/*

* 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.util.Iterator;

import org.apache.tools.ant.BuildEvent;

import org.apache.tools.ant.Project;

import com.nokia.helium.core.ant.types.*;

import org.apache.tools.ant.BuildListener;

import org.apache.tools.ant.BuildLogger;

/**

 * 

 */

public class HelpDef extends HlmPostDefImpl

{

    /**

     * 

     * @param project

     *            Object of the project

     * @param targetNames

     *            Array of target names to execute

     * 

     */

    public void execute(Project project, String module, String[] targetNames)

    {

        String firstTarget;

        // take target

        if (targetNames != null && targetNames.length > 0)

        {

            firstTarget = targetNames[0];

        }

        else

        // no target, so set the default one

        {

            firstTarget = "help";

        }

        // If 'help' target is called, just run that and set other

        // target names as a property

        if (firstTarget.equals("help"))

        {

            displayHelp(project, targetNames, firstTarget);

        }

        project.addBuildListener(new UnsubstListener());

    }

    class UnsubstListener implements BuildListener {

        public void buildFinished(BuildEvent event) {

            Project project = event.getProject();

            String drivenotdef = project.getProperty("build.drive.notdefined");

            if (System.getProperty("os.name").toLowerCase().startsWith("win") && drivenotdef != null && drivenotdef.equals("true"))

            {

                String drive = project.getProperty("build.drive");

                try {

                    if (drive != null) {

                        Runtime.getRuntime().exec("subst /d " + drive);

                    }

                } catch (java.io.IOException e) {

                    e = null; // ignoring the error

                }

            }

        }

        public void buildStarted(BuildEvent event) { }

        public void targetStarted(BuildEvent event) { }

        public void targetFinished(BuildEvent event) { }

        public void taskStarted(BuildEvent event) { }

        public void taskFinished(BuildEvent event) { }

        public void messageLogged(BuildEvent event) { }

    }

    private void displayHelp(Project project, String[] targetNames, String firstTarget)

    {

        if (targetNames.length > 1)

        {

            project.setProperty("help.target", targetNames[1]);

        }

        // Set Emacs mode to true for all listeners, so that help text does

        // not have [echo] at the start of each line

        Iterator iter = project.getBuildListeners().iterator();

        while (iter.hasNext())

        {

            BuildListener listener = (BuildListener) iter.next();

            if (listener instanceof BuildLogger)

            {

                BuildLogger logger = (BuildLogger) listener;

                logger.setEmacsMode(true);

            }

        }

        // Run the 'help' target

        project.executeTarget(firstTarget);

    }

}