Modul:Check for unknown parameters

Dokumentationen för denna modul kan skapas på Modul:Check for unknown parameters/dok

-- This module may be used to compare the arguments passed to the parent
-- with a list of arguments, returning a specified result if an argument is
-- not on the list
local p = {}

local function isnotempty(s)
return s and s:match( '^%s*(.-)%s*$' ) ~= ''
end

function p.check (frame)
local args = frame.args
local pargs = frame:getParent().args
local ignoreblank = isnotempty(frame.args['ignoreblank'])
local checkpos = isnotempty(frame.args['checkpositional'])
local knownargs = {}
local unknown = 'Found _VALUE_, '

local res = {}

-- create the list of known args, and the return string
for k, v in pairs(args) do
if type(k) == 'number' then
v = mw.ustring.gsub(v, '^%s*(.-)%s*$', '%1')
knownargs[v] = 1
else
if (k == 'unknown' and type(v) == 'string') then
unknown = v
end
end
end

-- loop over the parent args, and make sure they are on the list
for k,v in pairs(pargs) do
if (type(k) == 'string' and knownargs[k] == nil) then
if( (not ignoreblank) or (ignoreblank and isnotempty(v)) ) then
k = mw.ustring.gsub(k, '[^%w\-_ ]', '?')
local r = mw.ustring.gsub(unknown, '_VALUE_', k)
table.insert(res, r)
end
elseif(checkpos and type(k) == 'number' and knownargs[tostring(k)] == nil) then
if( (not ignoreblank) or (ignoreblank and isnotempty(v)) ) then
local r = mw.ustring.gsub(unknown, '_VALUE_', k)
table.insert(res, r)
end
end
end

return table.concat(res)
end

return p