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/*
* 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)));</pre>
*
* <p><strong>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></p>
*
* @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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