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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\HttpFoundation\File\File;
- use Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesser;
- use Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesserInterface;
- use Symfony\Component\Serializer\Exception\InvalidArgumentException;
- use Symfony\Component\Serializer\Exception\UnexpectedValueException;
- /**
- * Normalizes an {@see \SplFileInfo} object to a data URI.
- * Denormalizes a data URI to a {@see \SplFileObject} object.
- *
- * @author Kévin Dunglas <dunglas@gmail.com>
- */
- class DataUriNormalizer implements NormalizerInterface, DenormalizerInterface
- {
- /**
- * @var MimeTypeGuesserInterface
- */
- private $mimeTypeGuesser;
- public function __construct(MimeTypeGuesserInterface $mimeTypeGuesser = null)
- {
- if (null === $mimeTypeGuesser && class_exists('Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesser')) {
- $mimeTypeGuesser = MimeTypeGuesser::getInstance();
- }
- $this->mimeTypeGuesser = $mimeTypeGuesser;
- }
- /**
- * {@inheritdoc}
- */
- public function normalize($object, $format = null, array $context = array())
- {
- if (!$object instanceof \SplFileInfo) {
- throw new InvalidArgumentException('The object must be an instance of "\SplFileInfo".');
- }
- $mimeType = $this->getMimeType($object);
- $splFileObject = $this->extractSplFileObject($object);
- $data = '';
- $splFileObject->rewind();
- while (!$splFileObject->eof()) {
- $data .= $splFileObject->fgets();
- }
- if ('text' === explode('/', $mimeType, 2)[0]) {
- return sprintf('data:%s,%s', $mimeType, rawurlencode($data));
- }
- return sprintf('data:%s;base64,%s', $mimeType, base64_encode($data));
- }
- /**
- * {@inheritdoc}
- */
- public function supportsNormalization($data, $format = null)
- {
- return $data instanceof \SplFileInfo;
- }
- /**
- * {@inheritdoc}
- *
- * Regex adapted from Brian Grinstead code.
- *
- * @see https://gist.github.com/bgrins/6194623
- *
- * @throws InvalidArgumentException
- * @throws UnexpectedValueException
- */
- public function denormalize($data, $class, $format = null, array $context = array())
- {
- if (!preg_match('/^data:([a-z0-9][a-z0-9\!\#\$\&\-\^\_\+\.]{0,126}\/[a-z0-9][a-z0-9\!\#\$\&\-\^\_\+\.]{0,126}(;[a-z0-9\-]+\=[a-z0-9\-]+)?)?(;base64)?,[a-z0-9\!\$\&\\\'\,\(\)\*\+\,\;\=\-\.\_\~\:\@\/\?\%\s]*\s*$/i', $data)) {
- throw new UnexpectedValueException('The provided "data:" URI is not valid.');
- }
- try {
- switch ($class) {
- case 'Symfony\Component\HttpFoundation\File\File':
- return new File($data, false);
- case 'SplFileObject':
- case 'SplFileInfo':
- return new \SplFileObject($data);
- }
- } catch (\RuntimeException $exception) {
- throw new UnexpectedValueException($exception->getMessage(), $exception->getCode(), $exception);
- }
- throw new InvalidArgumentException(sprintf('The class parameter "%s" is not supported. It must be one of "SplFileInfo", "SplFileObject" or "Symfony\Component\HttpFoundation\File\File".', $class));
- }
- /**
- * {@inheritdoc}
- */
- public function supportsDenormalization($data, $type, $format = null)
- {
- $supportedTypes = array(
- \SplFileInfo::class => true,
- \SplFileObject::class => true,
- 'Symfony\Component\HttpFoundation\File\File' => true,
- );
- return isset($supportedTypes[$type]);
- }
- /**
- * Gets the mime type of the object. Defaults to application/octet-stream.
- *
- * @param \SplFileInfo $object
- *
- * @return string
- */
- private function getMimeType(\SplFileInfo $object)
- {
- if ($object instanceof File) {
- return $object->getMimeType();
- }
- if ($this->mimeTypeGuesser && $mimeType = $this->mimeTypeGuesser->guess($object->getPathname())) {
- return $mimeType;
- }
- return 'application/octet-stream';
- }
- /**
- * Returns the \SplFileObject instance associated with the given \SplFileInfo instance.
- *
- * @param \SplFileInfo $object
- *
- * @return \SplFileObject
- */
- private function extractSplFileObject(\SplFileInfo $object)
- {
- if ($object instanceof \SplFileObject) {
- return $object;
- }
- return $object->openFile();
- }
- }
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