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bzlib.c File Reference
#include "bzlib_private.h"

Go to the source code of this file.

Classes

struct  bzFile

Defines

#define ADD_CHAR_TO_BLOCK(zs, zchh0)
#define BZ_SETERR(eee)
#define SET_BINARY_MODE(file)

Functions

void BZ2_bz__AssertH__fail (int errcode)
static int bz_config_ok (void)
static voiddefault_bzalloc (void *opaque, Int32 items, Int32 size)
static void default_bzfree (void *opaque, void *addr)
static void prepare_new_block (EState *s)
static void init_RL (EState *s)
static Bool isempty_RL (EState *s)
int BZ_API() BZ2_bzCompressInit (bz_stream *strm, int blockSize100k, int verbosity, int workFactor)
static void add_pair_to_block (EState *s)
static void flush_RL (EState *s)
static Bool copy_input_until_stop (EState *s)
static Bool copy_output_until_stop (EState *s)
static Bool handle_compress (bz_stream *strm)
int BZ_API() BZ2_bzCompress (bz_stream *strm, int action)
int BZ_API() BZ2_bzCompressEnd (bz_stream *strm)
int BZ_API() BZ2_bzDecompressInit (bz_stream *strm, int verbosity, int small)
static Bool unRLE_obuf_to_output_FAST (DState *s)
__inline__ Int32 BZ2_indexIntoF (Int32 indx, Int32 *cftab)
static Bool unRLE_obuf_to_output_SMALL (DState *s)
int BZ_API() BZ2_bzDecompress (bz_stream *strm)
int BZ_API() BZ2_bzDecompressEnd (bz_stream *strm)
static Bool myfeof (FILE *f)
BZFILE *BZ_API() BZ2_bzWriteOpen (int *bzerror, FILE *f, int blockSize100k, int verbosity, int workFactor)
void BZ_API() BZ2_bzWrite (int *bzerror, BZFILE *b, void *buf, int len)
void BZ_API() BZ2_bzWriteClose (int *bzerror, BZFILE *b, int abandon, unsigned int *nbytes_in, unsigned int *nbytes_out)
void BZ_API() BZ2_bzWriteClose64 (int *bzerror, BZFILE *b, int abandon, unsigned int *nbytes_in_lo32, unsigned int *nbytes_in_hi32, unsigned int *nbytes_out_lo32, unsigned int *nbytes_out_hi32)
BZFILE *BZ_API() BZ2_bzReadOpen (int *bzerror, FILE *f, int verbosity, int small, void *unused, int nUnused)
void BZ_API() BZ2_bzReadClose (int *bzerror, BZFILE *b)
int BZ_API() BZ2_bzRead (int *bzerror, BZFILE *b, void *buf, int len)
void BZ_API() BZ2_bzReadGetUnused (int *bzerror, BZFILE *b, void **unused, int *nUnused)
int BZ_API() BZ2_bzBuffToBuffCompress (char *dest, unsigned int *destLen, char *source, unsigned int sourceLen, int blockSize100k, int verbosity, int workFactor)
int BZ_API() BZ2_bzBuffToBuffDecompress (char *dest, unsigned int *destLen, char *source, unsigned int sourceLen, int small, int verbosity)
const char *BZ_API() BZ2_bzlibVersion (void)
static BZFILEbzopen_or_bzdopen (const char *path, int fd, const char *mode, int open_mode)
BZFILE *BZ_API() BZ2_bzopen (const char *path, const char *mode)
BZFILE *BZ_API() BZ2_bzdopen (int fd, const char *mode)
int BZ_API() BZ2_bzread (BZFILE *b, void *buf, int len)
int BZ_API() BZ2_bzwrite (BZFILE *b, void *buf, int len)
int BZ_API() BZ2_bzflush (BZFILE *b)
void BZ_API() BZ2_bzclose (BZFILE *b)
const char *BZ_API() BZ2_bzerror (BZFILE *b, int *errnum)

Variables

static char * bzerrorstrings []

Class Documentation

struct bzFile

Definition at line 936 of file bzlib.c.

Collaboration diagram for bzFile:
Class Members
Char buf
Int32 bufN
FILE * handle
Bool initialisedOk
Int32 lastErr
bz_stream strm
Bool writing

Define Documentation

#define ADD_CHAR_TO_BLOCK (   zs,
  zchh0 
)
Value:
{                                                 \
   UInt32 zchh = (UInt32)(zchh0);                 \
   /*-- fast track the common case --*/           \
   if (zchh != zs->state_in_ch &&                 \
       zs->state_in_len == 1) {                   \
      UChar ch = (UChar)(zs->state_in_ch);        \
      BZ_UPDATE_CRC( zs->blockCRC, ch );          \
      zs->inUse[zs->state_in_ch] = True;          \
      zs->block[zs->nblock] = (UChar)ch;          \
      zs->nblock++;                               \
      zs->state_in_ch = zchh;                     \
   }                                              \
   else                                           \
   /*-- general, uncommon cases --*/              \
   if (zchh != zs->state_in_ch ||                 \
      zs->state_in_len == 255) {                  \
      if (zs->state_in_ch < 256)                  \
         add_pair_to_block ( zs );                \
      zs->state_in_ch = zchh;                     \
      zs->state_in_len = 1;                       \
   } else {                                       \
      zs->state_in_len++;                         \
   }                                              \
}

Definition at line 305 of file bzlib.c.

#define BZ_SETERR (   eee)
Value:
{                                         \
   if (bzerror != NULL) *bzerror = eee;   \
   if (bzf != NULL) bzf->lastErr = eee;   \
}

Definition at line 930 of file bzlib.c.

Definition at line 1425 of file bzlib.c.


Function Documentation

static void add_pair_to_block ( EState s) [static]

Definition at line 261 of file bzlib.c.

{
   Int32 i;
   UChar ch = (UChar)(s->state_in_ch);
   for (i = 0; i < s->state_in_len; i++) {
      BZ_UPDATE_CRC( s->blockCRC, ch );
   }
   s->inUse[s->state_in_ch] = True;
   switch (s->state_in_len) {
      case 1:
         s->block[s->nblock] = (UChar)ch; s->nblock++;
         break;
      case 2:
         s->block[s->nblock] = (UChar)ch; s->nblock++;
         s->block[s->nblock] = (UChar)ch; s->nblock++;
         break;
      case 3:
         s->block[s->nblock] = (UChar)ch; s->nblock++;
         s->block[s->nblock] = (UChar)ch; s->nblock++;
         s->block[s->nblock] = (UChar)ch; s->nblock++;
         break;
      default:
         s->inUse[s->state_in_len-4] = True;
         s->block[s->nblock] = (UChar)ch; s->nblock++;
         s->block[s->nblock] = (UChar)ch; s->nblock++;
         s->block[s->nblock] = (UChar)ch; s->nblock++;
         s->block[s->nblock] = (UChar)ch; s->nblock++;
         s->block[s->nblock] = ((UChar)(s->state_in_len-4));
         s->nblock++;
         break;
   }
}

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Definition at line 86 of file bzlib.c.

{
   fprintf(stderr, 
      "\n\nbzip2/libbzip2: internal error number %d.\n"
      "This is a bug in bzip2/libbzip2, %s.\n"
      "Please report it to me at: jseward@bzip.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, 15 February 2005.\n\n",
      errcode,
      BZ2_bzlibVersion()
   );

   if (errcode == 1007) {
   fprintf(stderr,
      "\n*** A special note about internal error number 1007 ***\n"
      "\n"
      "Experience suggests that a common cause of i.e. 1007\n"
      "is unreliable memory or other hardware.  The 1007 assertion\n"
      "just happens to cross-check the results of huge numbers of\n"
      "memory reads/writes, and so acts (unintendedly) as a stress\n"
      "test of your memory system.\n"
      "\n"
      "I suggest the following: try compressing the file again,\n"
      "possibly monitoring progress in detail with the -vv flag.\n"
      "\n"
      "* If the error cannot be reproduced, and/or happens at different\n"
      "  points in compression, you may have a flaky memory system.\n"
      "  Try a memory-test program.  I have used Memtest86\n"
      "  (www.memtest86.com).  At the time of writing it is free (GPLd).\n"
      "  Memtest86 tests memory much more thorougly than your BIOSs\n"
      "  power-on test, and may find failures that the BIOS doesn't.\n"
      "\n"
      "* If the error can be repeatably reproduced, this is a bug in\n"
      "  bzip2, and I would very much like to hear about it.  Please\n"
      "  let me know, and, ideally, save a copy of the file causing the\n"
      "  problem -- without which I will be unable to investigate it.\n"
      "\n"
   );
   }

   exit(3);
}

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int BZ_API() BZ2_bzBuffToBuffCompress ( char *  dest,
unsigned int destLen,
char *  source,
unsigned int  sourceLen,
int  blockSize100k,
int  verbosity,
int  workFactor 
)

Definition at line 1292 of file bzlib.c.

{
   bz_stream strm;
   int ret;

   if (dest == NULL || destLen == NULL || 
       source == NULL ||
       blockSize100k < 1 || blockSize100k > 9 ||
       verbosity < 0 || verbosity > 4 ||
       workFactor < 0 || workFactor > 250) 
      return BZ_PARAM_ERROR;

   if (workFactor == 0) workFactor = 30;
   strm.bzalloc = NULL;
   strm.bzfree = NULL;
   strm.opaque = NULL;
   ret = BZ2_bzCompressInit ( &strm, blockSize100k, 
                              verbosity, workFactor );
   if (ret != BZ_OK) return ret;

   strm.next_in = source;
   strm.next_out = dest;
   strm.avail_in = sourceLen;
   strm.avail_out = *destLen;

   ret = BZ2_bzCompress ( &strm, BZ_FINISH );
   if (ret == BZ_FINISH_OK) goto output_overflow;
   if (ret != BZ_STREAM_END) goto errhandler;

   /* normal termination */
   *destLen -= strm.avail_out;   
   BZ2_bzCompressEnd ( &strm );
   return BZ_OK;

   output_overflow:
   BZ2_bzCompressEnd ( &strm );
   return BZ_OUTBUFF_FULL;

   errhandler:
   BZ2_bzCompressEnd ( &strm );
   return ret;
}

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int BZ_API() BZ2_bzBuffToBuffDecompress ( char *  dest,
unsigned int destLen,
char *  source,
unsigned int  sourceLen,
int  small,
int  verbosity 
)

Definition at line 1344 of file bzlib.c.

{
   bz_stream strm;
   int ret;

   if (dest == NULL || destLen == NULL || 
       source == NULL ||
       (small != 0 && small != 1) ||
       verbosity < 0 || verbosity > 4) 
          return BZ_PARAM_ERROR;

   strm.bzalloc = NULL;
   strm.bzfree = NULL;
   strm.opaque = NULL;
   ret = BZ2_bzDecompressInit ( &strm, verbosity, small );
   if (ret != BZ_OK) return ret;

   strm.next_in = source;
   strm.next_out = dest;
   strm.avail_in = sourceLen;
   strm.avail_out = *destLen;

   ret = BZ2_bzDecompress ( &strm );
   if (ret == BZ_OK) goto output_overflow_or_eof;
   if (ret != BZ_STREAM_END) goto errhandler;

   /* normal termination */
   *destLen -= strm.avail_out;
   BZ2_bzDecompressEnd ( &strm );
   return BZ_OK;

   output_overflow_or_eof:
   if (strm.avail_out > 0) {
      BZ2_bzDecompressEnd ( &strm );
      return BZ_UNEXPECTED_EOF;
   } else {
      BZ2_bzDecompressEnd ( &strm );
      return BZ_OUTBUFF_FULL;
   };      

   errhandler:
   BZ2_bzDecompressEnd ( &strm );
   return ret; 
}

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Definition at line 1559 of file bzlib.c.

{
   int bzerr;
   FILE *fp = ((bzFile *)b)->handle;
   
   if (b==NULL) {return;}
   if(((bzFile*)b)->writing){
      BZ2_bzWriteClose(&bzerr,b,0,NULL,NULL);
      if(bzerr != BZ_OK){
         BZ2_bzWriteClose(NULL,b,1,NULL,NULL);
      }
   }else{
      BZ2_bzReadClose(&bzerr,b);
   }
   if(fp!=stdin && fp!=stdout){
      fclose(fp);
   }
}

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int BZ_API() BZ2_bzCompress ( bz_stream strm,
int  action 
)

Definition at line 452 of file bzlib.c.

{
   Bool progress;
   EState* 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;

   preswitch:
   switch (s->mode) {

      case BZ_M_IDLE:
         return BZ_SEQUENCE_ERROR;

      case BZ_M_RUNNING:
         if (action == BZ_RUN) {
            progress = handle_compress ( strm );
            return progress ? BZ_RUN_OK : BZ_PARAM_ERROR;
         } 
         else
        if (action == BZ_FLUSH) {
            s->avail_in_expect = strm->avail_in;
            s->mode = BZ_M_FLUSHING;
            goto preswitch;
         }
         else
         if (action == BZ_FINISH) {
            s->avail_in_expect = strm->avail_in;
            s->mode = BZ_M_FINISHING;
            goto preswitch;
         }
         else 
            return BZ_PARAM_ERROR;

      case BZ_M_FLUSHING:
         if (action != BZ_FLUSH) return BZ_SEQUENCE_ERROR;
         if (s->avail_in_expect != s->strm->avail_in) 
            return BZ_SEQUENCE_ERROR;
         progress = handle_compress ( strm );
         if (s->avail_in_expect > 0 || !isempty_RL(s) ||
             s->state_out_pos < s->numZ) return BZ_FLUSH_OK;
         s->mode = BZ_M_RUNNING;
         return BZ_RUN_OK;

      case BZ_M_FINISHING:
         if (action != BZ_FINISH) return BZ_SEQUENCE_ERROR;
         if (s->avail_in_expect != s->strm->avail_in) 
            return BZ_SEQUENCE_ERROR;
         progress = handle_compress ( strm );
         if (!progress) return BZ_SEQUENCE_ERROR;
         if (s->avail_in_expect > 0 || !isempty_RL(s) ||
             s->state_out_pos < s->numZ) return BZ_FINISH_OK;
         s->mode = BZ_M_IDLE;
         return BZ_STREAM_END;
   }
   return BZ_OK; /*--not reached--*/
}

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Definition at line 513 of file bzlib.c.

{
   EState* 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;

   if (s->arr1 != NULL) BZFREE(s->arr1);
   if (s->arr2 != NULL) BZFREE(s->arr2);
   if (s->ftab != NULL) BZFREE(s->ftab);
   BZFREE(strm->state);

   strm->state = NULL;   

   return BZ_OK;
}

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int BZ_API() BZ2_bzCompressInit ( bz_stream strm,
int  blockSize100k,
int  verbosity,
int  workFactor 
)

Definition at line 194 of file bzlib.c.

{
   Int32   n;
   EState* s;

   if (!bz_config_ok()) return BZ_CONFIG_ERROR;

   if (strm == NULL || 
       blockSize100k < 1 || blockSize100k > 9 ||
       workFactor < 0 || workFactor > 250)
     return BZ_PARAM_ERROR;

   if (workFactor == 0) workFactor = 30;
   if (strm->bzalloc == NULL) strm->bzalloc = default_bzalloc;
   if (strm->bzfree == NULL) strm->bzfree = default_bzfree;

   s = BZALLOC( sizeof(EState) );
   if (s == NULL) return BZ_MEM_ERROR;
   s->strm = strm;

   s->arr1 = NULL;
   s->arr2 = NULL;
   s->ftab = NULL;

   n       = 100000 * blockSize100k;
   s->arr1 = BZALLOC( n                  * sizeof(UInt32) );
   s->arr2 = BZALLOC( (n+BZ_N_OVERSHOOT) * sizeof(UInt32) );
   s->ftab = BZALLOC( 65537              * sizeof(UInt32) );

   if (s->arr1 == NULL || s->arr2 == NULL || s->ftab == NULL) {
      if (s->arr1 != NULL) BZFREE(s->arr1);
      if (s->arr2 != NULL) BZFREE(s->arr2);
      if (s->ftab != NULL) BZFREE(s->ftab);
      if (s       != NULL) BZFREE(s);
      return BZ_MEM_ERROR;
   }

   s->blockNo           = 0;
   s->state             = BZ_S_INPUT;
   s->mode              = BZ_M_RUNNING;
   s->combinedCRC       = 0;
   s->blockSize100k     = blockSize100k;
   s->nblockMAX         = 100000 * blockSize100k - 19;
   s->verbosity         = verbosity;
   s->workFactor        = workFactor;

   s->block             = (UChar*)s->arr2;
   s->mtfv              = (UInt16*)s->arr1;
   s->zbits             = NULL;
   s->ptr               = (UInt32*)s->arr1;

   strm->state          = s;
   strm->total_in_lo32  = 0;
   strm->total_in_hi32  = 0;
   strm->total_out_lo32 = 0;
   strm->total_out_hi32 = 0;
   init_RL ( s );
   prepare_new_block ( s );
   return BZ_OK;
}

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Definition at line 852 of file bzlib.c.

{
   Bool    corrupt;
   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 (True) {
      if (s->state == BZ_X_IDLE) return BZ_SEQUENCE_ERROR;
      if (s->state == BZ_X_OUTPUT) {
         if (s->smallDecompress)
            corrupt = unRLE_obuf_to_output_SMALL ( s ); else
            corrupt = unRLE_obuf_to_output_FAST  ( s );
         if (corrupt) return BZ_DATA_ERROR;
         if (s->nblock_used == s->save_nblock+1 && s->state_out_len == 0) {
            BZ_FINALISE_CRC ( s->calculatedBlockCRC );
            if (s->verbosity >= 3) 
               VPrintf2 ( " {0x%08x, 0x%08x}", s->storedBlockCRC, 
                          s->calculatedBlockCRC );
            if (s->verbosity >= 2) VPrintf0 ( "]" );
            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) {
         Int32 r = BZ2_decompress ( s );
         if (r == BZ_STREAM_END) {
            if (s->verbosity >= 3)
               VPrintf2 ( "\n    combined CRCs: stored = 0x%08x, computed = 0x%08x", 
                          s->storedCombinedCRC, s->calculatedCombinedCRC );
            if (s->calculatedCombinedCRC != s->storedCombinedCRC)
               return BZ_DATA_ERROR;
            return r;
         }
         if (s->state != BZ_X_OUTPUT) return r;
      }
   }

   AssertH ( 0, 6001 );

   return 0;  /*NOTREACHED*/
}

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Definition at line 906 of file bzlib.c.

{
   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;

   if (s->tt   != NULL) BZFREE(s->tt);
   if (s->ll16 != NULL) BZFREE(s->ll16);
   if (s->ll4  != NULL) BZFREE(s->ll4);

   BZFREE(strm->state);
   strm->state = NULL;

   return BZ_OK;
}

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int BZ_API() BZ2_bzDecompressInit ( bz_stream strm,
int  verbosity,
int  small 
)

Definition at line 538 of file bzlib.c.

{
   DState* s;

   if (!bz_config_ok()) return BZ_CONFIG_ERROR;

   if (strm == NULL) return BZ_PARAM_ERROR;
   if (small != 0 && small != 1) return BZ_PARAM_ERROR;
   if (verbosity < 0 || verbosity > 4) return BZ_PARAM_ERROR;

   if (strm->bzalloc == NULL) strm->bzalloc = default_bzalloc;
   if (strm->bzfree == NULL) strm->bzfree = default_bzfree;

   s = BZALLOC( sizeof(DState) );
   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       = (Bool)small;
   s->ll4                   = NULL;
   s->ll16                  = NULL;
   s->tt                    = NULL;
   s->currBlockNo           = 0;
   s->verbosity             = verbosity;

   return BZ_OK;
}

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BZFILE* BZ_API() BZ2_bzdopen ( int  fd,
const char *  mode 
)

Definition at line 1515 of file bzlib.c.

{
   return bzopen_or_bzdopen(NULL,fd,mode,/*bzdopen*/1);
}

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const char* BZ_API() BZ2_bzerror ( BZFILE b,
int errnum 
)

Definition at line 1603 of file bzlib.c.

{
   int err = ((bzFile *)b)->lastErr;

   if(err>0) err = 0;
   *errnum = err;
   return bzerrorstrings[err*-1];
}

Definition at line 1551 of file bzlib.c.

{
   /* do nothing now... */
   return 0;
}

Definition at line 1411 of file bzlib.c.

{
   return BZ_VERSION;
}

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BZFILE* BZ_API() BZ2_bzopen ( const char *  path,
const char *  mode 
)

Definition at line 1506 of file bzlib.c.

{
   return bzopen_or_bzdopen(path,-1,mode,/*bzopen*/0);
}

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int BZ_API() BZ2_bzRead ( int bzerror,
BZFILE b,
void buf,
int  len 
)

Definition at line 1206 of file bzlib.c.

{
   Int32   n, ret;
   bzFile* bzf = (bzFile*)b;

   BZ_SETERR(BZ_OK);

   if (bzf == NULL || buf == NULL || len < 0)
      { BZ_SETERR(BZ_PARAM_ERROR); return 0; };

   if (bzf->writing)
      { BZ_SETERR(BZ_SEQUENCE_ERROR); return 0; };

   if (len == 0)
      { BZ_SETERR(BZ_OK); return 0; };

   bzf->strm.avail_out = len;
   bzf->strm.next_out = buf;

   while (True) {

      if (ferror(bzf->handle)) 
         { BZ_SETERR(BZ_IO_ERROR); return 0; };

      if (bzf->strm.avail_in == 0 && !myfeof(bzf->handle)) {
         n = fread ( bzf->buf, sizeof(UChar), 
                     BZ_MAX_UNUSED, bzf->handle );
         if (ferror(bzf->handle))
            { BZ_SETERR(BZ_IO_ERROR); 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); return 0; };

      if (ret == BZ_OK && myfeof(bzf->handle) && 
          bzf->strm.avail_in == 0 && bzf->strm.avail_out > 0)
         { BZ_SETERR(BZ_UNEXPECTED_EOF); return 0; };

      if (ret == BZ_STREAM_END)
         { BZ_SETERR(BZ_STREAM_END);
           return len - bzf->strm.avail_out; };
      if (bzf->strm.avail_out == 0)
         { BZ_SETERR(BZ_OK); return len; };
      
   }

   return 0; /*not reached*/
}

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int BZ_API() BZ2_bzread ( BZFILE b,
void buf,
int  len 
)

Definition at line 1523 of file bzlib.c.

{
   int bzerr, nread;
   if (((bzFile*)b)->lastErr == BZ_STREAM_END) return 0;
   nread = BZ2_bzRead(&bzerr,b,buf,len);
   if (bzerr == BZ_OK || bzerr == BZ_STREAM_END) {
      return nread;
   } else {
      return -1;
   }
}

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void BZ_API() BZ2_bzReadClose ( int bzerror,
BZFILE b 
)

Definition at line 1187 of file bzlib.c.

{
   bzFile* bzf = (bzFile*)b;

   BZ_SETERR(BZ_OK);
   if (bzf == NULL)
      { BZ_SETERR(BZ_OK); return; };

   if (bzf->writing)
      { BZ_SETERR(BZ_SEQUENCE_ERROR); return; };

   if (bzf->initialisedOk)
      (void)BZ2_bzDecompressEnd ( &(bzf->strm) );
   free ( bzf );
}

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void BZ_API() BZ2_bzReadGetUnused ( int bzerror,
BZFILE b,
void **  unused,
int nUnused 
)

Definition at line 1266 of file bzlib.c.

{
   bzFile* bzf = (bzFile*)b;
   if (bzf == NULL)
      { BZ_SETERR(BZ_PARAM_ERROR); return; };
   if (bzf->lastErr != BZ_STREAM_END)
      { BZ_SETERR(BZ_SEQUENCE_ERROR); return; };
   if (unused == NULL || nUnused == NULL)
      { BZ_SETERR(BZ_PARAM_ERROR); return; };

   BZ_SETERR(BZ_OK);
   *nUnused = bzf->strm.avail_in;
   *unused = bzf->strm.next_in;
}
BZFILE* BZ_API() BZ2_bzReadOpen ( int bzerror,
FILE f,
int  verbosity,
int  small,
void unused,
int  nUnused 
)

Definition at line 1132 of file bzlib.c.

{
   bzFile* bzf = NULL;
   int     ret;

   BZ_SETERR(BZ_OK);

   if (f == NULL || 
       (small != 0 && small != 1) ||
       (verbosity < 0 || verbosity > 4) ||
       (unused == NULL && nUnused != 0) ||
       (unused != NULL && (nUnused < 0 || nUnused > BZ_MAX_UNUSED)))
      { BZ_SETERR(BZ_PARAM_ERROR); return NULL; };

   if (ferror(f))
      { BZ_SETERR(BZ_IO_ERROR); return NULL; };

   bzf = malloc ( sizeof(bzFile) );
   if (bzf == NULL) 
      { BZ_SETERR(BZ_MEM_ERROR); return NULL; };

   BZ_SETERR(BZ_OK);

   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] = *((UChar*)(unused)); bzf->bufN++;
      unused = ((void*)( 1 + ((UChar*)(unused))  ));
      nUnused--;
   }

   ret = BZ2_bzDecompressInit ( &(bzf->strm), verbosity, small );
   if (ret != BZ_OK)
      { BZ_SETERR(ret); free(bzf); return NULL; };

   bzf->strm.avail_in = bzf->bufN;
   bzf->strm.next_in  = bzf->buf;

   bzf->initialisedOk = True;
   return bzf;   
}

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void BZ_API() BZ2_bzWrite ( int bzerror,
BZFILE b,
void buf,
int  len 
)

Definition at line 1009 of file bzlib.c.

{
   Int32 n, n2, ret;
   bzFile* bzf = (bzFile*)b;

   BZ_SETERR(BZ_OK);
   if (bzf == NULL || buf == NULL || len < 0)
      { BZ_SETERR(BZ_PARAM_ERROR); return; };
   if (!(bzf->writing))
      { BZ_SETERR(BZ_SEQUENCE_ERROR); return; };
   if (ferror(bzf->handle))
      { BZ_SETERR(BZ_IO_ERROR); return; };

   if (len == 0)
      { BZ_SETERR(BZ_OK); return; };

   bzf->strm.avail_in = len;
   bzf->strm.next_in  = buf;

   while (True) {
      bzf->strm.avail_out = BZ_MAX_UNUSED;
      bzf->strm.next_out = bzf->buf;
      ret = BZ2_bzCompress ( &(bzf->strm), BZ_RUN );
      if (ret != BZ_RUN_OK)
         { BZ_SETERR(ret); return; };

      if (bzf->strm.avail_out < BZ_MAX_UNUSED) {
         n = BZ_MAX_UNUSED - bzf->strm.avail_out;
         n2 = fwrite ( (void*)(bzf->buf), sizeof(UChar), 
                       n, bzf->handle );
         if (n != n2 || ferror(bzf->handle))
            { BZ_SETERR(BZ_IO_ERROR); return; };
      }

      if (bzf->strm.avail_in == 0)
         { BZ_SETERR(BZ_OK); return; };
   }
}

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int BZ_API() BZ2_bzwrite ( BZFILE b,
void buf,
int  len 
)

Definition at line 1537 of file bzlib.c.

{
   int bzerr;

   BZ2_bzWrite(&bzerr,b,buf,len);
   if(bzerr == BZ_OK){
      return len;
   }else{
      return -1;
   }
}

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void BZ_API() BZ2_bzWriteClose ( int bzerror,
BZFILE b,
int  abandon,
unsigned int nbytes_in,
unsigned int nbytes_out 
)

Definition at line 1054 of file bzlib.c.

{
   BZ2_bzWriteClose64 ( bzerror, b, abandon, 
                        nbytes_in, NULL, nbytes_out, NULL );
}

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void BZ_API() BZ2_bzWriteClose64 ( int bzerror,
BZFILE b,
int  abandon,
unsigned int nbytes_in_lo32,
unsigned int nbytes_in_hi32,
unsigned int nbytes_out_lo32,
unsigned int nbytes_out_hi32 
)

Definition at line 1066 of file bzlib.c.

{
   Int32   n, n2, ret;
   bzFile* bzf = (bzFile*)b;

   if (bzf == NULL)
      { BZ_SETERR(BZ_OK); return; };
   if (!(bzf->writing))
      { BZ_SETERR(BZ_SEQUENCE_ERROR); return; };
   if (ferror(bzf->handle))
      { BZ_SETERR(BZ_IO_ERROR); return; };

   if (nbytes_in_lo32 != NULL) *nbytes_in_lo32 = 0;
   if (nbytes_in_hi32 != NULL) *nbytes_in_hi32 = 0;
   if (nbytes_out_lo32 != NULL) *nbytes_out_lo32 = 0;
   if (nbytes_out_hi32 != NULL) *nbytes_out_hi32 = 0;

   if ((!abandon) && bzf->lastErr == BZ_OK) {
      while (True) {
         bzf->strm.avail_out = BZ_MAX_UNUSED;
         bzf->strm.next_out = bzf->buf;
         ret = BZ2_bzCompress ( &(bzf->strm), BZ_FINISH );
         if (ret != BZ_FINISH_OK && ret != BZ_STREAM_END)
            { BZ_SETERR(ret); return; };

         if (bzf->strm.avail_out < BZ_MAX_UNUSED) {
            n = BZ_MAX_UNUSED - bzf->strm.avail_out;
            n2 = fwrite ( (void*)(bzf->buf), sizeof(UChar), 
                          n, bzf->handle );
            if (n != n2 || ferror(bzf->handle))
               { BZ_SETERR(BZ_IO_ERROR); return; };
         }

         if (ret == BZ_STREAM_END) break;
      }
   }

   if ( !abandon && !ferror ( bzf->handle ) ) {
      fflush ( bzf->handle );
      if (ferror(bzf->handle))
         { BZ_SETERR(BZ_IO_ERROR); return; };
   }

   if (nbytes_in_lo32 != NULL)
      *nbytes_in_lo32 = bzf->strm.total_in_lo32;
   if (nbytes_in_hi32 != NULL)
      *nbytes_in_hi32 = bzf->strm.total_in_hi32;
   if (nbytes_out_lo32 != NULL)
      *nbytes_out_lo32 = bzf->strm.total_out_lo32;
   if (nbytes_out_hi32 != NULL)
      *nbytes_out_hi32 = bzf->strm.total_out_hi32;

   BZ_SETERR(BZ_OK);
   BZ2_bzCompressEnd ( &(bzf->strm) );
   free ( bzf );
}

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BZFILE* BZ_API() BZ2_bzWriteOpen ( int bzerror,
FILE f,
int  blockSize100k,
int  verbosity,
int  workFactor 
)

Definition at line 961 of file bzlib.c.

{
   Int32   ret;
   bzFile* bzf = NULL;

   BZ_SETERR(BZ_OK);

   if (f == NULL ||
       (blockSize100k < 1 || blockSize100k > 9) ||
       (workFactor < 0 || workFactor > 250) ||
       (verbosity < 0 || verbosity > 4))
      { BZ_SETERR(BZ_PARAM_ERROR); return NULL; };

   if (ferror(f))
      { BZ_SETERR(BZ_IO_ERROR); return NULL; };

   bzf = malloc ( sizeof(bzFile) );
   if (bzf == NULL)
      { BZ_SETERR(BZ_MEM_ERROR); return NULL; };

   BZ_SETERR(BZ_OK);
   bzf->initialisedOk = False;
   bzf->bufN          = 0;
   bzf->handle        = f;
   bzf->writing       = True;
   bzf->strm.bzalloc  = NULL;
   bzf->strm.bzfree   = NULL;
   bzf->strm.opaque   = NULL;

   if (workFactor == 0) workFactor = 30;
   ret = BZ2_bzCompressInit ( &(bzf->strm), blockSize100k, 
                              verbosity, workFactor );
   if (ret != BZ_OK)
      { BZ_SETERR(ret); free(bzf); return NULL; };

   bzf->strm.avail_in = 0;
   bzf->initialisedOk = True;
   return bzf;   
}

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__inline__ Int32 BZ2_indexIntoF ( Int32  indx,
Int32 cftab 
)

Definition at line 731 of file bzlib.c.

{
   Int32 nb, na, mid;
   nb = 0;
   na = 256;
   do {
      mid = (nb + na) >> 1;
      if (indx >= cftab[mid]) nb = mid; else na = mid;
   }
   while (na - nb != 1);
   return nb;
}
static int bz_config_ok ( void  ) [static]

Definition at line 136 of file bzlib.c.

{
   if (sizeof(int)   != 4) return 0;
   if (sizeof(short) != 2) return 0;
   if (sizeof(char)  != 1) return 0;
   return 1;
}

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static BZFILE* bzopen_or_bzdopen ( const char *  path,
int  fd,
const char *  mode,
int  open_mode 
) [static]

Definition at line 1429 of file bzlib.c.

{
   int    bzerr;
   char   unused[BZ_MAX_UNUSED];
   int    blockSize100k = 9;
   int    writing       = 0;
   char   mode2[10]     = "";
   FILE   *fp           = NULL;
   BZFILE *bzfp         = NULL;
   int    verbosity     = 0;
   int    workFactor    = 30;
   int    smallMode     = 0;
   int    nUnused       = 0; 

   if (mode == NULL) return NULL;
   while (*mode) {
      switch (*mode) {
      case 'r':
         writing = 0; break;
      case 'w':
         writing = 1; break;
      case 's':
         smallMode = 1; break;
      default:
         if (isdigit((int)(*mode))) {
            blockSize100k = *mode-BZ_HDR_0;
         }
      }
      mode++;
   }
   strcat(mode2, writing ? "w" : "r" );
   strcat(mode2,"b");   /* binary mode */

   if (open_mode==0) {
      if (path==NULL || strcmp(path,"")==0) {
        fp = (writing ? stdout : stdin);
        SET_BINARY_MODE(fp);
      } else {
        fp = fopen(path,mode2);
      }
   } else {
#ifdef BZ_STRICT_ANSI
      fp = NULL;
#else
      fp = fdopen(fd,mode2);
#endif
   }
   if (fp == NULL) return NULL;

   if (writing) {
      /* Guard against total chaos and anarchy -- JRS */
      if (blockSize100k < 1) blockSize100k = 1;
      if (blockSize100k > 9) blockSize100k = 9; 
      bzfp = BZ2_bzWriteOpen(&bzerr,fp,blockSize100k,
                             verbosity,workFactor);
   } else {
      bzfp = BZ2_bzReadOpen(&bzerr,fp,verbosity,smallMode,
                            unused,nUnused);
   }
   if (bzfp == NULL) {
      if (fp != stdin && fp != stdout) fclose(fp);
      return NULL;
   }
   return bzfp;
}

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static Bool copy_input_until_stop ( EState s) [static]

Definition at line 334 of file bzlib.c.

{
   Bool progress_in = False;

   if (s->mode == BZ_M_RUNNING) {

      /*-- fast track the common case --*/
      while (True) {
         /*-- block full? --*/
         if (s->nblock >= s->nblockMAX) break;
         /*-- no input? --*/
         if (s->strm->avail_in == 0) break;
         progress_in = True;
         ADD_CHAR_TO_BLOCK ( s, (UInt32)(*((UChar*)(s->strm->next_in))) ); 
         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++;
      }

   } else {

      /*-- general, uncommon case --*/
      while (True) {
         /*-- block full? --*/
         if (s->nblock >= s->nblockMAX) break;
         /*-- no input? --*/
         if (s->strm->avail_in == 0) break;
         /*-- flush/finish end? --*/
         if (s->avail_in_expect == 0) break;
         progress_in = True;
         ADD_CHAR_TO_BLOCK ( s, (UInt32)(*((UChar*)(s->strm->next_in))) ); 
         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++;
         s->avail_in_expect--;
      }
   }
   return progress_in;
}

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static Bool copy_output_until_stop ( EState s) [static]

Definition at line 379 of file bzlib.c.

{
   Bool progress_out = False;

   while (True) {

      /*-- no output space? --*/
      if (s->strm->avail_out == 0) break;

      /*-- block done? --*/
      if (s->state_out_pos >= s->numZ) break;

      progress_out = True;
      *(s->strm->next_out) = s->zbits[s->state_out_pos];
      s->state_out_pos++;
      s->strm->avail_out--;
      s->strm->next_out++;
      s->strm->total_out_lo32++;
      if (s->strm->total_out_lo32 == 0) s->strm->total_out_hi32++;
   }

   return progress_out;
}

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static void* default_bzalloc ( void opaque,
Int32  items,
Int32  size 
) [static]

Definition at line 147 of file bzlib.c.

{
   void* v = malloc ( items * size );
   return v;
}

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static void default_bzfree ( void opaque,
void addr 
) [static]

Definition at line 154 of file bzlib.c.

{
   if (addr != NULL) free ( addr );
}

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static void flush_RL ( EState s) [static]

Definition at line 297 of file bzlib.c.

{
   if (s->state_in_ch < 256) add_pair_to_block ( s );
   init_RL ( s );
}

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static Bool handle_compress ( bz_stream strm) [static]

Definition at line 406 of file bzlib.c.

{
   Bool progress_in  = False;
   Bool progress_out = False;
   EState* s = strm->state;
   
   while (True) {

      if (s->state == BZ_S_OUTPUT) {
         progress_out |= copy_output_until_stop ( s );
         if (s->state_out_pos < s->numZ) break;
         if (s->mode == BZ_M_FINISHING && 
             s->avail_in_expect == 0 &&
             isempty_RL(s)) break;
         prepare_new_block ( s );
         s->state = BZ_S_INPUT;
         if (s->mode == BZ_M_FLUSHING && 
             s->avail_in_expect == 0 &&
             isempty_RL(s)) break;
      }

      if (s->state == BZ_S_INPUT) {
         progress_in |= copy_input_until_stop ( s );
         if (s->mode != BZ_M_RUNNING && s->avail_in_expect == 0) {
            flush_RL ( s );
            BZ2_compressBlock ( s, (Bool)(s->mode == BZ_M_FINISHING) );
            s->state = BZ_S_OUTPUT;
         }
         else
         if (s->nblock >= s->nblockMAX) {
            BZ2_compressBlock ( s, False );
            s->state = BZ_S_OUTPUT;
         }
         else
         if (s->strm->avail_in == 0) {
            break;
         }
      }

   }

   return progress_in || progress_out;
}

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static void init_RL ( EState s) [static]

Definition at line 176 of file bzlib.c.

{
   s->state_in_ch  = 256;
   s->state_in_len = 0;
}

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static Bool isempty_RL ( EState s) [static]

Definition at line 184 of file bzlib.c.

{
   if (s->state_in_ch < 256 && s->state_in_len > 0)
      return False; else
      return True;
}

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static Bool myfeof ( FILE f) [static]

Definition at line 950 of file bzlib.c.

{
   Int32 c = fgetc ( f );
   if (c == EOF) return True;
   ungetc ( c, f );
   return False;
}

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static void prepare_new_block ( EState s) [static]

Definition at line 162 of file bzlib.c.

{
   Int32 i;
   s->nblock = 0;
   s->numZ = 0;
   s->state_out_pos = 0;
   BZ_INITIALISE_CRC ( s->blockCRC );
   for (i = 0; i < 256; i++) s->inUse[i] = False;
   s->blockNo++;
}

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static Bool unRLE_obuf_to_output_FAST ( DState s) [static]

Definition at line 581 of file bzlib.c.

{
   UChar k1;

   if (s->blockRandomised) {

      while (True) {
         /* try to finish existing run */
         while (True) {
            if (s->strm->avail_out == 0) return False;
            if (s->state_out_len == 0) break;
            *( (UChar*)(s->strm->next_out) ) = s->state_out_ch;
            BZ_UPDATE_CRC ( s->calculatedBlockCRC, 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 False;
               
         /* Only caused by corrupt data stream? */
         if (s->nblock_used > s->save_nblock+1)
            return True;
   
         s->state_out_len = 1;
         s->state_out_ch = s->k0;
         BZ_GET_FAST(k1); BZ_RAND_UPD_MASK; 
         k1 ^= BZ_RAND_MASK; 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;
         BZ_GET_FAST(k1); BZ_RAND_UPD_MASK; 
         k1 ^= BZ_RAND_MASK; 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;
         BZ_GET_FAST(k1); BZ_RAND_UPD_MASK; 
         k1 ^= BZ_RAND_MASK; s->nblock_used++;
         if (s->nblock_used == s->save_nblock+1) continue;
         if (k1 != s->k0) { s->k0 = k1; continue; };
   
         BZ_GET_FAST(k1); BZ_RAND_UPD_MASK; 
         k1 ^= BZ_RAND_MASK; s->nblock_used++;
         s->state_out_len = ((Int32)k1) + 4;
         BZ_GET_FAST(s->k0); BZ_RAND_UPD_MASK; 
         s->k0 ^= BZ_RAND_MASK; s->nblock_used++;
      }

   } else {

      /* restore */
      UInt32        c_calculatedBlockCRC = s->calculatedBlockCRC;
      UChar         c_state_out_ch       = s->state_out_ch;
      Int32         c_state_out_len      = s->state_out_len;
      Int32         c_nblock_used        = s->nblock_used;
      Int32         c_k0                 = s->k0;
      UInt32*       c_tt                 = s->tt;
      UInt32        c_tPos               = s->tPos;
      char*         cs_next_out          = s->strm->next_out;
      unsigned int  cs_avail_out         = s->strm->avail_out;
      /* end restore */

      UInt32       avail_out_INIT = cs_avail_out;
      Int32        s_save_nblockPP = s->save_nblock+1;
      unsigned int total_out_lo32_old;

      while (True) {

         /* 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;
               *( (UChar*)(cs_next_out) ) = c_state_out_ch;
               BZ_UPDATE_CRC ( c_calculatedBlockCRC, 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;
               };
               *( (UChar*)(cs_next_out) ) = c_state_out_ch;
               BZ_UPDATE_CRC ( c_calculatedBlockCRC, c_state_out_ch );
               cs_next_out++;
               cs_avail_out--;
            }
         }   
         /* Only caused by corrupt data stream? */
         if (c_nblock_used > s_save_nblockPP)
            return True;

         /* 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;
         BZ_GET_FAST_C(k1); 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;
         BZ_GET_FAST_C(k1); c_nblock_used++;
         if (c_nblock_used == s_save_nblockPP) continue;
         if (k1 != c_k0) { c_k0 = k1; continue; };
   
         c_state_out_len = 3;
         BZ_GET_FAST_C(k1); c_nblock_used++;
         if (c_nblock_used == s_save_nblockPP) continue;
         if (k1 != c_k0) { c_k0 = k1; continue; };
   
         BZ_GET_FAST_C(k1); c_nblock_used++;
         c_state_out_len = ((Int32)k1) + 4;
         BZ_GET_FAST_C(c_k0); 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 */
   }
   return False;
}

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static Bool unRLE_obuf_to_output_SMALL ( DState s) [static]

Definition at line 750 of file bzlib.c.

{
   UChar k1;

   if (s->blockRandomised) {

      while (True) {
         /* try to finish existing run */
         while (True) {
            if (s->strm->avail_out == 0) return False;
            if (s->state_out_len == 0) break;
            *( (UChar*)(s->strm->next_out) ) = s->state_out_ch;
            BZ_UPDATE_CRC ( s->calculatedBlockCRC, 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 False;

         /* Only caused by corrupt data stream? */
         if (s->nblock_used > s->save_nblock+1)
            return True;
   
         s->state_out_len = 1;
         s->state_out_ch = s->k0;
         BZ_GET_SMALL(k1); BZ_RAND_UPD_MASK; 
         k1 ^= BZ_RAND_MASK; 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;
         BZ_GET_SMALL(k1); BZ_RAND_UPD_MASK; 
         k1 ^= BZ_RAND_MASK; 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;
         BZ_GET_SMALL(k1); BZ_RAND_UPD_MASK; 
         k1 ^= BZ_RAND_MASK; s->nblock_used++;
         if (s->nblock_used == s->save_nblock+1) continue;
         if (k1 != s->k0) { s->k0 = k1; continue; };
   
         BZ_GET_SMALL(k1); BZ_RAND_UPD_MASK; 
         k1 ^= BZ_RAND_MASK; s->nblock_used++;
         s->state_out_len = ((Int32)k1) + 4;
         BZ_GET_SMALL(s->k0); BZ_RAND_UPD_MASK; 
         s->k0 ^= BZ_RAND_MASK; s->nblock_used++;
      }

   } else {

      while (True) {
         /* try to finish existing run */
         while (True) {
            if (s->strm->avail_out == 0) return False;
            if (s->state_out_len == 0) break;
            *( (UChar*)(s->strm->next_out) ) = s->state_out_ch;
            BZ_UPDATE_CRC ( s->calculatedBlockCRC, 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 False;

         /* Only caused by corrupt data stream? */
         if (s->nblock_used > s->save_nblock+1)
            return True;
   
         s->state_out_len = 1;
         s->state_out_ch = s->k0;
         BZ_GET_SMALL(k1); 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;
         BZ_GET_SMALL(k1); 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;
         BZ_GET_SMALL(k1); s->nblock_used++;
         if (s->nblock_used == s->save_nblock+1) continue;
         if (k1 != s->k0) { s->k0 = k1; continue; };
   
         BZ_GET_SMALL(k1); s->nblock_used++;
         s->state_out_len = ((Int32)k1) + 4;
         BZ_GET_SMALL(s->k0); s->nblock_used++;
      }

   }
}

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Variable Documentation

char* bzerrorstrings[] [static]
Initial value:
 {
       "OK"
      ,"SEQUENCE_ERROR"
      ,"PARAM_ERROR"
      ,"MEM_ERROR"
      ,"DATA_ERROR"
      ,"DATA_ERROR_MAGIC"
      ,"IO_ERROR"
      ,"UNEXPECTED_EOF"
      ,"OUTBUFF_FULL"
      ,"CONFIG_ERROR"
      ,"???"   
      ,"???"   
      ,"???"   
      ,"???"   
      ,"???"   
      ,"???"   
}

Definition at line 1583 of file bzlib.c.