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TwigExtractor.php
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<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Bridge\Twig\Translation; use Symfony\Component\Finder\Finder; use Symfony\Component\Translation\Extractor\ExtractorInterface; use Symfony\Component\Translation\MessageCatalogue; /** * TwigExtractor extracts translation messages from a twig template. * * @author Michel Salib <michelsalib@hotmail.com> * @author Fabien Potencier <fabien@symfony.com> */ class TwigExtractor implements ExtractorInterface { /** * Default domain for found messages. * * @var string */ private $defaultDomain = 'messages'; /** * Prefix for found message. * * @var string */ private $prefix = ''; /** * The twig environment. * * @var \Twig_Environment */ private $twig; public function __construct(\Twig_Environment $twig) { $this->twig = $twig; } /** * {@inheritDoc} */ public function extract($directory, MessageCatalogue $catalogue) { // load any existing translation files $finder = new Finder(); $files = $finder->files()->name('*.twig')->sortByName()->in($directory); foreach ($files as $file) { $this->extractTemplate(file_get_contents($file->getPathname()), $catalogue); } } /** * {@inheritDoc} */ public function setPrefix($prefix) { $this->prefix = $prefix; } protected function extractTemplate($template, MessageCatalogue $catalogue) { $visitor = $this->twig->getExtension('translator')->getTranslationNodeVisitor(); $visitor->enable(); $this->twig->parse($this->twig->tokenize($template)); foreach ($visitor->getMessages() as $message) { $catalogue->set(trim($message[0]), $this->prefix.trim($message[0]), $message[1] ? $message[1] : $this->defaultDomain); } $visitor->disable(); } }