မဝ်ဂျူ:sa-Beng-translit

Documentation for this module may be created at မဝ်ဂျူ:sa-Beng-translit/doc

local export = {}

local consonants = {
	['ক']='k', ['খ']='kh', ['গ']='g', ['ঘ']='gh', ['ঙ']='ṅ',
	['চ']='c', ['ছ']='ch', ['জ']='j', ['ঝ']='jh', ['ঞ']='ñ', 
	['ট']='ṭ', ['ঠ']='ṭh', ['ড']='ḍ', ['ঢ']='ḍh', ['ণ']='ṇ', 
	['ত']='t', ['থ']='th', ['দ']='d', ['ধ']='dh', ['ন']='n', 
	['প']='p', ['ফ']='ph', ['ব']='b', ['ভ']='bh', ['ম']='m',
	['য']='y', ['য়']='y', ['ৰ']='r', ['র']='r', ['ল']='l', ['ল়']='ḷ', ['ৱ']='v',
	['শ']='ś', ['ষ']='ṣ', ['স']='s', ['হ']='ḣ', ['য়']='ẏ',
}

local diacritics = {
	['া']='ā', ['ি']='i', ['ী']='ī', ['ু']='u', ['ূ']='ū', ['ৃ']='ṛ', ['ৄ']='ṝ', 
	['ৢ']='ḷ', ['ৣ']='ḹ', ['ে']='e', ['ৈ']='ai', ['ো']='o', ['ৌ']='au',  ['্']='',
}

local tt = {
	-- vowels
	['অ']='a', ['আ']='ā', ['ই']='i', ['ঈ']='ī', ['উ']='u', ['ঊ']='ū', ['ঋ']='ṛ', ['ৠ']='ṝ',
	['ঌ']='ḷ', ['ৡ']='ḹ', ['এ']='e', ['ঐ']='aì', ['ও']='o', ['ঔ']='aù', 
	-- chandrabindu    
	['ঁ']='m̐', --until a better method is found
	-- anusvara    
	['ং']='ṃ', --until a better method is found
	-- visarga    
	['ঃ']='ḥ',
	--     
	['ৎ']='t',
	-- avagraha
	['ঽ']='’',
	--numerals
	['૦']='০', ['૧']='১', ['૨']='২', ['૩']='৩', ['૪']='৪', ['૫']='৫', ['૬']='৬', ['૭']='৭', ['૮']='৮', ['૯']='৯',
	--punctuation        
    ['॥']='.', --double danda
	['।']='.', --danda
    --Vedic extensions
    -- ['ᳵ']='x', ['ᳶ']='f',
    --Om
    ['ওঁ']='oṃ',
    --reconstructed
    ['*'] = '',
}

function export.tr(text, lang, sc)

	text = string.gsub(text, '্ব', '্ৱ')

	text = mw.ustring.gsub(
		text,
		'([কখগঘঙচছজঝঞটঠডঢণতথদধনপফবভমযৰরলৱশষসহv]়?)'.. -- য় and ল় are composition exclusions!
		'([ািীুূৃৄৢৣেৈোৌ্]?)',
		function(c, d)
			if d == "" then        
				return consonants[c] .. 'a'
			else
				return consonants[c] .. diacritics[d]
			end
		end)

	text = mw.ustring.gsub(text, '.', tt)

	text = string.gsub(text, "([dgḣmr])v", "%1b")
	text = string.gsub(text, "ḣ", "h")
	text = string.gsub(text, "ai", "aï")
	text = string.gsub(text, "au", "aü")
	text = string.gsub(text, "aì", "ai")
	text = string.gsub(text, "aù", "au")
	
	return text
end
 
return export