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\Serializer\Normalizer;
Chris@0: 
Chris@0: use Symfony\Component\Serializer\Exception\InvalidArgumentException;
Chris@0: use Symfony\Component\Serializer\Exception\UnexpectedValueException;
Chris@0: 
Chris@0: /**
Chris@0:  * Normalizes an object implementing the {@see \DateTimeInterface} to a date string.
Chris@0:  * Denormalizes a date string to an instance of {@see \DateTime} or {@see \DateTimeImmutable}.
Chris@0:  *
Chris@0:  * @author Kévin Dunglas <dunglas@gmail.com>
Chris@0:  */
Chris@0: class DateTimeNormalizer implements NormalizerInterface, DenormalizerInterface
Chris@0: {
Chris@0:     const FORMAT_KEY = 'datetime_format';
Chris@0: 
Chris@0:     /**
Chris@0:      * @var string
Chris@0:      */
Chris@0:     private $format;
Chris@0: 
Chris@0:     /**
Chris@0:      * @param string $format
Chris@0:      */
Chris@0:     public function __construct($format = \DateTime::RFC3339)
Chris@0:     {
Chris@0:         $this->format = $format;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      *
Chris@0:      * @throws InvalidArgumentException
Chris@0:      */
Chris@0:     public function normalize($object, $format = null, array $context = array())
Chris@0:     {
Chris@0:         if (!$object instanceof \DateTimeInterface) {
Chris@0:             throw new InvalidArgumentException('The object must implement the "\DateTimeInterface".');
Chris@0:         }
Chris@0: 
Chris@0:         $format = isset($context[self::FORMAT_KEY]) ? $context[self::FORMAT_KEY] : $this->format;
Chris@0: 
Chris@0:         return $object->format($format);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function supportsNormalization($data, $format = null)
Chris@0:     {
Chris@0:         return $data instanceof \DateTimeInterface;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      *
Chris@0:      * @throws UnexpectedValueException
Chris@0:      */
Chris@0:     public function denormalize($data, $class, $format = null, array $context = array())
Chris@0:     {
Chris@0:         $dateTimeFormat = isset($context[self::FORMAT_KEY]) ? $context[self::FORMAT_KEY] : null;
Chris@0: 
Chris@0:         if (null !== $dateTimeFormat) {
Chris@0:             $object = \DateTime::class === $class ? \DateTime::createFromFormat($dateTimeFormat, $data) : \DateTimeImmutable::createFromFormat($dateTimeFormat, $data);
Chris@0: 
Chris@0:             if (false !== $object) {
Chris@0:                 return $object;
Chris@0:             }
Chris@0: 
Chris@0:             $dateTimeErrors = \DateTime::class === $class ? \DateTime::getLastErrors() : \DateTimeImmutable::getLastErrors();
Chris@0: 
Chris@0:             throw new UnexpectedValueException(sprintf(
Chris@0:                 'Parsing datetime string "%s" using format "%s" resulted in %d errors:'."\n".'%s',
Chris@0:                 $data,
Chris@0:                 $dateTimeFormat,
Chris@0:                 $dateTimeErrors['error_count'],
Chris@0:                 implode("\n", $this->formatDateTimeErrors($dateTimeErrors['errors']))
Chris@0:             ));
Chris@0:         }
Chris@0: 
Chris@0:         try {
Chris@0:             return \DateTime::class === $class ? new \DateTime($data) : new \DateTimeImmutable($data);
Chris@0:         } catch (\Exception $e) {
Chris@0:             throw new UnexpectedValueException($e->getMessage(), $e->getCode(), $e);
Chris@0:         }
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function supportsDenormalization($data, $type, $format = null)
Chris@0:     {
Chris@0:         $supportedTypes = array(
Chris@0:             \DateTimeInterface::class => true,
Chris@0:             \DateTimeImmutable::class => true,
Chris@0:             \DateTime::class => true,
Chris@0:         );
Chris@0: 
Chris@0:         return isset($supportedTypes[$type]);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Formats datetime errors.
Chris@0:      *
Chris@0:      * @param array $errors
Chris@0:      *
Chris@0:      * @return string[]
Chris@0:      */
Chris@0:     private function formatDateTimeErrors(array $errors)
Chris@0:     {
Chris@0:         $formattedErrors = array();
Chris@0: 
Chris@0:         foreach ($errors as $pos => $message) {
Chris@0:             $formattedErrors[] = sprintf('at position %d: %s', $pos, $message);
Chris@0:         }
Chris@0: 
Chris@0:         return $formattedErrors;
Chris@0:     }
Chris@0: }