1 /***************************************************************************/
   2 /*                                                                         */
   3 /*  ftsnames.c                                                             */
   4 /*                                                                         */
   5 /*    Simple interface to access SFNT name tables (which are used          */
   6 /*    to hold font names, copyright info, notices, etc.) (body).           */
   7 /*                                                                         */
   8 /*    This is _not_ used to retrieve glyph names!                          */
   9 /*                                                                         */
  10 /*  Copyright 1996-2018 by                                                 */
  11 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
  12 /*                                                                         */
  13 /*  This file is part of the FreeType project, and may only be used,       */
  14 /*  modified, and distributed under the terms of the FreeType project      */
  15 /*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
  16 /*  this file you indicate that you have read the license and              */
  17 /*  understand and accept it fully.                                        */
  18 /*                                                                         */
  19 /***************************************************************************/
  20 
  21 
  22 #include <ft2build.h>
  23 #include FT_INTERNAL_DEBUG_H
  24 
  25 #include FT_SFNT_NAMES_H
  26 #include FT_INTERNAL_TRUETYPE_TYPES_H
  27 #include FT_INTERNAL_STREAM_H
  28 
  29 
  30 #ifdef TT_CONFIG_OPTION_SFNT_NAMES
  31 
  32 
  33   /* documentation is in ftsnames.h */
  34 
  35   FT_EXPORT_DEF( FT_UInt )
  36   FT_Get_Sfnt_Name_Count( FT_Face  face )
  37   {
  38     return ( face && FT_IS_SFNT( face ) ) ? ((TT_Face)face)->num_names : 0;
  39   }
  40 
  41 
  42   /* documentation is in ftsnames.h */
  43 
  44   FT_EXPORT_DEF( FT_Error )
  45   FT_Get_Sfnt_Name( FT_Face       face,
  46                     FT_UInt       idx,
  47                     FT_SfntName  *aname )
  48   {
  49     FT_Error  error = FT_ERR( Invalid_Argument );
  50 
  51 
  52     if ( aname && face && FT_IS_SFNT( face ) )
  53     {
  54       TT_Face  ttface = (TT_Face)face;
  55 
  56 
  57       if ( idx < (FT_UInt)ttface->num_names )
  58       {
  59         TT_Name  entry = ttface->name_table.names + idx;
  60 
  61 
  62         /* load name on demand */
  63         if ( entry->stringLength > 0 && !entry->string )
  64         {
  65           FT_Memory  memory = face->memory;
  66           FT_Stream  stream = face->stream;
  67 
  68 
  69           if ( FT_NEW_ARRAY  ( entry->string, entry->stringLength ) ||
  70                FT_STREAM_SEEK( entry->stringOffset )                ||
  71                FT_STREAM_READ( entry->string, entry->stringLength ) )
  72           {
  73             FT_FREE( entry->string );
  74             entry->stringLength = 0;
  75           }
  76         }
  77 
  78         aname->platform_id = entry->platformID;
  79         aname->encoding_id = entry->encodingID;
  80         aname->language_id = entry->languageID;
  81         aname->name_id     = entry->nameID;
  82         aname->string      = (FT_Byte*)entry->string;
  83         aname->string_len  = entry->stringLength;
  84 
  85         error = FT_Err_Ok;
  86       }
  87     }
  88 
  89     return error;
  90   }
  91 
  92 
  93   /* documentation is in ftsnames.h */
  94 
  95   FT_EXPORT_DEF( FT_Error )
  96   FT_Get_Sfnt_LangTag( FT_Face          face,
  97                        FT_UInt          langID,
  98                        FT_SfntLangTag  *alangTag )
  99   {
 100     FT_Error  error = FT_ERR( Invalid_Argument );
 101 
 102 
 103     if ( alangTag && face && FT_IS_SFNT( face ) )
 104     {
 105       TT_Face  ttface = (TT_Face)face;
 106 
 107 
 108       if ( ttface->name_table.format != 1 )
 109         return FT_THROW( Invalid_Table );
 110 
 111       if ( langID > 0x8000U                                        &&
 112            langID - 0x8000U < ttface->name_table.numLangTagRecords )
 113       {
 114         TT_LangTag  entry = ttface->name_table.langTags +
 115                             ( langID - 0x8000U );
 116 
 117 
 118         /* load name on demand */
 119         if ( entry->stringLength > 0 && !entry->string )
 120         {
 121           FT_Memory  memory = face->memory;
 122           FT_Stream  stream = face->stream;
 123 
 124 
 125           if ( FT_NEW_ARRAY  ( entry->string, entry->stringLength ) ||
 126                FT_STREAM_SEEK( entry->stringOffset )                ||
 127                FT_STREAM_READ( entry->string, entry->stringLength ) )
 128           {
 129             FT_FREE( entry->string );
 130             entry->stringLength = 0;
 131           }
 132         }
 133 
 134         alangTag->string     = (FT_Byte*)entry->string;
 135         alangTag->string_len = entry->stringLength;
 136 
 137         error = FT_Err_Ok;
 138       }
 139     }
 140 
 141     return error;
 142   }
 143 
 144 
 145 #endif /* TT_CONFIG_OPTION_SFNT_NAMES */
 146 
 147 
 148 /* END */