--- /dev/null
+<?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 $data instanceof \SplFileInfo;
+ }
+
+ /**
+ * {@inheritdoc}
+ *
+ * Regex adapted from Brian Grinstead code.
+ *
+ * @see https://gist.github.com/bgrins/6194623
+ */
+ public function denormalize($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();
+ }
+}