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@@ -0,0 +1,164 @@
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+<?php
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+
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+namespace Symfony\Bundle\FrameworkBundle\Translation;
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+
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+use Symfony\Component\Translation\Translator as BaseTranslator;
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+use Symfony\Component\Translation\Loader\LoaderInterface;
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+use Symfony\Component\DependencyInjection\ContainerInterface;
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+use Symfony\Component\HttpFoundation\Session;
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+
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+/*
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+ * This file is part of the Symfony framework.
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+ *
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+ * (c) Fabien Potencier <fabien.potencier@symfony-project.com>
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+ *
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+ * This source file is subject to the MIT license that is bundled
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+ * with this source code in the file LICENSE.
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+ */
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+
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+/**
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+ * Translator.
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+ *
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+ * @author Fabien Potencier <fabien.potencier@symfony-project.com>
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+ */
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+class Translator extends BaseTranslator
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+{
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+ protected $container;
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+ protected $options;
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+
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+ /**
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+ * Constructor.
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+ *
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+ * Available options:
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+ *
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+ * * cache_dir: The cache directory (or null to disable caching)
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+ * * debug: Whether to enable debugging or not (false by default)
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+ *
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+ * @param ContainerInterface $container A ContainerInterface instance
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+ * @param array $options An array of options
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+ * @param Session $session A Session instance
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+ */
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+ public function __construct(ContainerInterface $container, array $options = array(), Session $session = null)
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+ {
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+ if (null !== $session) {
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+ parent::__construct($session->getLocale());
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+ }
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+
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+ $this->container = $container;
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+
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+ $this->options = array(
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+ 'cache_dir' => null,
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+ 'debug' => false,
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+ );
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+
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+ // check option names
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+ if ($diff = array_diff(array_keys($options), array_keys($this->options))) {
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+ throw new \InvalidArgumentException(sprintf('The Router does not support the following options: \'%s\'.', implode('\', \'', $diff)));
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+ }
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+
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+ $this->options = array_merge($this->options, $options);
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+ }
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+
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+ /**
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+ * {@inheritdoc}
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+ */
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+ protected function loadCatalogue($locale)
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+ {
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+ if (isset($this->catalogues[$locale])) {
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+ return;
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+ }
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+
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+ if (null === $this->options['cache_dir']) {
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+ $this->initialize();
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+
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+ return parent::loadCatalogue($locale);
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+ }
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+
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+ if ($this->needsReload($locale)) {
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+ $this->initialize();
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+
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+ parent::loadCatalogue($locale);
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+
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+ $this->updateCache($locale);
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+
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+ return;
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+ }
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+
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+ $this->catalogues[$locale] = include $this->getCacheFile($locale);
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+ }
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+
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+ protected function initialize()
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+ {
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+ foreach ($this->container->findTaggedServiceIds('translation.loader') as $id => $attributes) {
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+ $this->addLoader($attributes[0]['alias'], $this->container->get($id));
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+ }
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+
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+ foreach ($this->container->getParameter('translation.resources') as $resource) {
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+ $this->addResource($resource[0], $resource[1], $resource[2], $resource[3]);
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+ }
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+ }
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+
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+ protected function updateCache($locale)
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+ {
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+ $this->writeCacheFile($this->getCacheFile($locale), sprintf(
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+ "<?php use Symfony\Component\Translation\MessageCatalogue; return new MessageCatalogue('%s', %s);",
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+ $locale,
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+ var_export($this->catalogues[$locale]->getMessages(), true)
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+ ));
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+
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+ if ($this->options['debug']) {
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+ $this->writeCacheFile($this->getCacheFile($locale, 'meta'), serialize($this->catalogues[$locale]->getResources()));
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+ }
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+ }
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+
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+ protected function needsReload($locale)
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+ {
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+ $file = $this->getCacheFile($locale);
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+ if (!file_exists($file)) {
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+ return true;
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+ }
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+
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+ if (!$this->options['debug']) {
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+ return false;
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+ }
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+
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+ $metadata = $this->getCacheFile($locale, 'meta');
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+ if (!file_exists($metadata)) {
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+ return true;
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+ }
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+
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+ $time = filemtime($file);
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+ $meta = unserialize(file_get_contents($metadata));
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+ foreach ($meta as $resource) {
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+ if (!$resource->isUptodate($time)) {
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+ return true;
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+ }
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+ }
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+
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+ return false;
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+ }
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+
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+ protected function getCacheFile($locale, $extension = 'php')
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+ {
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+ return $this->options['cache_dir'].'/catalogue.'.$locale.'.'.$extension;
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+ }
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+
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+ /**
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+ * @throws \RuntimeException When cache file can't be wrote
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+ */
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+ protected function writeCacheFile($file, $content)
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+ {
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+ if (!is_dir(dirname($file))) {
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+ @mkdir(dirname($file), 0777, true);
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+ }
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+
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+ $tmpFile = tempnam(dirname($file), basename($file));
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+ if (false !== @file_put_contents($tmpFile, $content) && @rename($tmpFile, $file)) {
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+ chmod($file, 0644);
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+
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+ return;
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+ }
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+
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+ throw new \RuntimeException(sprintf('Failed to write cache file "%s".', $file));
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+ }
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+}
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Fabien Potencier