public static Format4CMapTable Load(TrueTypeDataBytes data, int platformId, int encodingId)
{
// Length in bytes.
var length = data.ReadUnsignedShort();
// Used for sub-tables with a Macintosh platform ID.
var version = data.ReadUnsignedShort();
var doubleSegmentCount = data.ReadUnsignedShort();
// Defines the number of contiguous segments.
var segmentCount = doubleSegmentCount / 2;
// Some crazy sum.
var searchRange = data.ReadUnsignedShort();
var entrySelector = data.ReadUnsignedShort();
var rangeShift = data.ReadUnsignedShort();
// End character codes for each segment.
var endCounts = data.ReadUnsignedShortArray(segmentCount);
// Should be zero.
var reservedPad = data.ReadUnsignedShort();
// Start character codes for each segment.
var startCounts = data.ReadUnsignedShortArray(segmentCount);
// Delta for all character codes in the segment. Contrary to the spec this is actually a short[].
var idDeltas = data.ReadShortArray(segmentCount);
var idRangeOffsets = data.ReadUnsignedShortArray(segmentCount);
const int singleIntsRead = 8;
const int intArraysRead = 8;
// ReSharper disable once ArrangeRedundantParentheses
var remainingBytes = length - ((singleIntsRead * 2) + intArraysRead * segmentCount);
var remainingInts = remainingBytes / 2;
var glyphIndices = data.ReadUnsignedShortArray(remainingInts);
var segments = new Segment[endCounts.Length];
for (int i = 0; i < endCounts.Length; i++)
{
var start = startCounts[i];
var end = endCounts[i];
var delta = idDeltas[i];
var offsets = idRangeOffsets[i];
segments[i] = new Segment(start, end, delta, offsets);
}
return(new Format4CMapTable(platformId, encodingId, version, segments, glyphIndices));
}