redirectingstreamhandler.java

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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.cvslib;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.taskdefs.PumpStreamHandler;

/**
 * A dummy stream handler that just passes stuff to the parser.
 *
 */
class RedirectingStreamHandler
     extends PumpStreamHandler {
    RedirectingStreamHandler(final ChangeLogParser parser) {
        super(new RedirectingOutputStream(parser),
            new ByteArrayOutputStream());
    }


    String getErrors() {
        try {
            final ByteArrayOutputStream error
                = (ByteArrayOutputStream) getErr();

            return error.toString("ASCII");
        } catch (final Exception e) {
            return null;
        }
    }


    public void stop() {
        super.stop();
        try {
            getErr().close();
            getOut().close();
        } catch (final IOException e) {
            // plain impossible
            throw new BuildException(e);
        }
    }
}