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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 Franz Wilding <franz.wilding@me.com>
* @author Bernhard Schussek <bschussek@gmail.com>
* @author Fred Cox <mcfedr@gmail.com>
*/
class DateTimeToHtml5LocalDateTimeTransformer extends BaseDateTimeTransformer
{
const HTML5_FORMAT = 'Y-m-d\\TH:i:s';
/**
* Transforms a \DateTime into a local date and time string.
*
* According to the HTML standard, the input string of a datetime-local
* input is a RFC3339 date followed by 'T', followed by a RFC3339 time.
* https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#valid-local-date-and-time-string
*
* @param \DateTime|\DateTimeInterface $dateTime A DateTime object
*
* @return string The formatted date
*
* @throws TransformationFailedException If the given value is not an
* instance of \DateTime or \DateTimeInterface
*/
public function transform($dateTime)
{
if (null === $dateTime) {
return '';
}
if (!$dateTime instanceof \DateTime && !$dateTime instanceof \DateTimeInterface) {
throw new TransformationFailedException('Expected a \DateTime or \DateTimeInterface.');
}
if ($this->inputTimezone !== $this->outputTimezone) {
if (!$dateTime instanceof \DateTimeImmutable) {
$dateTime = clone $dateTime;
}
$dateTime = $dateTime->setTimezone(new \DateTimeZone($this->outputTimezone));
}
return $dateTime->format(self::HTML5_FORMAT);
}
/**
* Transforms a local date and time string into a \DateTime.
*
* When transforming back to DateTime the regex is slightly laxer, taking into
* account rules for parsing a local date and time string
* https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#parse-a-local-date-and-time-string
*
* @param string $dateTimeLocal Formatted string
*
* @return \DateTime Normalized date
*
* @throws TransformationFailedException If the given value is not a string,
* if the value could not be transformed
*/
public function reverseTransform($dateTimeLocal)
{
if (!\is_string($dateTimeLocal)) {
throw new TransformationFailedException('Expected a string.');
}
if ('' === $dateTimeLocal) {
return;
}
// to maintain backwards compatibility we do not strictly validate the submitted date
// see https://github.com/symfony/symfony/issues/28699
if (!preg_match('/^(\d{4})-(\d{2})-(\d{2})[T ]\d{2}:\d{2}(?::\d{2})?/', $dateTimeLocal, $matches)) {
throw new TransformationFailedException(sprintf('The date "%s" is not a valid date.', $dateTimeLocal));
}
try {
$dateTime = new \DateTime($dateTimeLocal, new \DateTimeZone($this->outputTimezone));
} 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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