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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
{
/**
* {@inheritDoc}
*/
public function transform($dateTime)
{
if (null === $dateTime) {
return '';
}
if (!$dateTime instanceof \DateTime) {
throw new TransformationFailedException('Expected a \DateTime.');
}
if ($this->inputTimezone !== $this->outputTimezone) {
$dateTime = clone $dateTime;
$dateTime->setTimezone(new \DateTimeZone($this->outputTimezone));
}
return preg_replace('/\+00:00$/', 'Z', $dateTime->format('c'));
}
/**
* {@inheritDoc}
*/
public function reverseTransform($rfc3339)
{
if (!is_string($rfc3339)) {
throw new TransformationFailedException('Expected a string.');
}
if ('' === $rfc3339) {
return null;
}
try {
$dateTime = new \DateTime($rfc3339);
} catch (\Exception $e) {
throw new TransformationFailedException($e->getMessage(), $e->getCode(), $e);
}
if ($this->outputTimezone !== $this->inputTimezone) {
try {
$dateTime->setTimezone(new \DateTimeZone($this->inputTimezone));
} catch (\Exception $e) {
throw new TransformationFailedException($e->getMessage(), $e->getCode(), $e);
}
}
if (preg_match('/(\d{4})-(\d{2})-(\d{2})/', $rfc3339, $matches)) {
if (!checkdate($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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