-- module variable and administration local lp = { 	moduleInterface = { 		suite  = 'LinkPhone', 		serial = '2024-01-07', 		item   = 16354802 	} }  -- module import -- require( 'strict' ) local li = require( 'Module:Link utilities/i18n' ) local ln = require( 'Module:Link utilities/Phone numbers' ) local lu = require( 'Module:Link utilities' )  local function formatNumber( number, size ) 	if not li.options.formattingWikidata then 		return number 	end  	local pos, first, last, newLast, country, localCode, i  	number = number:gsub( '-', ' ' ) 	i, pos = number:find( '.* ' ) -- find last space 	if size > 0 and pos then 		first = number:sub( 1, pos ) 		last = number:sub( pos + 1, #number ) 		newLast = '' 		if tonumber( last ) then -- inserting additional spaces 			while ( #last > size + 1 ) do 				if newLast == '' then 					newLast = last:sub( -size ) 				else 					newLast = last:sub( -size ) .. ' ' .. newLast 				end 				last = last:sub( 1, #last - size ) 			end 			if newLast ~= '' then 				last = last .. ' ' .. newLast 			end 		end 		pos, i = first:find( ' ' ) 		if li.options.addZeros and pos and ( pos ~= #first ) then 			country = first:sub( 1, pos - 1 ) 			localCode = first:sub( pos + 1, #first ) 			if not ln.noZero[ country ] then 				localCode = localCode:gsub( '[%(%)]', '' ) 				if localCode:sub( 1, 1 ) == '0' then 					localCode = '(0)' .. localCode:sub( 2, #localCode )  				else 					localCode = '(0)' .. localCode 				end 				first = country .. ' ' .. localCode 			end 		end 		number = first .. last 	end 	return number end  -- look for phone-number patterns which are valid local numbers local function checkNumberMatch( key, number ) 	local ar = ln.exceptions[ key ] 	if not ar then 		return false 	end 	for i = 1, #ar, 1 do 		if number:find( ar[ i ] ) then 			return true 		end 	end 	return false end  local function extractExtension( number ) 	local ext = '' 	local t 	for i, extension in ipairs( li.extensions ) do 		t = mw.ustring.gsub( number, '^.*(' .. extension .. ')$', '%1' ) 		if t ~= number then 			ext = t:gsub( '%s*=', ' ' ) -- RFC 3966 			number = mw.ustring.gsub( number, '[%s%c]*(' .. extension .. ')$', '' ) 			break 		end 	end 	return number, ext end  -- handle a single phone number s function lp.linkPhoneNumber( s, args, isDemo ) 	local number = mw.text.trim( s ) 	if number == '' then 		return '' 	end 	local catPrefix = isDemo and ' [[:Category:' or '[[Category:'  	local ext = '' 	local extraCats = '' 	local comment, t 	args.cc = args.cc:gsub( '%-', '' )  	number, comment = lu.extractComment( number ) 	number, ext = extractExtension( number )  	-- normalize country calling code 	number = number:gsub( '^00+', '+' ) 		:gsub( '^%+%++', '+' )  	-- add country calling code, remove lead zero 	if args.cc ~= '' then 		if li.options.withCountryCode and number:sub( 1, 1 ) ~= '+' then 			number = args.cc .. ' ' .. number 		end 		if li.options.preventLeadZero and not ln.noZero[ args.cc ] then 			number = number:gsub( '^(%' .. args.cc .. '%s+)%(+0%)+', '%1' ) 				:gsub( '%(+', '' ):gsub( '%)+', '' ) 		end 	end  	-- formatting phone numbers retrieved from Wikidata 	if args.format then 		number = formatNumber( number, args.size ) 	end  	if li.options.addZeros and not ln.zeroExceptions[ args.cc ] and not number:find( '^00' ) then 		number = number:gsub( '^0', '(0)' ) 	end 	if li.options.addZeros and args.cc ~= '' and not ln.zeroExceptions[ args.cc ] then 		number = number:gsub( '^(%' .. args.cc .. ')( *)0', '%1%2(0)' ) 	end  	-- plain is number for link 	local plain = number 	-- check if slashes are used 	if plain:find( '/', 1, true ) then 		extraCats = catPrefix .. li.categories.withSlash 	end  	-- remove delimiters -.()/' and spaces 	-- including thin space 	plain = mw.ustring.gsub( plain, "[  '/%.%-%)]", '' ) 	local exception = false  	-- handling country code including ++49, 0049 etc. 	if plain:sub( 1, 1 ) == '+' then 		plain = plain:gsub( '%(0', '' ) -- zero in parenthesis 			:gsub( '%(', '' ) 	else 		plain = plain:gsub( '%(0', '0' ) 		if comment ~= '' and checkNumberMatch( 'service', comment ) then 			exception = true 			number = number:gsub( '[%(%)]', '' ) 		elseif args.isTollfree and checkNumberMatch( 'tollfree', plain ) then 			exception = true 			number = number:gsub( '[%(%)]', '' ) 		elseif checkNumberMatch( args.cc, plain ) then 			exception = true 		elseif args.cc ~= '' then 			if ln.noZero[ args.cc ] then 				plain = args.cc .. plain:gsub( '^%(', '' ) 			elseif plain:sub( 1, 1 ) == '0' then 				plain = args.cc .. plain:gsub( '^0', '' ) 			else 				return s .. catPrefix .. li.categories.invalid 			end 		else 			return s .. catPrefix .. li.categories.noCC 		end 	end  	-- minimum 5 characters including country code 	if not exception and #plain < 5 then 		return s .. catPrefix .. li.categories.invalid 	end  	-- lower case letters for numbers are not allowed 	if plain:find( '%l' ) then 		return s .. catPrefix .. li.categories.invalid 	elseif plain:find( '%u' ) then 		-- substitude letters 		local letters = { '', '[A-C]', '[D-F]', '[G-I]', '[J-L]', '[M-O]', 			'[P-S]', '[T-V]', '[W-Z]' } 		for i = 2, 9 do 			plain = plain:gsub( letters[ i ], '' .. i ) 		end 	end  	-- remove zero from local area code 	if args.cc ~= '' and not ln.zeroExceptions[ args.cc ] then 		plain = plain:gsub( args.cc .. '0', args.cc ) 	end  	-- final test 	if not exception and not plain:match( '^%+%d+$' ) then 		return s .. catPrefix .. li.categories.invalid 	end  	-- assemble number, link, ext, comment, and categories 	t = '<span data-phone="' .. plain .. '" class="listing-phone-number' 	if not args.isFax then 		t = t .. ' plainlinks nourlexpansion' 		number = ( '[tel:%s %s]' ):format( plain, number ) 	end 	if exception then 		t = t .. ' listing-phone-exception" title="' .. li.categories.onlyDomestic 	end 	t = t .. '">' .. number .. '</span>'  	return t .. ( ext ~= '' and ( ' ' .. ext ) or '' ) .. 		( comment ~= '' and ( ' ' .. comment ) or '' ) .. extraCats end  function lp.linkPhoneNumbers( args ) 	local addNum = li.addNum 	if args.isFax then 		addNum = li.addNumFax 	end 	args.cc = args.cc:gsub( '^00', '+' ):gsub( '^%+%++', '+' )  	local ns     = mw.title.getCurrentTitle().namespace 	local isDemo = ns == 10 or ns == 828  	-- split separate numbers 	local items = lu.splitItems( args.phone, li.delimiters )  	-- analyse phone numbers 	local result = '' 	local i = 0 	local s 	for j, item in ipairs( items ) do 		s = lp.linkPhoneNumber( item, args, isDemo ) 		if s ~= '' then 			if result == '' then 				result = s 			else 				if i == addNum then 					result = result .. '<span class="listing-add-contact">' 				end 				result = result .. li.texts.comma .. s 			end 			i = i + 1 		end 	end 	if i > addNum then 		result = result .. '</span>' 	end 	return result; end  function lp.getTrunkPrefix( cc ) 	return ln.noZero[ cc ] and '' or '0' end  return lp