mirror of https://github.com/freetype/freetype
The code has been updated to use the finite-state
table loader in "ftstream" (when the macro READ_FIELDS) is defined. This is experimental..
This commit is contained in:
David Turner
parent
33263421f8
commit
a56489e01f
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@ -32,6 +32,8 @@
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#undef FT_COMPONENT
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#define FT_COMPONENT trace_ttload
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#define READ_FIELDS
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/*************************************************************************/
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/* */
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@ -145,6 +147,14 @@
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{
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TT_Error error;
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FT_Memory memory = stream->memory;
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#ifdef READ_FIELDS
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const FT_Frame_Field ttc_header_fields[] = {
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{ ft_frame_start, 0, 8 }, /* frame of 8 bytes */
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FT_FRAME_LONG( TTC_Header, version ),
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FT_FRAME_LONG( TTC_Header, DirCount ),
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{ ft_frame_end, 0, 0 } };
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#endif
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FT_TRACE2(( "TT_Load_Format_Tag(%08lx, %ld )\n",
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(TT_Long)face, faceIndex ));
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@ -169,12 +179,17 @@
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/* it's a TrueType collection, i.e. a file containing several */
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/* font files. Read the font directory now */
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/* */
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#ifdef READ_FIELDS
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if ( READ_Fields( ttc_header_fields, &face->ttc_header ) )
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goto Exit;
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#else
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if ( ACCESS_Frame( 8 ) ) goto Exit;
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face->ttc_header.version = GET_Long();
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face->ttc_header.DirCount = GET_Long();
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FORGET_Frame();
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#endif
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/* now read the offsets of each font in the file */
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/* */
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@ -238,6 +253,15 @@
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{
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TT_Error error;
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FT_Memory memory = stream->memory;
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#ifdef READ_FIELDS
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const FT_Frame_Field table_dir_fields[] = {
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{ ft_frame_start, 0, 8 },
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FT_FRAME_USHORT( TT_TableDir, numTables ),
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FT_FRAME_USHORT( TT_TableDir, searchRange ),
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FT_FRAME_USHORT( TT_TableDir, entrySelector ),
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FT_FRAME_USHORT( TT_TableDir, rangeShift ),
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{ ft_frame_end, 0 , 0 } };
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#endif
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TT_TableDir tableDir;
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@ -247,6 +271,10 @@
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FT_TRACE2(( "TT_Load_Directory( %08lx, %ld )\n",
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(TT_Long)face, faceIndex ));
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#ifdef READ_FIELDS
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if ( READ_Fields( table_dir_fields, &tableDir ) )
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goto Exit;
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#else
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if ( ACCESS_Frame( 8L ) ) goto Exit;
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tableDir.numTables = GET_UShort();
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@ -255,6 +283,7 @@
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tableDir.rangeShift = GET_UShort();
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FORGET_Frame();
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#endif
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FT_TRACE2(( "-- Tables count : %12u\n", tableDir.numTables ));
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FT_TRACE2(( "-- Format version : %08lx\n", tableDir.version ));
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@ -407,7 +436,30 @@
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{
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TT_Error error;
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TT_Header* header;
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#ifdef READ_FIELDS
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const FT_Frame_Field header_fields[] = {
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{ ft_frame_start, 0, 54 },
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FT_FRAME_ULONG( TT_Header, Table_Version ),
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FT_FRAME_ULONG( TT_Header, Font_Revision ),
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FT_FRAME_LONG( TT_Header, CheckSum_Adjust ),
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FT_FRAME_LONG( TT_Header, Magic_Number ),
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FT_FRAME_USHORT( TT_Header, Flags ),
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FT_FRAME_USHORT( TT_Header, Units_Per_EM ),
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FT_FRAME_LONG( TT_Header, Created[0] ),
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FT_FRAME_LONG( TT_Header, Created[1] ),
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FT_FRAME_LONG( TT_Header, Modified[0] ),
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FT_FRAME_LONG( TT_Header, Modified[1] ),
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FT_FRAME_SHORT( TT_Header, xMin ),
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FT_FRAME_SHORT( TT_Header, yMin ),
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FT_FRAME_SHORT( TT_Header, xMax ),
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FT_FRAME_SHORT( TT_Header, yMax ),
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FT_FRAME_USHORT( TT_Header, Mac_Style ),
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FT_FRAME_USHORT( TT_Header, Lowest_Rec_PPEM ),
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FT_FRAME_SHORT( TT_Header, Font_Direction ),
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FT_FRAME_SHORT( TT_Header, Index_To_Loc_Format ),
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FT_FRAME_SHORT( TT_Header, Glyph_Data_Format ),
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{ ft_frame_end } };
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#endif
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FT_TRACE2(( "Load_TT_Header( %08lx )\n", (TT_Long)face ));
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@ -418,11 +470,14 @@
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goto Exit;
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}
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header = &face->header;
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#ifdef READ_FIELDS
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if ( READ_Fields( header_fields, header ) ) goto Exit;
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#else
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if ( ACCESS_Frame( 54L ) )
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goto Exit;
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header = &face->header;
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header->Table_Version = GET_ULong();
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header->Font_Revision = GET_ULong();
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@ -450,7 +505,7 @@
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header->Glyph_Data_Format = GET_Short();
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FORGET_Frame();
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#endif
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FT_TRACE2(( " Units per EM : %8u\n", header->Units_Per_EM ));
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FT_TRACE2(( " IndexToLoc : %8d\n", header->Index_To_Loc_Format ));
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FT_TRACE2(( "Font Header Loaded.\n" ));
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@ -481,13 +536,35 @@
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{
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TT_Error error;
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TT_MaxProfile* maxProfile = &face->max_profile;
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#ifdef READ_FIELDS
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const FT_Frame_Field maxp_fields[] = {
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{ ft_frame_start, 0, 32 },
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FT_FRAME_ULONG( TT_MaxProfile, version ),
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FT_FRAME_USHORT( TT_MaxProfile, numGlyphs ),
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FT_FRAME_USHORT( TT_MaxProfile, maxPoints ),
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FT_FRAME_USHORT( TT_MaxProfile, maxContours ),
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FT_FRAME_USHORT( TT_MaxProfile, maxCompositePoints ),
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FT_FRAME_USHORT( TT_MaxProfile, maxCompositeContours ),
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FT_FRAME_USHORT( TT_MaxProfile, maxZones ),
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FT_FRAME_USHORT( TT_MaxProfile, maxTwilightPoints ),
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FT_FRAME_USHORT( TT_MaxProfile, maxStorage ),
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FT_FRAME_USHORT( TT_MaxProfile, maxFunctionDefs ),
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FT_FRAME_USHORT( TT_MaxProfile, maxInstructionDefs ),
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FT_FRAME_USHORT( TT_MaxProfile, maxStackElements ),
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FT_FRAME_USHORT( TT_MaxProfile, maxSizeOfInstructions ),
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FT_FRAME_USHORT( TT_MaxProfile, maxComponentElements ),
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FT_FRAME_USHORT( TT_MaxProfile, maxComponentDepth ),
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{ ft_frame_end } };
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#endif
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FT_TRACE2(( "Load_TT_MaxProfile( %08lx )\n", (TT_Long)face ));
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error = face->goto_table( face, TTAG_maxp, stream, 0 );
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if (error) goto Exit;
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#ifdef READ_FIELDS
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if ( READ_Fields( maxp_fields, maxProfile ) ) goto Exit;
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#else
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if ( ACCESS_Frame( 32L ) )
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goto Exit;
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@ -512,6 +589,7 @@
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maxProfile->maxComponentDepth = GET_UShort();
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FORGET_Frame();
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#endif
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/* XXX: an adjustment that is necessary to load certain */
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/* broken fonts like `Keystrokes MT' :-( */
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@ -704,7 +782,28 @@
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{
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TT_Error error;
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TT_HoriHeader* header;
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#ifdef READ_FIELDS
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const FT_Frame_Field metrics_header_fields[] = {
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{ ft_frame_start, 0, 36 },
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FT_FRAME_ULONG( TT_HoriHeader, Version ),
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FT_FRAME_SHORT( TT_HoriHeader, Ascender ),
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FT_FRAME_SHORT( TT_HoriHeader, Descender ),
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FT_FRAME_SHORT( TT_HoriHeader, Line_Gap ),
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FT_FRAME_USHORT( TT_HoriHeader, advance_Width_Max ),
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FT_FRAME_SHORT( TT_HoriHeader, min_Left_Side_Bearing ),
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FT_FRAME_SHORT( TT_HoriHeader, min_Right_Side_Bearing ),
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FT_FRAME_SHORT( TT_HoriHeader, xMax_Extent ),
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FT_FRAME_SHORT( TT_HoriHeader, caret_Slope_Rise ),
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FT_FRAME_SHORT( TT_HoriHeader, caret_Slope_Run ),
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FT_FRAME_SHORT( TT_HoriHeader, Reserved[0] ),
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FT_FRAME_SHORT( TT_HoriHeader, Reserved[1] ),
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FT_FRAME_SHORT( TT_HoriHeader, Reserved[2] ),
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FT_FRAME_SHORT( TT_HoriHeader, Reserved[3] ),
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FT_FRAME_SHORT( TT_HoriHeader, Reserved[4] ),
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FT_FRAME_SHORT( TT_HoriHeader, metric_Data_Format ),
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FT_FRAME_USHORT( TT_HoriHeader, number_Of_HMetrics ),
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{ ft_frame_end } };
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#endif
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FT_TRACE2(( vertical ? "Vertical header " : "Horizontal header " ));
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if ( vertical )
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header = &face->horizontal;
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}
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#ifdef READ_FIELDS
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if ( READ_Fields( metrics_header_fields, header ) ) goto Exit;
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#else
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if ( ACCESS_Frame( 36L ) )
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goto Exit;
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@ -764,6 +866,7 @@
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header->number_Of_HMetrics = GET_UShort();
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FORGET_Frame();
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#endif
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header->long_metrics = NULL;
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header->short_metrics = NULL;
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@ -803,6 +906,23 @@
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TT_ULong storageSize;
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TT_NameTable* names;
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#ifdef READ_FIELDS
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const FT_Frame_Field name_table_fields[] = {
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{ ft_frame_start, 0, 6 },
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FT_FRAME_USHORT( TT_NameTable, format ),
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FT_FRAME_USHORT( TT_NameTable, numNameRecords ),
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FT_FRAME_USHORT( TT_NameTable, storageOffset ),
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{ ft_frame_end } };
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const FT_Frame_Field name_record_fields[] = {
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FT_FRAME_USHORT( TT_NameRec, platformID ),
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FT_FRAME_USHORT( TT_NameRec, encodingID ),
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FT_FRAME_USHORT( TT_NameRec, languageID ),
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FT_FRAME_USHORT( TT_NameRec, nameID ),
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FT_FRAME_USHORT( TT_NameRec, stringLength ),
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FT_FRAME_USHORT( TT_NameRec, stringOffset ),
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{ ft_frame_end } };
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#endif
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FT_TRACE2(( "Names " ));
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@ -818,17 +938,21 @@
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table_pos = FILE_Pos();
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names = &face->name_table;
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#ifdef READ_FIELDS
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if ( READ_Fields( name_table_fields, names ) ) goto Exit;
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#else
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if ( ACCESS_Frame( 6L ) )
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goto Exit;
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names = &face->name_table;
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/* Load the initial names data. */
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names->format = GET_UShort();
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names->numNameRecords = GET_UShort();
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names->storageOffset = GET_UShort();
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FORGET_Frame();
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#endif
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/* Allocate the array of name records. */
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if ( ALLOC_ARRAY( names->names,
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@ -849,13 +973,16 @@
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{
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TT_ULong upper;
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#ifdef READ_FIELDS
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(void)READ_Fields( name_record_fields, cur );
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#else
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cur->platformID = GET_UShort();
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cur->encodingID = GET_UShort();
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cur->languageID = GET_UShort();
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cur->nameID = GET_UShort();
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cur->stringLength = GET_UShort();
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cur->stringOffset = GET_UShort();
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#endif
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upper = (TT_ULong)(cur->stringOffset + cur->stringLength);
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if ( upper > storageSize ) storageSize = upper;
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}
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@ -970,9 +1097,24 @@
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{
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TT_Error error;
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FT_Memory memory = stream->memory;
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TT_Long off, cur_off, table_start;
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TT_Long table_start;
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TT_CMapDir cmap_dir;
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#ifdef READ_FIELDS
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const FT_Frame_Field cmap_fields[] = {
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{ ft_frame_start, 0, 4 },
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FT_FRAME_USHORT( TT_CMapDir, tableVersionNumber ),
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FT_FRAME_USHORT( TT_CMapDir, numCMaps ),
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{ ft_frame_end } };
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const FT_Frame_Field cmap_rec_fields[] = {
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{ ft_frame_start, 0, 6 },
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FT_FRAME_USHORT( TT_CMapTable, format ),
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FT_FRAME_USHORT( TT_CMapTable, length ),
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FT_FRAME_USHORT( TT_CMapTable, version ),
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{ ft_frame_end } };
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#endif
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FT_TRACE2(( "CMaps " ));
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error = face->goto_table( face, TTAG_cmap, stream, 0 );
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@ -984,6 +1126,9 @@
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table_start = FILE_Pos();
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#ifdef READ_FIELDS
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if ( READ_Fields( cmap_fields, &cmap_dir ) ) goto Exit;
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#else
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if ( ACCESS_Frame( 4L ) ) /* 4 bytes cmap header */
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goto Exit;
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@ -991,8 +1136,7 @@
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cmap_dir.numCMaps = GET_UShort();
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FORGET_Frame();
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off = FILE_Pos(); /* save offset to cmapdir[] which follows */
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#endif
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/* save space in face table for cmap tables */
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if ( ALLOC_ARRAY( face->charmaps,
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@ -1005,6 +1149,8 @@
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TT_CharMap charmap = face->charmaps;
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TT_CharMap limit = charmap + face->num_charmaps;
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/* read the header of each charmap first */
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if ( ACCESS_Frame( face->num_charmaps*8L ) ) goto Exit;
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for ( ; charmap < limit; charmap++ )
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{
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TT_CMapTable* cmap;
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@ -1012,30 +1158,33 @@
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charmap->root.face = (FT_Face)face;
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cmap = &charmap->cmap;
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if ( FILE_Seek( off ) ||
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ACCESS_Frame( 8L ) )
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goto Exit;
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cmap->loaded = FALSE;
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cmap->platformID = GET_UShort();
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cmap->platformEncodingID = GET_UShort();
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cur_off = GET_Long();
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FORGET_Frame();
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off = FILE_Pos();
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if ( FILE_Seek( table_start + cur_off ) ||
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ACCESS_Frame( 6L ) )
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cmap->offset = (TT_ULong)GET_Long();
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}
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FORGET_Frame();
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/* now read the rest of each table */
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for ( charmap = face->charmaps; charmap < limit; charmap++ )
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{
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TT_CMapTable* cmap = &charmap->cmap;
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#ifdef READ_FIELDS
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if ( FILE_Seek( table_start + (TT_Long)cmap->offset ) ||
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READ_Fields( cmap_rec_fields, cmap ) )
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goto Exit;
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#else
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if ( FILE_Seek( table_start + (TT_Long)cmap->offset ) ||
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ACCESS_Frame(6L) )
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goto Exit;
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cmap->format = GET_UShort();
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cmap->length = GET_UShort();
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cmap->version = GET_UShort();
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FORGET_Frame();
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#endif
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cmap->offset = FILE_Pos();
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}
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}
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@ -1066,8 +1215,63 @@
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FT_Stream stream )
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{
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TT_Error error;
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TT_Int j;
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TT_OS2* os2;
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#ifdef READ_FIELDS
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const FT_Frame_Field os2_fields[] = {
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{ ft_frame_start, 0, 78 },
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FT_FRAME_USHORT( TT_OS2, version ),
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FT_FRAME_SHORT( TT_OS2, xAvgCharWidth ),
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FT_FRAME_USHORT( TT_OS2, usWeightClass ),
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FT_FRAME_USHORT( TT_OS2, usWidthClass ),
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FT_FRAME_SHORT( TT_OS2, fsType ),
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FT_FRAME_SHORT( TT_OS2, ySubscriptXSize ),
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FT_FRAME_SHORT( TT_OS2, ySubscriptYSize ),
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FT_FRAME_SHORT( TT_OS2, ySubscriptXOffset ),
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FT_FRAME_SHORT( TT_OS2, ySubscriptYOffset ),
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FT_FRAME_SHORT( TT_OS2, ySuperscriptXSize ),
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FT_FRAME_SHORT( TT_OS2, ySuperscriptYSize ),
|
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FT_FRAME_SHORT( TT_OS2, ySuperscriptXOffset ),
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FT_FRAME_SHORT( TT_OS2, ySuperscriptYOffset ),
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FT_FRAME_SHORT( TT_OS2, yStrikeoutSize ),
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FT_FRAME_SHORT( TT_OS2, yStrikeoutPosition ),
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FT_FRAME_SHORT( TT_OS2, sFamilyClass ),
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FT_FRAME_BYTE( TT_OS2, panose[0] ),
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FT_FRAME_BYTE( TT_OS2, panose[1] ),
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FT_FRAME_BYTE( TT_OS2, panose[2] ),
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FT_FRAME_BYTE( TT_OS2, panose[3] ),
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FT_FRAME_BYTE( TT_OS2, panose[4] ),
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FT_FRAME_BYTE( TT_OS2, panose[5] ),
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FT_FRAME_BYTE( TT_OS2, panose[6] ),
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FT_FRAME_BYTE( TT_OS2, panose[7] ),
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FT_FRAME_BYTE( TT_OS2, panose[8] ),
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FT_FRAME_BYTE( TT_OS2, panose[9] ),
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FT_FRAME_ULONG( TT_OS2, ulUnicodeRange1 ),
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FT_FRAME_ULONG( TT_OS2, ulUnicodeRange2 ),
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FT_FRAME_ULONG( TT_OS2, ulUnicodeRange3 ),
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FT_FRAME_ULONG( TT_OS2, ulUnicodeRange4 ),
|
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FT_FRAME_BYTE( TT_OS2, achVendID[0] ),
|
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FT_FRAME_BYTE( TT_OS2, achVendID[1] ),
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FT_FRAME_BYTE( TT_OS2, achVendID[2] ),
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FT_FRAME_BYTE( TT_OS2, achVendID[3] ),
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||||
|
||||
FT_FRAME_USHORT( TT_OS2, fsSelection ),
|
||||
FT_FRAME_USHORT( TT_OS2, usFirstCharIndex ),
|
||||
FT_FRAME_USHORT( TT_OS2, usLastCharIndex ),
|
||||
FT_FRAME_SHORT( TT_OS2, sTypoAscender ),
|
||||
FT_FRAME_SHORT( TT_OS2, sTypoDescender ),
|
||||
FT_FRAME_SHORT( TT_OS2, sTypoLineGap ),
|
||||
FT_FRAME_USHORT( TT_OS2, usWinAscent ),
|
||||
FT_FRAME_USHORT( TT_OS2, usWinDescent ),
|
||||
{ ft_frame_end } };
|
||||
|
||||
const FT_Frame_Field os2_fields_extra[] = {
|
||||
{ ft_frame_start, 0, 8 },
|
||||
FT_FRAME_ULONG( TT_OS2, ulCodePageRange1 ),
|
||||
FT_FRAME_ULONG( TT_OS2, ulCodePageRange2 ),
|
||||
{ ft_frame_end } };
|
||||
#else
|
||||
TT_Int j;
|
||||
#endif
|
||||
|
||||
|
||||
FT_TRACE2(( "OS/2 Table " ));
|
||||
|
|
@ -1084,11 +1288,14 @@
|
|||
goto Exit;
|
||||
}
|
||||
|
||||
os2 = &face->os2;
|
||||
|
||||
#ifdef READ_FIELDS
|
||||
if ( READ_Fields( os2_fields, os2 ) ) goto Exit;
|
||||
#else
|
||||
if ( ACCESS_Frame( 78L ) )
|
||||
goto Exit;
|
||||
|
||||
os2 = &face->os2;
|
||||
|
||||
os2->version = GET_UShort();
|
||||
os2->xAvgCharWidth = GET_Short();
|
||||
os2->usWeightClass = GET_UShort();
|
||||
|
|
@ -1127,6 +1334,7 @@
|
|||
os2->usWinDescent = GET_UShort();
|
||||
|
||||
FORGET_Frame();
|
||||
#endif
|
||||
|
||||
os2->ulCodePageRange1 = 0;
|
||||
os2->ulCodePageRange2 = 0;
|
||||
|
|
@ -1134,7 +1342,9 @@
|
|||
if ( os2->version >= 0x0001 )
|
||||
{
|
||||
/* only version 1 tables */
|
||||
|
||||
#ifdef READ_FIELDS
|
||||
if ( READ_Fields( os2_fields_extra, os2 ) ) goto Exit;
|
||||
#else
|
||||
if ( ACCESS_Frame( 8L ) ) /* read into frame */
|
||||
goto Exit;
|
||||
|
||||
|
|
@ -1142,6 +1352,7 @@
|
|||
os2->ulCodePageRange2 = GET_ULong();
|
||||
|
||||
FORGET_Frame();
|
||||
#endif
|
||||
}
|
||||
|
||||
FT_TRACE2(( "loaded\n" ));
|
||||
|
|
@ -1172,6 +1383,20 @@
|
|||
{
|
||||
TT_Error error;
|
||||
TT_Postscript* post = &face->postscript;
|
||||
#ifdef READ_FIELDS
|
||||
const FT_Frame_Field post_fields[] = {
|
||||
{ ft_frame_start, 0, 32 },
|
||||
FT_FRAME_ULONG( TT_Postscript, FormatType ),
|
||||
FT_FRAME_ULONG( TT_Postscript, italicAngle ),
|
||||
FT_FRAME_SHORT( TT_Postscript, underlinePosition ),
|
||||
FT_FRAME_SHORT( TT_Postscript, underlineThickness ),
|
||||
FT_FRAME_ULONG( TT_Postscript, isFixedPitch ),
|
||||
FT_FRAME_ULONG( TT_Postscript, minMemType42 ),
|
||||
FT_FRAME_ULONG( TT_Postscript, maxMemType42 ),
|
||||
FT_FRAME_ULONG( TT_Postscript, minMemType1 ),
|
||||
FT_FRAME_ULONG( TT_Postscript, maxMemType1 ),
|
||||
{ ft_frame_end } };
|
||||
#endif
|
||||
|
||||
FT_TRACE2(( "PostScript " ));
|
||||
|
||||
|
|
@ -1179,6 +1404,9 @@
|
|||
if (error)
|
||||
return TT_Err_Post_Table_Missing;
|
||||
|
||||
#ifdef READ_FIELDS
|
||||
if ( READ_Fields( post_fields, post ) ) return error;
|
||||
#else
|
||||
if ( ACCESS_Frame( 32L ) )
|
||||
return error;
|
||||
|
||||
|
|
@ -1195,7 +1423,7 @@
|
|||
post->maxMemType1 = GET_ULong();
|
||||
|
||||
FORGET_Frame();
|
||||
|
||||
#endif
|
||||
/* we don't load the glyph names, we do that in another */
|
||||
/* module (ttpost). */
|
||||
FT_TRACE2(( "loaded\n" ));
|
||||
|
|
|
|||
Loading…
Reference in New Issue