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<?php |
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/** |
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* This file contains only the Extension class. |
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*/ |
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namespace AppBundle\Twig; |
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use Symfony\Component\Config\Definition\Exception\Exception; |
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use Symfony\Component\DependencyInjection\ContainerInterface; |
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use Symfony\Component\HttpFoundation\Request; |
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use Symfony\Component\HttpFoundation\RequestStack; |
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use Intuition; |
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use Symfony\Component\HttpFoundation\Session\Session; |
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use Twig_Extension; |
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/** |
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* The parent class for all of XTools' Twig extensions, in order to centralize the i18n set-up. |
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*/ |
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abstract class Extension extends Twig_Extension |
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{ |
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/** @var ContainerInterface The DI container. */ |
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protected $container; |
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/** @var RequestStack The request stack. */ |
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protected $requestStack; |
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/** @var Session User's current session. */ |
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protected $session; |
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/** @var Intuition The i18n object. */ |
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private $intuition; |
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/** |
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* Extension constructor. |
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* @param ContainerInterface $container The DI container. |
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* @param RequestStack $requestStack The request stack. |
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* @param Session $session |
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*/ |
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public function __construct(ContainerInterface $container, RequestStack $requestStack, Session $session) |
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{ |
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$this->container = $container; |
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$this->requestStack = $requestStack; |
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$this->session = $session; |
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} |
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/** |
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* Get an Intuition object, set to the current language based on the query string or session |
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* of the current request. |
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* @return Intuition |
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* @throws \Exception If the 'i18n/en.json' file doesn't exist (as it's the default). |
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*/ |
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protected function getIntuition() |
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{ |
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// Don't recreate the object. |
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if ($this->intuition instanceof Intuition) { |
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return $this->intuition; |
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} |
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// Find the path, and complain if English doesn't exist. |
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$path = $this->container->getParameter('kernel.root_dir') . '/../i18n'; |
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if (!file_exists("$path/en.json")) { |
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throw new Exception("Language directory doesn't exist: $path"); |
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} |
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$useLang = 'en'; |
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// Current request doesn't exist in unit tests, in which case we'll fall back to English. |
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if ($this->requestStack->getCurrentRequest() !== null) { |
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$useLang = $this->getIntuitionLang(); |
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// Save the language to the session. |
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if ($this->session->get('lang') !== $useLang) { |
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$this->session->set('lang', $useLang); |
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} |
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} |
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// Set up Intuition, using the selected language. |
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$intuition = new Intuition('xtools'); |
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$intuition->registerDomain('xtools', $path); |
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$intuition->setLang(strtolower($useLang)); |
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$this->intuition = $intuition; |
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return $intuition; |
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} |
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/** |
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* Shorthand to get the current request from the request stack. |
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* @return Request |
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* There is no request stack in the tests. |
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* @codeCoverageIgnore |
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*/ |
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protected function getCurrentRequest() |
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{ |
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return $this->container->get('request_stack')->getCurrentRequest(); |
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} |
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/** |
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* Determine the interface language, either from the current request or session. |
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* @return string |
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*/ |
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private function getIntuitionLang() |
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{ |
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$queryLang = $this->requestStack->getCurrentRequest()->query->get('uselang'); |
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$sessionLang = $this->session->get('lang'); |
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if ($queryLang !== '' && $queryLang !== null) { |
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return $queryLang; |
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} elseif ($sessionLang !== '' && $sessionLang !== null) { |
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return $sessionLang; |
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} |
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// English as default. |
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return 'en'; |
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} |
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} |
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x-tools /
xtools
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