मोड्युल:Pagetype

This module is used to detect the page type of a given page. It detects redirect pages automatically and is highly customisable. It can be used on its own or as a meta-module to create other page-type-detection templates. This module can also be accessed using {{pagetype}}.

Syntax

Basic usage

{{#invoke:pagetype|main}}

All parameters

{{#invoke:pagetype|main
| page              = 
| defaultns         = 
| main              = 
| user              = 
| wikipedia         = 
| project           = 
| wp                = 
| file              = 
| image             = 
| mediawiki         = 
| template          = 
| help              = 
| category          = 
| portal            = 
| book              = 
| draft             = 
| education program = 
| timedtext         = 
| module            = 
| topic             = 
| special           = 
| media             = 
| talk              = 
| redirect          = 
| dab               = 
| na                = 
| other             = 
}}

Basic usage

For simple detection of the page type of the current page, use the default settings:

{{#invoke:pagetype|main}}

That will produce the following results, depending on the page type or the namespace:

Page type / namespace	Output
Redirects (in any namespace)	redirect
Main namespace	लेख
File namespace	चित्र
Template namespace	ढाँचा
Category namespace	श्रेणी
Module namespace	मोड्युल
Book namespace	पुस्तक
Other namespaces	पृष्ठ

If the module is used on a talk page, it will detect the page type for the corresponding subject page.

Example

Code	Result
{{#invoke:pagetype|main}}	module

Page parameter

---

--------------------------------------------------------------------------------
--                                                                            --
--                                PAGETYPE                                    --
--                                                                            --
--      This is a meta-module intended to replace {{pagetype}} and similar    --
--      templates. It automatically detects namespaces, and allows for a      --
--      great deal of customisation. It can easily be ported to other         --
--      wikis by changing the values in the [[Module:Pagetype/config]].       --
--                                                                            --
--------------------------------------------------------------------------------

-- Load config.
local cfg = mw.loadData('Module:Pagetype/config')

-- Load required modules.
local getArgs = require('Module:Arguments').getArgs
local yesno = require('Module:Yesno')
local nsDetectModule = require('Module:Namespace detect')
local nsDetect = nsDetectModule._main
local getParamMappings = nsDetectModule.getParamMappings
local getPageObject = nsDetectModule.getPageObject

local p = {}

local function shallowCopy(t)
	-- Makes a shallow copy of a table.
	local ret = {}
	for k, v in pairs(t) do
		ret[k] = v
	end
	return ret
end

local function checkPagetypeInput(namespace, val)
	-- Checks to see whether we need the default value for the given namespace,
	-- and if so gets it from the pagetypes table.
	-- The yesno function returns true/false for "yes", "no", etc., and returns
	-- val for other input.
	local ret = yesno(val, val)
	if ret and type(ret) ~= 'string' then
		ret = cfg.pagetypes[namespace]
	end
	return ret
end

local function getPagetypeFromClass(class, param, aliasTable, default)
	-- Gets the pagetype from a class specified from the first positional
	-- parameter.
	param = yesno(param, param)
	if param ~= false then -- No check if specifically disallowed.
		for _, alias in ipairs(aliasTable) do
			if class == alias then
				if type(param) == 'string' then
					return param
				else
					return default
				end
			end
		end
	end
end

local function getNsDetectValue(args)
	-- Builds the arguments to pass to [[Module:Namespace detect]] and returns
	-- the result.

	-- Get the default values.
	local ndArgs = {}
	local defaultns = args[cfg.defaultns]
	if defaultns == cfg.defaultnsAll then
		ndArgs = shallowCopy(cfg.pagetypes)
	else
		local defaultnsArray
		if defaultns == cfg.defaultnsExtended then
			defaultnsArray = cfg.extendedNamespaces
		elseif defaultns == cfg.defaultnsNone then
			defaultnsArray = {}
		else
			defaultnsArray = cfg.defaultNamespaces
		end
		for _, namespace in ipairs(defaultnsArray) do
			ndArgs[namespace] = cfg.pagetypes[namespace]
		end
	end

	--[[
	-- Add custom values passed in from the arguments. These overwrite the
	-- defaults. The possible argument names are fetched from
	-- Module:Namespace detect automatically in case new namespaces are
	-- added. Although we accept namespace aliases as parameters, we only pass
	-- the local namespace name as a parameter to Module:Namespace detect.
	-- This means that the "image" parameter can overwrite defaults for the
	-- File: namespace, which wouldn't work if we passed the parameters through
	-- separately.
	--]]
	local mappings = getParamMappings()
	for ns, paramAliases in pairs(mappings) do
		-- Copy the aliases table, as # doesn't work with tables returned from
		-- mw.loadData.
		paramAliases = shallowCopy(paramAliases)
		local paramName = paramAliases[1]
		-- Iterate backwards along the array so that any values for the local
		-- namespace names overwrite those for namespace aliases.
		for i = #paramAliases, 1, -1 do
			local paramAlias = paramAliases[i]
			local ndArg = checkPagetypeInput(paramAlias, args[paramAlias])
			if ndArg == false then
				-- If any arguments are false, convert them to nil to protect
				-- against breakage by future changes to
				-- [[Module:Namespace detect]].
				ndArgs[paramName] = nil
			elseif ndArg then
				ndArgs[paramName] = ndArg
			end
		end
	end
	-- Check for disambiguation-class and N/A-class pages in mainspace.
	if ndArgs.main then
		local class = args[1]
		if type(class) == 'string' then
			-- Put in lower case so e.g. "Dab" and "dab" will both match.
			class = mw.ustring.lower(class)
		end
		local dab = getPagetypeFromClass(
			class,
			args[cfg.dab],
			cfg.dabAliases,
			cfg.dabDefault
		)
		if dab then
			ndArgs.main = dab
		else
			local na = getPagetypeFromClass(
				class,
				args[cfg.na],
				cfg.naAliases,
				cfg.naDefault
			)
			if na then
				ndArgs.main = na
			end
		end
	end
	-- If there is no talk value specified, use the corresponding subject 
	-- namespace for talk pages.
	if not ndArgs.talk then
		ndArgs.subjectns = true
	end
	-- Add the fallback value. This can also be customised, but it cannot be
	-- disabled.
	local other = args[cfg.other]
	-- We will ignore true/false/nil results from yesno here, but using it
	-- anyway for consistency.
	other = yesno(other, other)
	if type(other) == 'string' then
		ndArgs.other = other
	else
		ndArgs.other = cfg.otherDefault
	end
	-- Allow custom page values.
	ndArgs.page = args.page
	return nsDetect(ndArgs)
end

local function detectRedirects(args)
	local redirect = args[cfg.redirect]
	-- The yesno function returns true/false for "yes", "no", etc., and returns
	-- redirect for other input.
	redirect = yesno(redirect, redirect)
	if redirect == false then
		-- Detect redirects unless they have been explicitly disallowed with
		-- "redirect=no" or similar.
		return
	end
	local pageObject = getPageObject(args.page)
	-- If we are using subject namespaces elsewhere, do so here as well.
	if pageObject
		and not yesno(args.talk, true)
		and args[cfg.defaultns] ~= cfg.defaultnsAll
	then
		pageObject = getPageObject(
			pageObject.subjectNsText .. ':' .. pageObject.text
		)
	end
	-- Allow custom values for redirects.
	if pageObject and pageObject.isRedirect then
		if type(redirect) == 'string' then
			return redirect
		else
			return cfg.redirectDefault
		end
	end
end

function p._main(args)
	local redirect = detectRedirects(args)
	if redirect then
		return redirect
	else
		return getNsDetectValue(args)
	end
end

function p.main(frame)
	local args = getArgs(frame)
	return p._main(args)
end

return p