Module:Common

Additional functions that are common to other modules. Although they could be called into templates the overhead call into lua would generally greater than using a built in mediawiki parser function where one exists.

When calling in to another module, use local com = require( "Module:Common"). This will ensure consistency between modules.

---

local a = require('Module:Arguments')
local com = {}

function com.trim(object)
	--Use of while instead of if incase multiple whitespaces are present.
	if com.exists(object) then
		while string.sub(object, 1, 1) == ' ' do 
			object = string.sub(object, 2)
		end
	
		while string.sub(object, string.len(object)) == ' ' do
			object = string.sub(object, 1, string.len(object) - 1)
		end
	end
	
	return object
end

function com.exists(object)
	if object == nil or object == '' then
		return false
	else
		return true
	end
end

function com.modulePagename(title)
	if not title then
		title = mw.title.getCurrentTitle()
	end
	
	local disambig = string.find(title, '%(')
	if string.sub(title, string.length(title)) == '%)' then
		local check = disambig
		while check do
			local check = string.find(title, '%(', check + 1)
			if check ~= 0 then
				disambig = check
			end
		end
	end
	
	title = string.sub(title, 1, disambig)
	return title
end

function com.pagename(frame)
	local args = a.getArgs(frame)
	return trim(com.modulePagename(args['title']))
end

return com