godot/thirdparty/freetype/src/lzw/ftlzw.c

/****************************************************************************
 *
 * ftlzw.c
 *
 *   FreeType support for .Z compressed files.
 *
 * This optional component relies on NetBSD's zopen().  It should mainly
 * be used to parse compressed PCF fonts, as found with many X11 server
 * distributions.
 *
 * Copyright (C) 2004-2023 by
 * Albert Chin-A-Young.
 *
 * based on code in `src/gzip/ftgzip.c'
 *
 * This file is part of the FreeType project, and may only be used,
 * modified, and distributed under the terms of the FreeType project
 * license, LICENSE.TXT.  By continuing to use, modify, or distribute
 * this file you indicate that you have read the license and
 * understand and accept it fully.
 *
 */

#include <freetype/internal/ftmemory.h>
#include <freetype/internal/ftstream.h>
#include <freetype/internal/ftdebug.h>
#include <freetype/ftlzw.h>
#include FT_CONFIG_STANDARD_LIBRARY_H


#include <freetype/ftmoderr.h>

#undef FTERRORS_H_

#undef  FT_ERR_PREFIX
#define FT_ERR_PREFIX …
#define FT_ERR_BASE …

#include <freetype/fterrors.h>


#ifdef FT_CONFIG_OPTION_USE_LZW

#include "ftzopen.h"


/***************************************************************************/
/***************************************************************************/
/*****                                                                 *****/
/*****                  M E M O R Y   M A N A G E M E N T              *****/
/*****                                                                 *****/
/***************************************************************************/
/***************************************************************************/

/***************************************************************************/
/***************************************************************************/
/*****                                                                 *****/
/*****                   F I L E   D E S C R I P T O R                 *****/
/*****                                                                 *****/
/***************************************************************************/
/***************************************************************************/

#define FT_LZW_BUFFER_SIZE …

  FT_LZWFile;


  /* check and skip .Z header */
  static FT_Error
  ft_lzw_check_header( FT_Stream  stream )
  { … }


  static FT_Error
  ft_lzw_file_init( FT_LZWFile  zip,
                    FT_Stream   stream,
                    FT_Stream   source )
  { … }


  static void
  ft_lzw_file_done( FT_LZWFile  zip )
  { … }


  static FT_Error
  ft_lzw_file_reset( FT_LZWFile  zip )
  { … }


  static FT_Error
  ft_lzw_file_fill_output( FT_LZWFile  zip )
  { … }


  /* fill output buffer; `count' must be <= FT_LZW_BUFFER_SIZE */
  static FT_Error
  ft_lzw_file_skip_output( FT_LZWFile  zip,
                           FT_ULong    count )
  { … }


  static FT_ULong
  ft_lzw_file_io( FT_LZWFile  zip,
                  FT_ULong    pos,
                  FT_Byte*    buffer,
                  FT_ULong    count )
  { … }


/***************************************************************************/
/***************************************************************************/
/*****                                                                 *****/
/*****            L Z W   E M B E D D I N G   S T R E A M              *****/
/*****                                                                 *****/
/***************************************************************************/
/***************************************************************************/

  static void
  ft_lzw_stream_close( FT_Stream  stream )
  { … }


  static unsigned long
  ft_lzw_stream_io( FT_Stream       stream,
                    unsigned long   offset,
                    unsigned char*  buffer,
                    unsigned long   count )
  { … }


  FT_EXPORT_DEF( FT_Error )
  FT_Stream_OpenLZW( FT_Stream  stream,
                     FT_Stream  source )
  { … }


#include "ftzopen.c"


#else  /* !FT_CONFIG_OPTION_USE_LZW */


  FT_EXPORT_DEF( FT_Error )
  FT_Stream_OpenLZW( FT_Stream  stream,
                     FT_Stream  source )
  {
    FT_UNUSED( stream );
    FT_UNUSED( source );

    return FT_THROW( Unimplemented_Feature );
  }


#endif /* !FT_CONFIG_OPTION_USE_LZW */


/* END */