/**

 * Magento

 *

 * NOTICE OF LICENSE

 *

 * This source file is subject to the Academic Free License (AFL 3.0)

 * that is bundled with this package in the file LICENSE_AFL.txt.

 * It is also available through the world-wide-web at this URL:

 * http://opensource.org/licenses/afl-3.0.php

 * If you did not receive a copy of the license and are unable to

 * obtain it through the world-wide-web, please send an email

 * to license@magentocommerce.com so we can send you a copy immediately.

 *

 * DISCLAIMER

 *

 * Do not edit or add to this file if you wish to upgrade Magento to newer

 * versions in the future. If you wish to customize Magento for your

 * needs please refer to http://www.magentocommerce.com for more information.

 *

 * @copyright  Copyright (c) 2008 Irubin Consulting Inc. DBA Varien (http://www.varien.com)

 * @license    http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)

 */

/*

 * Caudium - An extensible World Wide Web server

 * Copyright C 2002 The Caudium Group

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License as

 * published by the Free Software Foundation; either version 2 of the

 * License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful, but

 * WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

 *

 */



/*

 * base64.js - a JavaScript implementation of the base64 algorithm,

 *             (mostly) as defined in RFC 2045.

 *

 * This is a direct JavaScript reimplementation of the original C code

 * as found in the Exim mail transport agent, by Philip Hazel.

 *

 * $Id: base64.js,v 1.7 2002/07/16 17:21:23 kazmer Exp $

 *

 */





function encode_base64( what )

{

    var base64_encodetable = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

    var result = "";

    var len = what.length;

    var x, y;

    var ptr = 0;



    while( len-- > 0 )

    {

        x = what.charCodeAt( ptr++ );

        result += base64_encodetable.charAt( ( x >> 2 ) & 63 );



        if( len-- <= 0 )

        {

            result += base64_encodetable.charAt( ( x << 4 ) & 63 );

            result += "==";

            break;

        }



        y = what.charCodeAt( ptr++ );

        result += base64_encodetable.charAt( ( ( x << 4 ) | ( ( y >> 4 ) & 15 ) ) & 63 );



        if ( len-- <= 0 )

        {

            result += base64_encodetable.charAt( ( y << 2 ) & 63 );

            result += "=";

            break;

        }



        x = what.charCodeAt( ptr++ );

        result += base64_encodetable.charAt( ( ( y << 2 ) | ( ( x >> 6 ) & 3 ) ) & 63 );

        result += base64_encodetable.charAt( x & 63 );



    }



    return result;

}





function decode_base64( what )

{

    var base64_decodetable = new Array (

        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,

        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,

        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,  62, 255, 255, 255,  63,

         52,  53,  54,  55,  56,  57,  58,  59,  60,  61, 255, 255, 255, 255, 255, 255,

        255,   0,   1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11,  12,  13,  14,

         15,  16,  17,  18,  19,  20,  21,  22,  23,  24,  25, 255, 255, 255, 255, 255,

        255,  26,  27,  28,  29,  30,  31,  32,  33,  34,  35,  36,  37,  38,  39,  40,

         41,  42,  43,  44,  45,  46,  47,  48,  49,  50,  51, 255, 255, 255, 255, 255

    );

    var result = "";

    var len = what.length;

    var x, y;

    var ptr = 0;



    while( !isNaN( x = what.charCodeAt( ptr++ ) ) )

    {

        if( x == 13 || x == 10 )

            continue;



        if( ( x > 127 ) || (( x = base64_decodetable[x] ) == 255) )

            return false;

        if( ( isNaN( y = what.charCodeAt( ptr++ ) ) ) || (( y = base64_decodetable[y] ) == 255) )

            return false;



        result += String.fromCharCode( (x << 2) | (y >> 4) );



        if( (x = what.charCodeAt( ptr++ )) == 61 )

        {

            if( (what.charCodeAt( ptr++ ) != 61) || (!isNaN(what.charCodeAt( ptr ) ) ) )

                return false;

        }

        else

        {

            if( ( x > 127 ) || (( x = base64_decodetable[x] ) == 255) )

                return false;

            result += String.fromCharCode( (y << 4) | (x >> 2) );

            if( (y = what.charCodeAt( ptr++ )) == 61 )

            {

                if( !isNaN(what.charCodeAt( ptr ) ) )

                    return false;

            }

            else

            {

                if( (y > 127) || ((y = base64_decodetable[y]) == 255) )

                    return false;

                result += String.fromCharCode( (x << 6) | y );

            }

        }

    }

    return result;

}



function wrap76( what )

{

    var result = "";

    var i;



    for(i=0; i < what.length; i+=76)

    {

        result += what.substring(i, i+76) + String.fromCharCode(13) + String.fromCharCode(10);

    }

    return result;

}