* when there is not enough data available
*/
@Override
public String getPrefixedString(int prefixLength, CharsetDecoder decoder) throws CharacterCodingException {
if (!prefixedDataAvailable(prefixLength)) {
throw new BufferUnderflowException();
}
int fieldSize = 0;
switch (prefixLength) {
case 1:
fieldSize = getUnsigned();
break;
case 2:
fieldSize = getUnsignedShort();
break;
case 4:
fieldSize = getInt();
break;
}
if (fieldSize == 0) {
return "";
}
boolean utf16 = decoder.charset().name().startsWith("UTF-16");
if (utf16 && (fieldSize & 1) != 0) {
throw new BufferDataException("fieldSize is not even for a UTF-16 string.");
}
int oldLimit = limit();
int end = position() + fieldSize;
if (oldLimit < end) {
throw new BufferUnderflowException();
}
limit(end);
decoder.reset();