internal static CMapTable GetCMAP(Reader reader)
{
reader.Position = 4;
ushort numTables = (ushort)reader.ReadUint16();
ushort searchRange = (ushort)reader.ReadUint16();
ushort entrySelector = (ushort)reader.ReadUint16();
ushort rangeShift = (ushort)reader.ReadUint16();
int offset = -1;
int length = -1;
for (int i = 0; i < numTables; ++i)
{
OffsetTable table = new OffsetTable();
table.Read(reader);
if (table.Tag == "cmap")
{
offset = (int)table.Offset;
length = (int)table.Length;
break;
}
}
CMapTable cmap = new CMapTable();
cmap.Read(reader, offset, length);
return(cmap);
}
public static Font ReadFromStream(Stream stream)
{
var font = new Font();
var reader = new BinaryReader(stream);
// Offset Table
font.OffsetTable = OffsetTable.Read(reader);
// Head
var headTableRecord = font.OffsetTable.TableRecords.Single(x => x.TableTag == HeadTable.Tag);
stream.Seek(headTableRecord.Offset, SeekOrigin.Begin);
font.HeadTable = HeadTable.Read(reader);
// Horizontal Header
var horizontalHeaderTableRecord = font.OffsetTable.TableRecords.Single(x => x.TableTag == HorizontalHeaderTable.Tag);
stream.Seek(horizontalHeaderTableRecord.Offset, SeekOrigin.Begin);
font.HorizontalHeaderTable = HorizontalHeaderTable.Read(reader);
// Maximum Profile
var maximumProfileTableRecord = font.OffsetTable.TableRecords.Single(x => x.TableTag == MaximumProfileTableBase.Tag);
stream.Seek(maximumProfileTableRecord.Offset, SeekOrigin.Begin);
var maximumProfileTableVersion = Math.Round(reader.ReadFixedPointNumber(), 2);
if (maximumProfileTableVersion == 0.5m)
{
font.MaximumProfileTable = MaximumProfileTableV0_5.Read(reader, maximumProfileTableVersion);
}
else if (maximumProfileTableVersion == 1.0m)
{
font.MaximumProfileTable = MaximumProfileTableV1.Read(reader, maximumProfileTableVersion);
}
// Horizontal Metrics
var horizontalMetricsTableRecord = font.OffsetTable.TableRecords.Single(x => x.TableTag == HorizontalMetricsTable.Tag);
stream.Seek(horizontalMetricsTableRecord.Offset, SeekOrigin.Begin);
font.HorizontalMetricsTable = HorizontalMetricsTable.Read(reader,
font.HorizontalHeaderTable.NumberOfHMetrics,
font.MaximumProfileTable.NumGlyphs);
// Glyph
var glyphTableRecord = font.OffsetTable.TableRecords.Single(x => x.TableTag == GlyphTable.Tag);
font.GlyphTable = new GlyphTable(reader, glyphTableRecord.Offset);
// IndexLocation
var indexLocationTableRecord = font.OffsetTable.TableRecords.Single(x => x.TableTag == IndexLocationTableBase.Tag);
stream.Seek(indexLocationTableRecord.Offset, SeekOrigin.Begin);
if (font.HeadTable.IndexToLocFormat == 0)
{
font.IndexLocationTable = IndexLocationShortFormatTable.Read(reader, font.MaximumProfileTable.NumGlyphs);
}
else
{
font.IndexLocationTable = IndexLocationLongFormatTable.Read(reader, font.MaximumProfileTable.NumGlyphs);
}
// PostScript
var postScriptTableRecord = font.OffsetTable.TableRecords.Single(x => x.TableTag == PostScriptTable.Tag);
stream.Seek(postScriptTableRecord.Offset, SeekOrigin.Begin);
font.PostScriptTable = PostScriptTable.Read(reader);
// OS/2 and Windows
var os2TableRecord = font.OffsetTable.TableRecords.Single(x => x.TableTag == Os2Table.Tag);
stream.Seek(os2TableRecord.Offset, SeekOrigin.Begin);
font.Os2Table = Os2Table.Read(reader);
// CharacterMap
var characterMapTableRecord = font.OffsetTable.TableRecords.Single(x => x.TableTag == CharacterMapTable.Tag);
stream.Seek(characterMapTableRecord.Offset, SeekOrigin.Begin);
font.CharacterMapTable = CharacterMapTable.Read(reader);
return(font);
}