-- This module is for 陽江話 (Yangjiang Yue/Cantonese), a lect of Yue Chinese
-- Romanisation: Jyutping++ (referred to as jpp below)
-- References:
-- 1. 广东阳江话研究 (2016) by 冼文婷
-- Also see [[Category:Yangjiang Yue]]
local export = {}
local initials = {
b = "p", p = "pʰ", m = "m", f = "f",
d = "t", t = "tʰ", n = "n", sl = "ɬ", l = "l",
z = "t͡ʃ", c = "t͡ʃʰ", s = "ʃ",
g = "k", k = "kʰ", ng = "ŋ", h = "h",
j = "j", w = "w",
[""] = "", -- glottal stop?
}
-- Note: "e" and "ie" are not allophones; they are just placed in the same row for convenience
local finals = {
aa="a",aai="ai",aau="au",aam="am",aan="an",aang="aŋ",aap="ap̚",aat="at̚",aak="ak̚",
ai="ɐi", au="ɐu", am="ɐm", an="ɐn", ang="ɐŋ", ap="ɐp̚", at="ɐt̚", ak="ɐk̚",
e="ɛ",ei="ei",ieu="iɛu",iem="iɛm",ien="iɛn",ieng="iɛŋ",iep="iɛp̚",iet="iɛt̚",iek="iɛk̚",
o="ɔ", oi="ɔi", ou="ou", on="ɔn", ong="ɔŋ", ot="ɔt̚", ok="ɔk̚",
i="i", iu="iu",im="im",["in"]="in",ing="ɪŋ", ip="ip̚", it="it̚", ik="ɪk̚",
u="u", ui="ui", un="un", ung="ʊŋ", ut="ut̚", uk="ʊk̚",
}
-- "5" merges into "2"
local tones = {
["1"] = "³³", --陰平
["2"] = "²¹", --上 /下陰入
["3"] = "²⁴", --陰去/上陰入
["4"] = "⁴²", --陽平/下陽入
["6"] = "⁵⁵", --陽去/上陽入
}
local function validate(text)
text = text:gsub(","," ")
if text:sub(1,1) == " " or text:sub(-1,-1) == " " or text:match(" ") then
error("Yangjiang: Empty syllable detected.")
end
end
function export.jpp_to_ipa(text)
validate(text)
text = text:gsub("[^ ,]+",function(syllable)
local a,b,c = syllable:match("^([bpmfdtnlzcsgknhjw]?[lg]?)([aeiou]%l*)([12346])$")
if not a then
error("Yangjiang: Invalid syllable: " .. syllable)
end
return (initials[a] or error("Yangjiang: Unrecognised initial: " .. a))
.. (finals[b] or error("Yangjiang: Unrecognised final: " .. b))
.. tones[c]
end)
:gsub(",", "/, /")
return "/" .. text .. "/"
end
return export