/**
* Check if the given byte is UTF-8 data.
*
* @param b
* @throws IOException
*/
public void checkUTF8(int b) throws UnsupportedEncodingException {
byte type = TYPES[b & 0xFF];
codep = state != UTF8_ACCEPT ? b & 0x3f | codep << 6 : 0xff >> type & b;
state = STATES[state + type];
if (state == UTF8_REJECT) {
throw WebSocketMessages.MESSAGES.invalidTextFrameEncoding();
}
}
/**
* Should be called to mark the UTF8Checker as complete. After that it MUST not been used anymore
*/
public void complete() throws UnsupportedEncodingException {
if (state != UTF8_ACCEPT) {
throw WebSocketMessages.MESSAGES.invalidTextFrameEncoding();
}
}