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package org.apache.maven.shared.release.exec;

/*
 * 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.
 */

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

public class RawStreamPumper
    extends Thread 
{
    private InputStream in;

    private OutputStream out;

    boolean done;
    
    boolean poll;
    
    byte buffer[] = new byte[256];

    public RawStreamPumper( InputStream in , OutputStream out, boolean poll )
    {
        this.in = in;
        this.out = out;
        this.poll = poll;
    }

    public RawStreamPumper( InputStream in , OutputStream out )
    {
        this.in = in;
        this.out = out;
        this.poll = false;
    }

    public void setDone()
    {
        done = true;
    }

    public void closeInput() 
        throws IOException
    {
        in.close();
    }

    public void closeOutput()
        throws IOException
    {
        out.close();
    }

    public void run()
    {
        try
        {
            if ( poll )
            {
                while ( !done )
                {
                    if ( in.available() > 0 )
                    {
                        int i = in.read( buffer );
                        if ( i != -1 )
                        {
                            out.write( buffer, 0, i );
                            out.flush();
                        }
                        else
                        {
                            done = true;
                        }
                    }
                    else
                    {
                        Thread.sleep( 1 );
                    }
                }
            }
            else
            {
                int i = in.read( buffer );
                while ( i != -1 && !done )
                {
                    if ( i != -1 )
                    {
                        out.write( buffer, 0, i );
                        out.flush();
                    }
                    else
                    {
                        done = true;
                    }
                    i = in.read( buffer );
                }
            }
        }
        catch ( Throwable e )
        {
            // Catched everything
        }
        finally
        {
            done = true;
        }
    }
}




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