[WPML] Category base translation

Hi ??

I’m using WPML and everything is going fine. But I’m looking to give a specific category base for each language :

Fr : site.com/rubrique/sport
En : site.com/en/section/sport
…

I made a specific plugin able to generate links like that.

function cat_prefix(){
	global $sitepress;
$lang = $sitepress->get_current_language();
switch($lang) {
	case 'ar':
		$pref = 'ركن';
		break;
	case 'fr':
		$pref = 'rubrique';
		break;
	case 'en';
		$pref = 'section';
		break;
	default:
		$pref = 'rubrique';
}
	return $pref;
}

add_filter('option_category_base', 'cat_prefix');

I don’t like to touch rewrite.php file or any WordPress Core files.
So how can I add my own rewrite rules to do that ?

Thank you ??