internal static GPosTable Load(BigEndianBinaryReader reader)
{
// GPOS Header, Version 1.0
// +----------+-------------------+-----------------------------------------------------------+
// | Type | Name | Description |
// +==========+===================+===========================================================+
// | uint16 | majorVersion | Major version of the GPOS table, = 1 |
// +----------+-------------------+-----------------------------------------------------------+
// | uint16 | minorVersion | Minor version of the GPOS table, = 0 |
// +----------+-------------------+-----------------------------------------------------------+
// | Offset16 | scriptListOffset | Offset to ScriptList table, from beginning of GPOS table |
// +----------+-------------------+-----------------------------------------------------------+
// | Offset16 | featureListOffset | Offset to FeatureList table, from beginning of GPOS table |
// +----------+-------------------+-----------------------------------------------------------+
// | Offset16 | lookupListOffset | Offset to LookupList table, from beginning of GPOS table |
// +----------+-------------------+-----------------------------------------------------------+
// GPOS Header, Version 1.1
// +----------+-------------------------+-------------------------------------------------------------------------------+
// | Type | Name | Description |
// +==========+=========================+===============================================================================+
// | uint16 | majorVersion | Major version of the GPOS table, = 1 |
// +----------+-------------------------+-------------------------------------------------------------------------------+
// | uint16 | minorVersion | Minor version of the GPOS table, = 1 |
// +----------+-------------------------+-------------------------------------------------------------------------------+
// | Offset16 | scriptListOffset | Offset to ScriptList table, from beginning of GPOS table |
// +----------+-------------------------+-------------------------------------------------------------------------------+
// | Offset16 | featureListOffset | Offset to FeatureList table, from beginning of GPOS table |
// +----------+-------------------------+-------------------------------------------------------------------------------+
// | Offset16 | lookupListOffset | Offset to LookupList table, from beginning of GPOS table |
// +----------+-------------------------+-------------------------------------------------------------------------------+
// | Offset32 | featureVariationsOffset | Offset to FeatureVariations table, from beginning of GPOS table (may be NULL) |
// +----------+-------------------------+-------------------------------------------------------------------------------+
ushort majorVersion = reader.ReadUInt16();
ushort minorVersion = reader.ReadUInt16();
ushort scriptListOffset = reader.ReadOffset16();
ushort featureListOffset = reader.ReadOffset16();
ushort lookupListOffset = reader.ReadOffset16();
uint featureVariationsOffset = (minorVersion == 1) ? reader.ReadOffset32() : 0;
// TODO: Optimization. Allow only reading the scriptList.
var scriptList = ScriptList.Load(reader, scriptListOffset);
var featureList = FeatureListTable.Load(reader, featureListOffset);
var lookupList = LookupListTable.Load(reader, lookupListOffset);
// TODO: Feature Variations.
return(new GPosTable(scriptList, featureList, lookupList));
}
public GPosTable(ScriptList scriptList, FeatureListTable featureList, LookupListTable lookupList)
{
this.ScriptList = scriptList;
this.FeatureList = featureList;
this.LookupList = lookupList;
}