Chris@0: <?php
Chris@0: 
Chris@0: /*
Chris@0:  * This file is part of the Symfony package.
Chris@0:  *
Chris@0:  * (c) Fabien Potencier <fabien@symfony.com>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace Symfony\Component\Validator\Constraints;
Chris@0: 
Chris@0: use Symfony\Component\Validator\Constraint;
Chris@0: use Symfony\Component\Validator\ConstraintValidator;
Chris@0: use Symfony\Component\Validator\Exception\UnexpectedTypeException;
Chris@0: 
Chris@0: /**
Chris@0:  * @author Bernhard Schussek <bschussek@gmail.com>
Chris@0:  */
Chris@0: class DateValidator extends ConstraintValidator
Chris@0: {
Chris@0:     const PATTERN = '/^(\d{4})-(\d{2})-(\d{2})$/';
Chris@0: 
Chris@0:     /**
Chris@0:      * Checks whether a date is valid.
Chris@0:      *
Chris@0:      * @param int $year  The year
Chris@0:      * @param int $month The month
Chris@0:      * @param int $day   The day
Chris@0:      *
Chris@0:      * @return bool Whether the date is valid
Chris@0:      *
Chris@0:      * @internal
Chris@0:      */
Chris@0:     public static function checkDate($year, $month, $day)
Chris@0:     {
Chris@0:         return checkdate($month, $day, $year);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function validate($value, Constraint $constraint)
Chris@0:     {
Chris@0:         if (!$constraint instanceof Date) {
Chris@0:             throw new UnexpectedTypeException($constraint, __NAMESPACE__.'\Date');
Chris@0:         }
Chris@0: 
Chris@0:         if (null === $value || '' === $value || $value instanceof \DateTimeInterface) {
Chris@0:             return;
Chris@0:         }
Chris@0: 
Chris@17:         if (!is_scalar($value) && !(\is_object($value) && method_exists($value, '__toString'))) {
Chris@0:             throw new UnexpectedTypeException($value, 'string');
Chris@0:         }
Chris@0: 
Chris@0:         $value = (string) $value;
Chris@0: 
Chris@0:         if (!preg_match(static::PATTERN, $value, $matches)) {
Chris@0:             $this->context->buildViolation($constraint->message)
Chris@0:                 ->setParameter('{{ value }}', $this->formatValue($value))
Chris@0:                 ->setCode(Date::INVALID_FORMAT_ERROR)
Chris@0:                 ->addViolation();
Chris@0: 
Chris@0:             return;
Chris@0:         }
Chris@0: 
Chris@0:         if (!self::checkDate($matches[1], $matches[2], $matches[3])) {
Chris@0:             $this->context->buildViolation($constraint->message)
Chris@0:                 ->setParameter('{{ value }}', $this->formatValue($value))
Chris@0:                 ->setCode(Date::INVALID_DATE_ERROR)
Chris@0:                 ->addViolation();
Chris@0:         }
Chris@0:     }
Chris@0: }