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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: Callback.php 20096 2010-01-06 02:05:09Z bkarwin $
*/
/**
* @see Zend_Filter_Interface
*/
require_once 'Zend/Filter/Interface.php';
/**
* @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_Callback implements Zend_Filter_Interface
{
/**
* Callback in a call_user_func format
*
* @var string|array
*/
protected $_callback = null;
/**
* Default options to set for the filter
*
* @var mixed
*/
protected $_options = null;
/**
* Constructor
*
* @param string|array $callback Callback in a call_user_func format
* @param mixed $options (Optional) Default options for this filter
*/
public function __construct($options)
{
if ($options instanceof Zend_Config) {
$options = $options->toArray();
} else if (!is_array($options) || !array_key_exists('callback', $options)) {
$options = func_get_args();
$temp['callback'] = array_shift($options);
if (!empty($options)) {
$temp['options'] = array_shift($options);
}
$options = $temp;
}
if (!array_key_exists('callback', $options)) {
require_once 'Zend/Filter/Exception.php';
throw new Zend_Filter_Exception('Missing callback to use');
}
$this->setCallback($options['callback']);
if (array_key_exists('options', $options)) {
$this->setOptions($options['options']);
}
}
/**
* Returns the set callback
*
* @return string|array Set callback
*/
public function getCallback()
{
return $this->_callback;
}
/**
* Sets a new callback for this filter
*
* @param unknown_type $callback
* @return unknown
*/
public function setCallback($callback, $options = null)
{
if (!is_callable($callback)) {
require_once 'Zend/Filter/Exception.php';
throw new Zend_Filter_Exception('Callback can not be accessed');
}
$this->_callback = $callback;
$this->setOptions($options);
return $this;
}
/**
* Returns the set default options
*
* @return mixed
*/
public function getOptions()
{
return $this->_options;
}
/**
* Sets new default options to the callback filter
*
* @param mixed $options Default options to set
* @return Zend_Filter_Callback
*/
public function setOptions($options)
{
$this->_options = $options;
return $this;
}
/**
* Calls the filter per callback
*
* @param $value mixed Options for the set callback
* @return mixed Result from the filter which was callbacked
*/
public function filter($value)
{
$options = array();
if ($this->_options !== null) {
if (!is_array($this->_options)) {
$options = array($this->_options);
} else {
$options = $this->_options;
}
}
array_unshift($options, $value);
return call_user_func_array($this->_callback, $options);
}
}
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