မဝ်ဂျူ:niv-translit

---

local UTF8_char = "[\1-\127\194-\244][\128-\191]*"

local export = {}

local tab = {
	["А"]='A', ["а"]='a', ["В"]='V', ["в"]='v', ["Е"]='E', ["е"]='e',
	["Ё"]='Jo', ["ё"]='jo',	["Г"]='G', ["г"]='g', ["Ӷ"]='', ["ӷ"]='',
	["Ғ"]='Ꜧ', ["ғ"]='ꜧ', ["Ӻ"]='Ꜧ̇', ["ӻ"]='ꜧ̇', ["Д"]='D', ["д"]='d',
	["И"]='I', ["и"]='i', ["Й"]='J', ["й"]='j',
	["К"]='K', ["к"]='k', ["Ӄ"]='Q', ["ӄ"]='q', ["Л"]='L', ["л"]='l',
	["М"]='M', ["м"]='m', ["Н"]='N', ["н"]='n', ["Ӈ"]='Ŋ', ["ӈ"]='ŋ',
	["О"]='O', ["о"]='o', ["П"]='P', ["п"]='p', ["Р"]='R', ["р"]='r',
	["Р̌"]='Ř', ["р̌"]='ř', ["С"]='S', ["с"]='s', ["Т"]='T', ["т"]='t',
	["У"]='U', ["у"]='u', ["Ф"]='F', ["ф"]='f', ["Х"]='X', ["х"]='x',
	["Ӽ"]='Ẋ', ["ӽ"]='ẋ', ["Ӿ"]='H', ["ӿ"]='h', ["Ч"]='Ț’', ["ч"]='ț’',
	["Ы"]='Ə', ["ы"]='ə', ["Э"]='E', ["э"]='e', ["Ю"]='Ju', ["ю"]='ju',
	["Я"]='Ja', ["я"]='ja', ["’"]='ʼ', ["ʼ"]='ʼ',
	-- non-native letters
	["Б"]='B', ["б"]='b', ["Ж"]='ž', ["ж"]='ž',	["З"]='Z', ["з"]='z',
	 ["Ц"]='C', ["ц"]='c',  ["Ш"]='Š', ["ш"]='š',	["Щ"]='Šč', ["щ"]='šč',
	 ['Ъ']='ʺ', ['ъ']='ʺ', ["Ь"]="’", ["ь"]="’"
}

local palatal = {
	{ 'Дj', 'D̦' },
	{ 'дj', 'd̦' },
	{ 'Нj', 'Ņ' },
	{ 'нj', 'ņ' },
	{ 'Тj', 'Ț' },
	{ 'тj', 'ț' },
}

function export.tr(text, lang, sc)
	--[=[
	Unfortunately the Cyrillic alphabet doesn't distinguish between ţi and ti
	or ţe and te and so on.
	
	Represent iotation with j to allow the palatal consonant replacements.
	]=]
	text = string.gsub(text, UTF8_char,
		{
			['Я'] = 'Ja', ['я'] = 'ja',
			['Ё'] = 'Jo', ['ё'] = 'jo',
			['Ю'] = 'Ju', ['ю'] = 'ju',
			['ь'] = 'j'
		}
	)

	for _, item in ipairs(palatal) do
		text = string.gsub(text, unpack(item))
	end
	
	local vowels = {}
	for char in string.gmatch("АОУЫЕИЪЬаӣиоуыэеъьaeiou", UTF8_char) do
		vowels[char] = true
	end
 	text = mw.ustring.gsub(text,
 		"(.?)([Ее])",
 		function (preceding, e)
 			-- modifier letter apostrophe or right single quotation mark
 			local capital = e == "Е"
 			if preceding == "ʼ" or preceding == "’" then
 				e = capital and "E" or "e"
 			elseif preceding == "" or vowels[preceding] or mw.ustring.find(preceding, "[^Ѐ-ӿ]") then
 				e = capital and "Je" or "je"
 			else
 				mw.log("Module:niv-translit could not decide how to transliterate " .. e ..
 					" after " .. preceding .. ".")
 			end
 			return preceding .. e
 		end)
    
    return string.gsub(text, UTF8_char, tab)
end

return export