kc3-lang/freetype/src/psaux/t1cmap.c

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• Hash : 8ab0979d
  Author :
  Date : 2006-01-12T08:12:27
  

  Prepare use of pscmap service within CFF module. * include/freetype/internal/services/svpscmap.h: Include FT_INTERNAL_OBJECTS_H. (PS_Unicode_Index_Func): Removed. Unused. (PS_Macintosh_Name_Func): Renamed to... (PS_Macintosh_NameFunc): This. Update all callers. (PS_Adobe_Std_Strings_Func): Renamed to... (PS_Adobe_Std_StringsFunc): This. Update all callers. (PS_UnicodesRec): This is the former `PS_Unicodes' structure. Add `cmap' member. Update all callers. (PS_Unicodes): This is now a typedef'd pointer to PS_UnicodesRec. Update all callers. (PS_Glyph_NameFunc): New typedef. (PS_Unicodes_InitFunc): Change arguments to expect a function and generic data pointer which returns a glyph name from a given index. * src/psnames/psmodule.c (ps_unicodes_init, ps_unicodes_char_index, ps_unicodes_char_next, pscmaps_interface): Updated. * include/freetype/internal/t1types.h (T1_FaceRec): Updated. * src/psaux/t1cmap.h (T1_CmapStdRec): Updated. (T1_CmapUnicode, T1_CmapUnicodeRec): Removed. * src/psaux/t1cmap.c (t1_get_glyph_name): New callback function. (t1_cmap_unicode_init, t1_cmap_unicode_done, t1_cmap_unicode_char_index, t1_cmap_unicode_char_next, t1_cmap_unicode_class_rec): Updated. * src/type42/t42types.h (T42_FaceRec): Updated.

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• src/psaux/t1cmap.c

• /***************************************************************************/
  /*                                                                         */
  /*  t1cmap.c                                                               */
  /*                                                                         */
  /*    Type 1 character map support (body).                                 */
  /*                                                                         */
  /*  Copyright 2002, 2003, 2006 by                                          */
  /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
  /*                                                                         */
  /*  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 "t1cmap.h"
  
  #include FT_INTERNAL_DEBUG_H
  
  #include "psauxerr.h"
  
  
    /*************************************************************************/
    /*************************************************************************/
    /*****                                                               *****/
    /*****          TYPE1 STANDARD (AND EXPERT) ENCODING CMAPS           *****/
    /*****                                                               *****/
    /*************************************************************************/
    /*************************************************************************/
  
    static void
    t1_cmap_std_init( T1_CMapStd  cmap,
                      FT_Int      is_expert )
    {
      T1_Face             face    = (T1_Face)FT_CMAP_FACE( cmap );
      FT_Service_PsCMaps  psnames = (FT_Service_PsCMaps)face->psnames;
  
  
      cmap->num_glyphs    = face->type1.num_glyphs;
      cmap->glyph_names   = (const char* const*)face->type1.glyph_names;
      cmap->sid_to_string = psnames->adobe_std_strings;
      cmap->code_to_sid   = is_expert ? psnames->adobe_expert_encoding
                                      : psnames->adobe_std_encoding;
  
      FT_ASSERT( cmap->code_to_sid != NULL );
    }
  
  
    FT_CALLBACK_DEF( void )
    t1_cmap_std_done( T1_CMapStd  cmap )
    {
      cmap->num_glyphs    = 0;
      cmap->glyph_names   = NULL;
      cmap->sid_to_string = NULL;
      cmap->code_to_sid   = NULL;
    }
  
  
    FT_CALLBACK_DEF( FT_UInt )
    t1_cmap_std_char_index( T1_CMapStd  cmap,
                            FT_UInt32   char_code )
    {
      FT_UInt  result = 0;
  
  
      if ( char_code < 256 )
      {
        FT_UInt      code, n;
        const char*  glyph_name;
  
  
        /* convert character code to Adobe SID string */
        code       = cmap->code_to_sid[char_code];
        glyph_name = cmap->sid_to_string( code );
  
        /* look for the corresponding glyph name */
        for ( n = 0; n < cmap->num_glyphs; n++ )
        {
          const char* gname = cmap->glyph_names[n];
  
  
          if ( gname && gname[0] == glyph_name[0]  &&
               ft_strcmp( gname, glyph_name ) == 0 )
          {
            result = n;
            break;
          }
        }
      }
  
      return result;
    }
  
  
    FT_CALLBACK_DEF( FT_UInt )
    t1_cmap_std_char_next( T1_CMapStd   cmap,
                           FT_UInt32   *pchar_code )
    {
      FT_UInt    result    = 0;
      FT_UInt32  char_code = *pchar_code + 1;
  
  
      while ( char_code < 256 )
      {
        result = t1_cmap_std_char_index( cmap, char_code );
        if ( result != 0 )
          goto Exit;
  
        char_code++;
      }
      char_code = 0;
  
    Exit:
      *pchar_code = char_code;
      return result;
    }
  
  
    FT_CALLBACK_DEF( FT_Error )
    t1_cmap_standard_init( T1_CMapStd  cmap )
    {
      t1_cmap_std_init( cmap, 0 );
      return 0;
    }
  
  
    FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec
    t1_cmap_standard_class_rec =
    {
      sizeof ( T1_CMapStdRec ),
  
      (FT_CMap_InitFunc)     t1_cmap_standard_init,
      (FT_CMap_DoneFunc)     t1_cmap_std_done,
      (FT_CMap_CharIndexFunc)t1_cmap_std_char_index,
      (FT_CMap_CharNextFunc) t1_cmap_std_char_next
    };
  
  
    FT_CALLBACK_DEF( FT_Error )
    t1_cmap_expert_init( T1_CMapStd  cmap )
    {
      t1_cmap_std_init( cmap, 1 );
      return 0;
    }
  
    FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec
    t1_cmap_expert_class_rec =
    {
      sizeof ( T1_CMapStdRec ),
  
      (FT_CMap_InitFunc)     t1_cmap_expert_init,
      (FT_CMap_DoneFunc)     t1_cmap_std_done,
      (FT_CMap_CharIndexFunc)t1_cmap_std_char_index,
      (FT_CMap_CharNextFunc) t1_cmap_std_char_next
    };
  
  
    /*************************************************************************/
    /*************************************************************************/
    /*****                                                               *****/
    /*****                    TYPE1 CUSTOM ENCODING CMAP                 *****/
    /*****                                                               *****/
    /*************************************************************************/
    /*************************************************************************/
  
  
    FT_CALLBACK_DEF( FT_Error )
    t1_cmap_custom_init( T1_CMapCustom  cmap )
    {
      T1_Face      face     = (T1_Face)FT_CMAP_FACE( cmap );
      T1_Encoding  encoding = &face->type1.encoding;
  
  
      cmap->first   = encoding->code_first;
      cmap->count   = (FT_UInt)( encoding->code_last - cmap->first + 1 );
      cmap->indices = encoding->char_index;
  
      FT_ASSERT( cmap->indices != NULL );
      FT_ASSERT( encoding->code_first <= encoding->code_last );
  
      return 0;
    }
  
  
    FT_CALLBACK_DEF( void )
    t1_cmap_custom_done( T1_CMapCustom  cmap )
    {
      cmap->indices = NULL;
      cmap->first   = 0;
      cmap->count   = 0;
    }
  
  
    FT_CALLBACK_DEF( FT_UInt )
    t1_cmap_custom_char_index( T1_CMapCustom  cmap,
                               FT_UInt32      char_code )
    {
      FT_UInt    result = 0;
  
  
      if ( ( char_code >= cmap->first )                  &&
           ( char_code < ( cmap->first + cmap->count ) ) )
        result = cmap->indices[char_code];
  
      return result;
    }
  
  
    FT_CALLBACK_DEF( FT_UInt )
    t1_cmap_custom_char_next( T1_CMapCustom  cmap,
                              FT_UInt32     *pchar_code )
    {
      FT_UInt    result = 0;
      FT_UInt32  char_code = *pchar_code;
  
  
      ++char_code;
  
      if ( char_code < cmap->first )
        char_code = cmap->first;
  
      for ( ; char_code < ( cmap->first + cmap->count ); char_code++ )
      {
        result = cmap->indices[char_code];
        if ( result != 0 )
          goto Exit;
      }
  
      char_code = 0;
  
    Exit:
      *pchar_code = char_code;
      return result;
    }
  
  
    FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec
    t1_cmap_custom_class_rec =
    {
      sizeof ( T1_CMapCustomRec ),
  
      (FT_CMap_InitFunc)     t1_cmap_custom_init,
      (FT_CMap_DoneFunc)     t1_cmap_custom_done,
      (FT_CMap_CharIndexFunc)t1_cmap_custom_char_index,
      (FT_CMap_CharNextFunc) t1_cmap_custom_char_next
    };
  
  
    /*************************************************************************/
    /*************************************************************************/
    /*****                                                               *****/
    /*****            TYPE1 SYNTHETIC UNICODE ENCODING CMAP              *****/
    /*****                                                               *****/
    /*************************************************************************/
    /*************************************************************************/
  
    const char *
    t1_get_glyph_name( T1_Face  face,
                       FT_UInt  idx )
    {
      return face->type1.glyph_names[idx];
    }
  
  
    FT_CALLBACK_DEF( FT_Error )
    t1_cmap_unicode_init( PS_Unicodes  unicodes )
    {
      T1_Face             face    = (T1_Face)FT_CMAP_FACE( unicodes );
      FT_Memory           memory  = FT_FACE_MEMORY( face );
      FT_Service_PsCMaps  psnames = (FT_Service_PsCMaps)face->psnames;
  
  
      return psnames->unicodes_init( memory,
                                     unicodes,
                                     face->type1.num_glyphs,
                                     (PS_Glyph_NameFunc)&t1_get_glyph_name,
                                     (FT_Pointer)face );
    }
  
  
    FT_CALLBACK_DEF( void )
    t1_cmap_unicode_done( PS_Unicodes  unicodes )
    {
      FT_Face    face   = FT_CMAP_FACE( unicodes );
      FT_Memory  memory = FT_FACE_MEMORY( face );
  
  
      FT_FREE( unicodes->maps );
      unicodes->num_maps = 0;
    }
  
  
    FT_CALLBACK_DEF( FT_UInt )
    t1_cmap_unicode_char_index( PS_Unicodes  unicodes,
                                FT_UInt32    char_code )
    {
      T1_Face             face    = (T1_Face)FT_CMAP_FACE( unicodes );
      FT_Service_PsCMaps  psnames = (FT_Service_PsCMaps)face->psnames;
  
  
      return psnames->unicodes_char_index( unicodes, char_code );
    }
  
  
    FT_CALLBACK_DEF( FT_UInt )
    t1_cmap_unicode_char_next( PS_Unicodes  unicodes,
                               FT_UInt32   *pchar_code )
    {
      T1_Face             face    = (T1_Face)FT_CMAP_FACE( unicodes );
      FT_Service_PsCMaps  psnames = (FT_Service_PsCMaps)face->psnames;
  
  
      return psnames->unicodes_char_next( unicodes, pchar_code );
    }
  
  
    FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec
    t1_cmap_unicode_class_rec =
    {
      sizeof ( PS_UnicodesRec ),
  
      (FT_CMap_InitFunc)     t1_cmap_unicode_init,
      (FT_CMap_DoneFunc)     t1_cmap_unicode_done,
      (FT_CMap_CharIndexFunc)t1_cmap_unicode_char_index,
      (FT_CMap_CharNextFunc) t1_cmap_unicode_char_next
    };
  
  
  /* END */
  

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