law(external,language(java))

import java.util.*;
import java.io.*;

public class external extends Law{


        public void sent(String source, String message, String dest) {
         System.out.println("SENT "+source +" "+message+" "+dest+" "+destlaw);

	 if(message.startsWith("release")) { //release(msg,host,port)
	
		String msg=getFromMessage(message,0);
		String host=getFromMessage(message,1);
		int port = Integer.parseInt(getFromMessage(message,2));

		doRelease(Self, msg, host, port);
		return;
	 }

	 doForward();
        }

	public void arrived(String source, String message, String dest) {
	 System.out.println("ARRIVED "+source+" "+sourcelaw +" "+message+" "+dest);
	 doDeliver();
	}

        public void submitted(String source, int port, String message, String dest) {
         System.out.println("SUBMITED"+source +" "+port+" "+message+" "+dest);
	 doDeliver(source+":"+port,message,dest);
        }


        public void disconnected() {
         System.out.println("DISCONNECTED executes in law "+Self);
	 doQuit();
        }


        /**
        Get the argument no index from the message argument, assuming that the message is 
        properly formed as a regular expression.
        */
        public String getFromMessage(String message, int index) {

           Term tmessage = Term.parse(message);
           if( !(tmessage.type == Term.CType || tmessage.type == Term.LType))
                return null;

           if(tmessage.getArity()<=index)
                return null;

           return tmessage.getSubTerm(index).toString();
        }

}