Убрать префикс языка многоязычного сайта для компонента - Joomla 3.x: Общие вопросы

/*
			 * 1 - We don't know what the language filter may or may not have done
			 * with the path. It may already have returned a lang var to the router
			 * but we don't know that either
			 *
			 * Actually we do: if a language was detected, $app->input->get('language')
			 * will have the language code (ie en-GB)
			 * If that is set, the path has been truncated, ie the leading en/ code
			 * has been removed (and no query var set to compensate!)
			 *
			 * 2 - What we can do: compare the original url with the path
			 * in $uri. If we do have a language in the original but not
			 * in the incoming $uri, then language filter already has done lang
			 * detection and removed that from the path (including when there's no
			 * language code at all: that's default language)
			 * Then we can:
			 * - figure out what the language is and stick it back in $uri
			 * - parse through sh404SEF
			 * - remove the leading lang code we put in $uri
			 * - unset any 'lang' we may have calculated ourselves so as
			 * not to override what the languge filter has done
			 * EDIT: to still be able to switch back to default language (when no lang code is used
			 * on default language, we must use trick (ie set a cookie)
			 *
			 */
			$appLang     = $app->input->get('language', '');
			$sefLangCode = '';
			if (!empty($appLang))
			{
				$languages   = JLanguageHelper::getLanguages('lang_code');
				$sefLangCode = empty($languages[$appLang])? '' : $languages[$appLang]->sef;
			}

			$currentPath = '';
			if (!empty($sefLangCode) && $originalPath != 'index.php'
				&& (
					$appLang != Sh404sefHelperLanguage::getDefaultLanguageTag()
					||
					(
						$appLang == Sh404sefHelperLanguage::getDefaultLanguageTag()
						&& Sh404sefHelperLanguage::getInsertLangCodeInDefaultLanguage()
						&& (!empty($originalPath))
					)
				)
			)
			{
				// stick back the path in the url
				$currentPath = $uri->getPath();
				$uri->setPath($sefLangCode . '/' . (empty($currentPath)? '' : $currentPath));
				$this->_guessedLanguageCode = $sefLangCode;
			}