kc3-lang/bzip2/bzlib_private.h

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• Hash : 6a8690fc
  Author :
  Date : 2019-07-13T17:17:58
  

  Prepare for 1.0.8 release.
  

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• bzlib_private.h

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  /*-------------------------------------------------------------*/
  /*--- Private header file for the library.                  ---*/
  /*---                                       bzlib_private.h ---*/
  /*-------------------------------------------------------------*/
  
  /* ------------------------------------------------------------------
     This file is part of bzip2/libbzip2, a program and library for
     lossless, block-sorting data compression.
  
     bzip2/libbzip2 version 1.0.8 of 13 July 2019
     Copyright (C) 1996-2019 Julian Seward <jseward@acm.org>
  
     Please read the WARNING, DISCLAIMER and PATENTS sections in the 
     README file.
  
     This program is released under the terms of the license contained
     in the file LICENSE.
     ------------------------------------------------------------------ */
  
  
  #ifndef _BZLIB_PRIVATE_H
  #define _BZLIB_PRIVATE_H
  
  #include <stdlib.h>
  
  #ifndef BZ_NO_STDIO
  #include <stdio.h>
  #include <ctype.h>
  #include <string.h>
  #endif
  
  #include "bzlib.h"
  
  
  
  /*-- General stuff. --*/
  
  #define BZ_VERSION  "1.0.8, 13-Jul-2019"
  
  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)
  
  #ifndef __GNUC__
  #define __inline__  /* */
  #endif 
  
  #ifndef BZ_NO_STDIO
  
  extern void BZ2_bz__AssertH__fail ( int errcode );
  #define AssertH(cond,errcode) \
     { if (!(cond)) BZ2_bz__AssertH__fail ( errcode ); }
  
  #if BZ_DEBUG
  #define AssertD(cond,msg) \
     { if (!(cond)) {       \
        fprintf ( stderr,   \
          "\n\nlibbzip2(debug build): internal error\n\t%s\n", msg );\
        exit(1); \
     }}
  #else
  #define AssertD(cond,msg) /* */
  #endif
  
  #define VPrintf0(zf) \
     fprintf(stderr,zf)
  #define VPrintf1(zf,za1) \
     fprintf(stderr,zf,za1)
  #define VPrintf2(zf,za1,za2) \
     fprintf(stderr,zf,za1,za2)
  #define VPrintf3(zf,za1,za2,za3) \
     fprintf(stderr,zf,za1,za2,za3)
  #define VPrintf4(zf,za1,za2,za3,za4) \
     fprintf(stderr,zf,za1,za2,za3,za4)
  #define VPrintf5(zf,za1,za2,za3,za4,za5) \
     fprintf(stderr,zf,za1,za2,za3,za4,za5)
  
  #else
  
  extern void bz_internal_error ( int errcode );
  #define AssertH(cond,errcode) \
     { if (!(cond)) bz_internal_error ( errcode ); }
  #define AssertD(cond,msg)                do { } while (0)
  #define VPrintf0(zf)                     do { } while (0)
  #define VPrintf1(zf,za1)                 do { } while (0)
  #define VPrintf2(zf,za1,za2)             do { } while (0)
  #define VPrintf3(zf,za1,za2,za3)         do { } while (0)
  #define VPrintf4(zf,za1,za2,za3,za4)     do { } while (0)
  #define VPrintf5(zf,za1,za2,za3,za4,za5) do { } while (0)
  
  #endif
  
  
  #define BZALLOC(nnn) (strm->bzalloc)(strm->opaque,(nnn),1)
  #define BZFREE(ppp)  (strm->bzfree)(strm->opaque,(ppp))
  
  
  /*-- Header bytes. --*/
  
  #define BZ_HDR_B 0x42   /* 'B' */
  #define BZ_HDR_Z 0x5a   /* 'Z' */
  #define BZ_HDR_h 0x68   /* 'h' */
  #define BZ_HDR_0 0x30   /* '0' */
    
  /*-- 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))
  
  
  
  /*-- Stuff for randomising repetitive blocks. --*/
  
  extern Int32 BZ2_rNums[512];
  
  #define BZ_RAND_DECLS                          \
     Int32 rNToGo;                               \
     Int32 rTPos                                 \
  
  #define BZ_RAND_INIT_MASK                      \
     s->rNToGo = 0;                              \
     s->rTPos  = 0                               \
  
  #define BZ_RAND_MASK ((s->rNToGo == 1) ? 1 : 0)
  
  #define BZ_RAND_UPD_MASK                       \
     if (s->rNToGo == 0) {                       \
        s->rNToGo = BZ2_rNums[s->rTPos];         \
        s->rTPos++;                              \
        if (s->rTPos == 512) s->rTPos = 0;       \
     }                                           \
     s->rNToGo--;
  
  
  
  /*-- Stuff for doing CRCs. --*/
  
  extern UInt32 BZ2_crc32Table[256];
  
  #define BZ_INITIALISE_CRC(crcVar)              \
  {                                              \
     crcVar = 0xffffffffL;                       \
  }
  
  #define BZ_FINALISE_CRC(crcVar)                \
  {                                              \
     crcVar = ~(crcVar);                         \
  }
  
  #define BZ_UPDATE_CRC(crcVar,cha)              \
  {                                              \
     crcVar = (crcVar << 8) ^                    \
              BZ2_crc32Table[(crcVar >> 24) ^    \
                             ((UChar)cha)];      \
  }
  
  
  
  /*-- 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;
        BZ_RAND_DECLS;
  
        /* 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;
  
        /* block and combined CRCs */
        UInt32   blockCRC;
        UInt32   combinedCRC;
  
        /* misc administratium */
        Int32    verbosity;
        Int32    blockNo;
        Int32    blockSize100k;
  
        /* 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 );
  
  
  
  /*-- 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
  
  
  
  /*-- Constants for the fast MTF decoder. --*/
  
  #define MTFA_SIZE 4096
  #define MTFL_SIZE 16
  
  
  
  /*-- Structure holding all the decompression-side stuff. --*/
  
  typedef
     struct {
        /* pointer back to the struct bz_stream */
        bz_stream* strm;
  
        /* state indicator for this stream */
        Int32    state;
  
        /* for doing the final run-length decoding */
        UChar    state_out_ch;
        Int32    state_out_len;
        Bool     blockRandomised;
        BZ_RAND_DECLS;
  
        /* the buffer for bit stream reading */
        UInt32   bsBuff;
        Int32    bsLive;
  
        /* misc administratium */
        Int32    blockSize100k;
        Bool     smallDecompress;
        Int32    currBlockNo;
        Int32    verbosity;
  
        /* for undoing the Burrows-Wheeler transform */
        Int32    origPtr;
        UInt32   tPos;
        Int32    k0;
        Int32    unzftab[256];
        Int32    nblock_used;
        Int32    cftab[257];
        Int32    cftabCopy[257];
  
        /* for undoing the Burrows-Wheeler transform (FAST) */
        UInt32   *tt;
  
        /* for undoing the Burrows-Wheeler transform (SMALL) */
        UInt16   *ll16;
        UChar    *ll4;
  
        /* stored and calculated CRCs */
        UInt32   storedBlockCRC;
        UInt32   storedCombinedCRC;
        UInt32   calculatedBlockCRC;
        UInt32   calculatedCombinedCRC;
  
        /* 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 */
        Int32    save_i;
        Int32    save_j;
        Int32    save_t;
        Int32    save_alphaSize;
        Int32    save_nGroups;
        Int32    save_nSelectors;
        Int32    save_EOB;
        Int32    save_groupNo;
        Int32    save_groupPos;
        Int32    save_nextSym;
        Int32    save_nblockMAX;
        Int32    save_nblock;
        Int32    save_es;
        Int32    save_N;
        Int32    save_curr;
        Int32    save_zt;
        Int32    save_zn; 
        Int32    save_zvec;
        Int32    save_zj;
        Int32    save_gSel;
        Int32    save_gMinlen;
        Int32*   save_gLimit;
        Int32*   save_gBase;
        Int32*   save_gPerm;
  
     }
     DState;
  
  
  
  /*-- Macros for decompression. --*/
  
  #define BZ_GET_FAST(cccc)                     \
      /* c_tPos is unsigned, hence test < 0 is pointless. */ \
      if (s->tPos >= (UInt32)100000 * (UInt32)s->blockSize100k) return True; \
      s->tPos = s->tt[s->tPos];                 \
      cccc = (UChar)(s->tPos & 0xff);           \
      s->tPos >>= 8;
  
  #define BZ_GET_FAST_C(cccc)                   \
      /* c_tPos is unsigned, hence test < 0 is pointless. */ \
      if (c_tPos >= (UInt32)100000 * (UInt32)ro_blockSize100k) return True; \
      c_tPos = c_tt[c_tPos];                    \
      cccc = (UChar)(c_tPos & 0xff);            \
      c_tPos >>= 8;
  
  #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)                            \
      /* c_tPos is unsigned, hence test < 0 is pointless. */ \
      if (s->tPos >= (UInt32)100000 * (UInt32)s->blockSize100k) return True; \
      cccc = BZ2_indexIntoF ( s->tPos, s->cftab );    \
      s->tPos = GET_LL(s->tPos);
  
  
  /*-- externs for decompression. --*/
  
  extern Int32 
  BZ2_indexIntoF ( Int32, Int32* );
  
  extern Int32 
  BZ2_decompress ( DState* );
  
  extern void 
  BZ2_hbCreateDecodeTables ( Int32*, Int32*, Int32*, UChar*,
                             Int32,  Int32, Int32 );
  
  
  #endif
  
  
  /*-- BZ_NO_STDIO seems to make NULL disappear on some platforms. --*/
  
  #ifdef BZ_NO_STDIO
  #ifndef NULL
  #define NULL 0
  #endif
  #endif
  
  
  /*-------------------------------------------------------------*/
  /*--- end                                   bzlib_private.h ---*/
  /*-------------------------------------------------------------*/
  

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