/*
 * Copyright 2012, 2013 Red Hat, Inc.
 *
 * This file is part of Thermostat.
 *
 * Thermostat is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published
 * by the Free Software Foundation; either version 2, or (at your
 * option) any later version.
 *
 * Thermostat 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Thermostat; see the file COPYING.  If not see
 * <http://www.gnu.org/licenses/>.
 *
 * Linking this code with other modules is making a combined work
 * based on this code.  Thus, the terms and conditions of the GNU
 * General Public License cover the whole combination.
 *
 * As a special exception, the copyright holders of this code give
 * you permission to link this code with independent modules to
 * produce an executable, regardless of the license terms of these
 * independent modules, and to copy and distribute the resulting
 * executable under terms of your choice, provided that you also
 * meet, for each linked independent module, the terms and conditions
 * of the license of that module.  An independent module is a module
 * which is not derived from or based on this code.  If you modify
 * this code, you may extend this exception to your version of the
 * library, but you are not obligated to do so.  If you do not wish
 * to do so, delete this exception statement from your version.
 */

package com.redhat.thermostat.common.command;

import org.jboss.netty.buffer.ChannelBuffer;
import static org.jboss.netty.buffer.ChannelBuffers.buffer;

public class EncodingHelper {

    public static void encode(String name, String value, ChannelBuffer dynamicBuffer) {
        byte[] nameBytes = name.getBytes();
        byte[] valueBytes = value.getBytes();
        dynamicBuffer.writeInt(nameBytes.length);
        dynamicBuffer.writeInt(valueBytes.length);
        dynamicBuffer.writeBytes(nameBytes);
        dynamicBuffer.writeBytes(valueBytes);
    }

    public static ChannelBuffer encode(String message) {
        byte[] messageBytes = message.getBytes();
        return encode(messageBytes);
    }
    
    private static ChannelBuffer encode(byte[] message) {
        ChannelBuffer buf = buffer(4 + message.length);
        buf.writeInt(message.length);
        buf.writeBytes(message);
        return buf;
    }

    public static String trimType(String full) {
        int typePointer = full.lastIndexOf('.');
        return full.substring(typePointer + 1);
    }
    
}