模組:Nd-common

---

此模块缺少說明文檔。請協助創建。

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local export = {}

local u = mw.ustring.char

local ACUTE     = u(0x0301)
local CIRC      = u(0x0302)
local SYLL      = u(0x0324)

export.diacritic = ACUTE .. CIRC
export.toneless_vowel = "aeiouAEIOU" .. SYLL
export.vowel = export.toneless_vowel .. "áéíóúḿâêîôûÁÉÍÓÚḾÂÊÎÔÛ" .. export.diacritic

function export.split_syllables(word)
	local syllables = {}
	
	for syll in mw.ustring.gmatch(word, "[^" .. export.vowel .. "]*[" .. export.vowel .. "]+") do
		table.insert(syllables, syll)
	end
	
	syllables[#syllables] = syllables[#syllables] .. mw.ustring.match(word, "[^" .. export.vowel .. "]*$")
	
	return syllables
end


function export.apply_tone(word, pattern)
	word = export.split_syllables(word)
	pattern = mw.text.split(pattern or mw.ustring.rep("L", #word), "")
	
	if #word ~= #pattern then
		error("The word \"" .. table.concat(word) .. "\" and the tone pattern " .. table.concat(pattern) .. " have different numbers of syllables.")
	end

	for i, tone in ipairs(pattern) do
		if tone == "F" then
			word[i] = mw.ustring.gsub(word[i], "([" .. export.toneless_vowel .. "])", "%1" .. CIRC)
		elseif tone == "H" then
			word[i] = mw.ustring.gsub(word[i], "([" .. export.toneless_vowel .. "])", "%1" .. ACUTE)
		elseif tone ~= "L" then
			error("Invalid character \"" .. tone .. "\" in tone pattern string.")
		end
	end
	
	return (mw.ustring.gsub(mw.ustring.toNFC(table.concat(word)), "̩", ""))
end


return export