Module:Redirect hatnote

-- -- This module produces a "redirect" hatnote. It looks like this: -- '"X" redirects here. For other uses, see Y.' -- It implements the template. --

local mHatnote = require('Module:Hatnote') local mHatList = require('Module:Hatnote list') local mArguments --lazily initialize local libraryUtil = require('libraryUtil') local checkType = libraryUtil.checkType local checkTypeMulti = libraryUtil.checkTypeMulti

local p = {}

local function getTitle(...) local success, titleObj = pcall(mw.title.new, ...) if success then return titleObj else return nil end end

function p.redirect(frame) mArguments = require('Module:Arguments') local args = mArguments.getArgs(frame, {parentOnly=true}) --Get number of redirects local numRedirects = tonumber(frame.args[1]) or 1 -- Create the options table. local options = {} options.selfref = args.selfref return p._redirect(args, numRedirects, options) end

function p._redirect(args, numRedirects, options, currentTitle, redirectTitle, targetTitle) -- Validate the input. Don't bother checking currentTitle, redirectTitle or -- targetTitle, as they are only used in testing. checkType('_redirect', 1, args, 'table') checkType('_redirect', 2, numRedirects, 'number', true) numRedirects = numRedirects or 1 checkType('_redirect', 3, options, 'table', true) options = options or {} currentTitle = currentTitle or mw.title.getCurrentTitle -- Get the table of redirects local redirect = {} for i = 1, numRedirects do -- Return an error if a redirect parameter is missing. if not args[i] then return mHatnote.makeWikitextError(				'missing redirect parameter',				'Template:Redirect#Errors',				args.category			) end redirect[i] = args[i] end -- Generate the text. local formattedRedirect = {} for k,v in pairs(redirect) do formattedRedirect[k] = '"' .. v .. '"' end local text = { mHatList.andList(formattedRedirect) .. ' ' .. (#redirect == 1 and 'redirects' or 'redirect') .. ' here.', mHatList._forSee(args, #redirect + 1, {title = redirect[1], extratext = args.text}) }	text = table.concat(text, ' ') -- Functionality for adding categories local categoryTable = {} function addCategory(cat) if cat and cat ~= '' then -- Add by index to avoid duplicates categoryTable[string.format('', cat)] = true end end --Generate tracking categories local mhOptions = {} for k,v in pairs(redirect) do		-- We don't need a tracking category if the template invocation has been -- copied directly from the docs, or if we aren't in main- or category-space. if not v:find('^REDIRECT%d*$') and v ~= 'TERM' -- and currentTitle.namespace == 0 or currentTitle.namespace == 14 then redirectTitle = redirectTitle or getTitle(v) if not redirectTitle or not redirectTitle.exists then addCategory('Missing redirects') elseif not redirectTitle.isRedirect then addCategory('Articles with redirect hatnotes needing review') else local mRedirect = require('Module:Redirect') local target = mRedirect.getTarget(redirectTitle) targetTitle = targetTitle or target and getTitle(target) if targetTitle and targetTitle ~= currentTitle then addCategory('Articles with redirect hatnotes needing review') end end end

-- Generate the options to pass to Module:Hatnote. if currentTitle.namespace == 0 and not mhOptions.selfref and redirectTitle and redirectTitle.namespace ~= 0 then -- We are on a mainspace page, and the hatnote starts with something -- like "Computer Knowledge:Foo redirects here", so automatically label it as -- a self-reference. mhOptions.selfref = true else mhOptions.selfref = options.selfref end end --concatenate all the categories local category = '' for k,v in pairs(categoryTable) do category = category .. k	end

return mHatnote._hatnote(text, mhOptions) .. category end return p