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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\I18n\Translator; |
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use Yiisoft\I18n\MessageFormatterInterface; |
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use Psr\EventDispatcher\EventDispatcherInterface; |
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use Yiisoft\I18n\Event\MissingTranslationEvent; |
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use Yiisoft\I18n\Locale; |
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use Yiisoft\I18n\MessageReaderInterface; |
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use Yiisoft\I18n\TranslatorInterface; |
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class Translator implements TranslatorInterface |
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{ |
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private EventDispatcherInterface $eventDispatcher; |
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private MessageReaderInterface $messageReader; |
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private ?MessageFormatterInterface $messageFormatter; |
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private array $messages = []; |
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private ?string $locale = null; |
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private ?string $defaultLocale = null; |
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public function __construct( |
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EventDispatcherInterface $eventDispatcher, |
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MessageReaderInterface $messageReader, |
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MessageFormatterInterface $messageFormatter = null |
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) { |
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$this->messageReader = $messageReader; |
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$this->eventDispatcher = $eventDispatcher; |
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$this->messageFormatter = $messageFormatter; |
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} |
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/** |
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* Sets the current locale. |
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* |
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* @param string $locale The locale |
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*/ |
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public function setLocale(string $locale): void |
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{ |
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$this->locale = $locale; |
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} |
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/** |
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* Returns the current locale. |
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* |
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* @return string The locale |
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*/ |
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public function getLocale(): string |
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{ |
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return $this->locale ?? $this->getDefaultLocale(); |
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} |
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/** |
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* @param string $locale |
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*/ |
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public function setDefaultLocale(string $locale): void |
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{ |
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$this->defaultLocale = $locale; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function translate( |
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?string $message, |
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array $parameters = [], |
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string $category = null, |
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string $localeString = null |
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): ?string { |
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if ($localeString === null) { |
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$localeString = $this->getLocale(); |
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} |
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if ($category === null) { |
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$category = $this->getDefaultCategory(); |
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} |
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$messages = $this->getMessages($category, $localeString); |
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if (!array_key_exists($message, $messages)) { |
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$missingTranslation = new MissingTranslationEvent($category, $localeString, $message); |
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$this->eventDispatcher->dispatch($missingTranslation); |
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$locale = new Locale($localeString); |
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$fallback = $locale->fallbackLocale(); |
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if ($fallback->asString() !== $locale->asString()) { |
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return $this->translate($message, $parameters, $category, $fallback->asString()); |
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} |
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$defaultFallback = (new Locale($this->getDefaultLocale()))->fallbackLocale(); |
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if ($defaultFallback->asString() !== $fallback->asString()) { |
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return $this->translate($message, $parameters, $category, $this->getDefaultLocale()); |
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} |
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$messages[$message] = $message; |
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} |
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if ($this->messageFormatter === null) { |
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return $messages[$message]; |
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} |
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return $this->messageFormatter->format($messages[$message], $parameters, $localeString); |
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} |
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private function getMessages(string $category, string $language): array |
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{ |
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$key = $language . '/' . $category; |
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if (!array_key_exists($key, $this->messages)) { |
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$this->messages[$key] = $this->messageReader->all($key); |
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} |
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return $this->messages[$key]; |
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} |
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protected function getDefaultCategory(): string |
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{ |
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return 'default'; |
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} |
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protected function getDefaultLocale(): string |
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{ |
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return $this->defaultLocale ?? \Locale::getDefault(); |
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} |
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} |
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yiisoft /
i18n
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