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<?php |
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declare(strict_types=1); |
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namespace Efabrica\Translatte; |
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use Efabrica\Translatte\Cache\ICache; |
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use Efabrica\Translatte\Cache\NullCache; |
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use Efabrica\Translatte\CurrentTranslate\DumbCurrentTranslate; |
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use Efabrica\Translatte\CurrentTranslate\ICurrentTranslate; |
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use Efabrica\Translatte\Resolver\IResolver; |
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use Efabrica\Translatte\Resolver\StaticResolver; |
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use Efabrica\Translatte\Resource\IResource; |
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use InvalidArgumentException; |
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use Nette\Localization\ITranslator; |
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class Translator implements ITranslator |
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{ |
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/** @var string */ |
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private $defaultLang; |
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/** @var string */ |
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private $lang; |
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/** @var IResolver */ |
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private $resolver; |
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/** @var ICache */ |
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private $cache; |
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/** @var ICurrentTranslate */ |
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private $currentTranslate; |
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/** @var array */ |
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private $resources = []; |
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/** @var array */ |
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private $fallbackLanguages = []; |
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/** @var Dictionary[] */ |
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private $dictionaries = []; |
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public function __construct( |
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string $defaultLang, |
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IResolver $resolver = null, |
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ICache $cache = null, |
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ICurrentTranslate $currentTranslate = null |
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) { |
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$this->defaultLang = $defaultLang; |
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$this->resolver = $resolver ?: new StaticResolver($defaultLang); |
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$this->cache = $cache ?: new NullCache(); |
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$this->currentTranslate = $currentTranslate ?: new DumbCurrentTranslate(); |
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$this->currentTranslate->init(); |
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} |
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/** |
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* Fallback languages will be used as waterfall, first with valid result is used |
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* @param array $fallbackLanguages |
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*/ |
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public function setFallbackLanguages(array $fallbackLanguages): void |
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{ |
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$this->fallbackLanguages = $fallbackLanguages; |
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} |
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/** |
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* Add new resource to parse translations from |
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* @param IResource $resource |
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* @return Translator |
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*/ |
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public function addResource(IResource $resource): self |
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{ |
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$this->resources[] = $resource; |
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return $this; |
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} |
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/** |
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* Provide translation |
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* @param string|int $message |
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* @param mixed ...$parameters |
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* @return string |
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*/ |
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public function translate($message, ...$parameters): string |
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{ |
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// translate($message, int $count, array $params, string $lang = null) |
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// translate($message, array $params, string $lang = null) |
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$message = (string) $message; |
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list($count, $params, $lang) = array_values($this->parseParameters($parameters)); |
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// If wrong input arguments passed, return message key |
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if (!is_int($count) || !is_array($params) || !is_string($lang)) { |
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$this->currentTranslateStore($message, $message, $lang, (int) strval($count), (array) $params); |
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return $message; // @ maybe throw exception? |
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} |
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$translation = $this->getDictionary($lang)->findTranslation($message); |
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if ($translation === null) { |
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// Try find translation in fallback languages |
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foreach ($this->fallbackLanguages as $fallbackLanguage) { |
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$translation = $this->getDictionary($fallbackLanguage)->findTranslation($message); |
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if ($translation !== null) { |
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break; |
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} |
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} |
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// If translation not found in base either fallback languages return message key |
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if ($translation === null) { |
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$this->currentTranslateStore($message, $translation, $lang, $count, $params); |
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return $message; |
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} |
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} |
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$translation = $this->selectRightPluralForm($translation, $lang, $count); |
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$translation = $this->replaceParams($translation, $params); |
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$this->currentTranslateStore($message, $translation, $lang, $count, $params); |
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return $translation; |
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} |
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/** |
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* Store current translate parameters |
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* @param string $message |
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* @param string|null $translation |
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* @param string $lang |
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* @param int $count |
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* @param array $params |
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* @return void |
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*/ |
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private function currentTranslateStore(string $message, ?string $translation, string $lang, int $count, array $params): void |
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{ |
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$this->currentTranslate->store([ |
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'message' => $message, |
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'translation' => $translation ?? '', |
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'lang' => $lang, |
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'count' => $count, |
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'params' => $params |
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]); |
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} |
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/** |
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* Select right plural form based on selected language |
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* @param string $translation |
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* @param string $lang |
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* @param int $count |
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* @return string |
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*/ |
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private function selectRightPluralForm(string $translation, string $lang, int $count): string |
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{ |
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$exploded = explode('|', $translation); |
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if (count($exploded) === 1) { |
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return $translation; |
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} |
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$pluralForm = PluralForm::get($count, $lang); |
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return isset($exploded[$pluralForm]) ? $exploded[$pluralForm] : $exploded[0]; |
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} |
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/** |
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* Replace parameters in translation string |
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* @param string $translation |
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* @param array $params |
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* @return string |
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*/ |
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private function replaceParams(string $translation, array $params): string |
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{ |
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$transParams = []; |
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foreach ($params as $key => $value) { |
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$transParams['%' . $key . '%'] = $value; |
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} |
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return strtr($translation, $transParams); |
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} |
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/** |
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* Parse translation input parameters |
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* @param array $parameters |
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* @return array |
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*/ |
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private function parseParameters(array $parameters): array |
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{ |
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if (!count($parameters)) { |
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return [ |
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'count' => 1, |
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'params' => ['count' => 1], |
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'lang' => $this->getResolvedLang() |
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]; |
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} |
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if (is_array($parameters[0])) { |
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return [ |
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'count' => isset($parameters[0]['count']) ? $parameters[0]['count'] : 1, |
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'params' => $parameters[0], |
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'lang' => array_key_exists(1, $parameters) ? $parameters[1] : $this->getResolvedLang() |
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]; |
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} |
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$params = array_key_exists(1, $parameters) ? $parameters[1] : []; |
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if (!isset($params['count'])) { |
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$params['count'] = $parameters[0]; |
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} |
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return [ |
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'count' => $parameters[0], |
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'params' => $params, |
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'lang' => array_key_exists(2, $parameters) ? $parameters[2] : $this->getResolvedLang() |
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]; |
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} |
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/** |
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* Use resolvers to resolve language to use |
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* @return string |
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*/ |
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private function getResolvedLang(): string |
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{ |
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if ($this->lang === null) { |
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$resolvedLang = $this->resolver->resolve(); |
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$this->lang = $resolvedLang !== null ? $resolvedLang : $this->defaultLang; |
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} |
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return $this->lang; |
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} |
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/** |
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* Prepare and return dictionary ready to use |
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* @param string $lang |
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* @return Dictionary |
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*/ |
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private function getDictionary(string $lang): Dictionary |
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{ |
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if (array_key_exists($lang, $this->dictionaries)) { |
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return $this->dictionaries[$lang]; |
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} |
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$dictionary = $this->cache->load($lang); |
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if ($dictionary !== null) { |
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$this->dictionaries[$lang] = $dictionary; |
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return $this->dictionaries[$lang]; |
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} |
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$this->dictionaries[$lang] = new Dictionary($lang); |
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foreach ($this->resources as $resource) { |
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$dictionaries = $resource->load($lang); |
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foreach ($dictionaries as $dictionary) { |
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$this->cache->store($lang, $dictionary->getRecords()); |
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if (!$dictionary instanceof Dictionary) { |
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throw new InvalidArgumentException(sprintf('%s expected. Resource returned %s', Dictionary::class, get_class($dictionary))); |
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} |
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$this->dictionaries[$lang]->extend($dictionary); |
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} |
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} |
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return $this->dictionaries[$lang]; |
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} |
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} |
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efabrica-team /
translatte
