Ant example source code file (TaskOutputStream.java)

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Java - Ant tags/keywords

io, ioexception, ioexception, outputstream, outputstream, string, stringbuffer, stringbuffer, task, taskoutputstream, taskoutputstream

The TaskOutputStream.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 java.io.OutputStream;
import org.apache.tools.ant.Task;

/**
 * Redirects text written to a stream thru the standard
 * ant logging mechanism. This class is useful for integrating
 * with tools that write to System.out and System.err. For example,
 * the following will cause all text written to System.out to be
 * logged with "info" priority:
 * <pre>System.setOut(new PrintStream(new TaskOutputStream(project, Project.MSG_INFO)));

* * <p>As of Ant 1.2, this class is considered to be dead code * by the Ant developers and is unmaintained. Don't use * it.</strong>

* * @deprecated since 1.2.x. * Use LogOutputStream instead. */ public class TaskOutputStream extends OutputStream { private Task task; private StringBuffer line; private int msgOutputLevel; /** * Constructs a new JavacOutputStream with the given project * as the output source for messages. */ TaskOutputStream(Task task, int msgOutputLevel) { System.err.println("As of Ant 1.2 released in October 2000, the " + "TaskOutputStream class"); System.err.println("is considered to be dead code by the Ant " + "developers and is unmaintained."); System.err.println("Don\'t use it!"); this.task = task; this.msgOutputLevel = msgOutputLevel; line = new StringBuffer(); } /** * Write a character to the output stream. This method looks * to make sure that there isn't an error being reported and * will flush each line of input out to the project's log stream. * @param c the character to write * @throws IOException on error */ public void write(int c) throws IOException { char cc = (char) c; if (cc == '\r' || cc == '\n') { // line feed if (line.length() > 0) { processLine(); } } else { line.append(cc); } } /** * Processes a line of input and determines if an error occurred. */ private void processLine() { String s = line.toString(); task.log(s, msgOutputLevel); line = new StringBuffer(); } }

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