<?php
/**
* @see http://github.com/zendframework/zend-diactoros for the canonical source repository
* @copyright Copyright (c) 2017 Zend Technologies USA Inc. (http://www.zend.com)
* @license https://github.com/zendframework/zend-diactoros/blob/master/LICENSE.md New BSD License
*/
namespace Zend\Diactoros\Request;
use Psr\Http\Message\RequestInterface;
use UnexpectedValueException;
use Zend\Diactoros\Request;
use Zend\Diactoros\Stream;
use function sprintf;
/**
* Serialize or deserialize request messages to/from arrays.
*
* This class provides functionality for serializing a RequestInterface instance
* to an array, as well as the reverse operation of creating a Request instance
* from an array representing a message.
*/
final class ArraySerializer
{
/**
* Serialize a request message to an array.
*
* @param RequestInterface $request
* @return array
*/
public static function toArray(RequestInterface $request)
{
return [
'method' => $request->getMethod(),
'request_target' => $request->getRequestTarget(),
'uri' => (string) $request->getUri(),
'protocol_version' => $request->getProtocolVersion(),
'headers' => $request->getHeaders(),
'body' => (string) $request->getBody(),
];
}
/**
* Deserialize a request array to a request instance.
*
* @param array $serializedRequest
* @return Request
* @throws UnexpectedValueException when cannot deserialize response
*/
public static function fromArray(array $serializedRequest)
{
try {
$uri = self::getValueFromKey($serializedRequest, 'uri');
$method = self::getValueFromKey($serializedRequest, 'method');
$body = new Stream('php://memory', 'wb+');
$body->write(self::getValueFromKey($serializedRequest, 'body'));
$headers = self::getValueFromKey($serializedRequest, 'headers');
$requestTarget = self::getValueFromKey($serializedRequest, 'request_target');
$protocolVersion = self::getValueFromKey($serializedRequest, 'protocol_version');
return (new Request($uri, $method, $body, $headers))
->withRequestTarget($requestTarget)
->withProtocolVersion($protocolVersion);
} catch (\Exception $exception) {
throw new UnexpectedValueException('Cannot deserialize request', null, $exception);
}
}
/**
* @param array $data
* @param string $key
* @param string $message
* @return mixed
* @throws UnexpectedValueException
*/
private static function getValueFromKey(array $data, $key, $message = null)
{
if (isset($data[$key])) {
return $data[$key];
}
if ($message === null) {
$message = sprintf('Missing "%s" key in serialized request', $key);
}
throw new UnexpectedValueException($message);
}
}