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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\UnexpectedValueException;
/**
* Normalizes an instance of {@see \DateInterval} to an interval string.
* Denormalizes an interval string to an instance of {@see \DateInterval}.
*
* @author Jérôme Parmentier <jerome@prmntr.me>
*/
class DateIntervalNormalizer implements NormalizerInterface, DenormalizerInterface, CacheableSupportsMethodInterface
{
const FORMAT_KEY = 'dateinterval_format';
private $defaultContext = [
self::FORMAT_KEY => 'P%yY%mM%dDT%hH%iM%sS',
];
/**
* @param array $defaultContext
*/
public function __construct($defaultContext = [])
{
if (!\is_array($defaultContext)) {
@trigger_error(sprintf('The "format" parameter is deprecated since Symfony 4.2, use the "%s" key of the context instead.', self::FORMAT_KEY), E_USER_DEPRECATED);
$defaultContext = [self::FORMAT_KEY => (string) $defaultContext];
}
$this->defaultContext = array_merge($this->defaultContext, $defaultContext);
}
/**
* {@inheritdoc}
*
* @throws InvalidArgumentException
*/
public function normalize($object, $format = null, array $context = [])
{
if (!$object instanceof \DateInterval) {
throw new InvalidArgumentException('The object must be an instance of "\DateInterval".');
}
return $object->format($context[self::FORMAT_KEY] ?? $this->defaultContext[self::FORMAT_KEY]);
}
/**
* {@inheritdoc}
*/
public function supportsNormalization($data, $format = null)
{
return $data instanceof \DateInterval;
}
/**
* {@inheritdoc}
*/
public function hasCacheableSupportsMethod(): bool
{
return __CLASS__ === \get_class($this);
}
/**
* {@inheritdoc}
*
* @throws InvalidArgumentException
* @throws UnexpectedValueException
*/
public function denormalize($data, $class, $format = null, array $context = [])
{
if (!\is_string($data)) {
throw new InvalidArgumentException(sprintf('Data expected to be a string, %s given.', \gettype($data)));
}
if (!$this->isISO8601($data)) {
throw new UnexpectedValueException('Expected a valid ISO 8601 interval string.');
}
$dateIntervalFormat = $context[self::FORMAT_KEY] ?? $this->defaultContext[self::FORMAT_KEY];
$valuePattern = '/^'.preg_replace('/%([yYmMdDhHiIsSwW])(\w)/', '(?P<$1>\d+)$2', $dateIntervalFormat).'$/';
if (!preg_match($valuePattern, $data)) {
throw new UnexpectedValueException(sprintf('Value "%s" contains intervals not accepted by format "%s".', $data, $dateIntervalFormat));
}
try {
return new \DateInterval($data);
} catch (\Exception $e) {
throw new UnexpectedValueException($e->getMessage(), $e->getCode(), $e);
}
}
/**
* {@inheritdoc}
*/
public function supportsDenormalization($data, $type, $format = null)
{
return \DateInterval::class === $type;
}
private function isISO8601($string)
{
return preg_match('/^P(?=\w*(?:\d|%\w))(?:\d+Y|%[yY]Y)?(?:\d+M|%[mM]M)?(?:(?:\d+D|%[dD]D)|(?:\d+W|%[wW]W))?(?:T(?:\d+H|[hH]H)?(?:\d+M|[iI]M)?(?:\d+S|[sS]S)?)?$/', $string);
}
}
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