| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 2000,2002 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, if |
| * any, must include the following acknowlegement: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowlegement may appear in the software itself, |
| * if and wherever such third-party acknowlegements normally appear. |
| * |
| * 4. The names "The Jakarta Project", "Ant", and "Apache Software |
| * Foundation" must not be used to endorse or promote products derived |
| * from this software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache" |
| * nor may "Apache" appear in their names without prior written |
| * permission of the Apache Group. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| |
| package org.apache.tools.ant.taskdefs; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| |
| /** |
| * Copies all data from an input stream to an output stream. |
| * |
| * @author thomas.haas@softwired-inc.com |
| */ |
| public class StreamPumper implements Runnable { |
| |
| // TODO: make SIZE and SLEEP instance variables. |
| // TODO: add a status flag to note if an error occured in run. |
| |
| private final static int SLEEP = 5; |
| private final static int SIZE = 128; |
| private InputStream is; |
| private OutputStream os; |
| private boolean finished; |
| |
| /** |
| * Create a new stream pumper. |
| * |
| * @param is input stream to read data from |
| * @param os output stream to write data to. |
| */ |
| public StreamPumper(InputStream is, OutputStream os) { |
| this.is = is; |
| this.os = os; |
| } |
| |
| |
| /** |
| * Copies data from the input stream to the output stream. |
| * |
| * Terminates as soon as the input stream is closed or an error occurs. |
| */ |
| public void run() { |
| synchronized(this) { |
| // Just in case this object is reused in the future |
| finished = false; |
| } |
| |
| final byte[] buf = new byte[SIZE]; |
| |
| int length; |
| try { |
| while ((length = is.read(buf)) > 0) { |
| os.write(buf, 0, length); |
| try { |
| Thread.sleep(SLEEP); |
| } catch (InterruptedException e) {} |
| } |
| } catch(IOException e) { |
| } finally { |
| synchronized(this) { |
| finished = true; |
| notify(); |
| } |
| } |
| } |
| |
| /** |
| * Tells whether the end of the stream has been reached. |
| * @return true is the stream has been exhausted. |
| **/ |
| public synchronized boolean isFinished() { |
| return finished; |
| } |
| |
| /** |
| * This method blocks until the stream pumper finishes. |
| * @see #isFinished() |
| **/ |
| public synchronized void waitFor() |
| throws InterruptedException |
| { |
| while(!isFinished()) { |
| wait(); |
| } |
| } |
| } |