/*

* Copyright (c) 2007-2008 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

package com.nokia.ant;

import java.io.*;

import org.apache.bsf.BSFException;

import org.apache.bsf.BSFManager;

/**

 * Override default implementation to support source with are not files.

 * 

 * @author Helium Team

 * @see jep.BSFJepEngine

 */

public class BSFJepEngine extends jep.BSFJepEngine

{

    static

    {

        BSFManager.registerScriptingEngine("jep", "com.nokia.ant.BSFJepEngine", new String[]

        { "py" });

    }

    /**

     * Execute a script.

     * 

     * @param source

     *            a <code>String</code> value

     * @param lineNo

     *            an <code>int</code> value

     * @param columnNo

     *            an <code>int</code> value

     * @param script

     *            an <code>Object</code> value

     * @exception BSFException

     *                if an error occurs

     */

    public final void exec(final String source, final int lineNo, final int columnNo, final Object script) throws BSFException

    {

        boolean deleteTemp = false;

        File file = null;

        try

        {

            file = new File(script.toString());

            if (file.exists() && file.isFile())

            {

                super.exec(source, lineNo, columnNo, script);

            }

            else

            {

                deleteTemp = true;

                file = File.createTempFile("helium", null);

                PrintWriter output = new PrintWriter(new FileOutputStream(file));

                output.write(script.toString());

                output.close();

                super.exec(source, lineNo, columnNo, file.getAbsolutePath());

            }

        }

        catch (Exception e)

        {

            throw new BSFException(BSFException.REASON_EXECUTION_ERROR, e.toString(), e);

        }

        finally

        {

            terminate();

            if (deleteTemp && file != null && file.exists()) {

                file.delete();

            }

        }

    }

}