com.l2jfree.network.SendableBasePacket.java Source code

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Here is the source code for com.l2jfree.network.SendableBasePacket.java

Source

/*
 * This program 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 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 General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <http://www.gnu.org/licenses/>.
 */
package com.l2jfree.network;

import java.io.ByteArrayOutputStream;
import java.io.UnsupportedEncodingException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public abstract class SendableBasePacket {
    protected static final Log _log = LogFactory.getLog(SendableBasePacket.class);

    private final ByteArrayOutputStream _bao = new ByteArrayOutputStream();

    protected SendableBasePacket(int opCode) {
        writeC(opCode);
    }

    protected final void writeD(int value) {
        _bao.write(value & 0xff);
        _bao.write(value >> 8 & 0xff);
        _bao.write(value >> 16 & 0xff);
        _bao.write(value >> 24 & 0xff);
    }

    protected final void writeH(int value) {
        _bao.write(value & 0xff);
        _bao.write(value >> 8 & 0xff);
    }

    protected final void writeC(int value) {
        _bao.write(value & 0xff);
    }

    protected final void writeF(double org) {
        long value = Double.doubleToRawLongBits(org);
        _bao.write((int) (value & 0xff));
        _bao.write((int) (value >> 8 & 0xff));
        _bao.write((int) (value >> 16 & 0xff));
        _bao.write((int) (value >> 24 & 0xff));
        _bao.write((int) (value >> 32 & 0xff));
        _bao.write((int) (value >> 40 & 0xff));
        _bao.write((int) (value >> 48 & 0xff));
        _bao.write((int) (value >> 56 & 0xff));
    }

    protected final void writeS(String text) {
        if (text != null) {
            try {
                final byte[] bytes = text.getBytes("UTF-16LE");

                _bao.write(bytes, 0, bytes.length);
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }
        }

        _bao.write(0);
        _bao.write(0);
    }

    protected final void writeB(byte[] bytes) {
        _bao.write(bytes, 0, bytes.length);
    }

    public byte[] getContent() {
        writeD(0x00); // reserve for checksum

        int padding = _bao.size() % 8;
        if (padding != 0)
            for (int i = padding; i < 8; i++)
                writeC(0x00);

        return _bao.toByteArray();
    }
}