// $Id: LoadNetI.java,v 1.1 2002-07-14 22:15:38+09 kaiya Exp kaiya $

import java.io.*;
import java.net.*;

public class LoadNetI extends ClassLoader{
private byte[] data;
private String myname;

	public LoadNetI(String url){
		readBytes(url);
		myname=new Jcf(data).className();
	}

	String lcname(){return myname;}

	protected Class loadClass(String name, boolean resolve)
	throws ClassNotFoundException{
		Class clazz = null;

		try{ return findSystemClass(name); }
		catch(Throwable e){}

		clazz=findLoadedClass(name);
		if(clazz != null){ return clazz; }

		clazz=myFindClass(name);
		if(clazz == null ){ throw new ClassNotFoundException(name); }

		if(resolve){ resolveClass(clazz); }

		return clazz;
	}

	void readBytes(String u){
		data=new byte[4096];
		int total=0, n;
		try{
			URL url=new URL(u);
			InputStream is=url.openStream();
			while((n=is.read(data,total,data.length-total))>=0){
				if((total+=n) == data.length){
					byte newdata[]=new byte[total*2];
					System.arraycopy(data, 0, newdata, 0, total);
					data = newdata;
				}
			}
			byte[] b=new byte[total];
			System.arraycopy(data, 0, b, 0, total);
			data=b;
		}catch(IOException e){}
	}

	private synchronized Class myFindClass(String name){
		try{
			return defineClass(name, data, 0, data.length);
		}catch(Throwable e){
			System.out.println(e.getMessage());
			throw new ClassFormatError();
		}
	}

	public static void main(String args[]){
		LoadNetI loader=new LoadNetI(args[0]);
		try{
			Class c=loader.loadClass(loader.lcname());
			Runnable cmd=(Runnable)c.newInstance();
			cmd.run();
		}catch(Throwable e){
			e.printStackTrace();
		}
	}
}