Copyright (c) 2006 IBM Corporation and others.
All rights reserved. This program and the accompanying materials 
are made available under the terms of the Eclipse Public License v1.0
which accompanies this distribution, and is available at
http://www.eclipse.org/legal/epl-v10.html
Contributors:
    Matthew Webster - initial implementation
/*******************************************************************************
 * Copyright (c) 2006 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     Matthew Webster - initial implementation
 *******************************************************************************/
package org.aspectj.weaver.tools;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintStream;

public class DefaultTraceFactory extends TraceFactory {

	public final static String ENABLED_PROPERTY = "org.aspectj.tracing.enabled";
	public final static String FILE_PROPERTY = "org.aspectj.tracing.file";

    private boolean tracingEnabled = getBoolean(ENABLED_PROPERTY,false);
    private PrintStream print;

    public DefaultTraceFactory() {
		String filename = System.getProperty(FILE_PROPERTY);
		if (filename != null) {
			File file = new File(filename);
			try {
				print = new PrintStream(new FileOutputStream(file));
			}
			catch (IOException ex) {
	    		if (debug) ex.printStackTrace();
			}
		}
	}
    
    public boolean isEnabled() {
		return tracingEnabled;
	}
    
    public Trace getTrace (Class clazz) {
    	DefaultTrace trace = new DefaultTrace(clazz);
    	trace.setTraceEnabled(tracingEnabled);
    	if (print != null) trace.setPrintStream(print);
    	return trace;
    }

}