  IsMacResource( FT_Library  library,
                 FT_Stream   stream,
                 FT_Long     resource_offset,
                 FT_Long     face_index,
                 FT_Face    *aface )
  {
    FT_Memory  memory = library->memory;
    FT_Error   error;
    FT_Long    map_offset, rdara_pos;
    FT_Long    *data_offsets;
    FT_Long    count;


    error = FT_Raccess_Get_HeaderInfo( library, stream, resource_offset,
                                       &map_offset, &rdara_pos );
    if ( error )
      return error;

    error = FT_Raccess_Get_DataOffsets( library, stream,
                                        map_offset, rdara_pos,
                                        TTAG_POST,
                                        &data_offsets, &count );
    if ( !error )
    {
      error = Mac_Read_POST_Resource( library, stream, data_offsets, count,
                                      face_index, aface );
      FT_FREE( data_offsets );
      /* POST exists in an LWFN providing a single face */
      if ( !error )
        (*aface)->num_faces = 1;
      return error;
    }

    error = FT_Raccess_Get_DataOffsets( library, stream,
                                        map_offset, rdara_pos,
                                        TTAG_sfnt,
                                        &data_offsets, &count );
    if ( !error )
    {
      FT_Long  face_index_internal = face_index % count;


      error = Mac_Read_sfnt_Resource( library, stream, data_offsets, count,
                                      face_index_internal, aface );
      FT_FREE( data_offsets );
      if ( !error )
        (*aface)->num_faces = count;
    }

    return error;
  }

  IsMacResource( FT_Library  library,
                 FT_Stream   stream,
                 FT_Long     resource_offset,
                 FT_Long     face_index,
                 FT_Face    *aface )
  {
    FT_Memory  memory = library->memory;
    FT_Error   error;
    FT_Long    map_offset, rdara_pos;
    FT_Long    *data_offsets;
    FT_Long    count;


    error = FT_Raccess_Get_HeaderInfo( library, stream, resource_offset,
                                       &map_offset, &rdara_pos );
    if ( error )
      return error;

    error = FT_Raccess_Get_DataOffsets( library, stream,
                                        map_offset, rdara_pos,
                                        TTAG_POST,
                                        &data_offsets, &count );
    if ( !error )
    {
      error = Mac_Read_POST_Resource( library, stream, data_offsets, count,
                                      face_index, aface );
      FT_FREE( data_offsets );
      /* POST exists in an LWFN providing a single face */
      if ( !error )
        (*aface)->num_faces = 1;
      return error;
    }

    error = FT_Raccess_Get_DataOffsets( library, stream,
                                        map_offset, rdara_pos,
                                        TTAG_sfnt,
                                        &data_offsets, &count );
    if ( !error )
    {
      FT_Long  face_index_internal = face_index % count;


      error = Mac_Read_sfnt_Resource( library, stream, data_offsets, count,
                                      face_index_internal, aface );
      FT_FREE( data_offsets );
      if ( !error )
        (*aface)->num_faces = count;
    }

    return error;
  }
