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&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;--[[&lt;br /&gt;
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                                                        |_|&lt;br /&gt;
&lt;br /&gt;
This module is intended for creation of complex date phrases in variety of languages.&lt;br /&gt;
&lt;br /&gt;
Once deployed, please do not modify this code without applying the changes first at Module:Complex date/sandbox and testing&lt;br /&gt;
at Module:Complex date/sandbox/testcases.&lt;br /&gt;
&lt;br /&gt;
Authors and maintainers:&lt;br /&gt;
* User:Sn1per - first draft of the original version&lt;br /&gt;
* User:Jarekt - corrections and expansion of the original version&lt;br /&gt;
]]&lt;br /&gt;
&lt;br /&gt;
-- List of external modules and functions&lt;br /&gt;
local p = {Error = nil}&lt;br /&gt;
local i18n       = require('Module:i18n/complex date')   -- used for translations of date related phrases&lt;br /&gt;
local ISOdate    = require('Module:ISOdate')._ISOdate    -- used for parsing dates in YYYY-MM-DD and related formats&lt;br /&gt;
local Calendar   -- loaded lazily&lt;br /&gt;
&lt;br /&gt;
-- ==================================================&lt;br /&gt;
-- === Internal functions ===========================&lt;br /&gt;
-- ==================================================&lt;br /&gt;
&lt;br /&gt;
local function langSwitch(list,lang)&lt;br /&gt;
	local langList = mw.language.getFallbacksFor(lang)&lt;br /&gt;
	table.insert(langList,1,lang)&lt;br /&gt;
	table.insert(langList,math.max(#langList,2),'default')&lt;br /&gt;
	for i,language in ipairs(langList) do&lt;br /&gt;
		if list[language] then&lt;br /&gt;
			return list[language]&lt;br /&gt;
		end&lt;br /&gt;
	end&lt;br /&gt;
end&lt;br /&gt;
&lt;br /&gt;
-- ==================================================&lt;br /&gt;
local function formatnum1(numStr, lang)&lt;br /&gt;
-- mostly require('Module:Formatnum').formatNum function used to translate a number to use different numeral characters,&lt;br /&gt;
-- except that it it does not call  that function unless the language is on the list &amp;quot;LList&amp;quot;&lt;br /&gt;
	local LList = {bn=1,bpy=1,kn=1,hi=1,mr=1,new=1,pa=1,gu=1,fa=1,glk=1,mzn=1,ur=1,ar=1,ckb=1,ks=1,lo=1,['or']=1,bo=1,['ml-old']=1,mn=1,te=1,th=1}&lt;br /&gt;
	if LList[lang] then -- call only when the language is on the list&lt;br /&gt;
		numStr = require('Module:Formatnum').formatNum(numStr, lang, 1)&lt;br /&gt;
	end&lt;br /&gt;
	return numStr&lt;br /&gt;
end&lt;br /&gt;
&lt;br /&gt;
-- ==================================================&lt;br /&gt;
local function getISODate(datestr, datetype, lang, num, case)&lt;br /&gt;
-- translate dates in the format YYYY, YYYY-MM, and YYYY-MM-DD&lt;br /&gt;
	if  not case and i18n.Translations[datetype] then&lt;br /&gt;
		-- look up the grammatical case needed and call ISOdate module&lt;br /&gt;
		local rec = langSwitch(i18n.Translations[datetype], lang)&lt;br /&gt;
		if type(rec)=='table' then&lt;br /&gt;
			case = rec.case[num]&lt;br /&gt;
		end&lt;br /&gt;
	end&lt;br /&gt;
	return ISOdate(datestr, lang, case, '', 1)&lt;br /&gt;
end&lt;br /&gt;
&lt;br /&gt;
-- =======================================================================&lt;br /&gt;
local function translatePhrase(date1, date2, operation, lang, state)&lt;br /&gt;
-- use tables in Module:i18n/complex date to translate a phrase&lt;br /&gt;
	if not i18n.Translations[operation] then&lt;br /&gt;
		p.Error = string.format('&amp;lt;span style=&amp;quot;background-color:red;&amp;quot;&amp;gt;Error in [[Module:Complex date]]: input parameter &amp;quot;%s&amp;quot; is not recognized.&amp;lt;/span&amp;gt;', operation or 'nil')&lt;br /&gt;
		return ''&lt;br /&gt;
	end&lt;br /&gt;
	local dateStr = langSwitch(i18n.Translations[operation], lang)&lt;br /&gt;
	if type(dateStr)=='table' then&lt;br /&gt;
		dateStr = dateStr[1]&lt;br /&gt;
	end&lt;br /&gt;
	if type(dateStr)=='function' then&lt;br /&gt;
		local dateFunc = dateStr&lt;br /&gt;
		local nDates = i18n.Translations[operation]['nDates']&lt;br /&gt;
		if nDates==2 then -- 2 date phrase&lt;br /&gt;
			dateStr = dateFunc(date1, date2, state)&lt;br /&gt;
		else  -- 1 date phrase&lt;br /&gt;
			dateStr = dateFunc(date1, state)&lt;br /&gt;
		end&lt;br /&gt;
	end&lt;br /&gt;
	&lt;br /&gt;
	if type(dateStr)=='string' then&lt;br /&gt;
		-- replace parts of the string '$date1' and '$date2' with date1 and date2 strings&lt;br /&gt;
		dateStr = mw.ustring.gsub(dateStr, '$date1', date1)&lt;br /&gt;
		dateStr = mw.ustring.gsub(dateStr, '$date2', date2)&lt;br /&gt;
	else&lt;br /&gt;
		-- Special case of more complex phrases that can be build out of simple phrases&lt;br /&gt;
		-- If complex case is not translated to &amp;quot;lang&amp;quot; than build it out of simpler ones&lt;br /&gt;
		local x = dateStr&lt;br /&gt;
		dateStr = p._complex_date(x.conj, x.adj1, date1, x.units1, x.era1, x.adj2, date2, x.units2, x.era2, lang, 2)&lt;br /&gt;
	end&lt;br /&gt;
	return dateStr&lt;br /&gt;
end&lt;br /&gt;
&lt;br /&gt;
-- =======================================================================&lt;br /&gt;
local function oneDatePhrase(dateStr, adj, era, units, lang, num, case, state)&lt;br /&gt;
-- translate a single date phrase&lt;br /&gt;
	if num==2 then&lt;br /&gt;
		state.adj, state.era, state.units, state.precision = state.adj2, state.era2, state.units2, state.precision2&lt;br /&gt;
	end&lt;br /&gt;
	&lt;br /&gt;
	-- dateStr can have many forms: ISO date, year or a number for&lt;br /&gt;
	-- decade, century or millennium&lt;br /&gt;
	if units == '' then -- unit is &amp;quot;year&amp;quot;, &amp;quot;month&amp;quot;, &amp;quot;day&amp;quot;&lt;br /&gt;
		dateStr = getISODate(dateStr, adj, lang, num, case)&lt;br /&gt;
	else -- units is &amp;quot;decade&amp;quot;, &amp;quot;century&amp;quot;, &amp;quot;millennium''&lt;br /&gt;
		dateStr = translatePhrase(dateStr, '', units, lang, state)&lt;br /&gt;
	end&lt;br /&gt;
	&lt;br /&gt;
	-- add adjective (&amp;quot;early&amp;quot;, &amp;quot;mid&amp;quot;, etc.) or preposition (&amp;quot;before&amp;quot;, &amp;quot;after&amp;quot;,&lt;br /&gt;
	-- &amp;quot;circa&amp;quot;, etc.) to the date&lt;br /&gt;
	if adj ~= '' then&lt;br /&gt;
		dateStr = translatePhrase(dateStr, '', adj, lang, state)&lt;br /&gt;
	else -- only era?&lt;br /&gt;
		dateStr = formatnum1(dateStr, lang)&lt;br /&gt;
	end&lt;br /&gt;
	&lt;br /&gt;
	-- add era&lt;br /&gt;
	if era ~= '' then&lt;br /&gt;
		dateStr = translatePhrase(dateStr, '', era, lang, state)&lt;br /&gt;
	end&lt;br /&gt;
	return dateStr&lt;br /&gt;
end&lt;br /&gt;
&lt;br /&gt;
-- =======================================================================&lt;br /&gt;
local function twoDatePhrase(date1, date2, state, lang)&lt;br /&gt;
-- translate a double date phrase&lt;br /&gt;
	local dateStr, case&lt;br /&gt;
	local era=''&lt;br /&gt;
	if state.era1 == state.era2 then&lt;br /&gt;
		-- if both eras are the same than add it only once&lt;br /&gt;
		era = state.era1&lt;br /&gt;
		state.era1 = ''&lt;br /&gt;
		state.era2 = ''&lt;br /&gt;
	end&lt;br /&gt;
	case = {nil, nil}&lt;br /&gt;
	if i18n.Translations[state.conj] then&lt;br /&gt;
		local rec = langSwitch(i18n.Translations[state.conj], lang)&lt;br /&gt;
		if type(rec)=='table' then&lt;br /&gt;
			case = rec.case&lt;br /&gt;
		end&lt;br /&gt;
	end&lt;br /&gt;
	date1   = oneDatePhrase(date1, state.adj1, state.era1, state.units1, lang, 1, case[1], state)&lt;br /&gt;
	date2   = oneDatePhrase(date2, state.adj2, state.era2, state.units2, lang, 2, case[2], state)&lt;br /&gt;
	dateStr = translatePhrase(date1, date2, state.conj, lang, state)&lt;br /&gt;
	if era ~= '' then&lt;br /&gt;
		dateStr = translatePhrase(dateStr, '', era, lang, state)&lt;br /&gt;
	end&lt;br /&gt;
	return dateStr&lt;br /&gt;
end&lt;br /&gt;
&lt;br /&gt;
-- =======================================================================&lt;br /&gt;
local function otherPhrases(date1, date2, operation, era, lang, state)&lt;br /&gt;
-- translate specialized phrases&lt;br /&gt;
	local dateStr = ''&lt;br /&gt;
		&lt;br /&gt;
	if operation == 'islamic' then&lt;br /&gt;
		if date2=='' then date2 = mw.getCurrentFrame():callParserFunction('#time', 'xmY', date1) end&lt;br /&gt;
		date1 = getISODate(date1, operation, lang, 1, nil)&lt;br /&gt;
		date2 = getISODate(date2, operation, lang, 2, nil)&lt;br /&gt;
		if era == '' then era = 'ad' end&lt;br /&gt;
		dateStr = translatePhrase(date1, '', era, lang, state) .. ' (' .. translatePhrase(date2, '', 'ah', lang, state) .. ')'&lt;br /&gt;
		era = ''&lt;br /&gt;
	elseif operation == 'julian' then&lt;br /&gt;
		if not date2 and date1 then -- Convert from Julian to Gregorian calendar date&lt;br /&gt;
			if Calendar == nil then&lt;br /&gt;
				Calendar = require(&amp;quot;Module:Calendar&amp;quot;) -- lazy loding (only if needed)&lt;br /&gt;
			end&lt;br /&gt;
			local JDN = Calendar._date2jdn(date1, 0)&lt;br /&gt;
			if JDN then&lt;br /&gt;
				date2 = date1 -- first date is assumed to be Julian&lt;br /&gt;
				date1 = Calendar._jdn2date(JDN, 1)&lt;br /&gt;
			end&lt;br /&gt;
		end&lt;br /&gt;
		date1 = getISODate(date1, operation, lang, 1, nil)&lt;br /&gt;
		date2 = getISODate(date2, operation, lang, 2, nil)&lt;br /&gt;
		dateStr = translatePhrase(date1, date2, operation, lang, state)&lt;br /&gt;
		dateStr = mw.ustring.gsub(mw.ustring.gsub(dateStr, '%( ', '('), ' %)', ')') -- in case date2 is empty&lt;br /&gt;
	elseif operation == 'turn of the year' or operation == 'turn of the decade' or operation == 'turn of the century' then&lt;br /&gt;
		local dt = 1&lt;br /&gt;
		if operation == 'turn of the decade' then dt=10 end&lt;br /&gt;
		if not date2 or date2=='' then date2=tostring(tonumber(date1)-dt) end&lt;br /&gt;
		if era~='bp' and era~='bc' then date1, date2 = date2, date1 end&lt;br /&gt;
		if operation == 'turn of the year' then&lt;br /&gt;
			date1 = ISOdate(date1, lang, '', '', 1)&lt;br /&gt;
			date2 = ISOdate(date2, lang, '', '', 1)&lt;br /&gt;
		else&lt;br /&gt;
			date1 = formatnum1(date1, lang)&lt;br /&gt;
			date2 = formatnum1(date2, lang)&lt;br /&gt;
		end&lt;br /&gt;
		dateStr = translatePhrase(date1, date2, operation, lang, state)&lt;br /&gt;
	elseif operation == 'year unknown' then&lt;br /&gt;
		dateStr = translatePhrase('', '', operation, lang, state) .. '&amp;lt;div style=&amp;quot;display: none;&amp;quot;&amp;gt;Unknown date&amp;lt;/div&amp;gt;'&lt;br /&gt;
	elseif operation == 'unknown' then&lt;br /&gt;
		dateStr = tostring(mw.message.new( &amp;quot;exif-unknowndate&amp;quot; ):inLanguage( lang )) .. '&amp;lt;div style=&amp;quot;display: none;&amp;quot;&amp;gt;Unknown date&amp;lt;/div&amp;gt;'&lt;br /&gt;
	end&lt;br /&gt;
	&lt;br /&gt;
	-- add era&lt;br /&gt;
	if era ~= '' then&lt;br /&gt;
		dateStr = translatePhrase(dateStr, '', era, lang, state)&lt;br /&gt;
	end&lt;br /&gt;
	return dateStr&lt;br /&gt;
end&lt;br /&gt;
&lt;br /&gt;
-- =======================================================================&lt;br /&gt;
local function checkAliases(str1, str2, sType)&lt;br /&gt;
-- some inputs have many aliases - reconcile them and ensure string is playing a proper role	&lt;br /&gt;
	local out = ''&lt;br /&gt;
	if str1 and str1~='' then&lt;br /&gt;
		local a = i18n.Synonyms[str1] -- look up synonyms of &amp;quot;str1&amp;quot;&lt;br /&gt;
		if a then&lt;br /&gt;
			out = a[1]&lt;br /&gt;
		else&lt;br /&gt;
			p.Error = string.format('&amp;lt;span style=&amp;quot;background-color:red;&amp;quot;&amp;gt;Error in [[Module:Complex date]]: %s is not recognized.&amp;lt;/span&amp;gt;', str1)&lt;br /&gt;
		end&lt;br /&gt;
	elseif str2 and str2~='' then -- if &amp;quot;str1&amp;quot; of type &amp;quot;sType&amp;quot; is empty than maybe ...&lt;br /&gt;
		local a = i18n.Synonyms[str2]   -- ...&amp;quot;str2&amp;quot; is of the same type and is not empty&lt;br /&gt;
		if a and a[2]==sType then&lt;br /&gt;
			out  = a[1]&lt;br /&gt;
			str2 = ''&lt;br /&gt;
		end&lt;br /&gt;
	end&lt;br /&gt;
	return out, str2&lt;br /&gt;
end&lt;br /&gt;
&lt;br /&gt;
-- =======================================================================&lt;br /&gt;
local function datePrecision(dateStr, units)&lt;br /&gt;
-- &amp;quot;in this module &amp;quot;Units&amp;quot; is a string like millennium, century, or decade&lt;br /&gt;
--	&amp;quot;precision&amp;quot; is wikibase compatible date precision number: 6=millennium, 7=century, 8=decade, 9=year, 10=month, 11=day&lt;br /&gt;
-- based on string or numeric input calculate &amp;quot;Units&amp;quot; and &amp;quot;precision&amp;quot;&lt;br /&gt;
	local precision&lt;br /&gt;
	if type(units)=='number' then&lt;br /&gt;
		precision = units&lt;br /&gt;
		if precision&amp;gt;11 then precision=11 end -- clip the range of precision values&lt;br /&gt;
		if     precision==6 then units='millennium'&lt;br /&gt;
		elseif precision==7 then units='century'&lt;br /&gt;
		elseif precision==8 then units='decade'&lt;br /&gt;
		else units = ''&lt;br /&gt;
		end&lt;br /&gt;
	elseif type(units)=='string' then&lt;br /&gt;
		units = string.lower(units)&lt;br /&gt;
		if     units=='millennium' then precision=6&lt;br /&gt;
		elseif units=='century'    then precision=7&lt;br /&gt;
		elseif units=='decade'     then precision=8&lt;br /&gt;
		else precision=9&lt;br /&gt;
		end&lt;br /&gt;
	end&lt;br /&gt;
	if units=='' or precision==9 then&lt;br /&gt;
		local sLen = mw.ustring.len(dateStr)&lt;br /&gt;
		if     sLen&amp;lt;= 4 then precision=9&lt;br /&gt;
		elseif sLen== 7 then precision=10&lt;br /&gt;
		elseif sLen&amp;gt;=10 then precision=11&lt;br /&gt;
		end&lt;br /&gt;
		units=''&lt;br /&gt;
	end&lt;br /&gt;
	if precision==6 and dateStr.match( dateStr, '%d000' )~=nil then&lt;br /&gt;
		dateStr = tostring(math.floor(tonumber(dateStr)/1000) +1)&lt;br /&gt;
	elseif precision==7 and mw.ustring.match( dateStr, '%d%d00' )~=nil then&lt;br /&gt;
		dateStr = tostring(math.floor(tonumber(dateStr)/100) +1)&lt;br /&gt;
	end&lt;br /&gt;
&lt;br /&gt;
	return dateStr, units, precision&lt;br /&gt;
end&lt;br /&gt;
&lt;br /&gt;
-- =======================================================================&lt;br /&gt;
local function isodate2timestamp(dateStr, precision, era)&lt;br /&gt;
-- convert date string to timestamps used by Quick Statements&lt;br /&gt;
	local tStamp = nil&lt;br /&gt;
	if era == 'ah' or precision&amp;lt;6 then&lt;br /&gt;
		return nil&lt;br /&gt;
	elseif era ~= '' then&lt;br /&gt;
		local eraLUT = {ad='+', bc='-', bp='-' }&lt;br /&gt;
		era = eraLUT[era]&lt;br /&gt;
	else&lt;br /&gt;
		era='+'&lt;br /&gt;
	end&lt;br /&gt;
&lt;br /&gt;
-- convert isodate to timestamp used by quick statements&lt;br /&gt;
	if precision&amp;gt;=9 then&lt;br /&gt;
		if string.match(dateStr,&amp;quot;^%d%d%d%d$&amp;quot;) then               -- if YYYY  format&lt;br /&gt;
			tStamp = era .. dateStr .. '-00-00T00:00:00Z/9'&lt;br /&gt;
		elseif string.match(dateStr,&amp;quot;^%d%d%d%d%-%d%d$&amp;quot;) then      -- if YYYY-MM format&lt;br /&gt;
			tStamp = era .. dateStr .. '-00T00:00:00Z/10'&lt;br /&gt;
		elseif string.match(dateStr,&amp;quot;^%d%d%d%d%-%d%d%-%d%d$&amp;quot;) then  -- if YYYY-MM-DD format&lt;br /&gt;
			tStamp = era .. dateStr .. 'T00:00:00Z/11'&lt;br /&gt;
		end&lt;br /&gt;
	elseif precision==8 then -- decade&lt;br /&gt;
		tStamp = era .. dateStr .. '-00-00T00:00:00Z/8'&lt;br /&gt;
	elseif precision==7 then -- century&lt;br /&gt;
		local d = tostring(tonumber(dateStr)-1)&lt;br /&gt;
		tStamp = era .. d .. '50-00-00T00:00:00Z/7'&lt;br /&gt;
	elseif precision==6 then&lt;br /&gt;
		local d = tostring(tonumber(dateStr)-1)&lt;br /&gt;
		tStamp = era .. d .. '500-00-00T00:00:00Z/6'&lt;br /&gt;
	end&lt;br /&gt;
	&lt;br /&gt;
	return tStamp&lt;br /&gt;
end&lt;br /&gt;
&lt;br /&gt;
-- =======================================================================&lt;br /&gt;
local function oneDateQScode(dateStr, adj, era, precision)&lt;br /&gt;
-- create QuickStatements string for &amp;quot;one date&amp;quot; dates&lt;br /&gt;
	local outputStr = ''&lt;br /&gt;
&lt;br /&gt;
	local d = isodate2timestamp(dateStr, precision, era)&lt;br /&gt;
	if not d then&lt;br /&gt;
		return ''&lt;br /&gt;
	end&lt;br /&gt;
	local rLUT = {            early='Q40719727'     , mid='Q40719748',      late='Q40719766',&lt;br /&gt;
		['1quarter']='Q40690303' , ['2quarter']='Q40719649'  , ['3quarter']='Q40719662', ['4quarter']='Q40719674',&lt;br /&gt;
		spring='Q40720559'   , summer='Q40720564'    , autumn='Q40720568'  , winter='Q40720553',&lt;br /&gt;
		firsthalf='Q40719687', secondhalf='Q40719707' }&lt;br /&gt;
	local qLUT = {['from']='P580', ['until']='P582', ['after']='P1319', ['before']='P1326', ['by']='P1326'}&lt;br /&gt;
&lt;br /&gt;
	local refine = rLUT[adj]&lt;br /&gt;
	local qualitier = qLUT[adj]&lt;br /&gt;
&lt;br /&gt;
	if adj=='' then&lt;br /&gt;
		outputStr = d&lt;br /&gt;
	elseif adj=='circa' then&lt;br /&gt;
		outputStr = d..&amp;quot;,P1480,Q5727902&amp;quot;&lt;br /&gt;
	elseif refine then&lt;br /&gt;
		outputStr = d..&amp;quot;,P4241,&amp;quot;..refine&lt;br /&gt;
	elseif precision&amp;gt;7 and qualitier then&lt;br /&gt;
		local century = string.gsub(d, 'Z%/%d+', 'Z/7')&lt;br /&gt;
		outputStr = century ..&amp;quot;,&amp;quot;.. qualitier ..&amp;quot;,&amp;quot;..d&lt;br /&gt;
	end&lt;br /&gt;
	return outputStr&lt;br /&gt;
end&lt;br /&gt;
&lt;br /&gt;
-- =======================================================================&lt;br /&gt;
local function twoDateQScode(date1, date2, state)&lt;br /&gt;
-- create QuickStatements string for &amp;quot;two date&amp;quot; dates&lt;br /&gt;
	if state.adj1~='' or state.adj2~='' or state.era1~=state.era2 then&lt;br /&gt;
		return '' -- QuickStatements string are not generated for two date phrases with adjectives&lt;br /&gt;
	end&lt;br /&gt;
	local outputStr = ''&lt;br /&gt;
	local d1 = isodate2timestamp(date1, state.precision1, state.era1)&lt;br /&gt;
	local d2 = isodate2timestamp(date2, state.precision2, state.era2)&lt;br /&gt;
	if (not d1) or (not d2) then&lt;br /&gt;
		return ''&lt;br /&gt;
	end&lt;br /&gt;
	-- find date with lower precision in common to both dates&lt;br /&gt;
	local cd&lt;br /&gt;
	local year1 = tonumber(string.sub(d1,2,5))&lt;br /&gt;
	local year2 = tonumber(string.sub(d2,2,5))&lt;br /&gt;
	local k = 0&lt;br /&gt;
	for i = 1,10,1 do&lt;br /&gt;
		if string.sub(d1,1,i)==string.sub(d2,1,i) then&lt;br /&gt;
			k = i -- find last matching letter&lt;br /&gt;
		end&lt;br /&gt;
	end&lt;br /&gt;
	if k&amp;gt;=9 then              -- same month, since &amp;quot;+YYYY-MM-&amp;quot; is in common&lt;br /&gt;
		cd = isodate2timestamp(string.sub(d1,2,8), 10, state.era1)&lt;br /&gt;
	elseif k&amp;gt;=6 and k&amp;lt;9 then  -- same year, since &amp;quot;+YYYY-&amp;quot; is in common&lt;br /&gt;
		cd = isodate2timestamp(tostring(year1), 9, state.era1)&lt;br /&gt;
	elseif k==4 then          -- same decade(k=4, precision=8),  since &amp;quot;+YYY&amp;quot; is in common&lt;br /&gt;
		cd = isodate2timestamp(tostring(year1), 8, state.era1)&lt;br /&gt;
	elseif k==3 then          -- same century(k=3, precision=7) since &amp;quot;+YY&amp;quot; is in common&lt;br /&gt;
	  local d = tostring(math.floor(year1/100) +1) -- convert 1999 -&amp;gt; 20&lt;br /&gt;
		cd = isodate2timestamp( d, 7, state.era1)&lt;br /&gt;
	elseif k==2 then          -- same millennium (k=2, precision=6),  since &amp;quot;+Y&amp;quot; is in common&lt;br /&gt;
		local d = tostring(math.floor(year1/1000) +1) -- convert 1999 -&amp;gt; 2&lt;br /&gt;
		cd = isodate2timestamp( d, 6, state.era1)&lt;br /&gt;
	end&lt;br /&gt;
	if not cd then&lt;br /&gt;
		return ''&lt;br /&gt;
	end&lt;br /&gt;
	--if not cd then&lt;br /&gt;
	--	return ' &amp;lt;br/&amp;gt;error: ' .. d1..&amp;quot; / &amp;quot; .. d2..&amp;quot; / &amp;quot;.. (cd or '') ..&amp;quot; / &amp;quot;.. string.sub(d1,2,5)..&amp;quot; / &amp;quot; .. string.sub(d2,2,5)..&amp;quot; / &amp;quot; .. tostring(k)&lt;br /&gt;
	--end&lt;br /&gt;
&lt;br /&gt;
	--&lt;br /&gt;
	if (state.conj=='from-until') or (state.conj=='and' and year1==year2-1) then&lt;br /&gt;
		outputStr = cd ..&amp;quot;,P580,&amp;quot;.. d1 ..&amp;quot;,P582,&amp;quot;.. d2&lt;br /&gt;
	elseif (state.conj=='between') or (state.conj=='or' and year1==year2-1) then&lt;br /&gt;
		outputStr = cd ..&amp;quot;,P1319,&amp;quot;.. d1 ..&amp;quot;,P1326,&amp;quot;.. d2&lt;br /&gt;
	elseif state.conj=='circa2' then&lt;br /&gt;
		outputStr = cd ..&amp;quot;,P1319,&amp;quot;.. d1 ..&amp;quot;,P1326,&amp;quot;.. d2 ..&amp;quot;,P1480,Q5727902&amp;quot;&lt;br /&gt;
	end&lt;br /&gt;
&lt;br /&gt;
	return outputStr&lt;br /&gt;
end&lt;br /&gt;
&lt;br /&gt;
-- =======================================================================&lt;br /&gt;
local function processInputParams(conj, adj1, date1, units1, era1, adj2, date2, units2, era2, lang, passNr)&lt;br /&gt;
&lt;br /&gt;
	-- process inputs and save date in state array&lt;br /&gt;
	local state  = {}&lt;br /&gt;
	state.conj   = string.lower(conj   or '')&lt;br /&gt;
	state.adj1   = string.lower(adj1   or '')&lt;br /&gt;
	state.adj2   = string.lower(adj2   or '')&lt;br /&gt;
	state.era1   = string.lower(era1   or '')&lt;br /&gt;
	state.era2   = string.lower(era2   or '')&lt;br /&gt;
	state.units1 = string.lower(units1 or '')&lt;br /&gt;
	state.units2 = string.lower(units2 or '')&lt;br /&gt;
&lt;br /&gt;
	-- if date 1 is missing but date 2 is provided than swap them&lt;br /&gt;
	if date1 == '' and date2 ~= '' then&lt;br /&gt;
		date1 = date2&lt;br /&gt;
		date2 = ''&lt;br /&gt;
		state = {adj1 = state.adj2, era1 = state.era2, units1 = state.units2, &lt;br /&gt;
		         adj2 = '',         era2 = '',         units2 = '',  conj=state.conj, num=1}&lt;br /&gt;
	end&lt;br /&gt;
	if     date2 ~= '' then state.nDates = 2&lt;br /&gt;
	elseif date1 ~= '' then state.nDates = 1&lt;br /&gt;
	else                    state.nDates = 0&lt;br /&gt;
	end&lt;br /&gt;
&lt;br /&gt;
	-- reconcile alternative names for text inputs&lt;br /&gt;
	local conj         = checkAliases(state.conj ,''  ,'j')&lt;br /&gt;
	state.adj1 ,conj   = checkAliases(state.adj1 ,conj,'a')&lt;br /&gt;
	state.units1,conj  = checkAliases(state.units1,conj,'p')&lt;br /&gt;
	state.era1 ,conj   = checkAliases(state.era1 ,conj,'e')&lt;br /&gt;
	state.special,conj = checkAliases('',conj,'c')&lt;br /&gt;
	state.adj2         = checkAliases(state.adj2 ,'','a')&lt;br /&gt;
	state.units2       = checkAliases(state.units2,'','p')&lt;br /&gt;
	state.era2         = checkAliases(state.era2 ,'','e')&lt;br /&gt;
	state.conj         = conj&lt;br /&gt;
	state.lang         = lang&lt;br /&gt;
	if p.Error~=nil then&lt;br /&gt;
		return nil&lt;br /&gt;
	end&lt;br /&gt;
&lt;br /&gt;
	-- calculate date precision value&lt;br /&gt;
	date1, state.units1, state.precision1 = datePrecision(date1, state.units1)&lt;br /&gt;
	date2, state.units2, state.precision2 = datePrecision(date2, state.units2)&lt;br /&gt;
&lt;br /&gt;
	-- Handle special cases&lt;br /&gt;
	-- Some complex phrases can be created out of simpler ones. Therefore on pass # 1 we try to create&lt;br /&gt;
	-- the phrase using complex phrase and if that is not found than on the second pass we try to build&lt;br /&gt;
	-- the phrase out of the simpler ones&lt;br /&gt;
	if passNr==1 then&lt;br /&gt;
		if state.adj1=='circa' and state.nDates == 2 then&lt;br /&gt;
			state.conj = 'circa2'&lt;br /&gt;
			state.adj1 = ''&lt;br /&gt;
			state.adj2 = ''&lt;br /&gt;
		end&lt;br /&gt;
		if state.nDates == 2 and state.adj1=='late' and state.adj2=='early' and state.conj=='and'&lt;br /&gt;
		and state.units1==state.units2 and state.era1==state.era2 then&lt;br /&gt;
			if state.units1=='century' then&lt;br /&gt;
				state.conj='turn of the century'&lt;br /&gt;
			elseif state.units1=='decade' then&lt;br /&gt;
				state.conj='turn of the decade'&lt;br /&gt;
			elseif state.units1=='' then&lt;br /&gt;
				state.conj='turn of the year'&lt;br /&gt;
			end&lt;br /&gt;
			state.adj1 = ''&lt;br /&gt;
			state.adj2 = ''&lt;br /&gt;
			state.units1 = ''&lt;br /&gt;
			state.units2 = ''&lt;br /&gt;
		end&lt;br /&gt;
	end&lt;br /&gt;
&lt;br /&gt;
	state.adj, state.era, state.units, state.precision = state.adj1, state.era1, state.units1, state.precision1&lt;br /&gt;
	return date1, date2, state&lt;br /&gt;
end&lt;br /&gt;
&lt;br /&gt;
-- ==================================================&lt;br /&gt;
-- === External functions ===========================&lt;br /&gt;
-- ==================================================&lt;br /&gt;
&lt;br /&gt;
function p.Era(frame)&lt;br /&gt;
	-- process inputs&lt;br /&gt;
	local dateStr&lt;br /&gt;
	local args    = frame.args&lt;br /&gt;
	if not (args.lang and mw.language.isSupportedLanguage(args.lang)) then&lt;br /&gt;
		args.lang = frame:callParserFunction( &amp;quot;int&amp;quot;, &amp;quot;lang&amp;quot; ) -- get user's chosen language&lt;br /&gt;
	end&lt;br /&gt;
	local lang    = args['lang']&lt;br /&gt;
	local dateStr = args['date'] or ''&lt;br /&gt;
	local eraType = string.lower(args['era']  or '')&lt;br /&gt;
&lt;br /&gt;
	dateStr = ISOdate(dateStr, lang, '', '', 1)&lt;br /&gt;
	if eraType then &lt;br /&gt;
		eraType = checkAliases(eraType ,'','e')&lt;br /&gt;
		dateStr = translatePhrase(dateStr, '', eraType, lang, {})&lt;br /&gt;
	end&lt;br /&gt;
	return dateStr&lt;br /&gt;
end&lt;br /&gt;
&lt;br /&gt;
-- =======================================================================&lt;br /&gt;
function p._complex_date(conj, adj1, date1, units1, era1, adj2, date2, units2, era2, lang, passNr)&lt;br /&gt;
	local Output=''&lt;br /&gt;
	local state&lt;br /&gt;
&lt;br /&gt;
	-- process inputs and save date in state array&lt;br /&gt;
	date1, date2, state  = processInputParams(conj, adj1, date1, units1, era1, adj2, date2, units2, era2, lang, passNr)&lt;br /&gt;
	if p.Error~=nil then&lt;br /&gt;
		return nil&lt;br /&gt;
	end&lt;br /&gt;
&lt;br /&gt;
	local errorStr = string.format(&lt;br /&gt;
	  '\n*conj=%s, adj1=%s, era1=%s, unit1=%s, prec1=%i, adj2=%s, era2=%s, unit2=%s, prec2=%i, special=%s',&lt;br /&gt;
	  state.conj, state.adj1, state.era1, state.units1, state.precision1,&lt;br /&gt;
	  state.adj2, state.era2, state.units2, state.precision2, state.special)&lt;br /&gt;
&lt;br /&gt;
	-- call specialized functions&lt;br /&gt;
	local QScode = ''&lt;br /&gt;
	if state.special~='' then&lt;br /&gt;
		Output = otherPhrases(date1, date2, state.special, state.era1, lang, state)&lt;br /&gt;
	elseif state.conj~='' then&lt;br /&gt;
		QScode = twoDateQScode(date1, date2, state)&lt;br /&gt;
		Output = twoDatePhrase(date1, date2, state, lang)&lt;br /&gt;
	elseif state.adj1~='' or state.era1~='' or state.units1~='' then&lt;br /&gt;
		Output = oneDatePhrase(date1, state.adj1, state.era1, state.units1, lang, 1, nil, state)&lt;br /&gt;
		QScode = oneDateQScode(date1, state.adj1, state.era1, state.precision1)&lt;br /&gt;
	elseif date1~='' then&lt;br /&gt;
		Output = ISOdate(date1, lang, '', 'dtstart', '100-999')&lt;br /&gt;
	end&lt;br /&gt;
	if p.Error~=nil then&lt;br /&gt;
		return errorStr&lt;br /&gt;
	end&lt;br /&gt;
&lt;br /&gt;
	-- if there is any wikicode in the string than execute it&lt;br /&gt;
	if mw.ustring.find(Output, '{') then&lt;br /&gt;
		Output = mw.getCurrentFrame():preprocess(Output)&lt;br /&gt;
	end&lt;br /&gt;
	if QScode and #QScode&amp;gt;0 then&lt;br /&gt;
		QScode = ' &amp;lt;div style=&amp;quot;display: none;&amp;quot;&amp;gt;date QS:P,' .. QScode .. '&amp;lt;/div&amp;gt;'&lt;br /&gt;
	end&lt;br /&gt;
&lt;br /&gt;
	return Output .. QScode&lt;br /&gt;
end&lt;br /&gt;
&lt;br /&gt;
-- =======================================================================&lt;br /&gt;
function p._complex_date_cer(conj, adj1, date1, units1, era1, adj2, date2, units2, era2, certainty, lang)&lt;br /&gt;
-- same as p._complex_date but with extra parameter for certainty: probably, possibly, presumably, etc.&lt;br /&gt;
	local dateStr = p._complex_date(conj, adj1, date1, units1, era1, adj2, date2, units2, era2, lang, 1)&lt;br /&gt;
	certainty = checkAliases(certainty, conj, 'r')&lt;br /&gt;
	local LUT = {probably='Q56644435',  presumably='Q18122778', possibly='Q30230067', circa='Q5727902' }&lt;br /&gt;
	if certainty and LUT[certainty] then&lt;br /&gt;
		local state  = {} &lt;br /&gt;
		date1, date2, state  = processInputParams(conj, adj1, date1, units1, era1, adj2, date2, units2, era2, lang, 1)&lt;br /&gt;
		dateStr = translatePhrase(dateStr, '', certainty, lang, state)&lt;br /&gt;
		dateStr = string.gsub(dateStr, '(%&amp;lt;div style=&amp;quot;display: none;&amp;quot;%&amp;gt;date QS:P,[^%&amp;lt;]+)(%&amp;lt;/div%&amp;gt;)', '%1,P1480,' .. LUT[certainty] .. '%2' )&lt;br /&gt;
	end&lt;br /&gt;
	return dateStr&lt;br /&gt;
end&lt;br /&gt;
&lt;br /&gt;
-- =======================================================================&lt;br /&gt;
function p.complex_date(frame)&lt;br /&gt;
	-- process inputs&lt;br /&gt;
	local dateStr&lt;br /&gt;
	local args   = frame.args&lt;br /&gt;
	if not (args.lang and mw.language.isSupportedLanguage(args.lang)) then&lt;br /&gt;
		args.lang = frame:callParserFunction( &amp;quot;int&amp;quot;, &amp;quot;lang&amp;quot; ) -- get user's chosen language&lt;br /&gt;
	end&lt;br /&gt;
	local date1  = args['date1'] or args['2'] or args['date'] or ''&lt;br /&gt;
	local date2  = args['date2'] or args['3'] or ''&lt;br /&gt;
	local conj   = args['conj']  or args['1'] or ''&lt;br /&gt;
	local adj1   = args['adj1']  or args['adj'] or ''&lt;br /&gt;
	local adj2   = args['adj2'] or ''&lt;br /&gt;
	local units1 = args['precision1'] or args['precision'] or ''&lt;br /&gt;
	local units2 = args['precision2'] or args['precision'] or ''&lt;br /&gt;
	local era1   = args['era1'] or args['era'] or ''&lt;br /&gt;
	local era2   = args['era2'] or args['era'] or ''&lt;br /&gt;
	local certainty = args['certainty']&lt;br /&gt;
	local lang   = args['lang']&lt;br /&gt;
&lt;br /&gt;
	dateStr = p._complex_date_cer(conj, adj1, date1, units1, era1, adj2, date2, units2, era2, certainty, lang)&lt;br /&gt;
	if p.Error~=nil then&lt;br /&gt;
		dateStr = p.Error .. '[[Category:Pages using Complex date template with incorrect parameter]]'&lt;br /&gt;
	end&lt;br /&gt;
	return dateStr&lt;br /&gt;
end&lt;br /&gt;
&lt;br /&gt;
return p&lt;/div&gt;</summary>
		<author><name>en&gt;RexxS</name></author>
	</entry>
</feed>