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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.InputStream;
import java.io.OutputStream;
/**
* Used by <code>Execute</code> to handle input and output stream of
* subprocesses.
*
* @since Ant 1.2
*/
public interface ExecuteStreamHandler {
/**
* Install a handler for the input stream of the subprocess.
*
* @param os output stream to write to the standard input stream of the
* subprocess
* @throws IOException on error
*/
void setProcessInputStream(OutputStream os) throws IOException;
/**
* Install a handler for the error stream of the subprocess.
*
* @param is input stream to read from the error stream from the subprocess
* @throws IOException on error
*/
void setProcessErrorStream(InputStream is) throws IOException;
/**
* Install a handler for the output stream of the subprocess.
*
* @param is input stream to read from the error stream from the subprocess
* @throws IOException on error
*/
void setProcessOutputStream(InputStream is) throws IOException;
/**
* Start handling of the streams.
* @throws IOException on error
*/
void start() throws IOException;
/**
* Stop handling of the streams - will not be restarted.
*/
void stop();
}
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