Translation::getDefaultTranslationEncoding

static function getDefaultTranslationEncoding($lang)
{
	static $sourceEncoding = [
		'ru' => 'windows-1251',
		'en' => 'iso-8859-1',
		'de' => 'iso-8859-15',
	];
	if (isset($sourceEncoding[$lang]))
	{
		return $sourceEncoding[$lang];
	}

	return 'utf-8';
}