Module:Hatnote

--                             Module:Hatnote                                -- --                                                                           -- -- This module produces hatnote links and links to related articles. It      -- -- implements the and  meta-templates and includes -- -- helper functions for other Lua hatnote modules. --

local libraryUtil = require('libraryUtil') local checkType = libraryUtil.checkType local checkTypeForNamedArg = libraryUtil.checkTypeForNamedArg local mArguments -- lazily initialise Module:Arguments local yesno -- lazily initialise Module:Yesno local formatLink -- lazily initialise Module:Format link ._formatLink

local p = {}

-- Helper functions

local curNs = mw.title.getCurrentTitle.namespace p.missingTargetCat = --Default missing target category, exported for use in related modules ((curNs == 0) or (curNs == 14)) and 'Articles with hatnote templates targeting a nonexistent page' or nil

local function getArgs(frame) -- Fetches the arguments from the parent frame. Whitespace is trimmed and -- blanks are removed. mArguments = require('Module:Arguments') return mArguments.getArgs(frame, {parentOnly = true}) end

local function removeInitialColon(s) -- Removes the initial colon from a string, if present. return s:match('^:?(.*)') end

function p.findNamespaceId(link, removeColon) -- Finds the namespace id (namespace number) of a link or a pagename. This -- function will not work if the link is enclosed in double brackets. Colons -- are trimmed from the start of the link by default. To skip colon -- trimming, set the removeColon parameter to false. checkType('findNamespaceId', 1, link, 'string') checkType('findNamespaceId', 2, removeColon, 'boolean', true) if removeColon ~= false then link = removeInitialColon(link) end local namespace = link:match('^(.-):') if namespace then local nsTable = mw.site.namespaces[namespace] if nsTable then return nsTable.id		end end return 0 end

function p.makeWikitextError(msg, helpLink, addTrackingCategory, title) -- Formats an error message to be returned to wikitext. If	-- addTrackingCategory is not false after being returned from -- Module:Yesno, and if we are not on a talk page, a tracking category -- is added. checkType('makeWikitextError', 1, msg, 'string') checkType('makeWikitextError', 2, helpLink, 'string', true) yesno = require('Module:Yesno') title = title or mw.title.getCurrentTitle -- Make the help link text. local helpText if helpLink then helpText = ' (help)' else helpText = '' end -- Make the category text. local category if not title.isTalkPage -- Don't categorise talk pages and title.namespace ~= 2 -- Don't categorise userspace and yesno(addTrackingCategory) ~= false -- Allow opting out then category = 'Hatnote templates with errors' category = mw.ustring.format(			'%s:%s',			mw.site.namespaces[14].name,			category		) else category = '' end return mw.ustring.format(		' Error: %s%s. %s',		msg,		helpText,		category	) end

function p.disambiguate(page, disambiguator) -- Formats a page title with a disambiguation parenthetical, -- i.e. "Example" → "Example (disambiguation)". checkType('disambiguate', 1, page, 'string') checkType('disambiguate', 2, disambiguator, 'string', true) disambiguator = disambiguator or 'disambiguation' return mw.ustring.format('%s (%s)', page, disambiguator) end

function p.defaultClasses(inline) -- Provides the default hatnote classes as a space-separated string; useful -- for hatnote-manipulation modules like Module:Hatnote group. return (inline == 1 and 'hatnote-inline' or 'hatnote') .. ' ' ..		'navigation-not-searchable' end

-- Hatnote -- -- Produces standard hatnote text. Implements the template.

function p.hatnote(frame) local args = getArgs(frame) local s = args[1] if not s then return p.makeWikitextError(			'no text specified',			'Template:Hatnote#Errors',			args.category		) end return p._hatnote(s, {		extraclasses = args.extraclasses,		selfref = args.selfref	}) end

function p._hatnote(s, options) checkType('_hatnote', 1, s, 'string') checkType('_hatnote', 2, options, 'table', true) options = options or {} local inline = options.inline local hatnote = mw.html.create(inline == 1 and 'span' or 'div') local extraclasses if type(options.extraclasses) == 'string' then extraclasses = options.extraclasses end

hatnote :attr('role', 'note') :addClass(p.defaultClasses(inline)) :addClass(extraclasses) :addClass(options.selfref and 'selfref' or nil) :wikitext(s)

return mw.getCurrentFrame:extensionTag{ name = 'templatestyles', args = { src = 'Module:Hatnote/styles.css' } } .. tostring(hatnote) end

return p