Module:Grc-translit

local export = {}

local m_data = require('Module:grc-utilities/data') local tokenize = require('Module:grc-utilities').tokenize

local ufind = mw.ustring.find local ugsub = mw.ustring.gsub local U = mw.ustring.char local ulower = mw.ustring.lower local uupper = mw.ustring.upper

local UTF8char = '[%z\1-\127\194-\244][\128-\191]*'

-- Diacritics local diacritics = m_data.named

-- Greek local acute = diacritics.acute local grave = diacritics.grave local circumflex = diacritics.circum local diaeresis = diacritics.diaeresis local smooth = diacritics.smooth local rough = diacritics.rough local macron = diacritics.macron local breve = diacritics.breve local subscript = diacritics.subscript

-- Latin local hat = diacritics.Latin_circum

local macron_diaeresis = macron .. diaeresis .. "?" .. hat local a_subscript = '^[αΑ].*' .. subscript .. '$' local velar = 'κγχξ'

local tt = { -- Vowels ["α"] = "a", ["ε"] = "e", ["η"] = "e" .. macron, ["ι"] = "i", ["ο"] = "o", ["υ"] = "u", ["ω"] = "o" .. macron,

-- Consonants ["β"] = "b", ["γ"] = "g", ["δ"] = "d", ["ζ"] = "z", ["θ"] = "th", ["κ"] = "k", ["λ"] = "l", ["μ"] = "m", ["ν"] = "n", ["ξ"] = "x", ["π"] = "p", ["ρ"] = "r", ["σ"] = "s", ["ς"] = "s", ["τ"] = "t", ["φ"] = "ph", ["χ"] = "kh", ["ψ"] = "ps", -- Archaic letters ["ϝ"] = "w", ["ϻ"] = "ś", ["ϙ"] = "q", ["ϡ"] = "š", ["ͷ"] = "v", -- Incorrect characters: see About Ancient Greek. -- These are tracked by Module:script utilities. ["ϐ"] = "b", ["ϑ"] = "th", ["ϰ"] = "k", ["ϱ"] = "r", ["ϲ"] = "s", ["ϕ"] = "ph", -- Diacritics -- unchanged: macron, diaeresis, grave, acute [breve] = '', [smooth] = '', [rough] = '', [circumflex] = hat, [subscript] = 'i', }

function export.tr(text, lang, sc) if text == '῾' then return 'h'	end --		Replace semicolon or Greek question mark with regular question mark,		except after an ASCII alphanumeric character (to avoid converting		semicolons in HTML entities). text = ugsub(text, "([^A-Za-z0-9])[;" .. U(0x37E) .. "]", "%1?") -- Handle the middle dot. It is equivalent to semicolon or colon, but semicolon is probably more common. text = text:gsub("·", ";") local tokens = tokenize(text)

--now read the tokens local output = {} for i, token in pairs(tokens) do		-- Convert token to lowercase and substitute each character -- for its transliteration local translit = ulower(token):gsub(UTF8char, tt) local next_token = tokens[i + 1] if token == 'γ' and next_token and velar:find(next_token, 1, true) then -- γ before a velar should be  translit = 'n'		elseif token == 'ρ' and tokens[i - 1] == 'ρ' then -- ρ after ρ should be  translit = 'rh' elseif ufind(token, a_subscript) then -- add macron to ᾳ translit = ugsub(translit, '([aA])', '%1' .. macron) end if token:find(rough) then if ufind(token, '^[Ρρ]') then translit = translit .. 'h'			else -- vowel translit = 'h' .. translit end end -- Remove macron from a vowel that has a circumflex. if ufind(translit, macron_diaeresis) then translit = translit:gsub(macron, '') end -- Capitalize first character of transliteration. if token ~= ulower(token) then translit = translit:gsub("^" .. UTF8char, uupper) end table.insert(output, translit) end output = table.concat(output) return output end

return export