Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\serialization\Encoder;
Chris@0: 
Chris@0: use Symfony\Component\Serializer\Encoder\DecoderInterface;
Chris@0: use Symfony\Component\Serializer\Encoder\EncoderInterface;
Chris@0: use Symfony\Component\Serializer\Encoder\JsonDecode;
Chris@0: use Symfony\Component\Serializer\Encoder\JsonEncode;
Chris@0: use Symfony\Component\Serializer\Encoder\JsonEncoder as BaseJsonEncoder;
Chris@0: 
Chris@0: /**
Chris@0:  * Adds 'ajax to the supported content types of the JSON encoder'
Chris@14:  *
Chris@14:  * @internal
Chris@14:  *   This encoder should not be used directly. Rather, use the `serializer`
Chris@14:  *   service.
Chris@0:  */
Chris@0: class JsonEncoder extends BaseJsonEncoder implements EncoderInterface, DecoderInterface {
Chris@0: 
Chris@0:   /**
Chris@0:    * The formats that this Encoder supports.
Chris@0:    *
Chris@0:    * @var array
Chris@0:    */
Chris@0:   protected static $format = ['json', 'ajax'];
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function __construct(JsonEncode $encodingImpl = NULL, JsonDecode $decodingImpl = NULL) {
Chris@18:     $this->encodingImpl = $encodingImpl ?: $this->getJsonEncode();
Chris@18:     $this->decodingImpl = $decodingImpl ?: $this->getJsonDecode();
Chris@18:   }
Chris@18: 
Chris@18:   /**
Chris@18:    * Instantiates a JsonEncode instance.
Chris@18:    *
Chris@18:    * @internal this exists to bridge Symfony 3 to Symfony 4, and can be removed
Chris@18:    *   once Drupal requires Symfony 4.2 or higher.
Chris@18:    */
Chris@18:   private function getJsonEncode() {
Chris@0:     // Encode <, >, ', &, and " for RFC4627-compliant JSON, which may also be
Chris@0:     // embedded into HTML.
Chris@0:     // @see \Symfony\Component\HttpFoundation\JsonResponse
Chris@0:     $json_encoding_options = JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_AMP | JSON_HEX_QUOT;
Chris@18:     $reflection = new \ReflectionClass(JsonEncode::class);
Chris@18:     if (array_key_exists('OPTIONS', $reflection->getConstants())) {
Chris@18:       return new JsonEncode([JsonEncode::OPTIONS => $json_encoding_options]);
Chris@18:     }
Chris@18:     return new JsonEncode($json_encoding_options);
Chris@18:   }
Chris@18: 
Chris@18:   /**
Chris@18:    * Instantiates a JsonDecode instance.
Chris@18:    *
Chris@18:    * @internal this exists to bridge Symfony 3 to Symfony 4, and can be removed
Chris@18:    *   once Drupal requires Symfony 4.2 or higher.
Chris@18:    */
Chris@18:   private function getJsonDecode() {
Chris@18:     $reflection = new \ReflectionClass(JsonDecode::class);
Chris@18:     if (array_key_exists('ASSOCIATIVE', $reflection->getConstants())) {
Chris@18:       return new JsonDecode([JsonDecode::ASSOCIATIVE => TRUE]);
Chris@18:     }
Chris@18:     return new JsonDecode(TRUE);
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function supportsEncoding($format) {
Chris@0:     return in_array($format, static::$format);
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function supportsDecoding($format) {
Chris@0:     return in_array($format, static::$format);
Chris@0:   }
Chris@0: 
Chris@0: }