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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\Encoder;
- use Symfony\Component\Serializer\Exception\RuntimeException;
- /**
- * Encoder delegating the decoding to a chain of encoders.
- *
- * @author Jordi Boggiano <j.boggiano@seld.be>
- * @author Johannes M. Schmitt <schmittjoh@gmail.com>
- * @author Lukas Kahwe Smith <smith@pooteeweet.org>
- *
- * @final
- */
- class ChainEncoder implements ContextAwareEncoderInterface
- {
- protected $encoders = [];
- protected $encoderByFormat = [];
- public function __construct(array $encoders = [])
- {
- $this->encoders = $encoders;
- }
- /**
- * {@inheritdoc}
- */
- final public function encode($data, string $format, array $context = [])
- {
- return $this->getEncoder($format, $context)->encode($data, $format, $context);
- }
- /**
- * {@inheritdoc}
- */
- public function supportsEncoding(string $format, array $context = []): bool
- {
- try {
- $this->getEncoder($format, $context);
- } catch (RuntimeException $e) {
- return false;
- }
- return true;
- }
- /**
- * Checks whether the normalization is needed for the given format.
- */
- public function needsNormalization(string $format, array $context = []): bool
- {
- $encoder = $this->getEncoder($format, $context);
- if (!$encoder instanceof NormalizationAwareInterface) {
- return true;
- }
- if ($encoder instanceof self) {
- return $encoder->needsNormalization($format, $context);
- }
- return false;
- }
- /**
- * Gets the encoder supporting the format.
- *
- * @throws RuntimeException if no encoder is found
- */
- private function getEncoder(string $format, array $context): EncoderInterface
- {
- if (isset($this->encoderByFormat[$format])
- && isset($this->encoders[$this->encoderByFormat[$format]])
- ) {
- return $this->encoders[$this->encoderByFormat[$format]];
- }
- foreach ($this->encoders as $i => $encoder) {
- if ($encoder->supportsEncoding($format, $context)) {
- $this->encoderByFormat[$format] = $i;
- return $encoder;
- }
- }
- throw new RuntimeException(sprintf('No encoder found for format "%s".', $format));
- }
- }
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