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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) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Compress.php 20096 2010-01-06 02:05:09Z bkarwin $
*/
/**
* @see Zend_Filter_Interface
*/
require_once 'Zend/Filter/Interface.php';
/**
* Compresses a given string
*
* @category Zend
* @package Zend_Filter
* @copyright Copyright (c) 2005-2010 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);
}
}
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