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

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• Hash : 9a966b7d
  Author :
  Date : 2007-10-15T17:21:32
  

  Add support for cmap type 14. * devel/ftoption.h, include/freetype/config/ftoption.h (TT_CONFIG_CMAP_FORMAT_14): New macro. * include/freetype/internal/ftobjs.h (FT_CMap_CharVarIndexFunc, FT_CMap_CharVarIsDefaultFunc, FT_CMap_VariantListFunc, FT_CMap_CharVariantListFunc, FT_CMap_VariantCharListFunc): New support function prototypes. (FT_CMap_ClassRec): Add them. Update all users. * include/freetype/ttnameid.h (TT_APPLE_ID_VARIANT_SELECTOR): New macro. * include/freetype/freetype.h (FT_Get_Char_Variant_Index, FT_Get_Char_Variant_IsDefault, FT_Get_Variant_Selectors, FT_Get_Variants_Of_Char, FT_Get_Chars_Of_Variant): New API functions. * src/base/ftobjs.c (find_variant_selector_charmap): New auxiliary function. (FT_Set_Charmap): Disallow cmaps of type 14. (FT_Get_Char_Variant_Index, FT_Get_Char_Variant_IsDefault, FT_Get_Variant_Selectors, FT_Get_Variants_Of_Char, FT_Get_Chars_Of_Variant): New API functions. * src/sfnt/ttcmap.c (TT_PEEK_UINT24, TT_NEXT_UINT24): New macros. (TT_CMap14Rec, tt_cmap14_init, tt_cmap14_validate, tt_cmap14_char_index, tt_cmap14_char_next, tt_cmap14_get_info, tt_cmap14_char_map_def_binary, tt_cmap14_char_map_nondef_binary, tt_cmap14_find_variant, tt_cmap14_char_var_index, tt_cmap14_char_var_isdefault, tt_cmap14_variants, tt_cmap14_char_variants, tt_cmap14_def_char_count, tt_cmap14_get_def_chars, tt_cmap14_get_nondef_chars, tt_cmap14_variant_chars, tt_cmap14_class_rec): New functions and structures for cmap 14 support. (tt_cmap_classes): Register tt_cmap14_class_rec. (tt_face_build_cmaps): One more error message. * docs/CHANGES: Mention cmap 14 support.

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• src/psaux/t1cmap.c

• /***************************************************************************/
  /*                                                                         */
  /*  t1cmap.c                                                               */
  /*                                                                         */
  /*    Type 1 character map support (body).                                 */
  /*                                                                         */
  /*  Copyright 2002, 2003, 2006, 2007 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,
  
      NULL, NULL, NULL, NULL, NULL
    };
  
  
    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,
  
      NULL, NULL, NULL, NULL, NULL
    };
  
  
    /*************************************************************************/
    /*************************************************************************/
    /*****                                                               *****/
    /*****                    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,
  
      NULL, NULL, NULL, NULL, NULL
    };
  
  
    /*************************************************************************/
    /*************************************************************************/
    /*****                                                               *****/
    /*****            TYPE1 SYNTHETIC UNICODE ENCODING CMAP              *****/
    /*****                                                               *****/
    /*************************************************************************/
    /*************************************************************************/
  
    FT_CALLBACK_DEF( 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_GetGlyphNameFunc)&t1_get_glyph_name,
                                     (PS_FreeGlyphNameFunc)NULL,
                                     (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,
  
      NULL, NULL, NULL, NULL, NULL
    };
  
  
  /* END */
  

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