pfSense

		"tr" => gettext("Turkish"),

function system_get_language_code() {

	global $config, $g_languages;

	// a language code, as per [RFC3066]

	$language = $config['system']['language'];

	//$code = $g_languages[$language]['code'];

	$code = str_replace("_", "-", $language);

	if (empty($code))

		$code = "en-US"; // Set default code.

	return $code;

}

function system_get_language_codeset() {

	global $config, $g_languages;

	$language = $config['system']['language'];

	$codeset = $g_languages[$language]['codeset'];

	if (empty($codeset))

		$codeset = "UTF-8"; // Set default codeset.

	return $codeset;

}

/* Available languages/locales */

$g_languages = array (

	"sq"    => array("codeset" => "UTF-8", "desc" => gettext("Albanian")),

	"bg"    => array("codeset" => "UTF-8", "desc" => gettext("Bulgarian")),

	"zh_CN" => array("codeset" => "UTF-8", "desc" => gettext("Chinese (Simplified)")),

	"zh_TW" => array("codeset" => "UTF-8", "desc" => gettext("Chinese (Traditional)")),

	"nl"    => array("codeset" => "UTF-8", "desc" => gettext("Dutch")),

	"da"    => array("codeset" => "UTF-8", "desc" => gettext("Danish")),

	"en_US" => array("codeset" => "ISO-8859-1", "desc" => gettext("English")),

	"fi"    => array("codeset" => "UTF-8", "desc" => gettext("Finnish")),

	"fr"    => array("codeset" => "UTF-8", "desc" => gettext("French")),

	"de"    => array("codeset" => "UTF-8", "desc" => gettext("German")),

	"el"    => array("codeset" => "UTF-8", "desc" => gettext("Greek")),

	"hu"    => array("codeset" => "UTF-8", "desc" => gettext("Hungarian")),

	"it"    => array("codeset" => "UTF-8", "desc" => gettext("Italian")),

	"ja"    => array("codeset" => "UTF-8", "desc" => gettext("Japanese")),

	"ko"    => array("codeset" => "UTF-8", "desc" => gettext("Korean")),

	"lv"    => array("codeset" => "UTF-8", "desc" => gettext("Latvian")),

	"nb"    => array("codeset" => "UTF-8", "desc" => gettext("Norwegian (Bokmal)")),

	"pl"    => array("codeset" => "UTF-8", "desc" => gettext("Polish")),

	"pt_BR" => array("codeset" => "ISO-8859-1", "desc" => gettext("Portuguese (Brazil)")),

	"pt"    => array("codeset" => "UTF-8", "desc" => gettext("Portuguese (Portugal)")),

	"ro"    => array("codeset" => "UTF-8", "desc" => gettext("Romanian")),

	"ru"    => array("codeset" => "UTF-8", "desc" => gettext("Russian")),

	"sl"    => array("codeset" => "UTF-8", "desc" => gettext("Slovenian")),

	"tr"    => array("codeset" => "UTF-8", "desc" => gettext("Turkish")),

	"es"    => array("codeset" => "UTF-8", "desc" => gettext("Spanish")),

	"sv"    => array("codeset" => "UTF-8", "desc" => gettext("Swedish")),

	"sk"    => array("codeset" => "UTF-8", "desc" => gettext("Slovak")),

	"cs"    => array("codeset" => "UTF-8", "desc" => gettext("Czech"))

);