မေႃႇၵျူး:Brah-translit

This module will transliterate text in the Brahmi script. It is used to transliterate Helu, Ashokan Prakrit, Magadhi Prakrit, Prakrit, Paisaci Prakrit, Khotanese, Old Tamil, ပႃႇလိ, Ardhamagadhi Prakrit, Maharastri Prakrit, သေႃရသႄၼီး ပရၵ်ႉၶရိတ်ႉ, သၢၼ်းသၶရိတ်ႉ, and Tumshuqese.

The module should preferably not be called directly from templates or other modules. To use it from a template, use {{xlit}}. Within a module, use Module:languages#Language:transliterate.

For testcases, see Module:Brah-translit/testcases.

လၢႆးႁဵတ်းၵၢၼ်

tr(text, lang, sc)

Transliterates a given piece of text written in the script specified by the code sc, and language specified by the code lang. When the transliteration fails, returns nil.

---

local export = {}
local u = mw.ustring.char

local consonants = {
--consonants
	['𑀓']='k', ['𑀔']='kh', ['𑀕']='g', ['𑀖']='gh', ['𑀗']='ṅ',
	['𑀘']='c', ['𑀙']='ch', ['𑀚']='j', ['𑀛']='jh', ['𑀜']='ñ', 
	['𑀝']='ṭ', ['𑀞']='ṭh', ['𑀟']='ḍ', ['𑀠']='ḍh', ['𑀡']='ṇ', 
	['𑀢']='t', ['𑀣']='th', ['𑀤']='d', ['𑀥']='dh', ['𑀦']='n', 
	['𑀧']='p', ['𑀨']='ph', ['𑀩']='b', ['𑀪']='bh', ['𑀫']='m',
	['𑀬']='y', ['𑀭']='r', ['𑀮']='l', ['𑀯']='v', ['𑀴']='ḷ',
	['𑀰']='ś', ['𑀱']='ṣ', ['𑀲']='s', ['𑀳']='h',
-- Old Tamil
	[u(0x11075)] = 'ḷ',
	['𑀵']='ḻ', ['𑀶']='ṟ', ['𑀷'] ='ṉ',
}

local diacritics = {
--matras
	['𑀸']='ā', ['𑀺']='i', ['𑀻']='ī', ['𑀼']='u', ['𑀽']='ū', ['𑀾']='ṛ', ['𑀿']='ṝ', 
	['𑁀']='l̥', ['𑁁']='l̥̄', ['𑁂']='e', ['𑁃']='ai', ['𑁄']='o', ['𑁅']='au',  ['𑁆']='',

    --bhattiprolu aa
    ['𑀹']='ā',

     --Old Tamil
    ['𑁳']='ĕ', ['𑁴']='ŏ', [u(0x11070)]='',
    
    -- Old Tamil up to and including Unicode 13.0
    ['𑁂𑁆']='ĕ', ['𑁄𑁆']='ŏ', -- Two character vowels!
}

local diatrema = {
	['𑀇']='ï', ['𑀉']='ü',
}

local tt = {

--vowels
	['𑀅']='a', ['𑀆']='ā', ['𑀇']='i', ['𑀈']='ī', ['𑀉']='u', ['𑀊']='ū', ['𑀋']='ṛ', ['𑀌']='ṝ',
	['𑀍']='l̥', ['𑀎']='l̥̄', ['𑀏']='e', ['𑀐']='ai', ['𑀑']='o', ['𑀒']='au', 
    ['𑁱']='ĕ', ['𑁲']='ŏ', --Old Tamil

	-- chandrabindu    
	['𑀀']='m̐', --until a better method is found
	-- anusvara    
	['𑀁']='ṃ', --until a better method is found
	-- visarga    
	['𑀂']='ḥ',
	--numerals
	['𑁦']='0', ['𑁧']='1', ['𑁨']='2', ['𑁩']='3', ['𑁪']='4', ['𑁫']='5', ['𑁬']='6', ['𑁭']='7', ['𑁮']='8', ['𑁯']='9',
	--punctuation        
	['𑁇']='.', --danda
    ['𑁈']='.' --double danda
}

function export.tr(text, lang, sc)
	if sc ~= "Brah" then
		return nil
	end

	if lang == "inc-pra" then -- Route contextually shortened Prakrit vowels through Old Tamil short vowels
		text = mw.ustring.gsub(text, '(𑁂)([𑀅-𑀳]?)(𑁆)([𑀅-𑀳]?)', '𑁳%2%3%4')
		text = mw.ustring.gsub(text, '(𑀏)([𑀅-𑀳]?)(𑁆)([𑀅-𑀳]?)', '𑁱%2%3%4')
		text = mw.ustring.gsub(text, '(𑁄)([𑀅-𑀳]?)(𑁆)([𑀅-𑀳]?)', '𑁴%2%3%4')
		text = mw.ustring.gsub(text, '(𑀑)([𑀅-𑀳]?)(𑁆)([𑀅-𑀳]?)', '𑁲%2%3%4')
	end

	text = mw.ustring.gsub(
		text,
		'([𑀓-𑀷'..u(0x11075)..'])'..
		'([𑀸𑀺𑀺𑀻𑀼𑀽𑀾𑀿𑁀𑁁𑁂𑁃𑁄𑁅𑁆𑀹𑁳𑁴'..u(0x11070)..']?𑁆?)'..
		'([𑀇𑀉]?)',
		function(c, d, e)
			if d == "" and e ~= "" then
				return consonants[c] .. 'a' .. diatrema[e]
			elseif e ~= "" then
				return consonants[c] .. diacritics[d] .. tt[e]
			elseif d == "" then        
				return consonants[c] .. 'a'
			else
				return consonants[c] .. diacritics[d]
			end
		end)

-- Adjacent vowel letters needing dieresis
	text = mw.ustring.gsub(text, '([𑀅])([𑀇𑀉])', function(a, b) return tt[a]..diatrema[b] end)

	text = mw.ustring.gsub(text, '.', tt)
	if (lang == 'sa' or lang == 'pi') and mw.ustring.match(text, 'l̥') then
		text = mw.ustring.gsub(text, 'l̥', 'ḷ')
		text = mw.ustring.toNFC(text)
	end
-- Old Tamil uses macron v. plain for 'e' and 'o'.
	if (lang == 'oty') then
		text = mw.ustring.gsub(text, '.', {e='ē', o='ō', ['ĕ']='e', ['ŏ']='o'})
	end

	return text
end
 
return export