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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
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 *
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 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
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 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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 * language governing permissions and limitations under the License.
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 * GPL Classpath Exception:
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package com.sun.enterprise.universal.process;

import java.io.*;


///////////////////////////////////////////////////////////////////////////

class ProcessStreamDrainerWorker implements Runnable
{
    ProcessStreamDrainerWorker(InputStream in, PrintStream Redirect, boolean save)
    {
        if(in == null)
            throw new NullPointerException("InputStream argument was null.");
        
        reader = new BufferedInputStream(in);
        redirect = Redirect;

        if(save) {
            sb = new StringBuilder();
        }
    }
    
    public void run()
    {
        if(reader == null)
            return;
        
        try
        {
            int count = 0;
            byte[] buffer = new byte[4096];
            
            while ((count = reader.read(buffer)) != -1)
            {
                if(redirect != null)
                    redirect.write(buffer, 0, count);

               if(sb != null)
                   sb.append(new String(buffer, 0, count));
            }
        } 
        catch (IOException e)
        {
        }
    }

    String getString() {
        if(sb != null)
            return sb.toString();
        else
            return "";
    }
    
    private final   BufferedInputStream reader;
    private final   PrintStream         redirect;
    private         StringBuilder       sb;
}