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Some libraries from Matthew Johnson: http://www.matthew.ath.cx/projects/java/ Modifications: - including precompiled native C libraries (libunix-java) for architectures: arm, amd64 and i386 - UnixSocket/UnixServerSocket now implements closable (allows try-with-resources usage) - Cleaned up code style - Split test classes to test classpath - Introduced JUnit - Removed the whole CGI package, it should never ever been used these days

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/*
 * Java Exec Pipe Library
 *
 * Copyright (c) Matthew Johnson 2005
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * To Contact the author, please email [email protected]
 *
 */

package cx.ath.matthew.io;

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

/**
 * Copies from an input stream to an output stream using a Thread.
 * example:
 *
 *  * InputStream a = getInputStream();
 * OutputStream b = getOutputStream();
 * InOutCopier copier = new InOutCopier(a, b);
 * copier.start();
 * <do stuff that writes to the inputstream>
 * 
 */
public class InOutCopier extends Thread {
    private static final int    BUFSIZE = 1024;
    private BufferedInputStream is;
    private OutputStream        os;
    private boolean             enable;

    /**
    * Create a copier from an inputstream to an outputstream
    * @param _is The stream to copy from
    * @param _os the stream to copy to
    * @throws IOException on error
    */
    public InOutCopier(InputStream _is, OutputStream _os) throws IOException {
        this.is = new BufferedInputStream(_is);
        this.os = _os;
        this.enable = true;
    }

    /**
    * Force close the stream without waiting for EOF on the source.
    */
    public void close() {
        enable = false;
        interrupt();
    }

    /**
    * Flush the outputstream.
    * @throws IOException on error
    */
    public void flush() throws IOException {
        os.flush();
    }

    /** Start the thread and wait to make sure its really started.
     */
    public synchronized void start() {
        super.start();
        try {
            wait();
        } catch (InterruptedException exI) {
        }
    }

    /**
    * Copies from the inputstream to the outputstream
    * until EOF on the inputstream or explicitly closed
    * @see #close()
    */
    public void run() {
        byte[] buf = new byte[BUFSIZE];
        synchronized (this) {
            notifyAll();
        }
        while (enable)
            try {
                int n = is.read(buf);
                if (0 > n)
                    break;
                if (0 < n) {
                    os.write(buf, 0, (n > BUFSIZE ? BUFSIZE : n));
                    os.flush();
                }
            } catch (IOException exIo) {
                break;
            }
        try {
            os.close();
        } catch (IOException exIo) {
        }
    }
}