typedef struct {
	const char *full_name;
	const char *abbr; // 全部使用小写
} LayoutMapping;

static const LayoutMapping layout_mappings[] = {
	{"English (US)", "us"},
	{"English (UK)", "uk"},
	{"Russian", "ru"},
	{"German", "de"},
	{"French", "fr"},
	{"Spanish", "es"},
	{"Italian", "it"},
	{"Japanese", "jp"},
	{"Chinese", "cn"},
	{"Korean", "kr"},
	{"Arabic", "ar"},
	{"Hebrew", "il"},
	{"Greek", "gr"},
	{"Turkish", "tr"},
	{"Portuguese", "pt"},
	{"Portuguese (Brazil)", "br"},
	{"Swedish", "se"},
	{"Norwegian", "no"},
	{"Danish", "dk"},
	{"Finnish", "fi"},
	{"Polish", "pl"},
	{"Czech", "cz"},
	{"Hungarian", "hu"},
	{"Ukrainian", "ua"},
	{"Belarusian", "by"},
	{"Bulgarian", "bg"},
	{"Croatian", "hr"},
	{"Romanian", "ro"},
	{"Serbian", "rs"},
	{"Slovak", "sk"},
	{"Slovenian", "si"},
	{"Estonian", "ee"},
	{"Latvian", "lv"},
	{"Lithuanian", "lt"},
	{"Dutch", "nl"},
	{"Flemish", "be"},
	{"Swiss German", "ch"},
	{"French (Canada)", "ca"},
	{"French (Switzerland)", "ch-fr"},
	{"Icelandic", "is"},
	{"Maltese", "mt"},
	{"Irish", "ie"},
	{"Albanian", "al"},
	{"Macedonian", "mk"},
	{"Bosnian", "ba"},
	{"Montenegrin", "me"},
	{"Dvorak", "dv"},
	{"Colemak", "cm"},
	{"Workman", "wm"},
	{"Norman", "nm"},
	{"QGMLWY", "qg"},
	{"AZERTY", "az"},
	{"QWERTZ", "qz"},
	{"BÉPO (French ergonomic)", "bepo"},
	{"Neo", "neo"},
	{"Turkish F", "trf"},
	{"Tibetan", "bo"},
	{"Thai", "th"},
	{"Vietnamese", "vn"},
	{"Lao", "la"},
	{"Khmer", "kh"},
	{"Hindi", "in"},
	{"Persian", "ir"},
	{"Urdu", "pk"},
	{"Bangla", "bd"},
	{"Sinhala", "lk"},
	{"Nepali", "np"},
	{"Tamil", "ta"},
	{"Telugu", "te"},
	{"Kannada", "kn"},
	{"Malayalam", "ml"},
	{NULL, NULL} // 结束标记
};