105 lines
2.5 KiB
PHP
105 lines
2.5 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Serializer\Encoder;
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use Symfony\Component\Serializer\Exception\RuntimeException;
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/**
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* Encoder delegating the decoding to a chain of encoders.
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*
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* @author Jordi Boggiano <j.boggiano@seld.be>
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* @author Johannes M. Schmitt <schmittjoh@gmail.com>
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* @author Lukas Kahwe Smith <smith@pooteeweet.org>
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*/
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class ChainEncoder implements EncoderInterface
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{
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protected $encoders = array();
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protected $encoderByFormat = array();
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public function __construct(array $encoders = array())
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{
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$this->encoders = $encoders;
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}
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/**
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* {@inheritdoc}
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*/
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final public function encode($data, $format, array $context = array())
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{
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return $this->getEncoder($format)->encode($data, $format, $context);
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}
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/**
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* {@inheritdoc}
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*/
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public function supportsEncoding($format)
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{
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try {
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$this->getEncoder($format);
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} catch (RuntimeException $e) {
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return false;
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}
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return true;
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}
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/**
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* Checks whether the normalization is needed for the given format.
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*
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* @param string $format
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*
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* @return bool
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*/
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public function needsNormalization($format)
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{
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$encoder = $this->getEncoder($format);
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if (!$encoder instanceof NormalizationAwareInterface) {
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return true;
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}
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if ($encoder instanceof self) {
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return $encoder->needsNormalization($format);
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}
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return false;
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}
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/**
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* Gets the encoder supporting the format.
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*
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* @param string $format
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*
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* @return EncoderInterface
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*
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* @throws RuntimeException if no encoder is found
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*/
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private function getEncoder($format)
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{
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if (isset($this->encoderByFormat[$format])
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&& isset($this->encoders[$this->encoderByFormat[$format]])
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) {
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return $this->encoders[$this->encoderByFormat[$format]];
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}
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foreach ($this->encoders as $i => $encoder) {
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if ($encoder->supportsEncoding($format)) {
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$this->encoderByFormat[$format] = $i;
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return $encoder;
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}
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}
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throw new RuntimeException(sprintf('No encoder found for format "%s".', $format));
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}
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}
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