| #include <config.h> |
| #include <common.h> |
| #include <watchdog.h> |
| |
| /*-------------------------------------------------------------*/ |
| /*--- Decompression machinery ---*/ |
| /*--- decompress.c ---*/ |
| /*-------------------------------------------------------------*/ |
| |
| /*-- |
| This file is a part of bzip2 and/or libbzip2, a program and |
| library for lossless, block-sorting data compression. |
| |
| Copyright (C) 1996-2002 Julian R Seward. All rights reserved. |
| |
| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions |
| are met: |
| |
| 1. Redistributions of source code must retain the above copyright |
| notice, this list of conditions and the following disclaimer. |
| |
| 2. The origin of this software must not be misrepresented; you must |
| not claim that you wrote the original software. If you use this |
| software in a product, an acknowledgment in the product |
| documentation would be appreciated but is not required. |
| |
| 3. Altered source versions must be plainly marked as such, and must |
| not be misrepresented as being the original software. |
| |
| 4. The name of the author may not be used to endorse or promote |
| products derived from this software without specific prior written |
| permission. |
| |
| THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS |
| OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE |
| GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| Julian Seward, Cambridge, UK. |
| jseward@acm.org |
| bzip2/libbzip2 version 1.0 of 21 March 2000 |
| |
| This program is based on (at least) the work of: |
| Mike Burrows |
| David Wheeler |
| Peter Fenwick |
| Alistair Moffat |
| Radford Neal |
| Ian H. Witten |
| Robert Sedgewick |
| Jon L. Bentley |
| |
| For more information on these sources, see the manual. |
| --*/ |
| |
| |
| #include "bzlib_private.h" |
| |
| |
| /*---------------------------------------------------*/ |
| static |
| void makeMaps_d ( DState* s ) |
| { |
| Int32 i; |
| s->nInUse = 0; |
| for (i = 0; i < 256; i++) |
| if (s->inUse[i]) { |
| s->seqToUnseq[s->nInUse] = i; |
| s->nInUse++; |
| } |
| } |
| |
| |
| /*---------------------------------------------------*/ |
| #define RETURN(rrr) \ |
| { retVal = rrr; goto save_state_and_return; }; |
| |
| #define GET_BITS(lll,vvv,nnn) \ |
| case lll: s->state = lll; \ |
| while (True) { \ |
| if (s->bsLive >= nnn) { \ |
| UInt32 v; \ |
| v = (s->bsBuff >> \ |
| (s->bsLive-nnn)) & ((1 << nnn)-1); \ |
| s->bsLive -= nnn; \ |
| vvv = v; \ |
| break; \ |
| } \ |
| if (s->strm->avail_in == 0) RETURN(BZ_OK); \ |
| s->bsBuff \ |
| = (s->bsBuff << 8) | \ |
| ((UInt32) \ |
| (*((UChar*)(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++; \ |
| } |
| |
| #define GET_UCHAR(lll,uuu) \ |
| GET_BITS(lll,uuu,8) |
| |
| #define GET_BIT(lll,uuu) \ |
| GET_BITS(lll,uuu,1) |
| |
| /*---------------------------------------------------*/ |
| #define GET_MTF_VAL(label1,label2,lval) \ |
| { \ |
| if (groupPos == 0) { \ |
| groupNo++; \ |
| if (groupNo >= nSelectors) \ |
| RETURN(BZ_DATA_ERROR); \ |
| 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; \ |
| GET_BITS(label1, zvec, zn); \ |
| while (1) { \ |
| if (zn > 20 /* the longest code */) \ |
| RETURN(BZ_DATA_ERROR); \ |
| if (zvec <= gLimit[zn]) break; \ |
| zn++; \ |
| GET_BIT(label2, zj); \ |
| zvec = (zvec << 1) | zj; \ |
| }; \ |
| if (zvec - gBase[zn] < 0 \ |
| || zvec - gBase[zn] >= BZ_MAX_ALPHA_SIZE) \ |
| RETURN(BZ_DATA_ERROR); \ |
| lval = gPerm[zvec - gBase[zn]]; \ |
| } |
| |
| |
| /*---------------------------------------------------*/ |
| Int32 BZ2_decompress ( DState* s ) |
| { |
| UChar uc; |
| Int32 retVal; |
| Int32 minLen, maxLen; |
| bz_stream* strm = s->strm; |
| |
| /* stuff that needs to be saved/restored */ |
| Int32 i; |
| Int32 j; |
| Int32 t; |
| Int32 alphaSize; |
| Int32 nGroups; |
| Int32 nSelectors; |
| Int32 EOB; |
| Int32 groupNo; |
| Int32 groupPos; |
| Int32 nextSym; |
| Int32 nblockMAX; |
| Int32 nblock; |
| Int32 es; |
| Int32 N; |
| Int32 curr; |
| Int32 zt; |
| Int32 zn; |
| Int32 zvec; |
| Int32 zj; |
| Int32 gSel; |
| Int32 gMinlen; |
| Int32* gLimit; |
| Int32* gBase; |
| Int32* gPerm; |
| |
| 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 (s->state) { |
| |
| GET_UCHAR(BZ_X_MAGIC_1, uc); |
| if (uc != BZ_HDR_B) RETURN(BZ_DATA_ERROR_MAGIC); |
| |
| GET_UCHAR(BZ_X_MAGIC_2, uc); |
| if (uc != BZ_HDR_Z) RETURN(BZ_DATA_ERROR_MAGIC); |
| |
| GET_UCHAR(BZ_X_MAGIC_3, uc) |
| if (uc != BZ_HDR_h) RETURN(BZ_DATA_ERROR_MAGIC); |
| |
| GET_BITS(BZ_X_MAGIC_4, s->blockSize100k, 8) |
| if (s->blockSize100k < (BZ_HDR_0 + 1) || |
| s->blockSize100k > (BZ_HDR_0 + 9)) RETURN(BZ_DATA_ERROR_MAGIC); |
| s->blockSize100k -= BZ_HDR_0; |
| |
| if (s->smallDecompress) { |
| s->ll16 = BZALLOC( s->blockSize100k * 100000 * sizeof(UInt16) ); |
| s->ll4 = BZALLOC( |
| ((1 + s->blockSize100k * 100000) >> 1) * sizeof(UChar) |
| ); |
| if (s->ll16 == NULL || s->ll4 == NULL) RETURN(BZ_MEM_ERROR); |
| } else { |
| s->tt = BZALLOC( s->blockSize100k * 100000 * sizeof(Int32) ); |
| if (s->tt == NULL) RETURN(BZ_MEM_ERROR); |
| } |
| |
| GET_UCHAR(BZ_X_BLKHDR_1, uc); |
| |
| if (uc == 0x17) goto endhdr_2; |
| if (uc != 0x31) RETURN(BZ_DATA_ERROR); |
| GET_UCHAR(BZ_X_BLKHDR_2, uc); |
| if (uc != 0x41) RETURN(BZ_DATA_ERROR); |
| GET_UCHAR(BZ_X_BLKHDR_3, uc); |
| if (uc != 0x59) RETURN(BZ_DATA_ERROR); |
| GET_UCHAR(BZ_X_BLKHDR_4, uc); |
| if (uc != 0x26) RETURN(BZ_DATA_ERROR); |
| GET_UCHAR(BZ_X_BLKHDR_5, uc); |
| if (uc != 0x53) RETURN(BZ_DATA_ERROR); |
| GET_UCHAR(BZ_X_BLKHDR_6, uc); |
| if (uc != 0x59) RETURN(BZ_DATA_ERROR); |
| |
| s->currBlockNo++; |
| if (s->verbosity >= 2) |
| VPrintf1 ( "\n [%d: huff+mtf ", s->currBlockNo ); |
| |
| s->storedBlockCRC = 0; |
| GET_UCHAR(BZ_X_BCRC_1, uc); |
| s->storedBlockCRC = (s->storedBlockCRC << 8) | ((UInt32)uc); |
| GET_UCHAR(BZ_X_BCRC_2, uc); |
| s->storedBlockCRC = (s->storedBlockCRC << 8) | ((UInt32)uc); |
| GET_UCHAR(BZ_X_BCRC_3, uc); |
| s->storedBlockCRC = (s->storedBlockCRC << 8) | ((UInt32)uc); |
| GET_UCHAR(BZ_X_BCRC_4, uc); |
| s->storedBlockCRC = (s->storedBlockCRC << 8) | ((UInt32)uc); |
| |
| GET_BITS(BZ_X_RANDBIT, s->blockRandomised, 1); |
| |
| s->origPtr = 0; |
| GET_UCHAR(BZ_X_ORIGPTR_1, uc); |
| s->origPtr = (s->origPtr << 8) | ((Int32)uc); |
| GET_UCHAR(BZ_X_ORIGPTR_2, uc); |
| s->origPtr = (s->origPtr << 8) | ((Int32)uc); |
| GET_UCHAR(BZ_X_ORIGPTR_3, uc); |
| s->origPtr = (s->origPtr << 8) | ((Int32)uc); |
| |
| if (s->origPtr < 0) |
| RETURN(BZ_DATA_ERROR); |
| if (s->origPtr > 10 + 100000*s->blockSize100k) |
| RETURN(BZ_DATA_ERROR); |
| |
| /*--- Receive the mapping table ---*/ |
| for (i = 0; i < 16; i++) { |
| GET_BIT(BZ_X_MAPPING_1, uc); |
| 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++) { |
| GET_BIT(BZ_X_MAPPING_2, uc); |
| if (uc == 1) s->inUse[i * 16 + j] = True; |
| } |
| makeMaps_d ( s ); |
| if (s->nInUse == 0) RETURN(BZ_DATA_ERROR); |
| alphaSize = s->nInUse+2; |
| |
| /*--- Now the selectors ---*/ |
| GET_BITS(BZ_X_SELECTOR_1, nGroups, 3); |
| if (nGroups < 2 || nGroups > 6) RETURN(BZ_DATA_ERROR); |
| GET_BITS(BZ_X_SELECTOR_2, nSelectors, 15); |
| if (nSelectors < 1) RETURN(BZ_DATA_ERROR); |
| for (i = 0; i < nSelectors; i++) { |
| j = 0; |
| while (True) { |
| GET_BIT(BZ_X_SELECTOR_3, uc); |
| if (uc == 0) break; |
| j++; |
| if (j >= nGroups) RETURN(BZ_DATA_ERROR); |
| } |
| s->selectorMtf[i] = j; |
| } |
| |
| /*--- Undo the MTF values for the selectors. ---*/ |
| { |
| UChar 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++) { |
| GET_BITS(BZ_X_CODING_1, curr, 5); |
| for (i = 0; i < alphaSize; i++) { |
| while (True) { |
| if (curr < 1 || curr > 20) RETURN(BZ_DATA_ERROR); |
| GET_BIT(BZ_X_CODING_2, uc); |
| if (uc == 0) break; |
| GET_BIT(BZ_X_CODING_3, uc); |
| 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 --*/ |
| { |
| Int32 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] = (UChar)(ii * MTFL_SIZE + jj); |
| kk--; |
| } |
| s->mtfbase[ii] = kk + 1; |
| } |
| } |
| /*-- end MTF init --*/ |
| |
| nblock = 0; |
| GET_MTF_VAL(BZ_X_MTF_1, BZ_X_MTF_2, nextSym); |
| |
| while (True) { |
| |
| #if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG) |
| schedule(); |
| #endif |
| 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; |
| GET_MTF_VAL(BZ_X_MTF_3, BZ_X_MTF_4, nextSym); |
| } |
| 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) RETURN(BZ_DATA_ERROR); |
| s->ll16[nblock] = (UInt16)uc; |
| nblock++; |
| es--; |
| } |
| else |
| while (es > 0) { |
| if (nblock >= nblockMAX) RETURN(BZ_DATA_ERROR); |
| s->tt[nblock] = (UInt32)uc; |
| nblock++; |
| es--; |
| }; |
| |
| continue; |
| |
| } else { |
| |
| if (nblock >= nblockMAX) RETURN(BZ_DATA_ERROR); |
| |
| /*-- uc = MTF ( nextSym-1 ) --*/ |
| { |
| Int32 ii, jj, kk, pp, lno, off; |
| UInt32 nn; |
| nn = (UInt32)(nextSym - 1); |
| |
| if (nn < MTFL_SIZE) { |
| /* avoid general-case expense */ |
| pp = s->mtfbase[0]; |
| uc = s->mtfa[pp+nn]; |
| while (nn > 3) { |
| Int32 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--) { |
| #if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG) |
| schedule(); |
| #endif |
| 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] = (UInt16)(s->seqToUnseq[uc]); else |
| s->tt[nblock] = (UInt32)(s->seqToUnseq[uc]); |
| nblock++; |
| |
| GET_MTF_VAL(BZ_X_MTF_5, BZ_X_MTF_6, nextSym); |
| continue; |
| } |
| } |
| |
| /* Now we know what nblock is, we can do a better sanity |
| check on s->origPtr. |
| */ |
| if (s->origPtr < 0 || s->origPtr >= nblock) |
| RETURN(BZ_DATA_ERROR); |
| |
| s->state_out_len = 0; |
| s->state_out_ch = 0; |
| BZ_INITIALISE_CRC ( s->calculatedBlockCRC ); |
| s->state = BZ_X_OUTPUT; |
| if (s->verbosity >= 2) VPrintf0 ( "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 = (UChar)(s->ll16[i]); |
| SET_LL(i, s->cftabCopy[uc]); |
| s->cftabCopy[uc]++; |
| } |
| |
| /*-- Compute T^(-1) by pointer reversal on T --*/ |
| i = s->origPtr; |
| j = GET_LL(i); |
| do { |
| Int32 tmp = GET_LL(j); |
| SET_LL(j, i); |
| i = j; |
| j = tmp; |
| } |
| while (i != s->origPtr); |
| |
| #if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG) |
| schedule(); |
| #endif |
| s->tPos = s->origPtr; |
| s->nblock_used = 0; |
| if (s->blockRandomised) { |
| BZ_RAND_INIT_MASK; |
| BZ_GET_SMALL(s->k0); s->nblock_used++; |
| BZ_RAND_UPD_MASK; s->k0 ^= BZ_RAND_MASK; |
| } else { |
| BZ_GET_SMALL(s->k0); s->nblock_used++; |
| } |
| |
| } else { |
| |
| #if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG) |
| schedule(); |
| #endif |
| /*-- compute the T^(-1) vector --*/ |
| for (i = 0; i < nblock; i++) { |
| uc = (UChar)(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) { |
| BZ_RAND_INIT_MASK; |
| BZ_GET_FAST(s->k0); s->nblock_used++; |
| BZ_RAND_UPD_MASK; s->k0 ^= BZ_RAND_MASK; |
| } else { |
| BZ_GET_FAST(s->k0); s->nblock_used++; |
| } |
| |
| } |
| |
| RETURN(BZ_OK); |
| |
| |
| endhdr_2: |
| |
| GET_UCHAR(BZ_X_ENDHDR_2, uc); |
| if (uc != 0x72) RETURN(BZ_DATA_ERROR); |
| GET_UCHAR(BZ_X_ENDHDR_3, uc); |
| if (uc != 0x45) RETURN(BZ_DATA_ERROR); |
| GET_UCHAR(BZ_X_ENDHDR_4, uc); |
| if (uc != 0x38) RETURN(BZ_DATA_ERROR); |
| GET_UCHAR(BZ_X_ENDHDR_5, uc); |
| if (uc != 0x50) RETURN(BZ_DATA_ERROR); |
| GET_UCHAR(BZ_X_ENDHDR_6, uc); |
| if (uc != 0x90) RETURN(BZ_DATA_ERROR); |
| |
| s->storedCombinedCRC = 0; |
| GET_UCHAR(BZ_X_CCRC_1, uc); |
| s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((UInt32)uc); |
| GET_UCHAR(BZ_X_CCRC_2, uc); |
| s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((UInt32)uc); |
| GET_UCHAR(BZ_X_CCRC_3, uc); |
| s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((UInt32)uc); |
| GET_UCHAR(BZ_X_CCRC_4, uc); |
| s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((UInt32)uc); |
| |
| s->state = BZ_X_IDLE; |
| RETURN(BZ_STREAM_END); |
| |
| default: AssertH ( False, 4001 ); |
| } |
| |
| AssertH ( False, 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; |
| } |
| |
| |
| /*-------------------------------------------------------------*/ |
| /*--- end decompress.c ---*/ |
| /*-------------------------------------------------------------*/ |