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<?php
/**
* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
* @link https://cakephp.org CakePHP(tm) Project
* @since 3.3.0
* @license https://opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\I18n\Middleware;
use Cake\I18n\I18n;
use Locale;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
/**
* Sets the runtime default locale for the request based on the
* Accept-Language header. The default will only be set if it
* matches the list of passed valid locales.
*/
class LocaleSelectorMiddleware
{
/**
* List of valid locales for the request
*
* @var array
*/
protected $locales = [];
/**
* Constructor.
*
* @param array $locales A list of accepted locales, or ['*'] to accept any
* locale header value.
*/
public function __construct(array $locales = [])
{
$this->locales = $locales;
}
/**
* @param ServerRequestInterface $request The request.
* @param ResponseInterface $response The response.
* @param callable $next The next middleware to call.
* @return \Psr\Http\Message\ResponseInterface A response.
*/
public function __invoke(ServerRequestInterface $request, ResponseInterface $response, $next)
{
$locale = Locale::acceptFromHttp($request->getHeaderLine('Accept-Language'));
if (!$locale) {
return $next($request, $response);
}
if (in_array($locale, $this->locales) || $this->locales === ['*']) {
I18n::setLocale($locale);
}
return $next($request, $response);
}
}