public static bool Load(int version, FontParser parser, FontFace font)
{
// Load the V1/V2 header:
ushort numTables;
LoadHeader(version, parser, out numTables);
if (version == 1)
{
MemoryStream ms = new MemoryStream(parser.Data);
// Get the ZLIB compression helper:
Compressor zLib = Compression.Get("zlib");
// Read each table next.
for (int i = 0; i < numTables; i++)
{
string tag = parser.ReadTag();
uint offset = parser.ReadUInt32();
uint compLength = parser.ReadUInt32();
uint origLength = parser.ReadUInt32();
parser.ReadUInt32(); // origChecksum
// Cache position:
int pos = parser.Position;
if (compLength != origLength)
{
// Decompress the table now (zlib)
// Seek to table:
ms.Position = (int)offset;
// Decompressed data:
byte[] decompressedTable = new byte[(int)origLength];
// Decompress now into our target bytes:
zLib.Decompress(ms, decompressedTable);
}
else
{
// Ordinary table.
parser.HandleTable(tag, (int)offset, font);
}
// Restore position:
parser.Position = pos;
}
}
else if (version == 2)
{
// Read each table entry next. The data here is compressed as one single block after the table meta.
Woff2Table[] tableHeaders = new Woff2Table[numTables];
int offset = 0;
for (int i = 0; i < numTables; i++)
{
// Read the table entry:
byte flags = parser.ReadByte();
string tag;
int tagFlag = (flags & 63);
if (tagFlag == 63)
{
tag = parser.ReadTag();
}
else
{
tag = TagLookup[tagFlag];
}
ulong origLength = parser.ReadBase128();
ulong transformLength = 0;
int transformVersion = (flags >> 6); //0-3
if (tag == "glyf" || tag == "loca")
{
// transform length:
transformLength = parser.ReadBase128();
}
offset += (int)origLength;
tableHeaders[i] = new Woff2Table(tag, offset, (int)transformLength, transformVersion);
}
}
// All ok:
return(true);
}