enqueue-dev/pkg/stomp/StompHeadersEncoder.php at master · ArnaudTarroux/enqueue-dev · GitHub

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<?php

namespace Enqueue\Stomp;

class StompHeadersEncoder
{
 const PROPERTY_PREFIX = '_property_';
 const TYPE_PREFIX = '_type_';
 const TYPE_STRING = 's';
 const TYPE_INT = 'i';
 const TYPE_FLOAT = 'f';
 const TYPE_BOOL = 'b';
 const TYPE_NULL = 'n';

 /**
 * @param array $headers
 * @param array $properties
 *
 * @return array
 */
 public static function encode(array $headers = [], array $properties = [])
 {
 $encodedHeaders = self::doEncode($headers);

 foreach (self::doEncode($properties) as $key => $value) {
 $encodedHeaders[self::PROPERTY_PREFIX.$key] = $value;
 }

 return $encodedHeaders;
 }

 /**
 * @param array $headers
 *
 * @return array [[headers], [properties]]
 */
 public static function decode(array $headers = [])
 {
 $encodedHeaders = [];
 $encodedProperties = [];
 $prefixLength = strlen(self::PROPERTY_PREFIX);

 // separate headers/properties
 foreach ($headers as $key => $value) {
 if (0 === strpos($key, self::PROPERTY_PREFIX)) {
 $encodedProperties[substr($key, $prefixLength)] = $value;
 } else {
 $encodedHeaders[$key] = $value;
 }
 }

 $decodedHeaders = self::doDecode($encodedHeaders);
 $decodedProperties = self::doDecode($encodedProperties);

 return [$decodedHeaders, $decodedProperties];
 }

 /**
 * @param array $headers
 *
 * @return array
 */
 private static function doEncode($headers = [])
 {
 $encoded = [];

 foreach ($headers as $key => $value) {
 switch ($type = gettype($value)) {
 case 'string':
 $encoded[$key] = (string) $value;
 $encoded[self::TYPE_PREFIX.$key] = self::TYPE_STRING;

 break;
 case 'integer':
 $encoded[$key] = (string) $value;
 $encoded[self::TYPE_PREFIX.$key] = self::TYPE_INT;

 break;
 case 'double':
 $encoded[$key] = (string) $value;
 $encoded[self::TYPE_PREFIX.$key] = self::TYPE_FLOAT;

 break;
 case 'NULL':
 $encoded[$key] = '';
 $encoded[self::TYPE_PREFIX.$key] = self::TYPE_NULL;

 break;
 case 'boolean':
 $encoded[$key] = $value ? 'true' : 'false';
 $encoded[self::TYPE_PREFIX.$key] = self::TYPE_BOOL;

 break;
 default:
 throw new \LogicException(sprintf('Value type is not valid: "%s"', $type));
 }
 }

 return $encoded;
 }

 /**
 * @param array $headers
 *
 * @return array
 */
 private static function doDecode(array $headers = [])
 {
 $decoded = [];

 foreach ($headers as $key => $value) {
 // skip type header
 if (0 === strpos($key, self::TYPE_PREFIX)) {
 continue;
 }

 // copy value as is if here is no type header
 if (false == array_key_exists(self::TYPE_PREFIX.$key, $headers)) {
 $decoded[$key] = $value;

 continue;
 }

 switch ($headers[self::TYPE_PREFIX.$key]) {
 case self::TYPE_STRING:
 $decoded[$key] = (string) $value;

 break;
 case self::TYPE_INT:
 $decoded[$key] = (int) $value;

 break;
 case self::TYPE_FLOAT:
 $decoded[$key] = (float) $value;

 break;
 case self::TYPE_NULL:
 $decoded[$key] = null;

 break;
 case self::TYPE_BOOL:
 $decoded[$key] = 'true' === $value;

 break;
 default:
 throw new \LogicException(sprintf('Type is invalid: "%s"', $value));
 }
 }

 return $decoded;
 }
}