public void LoadFormat0()
{
var writer = new BinaryWriter();
//int subtableCount = 1;
writer.WriteCMapSubTable(new Format0SubTable(0, PlatformIDs.Windows, 2, new byte[] {
1, 2, 3, 4, 5, 6, 7, 8
}));
BinaryReader reader = writer.GetReader();
ushort format = reader.ReadUInt16(); // read format before we pass along as thats whet the cmap table does
Assert.Equal(0, format);
Format0SubTable table = Format0SubTable.Load(new[] {
new EncodingRecord(PlatformIDs.Windows, 2, 0)
}, reader).Single();
Assert.Equal(0, table.Language);
Assert.Equal(PlatformIDs.Windows, table.Platform);
Assert.Equal(2, table.Encoding);
Assert.Equal(new byte[] {
1, 2, 3, 4, 5, 6, 7, 8
}, table.GlyphIds);
}
public static CMapTable Load(BinaryReader reader)
{
ushort version = reader.ReadUInt16();
ushort numTables = reader.ReadUInt16();
var encodings = new EncodingRecord[numTables];
for (int i = 0; i < numTables; i++)
{
encodings[i] = EncodingRecord.Read(reader);
}
// foreach encoding we move forward looking for th subtables
var tables = new List <CMapSubTable>(numTables);
foreach (IGrouping <uint, EncodingRecord> encoding in encodings.Where(x => x.PlatformID == PlatformIDs.Windows).GroupBy(x => x.Offset))
{
reader.Seek(encoding.Key, System.IO.SeekOrigin.Begin);
ushort subTypeTableFormat = reader.ReadUInt16();
switch (subTypeTableFormat)
{
case 0:
tables.AddRange(Format0SubTable.Load(encoding, reader));
break;
case 4:
tables.AddRange(Format4SubTable.Load(encoding, reader));
break;
}
}
return(new CMapTable(tables.ToArray()));
}
public void GetCharacter_missing()
{
Format0SubTable format = new Format0SubTable(0, PlatformIDs.Windows, 2, new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 });
ushort id = format.GetGlyphId(99);
Assert.Equal(0, id);
}
public void GetCharacter()
{
var format = new Format0SubTable(0, PlatformIDs.Windows, 2, new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 });
ushort id = format.GetGlyphId(4);
Assert.Equal(5, id);
}
public void GetCharacter_missing()
{
var format = new Format0SubTable(0, PlatformIDs.Windows, 2, new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 });
bool found = format.TryGetGlyphId(new CodePoint(99), out ushort id);
Assert.False(found);
Assert.Equal(0, id);
}
public static void WriteCMapSubTable(this BinaryWriter writer, Format0SubTable subtable)
{
if (subtable == null)
{
return;
}
// Format 0 SubTable
// Type |Name | Description
// ---------|------------------|--------------------------------------------------------------------------
// uint16 |format | Format number is set to 0.
// uint16 |length | This is the length in bytes of the subtable.
// uint16 |language | Please see “Note on the language field in 'cmap' subtables“ in this document.
// uint8 |glyphIdArray[glyphcount] | An array that maps character codes to glyph index values.
writer.WriteUInt16(0);
writer.WriteUInt16((ushort)subtable.DataLength());
writer.WriteUInt16(subtable.Language);
foreach (byte c in subtable.GlyphIds)
{
writer.WriteUInt8(c);
}
}
