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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\Serializer\Normalizer;
use Symfony\Component\Serializer\Exception\InvalidArgumentException;
use Symfony\Component\Serializer\Exception\NotNormalizableValueException;
/**
* Normalizes an object implementing the {@see \DateTimeInterface} to a date string.
* Denormalizes a date string to an instance of {@see \DateTime} or {@see \DateTimeImmutable}.
*
* @author Kévin Dunglas <dunglas@gmail.com>
*/
class DateTimeNormalizer implements NormalizerInterface, DenormalizerInterface, CacheableSupportsMethodInterface
{
const FORMAT_KEY = 'datetime_format';
const TIMEZONE_KEY = 'datetime_timezone';
private $defaultContext = [
self::FORMAT_KEY => \DateTime::RFC3339,
self::TIMEZONE_KEY => null,
];
private static $supportedTypes = [
\DateTimeInterface::class => true,
\DateTimeImmutable::class => true,
\DateTime::class => true,
];
public function __construct(array $defaultContext = [])
{
$this->defaultContext = array_merge($this->defaultContext, $defaultContext);
}
/**
* {@inheritdoc}
*
* @throws InvalidArgumentException
*/
public function normalize($object, string $format = null, array $context = [])
{
if (!$object instanceof \DateTimeInterface) {
throw new InvalidArgumentException('The object must implement the "\DateTimeInterface".');
}
$dateTimeFormat = $context[self::FORMAT_KEY] ?? $this->defaultContext[self::FORMAT_KEY];
$timezone = $this->getTimezone($context);
if (null !== $timezone) {
$object = clone $object;
$object = $object->setTimezone($timezone);
}
return $object->format($dateTimeFormat);
}
/**
* {@inheritdoc}
*/
public function supportsNormalization($data, string $format = null)
{
return $data instanceof \DateTimeInterface;
}
/**
* {@inheritdoc}
*
* @throws NotNormalizableValueException
*/
public function denormalize($data, string $type, string $format = null, array $context = [])
{
$dateTimeFormat = $context[self::FORMAT_KEY] ?? null;
$timezone = $this->getTimezone($context);
if ('' === $data || null === $data) {
throw new NotNormalizableValueException('The data is either an empty string or null, you should pass a string that can be parsed with the passed format or a valid DateTime string.');
}
if (null !== $dateTimeFormat) {
$object = \DateTime::class === $type ? \DateTime::createFromFormat($dateTimeFormat, $data, $timezone) : \DateTimeImmutable::createFromFormat($dateTimeFormat, $data, $timezone);
if (false !== $object) {
return $object;
}
$dateTimeErrors = \DateTime::class === $type ? \DateTime::getLastErrors() : \DateTimeImmutable::getLastErrors();
throw new NotNormalizableValueException(sprintf('Parsing datetime string "%s" using format "%s" resulted in %d errors: ', $data, $dateTimeFormat, $dateTimeErrors['error_count'])."\n".implode("\n", $this->formatDateTimeErrors($dateTimeErrors['errors'])));
}
try {
return \DateTime::class === $type ? new \DateTime($data, $timezone) : new \DateTimeImmutable($data, $timezone);
} catch (\Exception $e) {
throw new NotNormalizableValueException($e->getMessage(), $e->getCode(), $e);
}
}
/**
* {@inheritdoc}
*/
public function supportsDenormalization($data, string $type, string $format = null)
{
return isset(self::$supportedTypes[$type]);
}
/**
* {@inheritdoc}
*/
public function hasCacheableSupportsMethod(): bool
{
return __CLASS__ === static::class;
}
/**
* Formats datetime errors.
*
* @return string[]
*/
private function formatDateTimeErrors(array $errors): array
{
$formattedErrors = [];
foreach ($errors as $pos => $message) {
$formattedErrors[] = sprintf('at position %d: %s', $pos, $message);
}
return $formattedErrors;
}
private function getTimezone(array $context): ?\DateTimeZone
{
$dateTimeZone = $context[self::TIMEZONE_KEY] ?? $this->defaultContext[self::TIMEZONE_KEY];
if (null === $dateTimeZone) {
return null;
}
return $dateTimeZone instanceof \DateTimeZone ? $dateTimeZone : new \DateTimeZone($dateTimeZone);
}
}
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