Module:Yesno

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This module implements a function used by Template:Yesno. For the wrapper function, see Module:Utils.

English Wikipedia has an article on:

Module:Yesno

Introspection summary for Module:Yesno
Functions provided (1) Line Function Params 7 none (val, default)	Lua modules required (0) Variable Module Functions used

No function descriptions were provided. The Lua code may have further information.

---

-- Function allowing for consistent treatment of boolean-like wikitext input.

-- TODO: refactor so this provides both the function below and its own wrapper
-- This is so Template:Yesno does not need to depend on a different module for
-- a wrapper

return function(val, default)
	-- If your wiki uses non-ascii characters for any of "yes", "no", etc., you
	-- should replace "val:lower()" with "mw.ustring.lower(val)" in the
	-- following line.
	val = (type(val) == "string" and mw.ustring.lower(val) or val)
	if val == nil then
		return nil
	elseif val == true 
		or val == "yes"
		or val == "y"
		or val == "true"
		or val == "t"
		or val == "on"
		or tonumber(val) == 1
	then
		return true
	elseif val == false
		or val == "no"
		or val == "n"
		or val == "false"
		or val == "f"
		or val == "off"
		or tonumber(val) == 0
	then
		return false
	else
		return default
	end
end