Module:Complex date

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This documentation is transcluded from Module:Complex date/doc.

local p = {}
local era = require('Module:Era')
local i18n = require('Module:i18n/other date')
local langSwitch = require('Module:Fallback')._langSwitch
local maintenancecat = 'Pages with incorrect usage of Module:Other date'
local datemod = require('Module:Date')
local makeera = require('Module:Era')._era
local linguistic = require('Module:Linguistic')

function yearunknown(lang)
	return langSwitch(i18n['yeark unknown'], lang)
end

function p._otherCalend(datetype, first, second, lang, era)
	if datetype == 'islamic' then
		if era == nil then era = 'AD' end
		return makeera(first, era, lang) .. ' (' .. makeera(second, 'AH', lang) .. ')'
	end
end

function p._twoDate(datetype, first, second, lang, era)
	if datetype ~= 'century' then
		-- hack to make use of ISOdate
		local frame = {}
		frame.args = {lang=lang}
		frame.args[1] = first
		first = datemod.ISOdate(frame)
		frame.args[1] = second
		second = datemod.ISOdate(frame)
		----
	end

	local pattern = i18n[datetype][lang] -- checks if there is a special case for this and, else use linguistic.conj function
	local outputstr
	if pattern then
		outputstr =  mw.ustring.gsub(pattern, '$date1', first)
		outputstr =  mw.ustring.gsub(outputstr, '$date2', second)
	else
		outputstr = linguistic.conj({first, second}, lang)
	end

	return makeera(outputstr, era, lang) 
end

function p.otherdate(frame)
	local args = frame.args
	local lang = frame.args.lang
	if not lang or lang == '' then
		lang = frame:preprocess('{{int:lang}}')
	end
	local datetype = string.lower(args[1])
	local first = args[2]
	local second
	local era
	
	if args[3] == 'BEFORE PRESENT' or args[3] == 'BP' or args[3] == 'BCE' or args[3] == 'BC' or args[3] == 'CE' or args[3] == 'AD' then
		era = args[3]
	elseif args[3] ~= '' then
		second = args[3]
	end
	
	if args['era'] ~= '' then
		era = args['era']
	else
		era = nil
	end

	if datetype == 'islamic' or datetype == 'julian' then
		if second then
			return p._otherCalend(datetype, first, second, lang, era)
		else
			return p._otherCalend(datetype, first, frame:callParserFunction('#time', 'xmY', first), lang, era)
		end
	elseif second then
		if datetype == '~' or datetype == 'ca' or datetype == 'circa' then
			datetype = 'circa2'
		elseif datetype == '&' then
			datetype = 'and'
		end
		
		return p._twoDate(datetype, first, second, lang, era)
	else
		return p._oneDate(datetype, first, lang)
	end
	if datetype == 'year unknown' then
		return p._yearunknown(lang)
	end
end
return p