/**
* Writes any remaining output to the output buffer and resets the converter to its initial state.
*
* @param output char array to receive flushed output.
* @param outStart start writing to output array at this offset.
* @param outEnd stop writing to output array at this offset (exclusive).
* @exception MalformedInputException if the output to be flushed contained a partial or invalid
* multibyte character sequence. flush will write what it can to the output buffer and reset
* the converter before throwing this exception. An additional call to flush is not required.
* @exception ConversionBufferFullException if output array is filled before all the output can be
* flushed. flush will write what it can to the output buffer and remember its state. An
* additional call to flush with a new output buffer will conclude the operation.
*/
public int flush(char[] output, int outStart, int outEnd)
throws MalformedInputException, ConversionBufferFullException {
byteOff = charOff = 0;
if (outStart >= outEnd || outStart >= output.length) throw new ConversionBufferFullException();
if (dst != null && dst.array() == output) dst.position(outStart).limit(outEnd);
else dst = CharBuffer.wrap(output, outStart, outEnd - outStart);
CoderResult cr = null;
try {
if (src != null) cr = decoder.decode((ByteBuffer) src.clear(), dst, true);
assert !cr.isUnmappable();
if (cr.isMalformed()) {
badInputLength = cr.length();
reset();
throw new MalformedInputException();
}
} catch (IllegalStateException ise) {
if (src != null) cr = decoder.reset().decode(src, dst, true);
}
try {
cr = decoder.flush(dst);
} catch (Exception e) {
assert false;
} finally {
byteOff = 0;
charOff = dst.position();
src = null;
}
if (cr.isOverflow()) throw new ConversionBufferFullException();
// Return the length written to the output buffer
if (cr.isUnderflow()) {
int written = charOff - outStart;
reset();
return written;
}
assert false;
return -1; // should be never reached
}