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<?php |
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namespace Elgg\I18n; |
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use Elgg\Config; |
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use Elgg\Includer; |
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use Elgg\Traits\Loggable; |
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/** |
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* Translator |
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* |
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* Use elgg()->translator |
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* |
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* @since 1.10.0 |
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*/ |
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class Translator { |
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use Loggable; |
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protected array $translations = []; |
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protected string $defaultPath; |
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protected ?string $current_language = null; |
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protected array $allowed_languages; |
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/** |
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* Paths to scan for autoloading languages. |
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* |
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* Languages are automatically loaded for the site or |
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* user's default language. Plugins can extend or override strings. |
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* language_paths is an array of paths to scan for PHP files matching |
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* the default language. The order of paths is determined by the plugin load order, |
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* with later entries overriding earlier. Language files within these paths are |
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* named as the two-letter ISO 639-1 country codes for the language they represent. |
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* |
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* @link http://en.wikipedia.org/wiki/ISO_639-1 |
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* |
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* @var array (paths are keys) |
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*/ |
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protected array $language_paths = []; |
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protected bool $was_reloaded = false; |
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/** |
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* Constructor |
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* |
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* @param Config $config Elgg config |
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* @param LocaleService $locale locale service |
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*/ |
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public function __construct(protected Config $config, protected LocaleService $locale) { |
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$this->defaultPath = dirname(__DIR__, 4) . '/languages/'; |
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$this->registerLanguagePath($this->defaultPath); |
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} |
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/** |
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* Get a map of all loaded translations |
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* |
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* @return array |
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*/ |
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public function getLoadedTranslations(): array { |
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return $this->translations; |
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} |
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/** |
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* Given a message key, returns an appropriately translated full-text string |
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* |
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* @param string $message_key The short message code |
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* @param array $args An array of arguments to pass through vsprintf(). |
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* @param string $language Optionally, the standard language code |
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* (defaults to site/user default, then English) |
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* |
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* @return string Either the translated string, the English string or the original language string. |
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*/ |
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public function translate(string $message_key, array $args = [], string $language = ''): string { |
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if (\Elgg\Values::isEmpty($message_key)) { |
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return ''; |
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} |
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// if no language provided, get current language based on detection, user setting or site |
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$language = $language ?: $this->getCurrentLanguage(); |
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// build language array for different trys |
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// avoid dupes without overhead of array_unique |
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$langs = [ |
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$language => true, |
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]; |
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// load site language |
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$site_language = $this->config->language; |
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if (!empty($site_language)) { |
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$langs[$site_language] = true; |
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} |
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// ultimate language fallback |
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$langs['en'] = true; |
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$langs = array_intersect_key($langs, array_flip($this->getAllowedLanguages())); |
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// try to translate |
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$string = $message_key; |
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foreach (array_keys($langs) as $try_lang) { |
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$this->ensureTranslationsLoaded($try_lang); |
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if (isset($this->translations[$try_lang][$message_key])) { |
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$string = $this->translations[$try_lang][$message_key]; |
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// only pass through if we have arguments to allow backward compatibility |
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// with manual sprintf() calls. |
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if (!empty($args)) { |
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try { |
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$string = vsprintf($string, $args); |
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if ($string === false) { |
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$string = $message_key; |
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$this->getLogger()->warning("Translation error for key '{$message_key}': Too few arguments provided (" . var_export($args, true) . ')'); |
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} |
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} catch (\ValueError $e) { |
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// PHP 8 throws errors |
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$string = $message_key; |
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$this->getLogger()->warning("Translation error for key '{$message_key}': " . $e->getMessage()); |
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} |
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} |
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break; |
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} else { |
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$message = sprintf( |
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'Missing %s translation for "%s" language key', |
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($try_lang === 'en') ? 'English' : $try_lang, |
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$message_key |
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); |
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if ($try_lang === 'en') { |
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$this->getLogger()->notice($message); |
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} else { |
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$this->getLogger()->info($message); |
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} |
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} |
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} |
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return $string; |
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} |
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/** |
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* Add a translation. |
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* |
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* Translations are arrays in the Zend Translation array format, eg: |
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* |
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* $english = array('message1' => 'message1', 'message2' => 'message2'); |
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* $german = array('message1' => 'Nachricht1','message2' => 'Nachricht2'); |
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* |
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* @param string $country_code Standard country code (eg 'en', 'nl', 'es') |
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* @param array $language_array Formatted array of strings |
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* @param bool $ensure_translations_loaded Ensures translations are loaded before adding the language array (default: true) |
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* |
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* @return bool Depending on success |
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*/ |
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public function addTranslation(string $country_code, array $language_array, bool $ensure_translations_loaded = true): bool { |
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$country_code = trim(strtolower($country_code)); |
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if (empty($language_array) || $country_code === '') { |
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return false; |
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} |
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if (!isset($this->translations[$country_code])) { |
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$this->translations[$country_code] = []; |
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if ($ensure_translations_loaded) { |
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// make sure all existing paths are included first before adding language arrays |
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$this->loadTranslations($country_code); |
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} |
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} |
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// Note that we are using union operator instead of array_merge() due to performance implications |
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$this->translations[$country_code] = $language_array + $this->translations[$country_code]; |
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return true; |
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} |
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/** |
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* Get the current system/user language or 'en'. |
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* |
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* @return string |
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*/ |
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public function getCurrentLanguage(): string { |
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if (!isset($this->current_language)) { |
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$this->current_language = $this->detectLanguage(); |
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} |
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if (empty($this->current_language)) { |
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$this->current_language = 'en'; |
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} |
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return $this->current_language; |
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} |
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/** |
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* Sets current system language |
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* |
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* @param string $language Language code |
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* |
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* @return void |
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*/ |
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public function setCurrentLanguage(string $language = null): void { |
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$this->current_language = $language; |
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} |
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/** |
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* Detect the current system/user language or false. |
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* |
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* @return string The language code (eg 'en') |
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* |
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* @internal |
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*/ |
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public function detectLanguage(): string { |
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// detect from URL |
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$url_lang = _elgg_services()->request->getParam('hl'); |
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$user = _elgg_services()->session_manager->getLoggedInUser(); |
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if (!empty($url_lang)) { |
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// store language for logged out users |
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if (empty($user)) { |
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$cookie = new \ElggCookie('language'); |
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$cookie->value = $url_lang; |
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elgg_set_cookie($cookie); |
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} |
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return $url_lang; |
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} |
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// detect from cookie |
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$cookie = _elgg_services()->request->cookies->get('language'); |
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if (!empty($cookie)) { |
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return $cookie; |
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} |
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// check logged in user |
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if (!empty($user) && !empty($user->language)) { |
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return $user->language; |
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} |
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// detect from browser if not logged in |
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3087 |
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if ($this->config->language_detect_from_browser) { |
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$browserlangs = _elgg_services()->request->getLanguages(); |
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3087 |
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if (!empty($browserlangs)) { |
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$browserlang = explode('_', $browserlangs[0]); |
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return $browserlang[0]; |
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} |
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} |
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// get site setting or empty string if not set in config |
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3038 |
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return (string) $this->config->language; |
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} |
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/** |
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* Ensures all needed translations are loaded |
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* |
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* This loads only English and the language of the logged in user. |
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* |
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* @return void |
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* |
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* @internal |
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*/ |
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2923 |
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public function bootTranslations(): void { |
270
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2923 |
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$languages = array_unique(['en', $this->getCurrentLanguage()]); |
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2923 |
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foreach ($languages as $language) { |
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2923 |
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$this->loadTranslations($language); |
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} |
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} |
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/** |
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* Load both core and plugin translations |
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* |
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* The $language argument can be used to load translations |
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* on-demand in case we need to translate something to a language not |
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* loaded by default for the current request. |
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* |
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* @param string $language Language code |
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* |
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* @return void |
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* |
288
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* @internal |
289
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*/ |
290
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3209 |
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public function loadTranslations(string $language): void { |
291
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3209 |
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$data = elgg_load_system_cache("{$language}.lang"); |
292
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3209 |
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if (is_array($data)) { |
293
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2962 |
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$this->addTranslation($language, $data, false); |
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2962 |
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return; |
295
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} |
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297
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259 |
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foreach ($this->getLanguagePaths() as $path) { |
298
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259 |
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$this->registerTranslations($path, false, $language); |
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} |
300
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301
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259 |
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$translations = elgg_extract($language, $this->translations, []); |
302
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259 |
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elgg_save_system_cache("{$language}.lang", $translations); |
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} |
304
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305
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/** |
306
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* When given a full path, finds translation files and loads them |
307
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* |
308
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* @param string $path Full path |
309
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* @param bool $load_all If true all languages are loaded, if |
310
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* false only the current language + en are loaded |
311
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* @param string $language Language code |
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* |
313
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* @return bool success |
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* |
315
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* @internal |
316
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*/ |
317
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1116 |
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public function registerTranslations(string $path, bool $load_all = false, string $language = null): bool { |
318
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1116 |
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$path = \Elgg\Project\Paths::sanitize($path); |
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320
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// don't need to register translations as the folder is missing |
321
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1116 |
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if (!is_dir($path)) { |
322
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$this->getLogger()->info("No translations could be loaded from: {$path}"); |
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return true; |
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} |
325
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326
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// Make a note of this path just in case we need to register this language later |
327
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1116 |
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$this->registerLanguagePath($path); |
328
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329
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1116 |
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$this->getLogger()->info("Translations loaded from: {$path}"); |
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331
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1116 |
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if ($language) { |
332
|
1106 |
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$load_language_files = ["{$language}.php"]; |
333
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1106 |
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$load_all = false; |
334
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} else { |
335
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// Get the current language based on site defaults and user preference |
336
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24 |
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$current_language = $this->getCurrentLanguage(); |
337
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338
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24 |
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$load_language_files = [ |
339
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24 |
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'en.php', |
340
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24 |
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"{$current_language}.php" |
341
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24 |
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]; |
342
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343
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24 |
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$load_language_files = array_unique($load_language_files); |
344
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} |
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346
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1116 |
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$handle = opendir($path); |
347
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1116 |
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if (empty($handle)) { |
348
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$this->getLogger()->error("Could not open language path: {$path}"); |
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return false; |
350
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} |
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352
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1116 |
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$return = true; |
353
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1116 |
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while (($language_file = readdir($handle)) !== false) { |
354
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// ignore bad files |
355
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1116 |
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if (str_starts_with($language_file, '.') || !str_ends_with($language_file, '.php')) { |
356
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1116 |
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continue; |
357
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} |
358
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359
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1116 |
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if (in_array($language_file, $load_language_files) || $load_all) { |
360
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1116 |
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$return = $return && $this->includeLanguageFile($path . $language_file); |
361
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} |
362
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} |
363
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364
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1116 |
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closedir($handle); |
365
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366
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1116 |
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return $return; |
367
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} |
368
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369
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/** |
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* Load cached or include a language file by its path |
371
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* |
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* @param string $path Path to file |
373
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|
|
* @return bool |
374
|
|
|
* |
375
|
|
|
* @internal |
376
|
|
|
*/ |
377
|
905 |
|
protected function includeLanguageFile(string $path): bool { |
378
|
905 |
|
$result = Includer::includeFile($path); |
379
|
|
|
|
380
|
905 |
|
if (is_array($result)) { |
381
|
905 |
|
$this->addTranslation(basename($path, '.php'), $result); |
382
|
905 |
|
return true; |
383
|
|
|
} |
384
|
|
|
|
385
|
|
|
$this->getLogger()->warning("Language file did not return an array: {$path}"); |
386
|
|
|
|
387
|
|
|
return false; |
388
|
|
|
} |
389
|
|
|
|
390
|
|
|
/** |
391
|
|
|
* Reload all translations from all registered paths. |
392
|
|
|
* |
393
|
|
|
* This is only called by functions which need to know all possible translations. |
394
|
|
|
* |
395
|
|
|
* @return void |
396
|
|
|
* |
397
|
|
|
* @internal |
398
|
|
|
*/ |
399
|
410 |
|
public function reloadAllTranslations(): void { |
400
|
410 |
|
if ($this->was_reloaded) { |
401
|
410 |
|
return; |
402
|
|
|
} |
403
|
|
|
|
404
|
410 |
|
$languages = $this->getAvailableLanguages(); |
405
|
|
|
|
406
|
410 |
|
foreach ($languages as $language) { |
407
|
410 |
|
$this->ensureTranslationsLoaded($language); |
408
|
|
|
} |
409
|
|
|
|
410
|
410 |
|
_elgg_services()->events->triggerAfter('reload', 'translations'); |
411
|
|
|
|
412
|
410 |
|
$this->was_reloaded = true; |
413
|
|
|
} |
414
|
|
|
|
415
|
|
|
/** |
416
|
|
|
* Return an array of installed translations as an associative |
417
|
|
|
* array "two letter code" => "native language name". |
418
|
|
|
* |
419
|
|
|
* @param boolean $calculate_completeness Set to true if you want a completeness postfix added to the language text |
420
|
|
|
* |
421
|
|
|
* @return array |
422
|
|
|
*/ |
423
|
448 |
|
public function getInstalledTranslations(bool $calculate_completeness = false): array { |
424
|
448 |
|
if ($calculate_completeness) { |
425
|
|
|
// Ensure that all possible translations are loaded |
426
|
|
|
$this->reloadAllTranslations(); |
427
|
|
|
} |
428
|
|
|
|
429
|
448 |
|
$result = []; |
430
|
|
|
|
431
|
448 |
|
$languages = $this->getAvailableLanguages(); |
432
|
448 |
|
foreach ($languages as $language) { |
433
|
448 |
|
if ($this->languageKeyExists($language, $language)) { |
434
|
448 |
|
$value = $this->translate($language, [], $language); |
435
|
|
|
} else { |
436
|
433 |
|
$value = $this->translate($language); |
437
|
|
|
} |
438
|
|
|
|
439
|
448 |
|
if (($language !== 'en') && $calculate_completeness) { |
440
|
|
|
$completeness = $this->getLanguageCompleteness($language); |
441
|
|
|
$value .= ' (' . $completeness . '% ' . $this->translate('complete') . ')'; |
442
|
|
|
} |
443
|
|
|
|
444
|
448 |
|
$result[$language] = $value; |
445
|
|
|
} |
446
|
|
|
|
447
|
448 |
|
natcasesort($result); |
448
|
|
|
|
449
|
448 |
|
return $result; |
450
|
|
|
} |
451
|
|
|
|
452
|
|
|
/** |
453
|
|
|
* Return the level of completeness for a given language code (compared to english) |
454
|
|
|
* |
455
|
|
|
* @param string $language Language |
456
|
|
|
* |
457
|
|
|
* @return float |
458
|
|
|
*/ |
459
|
440 |
|
public function getLanguageCompleteness(string $language): float { |
460
|
440 |
|
if ($language === 'en') { |
461
|
30 |
|
return (float) 100; |
462
|
|
|
} |
463
|
|
|
|
464
|
|
|
// Ensure that all possible translations are loaded |
465
|
410 |
|
$this->reloadAllTranslations(); |
466
|
|
|
|
467
|
410 |
|
$en = count($this->translations['en']); |
468
|
|
|
|
469
|
410 |
|
$missing = count($this->getMissingLanguageKeys($language)); |
470
|
|
|
|
471
|
410 |
|
$lang = $en - $missing; |
472
|
|
|
|
473
|
410 |
|
return round(($lang / $en) * 100, 2); |
474
|
|
|
} |
475
|
|
|
|
476
|
|
|
/** |
477
|
|
|
* Return the translation keys missing from a given language, |
478
|
|
|
* or those that are identical to the english version. |
479
|
|
|
* |
480
|
|
|
* @param string $language The language |
481
|
|
|
* |
482
|
|
|
* @return array |
483
|
|
|
* |
484
|
|
|
* @internal |
485
|
|
|
*/ |
486
|
410 |
|
public function getMissingLanguageKeys(string $language): array { |
487
|
|
|
// Ensure that all possible translations are loaded |
488
|
410 |
|
$this->reloadAllTranslations(); |
489
|
|
|
|
490
|
410 |
|
$missing = []; |
491
|
|
|
|
492
|
410 |
|
foreach ($this->translations['en'] as $k => $v) { |
493
|
410 |
|
if (!isset($this->translations[$language][$k]) || ($this->translations[$language][$k] === $this->translations['en'][$k])) { |
494
|
410 |
|
$missing[] = $k; |
495
|
|
|
} |
496
|
|
|
} |
497
|
|
|
|
498
|
410 |
|
return $missing; |
499
|
|
|
} |
500
|
|
|
|
501
|
|
|
/** |
502
|
|
|
* Check if a given language key exists |
503
|
|
|
* |
504
|
|
|
* @param string $key The translation key |
505
|
|
|
* @param string $language The specific language to check |
506
|
|
|
* |
507
|
|
|
* @return bool |
508
|
|
|
* @since 1.11 |
509
|
|
|
*/ |
510
|
2933 |
|
public function languageKeyExists(string $key, string $language = 'en'): bool { |
511
|
2933 |
|
if (\Elgg\Values::isEmpty($key)) { |
512
|
|
|
return false; |
513
|
|
|
} |
514
|
|
|
|
515
|
2933 |
|
$this->ensureTranslationsLoaded($language); |
516
|
|
|
|
517
|
2933 |
|
if (!array_key_exists($language, $this->translations)) { |
518
|
|
|
return false; |
519
|
|
|
} |
520
|
|
|
|
521
|
2933 |
|
return array_key_exists($key, $this->translations[$language]); |
522
|
|
|
} |
523
|
|
|
|
524
|
|
|
/** |
525
|
|
|
* Returns an array of all available language keys. Triggers an event to allow plugins to add/remove languages |
526
|
|
|
* |
527
|
|
|
* @return array |
528
|
|
|
* @since 3.0 |
529
|
|
|
*/ |
530
|
2950 |
|
public function getAvailableLanguages(): array { |
531
|
2950 |
|
$languages = []; |
532
|
|
|
|
533
|
2950 |
|
$allowed_languages = $this->locale->getLanguageCodes(); |
534
|
|
|
|
535
|
2950 |
|
foreach ($this->getLanguagePaths() as $path) { |
536
|
|
|
try { |
537
|
2950 |
|
$iterator = new \DirectoryIterator($path); |
538
|
|
|
} catch (\Exception $e) { |
539
|
|
|
continue; |
540
|
|
|
} |
541
|
|
|
|
542
|
2950 |
|
foreach ($iterator as $file) { |
543
|
2950 |
|
if ($file->isDir()) { |
544
|
2950 |
|
continue; |
545
|
|
|
} |
546
|
|
|
|
547
|
2950 |
|
if ($file->getExtension() !== 'php') { |
548
|
|
|
continue; |
549
|
|
|
} |
550
|
|
|
|
551
|
2950 |
|
$language = $file->getBasename('.php'); |
552
|
2950 |
|
if (empty($language) || !in_array($language, $allowed_languages)) { |
553
|
|
|
continue; |
554
|
|
|
} |
555
|
|
|
|
556
|
2950 |
|
$languages[$language] = true; |
557
|
|
|
} |
558
|
|
|
} |
559
|
|
|
|
560
|
2950 |
|
return _elgg_services()->events->triggerResults('languages', 'translations', [], array_keys($languages)); |
561
|
|
|
} |
562
|
|
|
|
563
|
|
|
/** |
564
|
|
|
* Returns an array of allowed languages as configured by the site admin |
565
|
|
|
* |
566
|
|
|
* @return string[] |
567
|
|
|
* @since 3.3 |
568
|
|
|
*/ |
569
|
3825 |
|
public function getAllowedLanguages(): array { |
570
|
3825 |
|
if (isset($this->allowed_languages)) { |
571
|
3732 |
|
return $this->allowed_languages; |
572
|
|
|
} |
573
|
|
|
|
574
|
3104 |
|
$allowed_languages = $this->config->allowed_languages; |
575
|
3104 |
|
if (!empty($allowed_languages)) { |
576
|
171 |
|
$allowed_languages = explode(',', $allowed_languages); |
577
|
171 |
|
$allowed_languages = array_filter(array_unique($allowed_languages)); |
578
|
|
|
} else { |
579
|
2933 |
|
$allowed_languages = $this->getAvailableLanguages(); |
580
|
|
|
} |
581
|
|
|
|
582
|
3104 |
|
if (!in_array($this->config->language, $allowed_languages)) { |
583
|
|
|
// site language is always allowed |
584
|
2 |
|
$allowed_languages[] = $this->config->language; |
585
|
|
|
} |
586
|
|
|
|
587
|
3104 |
|
if (!in_array('en', $allowed_languages)) { |
588
|
|
|
// 'en' language is always allowed |
589
|
2 |
|
$allowed_languages[] = 'en'; |
590
|
|
|
} |
591
|
|
|
|
592
|
3104 |
|
$this->allowed_languages = $allowed_languages; |
593
|
|
|
|
594
|
3104 |
|
return $allowed_languages; |
595
|
|
|
} |
596
|
|
|
|
597
|
|
|
/** |
598
|
|
|
* Registers a path for potential translation files |
599
|
|
|
* |
600
|
|
|
* @param string $path path to a folder that contains translation files |
601
|
|
|
* |
602
|
|
|
* @return void |
603
|
|
|
* |
604
|
|
|
* @internal |
605
|
|
|
*/ |
606
|
7526 |
|
public function registerLanguagePath(string $path): void { |
607
|
7526 |
|
if (isset($this->language_paths[$path])) { |
608
|
3124 |
|
return; |
609
|
|
|
} |
610
|
|
|
|
611
|
7496 |
|
if (!is_dir($path)) { |
612
|
2904 |
|
return; |
613
|
|
|
} |
614
|
|
|
|
615
|
7493 |
|
$this->language_paths[$path] = true; |
616
|
|
|
} |
617
|
|
|
|
618
|
|
|
/** |
619
|
|
|
* Returns a unique array with locations of translation files |
620
|
|
|
* |
621
|
|
|
* @return array |
622
|
|
|
* |
623
|
|
|
* @internal |
624
|
|
|
*/ |
625
|
2980 |
|
public function getLanguagePaths(): array { |
626
|
2980 |
|
return array_keys($this->language_paths); |
627
|
|
|
} |
628
|
|
|
|
629
|
|
|
/** |
630
|
|
|
* Make sure translations are loaded |
631
|
|
|
* |
632
|
|
|
* @param string $language Language |
633
|
|
|
* |
634
|
|
|
* @return void |
635
|
|
|
*/ |
636
|
3843 |
|
protected function ensureTranslationsLoaded(string $language): void { |
637
|
3843 |
|
if (isset($this->translations[$language])) { |
638
|
3768 |
|
return; |
639
|
|
|
} |
640
|
|
|
|
641
|
|
|
// The language being requested is not the same as the language of the |
642
|
|
|
// logged in user, so we will have to load it separately. (Most likely |
643
|
|
|
// we're sending a notification and the recipient is using a different |
644
|
|
|
// language than the logged in user.) |
645
|
1005 |
|
$this->loadTranslations($language); |
646
|
|
|
} |
647
|
|
|
} |
648
|
|
|
|