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 <?php
 /**
  * Zend Framework
  *
  * LICENSE
  *
  * This source file is subject to the new BSD license that is bundled
  * with this package in the file LICENSE.txt.
  * It is also available through the world-wide-web at this URL:
  * http://framework.zend.com/license/new-bsd
  * 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@zend.com so we can send you a copy immediately.
  *
  * @category   Zend
  * @package    Zend_Filter
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 /**
  * @see Zend_Filter_Interface
  */
 // require_once 'Zend/Filter/Interface.php';
 
 /**
  * @see Zend_Loader
  */
 // require_once 'Zend/Loader.php';
 
 /**
  * Encrypts a given string
  *
  * @category   Zend
  * @package    Zend_Filter
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Filter_Encrypt implements Zend_Filter_Interface
 {
     /**
      * Encryption adapter
      */
     protected $_adapter;
 
     /**
      * Class constructor
      *
      * @param string|array $options (Optional) Options to set, if null mcrypt is used
      */
     public function __construct($options = null)
     {
         if ($options instanceof Zend_Config) {
             $options = $options->toArray();
         }
 
         $this->setAdapter($options);
     }
 
     /**
      * Returns the name of the set adapter
      *
      * @return string
      */
     public function getAdapter()
     {
         return $this->_adapter->toString();
     }
 
     /**
      * Sets new encryption options
      *
      * @param  string|array $options (Optional) Encryption options
      * @return Zend_Filter_Encrypt
      */
     public function setAdapter($options = null)
     {
         if (is_string($options)) {
             $adapter = $options;
         } else if (isset($options['adapter'])) {
             $adapter = $options['adapter'];
             unset($options['adapter']);
         } else {
             $adapter = 'Mcrypt';
         }
 
         if (!is_array($options)) {
             $options = array();
         }
 
         if (Zend_Loader::isReadable('Zend/Filter/Encrypt/' . ucfirst($adapter). '.php')) {
             $adapter = 'Zend_Filter_Encrypt_' . ucfirst($adapter);
         }
 
         if (!class_exists($adapter)) {
             Zend_Loader::loadClass($adapter);
         }
 
         $this->_adapter = new $adapter($options);
         if (!$this->_adapter instanceof Zend_Filter_Encrypt_Interface) {
             // require_once 'Zend/Filter/Exception.php';
             throw new Zend_Filter_Exception("Encoding adapter '" . $adapter . "' does not implement Zend_Filter_Encrypt_Interface");
         }
 
         return $this;
     }
 
     /**
      * Calls adapter methods
      *
      * @param string       $method  Method to call
      * @param string|array $options Options for this method
      */
     public function __call($method, $options)
     {
         $part = substr($method, 0, 3);
         if ((($part != 'get') and ($part != 'set')) or !method_exists($this->_adapter, $method)) {
             // require_once 'Zend/Filter/Exception.php';
             throw new Zend_Filter_Exception("Unknown method '{$method}'");
         }
 
         return call_user_func_array(array($this->_adapter, $method), $options);
     }
 
     /**
      * Defined by Zend_Filter_Interface
      *
      * Encrypts the content $value with the defined settings
      *
      * @param  string $value Content to encrypt
      * @return string The encrypted content
      */
     public function filter($value)
     {
         return $this->_adapter->encrypt($value);
     }
 }