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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';
 
 /**
  * Compresses 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_Compress implements Zend_Filter_Interface
 {
     /**
      * Compression adapter
      */
     protected $_adapter = 'Gz';
 
     /**
      * Compression adapter constructor options
      */
     protected $_adapterOptions = array();
 
     /**
      * Class constructor
      *
      * @param string|array $options (Optional) Options to set
      */
     public function __construct($options = null)
     {
         if ($options instanceof Zend_Config) {
             $options = $options->toArray();
         }
         if (is_string($options)) {
             $this->setAdapter($options);
         } elseif ($options instanceof Zend_Filter_Compress_CompressInterface) {
             $this->setAdapter($options);
         } elseif (is_array($options)) {
             $this->setOptions($options);
         }
     }
 
     /**
      * Set filter setate
      *
      * @param  array $options
      * @return Zend_Filter_Compress
      */
     public function setOptions(array $options)
     {
         foreach ($options as $key => $value) {
             if ($key == 'options') {
                 $key = 'adapterOptions';
             }
             $method = 'set' . ucfirst($key);
             if (method_exists($this, $method)) {
                 $this->$method($value);
             }
         }
         return $this;
     }
 
     /**
      * Returns the current adapter, instantiating it if necessary
      *
      * @return string
      */
     public function getAdapter()
     {
         if ($this->_adapter instanceof Zend_Filter_Compress_CompressInterface) {
             return $this->_adapter;
         }
 
         $adapter = $this->_adapter;
         $options = $this->getAdapterOptions();
         if (!class_exists($adapter)) {
             // require_once 'Zend/Loader.php';
             if (Zend_Loader::isReadable('Zend/Filter/Compress/' . ucfirst($adapter) . '.php')) {
                 $adapter = 'Zend_Filter_Compress_' . ucfirst($adapter);
             }
             Zend_Loader::loadClass($adapter);
         }
 
         $this->_adapter = new $adapter($options);
         if (!$this->_adapter instanceof Zend_Filter_Compress_CompressInterface) {
             // require_once 'Zend/Filter/Exception.php';
             throw new Zend_Filter_Exception("Compression adapter '" . $adapter . "' does not implement Zend_Filter_Compress_CompressInterface");
         }
         return $this->_adapter;
     }
 
     /**
      * Retrieve adapter name
      *
      * @return string
      */
     public function getAdapterName()
     {
         return $this->getAdapter()->toString();
     }
 
     /**
      * Sets compression adapter
      *
      * @param  string|Zend_Filter_Compress_CompressInterface $adapter Adapter to use
      * @return Zend_Filter_Compress
      */
     public function setAdapter($adapter)
     {
         if ($adapter instanceof Zend_Filter_Compress_CompressInterface) {
             $this->_adapter = $adapter;
             return $this;
         }
         if (!is_string($adapter)) {
             // require_once 'Zend/Filter/Exception.php';
             throw new Zend_Filter_Exception('Invalid adapter provided; must be string or instance of Zend_Filter_Compress_CompressInterface');
         }
         $this->_adapter = $adapter;
 
         return $this;
     }
 
     /**
      * Retrieve adapter options
      *
      * @return array
      */
     public function getAdapterOptions()
     {
         return $this->_adapterOptions;
     }
 
     /**
      * Set adapter options
      *
      * @param  array $options
      * @return void
      */
     public function setAdapterOptions(array $options)
     {
         $this->_adapterOptions = $options;
         return $this;
     }
 
     /**
      * Calls adapter methods
      *
      * @param string       $method  Method to call
      * @param string|array $options Options for this method
      */
     public function __call($method, $options)
     {
         $adapter = $this->getAdapter();
         if (!method_exists($adapter, $method)) {
             // require_once 'Zend/Filter/Exception.php';
             throw new Zend_Filter_Exception("Unknown method '{$method}'");
         }
 
         return call_user_func_array(array($adapter, $method), $options);
     }
 
     /**
      * Defined by Zend_Filter_Interface
      *
      * Compresses the content $value with the defined settings
      *
      * @param  string $value Content to compress
      * @return string The compressed content
      */
     public function filter($value)
     {
         return $this->getAdapter()->compress($value);
     }
 }