/*

* 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.taskdefs;

import java.io.File;

import java.util.ArrayList;

import java.util.Iterator;

import org.apache.tools.ant.BuildException;

import org.apache.tools.ant.Task;

import org.apache.tools.ant.types.FileSet;

import org.apache.tools.ant.types.ResourceCollection;

import org.apache.tools.ant.types.resources.FileResource;

import org.apache.commons.configuration.*;

/**

 * Can load ant configuration file both in .xml and .txt format.

 * In .txt file configuration could be defined like -

 * text.a = text.value.A

 * text.b : text.value.B

 * text.c : ${text.a}

 * In .xml file configuration could be defined like -

 * <config>

 *   <foo>bar</foo>

 *   <interpolated>foo value = ${foo}</interpolated>

 *    <xml>

 *        <c>C</c>

 *        <d>D</d>

 *    </xml>

 *    <array>

 *        <value>one</value>

 *        <value>two</value>

 *    </array>

 *</config> 

 * @ant.task name="configuration"

*/

public class AntConfigurationTask extends Task

{

    private File filepath;

    private ArrayList<ResourceCollection> rcs = new ArrayList<ResourceCollection>();

    public final void setFile(final File file)

    {

        this.filepath = file;

    }

    public final void addFileset(final FileSet set)

    {

        add(set);

    }

    public final void add( final ResourceCollection res)

    {

        rcs.add(res);

    }

    public final void execute() 

    {

        if (filepath != null)

        {

            importFile(filepath);

        }

        else

        {

            Iterator resourceCollectionIter = rcs.iterator();

            while (resourceCollectionIter.hasNext())

            {

                ResourceCollection resourceCollection = (ResourceCollection) resourceCollectionIter

                        .next();

                Iterator resourceIter = resourceCollection.iterator();

                while (resourceIter.hasNext())

                {

                    FileResource filepath = (FileResource) resourceIter.next();

                    importFile(filepath.getFile());

                }

            }

        }

    }

    private void importFile(final File file)

    {

        try

        {

            String filename = file.getName();

            Configuration config = null;

            if (filename.endsWith(".txt"))

            {

                config = new PropertiesConfiguration(file);

            }

            else if (filename.endsWith(".xml"))

            {

                config = new XMLConfiguration(file);

            }

            Iterator keysIter = config.getKeys();

            while (keysIter.hasNext())

            {

                String key = (String) keysIter.next();

                getProject().setProperty(key, config.getString(key));

            }

        }

        catch (ConfigurationException e)

        {

            throw new BuildException("Not able to import the ANT file " + e.getMessage());

        }

    }

}