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<?php |
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/** |
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* BCKP Translator |
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* (c) Radovan Kepák |
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* |
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* For the full copyright and license information, please view |
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* the file license.md that was distributed with this source code. |
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* |
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* @author Radovan Kepak <[email protected]> |
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*/ |
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declare(strict_types=1); |
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namespace Bckp\Translator; |
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use Nette\Utils\Strings; |
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use function array_key_exists; |
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use function end; |
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use function gettype; |
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use function is_array; |
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use function is_object; |
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use function is_string; |
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use function key; |
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use function method_exists; |
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use function vsprintf; |
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/** |
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* Class Translator |
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* |
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* @package Bckp\Translator |
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*/ |
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class Translator implements ITranslator |
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{ |
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/** @var ICatalogue */ |
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private $catalogue; |
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/** @var IDiagnostics|null */ |
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private $diagnostics; |
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/** @var callable function(string $string): string */ |
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private $normalizeCallback; |
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/** |
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* Translator constructor. |
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* |
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* @param ICatalogue $catalogue |
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* @param IDiagnostics|null $diagnostics |
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*/ |
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public function __construct(ICatalogue $catalogue, IDiagnostics $diagnostics = null) |
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{ |
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$this->catalogue = $catalogue; |
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$this->normalizeCallback = [$this, 'normalize']; |
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if ($this->diagnostics = $diagnostics) { |
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$this->diagnostics->setLocale($catalogue->locale()); |
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} |
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} |
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/** |
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* Normalize string to preserve frameworks placeholders |
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* |
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* @param string $string |
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* @return string |
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*/ |
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public function normalize(string $string): string |
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{ |
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return str_replace( |
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['%label', '%value', '%name'], |
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['%%label', '%%value', '%%name'], |
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$string |
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); |
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} |
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/** |
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* @param callable $callback |
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* @return void |
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*/ |
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public function setNormalizeCallback(callable $callback): void |
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{ |
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$this->normalizeCallback = $callback; |
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} |
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/** |
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* @param mixed $message |
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* @param mixed ...$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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if (empty($message)) { |
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return ''; |
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} |
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$form = null; |
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$message = $this->getMessage($message, $form); |
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if ($message === null) { |
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return $this->warn('Expected string|array|object::__toString, but %s given.', gettype($message)); |
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} |
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$result = $message; |
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$this->expandParameters($parameters, $message); |
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// process plural if any |
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if ($translation = $this->catalogue->get($message)) { |
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$result = $this->getVariant($message, $translation, $form); |
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if ($parameters) { |
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$result = ($this->normalizeCallback)($result); |
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$result = @vsprintf($result, $parameters); |
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// Intentionally @ as argument count can mismatch |
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} |
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} else { |
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$this->untranslated((string)$message); |
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} |
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return $result; |
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} |
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/** |
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* @param string $message |
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* @param string|array<string> $translation |
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* @param string|null $form |
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* @return string |
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*/ |
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private function getVariant(string $message, $translation, string $form = null): string |
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{ |
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if (!is_array($translation)) { |
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return $translation; |
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} |
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if ($form === null || !array_key_exists($form, $translation)) { |
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$this->warn( |
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'Plural form not defined. (message: %s, form: %s)', |
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(string)$message, |
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(string)$form |
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); |
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end($translation); |
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$form = key($translation); |
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} |
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return $translation[$form]; |
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} |
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/** |
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* @param mixed $message |
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* @param string|null $plural |
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* @return string|null |
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*/ |
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protected function getMessage($message, ?string &$plural): ?string |
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{ |
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if (is_string($message)) { |
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return $message; |
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} |
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if (is_array($message) && is_string($message[0])) { |
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$plural = $this->catalogue->plural((int)$message[1] ?? 1); |
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return $message[0]; |
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} |
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if (is_object($message) && method_exists($message, '__toString')) { |
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return (string)$message; |
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} |
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return null; |
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} |
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/** |
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* @param string $message |
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*/ |
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protected function untranslated(string $message): void |
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{ |
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if ($this->diagnostics !== null) { |
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$this->diagnostics->untranslated($message); |
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} |
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} |
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/** |
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* @param string $message |
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* @param mixed ...$parameters |
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* @return string |
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*/ |
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protected function warn(string $message, ...$parameters): string |
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{ |
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if (!empty($parameters)) { |
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$message = @vsprintf($message, $parameters); |
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} // Intentionally @ as parameter count can mismatch |
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if ($this->diagnostics !== null) { |
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$this->diagnostics->warning($message); |
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} |
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return $message; |
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} |
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/** |
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* @param array<mixed> $parameters |
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* @param string|array<string|int> $message |
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*/ |
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private function expandParameters(array &$parameters, $message): void |
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{ |
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if ( |
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empty($parameters) |
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&& is_array($message) |
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&& is_numeric($message[1] ?? null) |
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) { |
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$parameters[] = $message[1]; |
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} |
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} |
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} |
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bckp /
translator-core
