rnaedit.test.IOUtil.java Source code

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Here is the source code for rnaedit.test.IOUtil.java

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/*
    
 * Copyright 2001-2005 The Apache Software Foundation
    
 *
    
 * Licensed 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 rnaedit.test;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import org.apache.commons.net.io.Util;

/***
    
 * This is a utility class providing a reader/writer capability required
    
 * by the weatherTelnet, rexec, rshell, and rlogin example programs.
    
 * The only point of the class is to hold the static method readWrite
    
 * which spawns a reader thread and a writer thread.  The reader thread
    
 * reads from a local input source (presumably stdin) and writes the
    
 * data to a remote output destination.  The writer thread reads from
    
 * a remote input source and writes to a local output destination.
    
 * The threads terminate when the remote input source closes.
    
 * <p>
    
 ***/

public final class IOUtil

{

    public static final void readWrite(final InputStream remoteInput,

            final OutputStream remoteOutput,

            final InputStream localInput,

            final OutputStream localOutput)

    {

        Thread reader, writer;

        reader = new Thread()

        {

            public void run()

            {

                int ch;

                try

                {

                    while (!interrupted() && (ch = localInput.read()) != -1)

                    {

                        remoteOutput.write(ch);

                        remoteOutput.flush();

                    }

                }

                catch (IOException e)

                {

                    //e.printStackTrace();

                }

            }

        }

        ;

        writer = new Thread()

        {

            public void run()

            {

                try

                {

                    Util.copyStream(remoteInput, localOutput);

                }

                catch (IOException e)

                {

                    e.printStackTrace();

                    System.exit(1);

                }

            }

        };

        writer.setPriority(Thread.currentThread().getPriority() + 1);

        writer.start();

        reader.setDaemon(true);

        reader.start();

        try

        {

            writer.join();

            reader.interrupt();

        }

        catch (InterruptedException e)

        {

        }

    }

}