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NSIS/Source/bzip2/bzlib.h
anders_k f69251d87e (C) 2021 
git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@7245 212acab6-be3b-0410-9dea-997c60f758d6
2021-01-01 20:27:52 +00:00

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/*
* This file is a part of the bzip2 compression module for NSIS.
*
* Copyright and license information can be found below.
* Modifications Copyright (C) 1999-2021 Nullsoft and Contributors
*
* The original zlib source code is available at
* http://www.bzip.org/
*
* This modification is not compatible with the original bzip2.
*
* This software is provided 'as-is', without any express or implied
* warranty.
*
* Reviewed for Unicode support by Jim Park -- 08/27/2007
*/
/*-------------------------------------------------------------*/
/*--- Public header file for the library. ---*/
/*--- bzlib.h ---*/
/*-------------------------------------------------------------*/
/*--
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.
--*/
#ifndef _BZLIB_H
#define _BZLIB_H
#ifdef __cplusplus
extern "C" {
#endif
#include "../exehead/config.h"
#include "../Platform.h"
#define BZ_RUN 0
#define BZ_FLUSH 1
#define BZ_FINISH 2
#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)
/*-- Constants for the back end. --*/
#define BZ_MAX_ALPHA_SIZE 258
#define BZ_MAX_CODE_LEN 23
#define BZ_RUNA 0
#define BZ_RUNB 1
#define BZ_N_GROUPS 6
#define BZ_G_SIZE 50
#define BZ_N_ITERS 4
#define BZ_MAX_SELECTORS (2 + (900000 / BZ_G_SIZE))
typedef char Char;
typedef unsigned char Bool;
typedef unsigned char UChar;
typedef int Int32;
typedef unsigned int UInt32;
typedef short Int16;
typedef unsigned short UInt16;
#define True ((Bool)1)
#define False ((Bool)0)
#define AssertD(cond,msg) /* */
#define AssertH(cond,errcode) /* */
#define AssertD(cond,msg) /* */
#define VPrintf0(zf) /* */
#define VPrintf1(zf,za1) /* */
#define VPrintf2(zf,za1,za2) /* */
#define VPrintf3(zf,za1,za2,za3) /* */
#define VPrintf4(zf,za1,za2,za3,za4) /* */
#define VPrintf5(zf,za1,za2,za3,za4,za5) /* */
#ifndef EXEHEAD
#include <stdlib.h>
#define BZALLOC(items) malloc(items)
#define BZFREE(addr) { if (addr) free(addr); }
#define mini_memcpy memcpy
typedef struct {
unsigned char *next_in;
unsigned int avail_in;
unsigned char *next_out;
unsigned int avail_out;
void *state;
} bz_stream;
/*-- Core (low-level) library functions --*/
extern int BZ2_bzCompressInit(
bz_stream* strm,
int blockSize100k,
int verbosity,
int workFactor
);
extern int BZ2_bzCompress( bz_stream* strm, int action );
extern int BZ2_bzCompressEnd(bz_stream* strm );
/*-- States and modes for compression. --*/
#define BZ_M_IDLE 1
#define BZ_M_RUNNING 2
#define BZ_M_FLUSHING 3
#define BZ_M_FINISHING 4
#define BZ_S_OUTPUT 1
#define BZ_S_INPUT 2
#define BZ_N_RADIX 2
#define BZ_N_QSORT 12
#define BZ_N_SHELL 18
#define BZ_N_OVERSHOOT (BZ_N_RADIX + BZ_N_QSORT + BZ_N_SHELL + 2)
/*-- Structure holding all the compression-side stuff. --*/
typedef struct {
/* pointer back to the struct bz_stream */
bz_stream *strm;
/* mode this stream is in, and whether inputting */
/* or outputting data */
Int32 mode;
Int32 state;
/* remembers avail_in when flush/finish requested */
UInt32 avail_in_expect;
/* for doing the block sorting */
UInt32* arr1;
UInt32* arr2;
UInt32* ftab;
Int32 origPtr;
/* aliases for arr1 and arr2 */
UInt32* ptr;
UChar* block;
UInt16* mtfv;
UChar* zbits;
/* for deciding when to use the fallback sorting algorithm */
Int32 workFactor;
/* run-length-encoding of the input */
UInt32 state_in_ch;
Int32 state_in_len;
/* input and output limits and current posns */
Int32 nblock;
Int32 nblockMAX;
Int32 numZ;
Int32 state_out_pos;
/* map of bytes used in block */
Int32 nInUse;
Bool inUse[256];
UChar unseqToSeq[256];
/* the buffer for bit stream creation */
UInt32 bsBuff;
Int32 bsLive;
/* misc administratium */
Int32 blockNo;
/* stuff for coding the MTF values */
Int32 nMTF;
Int32 mtfFreq [BZ_MAX_ALPHA_SIZE];
UChar selector [BZ_MAX_SELECTORS];
UChar selectorMtf[BZ_MAX_SELECTORS];
UChar len [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
Int32 code [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
Int32 rfreq [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
/* second dimension: only 3 needed; 4 makes index calculations faster */
UInt32 len_pack[BZ_MAX_ALPHA_SIZE][4];
} EState;
/*-- externs for compression. --*/
extern void BZ2_blockSort ( EState* );
extern void BZ2_compressBlock ( EState*, Bool );
extern void BZ2_bsInitWrite ( EState* );
extern void BZ2_hbAssignCodes ( Int32*, UChar*, Int32, Int32, Int32 );
extern void BZ2_hbMakeCodeLengths ( UChar*, Int32*, Int32, Int32 );
#else//EXEHEAD
/*-- states for decompression. --*/
#define BZ_X_IDLE 1
#define BZ_X_OUTPUT 2
#define BZ_X_BLKHDR_1 11
#define BZ_X_RANDBIT 12
#define BZ_X_ORIGPTR_1 13
#define BZ_X_ORIGPTR_2 14
#define BZ_X_ORIGPTR_3 15
#define BZ_X_MAPPING_1 16
#define BZ_X_MAPPING_2 17
#define BZ_X_SELECTOR_1 18
#define BZ_X_SELECTOR_2 19
#define BZ_X_SELECTOR_3 20
#define BZ_X_CODING_1 21
#define BZ_X_CODING_2 22
#define BZ_X_CODING_3 23
#define BZ_X_MTF_1 24
#define BZ_X_MTF_2 25
#define BZ_X_MTF_3 26
#define BZ_X_MTF_4 27
#define BZ_X_MTF_5 28
#define BZ_X_MTF_6 29
/*-- Constants for the fast MTF decoder. --*/
#define MTFA_SIZE 4096
#define MTFL_SIZE 16
/* save area for scalars in the main decompress code */
typedef struct {
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;
} DState_save;
/*-- Structure holding all the decompression-side stuff. --*/
typedef struct {
/* pointer back to the struct bz_stream */
unsigned char *next_in;
unsigned int avail_in;
unsigned char *next_out;
unsigned int avail_out;
/* state indicator for this stream */
char state;
UChar state_out_ch;
Int32 state_out_len;
Int32 nblock_used;
Int32 k0;
UInt32 tPos;
/* the buffer for bit stream reading */
UInt32 bsBuff;
Int32 bsLive;
/* for undoing the Burrows-Wheeler transform */
Int32 origPtr;
Int32 unzftab[256];
Int32 cftab[257];
Int32 cftabCopy[257];
#ifndef NSIS_COMPRESS_BZIP2_SMALLMODE
/* for undoing the Burrows-Wheeler transform (FAST) */
UInt32 tt[ NSIS_COMPRESS_BZIP2_LEVEL * 100000 ];
#else
/* for undoing the Burrows-Wheeler transform (SMALL) */
UInt16 ll16 [ NSIS_COMPRESS_BZIP2_LEVEL*100000 ];
UChar ll4 [((1 + NSIS_COMPRESS_BZIP2_LEVEL*100000) >> 1) ];
#endif
/* map of bytes used in block */
Int32 nInUse;
Bool inUse[256];
Bool inUse16[16];
UChar seqToUnseq[256];
/* for decoding the MTF values */
UChar mtfa [MTFA_SIZE];
Int32 mtfbase[256 / MTFL_SIZE];
UChar selector [BZ_MAX_SELECTORS];
UChar selectorMtf[BZ_MAX_SELECTORS];
UChar len [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
Int32 limit [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
Int32 base [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
Int32 perm [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
Int32 minLens[BZ_N_GROUPS];
/* save area for scalars in the main decompress code */
DState_save save;
} DState;
#ifndef NSIS_COMPRESS_BZIP2_SMALLMODE
/*-- Macros for decompression. --*/
#define BZ_GET_FAST(cccc) \
s->tPos = s->tt[s->tPos]; \
cccc = (UChar)(s->tPos & 0xff); \
s->tPos >>= 8;
#define BZ_GET_FAST_C(cccc) \
c_tPos = c_tt[c_tPos]; \
cccc = (UChar)(c_tPos & 0xff); \
c_tPos >>= 8;
#else//NSIS_COMPRESS_BZIP2_SMALLMODE
#define SET_LL4(i,n) \
{ if (((i) & 0x1) == 0) \
s->ll4[(i) >> 1] = (s->ll4[(i) >> 1] & 0xf0) | (n); else \
s->ll4[(i) >> 1] = (s->ll4[(i) >> 1] & 0x0f) | ((n) << 4); \
}
#define GET_LL4(i) \
((((UInt32)(s->ll4[(i) >> 1])) >> (((i) << 2) & 0x4)) & 0xF)
#define SET_LL(i,n) \
{ s->ll16[i] = (UInt16)(n & 0x0000ffff); \
SET_LL4(i, n >> 16); \
}
#define GET_LL(i) \
(((UInt32)s->ll16[i]) | (GET_LL4(i) << 16))
#define BZ_GET_SMALL(cccc) \
cccc = BZ2_indexIntoF ( s->tPos, s->cftab ); \
s->tPos = GET_LL(s->tPos);
extern Int32 BZ2_indexIntoF( Int32, Int32* );
#endif//smallmode
/*-- externs for decompression. --*/
extern Int32 NSISCALL BZ2_decompress ( DState* );
extern void NSISCALL BZ2_hbCreateDecodeTables ( Int32*, Int32*, Int32*, UChar*,
Int32, Int32, Int32 );
#define BZ2_bzDecompressInit(s) { (s)->state = BZ_X_BLKHDR_1; (s)->bsLive = 0; }
int NSISCALL BZ2_bzDecompress(DState *s);
#endif//EXEHEAD
#ifdef __cplusplus
}
#endif
#endif
/*-------------------------------------------------------------*/
/*--- end bzlib.h ---*/
/*-------------------------------------------------------------*/
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