Module:syllables

local export = {}

local m_str_utils = require("Module:string utilities")

local gsub = m_str_utils.gsub local match = m_str_utils.match local toNFD = mw.ustring.toNFD local U = m_str_utils.char

local diphthongs = mw.loadData("Module:IPA/data").diphthongs local vowels = mw.loadData("Module:IPA/data/symbols").vowels .. "ᵻ" .. "ᵿ"

-- No use for this at the moment, though it is an interesting catalogue.	It might be usable for phonetic transcriptions.	Diacritics added to vowels:	inverted breve above, inverted breve below,	up tack, down tack,	left tack, right tack,	diaeresis (above), diaeresis below,	right half ring, left half ring,	plus sign below, minus sign below,	combining x above, rhotic hook,	tilde (above), tilde below	ligature tie (combining double breve), ligature tie below local diacritics = U(	0x311, 0x32F,	0x31D, 0x31E,	0x318, 0x319,	0x308, 0x324,	0x339, 0x31C,	0x31F, 0x320,	0x33D, 0x2DE,	0x303, 0x330,	0x361, 0x35C )

-- combining acute and grave tone marks, circumflex -- local tone = "[" .. U(0x341, 0x340, 0x302) .. "]" local nonsyllabicDiacritics = U(0x311, 0x32F) local syllabicDiacritics = U(0x0329, 0x030D) local ties = U(0x361, 0x35C)

-- long, half-long, extra short local lengthDiacritics = U(0x2D0, 0x2D1, 0x306) local vowel = "[" .. vowels .. "]" .. tone .. "?" local tie = "[" .. ties .. "]" local nonsyllabicDiacritic = "[" .. nonsyllabicDiacritics .. "]" local syllabicDiacritic = "[" .. syllabicDiacritics .. "]"

local UTF8Char = "[\1-\127\194-\244][\128-\191]*"

function export.getVowels(remainder, lang) if string.find(remainder, "^[%[/]?%-") or string.find(remainder, "%-[%[/]?$") then return nil end	-- If a hyphen is at the beginning or end of the transcription, do not count syllables. local count = 0 local diphs = diphthongs[lang:getCode] or {} remainder = toNFD(remainder) remainder = string.gsub(remainder, "%((.*)%)", "%1") -- Remove parentheses.

while remainder ~= "" do		-- Ignore nonsyllabic vowels remainder = gsub(remainder, "^" .. vowel .. nonsyllabicDiacritic, "") local m = match(remainder, "^." .. syllabicDiacritic) or -- Syllabic consonant match(remainder, "^" .. vowel .. tie .. vowel) -- Tie bar -- Starts with a recognised diphthong? for _, diph in ipairs(diphs) do			if m then break end m = m or match(remainder, "^" .. diph) end -- If we haven't found anything yet, just match on a single vowel m = m or match(remainder, "^" .. vowel) if m then -- Found a vowel, add it			count = count + 1 remainder = string.sub(remainder, #m + 1) else -- Found a non-vowel, skip it remainder = string.gsub(remainder, "^" .. UTF8Char, "") end end if count ~= 0 then return count end return nil end

function export.countVowels2Test(frame) local params = { [1] = {required = true}, [2] = {default = ""}, }	local args = require("Module:parameters").process(frame.args, params) local lang = require("Module:languages").getByCode(args[1]) or require("Module:languages").err(args[1], 1) local count = export.getVowels(args[2], lang) return 'The text "' .. args[2] .. '" contains ' .. count .. ' vowels.' end

local function countVowels(text) text = toNFD(text) or error("Invalid UTF-8") local _, count = gsub(text, vowel, "") local _, sequenceCount = gsub(text, vowel.."+", "") local _, nonsyllabicCount = gsub(text, vowel .. nonsyllabicDiacritic, "") local _, tieCount = gsub(text, vowel .. tie .. vowel, "") local diphthongCount = count - (nonsyllabicCount + tieCount) return count, sequenceCount, diphthongCount end

local function countDiphthongs(text, lang) text = toNFD(text) or error("Invalid UTF-8") local diphthongs = diphthongs[lang:getCode] or {} local _, count local total = 0 if diphthongs then for i, diphthong in pairs(diphthongs) do			_, count = gsub(text, diphthong, "") total = total + count end end return total end

function export.countVowels(frame) local params = { [1] = {default = ""}, }	local args = require("Module:parameters").process(frame.args, params) local count, sequenceCount, diphthongCount = countVowels(args[1]) local outputs = {} table.insert(outputs, (count or 'an unknown number of') .. ' vowels') table.insert(outputs, (sequenceCount or 'an unknown number of') .. ' vowel sequences') table.insert(outputs, (diphthongCount or 'an unknown number of') .. ' vowels or vowels and diphthongs') return 'The text "' .. args[1] .. '" contains ' .. mw.text.listToText(outputs) .. "." end

function export.countVowelsDiphthongs(frame) local params = { [1] = {required = true}, [2] = {default = ""}, }	local args = require("Module:parameters").process(frame.args, params) local lang = require("Module:languages").getByCode(args[1]) or require("Module:languages").err(args[1], 1) local vowels = countVowels(args[2]) local count = vowels - countDiphthongs(args[2], lang) or 0 local out = 'The text "' .. args[2] .. '" contains ' .. (count or 'an unknown number of') if count == 1 then out = out .. ' vowel or diphthong.' else out = out .. ' vowels or diphthongs.' end return out end

return export