile* bzf = (bzFile*)b;
+
+ bz_seterr(BZ_OK, bzerror, &bzf);
+ if (bzf == NULL) {
+ bz_seterr(BZ_OK, bzerror, &bzf);
+ return;
+ }
+
+ if (bzf->writing) {
+ bz_seterr(BZ_SEQUENCE_ERROR, bzerror, &bzf);
+ return;
+ }
+
+ if (bzf->initialisedOk) {
+ bz_stream *strm = &(bzf->strm);
+ DState *s;
+ if (strm == NULL) {
+ return;
+ }
+ s = strm->state;
+ if ((s == NULL) || (s->strm != strm)) {
+ return;
+ }
+ if (s->tt != NULL) {
+ (strm->bzfree)(strm->opaque,(s->tt));
+ }
+ if (s->ll16 != NULL) {
+ (strm->bzfree)(strm->opaque,(s->ll16));
+ }
+ if (s->ll4 != NULL) {
+ (strm->bzfree)(strm->opaque,(s->ll4));
+ }
+ (strm->bzfree)(strm->opaque,(strm->state));
+ strm->state = NULL;
+ return;
+ }
+ free(bzf);
+}
+
+static void unRLE_obuf_to_output_FAST(DState *s)
+{
+ unsigned char k1;
+
+ if (s->blockRandomised) {
+ while (1) {
+ /* try to finish existing run */
+ while (1) {
+ if (s->strm->avail_out == 0) {
+ return;
+ }
+ if (s->state_out_len == 0) {
+ break;
+ }
+ *((unsigned char *)(s->strm->next_out)) = s->state_out_ch;
+ s->calculatedBlockCRC = (s->calculatedBlockCRC << 8) ^
+ BZ2_crc32Table[(s->calculatedBlockCRC >> 24) ^
+ ((unsigned char)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;
+ k1 = bz_get_fast(s);
+ bz_rand_udp_mask(s);
+ k1 ^= ((s->rNToGo == 1) ? 1 : 0);
+ 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;
+ k1 = bz_get_fast(s);
+ bz_rand_udp_mask(s);
+ k1 ^= ((s->rNToGo == 1) ? 1 : 0);
+ 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;
+ k1 = bz_get_fast(s);
+ bz_rand_udp_mask(s);
+ k1 ^= ((s->rNToGo == 1) ? 1 : 0);
+ s->nblock_used++;
+ if (s->nblock_used == s->save_nblock+1) {
+ continue;
+ }
+ if (k1 != s->k0) {
+ s->k0 = k1;
+ continue;
+ }
+
+ k1 = bz_get_fast(s);
+ bz_rand_udp_mask(s);
+ k1 ^= ((s->rNToGo == 1) ? 1 : 0);
+ s->nblock_used++;
+ s->state_out_len = ((int)k1) + 4;
+ s->k0 = bz_get_fast(s);
+ bz_rand_udp_mask(s);
+ s->k0 ^= ((s->rNToGo == 1) ? 1 : 0);
+ s->nblock_used++;
+ }
+ } else {
+ /* restore */
+ unsigned int c_calculatedBlockCRC = s->calculatedBlockCRC;
+ unsigned char c_state_out_ch = s->state_out_ch;
+ int c_state_out_len = s->state_out_len;
+ int c_nblock_used = s->nblock_used;
+ int c_k0 = s->k0;
+ unsigned int *c_tt = s->tt;
+ unsigned int c_tPos = s->tPos;
+ char *cs_next_out = s->strm->next_out;
+ unsigned int cs_avail_out = s->strm->avail_out;
+ /* end restore */
+
+ unsigned int avail_out_INIT = cs_avail_out;
+ int s_save_nblockPP = s->save_nblock+1;
+ unsigned int total_out_lo32_old;
+
+ while (1) {
+ /* 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;
+ }
+ *((unsigned char *)(cs_next_out)) = c_state_out_ch;
+ c_calculatedBlockCRC = (c_calculatedBlockCRC << 8) ^
+ BZ2_crc32Table[(c_calculatedBlockCRC >> 24) ^
+ ((unsigned char)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;
+ }
+ *((unsigned char *)(cs_next_out)) = c_state_out_ch;
+ c_calculatedBlockCRC = (c_calculatedBlockCRC << 8) ^
+ BZ2_crc32Table[(c_calculatedBlockCRC >> 24) ^
+ ((unsigned char)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;
+ c_tPos = c_tt[c_tPos];
+ k1 = (unsigned char)(c_tPos & 0xff);
+ c_tPos >>= 8;
+
+ 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;
+ c_tPos = c_tt[c_tPos];
+ k1 = (unsigned char)(c_tPos & 0xff);
+ c_tPos >>= 8;
+
+ c_nblock_used++;
+ if (c_nblock_used == s_save_nblockPP) {
+ continue;
+ }
+ if (k1 != c_k0) {
+ c_k0 = k1;
+ continue;
+ }
+
+ c_state_out_len = 3;
+ c_tPos = c_tt[c_tPos];
+ k1 = (unsigned char)(c_tPos & 0xff);
+ c_tPos >>= 8;
+
+ c_nblock_used++;
+ if (c_nblock_used == s_save_nblockPP) {
+ continue;
+ }
+ if (k1 != c_k0) {
+ c_k0 = k1;
+ continue;
+ }
+
+ c_tPos = c_tt[c_tPos];
+ k1 = (unsigned char)(c_tPos & 0xff);
+ c_tPos >>= 8;
+
+ c_nblock_used++;
+ c_state_out_len = ((int)k1) + 4;
+
+ c_tPos = c_tt[c_tPos];
+ c_k0 = (unsigned char)(c_tPos & 0xff);
+ c_tPos >>= 8;
+
+ 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 */
+ }
+}
+
+static void unRLE_obuf_to_output_SMALL(DState *s)
+{
+ unsigned char k1;
+
+ if (s->blockRandomised) {
+ while (1) {
+ /* try to finish existing run */
+ while (1) {
+ if (s->strm->avail_out == 0) {
+ return;
+ }
+ if (s->state_out_len == 0) {
+ break;
+ }
+ *((unsigned char *)(s->strm->next_out)) = s->state_out_ch;
+ s->calculatedBlockCRC = (s->calculatedBlockCRC << 8) ^
+ BZ2_crc32Table[(s->calculatedBlockCRC >> 24) ^
+ ((unsigned char)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;
+ k1 = bz_get_small(s);
+ bz_rand_udp_mask(s);
+ k1 ^= ((s->rNToGo == 1) ? 1 : 0);
+ 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;
+ k1 = bz_get_small(s);
+ bz_rand_udp_mask(s);
+ k1 ^= ((s->rNToGo == 1) ? 1 : 0);
+ 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;
+ k1 = bz_get_small(s);
+ bz_rand_udp_mask(s);
+ k1 ^= ((s->rNToGo == 1) ? 1 : 0);
+ s->nblock_used++;
+ if (s->nblock_used == s->save_nblock+1) {
+ continue;
+ }
+ if (k1 != s->k0) {
+ s->k0 = k1;
+ continue;
+ }
+ k1 = bz_get_small(s);
+ bz_rand_udp_mask(s);
+ k1 ^= ((s->rNToGo == 1) ? 1 : 0);
+ s->nblock_used++;
+ s->state_out_len = ((int)k1) + 4;
+ s->k0 = bz_get_small(s);
+ bz_rand_udp_mask(s);
+ s->k0 ^= ((s->rNToGo == 1) ? 1 : 0);
+ s->nblock_used++;
+ }
+ } else {
+ while (1) {
+ /* try to finish existing run */
+ while (1) {
+ if (s->strm->avail_out == 0) {
+ return;
+ }
+ if (s->state_out_len == 0) {
+ break;
+ }
+ *((unsigned char *)(s->strm->next_out)) = s->state_out_ch;
+ s->calculatedBlockCRC = (s->calculatedBlockCRC << 8) ^
+ BZ2_crc32Table[(s->calculatedBlockCRC >> 24) ^
+ ((unsigned char)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;
+ k1 = bz_get_small(s);
+ 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;
+ k1 = bz_get_small(s);
+ 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;
+ k1 = bz_get_small(s);
+ s->nblock_used++;
+ if (s->nblock_used == s->save_nblock+1) {
+ continue;
+ }
+ if (k1 != s->k0) {
+ s->k0 = k1;
+ continue;
+ }
+
+ k1 = bz_get_small(s);
+ s->nblock_used++;
+ s->state_out_len = ((int)k1) + 4;
+ s->k0 = bz_get_small(s);
+ s->nblock_used++;
+ }
+ }
+}
+
+int 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 (1) {
+ 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) {
+ s->calculatedBlockCRC = ~(s->calculatedBlockCRC);
+ if (s->verbosity >= 3) {
+ error_msg("{0x%x, 0x%x}", s->storedBlockCRC, s->calculatedBlockCRC);
+ }
+ if (s->verbosity >= 2) {
+ error_msg("]");
+ }
+ 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) {
+ int r = BZ2_decompress(s);
+ if (r == BZ_STREAM_END) {
+ if (s->verbosity >= 3) {
+ error_msg("\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;
+ }
+ }
+ }
+
+ assert_h(6001);
+
+ return(0); /*NOTREACHED*/
+}
+
+int BZ2_bzRead(int *bzerror, void *b, void *buf, int len)
+{
+ int n, ret;
+ bzFile *bzf = (bzFile*)b;
+
+ bz_seterr(BZ_OK, bzerror, &bzf);
+
+ if (bzf == NULL || buf == NULL || len < 0) {
+ bz_seterr(BZ_PARAM_ERROR, bzerror, &bzf);
+ return 0;
+ }
+
+ if (bzf->writing) {
+ bz_seterr(BZ_SEQUENCE_ERROR, bzerror, &bzf);
+ return 0;
+ }
+
+ if (len == 0) {
+ bz_seterr(BZ_OK, bzerror, &bzf);
+ return 0;
+ }
+
+ bzf->strm.avail_out = len;
+ bzf->strm.next_out = buf;
+
+ while (1) {
+ if (ferror(bzf->handle)) {
+ bz_seterr(BZ_IO_ERROR, bzerror, &bzf);
+ return 0;
+ }
+ if ((bzf->strm.avail_in == 0) && !myfeof(bzf->handle)) {
+ n = fread(bzf->buf, sizeof(unsigned char), BZ_MAX_UNUSED, bzf->handle);
+ if (ferror(bzf->handle)) {
+ bz_seterr(BZ_IO_ERROR, bzerror, &bzf);
+ 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, bzerror, &bzf);
+ return 0;
+ }
+
+ if ((ret == BZ_OK) && myfeof(bzf->handle) &&
+ (bzf->strm.avail_in == 0) && (bzf->strm.avail_out > 0)) {
+ bz_seterr(BZ_UNEXPECTED_EOF, bzerror, &bzf);
+ return(0);
+ }
+
+ if (ret == BZ_STREAM_END) {
+ bz_seterr(BZ_STREAM_END, bzerror, &bzf);
+ return(len - bzf->strm.avail_out);
+ }
+ if (bzf->strm.avail_out == 0) {
+ bz_seterr(BZ_OK, bzerror, &bzf);
+ return(len);
+ }
+ }
+ return(0); /*not reached*/
+}
+
+void BZ2_bzReadGetUnused(int *bzerror, void *b, void **unused, int *nUnused)
+{
+ bzFile *bzf = (bzFile*)b;
+ if (bzf == NULL) {
+ bz_seterr(BZ_PARAM_ERROR, bzerror, &bzf);
+ return;
+ }
+ if (bzf->lastErr != BZ_STREAM_END) {
+ bz_seterr(BZ_SEQUENCE_ERROR, bzerror, &bzf);
+ return;
+ }
+ if (unused == NULL || nUnused == NULL) {
+ bz_seterr(BZ_PARAM_ERROR, bzerror, &bzf);
+ return;
+ }
+
+ bz_seterr(BZ_OK, bzerror, &bzf);
+ *nUnused = bzf->strm.avail_in;
+ *unused = bzf->strm.next_in;
+}
+
+void *BZ2_bzReadOpen(int *bzerror, FILE *f, int small, void *unused, int nUnused)
+{
+ bzFile *bzf = NULL;
+ int ret;
+
+ bz_seterr(BZ_OK, bzerror, &bzf);
+
+ if (f == NULL || (small != 0 && small != 1) ||
+ (unused != NULL && (nUnused < 0 || nUnused > BZ_MAX_UNUSED)) ||
+// (verbosity_level < 0 || verbosity_level > 4) ||
+ (unused == NULL && nUnused != 0)) {
+ bz_seterr(BZ_PARAM_ERROR, bzerror, &bzf);
+ return NULL;
+ }
+
+ if (ferror(f)) {
+ bz_seterr(BZ_IO_ERROR, bzerror, &bzf);
+ return NULL;
+ }
+
+ bzf = xmalloc(sizeof(bzFile));
+ if (bzf == NULL) {
+ bz_seterr(BZ_MEM_ERROR, bzerror, &bzf);
+ return NULL;
+ }
+ bz_seterr(BZ_OK, bzerror, &bzf);
+
+ 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] = *((unsigned char *)(unused)); bzf->bufN++;
+ unused = ((void *)( 1 + ((unsigned char *)(unused)) ));
+ nUnused--;
+ }
+
+ ret = BZ2_bzDecompressInit(&(bzf->strm), small);
+ if (ret != BZ_OK) {
+ bz_seterr(ret, bzerror, &bzf);
+ free(bzf);
+ return NULL;
+ }
+
+ bzf->strm.avail_in = bzf->bufN;
+ bzf->strm.next_in = bzf->buf;
+
+ bzf->initialisedOk = TRUE;
+ return bzf;
+}
+
+static unsigned char uncompressStream(FILE *zStream, FILE *stream)
+{
+ unsigned char unused[BZ_MAX_UNUSED];
+ unsigned char *unusedTmp;
+ unsigned char obuf[5000];
+ void *bzf = NULL;
+ int bzerr_dummy;
+ int bzerr;
+ int nread;
+ int nUnused;
+ int streamNo;
+ int ret;
+ int i;
+
+ nUnused = 0;
+ streamNo = 0;
+
+ if (ferror(stream)) {
+ goto errhandler_io;
+ }
+ if (ferror(zStream)) {
+ goto errhandler_io;
+ }
+
+ while(1) {
+ bzf = BZ2_bzReadOpen(&bzerr, zStream, (int)smallMode, unused, nUnused);
+ if (bzf == NULL || bzerr != BZ_OK) {
+ goto errhandler;
+ }
+ streamNo++;
+
+ while (bzerr == BZ_OK) {
+ nread = BZ2_bzRead(&bzerr, bzf, obuf, 5000);
+ if (bzerr == BZ_DATA_ERROR_MAGIC) {
+ goto errhandler;
+ }
+ if ((bzerr == BZ_OK || bzerr == BZ_STREAM_END) && nread > 0) {
+ fwrite(obuf, sizeof(unsigned char), nread, stream);
+ }
+ if (ferror(stream)) {
+ goto errhandler_io;
+ }
+ }
+ if (bzerr != BZ_STREAM_END) {
+ goto errhandler;
+ }
+ BZ2_bzReadGetUnused(&bzerr, bzf, (void **)(&unusedTmp), &nUnused);
+ if (bzerr != BZ_OK) {
+ panic("decompress:bzReadGetUnused");
+ }
+ for (i = 0; i < nUnused; i++) {
+ unused[i] = unusedTmp[i];
+ }
+ BZ2_bzReadClose(&bzerr, bzf);
+ if (bzerr != BZ_OK) {
+ panic("decompress:bzReadGetUnused");
+ }
+ if ((nUnused == 0) && myfeof(zStream)) {
+ break;
+ }
+ }
+
+ if (ferror(zStream)) {
+ goto errhandler_io;
+ }
+ ret = fclose(zStream);
+ if (ret == EOF) {
+ goto errhandler_io;
+ }
+ if (ferror(stream)) {
+ goto errhandler_io;
+ }
+ ret = fflush(stream);
+ if (ret != 0) {
+ goto errhandler_io;
+ }
+ if (stream != stdout) {
+ ret = fclose(stream);
+ if (ret == EOF) {
+ goto errhandler_io;
+ }
+ }
+// if (verbosity_level >= 2) {
+// fprintf(stderr,"\n ");
+// }
+ return TRUE;
+
+errhandler:
+ BZ2_bzReadClose ( &bzerr_dummy, bzf );
+ switch (bzerr) {
+ case BZ_CONFIG_ERROR:
+ error_msg("bzip2: I'm not configured correctly for this platform!\n"
+ "\tI require Int32, Int16 and Char to have sizes\n"
+ "\tof 4, 2 and 1 bytes to run properly, and they don't.\n"
+ "\tProbably you can fix this by defining them correctly,\n"
+ "\tand recompiling. Bye!\n" );
+ exit(3);
+ case BZ_IO_ERROR:
+errhandler_io:
+ error_msg("\n%s: I/O or other error, bailing out. "
+ "Possible reason follows.\n", progName);
+ perror(progName);
+ cleanUpAndFail(1);
+ case BZ_DATA_ERROR:
+ error_msg("\n%s: Data integrity error when decompressing.\n", progName);
+ cleanUpAndFail(2);
+ case BZ_MEM_ERROR:
+ error_msg("\n%s: couldn't allocate enough memory\n", progName);
+ cleanUpAndFail(1);
+ case BZ_UNEXPECTED_EOF:
+ error_msg("\n%s: Compressed file ends unexpectedly;\n\t"
+ "perhaps it is corrupted? *Possible* reason follows.\n", progName);
+ perror(progName);
+ cleanUpAndFail(2);
+ case BZ_DATA_ERROR_MAGIC:
+ if (zStream != stdin) {
+ fclose(zStream);
+ }
+ if (stream != stdout) {
+ fclose(stream);
+ }
+ if (streamNo == 1) {
+ return FALSE;
+ } else {
+ if (noisy) {
+ error_msg("\n%s: %s: trailing garbage after EOF ignored\n", progName, inName );
+ }
+ return TRUE;
+ }
+ default:
+ panic ( "decompress:unexpected error" );
+ }
+
+ panic("decompress:end");
+ return(TRUE); /*notreached*/
+}
+
+int bunzip2_main(int argc, char **argv)
+{
+ FILE *src_stream;
+ FILE *dst_stream;
+ char *save_name;
+ char *save_name_ptr;
+ if (argc != 2) {
+ show_usage();
+ }
+ src_stream = xfopen(argv[1], "r");
+ save_name = strdup(argv[1]);
+ save_name_ptr = strrchr(save_name, '.');
+ if (save_name_ptr == NULL) {
+ return(FALSE);
+ }
+ if (strcmp(save_name_ptr, ".bz2") != 0) {
+ error_msg("Invalid extension, expected .bz2");
+ }
+ *save_name_ptr = '\0';
+ dst_stream = xfopen(save_name, "w");
+ uncompressStream(src_stream, dst_stream);
+
+ return(TRUE);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 23:36:52 +0000