Method encode

lib/java/nio/charset/CharsetEncoder.java:315–358

This is a facade method for the encoding operation. This method encodes the remaining character sequence of the given character buffer into a new byte buffer. This method performs a complete encoding operation, resets at first, then encodes, and flushes at last. This method should not be inv

(CharBuffer in)

     *             if other exception happened during the encode operation.
     */
    public final ByteBuffer encode(CharBuffer in)
            throws CharacterCodingException {
        if (in.remaining() == 0) {
            return ByteBuffer.allocate(0);
        }
        reset();
        int length = (int) (in.remaining() * averBytes);
        ByteBuffer output = ByteBuffer.allocate(length);
        CoderResult result = null;
        while (true) {
            result = encode(in, output, false);
            if (result==CoderResult.UNDERFLOW) {
                break;
            } else if (result==CoderResult.OVERFLOW) {
                output = allocateMore(output);
                continue;
            }
            checkCoderResult(result);
        }
        result = encode(in, output, true);
        checkCoderResult(result);

        while (true) {
            result = flush(output);
            if (result==CoderResult.UNDERFLOW) {
                output.flip();
                break;
            } else if (result==CoderResult.OVERFLOW) {
                output = allocateMore(output);
                continue;
            }
            checkCoderResult(result);
            output.flip();
            if (result.isMalformed()) {
                throw new MalformedInputException(result.length());
            } else if (result.isUnmappable()) {
                throw new UnmappableCharacterException(result.length());
            }
            break;
        }
        status = READY;
        finished = true;
        return output;
    }

    /*
     * checks the result whether it needs to throw CharacterCodingException.