Module:Category handler/shared

This module is subject to page protection. It is a highly visible module in use by a very large number of pages, or is substituted very frequently. Because vandalism or mistakes would affect many pages, and even trivial editing might cause substantial load on the servers, it is protected from editing.

This Lua module is used in system messages, and on approximately ༤,༦༤༠,༠༠༠ pages, or roughly 110872% of all pages.
Changes to it can cause immediate changes to the Wikipedia user interface.
To avoid major disruption and server load, any changes should be tested in the module's /sandbox or /testcases subpages, or in your own module sandbox. The tested changes can be added to this page in a single edit. Please discuss changes on the talk page before implementing them.

This module depends on the following other modules:

Module:Namespace detect/data

Usage

{{#invoke:Category handler|function_name}}

-- This module contains shared functions used by [[Module:Category handler]]
-- and its submodules.

local p = {}

function p.matchesBlacklist(page, blacklist)
	for i, pattern in ipairs(blacklist) do
		local match = mw.ustring.match(page, pattern)
		if match then
			return true
		end
	end
	return false
end

function p.getParamMappings(useLoadData)
	local dataPage = 'Module:Namespace detect/data'
	if useLoadData then
		return mw.loadData(dataPage).mappings
	else
		return require(dataPage).mappings
	end
end

function p.getNamespaceParameters(titleObj, mappings)
	-- We don't use title.nsText for the namespace name because it adds
	-- underscores.
	local mappingsKey
	if titleObj.isTalkPage then
		mappingsKey = 'talk'
	else
		mappingsKey = mw.site.namespaces[titleObj.namespace].name
	end
	mappingsKey = mw.ustring.lower(mappingsKey)
	return mappings[mappingsKey] or {}
end

return p