116 lines
3.9 KiB
PHP
116 lines
3.9 KiB
PHP
<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Filter
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* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id: Filter.php 15577 2009-05-14 12:43:34Z matthew $
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*/
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/**
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* @see Zend_Filter_Interface
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*/
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require_once 'Zend/Filter/Interface.php';
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/**
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* @category Zend
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* @package Zend_Filter
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* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Filter implements Zend_Filter_Interface
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{
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/**
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* Filter chain
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*
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* @var array
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*/
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protected $_filters = array();
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/**
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* Adds a filter to the end of the chain
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*
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* @param Zend_Filter_Interface $filter
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* @return Zend_Filter Provides a fluent interface
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*/
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public function addFilter(Zend_Filter_Interface $filter)
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{
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$this->_filters[] = $filter;
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return $this;
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}
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/**
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* Returns $value filtered through each filter in the chain
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*
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* Filters are run in the order in which they were added to the chain (FIFO)
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*
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* @param mixed $value
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* @return mixed
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*/
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public function filter($value)
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{
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$valueFiltered = $value;
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foreach ($this->_filters as $filter) {
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$valueFiltered = $filter->filter($valueFiltered);
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}
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return $valueFiltered;
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}
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/**
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* Returns a value filtered through a specified filter class, without requiring separate
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* instantiation of the filter object.
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*
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* The first argument of this method is a data input value, that you would have filtered.
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* The second argument is a string, which corresponds to the basename of the filter class,
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* relative to the Zend_Filter namespace. This method automatically loads the class,
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* creates an instance, and applies the filter() method to the data input. You can also pass
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* an array of constructor arguments, if they are needed for the filter class.
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*
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* @param mixed $value
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* @param string $classBaseName
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* @param array $args OPTIONAL
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* @param array|string $namespaces OPTIONAL
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* @return mixed
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* @throws Zend_Filter_Exception
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*/
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public static function get($value, $classBaseName, array $args = array(), $namespaces = array())
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{
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require_once 'Zend/Loader.php';
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$namespaces = array_merge((array) $namespaces, array('Zend_Filter'));
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foreach ($namespaces as $namespace) {
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$className = $namespace . '_' . ucfirst($classBaseName);
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if (!class_exists($className)) {
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try {
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require_once 'Zend/Loader.php';
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Zend_Loader::loadClass($className);
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} catch (Zend_Exception $ze) {
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continue;
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}
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}
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$class = new ReflectionClass($className);
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if ($class->implementsInterface('Zend_Filter_Interface')) {
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if ($class->hasMethod('__construct')) {
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$object = $class->newInstanceArgs($args);
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} else {
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$object = $class->newInstance();
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}
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return $object->filter($value);
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}
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}
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require_once 'Zend/Filter/Exception.php';
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throw new Zend_Filter_Exception("Filter class not found from basename '$classBaseName'");
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}
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}
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