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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_Validate
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id$
*/
/**
* @see Zend_Validate_Abstract
*/
require_once 'Zend/Validate/Abstract.php';
/**
* @category Zend
* @package Zend_Validate
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Validate_Callback extends Zend_Validate_Abstract
{
/**
* Invalid callback
*/
const INVALID_CALLBACK = 'callbackInvalid';
/**
* Invalid value
*/
const INVALID_VALUE = 'callbackValue';
/**
* Validation failure message template definitions
*
* @var array
*/
protected $_messageTemplates = array(
self::INVALID_VALUE => "'%value%' is not valid",
self::INVALID_CALLBACK => "An exception has been raised within the callback",
);
/**
* Callback in a call_user_func format
*
* @var string|array
*/
protected $_callback = null;
/**
* Default options to set for the filter
*
* @var mixed
*/
protected $_options = array();
/**
* Sets validator options
*
* @param string|array $callback
* @param mixed $max
* @param boolean $inclusive
* @return void
*/
public function __construct($callback = null)
{
if (is_callable($callback)) {
$this->setCallback($callback);
} elseif (is_array($callback)) {
if (isset($callback['callback'])) {
$this->setCallback($callback['callback']);
}
if (isset($callback['options'])) {
$this->setOptions($callback['options']);
}
}
if (null === ($initializedCallack = $this->getCallback())) {
require_once 'Zend/Validate/Exception.php';
throw new Zend_Validate_Exception('No callback registered');
}
}
/**
* Returns the set callback
*
* @return mixed
*/
public function getCallback()
{
return $this->_callback;
}
/**
* Sets the callback
*
* @param string|array $callback
* @return Zend_Validate_Callback Provides a fluent interface
*/
public function setCallback($callback)
{
if (!is_callable($callback)) {
require_once 'Zend/Validate/Exception.php';
throw new Zend_Validate_Exception('Invalid callback given');
}
$this->_callback = $callback;
return $this;
}
/**
* Returns the set options for the callback
*
* @return mixed
*/
public function getOptions()
{
return $this->_options;
}
/**
* Sets options for the callback
*
* @param mixed $max
* @return Zend_Validate_Callback Provides a fluent interface
*/
public function setOptions($options)
{
$this->_options = (array) $options;
return $this;
}
/**
* Defined by Zend_Validate_Interface
*
* Returns true if and only if the set callback returns
* for the provided $value
*
* @param mixed $value
* @return boolean
*/
public function isValid($value)
{
$this->_setValue($value);
$options = $this->getOptions();
$callback = $this->getCallback();
$args = func_get_args();
$options = array_merge($args, $options);
try {
if (!call_user_func_array($callback, $options)) {
$this->_error(self::INVALID_VALUE);
return false;
}
} catch (Exception $e) {
$this->_error(self::INVALID_CALLBACK);
return false;
}
return true;
}
}
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