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<?php |
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namespace BoneMvc\Module\I18n; |
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use Locale; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Psr\Http\Server\MiddlewareInterface; |
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use Psr\Http\Server\RequestHandlerInterface; |
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use Zend\Expressive\Helper\UrlHelper; |
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class InternationalisationMiddleware implements MiddlewareInterface |
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{ |
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/** @var UrlHelper */ |
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private $helper; |
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/** @var string|null */ |
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private $defaultLocale; |
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/** @var string $fallbackLocale */ |
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private $fallbackLocale = 'en_US'; |
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const REGEX_LOCALE = '#^/(?P<locale>[a-z]{2,3}|[a-z]{2}[-_][a-zA-Z]{2})(?:/|$)#'; |
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/** |
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* InternationalisationMiddleware constructor. |
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* @param $helper |
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* @param string|null $defaultLocale |
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*/ |
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public function __construct( $helper, string $defaultLocale = null) |
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{ |
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$this->helper = $helper; |
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if ($defaultLocale) { |
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$this->defaultLocale = $defaultLocale; |
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} |
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} |
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/** |
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* @param ServerRequestInterface $request |
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* @param RequestHandlerInterface $handler |
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* @return ResponseInterface |
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*/ |
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public function process(ServerRequestInterface $request, RequestHandlerInterface $handler) : ResponseInterface |
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{ |
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$uri = $request->getUri(); |
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die('aye ' . $uri); |
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$path = $uri->getPath(); |
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if (! preg_match(self::REGEX_LOCALE, $path, $matches)) { |
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Locale::setDefault($this->defaultLocale ?: $this->fallbackLocale); |
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return $handler->handle($request); |
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} |
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$locale = $matches['locale']; |
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Locale::setDefault(Locale::canonicalize($locale)); |
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$this->helper->setBasePath($locale); |
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$path = substr($path, strlen($locale) + 1); |
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return $handler->handle($request->withUri( |
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$uri->withPath($path ?: '/') |
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)); |
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} |
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} |
In PHP, under loose comparison (like
==
, or!=
, orswitch
conditions), values of different types might be equal.For
string
values, the empty string''
is a special case, in particular the following results might be unexpected: