updated bzip2 for cleanliness, still some good reorganizations yet
git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@1242 212acab6-be3b-0410-9dea-997c60f758d6
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justin1014
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7 changed files with 361 additions and 464 deletions
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@ -4,6 +4,10 @@
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/*--- bzlib.h ---*/
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/*-------------------------------------------------------------*/
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// (this has been hacked to peices by david eccles and justin frankel,
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// and others, to make it small for nsis. it is not compatible with
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// bzip2 any longer. yay. )
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/*--
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This file is a part of bzip2 and/or libbzip2, a program and
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library for lossless, block-sorting data compression.
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@ -155,6 +159,358 @@ BZ_EXTERN int BZ_API(BZ2_bzDecompressEnd) (
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bz_stream *strm
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);
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/*-- General stuff. --*/
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#define BZ_VERSION "1.0.1, 23-June-2000"
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typedef char Char;
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typedef unsigned char Bool;
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typedef unsigned char UChar;
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typedef int Int32;
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typedef unsigned int UInt32;
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typedef short Int16;
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typedef unsigned short UInt16;
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#define True ((Bool)1)
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#define False ((Bool)0)
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#ifndef __GNUC__
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#define __inline__ /* */
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#endif
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#define AssertD(cond,msg) /* */
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#define AssertH(cond,errcode) /* */
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#define AssertD(cond,msg) /* */
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#define VPrintf0(zf) /* */
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#define VPrintf1(zf,za1) /* */
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#define VPrintf2(zf,za1,za2) /* */
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#define VPrintf3(zf,za1,za2,za3) /* */
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#define VPrintf4(zf,za1,za2,za3,za4) /* */
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#define VPrintf5(zf,za1,za2,za3,za4,za5) /* */
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#ifdef EXEHEAD
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#include "../exehead/util.h"
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#define BZALLOC(items) my_GlobalAlloc(items)
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#else // def EXEHEAD
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#define BZALLOC(items) GlobalAlloc(GPTR,items)
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#define mini_memcpy memcpy
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#endif // def EXEHEAD
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#define BZFREE(addr) { if (addr) GlobalFree(addr); }
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/*-- Constants for the back end. --*/
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#define BZ_MAX_ALPHA_SIZE 258
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#define BZ_MAX_CODE_LEN 23
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#define BZ_RUNA 0
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#define BZ_RUNB 1
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#define BZ_N_GROUPS 6
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#define BZ_G_SIZE 50
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#define BZ_N_ITERS 4
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#define BZ_MAX_SELECTORS (2 + (900000 / BZ_G_SIZE))
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/*-- States and modes for compression. --*/
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#define BZ_M_IDLE 1
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#define BZ_M_RUNNING 2
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#define BZ_M_FLUSHING 3
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#define BZ_M_FINISHING 4
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#define BZ_S_OUTPUT 1
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#define BZ_S_INPUT 2
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#define BZ_N_RADIX 2
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#define BZ_N_QSORT 12
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#define BZ_N_SHELL 18
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#define BZ_N_OVERSHOOT (BZ_N_RADIX + BZ_N_QSORT + BZ_N_SHELL + 2)
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/*-- Structure holding all the compression-side stuff. --*/
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typedef
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struct {
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/* pointer back to the struct bz_stream */
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bz_stream* strm;
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/* mode this stream is in, and whether inputting */
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/* or outputting data */
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Int32 mode;
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Int32 state;
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/* remembers avail_in when flush/finish requested */
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UInt32 avail_in_expect;
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/* for doing the block sorting */
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UInt32* arr1;
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UInt32* arr2;
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UInt32* ftab;
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Int32 origPtr;
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/* aliases for arr1 and arr2 */
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UInt32* ptr;
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UChar* block;
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UInt16* mtfv;
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UChar* zbits;
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/* for deciding when to use the fallback sorting algorithm */
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Int32 workFactor;
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/* run-length-encoding of the input */
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UInt32 state_in_ch;
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Int32 state_in_len;
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/* input and output limits and current posns */
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Int32 nblock;
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Int32 nblockMAX;
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Int32 numZ;
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Int32 state_out_pos;
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/* map of bytes used in block */
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Int32 nInUse;
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Bool inUse[256];
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UChar unseqToSeq[256];
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/* the buffer for bit stream creation */
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UInt32 bsBuff;
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Int32 bsLive;
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/* misc administratium */
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Int32 blockNo;
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/* stuff for coding the MTF values */
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Int32 nMTF;
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Int32 mtfFreq [BZ_MAX_ALPHA_SIZE];
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UChar selector [BZ_MAX_SELECTORS];
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UChar selectorMtf[BZ_MAX_SELECTORS];
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UChar len [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
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Int32 code [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
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Int32 rfreq [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
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/* second dimension: only 3 needed; 4 makes index calculations faster */
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UInt32 len_pack[BZ_MAX_ALPHA_SIZE][4];
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}
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EState;
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/*-- externs for compression. --*/
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extern void
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BZ2_blockSort ( EState* );
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extern void
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BZ2_compressBlock ( EState*, Bool );
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extern void
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BZ2_bsInitWrite ( EState* );
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extern void
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BZ2_hbAssignCodes ( Int32*, UChar*, Int32, Int32, Int32 );
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extern void
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BZ2_hbMakeCodeLengths ( UChar*, Int32*, Int32, Int32 );
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/*-- states for decompression. --*/
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#define BZ_X_IDLE 1
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#define BZ_X_OUTPUT 2
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#define BZ_X_BLKHDR_1 11
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#define BZ_X_RANDBIT 12
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#define BZ_X_ORIGPTR_1 13
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#define BZ_X_ORIGPTR_2 14
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#define BZ_X_ORIGPTR_3 15
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#define BZ_X_MAPPING_1 16
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#define BZ_X_MAPPING_2 17
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#define BZ_X_SELECTOR_1 18
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#define BZ_X_SELECTOR_2 19
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#define BZ_X_SELECTOR_3 20
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#define BZ_X_CODING_1 21
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#define BZ_X_CODING_2 22
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#define BZ_X_CODING_3 23
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#define BZ_X_MTF_1 24
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#define BZ_X_MTF_2 25
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#define BZ_X_MTF_3 26
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#define BZ_X_MTF_4 27
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#define BZ_X_MTF_5 28
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#define BZ_X_MTF_6 29
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/*-- Constants for the fast MTF decoder. --*/
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#define MTFA_SIZE 4096
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#define MTFL_SIZE 16
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/* save area for scalars in the main decompress code */
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typedef struct {
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Int32 i;
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Int32 j;
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Int32 t;
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Int32 alphaSize;
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Int32 nGroups;
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Int32 nSelectors;
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Int32 EOB;
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Int32 groupNo;
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Int32 groupPos;
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Int32 nextSym;
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Int32 nblockMAX;
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Int32 nblock;
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Int32 es;
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Int32 N;
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Int32 curr;
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Int32 zt;
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Int32 zn;
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Int32 zvec;
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Int32 zj;
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Int32 gSel;
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Int32 gMinlen;
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Int32* gLimit;
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Int32* gBase;
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Int32* gPerm;
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} DState_save;
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/*-- Structure holding all the decompression-side stuff. --*/
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typedef
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struct {
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/* pointer back to the struct bz_stream */
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bz_stream* strm;
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/* state indicator for this stream */
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Int32 state;
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/* for doing the final run-length decoding */
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UChar state_out_ch;
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Int32 state_out_len;
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/* the buffer for bit stream reading */
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UInt32 bsBuff;
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Int32 bsLive;
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/* misc administratium */
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Int32 currBlockNo;
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Int32 verbosity;
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/* for undoing the Burrows-Wheeler transform */
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Int32 origPtr;
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UInt32 tPos;
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Int32 k0;
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Int32 unzftab[256];
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Int32 nblock_used;
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Int32 cftab[257];
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Int32 cftabCopy[257];
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#ifndef NSIS_COMPRESS_BZIP2_SMALLMODE
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/* for undoing the Burrows-Wheeler transform (FAST) */
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UInt32 tt[ NSIS_COMPRESS_BZIP2_LEVEL * 100000 ];
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#else
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/* for undoing the Burrows-Wheeler transform (SMALL) */
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UInt16 ll16 [ NSIS_COMPRESS_BZIP2_LEVEL*100000 ];
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UChar ll4 [((1 + NSIS_COMPRESS_BZIP2_LEVEL*100000) >> 1) ];
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#endif
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/* stored and calculated CRCs */
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// UInt32 storedBlockCRC;
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// UInt32 storedCombinedCRC;
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// UInt32 calculatedBlockCRC;
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//UInt32 calculatedCombinedCRC;
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/* map of bytes used in block */
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Int32 nInUse;
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Bool inUse[256];
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Bool inUse16[16];
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UChar seqToUnseq[256];
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/* for decoding the MTF values */
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UChar mtfa [MTFA_SIZE];
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Int32 mtfbase[256 / MTFL_SIZE];
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UChar selector [BZ_MAX_SELECTORS];
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UChar selectorMtf[BZ_MAX_SELECTORS];
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UChar len [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
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Int32 limit [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
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Int32 base [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
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Int32 perm [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
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Int32 minLens[BZ_N_GROUPS];
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/* save area for scalars in the main decompress code */
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DState_save save;
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}
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DState;
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/*-- Macros for decompression. --*/
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#define BZ_GET_FAST(cccc) \
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s->tPos = s->tt[s->tPos]; \
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cccc = (UChar)(s->tPos & 0xff); \
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s->tPos >>= 8;
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#define BZ_GET_FAST_C(cccc) \
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c_tPos = c_tt[c_tPos]; \
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cccc = (UChar)(c_tPos & 0xff); \
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c_tPos >>= 8;
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#define SET_LL4(i,n) \
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{ if (((i) & 0x1) == 0) \
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s->ll4[(i) >> 1] = (s->ll4[(i) >> 1] & 0xf0) | (n); else \
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s->ll4[(i) >> 1] = (s->ll4[(i) >> 1] & 0x0f) | ((n) << 4); \
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}
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#define GET_LL4(i) \
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((((UInt32)(s->ll4[(i) >> 1])) >> (((i) << 2) & 0x4)) & 0xF)
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#define SET_LL(i,n) \
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{ s->ll16[i] = (UInt16)(n & 0x0000ffff); \
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SET_LL4(i, n >> 16); \
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}
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#define GET_LL(i) \
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(((UInt32)s->ll16[i]) | (GET_LL4(i) << 16))
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#define BZ_GET_SMALL(cccc) \
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cccc = BZ2_indexIntoF ( s->tPos, s->cftab ); \
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s->tPos = GET_LL(s->tPos);
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/*-- externs for decompression. --*/
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extern Int32
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BZ2_indexIntoF ( Int32, Int32* );
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extern Int32
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BZ2_decompress ( DState* );
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extern void
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BZ2_hbCreateDecodeTables ( Int32*, Int32*, Int32*, UChar*,
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Int32, Int32, Int32 );
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#endif
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/*-- BZ_NO_STDIO seems to make NULL disappear on some platforms. --*/
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#ifdef BZ_NO_STDIO
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#ifndef NULL
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#define NULL 0
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#endif
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#ifdef __cplusplus
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