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/*
 * Copyright (c) 2014 "Kaazing Corporation," (www.kaazing.com)
 *
 * This file is part of Robot.
 *
 * Robot is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see .
 */

package org.kaazing.robot.driver.util;

import org.jboss.netty.buffer.ChannelBuffer;

public final class Utils {

    public static String byteArrayToString(byte[] bytes) {
        StringBuilder sb = new StringBuilder();
        // int count = 0;
        for (byte b : bytes) {
            // if( count % 2 == 0 ) {
            // sb.append( " 0x");
            // }
            sb.append(String.format("0x%02x ", b & 0xff));
        }

        return sb.toString();
    }

    public static String format(ChannelBuffer observed) {
        if (!observed.readable()) {
            return "[]";
        }
        else {
            StringBuilder sb = new StringBuilder();
            sb.append("[");
            for (int readerIndex = observed.readerIndex(); readerIndex < observed.writerIndex(); readerIndex++) {
                sb.append(String.format("0x%02x ", observed.getByte(readerIndex)));
            }
            sb.setCharAt(sb.length() - 1, ']');
            return sb.toString();
        }
    }

    public static String format(byte[] observed) {
        if (observed.length == 0) {
            return "[]";
        }
        else {
            StringBuilder sb = new StringBuilder();
            sb.append("[");
            for (int index = 0; index < observed.length; index++) {
                sb.append(String.format("0x%02x ", observed[index]));
            }
            sb.setCharAt(sb.length() - 1, ']');
            return sb.toString();
        }
    }

    private Utils() {
        // utility class
    }
}