csz_inflate.cc File Reference

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

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Classes
struct	huft

Macros
#define	WSIZE   0x8000 /* window size--must be a power of two, and at least */
#define	NEXTBYTE   csz__ReadByte()
#define	FPRINTF   fprintf
#define	FLUSH(n)   csz__WriteData(n) /* return value not used */
#define	Trace(x)
#define	CHECK_EOF
#define	NEEDBITS(n)   {while(k<(n)){if(ibufcnt-- <= 0)return 1;b|=((ulg) *ibufptr++)<<k;k+=8;}}
#define	DUMPBITS(n)   {b>>=(n);k-=(n);}
#define	BMAX   16 /* maximum bit length of any code (16 for explode) */
#define	N_MAX   288 /* maximum number of codes in any set */
#define	NEEDBITS_free_tl(n)   {while(k<(n)){if(ibufcnt-- <= 0){csz__huft_free(tl);return 1;} b|=((ulg) *ibufptr++)<<k;k+=8;}}

Typedefs
typedef char	boolean
typedef unsigned char	uch
typedef unsigned short	ush
typedef unsigned long	ulg

Functions
int	csz__huft_build (unsigned *, unsigned, unsigned, ush *, ush *, struct huft **, int *)
int	csz__huft_free (struct huft *)
int	csz__Inflate_codes (struct huft *, struct huft *, int, int)
int	csz__Inflate_stored (void)
int	csz__Inflate_fixed (void)
int	csz__Inflate_dynamic (void)
int	csz__Inflate_block (int *)
int	csz__Inflate (void)
int	csz__Inflate_free (void)
static void	csz__WriteData (int)
void	csz__Init_Inflate (long a_ibufcnt, unsigned char *a_ibufptr, long a_obufcnt, unsigned char *a_obufptr)
unsigned char *	csz__obufptr ()

Variables
static uch	csz__slide [32768]
static unsigned	wp
static unsigned	border []
static ush	cplens []
static ush	cplext []
static ush	cpdist []
static ush	cpdext []
static ush	mask []
static ulg	bb
static unsigned	bk
static uch *	ibufptr
static uch *	obufptr
static long	ibufcnt
static long	obufcnt
static int	lbits = 9
static int	dbits = 6
static unsigned	hufts
struct huft *	csz__fixed_tl = (struct huft *)NULL
struct huft *	csz__fixed_td
int	csz__fixed_bl
int	csz__fixed_bd

Macro Definition Documentation

#define BMAX   16 /* maximum bit length of any code (16 for explode) */

Definition at line 403 of file csz_inflate.cc.

#define CHECK_EOF

Definition at line 349 of file csz_inflate.cc.

#define DUMPBITS

(

n

)

{b>>=(n);k-=(n);}

Definition at line 362 of file csz_inflate.cc.

#define FLUSH

(

n

)

csz__WriteData(n) /* return value not used */

Definition at line 226 of file csz_inflate.cc.

#define FPRINTF   fprintf

Definition at line 222 of file csz_inflate.cc.

#define N_MAX   288 /* maximum number of codes in any set */

Definition at line 404 of file csz_inflate.cc.

#define NEEDBITS

(

n

)

{while(k<(n)){if(ibufcnt-- <= 0)return 1;b|=((ulg) *ibufptr++)<<k;k+=8;}}

Definition at line 359 of file csz_inflate.cc.

#define NEEDBITS_free_tl

(

n

)

{while(k<(n)){if(ibufcnt-- <= 0){csz__huft_free(tl);return 1;} b|=((ulg) *ibufptr++)<<k;k+=8;}}

#define NEXTBYTE   csz__ReadByte()

Definition at line 218 of file csz_inflate.cc.

#define Trace

(

x

)

Definition at line 235 of file csz_inflate.cc.

#define WSIZE   0x8000 /* window size--must be a power of two, and at least */

Definition at line 214 of file csz_inflate.cc.

Typedef Documentation

typedef char boolean

Definition at line 208 of file csz_inflate.cc.

typedef unsigned char uch

Definition at line 209 of file csz_inflate.cc.

typedef unsigned long ulg

Definition at line 211 of file csz_inflate.cc.

typedef unsigned short ush

Definition at line 210 of file csz_inflate.cc.

Function Documentation

int csz__huft_build	(	unsigned *	b,
		unsigned	n,
		unsigned	s,
		ush *	d,
		ush *	e,
		struct huft **	t,
		int *	m
	)

Definition at line 410 of file csz_inflate.cc.

{
  unsigned a;                   /* counter for codes of length k */
  unsigned c[BMAX+1];           /* bit length count table */
  unsigned el;                  /* length of EOB code (value 256) */
  unsigned f;                   /* i repeats in table every f entries */
  int g;                        /* maximum code length */
  int h;                        /* table level */
  /*G.Barrand : comment out register keyword.*/
  /*register*/ unsigned i;          /* counter, current code */
  /*register*/ unsigned j;          /* counter */
  /*register*/ int k;               /* number of bits in current code */
  int lx[BMAX+1];               /* memory for l[-1..BMAX-1] */
  int *l = lx+1;                /* stack of bits per table */
  /*register*/ unsigned *p;         /* pointer into c[], b[], or v[] */
  /*register*/ struct huft *q;      /* points to current table */
  struct huft r;                /* table entry for structure assignment */
  struct huft *u[BMAX];         /* table stack */
  static unsigned v[N_MAX];     /* values in order of bit length */
  /*register*/ int w;               /* bits before this table == (l * h) */
  unsigned x[BMAX+1];           /* bit offsets, then code stack */
  unsigned *xp;                 /* pointer into x */
  int y;                        /* number of dummy codes added */
  unsigned z;                   /* number of entries in current table */


  /* Generate counts for each bit length */
  el = n > 256 ? b[256] : BMAX; /* set length of EOB code, if any */
  memset((char *)c,0,sizeof(c));
  p = b;  i = n;
  do {
    c[*p]++; p++;               /* assume all entries <= BMAX */
  } while (--i);
  if (c[0] == n)                /* null input--all zero length codes */
  {
    *t = (struct huft *)NULL;
    *m = 0;
    return 0;
  }


  /* Find minimum and maximum length, bound *m by those */
  for (j = 1; j <= BMAX; j++)
    if (c[j])
      break;
  k = j;                        /* minimum code length */
  if ((unsigned)*m < j)
    *m = j;
  for (i = BMAX; i; i--)
    if (c[i])
      break;
  g = i;                        /* maximum code length */
  if ((unsigned)*m > i)
    *m = i;


  /* Adjust last length count to fill out codes, if needed */
  for (y = 1 << j; j < i; j++, y <<= 1)
    if ((y -= c[j]) < 0)
      return 2;                 /* bad input: more codes than bits */
  if ((y -= c[i]) < 0)
    return 2;
  c[i] += y;


  /* Generate starting offsets into the value table for each length */
  x[1] = j = 0;
  p = c + 1;  xp = x + 2;
  while (--i) {                 /* note that i == g from above */
    *xp++ = (j += *p++);
  }


  /* Make a table of values in order of bit lengths */
  p = b;  i = 0;
  do {
    if ((j = *p++) != 0)
      v[x[j]++] = i;
  } while (++i < n);


  /* Generate the Huffman codes and for each, make the table entries */
  x[0] = i = 0;                 /* first Huffman code is zero */
  p = v;                        /* grab values in bit order */
  h = -1;                       /* no tables yet--level -1 */
  w = l[-1] = 0;                /* no bits decoded yet */
  u[0] = (struct huft *)NULL;   /* just to keep compilers happy */
  q = (struct huft *)NULL;      /* ditto */
  z = 0;                        /* ditto */

  /* go through the bit lengths (k already is bits in shortest code) */
  for (; k <= g; k++)
  {
    a = c[k];
    while (a--)
    {
      /* here i is the Huffman code of length k bits for value *p */
      /* make tables up to required level */
      while (k > w + l[h])
      {
        w += l[h++];            /* add bits already decoded */

        /* compute minimum size table less than or equal to *m bits */
        z = (z = g - w) > (unsigned)*m ? (unsigned) *m : z;   /* upper limit */
        if ((f = 1 << (j = k - w)) > a + 1)     /* try a k-w bit table */
        {                       /* too few codes for k-w bit table */
          f -= a + 1;           /* deduct codes from patterns left */
          xp = c + k;
          while (++j < z)       /* try smaller tables up to z bits */
          {
            if ((f <<= 1) <= *++xp)
              break;            /* enough codes to use up j bits */
            f -= *xp;           /* else deduct codes from patterns */
          }
        }
        if ((unsigned)w + j > el && (unsigned)w < el)
          j = el - w;           /* make EOB code end at table */
        z = 1 << j;             /* table entries for j-bit table */
        l[h] = j;               /* set table size in stack */

        /* allocate and link in new table */
        if ((q = (struct huft *)malloc((z + 1)*sizeof(struct huft))) ==
            (struct huft *)NULL)
        {
          if (h)
            csz__huft_free(u[0]);
          return 3;             /* not enough memory */
        }
        hufts += z + 1;         /* track memory usage */
        *t = q + 1;             /* link to list for huft_free() */
        *(t = &(q->v.t)) = (struct huft *)NULL;
        u[h] = ++q;             /* table starts after link */

        /* connect to last table, if there is one */
        if (h)
        {
          x[h] = i;             /* save pattern for backing up */
          r.b = (uch)l[h-1];    /* bits to dump before this table */
          r.e = (uch)(16 + j);  /* bits in this table */
          r.v.t = q;            /* pointer to this table */
          j = (i & ((1 << w) - 1)) >> (w - l[h-1]);
          u[h-1][j] = r;        /* connect to last table */
        }
      }

      /* set up table entry in r */
      r.b = (uch)(k - w);
      if (p >= v + n)
        r.e = 99;               /* out of values--invalid code */
      else if (*p < s) {
        r.e = (uch)(*p < 256 ? 16 : 15);    /* 256 is end-of-block code */
        r.v.n = *p++;           /* simple code is just the value */
      } else if(e && d) {
        r.e = (uch)e[*p - s];   /* non-simple--look up in lists */
        r.v.n = d[*p++ - s];
      } else return 1;

      /* fill code-like entries with r */
      f = 1 << (k - w);
      for (j = i >> w; j < z; j += f)
        q[j] = r;

      /* backwards increment the k-bit code i */
      for (j = 1 << (k - 1); i & j; j >>= 1)
        i ^= j;
      i ^= j;

      /* backup over finished tables */
      while ((i & ((1 << w) - 1)) != x[h])
        w -= l[--h];            /* don't need to update q */
    }
  }


  /* return actual size of base table */
  *m = l[0];


  /* Return true (1) if we were given an incomplete table */
  return y != 0 && g != 1;
}

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int csz__huft_free

(

struct huft *

t

)

Definition at line 609 of file csz_inflate.cc.

{
  /*register*/ struct huft *p, *q;


  /* Go through linked list, freeing from the malloced (t[-1]) address. */
  p = t;
  while (p != (struct huft *)NULL)
  {
    q = (--p)->v.t;
    free(p);
    p = q;
  }
  return 0;
}

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int csz__Inflate

(

void

)

Definition at line 1076 of file csz_inflate.cc.

{
  int e;                /* last block flag */
  int r;                /* result code */
  unsigned h;           /* maximum struct huft's malloc'ed */


  /* initialize window, bit buffer */
  wp = 0;
  bk = 0;
  bb = 0;


  /* decompress until the last block */
  h = 0;
  do {
    hufts = 0;
    if ((r = csz__Inflate_block(&e)) != 0)
      return r;
    if (hufts > h)
      h = hufts;
  } while (!e);


  /* flush out slide */
  FLUSH(wp);


  /* return success */
  Trace((stderr, "\n%lu bytes in Huffman tables (%lu/entry)\n",
         h * sizeof(struct huft), sizeof(struct huft)));
  return 0;
}

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int csz__Inflate_block

(

int *

e

)

Definition at line 1028 of file csz_inflate.cc.

{
  unsigned t;           /* block type */
  /*register*/ ulg b;       /* bit buffer */
  /*register*/ unsigned k;  /* number of bits in bit buffer */


  /* make local bit buffer */
  b = bb;
  k = bk;


  /* read in last block bit */
  NEEDBITS(1)
  *e = (int)b & 1;
  DUMPBITS(1)


  /* read in block type */
  NEEDBITS(2)
  t = (unsigned)b & 3;
  DUMPBITS(2)


  /* restore the global bit buffer */
  bb = b;
  bk = k;


  /* inflate that block type */
  if (t == 2)
    return csz__Inflate_dynamic();
  if (t == 0)
    return csz__Inflate_stored();
  if (t == 1)
    return csz__Inflate_fixed();


  /* bad block type */
  return 2;
}

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int csz__Inflate_codes	(	struct huft *	tl,
		struct huft *	td,
		int	bl,
		int	bd
	)

Definition at line 638 of file csz_inflate.cc.

{
  /*register*/ unsigned e;  /* table entry flag/number of extra bits */
  unsigned n, d;        /* length and index for copy */
  unsigned w;           /* current window position */
  struct huft *t;       /* pointer to table entry */
  unsigned ml, md;      /* masks for bl and bd bits */
  /*register*/ ulg b;       /* bit buffer */
  /*register*/ unsigned k;  /* number of bits in bit buffer */


  /* make local copies of globals */
  b = bb;                       /* initialize bit buffer */
  k = bk;
  w = wp;                       /* initialize window position */


  /* inflate the coded data */
  ml = mask[bl];           /* precompute masks for speed */
  md = mask[bd];
  while (1)                     /* do until end of block */
  {
    NEEDBITS((unsigned)bl)
    if ((e = (t = tl + ((unsigned)b & ml))->e) > 16)
      do {
        if (e == 99)
          return 1;
        DUMPBITS(t->b)
        e -= 16;
        NEEDBITS(e)
      } while ((e = (t = t->v.t + ((unsigned)b & mask[e]))->e) > 16);
    DUMPBITS(t->b)
    if (e == 16)                /* then it's a literal */
    {
      csz__slide[w++] = (uch)t->v.n;
      if (w == WSIZE)
      {
        FLUSH(w);
        w = 0;
      }
    }
    else                        /* it's an EOB or a length */
    {
      /* exit if end of block */
      if (e == 15)
        break;

      /* get length of block to copy */
      NEEDBITS(e)
      n = t->v.n + ((unsigned)b & mask[e]);
      DUMPBITS(e);

      /* decode distance of block to copy */
      NEEDBITS((unsigned)bd)
      if ((e = (t = td + ((unsigned)b & md))->e) > 16)
        do {
          if (e == 99)
            return 1;
          DUMPBITS(t->b)
          e -= 16;
          NEEDBITS(e)
        } while ((e = (t = t->v.t + ((unsigned)b & mask[e]))->e) > 16);
      DUMPBITS(t->b)
      NEEDBITS(e)
      d = w - t->v.n - ((unsigned)b & mask[e]);
      DUMPBITS(e)

      /* do the copy */
      do {
        n -= (e = (e = WSIZE - ((d &= WSIZE-1) > w ? d : w)) > n ? n : e);
#ifndef NOMEMCPY
        if (w - d >= e)         /* (this test assumes unsigned comparison) */
        {
          memcpy(csz__slide + w, csz__slide + d, e);
          w += e;
          d += e;
        }
        else                      /* do it slow to avoid memcpy() overlap */
#endif /* !NOMEMCPY */
          do {
            csz__slide[w++] = csz__slide[d++];
          } while (--e);
        if (w == WSIZE)
        {
          FLUSH(w);
          w = 0;
        }
      } while (n);
    }
  }


  /* restore the globals from the locals */
  wp = w;                       /* restore global window pointer */
  bb = b;                       /* restore global bit buffer */
  bk = k;


  /* done */
  return 0;
}

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int csz__Inflate_dynamic

(

void

)

Definition at line 854 of file csz_inflate.cc.

{
  int i;                /* temporary variables */
  unsigned j;
  unsigned l;           /* last length */
  unsigned m;           /* mask for bit lengths table */
  unsigned n;           /* number of lengths to get */
  struct huft *tl;      /* literal/length code table */
  struct huft *td;      /* distance code table */
  int bl;               /* lookup bits for tl */
  int bd;               /* lookup bits for td */
  unsigned nb;          /* number of bit length codes */
  unsigned nl;          /* number of literal/length codes */
  unsigned nd;          /* number of distance codes */
#ifdef PKZIP_BUG_WORKAROUND
  static unsigned ll[288+32]; /* literal/length and distance code lengths */
#else
  static unsigned ll[286+30]; /* literal/length and distance code lengths */
#endif
  /*register*/ ulg b;       /* bit buffer */
  /*register*/ unsigned k;  /* number of bits in bit buffer */

  static int qflag = 0; /*G.Barrand*/

  /* make local bit buffer */
  Trace((stderr, "\ndynamic block"));
  b = bb;
  k = bk;


  /* read in table lengths */
  NEEDBITS(5)
  nl = 257 + ((unsigned)b & 0x1f);      /* number of literal/length codes */
  DUMPBITS(5)
  NEEDBITS(5)
  nd = 1 + ((unsigned)b & 0x1f);        /* number of distance codes */
  DUMPBITS(5)
  NEEDBITS(4)
  nb = 4 + ((unsigned)b & 0xf);         /* number of bit length codes */
  DUMPBITS(4)
#ifdef PKZIP_BUG_WORKAROUND
  if (nl > 288 || nd > 32)
#else
  if (nl > 286 || nd > 30)
#endif
    return 1;                   /* bad lengths */


  /* read in bit-length-code lengths */
  for (j = 0; j < nb; j++)
  {
    NEEDBITS(3)
    ll[border[j]] = (unsigned)b & 7;
    DUMPBITS(3)
  }
  for (; j < 19; j++)
    ll[border[j]] = 0;


  /* build decoding table for trees--single level, 7 bit lookup */
  bl = 7;
  if ((i = csz__huft_build(ll, 19, 19, NULL, NULL, &tl, &bl)) != 0)
  {
    if (i == 1)
      csz__huft_free(tl);
    return i;                   /* incomplete code set */
  }

/*G.Barrand : to quiet Coverity : */
#define NEEDBITS_free_tl(n) {while(k<(n)){if(ibufcnt-- <= 0){csz__huft_free(tl);return 1;} b|=((ulg) *ibufptr++)<<k;k+=8;}}

  /* read in literal and distance code lengths */
  n = nl + nd;
  m = mask[bl];
  i = l = 0;
  while ((unsigned)i < n)
  {
    NEEDBITS_free_tl((unsigned)bl)
    j = (td = tl + ((unsigned)b & m))->b;
    DUMPBITS(j)
    j = td->v.n;
    if (j < 16)                 /* length of code in bits (0..15) */
      ll[i++] = l = j;          /* save last length in l */
    else if (j == 16)           /* repeat last length 3 to 6 times */
    {
      NEEDBITS_free_tl(2)
      j = 3 + ((unsigned)b & 3);
      DUMPBITS(2)
      if ((unsigned)i + j > n) {
        csz__huft_free(tl); /*G.Barrand : quiet Coverity*/
        return 1;
      }
      while (j--)
        ll[i++] = l;
    }
    else if (j == 17)           /* 3 to 10 zero length codes */
    {
      NEEDBITS_free_tl(3)
      j = 3 + ((unsigned)b & 7);
      DUMPBITS(3)
      if ((unsigned)i + j > n){
        csz__huft_free(tl); /*G.Barrand : quiet Coverity*/
        return 1;
      }
      while (j--)
        ll[i++] = 0;
      l = 0;
    }
    else                        /* j == 18: 11 to 138 zero length codes */
    {
      NEEDBITS_free_tl(7)
      j = 11 + ((unsigned)b & 0x7f);
      DUMPBITS(7)
      if ((unsigned)i + j > n) {
        csz__huft_free(tl); /*G.Barrand : quiet Coverity*/
        return 1;
      }
      while (j--)
        ll[i++] = 0;
      l = 0;
    }
  }


  /* free decoding table for trees */
  csz__huft_free(tl);


  /* restore the global bit buffer */
  bb = b;
  bk = k;


  /* build the decoding tables for literal/length and distance codes */
  bl = lbits;
  if ((i = csz__huft_build(ll, nl, 257, cplens, cplext, &tl, &bl)) != 0)
  {
    if (i == 1 && !qflag) {
      FPRINTF(stderr, "(incomplete l-tree)  ");
      csz__huft_free(tl);
    }
    return i;                   /* incomplete code set */
  }
  bd = dbits;
  if ((i = csz__huft_build(ll + nl, nd, 0, cpdist, cpdext, &td, &bd)) != 0)
  {
    if (i == 1 && !qflag) {
      FPRINTF(stderr, "(incomplete d-tree)  ");
#ifdef PKZIP_BUG_WORKAROUND
      i = 0;
    }
#else
      csz__huft_free(td);
    }
    csz__huft_free(tl);
    return i;                   /* incomplete code set */
#endif
  }


  /* decompress until an end-of-block code */
  if (csz__Inflate_codes(tl, td, bl, bd))
    return 1;


  /* free the decoding tables, return */
  csz__huft_free(tl);
  csz__huft_free(td);
  return 0;
}

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int csz__Inflate_fixed

(

void

)

Definition at line 806 of file csz_inflate.cc.

{
  /* if first time, set up tables for fixed blocks */
  Trace((stderr, "\nliteral block"));
  if (csz__fixed_tl == (struct huft *)NULL)
  {
    int i;                /* temporary variable */
    static unsigned l[288]; /* length list for huft_build */

    /* literal table */
    for (i = 0; i < 144; i++)
      l[i] = 8;
    for (; i < 256; i++)
      l[i] = 9;
    for (; i < 280; i++)
      l[i] = 7;
    for (; i < 288; i++)          /* make a complete, but wrong code set */
      l[i] = 8;
    csz__fixed_bl = 7;
    if ((i = csz__huft_build(l, 288, 257, cplens, cplext,
                        &csz__fixed_tl, &csz__fixed_bl)) != 0)
    {
      csz__fixed_tl = (struct huft *)NULL;
      return i;
    }

    /* distance table */
    for (i = 0; i < 30; i++)      /* make an incomplete code set */
      l[i] = 5;
    csz__fixed_bd = 5;
    if ((i = csz__huft_build(l, 30, 0, cpdist, cpdext, &csz__fixed_td, &csz__fixed_bd)) > 1)
    {
      csz__huft_free(csz__fixed_tl);
      csz__fixed_tl = (struct huft *)NULL;
      return i;
    }
  }


  /* decompress until an end-of-block code */
  return csz__Inflate_codes(csz__fixed_tl, csz__fixed_td, csz__fixed_bl, csz__fixed_bd) != 0;
}

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int csz__Inflate_free

(

void

)

Definition at line 1111 of file csz_inflate.cc.

{
  if (csz__fixed_tl != (struct huft *)NULL)
  {
    csz__huft_free(csz__fixed_td);
    csz__huft_free(csz__fixed_tl);
    csz__fixed_td = csz__fixed_tl = (struct huft *)NULL;
  }
  return 0;
}

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int csz__Inflate_stored

(

void

)

Definition at line 748 of file csz_inflate.cc.

{
  unsigned n;           /* number of bytes in block */
  unsigned w;           /* current window position */
  /*register*/ ulg b;       /* bit buffer */
  /*register*/ unsigned k;  /* number of bits in bit buffer */


  /* make local copies of globals */
  Trace((stderr, "\nstored block"));
  b = bb;                       /* initialize bit buffer */
  k = bk;
  w = wp;                       /* initialize window position */


  /* go to byte boundary */
  n = k & 7;
  DUMPBITS(n);


  /* get the length and its complement */
  NEEDBITS(16)
  n = ((unsigned)b & 0xffff);
  DUMPBITS(16)
  NEEDBITS(16)
  if (n != (unsigned)((~b) & 0xffff))
    return 1;                   /* error in compressed data */
  DUMPBITS(16)


  /* read and output the compressed data */
  while (n--)
  {
    NEEDBITS(8)
    csz__slide[w++] = (uch)b;
    if (w == WSIZE)
    {
      FLUSH(w);
      w = 0;
    }
    DUMPBITS(8)
  }


  /* restore the globals from the locals */
  wp = w;                       /* restore global window pointer */
  bb = b;                       /* restore global bit buffer */
  bk = k;
  return 0;
}

Here is the caller graph for this function:

void csz__Init_Inflate	(	long	a_ibufcnt,
		unsigned char *	a_ibufptr,
		long	a_obufcnt,
		unsigned char *	a_obufptr
	)

Definition at line 1123 of file csz_inflate.cc.

                                                              {
  ibufcnt = a_ibufcnt;
  ibufptr = a_ibufptr;

  obufcnt = a_obufcnt;
  obufptr = a_obufptr;
}

unsigned char* csz__obufptr

(

)

Definition at line 1131 of file csz_inflate.cc.

{return obufptr;}

static void csz__WriteData ( int  n )

static

Definition at line 1149 of file csz_inflate.cc.

{
  if( obufcnt >= n ) memcpy(obufptr, csz__slide, n);
  obufptr += n;
  obufcnt -= n;
}

Variable Documentation

ulg bb

static

Definition at line 344 of file csz_inflate.cc.

unsigned bk

static

Definition at line 345 of file csz_inflate.cc.

unsigned border[]

static

Initial value:

= {    
        16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15}

Definition at line 298 of file csz_inflate.cc.

ush cpdext[]

static

Initial value:

= {         
        0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6,
        7, 7, 8, 8, 9, 9, 10, 10, 11, 11,
        12, 12, 13, 13}

Definition at line 311 of file csz_inflate.cc.

ush cpdist[]

static

Initial value:

= {         
        1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
        257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
        8193, 12289, 16385, 24577}

Definition at line 307 of file csz_inflate.cc.

ush cplens[]

static

Initial value:

= {         
        3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
        35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0}

Definition at line 300 of file csz_inflate.cc.

ush cplext[]

static

Initial value:

= {         
        0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2,
        3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0, 99, 99}

Definition at line 304 of file csz_inflate.cc.

int csz__fixed_bd

Definition at line 804 of file csz_inflate.cc.

int csz__fixed_bl

Definition at line 804 of file csz_inflate.cc.

struct huft* csz__fixed_td

Definition at line 803 of file csz_inflate.cc.

struct huft* csz__fixed_tl = (struct huft *)NULL

Definition at line 802 of file csz_inflate.cc.

uch csz__slide[32768]

static

Definition at line 293 of file csz_inflate.cc.

int dbits = 6

static

Definition at line 399 of file csz_inflate.cc.

unsigned hufts

static

Definition at line 407 of file csz_inflate.cc.

long ibufcnt

static

Definition at line 347 of file csz_inflate.cc.

uch* ibufptr

static

Definition at line 346 of file csz_inflate.cc.

int lbits = 9

static

Definition at line 398 of file csz_inflate.cc.

ush mask[]

static

Initial value:

= {
    0x0000,
    0x0001, 0x0003, 0x0007, 0x000f, 0x001f, 0x003f, 0x007f, 0x00ff,
    0x01ff, 0x03ff, 0x07ff, 0x0fff, 0x1fff, 0x3fff, 0x7fff, 0xffff
}

Definition at line 317 of file csz_inflate.cc.

long obufcnt

static

Definition at line 347 of file csz_inflate.cc.

uch * obufptr

static

Definition at line 346 of file csz_inflate.cc.

unsigned wp

static

Definition at line 294 of file csz_inflate.cc.