Module:Political party

Documentation for this module may be created at Module:Political party/doc

local p = {}

local function stripToNil(text)
	-- If text is a string, return its trimmed content, or nil if empty.
	-- Otherwise return text (which may, for example, be nil).
	if type(text) == 'string' then
		text = text:match('(%S.-)%s*$')
	end
	return text
end

local function fetch(frame)
	local party = nil
	local index = nil
	local return_value = nil
	local args = frame.args
 
	party = stripToNil(args[1]) or error('parameter 1 should be a party name')
	out_type = stripToNil(args[2]) or error('parameter 2 should be the output type')
	index = mw.ustring.sub(party,1,1)
	local datamod = mw.loadData('Module:Political names/' .. out_type .. '/' .. index)
	local data_all = datamod.full
	local data_alt = datamod.alternate
	
	return_value = data_all[party] or data_all[data_alt[party]]
	
	-- If database value doesn't exist, return input
	if return_value == nil and frame.args[1] ~= nil then
		return_value = error('value not in template. Please request that it be added')
	end
	
	return return_value	
end

function p.main(frame)
	return fetch(frame.args)
end

return p