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<?php |
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declare(strict_types=1); |
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namespace Foo\Translate; |
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class Translator implements ITranslator |
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{ |
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const DEFAULT_LANGUAGE = 'DEFAULT_LANGUAGE'; |
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/** @var Loader */ |
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protected $loader; |
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/** @var string */ |
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protected $lang = 'en'; |
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/** @var array */ |
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protected $translations = []; |
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/** |
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* Translator constructor. |
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* |
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* @param Loader $loader |
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*/ |
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public function __construct(Loader $loader) |
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{ |
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$this->loader = $loader; |
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} |
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/** |
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* @param string |
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* |
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* @return array |
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*/ |
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public function getTranslations(string $lang): array |
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{ |
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if (!array_key_exists($lang, $this->translations)) { |
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$this->translations[$lang] = $this->loader->loadTranslations($lang); |
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} |
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if (empty($this->translations[$lang])) { |
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throw new Exception("{{language is missing: $lang}}"); |
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} |
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return $this->translations[$lang]; |
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} |
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/** |
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* @param array $translations |
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* @param string $key |
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* @param string $lang |
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*/ |
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public function setTranslations(array $translations, string $key = null, string $lang = null) |
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{ |
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if (null === $lang && null === $key) { |
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$this->translations = $translations; |
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return; |
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} |
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$lang = $lang ?? $this->getLang(); |
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if (null === $key) { |
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$this->translations[$lang] = $translations; |
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return; |
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} |
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$this->translations[$lang][$key] = $translations; |
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} |
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/** |
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* @return string |
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*/ |
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public function getLang(): string |
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{ |
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if (null === $this->lang) { |
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$this->lang = getenv(static::DEFAULT_LANGUAGE); |
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} |
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return $this->lang; |
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} |
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/** |
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* @param string $lang |
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* |
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* @return Translator |
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*/ |
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public function setLang(string $lang): Translator |
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{ |
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$this->lang = $lang; |
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return $this; |
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} |
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/** |
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* @param string $key |
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* @param array ...$args |
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* |
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* @return string |
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*/ |
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public function translate(string $key, ...$args): string |
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{ |
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return $this->translateByArgs($key, $args); |
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} |
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/** |
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* @param string $key |
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* @param array $args |
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* |
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* @return string |
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*/ |
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public function translateByArgs(string $key, array $args = []): string |
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{ |
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try { |
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$translation = $this->findTranslation($key); |
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$args = $this->translateArguments($args); |
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$translated = $this->execute($translation, $args, $key); |
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} catch (Exception $e) { |
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return $e->getMessage(); |
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} |
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return $translated; |
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} |
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/** |
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* @param string $key |
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* |
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* @return string |
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*/ |
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private function findTranslation(string $key): string |
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{ |
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$pathParts = explode(':', $key); |
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$translations = $this->getTranslations($this->getLang()); |
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foreach ($pathParts as $pathPart) { |
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if (!array_key_exists($pathPart, $translations)) { |
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throw new Exception("{{translation is missing: $key}}"); |
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} |
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$translations = &$translations[$pathPart]; |
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} |
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if (!is_string($translations)) { |
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throw new Exception("{{translation is ambiguous: $key}}"); |
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} |
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return $translations; |
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} |
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/** |
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* @param array $args |
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* |
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* @return array |
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*/ |
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private function translateArguments(array $args): array |
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{ |
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foreach ($args as $argKey => $argValue) { |
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if (!is_string($argValue)) { |
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continue; |
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} |
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if (!preg_match('/{{(.+)}}/Ums', $argValue, $match)) { |
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continue; |
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} |
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$args[$argKey] = $this->translateByArgs($match[1]); |
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} |
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return $args; |
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} |
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/** |
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* @param string $translation |
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* @param array $args |
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* @param string $key |
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* |
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* @return string |
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*/ |
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private function execute(string $translation, array $args, string $key): string |
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{ |
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$result = @vsprintf($translation, $args); |
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if (!is_string($result)) { |
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throw new Exception("{{translation argument list failure: $key}}"); |
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} |
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return $result; |
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} |
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} |
peteraba /
FooTranslate
