public String readLine()

in protonj2/src/main/java/org/apache/qpid/protonj2/buffer/ProtonBufferInputStream.java [223:258]

31 lines of code
11 McCabe index (conditional complexity)


    public String readLine() throws IOException {
        checkClosed();
        int available = available();
        if (available == 0) {
            return null;
        }

        loop: do {
            final int c = buffer.readByte() & 0xff;
            --available;
            switch (c) {
                case '\n':
                    break loop;
                case '\r':
                    if (available > 0 && (char) buffer.getUnsignedByte(buffer.getReadOffset()) == '\n') {
                        buffer.advanceReadOffset(1);
                        --available;
                    }

                    break loop;
                default:
                    if (readBuffer == null) {
                        readBuffer = new StringBuilder();
                    }
                    readBuffer.append((char) c);
            }
        } while (available > 0);

        final String result = readBuffer != null && readBuffer.length() > 0 ? readBuffer.toString() : "";

        if (readBuffer != null) {
            readBuffer.setLength(0);
        }

        return result;
    }