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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Validator\Constraints;
use Symfony\Component\Validator\Constraint;
/**
* @Annotation
*
* @author Bernhard Schussek <bschussek@gmail.com>
*
* @api
*/
class Regex extends Constraint
{
public $message = 'This value is not valid.';
public $pattern;
public $htmlPattern = null;
public $match = true;
/**
* {@inheritDoc}
*/
public function getDefaultOption()
{
return 'pattern';
}
/**
* {@inheritDoc}
*/
public function getRequiredOptions()
{
return array('pattern');
}
/**
* Returns htmlPattern if exists or pattern is convertible.
*
* @return string|null
*/
public function getHtmlPattern()
{
// If htmlPattern is specified, use it
if (null !== $this->htmlPattern) {
return empty($this->htmlPattern)
? null
: $this->htmlPattern;
}
return $this->getNonDelimitedPattern();
}
/**
* Converts the htmlPattern to a suitable format for HTML5 pattern.
* Example: /^[a-z]+$/ would be converted to [a-z]+
* However, if options are specified, it cannot be converted
*
* Pattern is also ignored if match=false since the pattern should
* then be reversed before application.
*
* @todo reverse pattern in case match=false as per issue #5307
*
* @link http://dev.w3.org/html5/spec/single-page.html#the-pattern-attribute
*
* @return string|null
*/
private function getNonDelimitedPattern()
{
// If match = false, pattern should not be added to HTML5 validation
if (!$this->match) {
return null;
}
if (preg_match('/^(.)(\^?)(.*?)(\$?)\1$/', $this->pattern, $matches)) {
$delimiter = $matches[1];
$start = empty($matches[2]) ? '.*' : '';
$pattern = $matches[3];
$end = empty($matches[4]) ? '.*' : '';
// Unescape the delimiter in pattern
$pattern = str_replace('\\'.$delimiter, $delimiter, $pattern);
return $start.$pattern.$end;
}
return null;
}
}