/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [year]
* [name of copyright owner]"
*
* Contributor(s):
*
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
/**
* @version 1.00 April 1, 2000
* @author Byron Nevins
*/
package com.sun.enterprise.util.io;
import java.io.*;
//import java.util.*;
//import java.util.jar.*;
//import java.util.zip.*;
public class Tee extends PrintStream
{
/////////////////////////////////////////////////////////////////
private Tee(PrintStream ps)
{
super(ps);
}
/////////////////////////////////////////////////////////////////
// Starts copying stdout and
//stderr to the file f.
public static void start(String f) throws IOException
{
// Save old settings.
oldStdout = System.out;
oldStderr = System.err;
// Create/Open logfile.
logfile = new PrintStream(new BufferedOutputStream(new FileOutputStream(f)));
// Start redirecting the output.
System.setOut(new Tee(System.out));
System.setErr(new Tee(System.err));
}
/////////////////////////////////////////////////////////////////
// Restores the original settings.
public static void stop()
{
System.setOut(oldStdout);
System.setErr(oldStderr);
try
{
logfile.close();
}
catch (Exception e)
{
e.printStackTrace();
}
}
/////////////////////////////////////////////////////////////////
// PrintStream override.
public void write(int b)
{
try
{
logfile.write(b);
}
catch (Exception e)
{
e.printStackTrace();
setError();
}
super.write(b);
}
/////////////////////////////////////////////////////////////////
// PrintStream override.
public void write(byte buf[], int off, int len)
{
try
{
logfile.write(buf, off, len);
}
catch (Exception e)
{
e.printStackTrace();
setError();
}
super.write(buf, off, len);
}
/////////////////////////////////////////////////////////////////
static OutputStream logfile;
static PrintStream oldStdout;
static PrintStream oldStderr;
/////////////////////////////////////////////////////////////////
public static void main(String[] args)
{
try
{
// Start capturing characters
//into the log file.
Tee.start("log.txt");
// Test it.
System.out.println(
"Here's is some stuff to stdout.");
System.err.println(
"Here's is some stuff to stderr.");
System.out.println(
"Let's throw an exception...");
new Exception().printStackTrace();
}
catch (Exception e)
{
e.printStackTrace();
}
finally
{
// Stop capturing characters
//into the log file
// and restore old setup.
Tee.stop();
}
}
}
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