Module:brx-translit

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The following documentation is generated by Module:documentation/functions/translit.
Useful links: subpage list • links • transclusions • testcases • sandbox

This module will transliterate Bodo (India) language text. 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:brx-translit/testcases.

Functions

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 gsub = mw.ustring.gsub
local match = mw.ustring.match

local conv = {
	-- consonants
	 = 'k',  = 'g',  = 'ŋ', 
	 = 'z',  = 't',  = 'd',  = 'n',  = 'f',  = 'b',  = 'm', 
	 = 'y',  = 'r',  = 'l',  = 'o',  = 's',  = 'h',

	-- vowel diacritics
	 = 'i',  = 'u',  = 'e',  = 'w',
     = 'a',  = 'wi',  = 'wu',  = 'o',

	-- vowel signs
	 = 'o',  = 'i',  = 'u',  = 'e',  = 'w',
	 = 'a',  = 'wi',  = 'wu',  = 'o',
	
	 = 'om',
	
	-- chandrabindu
	 = 'ṅ',
	
	-- anusvara
	 = 'ŋ',
	
	-- visarga
	 = 'ḥ',
	
	-- virama
	 = '',
	
	-- numerals
	 = '0',  = '1',  = '2',  = '3',  = '4',
	 = '5',  = '6',  = '7',  = '8',  = '9',
	
	-- punctuation
	 = '.', -- danda
	 = '.', -- double danda
	 = '', -- compound separator
	
	-- abbreviation sign
	 = '.',
}

-- These clusters when occurring word-finally will not trigger a schwa added
-- after them even though the second consonant is in special_cons, which normally
-- causes the extra schwa to be added. NOTE: The clusters are reversed from their
-- ultimate effect, e.g. the first cluster is written 'ml' but actually applies
-- to words ending in 'lm'. The clusters below overall refer to the six clusters
-- describable by , i.e. rm, rn, rv, lm, ln, lv.
local perm_cl = {
	 = true,  = true,  = true,
	 = true,  = true,  = true,
}

local all_cons, special_cons = 'कखगघङचछजझञटठडढतथदधपफबभशषसयरलवहणनम', 'यरलवहनम'
local vowel, vowel_sign = '*िुेोाैौ’o\'', 'अइउएओआऐऔअ’\''
local long_vowel, short_vowel = 'ाैौआऐऔ', '*िुेो’अइउएओअ\''
local syncope_pattern = '()(़?)o(़?)(?)'

local function rev_string(text)
	local result, length = {}, mw.ustring.len(text)
	for i = length, 1, -1 do
		table.insert(result, mw.ustring.sub(text, i, i))
	end
	return table.concat(result)
end

function export.tr(text, lang, sc)
	--abbreviation dot
	text = gsub(text, '॰', '.')
	text = gsub(text, '(़?)(?)', function(c, d)
		return c .. (d == "" and 'o' or d) end)
	for word in mw.ustring.gmatch(text, "+") do
		local orig_word = word
		word = rev_string(word)
		word = gsub(word, '^o(़?)()(.)(.?)', function(opt, first, second, third)
			return (((match(first, '') and match(second, '्') and not perm_cl)
				or match(first .. second, 'य'))
				and 'o' or "") .. opt .. first .. second .. third end)
		while match(word, syncope_pattern) do
			word = gsub(word, syncope_pattern, '%1%2%3%4')
		end
		word = rev_string(word)
		-- Convert * to %* so we can match it in a regex.
		local escaped_orig_word = gsub(orig_word, "%*", "%*")
		text = gsub(text, escaped_orig_word, word)
	end
	text = gsub(text, '.़?', conv)
    text = gsub(text, '%*', 'o')
	return mw.ustring.toNFC(text)
end

return export
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