infutil.c File Reference

#include "zutil.h"
#include "infblock.h"
#include "inftrees.h"
#include "infcodes.h"
#include "infutil.h"

Include dependency graph for infutil.c:

Go to the source code of this file.

Functions
int	inflate_flush (inflate_blocks_statef *s, z_streamp z, int r)

Variables
const uInt	inflate_mask [17]

Function Documentation

inflate_flush()

int inflate_flush	(	inflate_blocks_statef *	s,
		z_streamp	z,
		int	r
	)

Definition at line 22 of file infutil.c.

{
  uInt n;
  Bytef *p;
  Bytef *q;
 
  /* local copies of source and destination pointers */
  p = z->next_out;
  q = s->read;
 
  /* compute number of bytes to copy as far as end of window */
  n = (uInt)((q <= s->write ? s->write : s->end) - q);
  if (n > z->avail_out) n = z->avail_out;
  if (n && r == Z_BUF_ERROR) r = Z_OK;
 
  /* update counters */
  z->avail_out -= n;
  z->total_out += n;
 
  /* update check information */
  if (s->checkfn != Z_NULL)
    z->adler = s->check = (*s->checkfn)(s->check, q, n);
 
  /* copy as far as end of window */
  zmemcpy(p, q, n);
  p += n;
  q += n;
 
  /* see if more to copy at beginning of window */
  if (q == s->end)
  {
    /* wrap pointers */
    q = s->window;
    if (s->write == s->end)
      s->write = s->window;
 
    /* compute bytes to copy */
    n = (uInt)(s->write - q);
    if (n > z->avail_out) n = z->avail_out;
    if (n && r == Z_BUF_ERROR) r = Z_OK;
 
    /* update counters */
    z->avail_out -= n;
    z->total_out += n;
 
    /* update check information */
    if (s->checkfn != Z_NULL)
      z->adler = s->check = (*s->checkfn)(s->check, q, n);
 
    /* copy */
    zmemcpy(p, q, n);
    p += n;
    q += n;
  }
 
  /* update pointers */
  z->next_out = p;
  s->read = q;
 
  /* done */
  return r;
}

Referenced by inflate_blocks().

Variable Documentation

inflate_mask

const uInt inflate_mask[17]

Initial value:

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

Definition at line 14 of file infutil.c.

Referenced by inflate_blocks(), and inflate_codes().