Module:Month

local p = {}

local monthData = mw.loadData( 'Module:Month/data' )
local monthAliases = monthData[1]
local monthNumbers = monthData[2]

function p.trim( s, charset )
	if s == nil then
		return ''
	end
	charset = charset or '\t\r\n\f '
	s = mw.ustring.gsub( s, '^[' .. charset .. ']*(.-)[' .. charset .. ']*$', '%1' )
	return s
end

function p.month( frame )
	local month = p.trim( frame.args[1] )
	local monthAlias = monthAliases[string.lower( month )]
	if monthAlias ~= nil then
		return monthAlias
	end
	return month
end

function p._month( item )
	local month = p.trim( item )
	local monthAlias = monthAliases[string.lower( month )]
	if monthAlias ~= nil then
		return monthAlias
	end
	return month
end

function p.monthNo( frame )
	local month = p.trim( frame.args[1] )
	local monthNumber = monthNumbers[string.lower( month )]
	if monthNumber ~= nil then
		return monthNumber
	end
	return month
end

return p