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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\Form\Extension\Core\DataTransformer;
use Symfony\Component\Form\Exception\TransformationFailedException;
/**
* @author Bernhard Schussek <bschussek@gmail.com>
*/
class DateTimeToRfc3339Transformer extends BaseDateTimeTransformer
{
/**
* Transforms a normalized date into a localized date.
*
* @param \DateTimeInterface $dateTime A DateTimeInterface object
*
* @return string The formatted date
*
* @throws TransformationFailedException If the given value is not a \DateTimeInterface
*/
public function transform($dateTime)
{
if (null === $dateTime) {
return '';
}
if (!$dateTime instanceof \DateTimeInterface) {
throw new TransformationFailedException('Expected a \DateTimeInterface.');
}
if ($this->inputTimezone !== $this->outputTimezone) {
if (!$dateTime instanceof \DateTimeImmutable) {
$dateTime = clone $dateTime;
}
$dateTime = $dateTime->setTimezone(new \DateTimeZone($this->outputTimezone));
}
return preg_replace('/\+00:00$/', 'Z', $dateTime->format('c'));
}
/**
* Transforms a formatted string following RFC 3339 into a normalized date.
*
* @param string $rfc3339 Formatted string
*
* @return \DateTime Normalized date
*
* @throws TransformationFailedException If the given value is not a string,
* if the value could not be transformed
*/
public function reverseTransform($rfc3339)
{
if (!\is_string($rfc3339)) {
throw new TransformationFailedException('Expected a string.');
}
if ('' === $rfc3339) {
return;
}
if (!preg_match('/^(\d{4})-(\d{2})-(\d{2})T\d{2}:\d{2}(?::\d{2})?(?:\.\d+)?(?:Z|(?:(?:\+|-)\d{2}:\d{2}))$/', $rfc3339, $matches)) {
throw new TransformationFailedException(sprintf('The date "%s" is not a valid date.', $rfc3339));
}
try {
$dateTime = new \DateTime($rfc3339);
} catch (\Exception $e) {
throw new TransformationFailedException($e->getMessage(), $e->getCode(), $e);
}
if ($this->inputTimezone !== $dateTime->getTimezone()->getName()) {
$dateTime->setTimezone(new \DateTimeZone($this->inputTimezone));
}
if (!checkdate($matches[2], $matches[3], $matches[1])) {
throw new TransformationFailedException(sprintf('The date "%s-%s-%s" is not a valid date.', $matches[1], $matches[2], $matches[3]));
}
return $dateTime;
}
}
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