ant/src/main/org/apache/tools/ant/taskdefs/ExecuteStreamHandler.java

/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
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package org.apache.tools.ant.taskdefs;

import java.io.InputStream;
import java.io.IOException;
import java.io.OutputStream;

/**
 * Used by <code>Execute</code> to handle input and output stream of
 * subprocesses.
 *
 * @author thomas.haas@softwired-inc.com
 */
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
     */
    public 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
     */
    public 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
     */
    public void setProcessOutputStream(InputStream is) throws IOException;

    /**
     * Start handling of the streams.
     */
    public void start() throws IOException;

    /**
     * Stop handling of the streams - will not be restarted.
     */
    public void stop();
}