kc3-lang/freetype/src/gzip/infutil.c

• Show log

  Commit

• Hash : 60b32e16
  Author :
  Date : 2002-11-06T22:32:54
  

  2002-11-05  David Turner  <david@freetype.org>
  
          * include/freetype/config/ftoption.h, src/gzip/ftgzip.c: added
          support for the FT_CONFIG_OPTION_SYSTEM_ZLIB option, used to specify
          the use of system-wide zlib.
  
          Note that this macro, as well as FT_CONFIG_OPTION_BYTECODE_INTERPRETER,
          is not #undef-ed anymore. This allows the build system to define them
          depending on the configuration (typically by adding -D flags at
          compile time).
  
          * src/sfnt/ttcmap0.c (tt_face_build_cmaps): removed compiler warnings
          in optimized mode relative to the "volatile" local variables. This was
          not a compiler bug after all, but the fact that a pointer to a volatile
          variable is not the same than a volatile pointer to a variable :-)
  
          the fix was to change  "volatile FT_Byte*  p"
          into                   "FT_Byte* volatile  p"
  
          * src/pfr/pfrload.c, src/pfr/pfrdrivr.c, src/gzip/inftrees.c: removed
          compiler warnings in optimized modes
  
          * src/gzip/*.[hc]: modified our ZLib copy in order to prevent exporting
          any zlib function names outside of the component. This prevents linking
          problems on some platforms, when applications want to link FreeType
          _and_ ZLib together.
  
  
  2002-11-05  Juliusz  <jch@pps.jussieu.fr>
  
          * src/psaux/psobjs.c (ps_table_add): modified increment loop in
          order to implement exponential behaviour
  

Download

• src/gzip/infutil.c

• /* inflate_util.c -- data and routines common to blocks and codes
   * Copyright (C) 1995-2002 Mark Adler
   * For conditions of distribution and use, see copyright notice in zlib.h
   */
  
  #include "zutil.h"
  #include "infblock.h"
  #include "inftrees.h"
  #include "infcodes.h"
  #include "infutil.h"
  
  
  /* And'ing with mask[n] masks the lower n bits */
  local uInt inflate_mask[17] = {
      0x0000,
      0x0001, 0x0003, 0x0007, 0x000f, 0x001f, 0x003f, 0x007f, 0x00ff,
      0x01ff, 0x03ff, 0x07ff, 0x0fff, 0x1fff, 0x3fff, 0x7fff, 0xffff
  };
  
  
  /* copy as much as possible from the sliding window to the output area */
  local int inflate_flush(s, z, r)
  inflate_blocks_statef *s;
  z_streamp z;
  int r;
  {
    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;
  }
  

Download