မဝ်ဂျူ:be-translit

Documentation for this module may be created at မဝ်ဂျူ:be-translit/doc

local export = {}

local AC = mw.ustring.char(0x0301) -- acute =  ́

local rsubn = mw.ustring.gsub

-- version of rsubn() that discards all but the first return value
local function rsub(term, foo, bar)
	local retval = rsubn(term, foo, bar)
	return retval
end

local tt = {
	["А"]='A', ["а"]='a', ["Б"]='B', ["б"]='b', ["В"]='V', ["в"]='v', ["Г"]='H', ["г"]='h', ["Д"]='D', ["д"]='d', 
	["Е"]='Je', ["е"]='je', ["Ё"]='Jo', ["ё"]='jo', ["Ж"]='Ž', ["ж"]='ž', ["З"]='Z', ["з"]='z', ["І"]='I', ["і"]='i', 
	["И"]='I', ["и"]='i', -- present for Old Belarusian; FIXME, remove when we have a separate language code for this lang
	["Й"]='J', ["й"]='j', ["К"]='K', ["к"]='k', ["Л"]='L', ["л"]='l', ["М"]='M', ["м"]='m', ["Н"]='N', ["н"]='n', 
	["О"]='O', ["о"]='o', ["П"]='P', ["п"]='p', ["Р"]='R', ["р"]='r', ["С"]='S', ["с"]='s', ["Т"]='T', ["т"]='t', 
	["У"]='U', ["у"]='u', ["Ў"]='Ŭ', ["ў"]='ŭ', ["Ф"]='F', ["ф"]='f', ["Х"]='X', ["х"]='x', ["Ц"]='C', ["ц"]='c', 
	["Ч"]='Č', ["ч"]='č', ["Ш"]='Š', ["ш"]='š', ["Ы"]='Y', ["ы"]='y', ["Ь"]='ʹ', ["ь"]='ʹ', ["Э"]='E', ["э"]='e', 
	["Ю"]='Ju', ["ю"]='ju', ["Я"]='Ja', ["я"]='ja', 
	["’"]='ʺ', ["ʼ"]='ʺ',
	-- currently non-standard, used in some older norms
	["Ґ"]='G', ["ґ"]='g',
	-- Belarusian style quotes
	['«']='“', ['»']='”',
};

local unstressed_vowels = "aeiyuAEIYU"
local unstressed_vowel = "[" .. unstressed_vowels .. "]"

local acute_decomposer = {
	["á"] = "a" .. AC,
	["é"] = "e" .. AC,
	["í"] = "i" .. AC,
	["ó"] = "o" .. AC,
	["ú"] = "u" .. AC,
	["ý"] = "y" .. AC,
	["Á"] = "A" .. AC,
	["É"] = "E" .. AC,
	["Í"] = "I" .. AC,
	["Ó"] = "O" .. AC,
	["Ú"] = "U" .. AC,
	["Ý"] = "Y" .. AC,
}

function export.tr(text, lang, sc)
    text = mw.ustring.gsub(text, "'+", { ["'"] = 'ʺ' }) -- neutral apostrophe
    text = mw.ustring.gsub(text, '.', tt)

	-- Mark word boundaries
	text = mw.ustring.gsub(text, "(%s+)", "#%1#")
	text = "#" .. text .. "#"

	-- Mark stress on <o>
	text = mw.ustring.gsub(text, "(#[^#Oo" .. AC .. "]*)([Oo])([^#Oo" .. AC .. "]*" .. unstressed_vowel .. "[^#Oo" .. AC .. "]*#)", "%1%2" .. AC .. "%3")
	text = mw.ustring.gsub(text, "(#[^#Oo" .. AC .. "]*" .. unstressed_vowel .. "[^#Oo" .. AC .. "]*)([Oo])([^#Oo" .. AC .. "]*#)", "%1%2" .. AC .. "%3")

	--Strip hashes
	text = mw.ustring.gsub(text, "#", "")

    return text
end

function export.reverse_tr(text)--reverse-translit any words or phrases
	local reverse_tt = {}
	for k, v in pairs(tt) do
		reverse_tt[v] = k
	end
	reverse_tt['ʺ'] = "'"
	reverse_tt['ʹ'] = "ь"
	reverse_tt['i'] = "і"
	reverse_tt['I'] = "І"
	text = rsub(text, '.', acute_decomposer)
	text = rsub(text, '[Jj][aeou]', reverse_tt)
	text = rsub(text, '.', reverse_tt)
	return text
end

return export