vendor/symfony/form/Symfony/Component/Form/Extension/Core/DataTransformer/DateTimeToRfc3339Transformer.php

   1 <?php
   2
   3 /*
   4  * This file is part of the Symfony package.
   5  *
   6  * (c) Fabien Potencier <fabien@symfony.com>
   7  *
   8  * For the full copyright and license information, please view the LICENSE
   9  * file that was distributed with this source code.
  10  */
  11
  12 namespace Symfony\Component\Form\Extension\Core\DataTransformer;
  13
  14 use Symfony\Component\Form\Exception\TransformationFailedException;
  15
  16 /**
  17  * @author Bernhard Schussek <bschussek@gmail.com>
  18  */
  19 class DateTimeToRfc3339Transformer extends BaseDateTimeTransformer
  20 {
  21     /**
  22      * {@inheritDoc}
  23      */
  24     public function transform($dateTime)
  25     {
  26         if (null === $dateTime) {
  27             return '';
  28         }
  29
  30         if (!$dateTime instanceof \DateTime) {
  31             throw new TransformationFailedException('Expected a \DateTime.');
  32         }
  33
  34         if ($this->inputTimezone !== $this->outputTimezone) {
  35             $dateTime = clone $dateTime;
  36             $dateTime->setTimezone(new \DateTimeZone($this->outputTimezone));
  37         }
  38
  39         return preg_replace('/\+00:00$/', 'Z', $dateTime->format('c'));
  40     }
  41
  42     /**
  43      * {@inheritDoc}
  44      */
  45     public function reverseTransform($rfc3339)
  46     {
  47         if (!is_string($rfc3339)) {
  48             throw new TransformationFailedException('Expected a string.');
  49         }
  50
  51         if ('' === $rfc3339) {
  52             return null;
  53         }
  54
  55         try {
  56             $dateTime = new \DateTime($rfc3339);
  57         } catch (\Exception $e) {
  58             throw new TransformationFailedException($e->getMessage(), $e->getCode(), $e);
  59         }
  60
  61         if ($this->outputTimezone !== $this->inputTimezone) {
  62             try {
  63                 $dateTime->setTimezone(new \DateTimeZone($this->inputTimezone));
  64             } catch (\Exception $e) {
  65                 throw new TransformationFailedException($e->getMessage(), $e->getCode(), $e);
  66             }
  67         }
  68
  69         if (preg_match('/(\d{4})-(\d{2})-(\d{2})/', $rfc3339, $matches)) {
  70             if (!checkdate($matches[2], $matches[3], $matches[1])) {
  71                 throw new TransformationFailedException(sprintf(
  72                     'The date "%s-%s-%s" is not a valid date.',
  73                     $matches[1],
  74                     $matches[2],
  75                     $matches[3]
  76                 ));
  77             }
  78         }
  79
  80         return $dateTime;
  81     }
  82 }