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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\Extension;
- use Symfony\Bridge\Twig\NodeVisitor\TranslationDefaultDomainNodeVisitor;
- use Symfony\Bridge\Twig\NodeVisitor\TranslationNodeVisitor;
- use Symfony\Bridge\Twig\TokenParser\TransDefaultDomainTokenParser;
- use Symfony\Bridge\Twig\TokenParser\TransTokenParser;
- use Symfony\Component\Translation\TranslatableMessage;
- use Symfony\Contracts\Translation\TranslatableInterface;
- use Symfony\Contracts\Translation\TranslatorInterface;
- use Symfony\Contracts\Translation\TranslatorTrait;
- use Twig\Extension\AbstractExtension;
- use Twig\TwigFilter;
- use Twig\TwigFunction;
- // Help opcache.preload discover always-needed symbols
- class_exists(TranslatorInterface::class);
- class_exists(TranslatorTrait::class);
- /**
- * Provides integration of the Translation component with Twig.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
- final class TranslationExtension extends AbstractExtension
- {
- private $translator;
- private $translationNodeVisitor;
- public function __construct(TranslatorInterface $translator = null, TranslationNodeVisitor $translationNodeVisitor = null)
- {
- $this->translator = $translator;
- $this->translationNodeVisitor = $translationNodeVisitor;
- }
- public function getTranslator(): TranslatorInterface
- {
- if (null === $this->translator) {
- if (!interface_exists(TranslatorInterface::class)) {
- throw new \LogicException(sprintf('You cannot use the "%s" if the Translation Contracts are not available. Try running "composer require symfony/translation".', __CLASS__));
- }
- $this->translator = new class() implements TranslatorInterface {
- use TranslatorTrait;
- };
- }
- return $this->translator;
- }
- /**
- * {@inheritdoc}
- */
- public function getFunctions(): array
- {
- return [
- new TwigFunction('t', [$this, 'createTranslatable']),
- ];
- }
- /**
- * {@inheritdoc}
- */
- public function getFilters(): array
- {
- return [
- new TwigFilter('trans', [$this, 'trans']),
- ];
- }
- /**
- * {@inheritdoc}
- */
- public function getTokenParsers(): array
- {
- return [
- // {% trans %}Symfony is great!{% endtrans %}
- new TransTokenParser(),
- // {% trans_default_domain "foobar" %}
- new TransDefaultDomainTokenParser(),
- ];
- }
- /**
- * {@inheritdoc}
- */
- public function getNodeVisitors(): array
- {
- return [$this->getTranslationNodeVisitor(), new TranslationDefaultDomainNodeVisitor()];
- }
- public function getTranslationNodeVisitor(): TranslationNodeVisitor
- {
- return $this->translationNodeVisitor ?: $this->translationNodeVisitor = new TranslationNodeVisitor();
- }
- /**
- * @param string|\Stringable|TranslatableInterface|null $message
- * @param array|string $arguments Can be the locale as a string when $message is a TranslatableInterface
- */
- public function trans($message, $arguments = [], string $domain = null, string $locale = null, int $count = null): string
- {
- if ($message instanceof TranslatableInterface) {
- if ([] !== $arguments && !\is_string($arguments)) {
- throw new \TypeError(sprintf('Argument 2 passed to "%s()" must be a locale passed as a string when the message is a "%s", "%s" given.', __METHOD__, TranslatableInterface::class, get_debug_type($arguments)));
- }
- return $message->trans($this->getTranslator(), $locale ?? (\is_string($arguments) ? $arguments : null));
- }
- if (!\is_array($arguments)) {
- throw new \TypeError(sprintf('Unless the message is a "%s", argument 2 passed to "%s()" must be an array of parameters, "%s" given.', TranslatableInterface::class, __METHOD__, get_debug_type($arguments)));
- }
- if ('' === $message = (string) $message) {
- return '';
- }
- if (null !== $count) {
- $arguments['%count%'] = $count;
- }
- return $this->getTranslator()->trans($message, $arguments, $domain, $locale);
- }
- public function createTranslatable(string $message, array $parameters = [], string $domain = null): TranslatableMessage
- {
- if (!class_exists(TranslatableMessage::class)) {
- throw new \LogicException(sprintf('You cannot use the "%s" as the Translation Component is not installed. Try running "composer require symfony/translation".', __CLASS__));
- }
- return new TranslatableMessage($message, $parameters, $domain);
- }
- }
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