private void fillBuffer()

in src/main/java/org/apache/commons/io/input/ReaderInputStream.java [341:368]

• 25 lines of code
• 8 McCabe index (conditional complexity)

    private void fillBuffer() throws IOException {
        if (endOfInput) {
            return;
        }
        if (!endOfInput && (lastCoderResult == null || lastCoderResult.isUnderflow())) {
            encoderIn.compact();
            final int position = encoderIn.position();
            // We don't use Reader#read(CharBuffer) here because it is more efficient
            // to write directly to the underlying char array (the default implementation
            // copies data to a temporary char array).
            final int c = reader.read(encoderIn.array(), position, encoderIn.remaining());
            if (c == EOF) {
                endOfInput = true;
            } else {
                encoderIn.position(position + c);
            }
            encoderIn.flip();
        }
        encoderOut.compact();
        lastCoderResult = charsetEncoder.encode(encoderIn, encoderOut, endOfInput);
        if (endOfInput) {
            lastCoderResult = charsetEncoder.flush(encoderOut);
        }
        if (lastCoderResult.isError()) {
            lastCoderResult.throwException();
        }
        encoderOut.flip();
    }