153 Zeilen
3.9 KiB
PHP
153 Zeilen
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) 2005-2011 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 $Id$
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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) 2005-2011 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_Callback implements Zend_Filter_Interface
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{
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/**
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* Callback in a call_user_func format
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*
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* @var string|array
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*/
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protected $_callback = null;
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/**
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* Default options to set for the filter
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*
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* @var mixed
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*/
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protected $_options = null;
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/**
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* Constructor
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*
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* @param string|array $callback Callback in a call_user_func format
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* @param mixed $options (Optional) Default options for this filter
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*/
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public function __construct($options)
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{
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if ($options instanceof Zend_Config) {
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$options = $options->toArray();
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} else if (!is_array($options) || !array_key_exists('callback', $options)) {
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$options = func_get_args();
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$temp['callback'] = array_shift($options);
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if (!empty($options)) {
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$temp['options'] = array_shift($options);
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}
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$options = $temp;
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}
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if (!array_key_exists('callback', $options)) {
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require_once 'Zend/Filter/Exception.php';
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throw new Zend_Filter_Exception('Missing callback to use');
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}
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$this->setCallback($options['callback']);
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if (array_key_exists('options', $options)) {
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$this->setOptions($options['options']);
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}
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}
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/**
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* Returns the set callback
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*
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* @return string|array Set callback
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*/
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public function getCallback()
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{
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return $this->_callback;
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}
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/**
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* Sets a new callback for this filter
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*
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* @param unknown_type $callback
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* @return unknown
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*/
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public function setCallback($callback, $options = null)
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{
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if (!is_callable($callback)) {
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require_once 'Zend/Filter/Exception.php';
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throw new Zend_Filter_Exception('Callback can not be accessed');
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}
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$this->_callback = $callback;
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$this->setOptions($options);
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return $this;
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}
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/**
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* Returns the set default options
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*
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* @return mixed
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*/
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public function getOptions()
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{
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return $this->_options;
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}
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/**
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* Sets new default options to the callback filter
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*
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* @param mixed $options Default options to set
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* @return Zend_Filter_Callback
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*/
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public function setOptions($options)
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{
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$this->_options = $options;
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return $this;
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}
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/**
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* Calls the filter per callback
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*
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* @param mixed $value Options for the set callback
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* @return mixed Result from the filter which was callbacked
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*/
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public function filter($value)
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{
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$options = array();
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if ($this->_options !== null) {
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if (!is_array($this->_options)) {
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$options = array($this->_options);
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} else {
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$options = $this->_options;
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}
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}
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array_unshift($options, $value);
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return call_user_func_array($this->_callback, $options);
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}
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}
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