Version 1

[yaffs-website] / vendor / symfony / serializer / Encoder / ChainEncoder.php

diff --git a/vendor/symfony/serializer/Encoder/ChainEncoder.php b/vendor/symfony/serializer/Encoder/ChainEncoder.php
new file mode 100644 (file)
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+++ b/vendor/symfony/serializer/Encoder/ChainEncoder.php
@@ -0,0 +1,104 @@
+<?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>
+ */
+class ChainEncoder implements EncoderInterface
+{
+    protected $encoders = array();
+    protected $encoderByFormat = array();
+
+    public function __construct(array $encoders = array())
+    {
+        $this->encoders = $encoders;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    final public function encode($data, $format, array $context = array())
+    {
+        return $this->getEncoder($format)->encode($data, $format, $context);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function supportsEncoding($format)
+    {
+        try {
+            $this->getEncoder($format);
+        } catch (RuntimeException $e) {
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Checks whether the normalization is needed for the given format.
+     *
+     * @param string $format
+     *
+     * @return bool
+     */
+    public function needsNormalization($format)
+    {
+        $encoder = $this->getEncoder($format);
+
+        if (!$encoder instanceof NormalizationAwareInterface) {
+            return true;
+        }
+
+        if ($encoder instanceof self) {
+            return $encoder->needsNormalization($format);
+        }
+
+        return false;
+    }
+
+    /**
+     * Gets the encoder supporting the format.
+     *
+     * @param string $format
+     *
+     * @return EncoderInterface
+     *
+     * @throws RuntimeException if no encoder is found
+     */
+    private function getEncoder($format)
+    {
+        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)) {
+                $this->encoderByFormat[$format] = $i;
+
+                return $encoder;
+            }
+        }
+
+        throw new RuntimeException(sprintf('No encoder found for format "%s".', $format));
+    }
+}