private static ByteSegment[] LoadIndexData(FontSource p)
{
var count = p.ReadUShort();
if (count <= 0)
{
return(null);
}
var offSize = p.ReadByte();
var offsets = new uint[count + 1];
for (var i = 0; i < offsets.Length; i++)
{
offsets[i] = p.ReadUInt(offSize);
}
var segments = new ByteSegment[count];
for (var i = 0; i < offsets.Length - 1; i++)
{
segments[i] = new ByteSegment(p.Offset + offsets[i] - 1, offsets[i + 1] - offsets[i]);
}
p.Offset += offsets[offsets.Length - 1] - 1;
return(segments);
}
public static OffsetTable Load(FontSource data)
{
var sfntVersion = data.ReadUInt();
var numTables = data.ReadUShort();
// Skip search range
// Skip entry selector
// Skip range shift
data.Offset += 6;
return(new OffsetTable(numTables, sfntVersion));
}
public static TableRecord Load(FontSource data)
{
var tag = data.ReadTag().Trim();
// Skip check sum
data.Offset += 4;
var offset = data.ReadUInt();
// Skip length
data.Offset += 4;
return(new TableRecord(tag, offset));
}
public static EncodingRecord Load(FontSource source, uint tableOffset)
{
var platformID = source.ReadUShort();
var encodingID = source.ReadUShort();
var encodingRecordOffset = source.ReadUInt();
var offset = source.Offset;
source.Offset = tableOffset + encodingRecordOffset;
var subTableFormat = source.ReadUShort();
source.Offset = offset;
return(new EncodingRecord(platformID, encodingID, encodingRecordOffset, subTableFormat));
}