/*

* 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.installer.utils;

import com.nokia.mj.impl.installer.utils.InstallerException;

import com.nokia.mj.impl.installer.utils.Log;

import com.nokia.mj.impl.utils.Tokenizer;

import java.util.Hashtable;

/**

 * Class for handling command line arguments.

 */

public class Args

{

    private Hashtable iArgs = null;

    public Args(String[] aArgs)

    {

        iArgs = new Hashtable();

        for (int i = 0; i < aArgs.length; i++)

        {

            if (aArgs[i].startsWith("-"))

            {

                String arg = aArgs[i].substring(1);

                String value = null;

                int separator = arg.indexOf("=");

                if (separator > 0)

                {

                    value = arg.substring(separator+1);

                    arg = arg.substring(0, separator);

                }

                else

                {

                    value = ""; // Arg is present without value.

                }

                //if (i+1 < aArgs.length) {

                //    value = aArgs[i+1];

                //} else {

                //    value = ""; // Arg is present without value.

                //}

                iArgs.put(arg, value);

                //Log.log("Args: " + arg + "=" + value);

            }

        }

    }

    /**

     * Returns command line argument with the specified name.

     * If argument is not found, returns null.

     */

    public String get(String aName)

    {

        String arg = (String)iArgs.get(aName);

        if (arg != null)

        {

            if (arg.length() == 0)

            {

                Log.log("Args: " + aName);

            }

            else

            {

                Log.log("Args: " + aName + "=" + arg);

            }

        }

        return arg;

    }

    /**

     * Returns command line argument with the specified name.

     * If argument is not found, returns default value.

     */

    public String get(String aName, String aDefault)

    {

        String arg = get(aName);

        if (arg == null)

        {

            arg = aDefault;

            if (arg != null)

            {

                if (arg.length() == 0)

                {

                    Log.log("Args: " + aName + " (default)");

                }

                else

                {

                    Log.log("Args: " + aName + "=" + arg + " (default)");

                }

            }

        }

        return arg;

    }

    /**

     * Returns boolean type command line argument with the specified name.

     * If argument is not found, returns null.

     */

    public Boolean getBoolean(String aName)

    {

        Boolean arg = null;

        if (valueContains(aName, "no"))

        {

            Log.log("Args: " + aName + " disabled");

            arg = new Boolean(false);

        }

        else if (valueContains(aName, "yes"))

        {

            Log.log("Args: " + aName + " enabled");

            arg = new Boolean(true);

        }

        return arg;

    }

    /**

     * Returns boolean type command line argument with the specified name.

     * If argument is not found, returns default value.

     */

    public Boolean getBoolean(String aName, Boolean aDefault)

    {

        Boolean arg = getBoolean(aName);

        if (arg == null)

        {

            arg = aDefault;

        }

        return arg;

    }

    /**

     * Returns boolean type command line argument with the specified name.

     * If argument is not found, returns default value.

     */

    public boolean getBoolean(String aName, boolean aDefault)

    {

        Boolean arg = getBoolean(aName);

        if (arg == null)

        {

            return aDefault;

        }

        return arg.booleanValue();

    }

    /**

     * Returns true if command line argument with specified name

     * exists, and if its value contains the specified value part.

     * Value parts are separated with commas, for example argument

     * "-arg=foo,bar" has two value parts.

     */

    public boolean valueContains(String aName, String aValuePart)

    {

        String value = get(aName);

        if (value == null || value.length() == 0)

        {

            return false;

        }

        String[] tokens = Tokenizer.split(value, ",");

        for (int i = 0; i < tokens.length; i++)

        {

            if (tokens[i].equals(aValuePart))

            {

                return true;

            }

        }

        return false;

    }

    /**

     * Returns drive id from given string.

     */

    public static int parseDrive(String aDrive) throws InstallerException

    {

        int drive = -1;

        try

        {

            drive = Integer.parseInt(aDrive);

        }

        catch (NumberFormatException nfe)

        {

            // Drive argument is not a number, assume it is a string

            // of length one indicating drive letter.

        }

        if (drive == -1)

        {

            if (aDrive.length() != 1)

            {

                InstallerException.internalError(

                    "Invalid drive argument: " + aDrive);

            }

            drive = aDrive.toLowerCase().charAt(0) - 'a';

        }

        return drive;

    }

}