Message.java

/*
 *  This file is part of the Haven & Hearth game client.
 *  Copyright (C) 2009 Fredrik Tolf <fredrik@dolda2000.com>, and
 *                     Björn Johannessen <johannessen.bjorn@gmail.com>
 *
 *  Redistribution and/or modification of this file is subject to the
 *  terms of the GNU Lesser General Public License, version 3, as
 *  published by the Free Software Foundation.
 *
 *  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.
 *
 *  Other parts of this source tree adhere to other copying
 *  rights. Please see the file `COPYING' in the root directory of the
 *  source tree for details.
 *
 *  A copy the GNU Lesser General Public License is distributed along
 *  with the source tree of which this file is a part in the file
 *  `doc/LPGL-3'. If it is missing for any reason, please see the Free
 *  Software Foundation's website at <http://www.fsf.org/>, or write
 *  to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 *  Boston, MA 02111-1307 USA
 */

package haven;

import java.awt.Color;
import java.util.ArrayList;

public class Message implements java.io.Serializable {
	public static final int RMSG_NEWWDG = 0;
	public static final int RMSG_WDGMSG = 1;
	public static final int RMSG_DSTWDG = 2;
	public static final int RMSG_MAPIV = 3;
	public static final int RMSG_GLOBLOB = 4;
	public static final int RMSG_PAGINAE = 5;
	public static final int RMSG_RESID = 6;
	public static final int RMSG_PARTY = 7;
	public static final int RMSG_SFX = 8;
	public static final int RMSG_CATTR = 9;
	public static final int RMSG_MUSIC = 10;
	public static final int RMSG_TILES = 11;
	public static final int RMSG_BUFF = 12;

	public static final int T_END = 0;
	public static final int T_INT = 1;
	public static final int T_STR = 2;
	public static final int T_COORD = 3;
	public static final int T_COLOR = 6;

	public int type;
	public byte[] blob;
	public long last = 0;
	public int retx = 0;
	public int seq;
	int off = 0;

	public Message(int type, byte[] blob) {
		this.type = type;
		this.blob = blob;
	}

	public Message(int type, byte[] blob, int offset, int len) {
		this.type = type;
		this.blob = new byte[len];
		System.arraycopy(blob, offset, this.blob, 0, len);
	}

	public Message(int type) {
		this.type = type;
		blob = new byte[0];
	}

	public boolean equals(Object o2) {
		if (!(o2 instanceof Message))
			return (false);
		Message m2 = (Message) o2;
		if (m2.blob.length != blob.length)
			return (false);
		for (int i = 0; i < blob.length; i++) {
			if (m2.blob[i] != blob[i])
				return (false);
		}
		return (true);
	}

	public Message clone() {
		return (new Message(type, blob));
	}

	public Message derive(int type, int len) {
		int ooff = off;
		off += len;
		return (new Message(type, blob, ooff, len));
	}

	public void addbytes(byte[] src, int off, int len) {
		byte[] n = new byte[blob.length + len];
		System.arraycopy(blob, 0, n, 0, blob.length);
		System.arraycopy(src, off, n, blob.length, len);
		blob = n;
	}

	public void addbytes(byte[] src) {
		addbytes(src, 0, src.length);
	}

	public void adduint8(int num) {
		addbytes(new byte[] { Utils.sb(num) });
	}

	public void adduint16(int num) {
		byte[] buf = new byte[2];
		Utils.uint16e(num, buf, 0);
		addbytes(buf);
	}

	public void addint32(int num) {
		byte[] buf = new byte[4];
		Utils.int32e(num, buf, 0);
		addbytes(buf);
	}

	public void addstring2(String str) {
		byte[] buf;
		try {
			buf = str.getBytes("utf-8");
		} catch (java.io.UnsupportedEncodingException e) {
			throw (new RuntimeException(e));
		}
		addbytes(buf);
	}

	public void addstring(String str) {
		addstring2(str);
		addbytes(new byte[] { 0 });
	}

	public void addcoord(Coord c) {
		addint32(c.x);
		addint32(c.y);
	}

	public void addlist(Object... args) {
		for (Object o : args) {
			if (o instanceof Integer) {
				adduint8(T_INT);
				addint32(((Integer) o).intValue());
			} else if (o instanceof String) {
				adduint8(T_STR);
				addstring((String) o);
			} else if (o instanceof Coord) {
				adduint8(T_COORD);
				addcoord((Coord) o);
			}
		}
	}

	public boolean eom() {
		return (off >= blob.length);
	}

	public int int8() {
		return (blob[off++]);
	}

	public int uint8() {
		return (Utils.ub(blob[off++]));
	}

	public int uint16() {
		off += 2;
		return (Utils.uint16d(blob, off - 2));
	}

	public int int32() {
		off += 4;
		return (Utils.int32d(blob, off - 4));
	}

	public String string() {
		int[] ob = new int[] { off };
		String ret = Utils.strd(blob, ob);
		off = ob[0];
		return (ret);
	}

	public Coord coord() {
		return (new Coord(int32(), int32()));
	}

	public Color color() {
		return (new Color(uint8(), uint8(), uint8(), uint8()));
	}

	public Object[] list() {
		ArrayList<Object> ret = new ArrayList<Object>();
		while (true) {
			if (off >= blob.length)
				break;
			int t = uint8();
			if (t == T_END)
				break;
			else if (t == T_INT)
				ret.add(int32());
			else if (t == T_STR)
				ret.add(string());
			else if (t == T_COORD)
				ret.add(coord());
			else if (t == T_COLOR)
				ret.add(color());
		}
		return (ret.toArray());
	}

	public String toString() {
		String ret = "";
		for (byte b : blob) {
			ret += String.format("%02x ", b);
		}
		return ("Message(" + type + "): " + ret);
	}
}