<?php
/**
 * Bigace - a PHP and MySQL based Web CMS.
 *
 * LICENSE
 *
 * This source file is subject to the new GNU General Public License
 * that is bundled with this package in the file LICENSE.
 * It is also available through the world-wide-web at this URL:
 * http://www.bigace.de/license.html
 *
 * Bigace 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.
 *
 * @category   Bigace
 * @package    Bigace_Zend
 * @subpackage View_Helper
 * @copyright  Copyright (c) 2009-2010 Keleo (http://www.keleo.de)
 * @license    http://www.bigace.de/license.html     GNU Public License
 * @version    $Id$
 */

/**
 * Protectes an email from Email harvester by using Javascript.
 *
 * @category   Bigace
 * @package    Bigace_Zend
 * @subpackage View_Helper
 * @copyright  Copyright (c) 2009-2010 Keleo (http://www.keleo.de)
 * @license    http://www.bigace.de/license.html     GNU Public License
 */
class Bigace_Zend_View_Helper_Email extends Zend_View_Helper_Abstract
{
	/**
	 * Returns a protected email address.
	 * @param string $address the email address
	 * @param unknown_type $text
	 * @param unknown_type $extra
	 * @return unknown_type
	 */
    function email($address, $text = '', $extra = '')
    {
        if(strlen($text) == 0)
            $text = $address;

        $string = 'document.write(\'<a href="mailto:'.$address.'" '.
            $extra.'>'.$text.'</a>\');';

        $jsEncode = '';
        for ($x=0; $x < strlen($string); $x++) {
            $jsEncode .= '%' . bin2hex($string[$x]);
        }

        return '<script type="text/javascript">eval(unescape(\''.
            $jsEncode.'\'))</script>';
    }

}
