پودمان:Check for unknown parameters - ویکی‌پدیا، دانشنامهٔ آزاد

-- 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 trim(s) 	return s:match('^%s*(.-)%s*$') end  local function isnotempty(s) 	return s and s:match('%S') end  local function clean(text) 	-- Return text cleaned for display and truncated if too long. 	-- Strip markers are replaced with dummy text representing the original wikitext. 	local pos, truncated 	local function truncate(text) 		if truncated then 			return '' 		end 		if mw.ustring.len(text) > 25 then 			truncated = true 			text = mw.ustring.sub(text, 1, 25) .. '...' 		end 		return mw.text.nowiki(text) 	end 	local parts = {} 	for before, tag, remainder in text:gmatch('([^\127]*)\127[^\127]*%-(%l+)%-[^\127]*\127()') do 		pos = remainder 		table.insert(parts, truncate(before) .. '&lt;' .. tag .. '&gt;...&lt;/' .. tag .. '&gt;') 	end 	table.insert(parts, truncate(text:sub(pos or 1))) 	return table.concat(parts) end  function p._check(args, pargs) 	if type(args) ~= "table" or type(pargs) ~= "table" then 		-- TODO: error handling 		return 	end  	local ignoreblank = isnotempty(args['ignoreblank']) 	local showblankpos = isnotempty(args['showblankpositional']) 	local knownargs = {} 	local unknown = args['unknown'] or '_VALUE_ یافت شد، ' 	local preview = args['preview']  	local values = {} 	local res = {} 	local regexps = {}  	-- create the list of known args, regular expressions, and the return string 	for k, v in pairs(args) do 		if type(k) == 'number' then 			v = trim(v) 			knownargs[v] = 1 		elseif k:find('^regexp[1-9][0-9]*$') then 			table.insert(regexps, '^' .. v .. '$') 		end 	end 	if isnotempty(preview) then 		preview = '<div class="hatnote" style="color:red"><strong>هشدار:</strong> ' .. preview .. ' (این پیام فقط در حالت پیش‌نمایش ظاهر می‌شود).</div>' 	elseif preview == nil then 		preview = unknown 	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 			local knownflag = false 			for _, regexp in ipairs(regexps) do 				if mw.ustring.match(k, regexp) then 					knownflag = true 					break 				end 			end 			if not knownflag and ( not ignoreblank or isnotempty(v) )  then 				table.insert(values, clean(k)) 			end 		elseif type(k) == 'number' and 			knownargs[tostring(k)] == nil and 			( showblankpos or isnotempty(v) ) 		then 			table.insert(values, k .. ' = ' .. clean(v)) 		end 	end  	-- add results to the output tables 	if #values > 0 then 		if mw.getCurrentFrame():preprocess( "{{REVISIONID}}" ) == "" then 			unknown = preview 		end 		for _, v in pairs(values) do 			if v == '' then 				-- Fix odd bug for | = which gets stripped to the empty string and 				-- breaks category links 				v = ' ' 			end 			-- avoid error with v = 'example%2' ("invalid capture index") 			local r =  unknown:gsub('_VALUE_', {_VALUE_ = v}) 			table.insert(res, r) 		end 	end  	return table.concat(res) end  function p.check(frame) 	local args = frame.args 	local pargs = frame:getParent().args 	return p._check(args, pargs) end  return p