static FT_Error
  read_pfb_tag( FT_Stream   stream,
                FT_UShort  *atag,
                FT_ULong   *asize )
  {
    FT_Error   error;
    FT_UShort  tag;
    FT_ULong   size;


    *atag  = 0;
    *asize = 0;

    if ( !FT_READ_USHORT( tag ) )
    {
      if ( tag == 0x8001U || tag == 0x8002U )
      {
        if ( !FT_READ_ULONG_LE( size ) )
          *asize = size;
      }

      *atag = tag;
    }

    return error;
  }
Exemplo n.º 2
0
  static FT_Error
  pcf_get_accel( FT_Stream  stream,
                 PCF_Face   face,
                 FT_ULong   type )
  {
    FT_ULong   format, size;
    FT_Error   error = PCF_Err_Ok;
    PCF_Accel  accel = &face->accel;


    error = pcf_seek_to_table_type( stream,
                                    face->toc.tables,
                                    face->toc.count,
                                    type,
                                    &format,
                                    &size );
    if ( error )
      goto Bail;

    if ( FT_READ_ULONG_LE( format ) )
      goto Bail;

    if ( !PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT )    &&
         !PCF_FORMAT_MATCH( format, PCF_ACCEL_W_INKBOUNDS ) )
      goto Bail;

    if ( PCF_BYTE_ORDER( format ) == MSBFirst )
    {
      if ( FT_STREAM_READ_FIELDS( pcf_accel_msb_header, accel ) )
        goto Bail;
    }
    else
    {
      if ( FT_STREAM_READ_FIELDS( pcf_accel_header, accel ) )
        goto Bail;
    }

    error = pcf_get_metric( stream,
                            format & ( ~PCF_FORMAT_MASK ),
                            &(accel->minbounds) );
    if ( error )
      goto Bail;

    error = pcf_get_metric( stream,
                            format & ( ~PCF_FORMAT_MASK ),
                            &(accel->maxbounds) );
    if ( error )
      goto Bail;

    if ( PCF_FORMAT_MATCH( format, PCF_ACCEL_W_INKBOUNDS ) )
    {
      error = pcf_get_metric( stream,
                              format & ( ~PCF_FORMAT_MASK ),
                              &(accel->ink_minbounds) );
      if ( error )
        goto Bail;

      error = pcf_get_metric( stream,
                              format & ( ~PCF_FORMAT_MASK ),
                              &(accel->ink_maxbounds) );
      if ( error )
        goto Bail;
    }
    else
    {
      accel->ink_minbounds = accel->minbounds; /* I'm not sure about this */
      accel->ink_maxbounds = accel->maxbounds;
    }

  Bail:
    return error;
  }
Exemplo n.º 3
0
  static FT_Error
  pcf_get_metrics( FT_Stream  stream,
                   PCF_Face   face )
  {
    FT_Error    error    = PCF_Err_Ok;
    FT_Memory   memory   = FT_FACE(face)->memory;
    FT_ULong    format, size;
    PCF_Metric  metrics  = 0;
    FT_ULong    nmetrics, i;


    error = pcf_seek_to_table_type( stream,
                                    face->toc.tables,
                                    face->toc.count,
                                    PCF_METRICS,
                                    &format,
                                    &size );
    if ( error )
      return error;

    if ( FT_READ_ULONG_LE( format ) )
      goto Bail;

    if ( !PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT )     &&
         !PCF_FORMAT_MATCH( format, PCF_COMPRESSED_METRICS ) )
      return PCF_Err_Invalid_File_Format;

    if ( PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) )
    {
      if ( PCF_BYTE_ORDER( format ) == MSBFirst )
        (void)FT_READ_ULONG( nmetrics );
      else
        (void)FT_READ_ULONG_LE( nmetrics );
    }
    else
    {
      if ( PCF_BYTE_ORDER( format ) == MSBFirst )
        (void)FT_READ_USHORT( nmetrics );
      else
        (void)FT_READ_USHORT_LE( nmetrics );
    }
    if ( error )
      return PCF_Err_Invalid_File_Format;

    face->nmetrics = nmetrics;

    FT_TRACE4(( "pcf_get_metrics:\n" ));

    FT_TRACE4(( "  number of metrics: %d\n", nmetrics ));

    /* rough estimate */
    if ( PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) )
    {
      if ( nmetrics > size / PCF_METRIC_SIZE )
        return PCF_Err_Invalid_Table;
    }
    else
    {
      if ( nmetrics > size / PCF_COMPRESSED_METRIC_SIZE )
        return PCF_Err_Invalid_Table;
    }

    if ( FT_NEW_ARRAY( face->metrics, nmetrics ) )
      return PCF_Err_Out_Of_Memory;

    metrics = face->metrics;
    for ( i = 0; i < nmetrics; i++ )
    {
      error = pcf_get_metric( stream, format, metrics + i );

      metrics[i].bits = 0;

      FT_TRACE5(( "  idx %d: width=%d, "
                  "lsb=%d, rsb=%d, ascent=%d, descent=%d, swidth=%d\n",
                  i,
                  ( metrics + i )->characterWidth,
                  ( metrics + i )->leftSideBearing,
                  ( metrics + i )->rightSideBearing,
                  ( metrics + i )->ascent,
                  ( metrics + i )->descent,
                  ( metrics + i )->attributes ));

      if ( error )
        break;
    }

    if ( error )
      FT_FREE( face->metrics );

  Bail:
    return error;
  }
Exemplo n.º 4
0
  static FT_Error
  pcf_get_properties( FT_Stream  stream,
                      PCF_Face   face )
  {
    PCF_ParseProperty  props      = 0;
    PCF_Property       properties;
    FT_UInt            nprops, i;
    FT_ULong           format, size;
    FT_Error           error;
    FT_Memory          memory     = FT_FACE(face)->memory;
    FT_ULong           string_size;
    FT_String*         strings    = 0;


    error = pcf_seek_to_table_type( stream,
                                    face->toc.tables,
                                    face->toc.count,
                                    PCF_PROPERTIES,
                                    &format,
                                    &size );
    if ( error )
      goto Bail;

    if ( FT_READ_ULONG_LE( format ) )
      goto Bail;

    FT_TRACE4(( "pcf_get_properties:\n" ));

    FT_TRACE4(( "  format = %ld\n", format ));

    if ( !PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) )
      goto Bail;

    if ( PCF_BYTE_ORDER( format ) == MSBFirst )
      (void)FT_READ_ULONG( nprops );
    else
      (void)FT_READ_ULONG_LE( nprops );
    if ( error )
      goto Bail;

    FT_TRACE4(( "  nprop = %d\n", nprops ));

    /* rough estimate */
    if ( nprops > size / PCF_PROPERTY_SIZE )
    {
      error = PCF_Err_Invalid_Table;
      goto Bail;
    }

    face->nprops = nprops;

    if ( FT_NEW_ARRAY( props, nprops ) )
      goto Bail;

    for ( i = 0; i < nprops; i++ )
    {
      if ( PCF_BYTE_ORDER( format ) == MSBFirst )
      {
        if ( FT_STREAM_READ_FIELDS( pcf_property_msb_header, props + i ) )
          goto Bail;
      }
      else
      {
        if ( FT_STREAM_READ_FIELDS( pcf_property_header, props + i ) )
          goto Bail;
      }
    }

    /* pad the property array                                            */
    /*                                                                   */
    /* clever here - nprops is the same as the number of odd-units read, */
    /* as only isStringProp are odd length   (Keith Packard)             */
    /*                                                                   */
    if ( nprops & 3 )
    {
      i = 4 - ( nprops & 3 );
      if ( FT_STREAM_SKIP( i ) )
      {
        error = PCF_Err_Invalid_Stream_Skip;
        goto Bail;
      }
    }

    if ( PCF_BYTE_ORDER( format ) == MSBFirst )
      (void)FT_READ_ULONG( string_size );
    else
      (void)FT_READ_ULONG_LE( string_size );
    if ( error )
      goto Bail;

    FT_TRACE4(( "  string_size = %ld\n", string_size ));

    /* rough estimate */
    if ( string_size > size - nprops * PCF_PROPERTY_SIZE )
    {
      error = PCF_Err_Invalid_Table;
      goto Bail;
    }

    if ( FT_NEW_ARRAY( strings, string_size ) )
      goto Bail;

    error = FT_Stream_Read( stream, (FT_Byte*)strings, string_size );
    if ( error )
      goto Bail;

    if ( FT_NEW_ARRAY( properties, nprops ) )
      goto Bail;

    face->properties = properties;

    for ( i = 0; i < nprops; i++ )
    {
      FT_Long  name_offset = props[i].name;


      if ( ( name_offset < 0 )                     ||
           ( (FT_ULong)name_offset > string_size ) )
      {
        error = PCF_Err_Invalid_Offset;
        goto Bail;
      }

      if ( FT_STRDUP( properties[i].name, strings + name_offset ) )
        goto Bail;

      FT_TRACE4(( "  %s:", properties[i].name ));

      properties[i].isString = props[i].isString;

      if ( props[i].isString )
      {
        FT_Long  value_offset = props[i].value;


        if ( ( value_offset < 0 )                     ||
             ( (FT_ULong)value_offset > string_size ) )
        {
          error = PCF_Err_Invalid_Offset;
          goto Bail;
        }

        if ( FT_STRDUP( properties[i].value.atom, strings + value_offset ) )
          goto Bail;

        FT_TRACE4(( " `%s'\n", properties[i].value.atom ));
      }
      else
      {
        properties[i].value.integer = props[i].value;

        FT_TRACE4(( " %d\n", properties[i].value.integer ));
      }
    }

    error = PCF_Err_Ok;

  Bail:
    FT_FREE( props );
    FT_FREE( strings );

    return error;
  }
Exemplo n.º 5
0
  static FT_Error
  pcf_get_metrics( FT_Stream  stream,
                   PCF_Face   face )
  {
    FT_Error    error;
    FT_Memory   memory  = FT_FACE( face )->memory;
    FT_ULong    format, size;
    PCF_Metric  metrics = 0;
    FT_ULong    nmetrics, i;


    error = pcf_seek_to_table_type( stream,
                                    face->toc.tables,
                                    face->toc.count,
                                    PCF_METRICS,
                                    &format,
                                    &size );
    if ( error )
      return error;

    if ( FT_READ_ULONG_LE( format ) )
      goto Bail;

    if ( !PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT )     &&
         !PCF_FORMAT_MATCH( format, PCF_COMPRESSED_METRICS ) )
      return FT_THROW( Invalid_File_Format );

    if ( PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) )
    {
      if ( PCF_BYTE_ORDER( format ) == MSBFirst )
        (void)FT_READ_ULONG( nmetrics );
      else
        (void)FT_READ_ULONG_LE( nmetrics );
    }
    else
    {
      if ( PCF_BYTE_ORDER( format ) == MSBFirst )
        (void)FT_READ_USHORT( nmetrics );
      else
        (void)FT_READ_USHORT_LE( nmetrics );
    }
    if ( error )
      return FT_THROW( Invalid_File_Format );

    face->nmetrics = nmetrics;

    if ( !nmetrics )
      return FT_THROW( Invalid_Table );

    FT_TRACE4(( "pcf_get_metrics:\n" ));

    FT_TRACE4(( "  number of metrics: %d\n", nmetrics ));

    /* rough estimate */
    if ( PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) )
    {
      if ( nmetrics > size / PCF_METRIC_SIZE )
        return FT_THROW( Invalid_Table );
    }
    else
    {
      if ( nmetrics > size / PCF_COMPRESSED_METRIC_SIZE )
        return FT_THROW( Invalid_Table );
    }

    if ( FT_NEW_ARRAY( face->metrics, nmetrics ) )
      return FT_THROW( Out_Of_Memory );

    metrics = face->metrics;
    for ( i = 0; i < nmetrics; i++, metrics++ )
    {
      error = pcf_get_metric( stream, format, metrics );

      metrics->bits = 0;

      FT_TRACE5(( "  idx %d: width=%d, "
                  "lsb=%d, rsb=%d, ascent=%d, descent=%d, swidth=%d\n",
                  i,
                  metrics->characterWidth,
                  metrics->leftSideBearing,
                  metrics->rightSideBearing,
                  metrics->ascent,
                  metrics->descent,
                  metrics->attributes ));

      if ( error )
        break;

      /* sanity checks -- those values are used in `PCF_Glyph_Load' to     */
      /* compute a glyph's bitmap dimensions, thus setting them to zero in */
      /* case of an error disables this particular glyph only              */
      if ( metrics->rightSideBearing < metrics->leftSideBearing ||
           metrics->ascent + metrics->descent < 0               )
      {
        metrics->characterWidth   = 0;
        metrics->leftSideBearing  = 0;
        metrics->rightSideBearing = 0;
        metrics->ascent           = 0;
        metrics->descent          = 0;

        FT_TRACE0(( "pcf_get_metrics:"
                    " invalid metrics for glyph %d\n", i ));
      }
    }

    if ( error )
      FT_FREE( face->metrics );

  Bail:
    return error;
  }
Exemplo n.º 6
0
  static FT_Error
  pcf_get_metrics( FT_Stream  stream,
                   PCF_Face   face )
  {
    FT_Error    error    = PCF_Err_Ok;
    FT_Memory   memory   = FT_FACE(face)->memory;
    FT_ULong    format   = 0;
    FT_ULong    size     = 0;
    PCF_Metric  metrics  = 0;
    int         i;
    int         nmetrics = -1;


    error = pcf_seek_to_table_type( stream,
                                    face->toc.tables,
                                    face->toc.count,
                                    PCF_METRICS,
                                    &format,
                                    &size );
    if ( error )
      return error;

    error = FT_READ_ULONG_LE( format );

    if ( !PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT )     &&
         !PCF_FORMAT_MATCH( format, PCF_COMPRESSED_METRICS ) )
      return PCF_Err_Invalid_File_Format;

    if ( PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) )
    {
      if ( PCF_BYTE_ORDER( format ) == MSBFirst )
        (void)FT_READ_ULONG( nmetrics );
      else
        (void)FT_READ_ULONG_LE( nmetrics );
    }
    else
    {
      if ( PCF_BYTE_ORDER( format ) == MSBFirst )
        (void)FT_READ_USHORT( nmetrics );
      else
        (void)FT_READ_USHORT_LE( nmetrics );
    }
    if ( error || nmetrics == -1 )
      return PCF_Err_Invalid_File_Format;

    face->nmetrics = nmetrics;

    if ( FT_NEW_ARRAY( face->metrics, nmetrics ) )
      return PCF_Err_Out_Of_Memory;

    metrics = face->metrics;
    for ( i = 0; i < nmetrics; i++ )
    {
      pcf_get_metric( stream, format, metrics + i );

      metrics[i].bits = 0;

      FT_TRACE4(( "%d : width=%d, "
                  "lsb=%d, rsb=%d, ascent=%d, descent=%d, swidth=%d\n",
                  i,
                  ( metrics + i )->characterWidth,
                  ( metrics + i )->leftSideBearing,
                  ( metrics + i )->rightSideBearing,
                  ( metrics + i )->ascent,
                  ( metrics + i )->descent,
                  ( metrics + i )->attributes ));

      if ( error )
        break;
    }

    if ( error )
      FT_FREE( face->metrics );
    return error;
  }
Exemplo n.º 7
0
  static FT_Error
  pcf_get_properties( FT_Stream  stream,
                      PCF_Face   face )
  {
    PCF_ParseProperty  props      = 0;
    PCF_Property       properties = 0;
    FT_Int             nprops, i;
    FT_ULong           format, size;
    FT_Error           error;
    FT_Memory          memory     = FT_FACE(face)->memory;
    FT_ULong           string_size;
    FT_String*         strings    = 0;


    error = pcf_seek_to_table_type( stream,
                                    face->toc.tables,
                                    face->toc.count,
                                    PCF_PROPERTIES,
                                    &format,
                                    &size );
    if ( error )
      goto Bail;

    if ( FT_READ_ULONG_LE( format ) )
      goto Bail;

    FT_TRACE4(( "get_prop: format = %ld\n", format ));

    if ( !PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) )
      goto Bail;

    if ( PCF_BYTE_ORDER( format ) == MSBFirst )
      (void)FT_READ_ULONG( nprops );
    else
      (void)FT_READ_ULONG_LE( nprops );
    if ( error )
      goto Bail;

    FT_TRACE4(( "get_prop: nprop = %d\n", nprops ));

    if ( FT_NEW_ARRAY( props, nprops ) )
      goto Bail;

    for ( i = 0; i < nprops; i++ )
    {
      if ( PCF_BYTE_ORDER( format ) == MSBFirst )
      {
        if ( FT_STREAM_READ_FIELDS( pcf_property_msb_header, props + i ) )
          goto Bail;
      }
      else
      {
        if ( FT_STREAM_READ_FIELDS( pcf_property_header, props + i ) )
          goto Bail;
      }
    }

    /* pad the property array                                            */
    /*                                                                   */
    /* clever here - nprops is the same as the number of odd-units read, */
    /* as only isStringProp are odd length   (Keith Packard)             */
    /*                                                                   */
    if ( nprops & 3 )
    {
      i = 4 - ( nprops & 3 );
      FT_Stream_Skip( stream, i );
    }

    if ( PCF_BYTE_ORDER( format ) == MSBFirst )
      (void)FT_READ_ULONG( string_size );
    else
      (void)FT_READ_ULONG_LE( string_size );
    if ( error )
      goto Bail;

    FT_TRACE4(( "get_prop: string_size = %ld\n", string_size ));

    if ( FT_NEW_ARRAY( strings, string_size ) )
      goto Bail;

    error = FT_Stream_Read( stream, (FT_Byte*)strings, string_size );
    if ( error )
      goto Bail;

    if ( FT_NEW_ARRAY( properties, nprops ) )
      goto Bail;

    for ( i = 0; i < nprops; i++ )
    {
      /* XXX: make atom */
      if ( FT_NEW_ARRAY( properties[i].name,
                         ft_strlen( strings + props[i].name ) + 1 ) )
        goto Bail;
      ft_strcpy( properties[i].name,strings + props[i].name );

      properties[i].isString = props[i].isString;

      if ( props[i].isString )
      {
        if ( FT_NEW_ARRAY( properties[i].value.atom,
                           ft_strlen( strings + props[i].value ) + 1 ) )
          goto Bail;
        ft_strcpy( properties[i].value.atom, strings + props[i].value );
      }
      else
        properties[i].value.integer = props[i].value;
    }

    face->properties = properties;
    face->nprops = nprops;

    FT_FREE( props );
    FT_FREE( strings );

    return PCF_Err_Ok;

  Bail:
    FT_FREE( props );
    FT_FREE( strings );

    return error;
  }