misc/libfreetype/src/psaux/t1cmap.c
author Leonard
Sat, 03 Dec 2011 15:15:14 +0100
changeset 6482 07eeb905620e
parent 5172 88f2e05288ba
permissions -rw-r--r--
GCI task: iOS German
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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/***************************************************************************/
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/*                                                                         */
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/*  t1cmap.c                                                               */
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/*                                                                         */
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/*    Type 1 character map support (body).                                 */
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/*                                                                         */
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/*  Copyright 2002, 2003, 2006, 2007 by                                    */
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/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
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/*                                                                         */
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/*  This file is part of the FreeType project, and may only be used,       */
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/*  modified, and distributed under the terms of the FreeType project      */
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/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
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/*  this file you indicate that you have read the license and              */
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/*  understand and accept it fully.                                        */
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/*                                                                         */
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/***************************************************************************/
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#include "t1cmap.h"
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#include FT_INTERNAL_DEBUG_H
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#include "psauxerr.h"
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  /*************************************************************************/
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  /*************************************************************************/
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  /*****                                                               *****/
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  /*****          TYPE1 STANDARD (AND EXPERT) ENCODING CMAPS           *****/
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  /*****                                                               *****/
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  /*************************************************************************/
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  /*************************************************************************/
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  static void
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  t1_cmap_std_init( T1_CMapStd  cmap,
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                    FT_Int      is_expert )
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  {
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    T1_Face             face    = (T1_Face)FT_CMAP_FACE( cmap );
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    FT_Service_PsCMaps  psnames = (FT_Service_PsCMaps)face->psnames;
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    cmap->num_glyphs    = face->type1.num_glyphs;
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    cmap->glyph_names   = (const char* const*)face->type1.glyph_names;
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    cmap->sid_to_string = psnames->adobe_std_strings;
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    cmap->code_to_sid   = is_expert ? psnames->adobe_expert_encoding
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                                    : psnames->adobe_std_encoding;
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    FT_ASSERT( cmap->code_to_sid != NULL );
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  }
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  FT_CALLBACK_DEF( void )
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  t1_cmap_std_done( T1_CMapStd  cmap )
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  {
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    cmap->num_glyphs    = 0;
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    cmap->glyph_names   = NULL;
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    cmap->sid_to_string = NULL;
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    cmap->code_to_sid   = NULL;
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  }
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  FT_CALLBACK_DEF( FT_UInt )
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  t1_cmap_std_char_index( T1_CMapStd  cmap,
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                          FT_UInt32   char_code )
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  {
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    FT_UInt  result = 0;
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    if ( char_code < 256 )
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    {
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      FT_UInt      code, n;
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      const char*  glyph_name;
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      /* convert character code to Adobe SID string */
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      code       = cmap->code_to_sid[char_code];
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      glyph_name = cmap->sid_to_string( code );
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      /* look for the corresponding glyph name */
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      for ( n = 0; n < cmap->num_glyphs; n++ )
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      {
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        const char* gname = cmap->glyph_names[n];
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        if ( gname && gname[0] == glyph_name[0]  &&
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             ft_strcmp( gname, glyph_name ) == 0 )
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        {
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          result = n;
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          break;
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        }
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      }
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    }
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    return result;
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  }
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  FT_CALLBACK_DEF( FT_UInt32 )
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  t1_cmap_std_char_next( T1_CMapStd   cmap,
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                         FT_UInt32   *pchar_code )
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  {
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    FT_UInt    result    = 0;
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    FT_UInt32  char_code = *pchar_code + 1;
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    while ( char_code < 256 )
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    {
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      result = t1_cmap_std_char_index( cmap, char_code );
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      if ( result != 0 )
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        goto Exit;
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      char_code++;
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    }
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    char_code = 0;
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  Exit:
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    *pchar_code = char_code;
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    return result;
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  }
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  FT_CALLBACK_DEF( FT_Error )
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  t1_cmap_standard_init( T1_CMapStd  cmap )
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  {
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    t1_cmap_std_init( cmap, 0 );
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    return 0;
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  }
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  FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec
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  t1_cmap_standard_class_rec =
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  {
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    sizeof ( T1_CMapStdRec ),
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    (FT_CMap_InitFunc)     t1_cmap_standard_init,
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    (FT_CMap_DoneFunc)     t1_cmap_std_done,
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    (FT_CMap_CharIndexFunc)t1_cmap_std_char_index,
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    (FT_CMap_CharNextFunc) t1_cmap_std_char_next,
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    NULL, NULL, NULL, NULL, NULL
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  };
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  FT_CALLBACK_DEF( FT_Error )
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  t1_cmap_expert_init( T1_CMapStd  cmap )
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  {
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    t1_cmap_std_init( cmap, 1 );
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    return 0;
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  }
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  FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec
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  t1_cmap_expert_class_rec =
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  {
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    sizeof ( T1_CMapStdRec ),
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    (FT_CMap_InitFunc)     t1_cmap_expert_init,
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    (FT_CMap_DoneFunc)     t1_cmap_std_done,
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    (FT_CMap_CharIndexFunc)t1_cmap_std_char_index,
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    (FT_CMap_CharNextFunc) t1_cmap_std_char_next,
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    NULL, NULL, NULL, NULL, NULL
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  };
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   163
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   164
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  /*************************************************************************/
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  /*************************************************************************/
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  /*****                                                               *****/
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  /*****                    TYPE1 CUSTOM ENCODING CMAP                 *****/
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  /*****                                                               *****/
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  /*************************************************************************/
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  /*************************************************************************/
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   172
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   173
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   174
  FT_CALLBACK_DEF( FT_Error )
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   175
  t1_cmap_custom_init( T1_CMapCustom  cmap )
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   176
  {
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    T1_Face      face     = (T1_Face)FT_CMAP_FACE( cmap );
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    T1_Encoding  encoding = &face->type1.encoding;
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   179
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    cmap->first   = encoding->code_first;
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    cmap->count   = (FT_UInt)( encoding->code_last - cmap->first );
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    cmap->indices = encoding->char_index;
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   184
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    FT_ASSERT( cmap->indices != NULL );
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   186
    FT_ASSERT( encoding->code_first <= encoding->code_last );
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   187
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   188
    return 0;
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   189
  }
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   190
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   191
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  FT_CALLBACK_DEF( void )
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   193
  t1_cmap_custom_done( T1_CMapCustom  cmap )
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  {
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    cmap->indices = NULL;
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    cmap->first   = 0;
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   197
    cmap->count   = 0;
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   198
  }
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   199
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   200
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  FT_CALLBACK_DEF( FT_UInt )
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  t1_cmap_custom_char_index( T1_CMapCustom  cmap,
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   203
                             FT_UInt32      char_code )
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  {
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   205
    FT_UInt    result = 0;
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   206
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   207
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   208
    if ( ( char_code >= cmap->first )                  &&
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   209
         ( char_code < ( cmap->first + cmap->count ) ) )
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      result = cmap->indices[char_code];
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   211
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   212
    return result;
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   213
  }
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   214
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   215
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  FT_CALLBACK_DEF( FT_UInt32 )
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  t1_cmap_custom_char_next( T1_CMapCustom  cmap,
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                            FT_UInt32     *pchar_code )
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   219
  {
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   220
    FT_UInt    result = 0;
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   221
    FT_UInt32  char_code = *pchar_code;
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   222
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   223
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   224
    ++char_code;
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   225
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   226
    if ( char_code < cmap->first )
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   227
      char_code = cmap->first;
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   228
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   229
    for ( ; char_code < ( cmap->first + cmap->count ); char_code++ )
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   230
    {
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   231
      result = cmap->indices[char_code];
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   232
      if ( result != 0 )
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   233
        goto Exit;
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   234
    }
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   235
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   236
    char_code = 0;
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   237
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   238
  Exit:
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   239
    *pchar_code = char_code;
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   240
    return result;
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   241
  }
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   242
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   243
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   244
  FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec
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   245
  t1_cmap_custom_class_rec =
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   246
  {
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   247
    sizeof ( T1_CMapCustomRec ),
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   248
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   249
    (FT_CMap_InitFunc)     t1_cmap_custom_init,
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   250
    (FT_CMap_DoneFunc)     t1_cmap_custom_done,
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   251
    (FT_CMap_CharIndexFunc)t1_cmap_custom_char_index,
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   252
    (FT_CMap_CharNextFunc) t1_cmap_custom_char_next,
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   253
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   254
    NULL, NULL, NULL, NULL, NULL
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   255
  };
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   256
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   257
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   258
  /*************************************************************************/
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   259
  /*************************************************************************/
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   260
  /*****                                                               *****/
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   261
  /*****            TYPE1 SYNTHETIC UNICODE ENCODING CMAP              *****/
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   262
  /*****                                                               *****/
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   263
  /*************************************************************************/
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   264
  /*************************************************************************/
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   265
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   266
  FT_CALLBACK_DEF( const char * )
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   267
  t1_get_glyph_name( T1_Face  face,
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   268
                     FT_UInt  idx )
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   269
  {
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    return face->type1.glyph_names[idx];
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   271
  }
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   272
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   273
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   274
  FT_CALLBACK_DEF( FT_Error )
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   275
  t1_cmap_unicode_init( PS_Unicodes  unicodes )
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   276
  {
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   277
    T1_Face             face    = (T1_Face)FT_CMAP_FACE( unicodes );
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   278
    FT_Memory           memory  = FT_FACE_MEMORY( face );
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   279
    FT_Service_PsCMaps  psnames = (FT_Service_PsCMaps)face->psnames;
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   280
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   281
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   282
    return psnames->unicodes_init( memory,
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   283
                                   unicodes,
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koda
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   284
                                   face->type1.num_glyphs,
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   285
                                   (PS_GetGlyphNameFunc)&t1_get_glyph_name,
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   286
                                   (PS_FreeGlyphNameFunc)NULL,
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   287
                                   (FT_Pointer)face );
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   288
  }
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   289
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   290
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   291
  FT_CALLBACK_DEF( void )
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   292
  t1_cmap_unicode_done( PS_Unicodes  unicodes )
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   293
  {
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   294
    FT_Face    face   = FT_CMAP_FACE( unicodes );
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   295
    FT_Memory  memory = FT_FACE_MEMORY( face );
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   296
88f2e05288ba aaand let's add freetype as well while we are at it
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   297
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   298
    FT_FREE( unicodes->maps );
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   299
    unicodes->num_maps = 0;
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   300
  }
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   301
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koda
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   302
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   303
  FT_CALLBACK_DEF( FT_UInt )
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   304
  t1_cmap_unicode_char_index( PS_Unicodes  unicodes,
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   305
                              FT_UInt32    char_code )
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   306
  {
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   307
    T1_Face             face    = (T1_Face)FT_CMAP_FACE( unicodes );
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koda
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   308
    FT_Service_PsCMaps  psnames = (FT_Service_PsCMaps)face->psnames;
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koda
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   309
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koda
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   310
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   311
    return psnames->unicodes_char_index( unicodes, char_code );
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   312
  }
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koda
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   313
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koda
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   314
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   315
  FT_CALLBACK_DEF( FT_UInt32 )
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   316
  t1_cmap_unicode_char_next( PS_Unicodes  unicodes,
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   317
                             FT_UInt32   *pchar_code )
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koda
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   318
  {
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   319
    T1_Face             face    = (T1_Face)FT_CMAP_FACE( unicodes );
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koda
parents:
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    FT_Service_PsCMaps  psnames = (FT_Service_PsCMaps)face->psnames;
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    return psnames->unicodes_char_next( unicodes, pchar_code );
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  }
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  FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec
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  t1_cmap_unicode_class_rec =
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  {
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    sizeof ( PS_UnicodesRec ),
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    (FT_CMap_InitFunc)     t1_cmap_unicode_init,
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    (FT_CMap_DoneFunc)     t1_cmap_unicode_done,
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    (FT_CMap_CharIndexFunc)t1_cmap_unicode_char_index,
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    (FT_CMap_CharNextFunc) t1_cmap_unicode_char_next,
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    NULL, NULL, NULL, NULL, NULL
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  };
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/* END */