public static SequentialMapGroup[] ReadArray(BinaryReaderFont reader, uint count)
{
SequentialMapGroup[] array = new SequentialMapGroup[count];
for (int i = 0; i < count; i++)
{
array[i] = Read(reader);
}
return(array);
}
public static new CmapSubtable8 Read(BinaryReaderFont reader)
{
CmapSubtable8 value = new CmapSubtable8 {
format = reader.ReadUInt16(),
reserved = reader.ReadUInt16(),
length = reader.ReadUInt32(),
language = reader.ReadUInt32(),
is32 = reader.ReadBytes(8192),
numGroups = reader.ReadUInt32()
};
value.groups = SequentialMapGroup.ReadArray(reader, value.numGroups);
return(value);
}
public override CharToGlyphTable CreateCharToGlyphTable()
{
CharToGlyphTable table = new CharToGlyphTable();
for (int i = 0; i < numGroups; i++)
{
SequentialMapGroup group = groups[i];
ushort glyphId = (ushort)group.startGlyphID;
int endCharCode = (int)group.endCharCode;
for (int n = (int)group.startCharCode; n <= endCharCode; n++)
{
table.Add(n, glyphId++);
}
}
return(table);
}
public override int GetGlyphId(int charCode)
{
if (File.Exists(filePath) == false)
{
return(0);
}
SequentialMapGroup group = null;
using (Stream stream = File.OpenRead(filePath))
using (BinaryReaderFont reader = new BinaryReaderFont(stream)) {
int range = (int)(numGroups / 2);
int index = range;
//int count = (int)Math.Log(index, 2);
//Console.WriteLine();
//Console.WriteLine("charCode: {0:X}", charCode);
while (range >= 1)
{
if (range > 1)
{
range /= 2;
}
reader.Position = position + index * SequentialMapGroup.ByteSize;
SequentialMapGroup g = SequentialMapGroup.Read(reader);
//Console.WriteLine("group: {0}, {1}, {2}", g, index, numGroups);
if (g.endCharCode < charCode)
{
index += range;
if (index >= numGroups)
{
break;
}
if (range == 1)
{
reader.Position = position + index * SequentialMapGroup.ByteSize;
g = SequentialMapGroup.Read(reader);
if (g.startCharCode > charCode)
{
break;
}
}
continue;
}
if (g.startCharCode > charCode)
{
index -= range;
if (index < 0)
{
break;
}
continue;
}
if (g.endCharCode >= charCode && g.startCharCode <= charCode)
{
group = g;
break;
}
break;
}
}
/*
* for (int i = 0; i < groups.Length; i++) {
* SequentialMapGroup g = groups[i];
* if (g.endCharCode >= charCode && g.startCharCode <= charCode) {
* group = g;
* break;
* }
* }
*/
if (group == null)
{
return(0);
}
return((ushort)(group.startGlyphID + (charCode - group.startCharCode)));
/*
* if (File.Exists(filePath) == false) {
* return 0;
* }
* using (Stream stream = File.OpenRead(filePath))
* using (BinaryReaderFont reader = new BinaryReaderFont(stream)) {
* reader.Position = position + charCode;
* return reader.ReadByte();
* }
*/
}
