Module:Check for deprecated parameters

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Module:Check for deprecated parameters may be appended to a template to check for uses of deprecated parameters. It will place the page in a specific category, and display a preview message, when it finds deprecated parameter uses.

Note: due to the nature of deprecations, this module will often have no templates implementing it.

Usage

{{#invoke:Check for deprecated parameters|check
| category = [[Category:category_name|_VALUE_]]
| old_param1 = new_param1 
| old_param2 = new_param2
| ....
| old_paramN = new_paramN
}}

By default, this module will flag empty uses of deprecated parameters. To turn this off, set |ignoreblank=yes.

See also

• Category:Deprecated parameters
• Module:Params – for complex operations involving parameters
• Module:Check for unknown parameters
• Module:Check for clobbered parameters – module that checks for conflicting parameters

The above documentation is transcluded from Module:Check for deprecated parameters/doc. (edit | history)
Editors can experiment in this module's sandbox (edit | diff) and testcases (create) pages.
Subpages of this module.

-- 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
-- on the list
local p = {}

local function trim(s)
	return s:match('^%s*(.-)%s*$')
end

local function isnotempty(s)
	return s and trim(s) ~= ''
end

function p.check (frame)
	local args = frame.args
	local pargs = frame:getParent().args
	local ignoreblank = isnotempty(frame.args['ignoreblank'])
	local showblankpos = isnotempty(frame.args['showblankpositional'])
	local knownargs = {}
	local deprecated = frame.args['deprecated'] or 'Found _VALUE_, '
	local preview = frame.args['preview']

	local dep_values = {}
	local values = {}
	local res = {}
	local regexps = {}

	-- create the table of deprecated values and their matching new value
	for k, v in pairs(args) do
		if k == 'ignoreblank' or k == 'preview' or k == 'deprecated' then else
			dep_values[k] = v
		end
	end
	
	if isnotempty(preview) then 
		preview = '<div class="hatnote" style="color:red"><strong>Warning:</strong> ' .. preview .. ' (this message is shown only in preview).</div>'
	elseif preview == nil then
		preview = deprecated
	end

	-- loop over the parent args, and make sure they are on the list
	for k, v in pairs(pargs) do
		mw.log(k..'---'..v)
		if dep_values[k] then
			table.insert(values, k)
		end
		
		-- if type(k) == 'string' and knownargs[k] == nil then
		-- 	local knownflag = false
		-- 	for i, 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
		-- 		k = mw.ustring.gsub(k, '[^%w\-_ ]', '?')
		-- 		table.insert(values, k)
		-- 	end
		-- elseif type(k) == 'number' and 
		-- 	knownargs[tostring(k)] == nil and
		-- 	( showblankpos or isnotempty(v) )
		-- then
		-- 	local vlen = mw.ustring.len(v)
		-- 	v = mw.ustring.sub(v, 1, (vlen < 25) and vlen or 25) 
		-- 	v = mw.ustring.gsub(v, '[^%w\-_ ]', '?')
		-- 	table.insert(values, k .. ' = ' .. v .. ((vlen >= 25) and ' ...' or ''))
		-- end
		mw.logObject(values)
	end

	-- add resuls to the output tables
	if #values > 0 then
		if frame:preprocess( "{{REVISIONID}}" ) == "" then
			deprecated = preview
		end
		for k, 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
			local r =  deprecated:gsub('_VALUE_', v)
			table.insert(res, r)
		end
	end

	return table.concat(res)
end

return p