Translator

Translator.php

<?php
namespace Service\Translation;

use Common\Config;
use Common\Log;
use GMO\Common\Collections\ArrayCollection;
use GMO\Common\String;
use Pimple;
use Symfony\Component\Finder\Finder;
use Symfony\Component\Translation\Translator as BaseTranslator;
use Symfony\Component\Translation\MessageSelector;

/**
 * Translator can extend Silex's once this pr is merged.
 * https://github.com/silexphp/Silex/pull/1090
 */
class Translator extends BaseTranslator {

	/**
	 * {@inheritdoc}
	 */
	public function getLocale() {
		return $this->container['locale'];
	}

	public function setLocale($locale) {
		if ($locale === null) {
			return;
		}
		parent::setLocale($locale);
		$this->container['locale'] = $locale;
	}

	/**
	 * Caches non fresh catalogues for locale provided
	 * or all locales we have translations for
	 * @param string $localeToCache
	 */
	public function warmCache($localeToCache = null) {
		$locales = $localeToCache ? array($localeToCache) : $this->getAllSupportedLocales();
		foreach ($locales as $locale) {
			$this->loadCatalogue($locale);
		}
	}

	protected function initializeCatalogue($locale) {
		$genericLocale = String::splitFirst($locale, '_');
		foreach ($this->getFilesForLocale($genericLocale) as $file) {
			$this->logger->debug('translation file added: ' . $file);
			$this->addResource('yaml', (string) $file, $genericLocale);
		}

		foreach ($this->getFallbackLocales() as $fallbackLocale) {
			foreach ($this->getFilesForLocale($fallbackLocale) as $file) {
				$this->logger->debug('fallback translation file added: ' . $file);
				$this->addResource('yaml', (string) $file, $fallbackLocale);
			}
		}

		/*
		 * Needed until this pr is merged
		 * https://github.com/silexphp/Silex/pull/1086
		 */
		$this->addComponentResource('Symfony\Component\Validator\Validator', $locale);
		$this->addComponentResource('Symfony\Component\Form\Form', $locale);

		parent::initializeCatalogue($locale);
	}

	protected function getAllSupportedLocales() {
		return ArrayCollection::create(
			Finder::create()
				->files()
				->in(Config::absPath('translations'))
				->exclude(Config::getTranslationCacheDir())
				->name("*.yml")
				->getIterator()
		)->map(function($file) {
			preg_match('#.+\\.(.+)\\.yml#', $file, $matches);
			return $matches[1];
		})->unique();
	}

	protected function getFilesForLocale($locale) {
		return Finder::create()
				->files()
				->in(Config::absPath('translations'))
				->exclude(Config::getTranslationCacheDir())
				->name("*.$locale.yml");
	}

	private function addComponentResource($cls, $locale) {
		$r = new \ReflectionClass($cls);
		$file = dirname($r->getFilename()) . '/Resources/translations/validators.' . $locale . '.xlf';
		if (file_exists($file)) {
			$this->addResource('xliff', $file, $locale);
		}
	}

	public function __construct(Pimple $container, MessageSelector $selector, $cacheDir = null, $debug = false) {
		$this->container = $container;
		$this->logger = Log::create()->getLogger();
		parent::__construct(null, $selector, $cacheDir, $debug);
	}

	protected $container;
	/** @var \Psr\Log\LoggerInterface */
	protected $logger;
}