gnu-social/vendor/enqueue/stomp/StompHeadersEncoder.php
2019-08-14 15:32:34 +01:00

137 lines
3.9 KiB
PHP

<?php
declare(strict_types=1);
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';
public static function encode(array $headers = [], array $properties = []): array
{
$encodedHeaders = self::doEncode($headers);
foreach (self::doEncode($properties) as $key => $value) {
$encodedHeaders[self::PROPERTY_PREFIX.$key] = $value;
}
return $encodedHeaders;
}
/**
* Returns array [[headers], [properties]].
*/
public static function decode(array $headers = []): array
{
$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];
}
private static function doEncode(array $headers = []): array
{
$encoded = [];
foreach ($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;
}
private static function doDecode(array $headers = []): array
{
$decoded = [];
foreach ($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;
}
}