মডিউল:sa-utilities/translit/IAST-to-SLP1

এই মডিউলের জন্য মডিউল:sa-utilities/translit/IAST-to-SLP1/নথি-এ নথিপত্র তৈরি করা হয়ে থাকতে পারে

local export = {}

local U = mw.ustring.char

local acute = U(0x301) -- combining acute
local grave = U(0x300) -- combining grave

local composed_accents = {
	['á'] = 'a/', ['à'] = 'a\\',
	['í'] = 'i/', ['ì'] = 'i\\',
	['ú'] = 'u/', ['ù'] = 'u\\',
	['é'] = 'e/', ['è'] = 'e\\',
	['ó'] = 'o/', ['ò'] = 'o\\',
	[acute] = '/', [grave] = '\\',
}

local normalize_accents = {
	['á'] = '/', ['à'] = '\\',
}

local function change_accent(text)
	-- normalize accent placement
	text = mw.ustring.gsub(text, '([áà])([iu])', function(a, iu) return "a" .. iu .. normalize_accents[a] end)
	text = mw.ustring.gsub(text, '.', composed_accents)
	return text
end

local function detect_lateral_flap(text)
	-- an "ḷ" initially before a non-vowel or between two non-vowels vowel is assumed to be "x"
	text =  mw.ustring.gsub(text, "^ḷ([^aāiīuūeoṛṝḷḹ])", "x%1")
	text =  mw.ustring.gsub(text, "([^aāiīuūeoṛṝḷḹ])ḷ([^aāiīuūeoṛṝḷḹ])", "%1x%2")
	-- all others are assumed to be "L"
	text =  mw.ustring.gsub(text, "ḷ", "L")
	return text
end

local tt = {
	[1] = {
		--consonants
		["kh"] = "K", ["gh"] = "G",
		["ch"] = "C", ["jh"] = "J",
		["ṭh"] = "W", ["ḍh"] = "Q",
		["th"] = "T", ["dh"] = "D",
		["ph"] = "P", ["bh"] = "B",
	},
	[2] = {
		-- vowels
		["ai"] = "E",
		["au"] = "O",
	},
	[3] = {
		-- chandrabindu
		['m̐'] = '~'
	},
	[4] = {
		
		--consonants
		["ṅ"] = "N",
		["ñ"] = "Y",
		["ṭ"] = "w", ["ḍ"] = "q", ["ṇ"] = "R",
		["ś"] = "S", ["ṣ"] = "z",				-- ["ḷ"] = "L"
		
		--vowels
		["ā"] = "A",
		["ī"] = "I",
		["ū"] = "U",
		["ṛ"] = "f", ["ṝ"] = "F",
		["ḹ"] = "X",								-- ["ḷ"] = "x",
		
		-- avagraha
		["’"] = "",
		
		--other
		["ṃ"] = "M",
		["ḥ"] = "H",
		["x"] = "Z",
		["f"] = "V",
	},
}

function export.tr(text, lang, sc)
	text = mw.ustring.toNFC(text)
	text = change_accent(text)
	text = detect_lateral_flap(text)
	text = mw.ustring.gsub(text, '[kgcjṭḍtdpb]h', tt[1])
	text = mw.ustring.gsub(text, 'a[iu]', tt[2])
	text = mw.ustring.gsub(text, 'm̐', tt[3])
	text = mw.ustring.gsub(text, '.', tt[4])
	return text
end

return export