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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) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Filter.php 8434 2008-02-27 19:15:13Z darby $
*/
/**
* @see Zend_Filter_Interface
*/
require_once 'Zend/Filter/Interface.php';
/**
* @category Zend
* @package Zend_Filter
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Filter implements Zend_Filter_Interface
{
/**
* Filter chain
*
* @var array
*/
protected $_filters = array();
/**
* Adds a filter to the end of the chain
*
* @param Zend_Filter_Interface $filter
* @return Zend_Filter Provides a fluent interface
*/
public function addFilter(Zend_Filter_Interface $filter)
{
$this->_filters[] = $filter;
return $this;
}
/**
* Returns $value filtered through each filter in the chain
*
* Filters are run in the order in which they were added to the chain (FIFO)
*
* @param mixed $value
* @return mixed
*/
public function filter($value)
{
$valueFiltered = $value;
foreach ($this->_filters as $filter) {
$valueFiltered = $filter->filter($valueFiltered);
}
return $valueFiltered;
}
/**
* Returns a value filtered through a specified filter class, without requiring separate
* instantiation of the filter object.
*
* The first argument of this method is a data input value, that you would have filtered.
* The second argument is a string, which corresponds to the basename of the filter class,
* relative to the Zend_Filter namespace. This method automatically loads the class,
* creates an instance, and applies the filter() method to the data input. You can also pass
* an array of constructor arguments, if they are needed for the filter class.
*
* @param mixed $value
* @param string $classBaseName
* @param array $args OPTIONAL
* @param array|string $namespaces OPTIONAL
* @return mixed
* @throws Zend_Filter_Exception
*/
public static function get($value, $classBaseName, array $args = array(), $namespaces = array())
{
require_once 'Zend/Loader.php';
$namespaces = array_merge(array('Zend_Filter'), (array) $namespaces);
foreach ($namespaces as $namespace) {
$className = $namespace . '_' . ucfirst($classBaseName);
try {
@Zend_Loader::loadClass($className);
} catch (Zend_Exception $ze) {
continue;
}
$class = new ReflectionClass($className);
if ($class->implementsInterface('Zend_Filter_Interface')) {
if ($class->hasMethod('__construct')) {
$object = $class->newInstanceArgs($args);
} else {
$object = $class->newInstance();
}
return $object->filter($value);
}
}
require_once 'Zend/Filter/Exception.php';
throw new Zend_Filter_Exception("Filter class not found from basename '$classBaseName'");
}
}
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