/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "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.mj.impl.rt.midp;

import java.util.Hashtable;

/**

 * A Utility class for parsing and storing the arguments provided to the

 * MIDP runtime. It is assumed that the arguments are provided so that

 * there is always a key starting with '-' available and after that the

 * value. Keys without value are not supported.

 */

public final class MainArgs

{

    /**

     * For storing the arguments.

     */

    private Hashtable mArgs;

    /**

     * For storing the application arguments.

     */

    private String[] mAppArgs;

    /*** ----------------------------- PRIVATE ---------------------------- */

    /**

     * Default construtor not allowed.

     */

    private MainArgs()

    {

    }

    /*** ----------------------------- PACKAGE ---------------------------- */

    /**

     * Constructor of the MainArgs. Will parse the given key-value pair

     * arguments into a hash table.

     * @param args Array of arguments.

     */

    public MainArgs(String[] args)

    {

        if (Log.mOn) Log.logI("Parsing args.");

        if (args == null)

        {

            throw new RuntimeException("No arguments provided to main()");

        }

        mArgs = new Hashtable();

        int i = 0;

        for (; i < args.length; ++i)

        {

            if (args[i].equals("-interalArgEnd"))

            {

                ++i;

                break;

            }

            if (i + 1 == args.length)

            {

                throw new RuntimeException("Not equal amount of arguments "+

                                           "provided to main()");

            }

            String argKey = args[i];

            String argValue = args[++i];

            if (!argKey.startsWith("-"))

            {

                throw new RuntimeException("Illegal key " + argKey + "in the" +

                                           "arguments provided to main()");

            }

            if (Log.mOn) Log.logI("  key: " + argKey + ", value:" + argValue);

            mArgs.put(argKey, argValue);

        }

        if (i < args.length)

        {

            int appArgCount = args.length - i;

            mAppArgs = new String[appArgCount];

            System.arraycopy(args, i, mAppArgs, 0, appArgCount);

            for (int j = 0; j < mAppArgs.length; ++j)

            {

                if (Log.mOn) Log.logI("AppArg: " + mAppArgs[j]);

            }

        }

    }

    /**

     * Searches the attribute using the provided key.

     * @param key The search key.

     * @return the value of the attribute if found, otherwise null.

     */

    public String findArgument(String key)

    {

        return (String)mArgs.get(key);

    }

    public String[] getAppArgs()

    {

        return mAppArgs;

    }

}