/*
 * By Dave Makower
 * Copyright © 1996 by Pencom Web Works, a business unit of Pencom Systems, Inc.
 * Send inquiries to <davemak@pencom.com>
 */

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

public class StreamPump extends Thread {
	DataInputStream in;
	PrintStream out;
	Thread master;
	
	public StreamPump(InputStream iStream, OutputStream oStream, Thread m) {
		
		super("StreamPump for " + m.getName());
		
		master = m;
		
		if (iStream instanceof DataInputStream) {
			in = (DataInputStream) iStream;
		} else {
			in = new DataInputStream(iStream);
		}
	
		if (oStream instanceof PrintStream) {
			out = (PrintStream) oStream;
		} else {
			out = new PrintStream(oStream);
		}
		start();
	}
	
	public void run() {
		String line;
		
		try {
			while((master != null) && (master.isAlive())) {
				line = in.readLine();
	
				// FOR DEBUGGING
				// System.out.println("StreamPump received " + line);
				// System.out.println("Sending to output stream...");
				
				if (line == null) {
					throw new IOException("StreamPump got null from readLine()");
				}
				out.println(line);
			}
		} 
		catch (IOException e) {
			// e.printStackTrace(System.err);
		} 
		finally {
			if (master != null) {
				master.resume();
			}
			return;
		}
	}
}