查看“模块:Util”的源代码

--[[ 
	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 util = require( "Module:Util")'
	This will ensure consistency between modules.
]]

local util = {}

-- return pagename without any disambiguation title
function util.corename(frame)
    local result = mw.ustring.gsub(mw.title.getCurrentTitle().subpageText, '%s%(.*', '')
    return result
end

--[[ Added this function in as a common method to check if a variable is 
	populated. Old code was making this check multiple times in different forms.
	The child parameter is to check if a row exists when object is a table.
	]]
function util.exists(object, child)
	if object ~= nil and object ~= '' then
		if child ~= nil then
			if object[child] ~= nil and object[child] ~= '' then
				return true
			else
				return false
			end
		else
			return true
		end
	else
		return false
	end
end

--Trim function from http://lua-users.org/wiki/StringTrim
function util.trim(s)
   return s:match'^()%s*$' and '' or s:match'^%s*(.*%S)'
end

return util