Ant example source code file (LogStreamHandler.java)

This example Ant source code file (LogStreamHandler.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Ant tags/keywords

buildexception, buildexception, io, ioexception, logoutputstream, logoutputstream, logstreamhandler, logstreamhandler, pumpstreamhandler, pumpstreamhandler

The LogStreamHandler.java source code

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */

package org.apache.tools.ant.taskdefs;

import java.io.IOException;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.ProjectComponent;
import org.apache.tools.ant.Task;

/**
 * Logs standard output and error of a subprocess to the log system of ant.
 *
 * @since Ant 1.2
 */
public class LogStreamHandler extends PumpStreamHandler {

    /**
     * Creates log stream handler
     *
     * @param task the task for whom to log
     * @param outlevel the loglevel used to log standard output
     * @param errlevel the loglevel used to log standard error
     */
    public LogStreamHandler(Task task, int outlevel, int errlevel) {
        this((ProjectComponent) task, outlevel, errlevel);
    }

    /**
     * Creates log stream handler
     *
     * @param pc the project component for whom to log
     * @param outlevel the loglevel used to log standard output
     * @param errlevel the loglevel used to log standard error
     */
    public LogStreamHandler(ProjectComponent pc, int outlevel, int errlevel) {
        super(new LogOutputStream(pc, outlevel),
              new LogOutputStream(pc, errlevel));
    }

    /**
     * Stop the log stream handler.
     */
    public void stop() {
        super.stop();
        try {
            getErr().close();
            getOut().close();
        } catch (IOException e) {
            // plain impossible
            throw new BuildException(e);
        }
    }
}