/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Android SUTAgent code.
 *
 * The Initial Developer of the Original Code is
 * Bob Moss.
 * Portions created by the Initial Developer are Copyright (C) 2010
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *  Bob Moss <bmoss@mozilla.com>
 * 
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

package com.mozilla.SUTAgentAndroid.service;

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

public class RedirOutputThread extends Thread
	{
	OutputStream out;
	InputStream	sutErr;
	InputStream	sutOut;
	Process pProc;
	String	strOutput;
	
	public RedirOutputThread(Process pProc, OutputStream out)
		{
		if (pProc != null)
			{
			this.pProc = pProc;
			sutErr = pProc.getErrorStream(); // Stderr
			sutOut = pProc.getInputStream(); // Stdout
			}
		if (out != null)
			this.out = out;
		
		strOutput = "";
		}
	
	public void run()
		{
		boolean bStillRunning = true;
		int	nBytesOut = 0;
		int nBytesErr = 0;
		int nBytesRead = 0;
		PrintWriter pOut = null;
		byte[] buffer = new byte[1024];
		
		if (out != null)
			pOut = new PrintWriter(out);
		else
			bStillRunning = true;
		
		while (bStillRunning) 
			{
			try 
				{
				if ((nBytesOut = sutOut.available()) > 0)
					{
					if (nBytesOut > buffer.length)
						{
						buffer = null;
						System.gc();
						buffer = new byte[nBytesOut];
						}
					nBytesRead = sutOut.read(buffer, 0, nBytesOut);
					if (nBytesRead == -1)
						bStillRunning = false;
					else 
						{
						String sRep = new String(buffer,0,nBytesRead).replace("\n", "\r\n");
						if (pOut != null)
							{
							pOut.print(sRep);
							pOut.flush();
							}
						else
							strOutput += sRep;
						}
					}

				if ((nBytesErr = sutErr.available()) > 0)
					{
					if (nBytesErr > buffer.length)
						{
						buffer = null;
						System.gc();
						buffer = new byte[nBytesErr];
						}
					nBytesRead = sutErr.read(buffer, 0, nBytesErr);
					if (nBytesRead == -1)
						bStillRunning = false;
					else 
						{
						String sRep = new String(buffer,0,nBytesRead).replace("\n", "\r\n");
						if (pOut != null)
							{
							pOut.print(sRep);
							pOut.flush();
							}
						else
							strOutput += sRep;
						}
					}

				bStillRunning = (IsProcRunning(pProc) || (sutOut.available() > 0) || (sutErr.available() > 0));
				} 
			catch (IOException e)
				{
//				Toast.makeText(SUTAgentAndroid.me.getApplicationContext(), e.getMessage(), Toast.LENGTH_LONG).show();
				e.printStackTrace();
				}
			}
		
		pProc.destroy();
		buffer = null;
		System.gc();
		}
	
	private boolean IsProcRunning(Process pProc)
		{
		boolean bRet = false;
		@SuppressWarnings("unused")
		int nExitCode = 0;
	
		try
			{
			nExitCode = pProc.exitValue();
			}
		catch (IllegalThreadStateException z)
			{	
			bRet = true;
			}

		return(bRet);
		}
	}
