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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
* @Target({"PROPERTY", "METHOD", "ANNOTATION"})
*
* @author Bernhard Schussek <bschussek@gmail.com>
*/
class Regex extends Constraint
{
const REGEX_FAILED_ERROR = 'de1e3db3-5ed4-4941-aae4-59f3667cc3a3';
protected static $errorNames = array(
self::REGEX_FAILED_ERROR => 'REGEX_FAILED_ERROR',
);
public $message = 'This value is not valid.';
public $pattern;
public $htmlPattern;
public $match = true;
/**
* {@inheritdoc}
*/
public function getDefaultOption()
{
return 'pattern';
}
/**
* {@inheritdoc}
*/
public function getRequiredOptions()
{
return array('pattern');
}
/**
* Converts the htmlPattern to a suitable format for HTML5 pattern.
* Example: /^[a-z]+$/ 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.
*
* @see http://dev.w3.org/html5/spec/single-page.html#the-pattern-attribute
*
* @return string|null
*/
public function getHtmlPattern()
{
// If htmlPattern is specified, use it
if (null !== $this->htmlPattern) {
return empty($this->htmlPattern)
? null
: $this->htmlPattern;
}
// Quit if delimiters not at very beginning/end (e.g. when options are passed)
if ($this->pattern[0] !== $this->pattern[\strlen($this->pattern) - 1]) {
return;
}
$delimiter = $this->pattern[0];
// Unescape the delimiter
$pattern = str_replace('\\'.$delimiter, $delimiter, substr($this->pattern, 1, -1));
// If the pattern is inverted, we can simply wrap it in
// ((?!pattern).)*
if (!$this->match) {
return '((?!'.$pattern.').)*';
}
// If the pattern contains an or statement, wrap the pattern in
// .*(pattern).* and quit. Otherwise we'd need to parse the pattern
if (false !== strpos($pattern, '|')) {
return '.*('.$pattern.').*';
}
// Trim leading ^, otherwise prepend .*
$pattern = '^' === $pattern[0] ? substr($pattern, 1) : '.*'.$pattern;
// Trim trailing $, otherwise append .*
$pattern = '$' === $pattern[\strlen($pattern) - 1] ? substr($pattern, 0, -1) : $pattern.'.*';
return $pattern;
}
}
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