private static void ReadUTF8CharRaw(Stream stream, Stream ostream)
{
int tag = stream.ReadByte();
switch (tag >> 4)
{
case 0:
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7: {
// 0xxx xxxx
ostream.WriteByte((byte)tag);
break;
}
case 12:
case 13: {
// 110x xxxx 10xx xxxx
ostream.WriteByte((byte)tag);
ostream.WriteByte((byte)stream.ReadByte());
break;
}
case 14: {
// 1110 xxxx 10xx xxxx 10xx xxxx
ostream.WriteByte((byte)tag);
ostream.WriteByte((byte)stream.ReadByte());
ostream.WriteByte((byte)stream.ReadByte());
break;
}
default:
throw ValueReader.BadEncoding(tag);
}
}
private static void ReadStringRaw(Stream stream, Stream ostream)
{
int count = 0;
int tag = '0';
do
{
count *= 10;
count += tag - '0';
tag = stream.ReadByte();
ostream.WriteByte((byte)tag);
} while (tag != TagQuote);
for (int i = 0; i < count; ++i)
{
tag = stream.ReadByte();
switch (tag >> 4)
{
case 0:
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7: {
// 0xxx xxxx
ostream.WriteByte((byte)tag);
break;
}
case 12:
case 13: {
// 110x xxxx 10xx xxxx
ostream.WriteByte((byte)tag);
ostream.WriteByte((byte)stream.ReadByte());
break;
}
case 14: {
// 1110 xxxx 10xx xxxx 10xx xxxx
ostream.WriteByte((byte)tag);
ostream.WriteByte((byte)stream.ReadByte());
ostream.WriteByte((byte)stream.ReadByte());
break;
}
case 15: {
// 1111 0xxx 10xx xxxx 10xx xxxx 10xx xxxx
if ((tag & 0xf) <= 4)
{
ostream.WriteByte((byte)tag);
ostream.WriteByte((byte)stream.ReadByte());
ostream.WriteByte((byte)stream.ReadByte());
ostream.WriteByte((byte)stream.ReadByte());
++i;
break;
}
goto default;
// no break here!! here need throw exception.
}
default:
throw ValueReader.BadEncoding(tag);
}
}
ostream.WriteByte((byte)stream.ReadByte());
}