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<?php
/**
* @package Joomla.Platform
* @subpackage Form
*
* @copyright Copyright (C) 2005 - 2015 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('JPATH_PLATFORM') or die;
use Joomla\Registry\Registry;
// Detect if we have full UTF-8 and unicode PCRE support.
if (!defined('JCOMPAT_UNICODE_PROPERTIES'))
{
define('JCOMPAT_UNICODE_PROPERTIES', (bool) @preg_match('/\pL/u', 'a'));
}
/**
* Form Rule class for the Joomla Platform.
*
* @since 11.1
*/
class JFormRule
{
/**
* The regular expression to use in testing a form field value.
*
* @var string
* @since 11.1
*/
protected $regex;
/**
* The regular expression modifiers to use when testing a form field value.
*
* @var string
* @since 11.1
*/
protected $modifiers;
/**
* Method to test the value.
*
* @param SimpleXMLElement $element The SimpleXMLElement object representing the <field /> tag for the form field object.
* @param mixed $value The form field value to validate.
* @param string $group The field name group control value. This acts as as an array container for the field.
* For example if the field has name="foo" and the group value is set to "bar" then the
* full field name would end up being "bar[foo]".
* @param Registry $input An optional Registry object with the entire data set to validate against the entire form.
* @param JForm $form The form object for which the field is being tested.
*
* @return boolean True if the value is valid, false otherwise.
*
* @since 11.1
* @throws UnexpectedValueException if rule is invalid.
*/
public function test(SimpleXMLElement $element, $value, $group = null, Registry $input = null, JForm $form = null)
{
// Check for a valid regex.
if (empty($this->regex))
{
throw new UnexpectedValueException(sprintf('%s has invalid regex.', get_class($this)));
}
// Add unicode property support if available.
if (JCOMPAT_UNICODE_PROPERTIES)
{
$this->modifiers = (strpos($this->modifiers, 'u') !== false) ? $this->modifiers : $this->modifiers . 'u';
}
// Test the value against the regular expression.
if (preg_match(chr(1) . $this->regex . chr(1) . $this->modifiers, $value))
{
return true;
}
return false;
}
}