Module:Documentation

-- This module implements.

-- Get required modules. local getArgs = require('Module:Arguments').getArgs local htmlBuilder = require('Module:HtmlBuilder') local messageBox = require('Module:Message box')

-- Get the config table. local cfg = mw.loadData('Module:Documentation/config')

local p = {}

-- Often-used functions. local gsub = mw.ustring.gsub

-- Helper functions -- -- These are defined as local functions, but are made available in the p -- table for testing purposes.

local function message(cfgKey, expectType, valArray) --	-- Gets a message from the cfg table and formats it if appropriate.	-- The function raises an error if the value from the cfg table is not	-- of the type expectType.	-- If the table valArray is present, strings such as $1, $2 etc. in the	-- message are substituted with values from the table keys [1], [2] etc.	-- For example, if the message cfg.fooMessage had the value 'Foo $2 bar $1.',	-- message('fooMessage', 'string', {'baz', 'qux'}) would return "Foo qux bar baz."	-- local msg = cfg[cfgKey] if expectType and type(msg) ~= expectType then error('message: type error in message cfg.' .. cfgKey .. ' (' .. expectType .. ' expected, got ' .. type(msg) .. ')', 2)	end if not valArray then return msg end

local function getMessageVal(match) match = tonumber(match) return valArray[match] or error('message: no value found for key $' .. match .. ' in message cfg.' .. cfgKey, 4) end

local ret = gsub(msg, '$([1-9][0-9]*)', getMessageVal) return ret end

p.message = message

local function makeWikilink(page, display) if display then return mw.ustring.format('%s', page, display) else return mw.ustring.format('%s', page) end end

p.makeWikilink = makeWikilink

local function makeCategoryLink(cat, sort) local catns = mw.site.namespaces[14].name return makeWikilink(catns .. ':' .. cat, sort) end

p.makeCategoryLink = makeCategoryLink

local function makeUrlLink(url, display) return mw.ustring.format('[%s %s]', url, display) end

p.makeUrlLink = makeUrlLink

local function makeToolbar(...) local ret = {} local lim = select('#', ...) if lim < 1 then return nil end for i = 1, lim do		ret[#ret + 1] = select(i, ...) end return '(' .. table.concat(ret, ' &#124; ') .. ') ' end

p.makeToolbar = makeToolbar

local function err(msg) return string.format(		' %s %s %s',		message('errorPrefix', 'string'),		msg,		makeCategoryLink(message('errorCategory', 'string'))	) end

p.err = err

-- Argument processing

local function makeInvokeFunc(funcName) return function (frame) local args = getArgs(frame, {			valueFunc = function (key, value)				if type(value) == 'string' then					value = value:match('^%s*(.-)%s*$') -- Remove whitespace.					if key == 'heading' or value ~= '' then						return value					else						return nil					end				else					return value				end			end		}) return p[funcName](args) end end

-- Main function

p.main = makeInvokeFunc('_main')

function p._main(args) local env = p.getEnvironment(args) local root = htmlBuilder.create root .wikitext(p.protectionTemplate(env)) .wikitext(p.sandboxNotice(args, env)) -- This div tag is from, but moving it here -- so that we don't have to worry about unclosed tags. .tag('div') .attr('id', message('mainDivId', 'string')) .addClass(message('mainDivClasses', 'string')) .newline .wikitext(p._startBox(args, env)) .wikitext(p._content(args, env)) .tag('div') .css('clear', 'both') -- So right or left floating items don't stick out of the doc box. .newline .done .done .wikitext(p._endBox(args, env)) .newline .wikitext(p.addTrackingCategories(env)) return tostring(root) end

-- Environment settings

function p.getEnvironment(args) -- Returns a table with information about the environment, including the title to use, the subject namespace, etc.	-- This is called from p._main using pcall in case we get any errors from exceeding the expensive function count -- limit, or other perils unknown. --	-- Data includes: -- env.title - the title object of the page we are making documentation for (usually the current title) -- env.subjectSpace - the number of the title's subject namespace. -- env.docspace - the name of the namespace the title puts its documentation in. -- env.templatePage - the name of the template page with no namespace or interwiki prefixes. local env, envFuncs = {}, {}

-- Set up the metatable. If a nil value is called, we call that function in the envFuncs table and memoize it -- in the env table so we don't have to call any of the functions more than once. setmetatable(env, {		__index = function (t, key)			local envFunc = envFuncs[key]			if envFunc then				local val = envFunc				env[key] = val				return val			else				return nil			end		end	})

function envFuncs.title -- The title object for the current page, or a test page passed with args.page. local title local titleArg = args.page if titleArg then title = mw.title.new(titleArg) if not title then error(message('titleArgError', 'string', {titleArg})) end else title = mw.title.getCurrentTitle end return title end

function envFuncs.subjectSpace -- The subject namespace number. return mw.site.namespaces[env.title.namespace].subject.id	end

function envFuncs.docspace -- The name of the documentation namespace. local subjectSpace = env.subjectSpace if subjectSpace == 0 or subjectSpace == 6 or subjectSpace == 8 or subjectSpace == 14 then -- Pages in the Article, File, MediaWiki or Category namespaces must have their -- /doc, /sandbox and /testcases pages in talk space. return mw.site.namespaces[subjectSpace].talk.name else return env.title.subjectNsText end end

function envFuncs.templatePage -- The template page with no namespace or interwiki prefixes. local title = env.title local subpage = title.subpageText if subpage == message('sandboxSubpage', 'string') or subpage == message('testcasesSubpage', 'string') then return title.baseText else return title.text end end

function envFuncs.templateTitle -- The template (or module, etc.) title object. local title = env.title local subpage = title.subpageText local ret if subpage == message('sandboxSubpage', 'string') or subpage == message('testcasesSubpage', 'string') then ret = title.basePageTitle else ret = title end if not ret then error(message('titleArgError', 'string', {titleArg})) end return ret end

function envFuncs.docTitle -- Title object of the /doc subpage. local title = env.title local docname = args[1] -- User-specified doc page. local docpage if docname then docpage = docname else docpage = env.docpageRoot .. '/' .. message('docSubpage', 'string') end return mw.title.new(docpage) end function envFuncs.docpageRoot -- The base page of the /doc, /sandbox, and /testcases subpages. -- For some namespaces this is the talk page, rather than the template page. local title = env.title return (env.docspace or title.nsText) .. ':' .. (env.templatePage or title.text) end function envFuncs.sandboxTitle -- Title object for the /sandbox subpage. local titleArg = env.docpageRoot .. '/' .. message('sandboxSubpage', 'string') local title = mw.title.new(titleArg) if not title then error(message('titleArgError', 'string', {titleArg})) end return title end function envFuncs.testcasesTitle -- Title object for the /testcases subpage. local titleArg = env.docpageRoot .. '/' .. message('testcasesSubpage', 'string') local title = mw.title.new(titleArg) if not title then error(message('titleArgError', 'string', {titleArg})) end return title end function envFuncs.printTitle -- Title object for the /Print subpage. local titleArg = env.templatePage .. '/' .. message('printSubpage', 'string') local title = mw.title.new(titleArg) if not title then error(message('titleArgError', 'string', {titleArg})) end return title end function env:grab(key) local success, val = pcall(function return self[key] end) return success, val end

return env end

-- Auxiliary templates

function p.sandboxNotice(args, env) local sandboxNoticeTemplate = message('sandboxNoticeTemplate', 'string') if not (sandboxNoticeTemplate and env.title.subpageText == message('sandboxSubpage', 'string')) then return nil end local frame = mw.getCurrentFrame local notice = htmlBuilder.create notice .tag('div') .css('clear', 'both') .done .wikitext(frame:expandTemplate{title = sandboxNoticeTemplate, args = {[message('sandboxNoticeLivepageParam')] = args.livepage}}) return tostring(notice) end

function p.protectionTemplate(env) local title = env.title local protectionTemplate = message('protectionTemplate', 'string') if not (protectionTemplate and title.namespace == 10) then -- Don't display the protection template if we are not in the template namespace. return nil end local frame = mw.getCurrentFrame local function getProtectionLevel(protectionType, page) -- Gets the protection level for page, or for the current page if page is not specified. local level = frame:callParserFunction('PROTECTIONLEVEL', protectionType, page) if level ~= '' then return level else return nil -- The parser function returns the blank string if there is no match. end end local prefixedTitle = title.prefixedText if getProtectionLevel('move', prefixedTitle) == 'sysop' or getProtectionLevel('edit', prefixedTitle) then -- The page is full-move protected, or full, template, or semi-protected. return frame:expandTemplate{title = protectionTemplate, args = message('protectionTemplateArgs', 'table')} end return nil end

-- Start box

p.startBox = makeInvokeFunc('_startBox')

function p._startBox(args, env) -- Generate [view][edit][history][purge] or [create] links. local links local content = args.content if not content then -- No need to include the links if the documentation is on the template page itself. local linksData = p.makeStartBoxLinksData(args, env) if type(linksData) == 'table' then links = p.renderStartBoxLinks(linksData) else -- linksData is nil or an error message. return linksData end end -- Generate the start box html. local data = p.makeStartBoxData(args, env, links) if type(data) == 'table' then return p.renderStartBox(data) elseif type(data) == 'string' then -- data is an error message. return data else -- User specified no heading. return nil end end

function p.makeStartBoxLinksData(args, env) local data = {} -- Get title objects. local titleSuccess, title = env:grab('title') if titleSuccess then data.title = title else return err(title) end local docTitleSuccess, docTitle = env:grab('docTitle') if docTitleSuccess then data.docTitle = docTitle else return err(docTitle) end -- View, display, edit, and purge links if /doc exists. data.viewLinkDisplay = message('viewLinkDisplay', 'string') data.editLinkDisplay = message('editLinkDisplay', 'string') data.historyLinkDisplay = message('historyLinkDisplay', 'string') data.purgeLinkDisplay = message('purgeLinkDisplay', 'string') -- Create link if /doc doesn't exist. local preload = args.preload if not preload then if env.subjectSpace == 6 then -- File namespace preload = message('fileDocpagePreload', 'string') else preload = message('docpagePreload', 'string') end end data.preload = preload data.createLinkDisplay = message('createLinkDisplay', 'string') return data end

function p.renderStartBoxLinks(data) -- Render the [view][edit][history][purge] or [create] links. local ret local docTitle = data.docTitle local title = data.title if docTitle.exists then local viewLink = makeWikilink(docTitle.prefixedText, data.viewLinkDisplay) local editLink = makeUrlLink(docTitle:fullUrl{action = 'edit'}, data.editLinkDisplay) local historyLink = makeUrlLink(docTitle:fullUrl{action = 'history'}, data.historyLinkDisplay) local purgeLink = makeUrlLink(title:fullUrl{action = 'purge'}, data.purgeLinkDisplay) ret = '[%s] [%s] [%s] [%s]' ret = ret:gsub('%[', '&#91;') -- Replace square brackets with HTML entities. ret = ret:gsub('%]', '&#93;') ret = mw.ustring.format(ret, viewLink, editLink, historyLink, purgeLink) else ret = makeUrlLink(docTitle:fullUrl{action = 'edit', preload = data.preload}, data.createLinkDisplay) end end

function p.makeStartBoxData(args, env, links) local subjectSpace = env.subjectSpace local data = {} -- Heading local heading = args.heading -- Blank values are not removed. if heading == '' then -- Don't display the start box if the heading arg is defined but blank. return nil end if heading then data.heading = heading elseif subjectSpace == 10 then -- Template namespace data.heading = message('documentationIconWikitext', 'string') .. ' ' .. message('templateNamespaceHeading', 'string') elseif subjectSpace == 828 then -- Module namespace data.heading = message('documentationIconWikitext', 'string') .. ' ' .. message('moduleNamespaceHeading', 'string') elseif subjectSpace == 6 then -- File namespace data.heading = message('fileNamespaceHeading', 'string') else data.heading = message('otherNamespacesHeading', 'string') end -- Heading CSS local headingStyle = args['heading-style'] if headingStyle then data.headingStyleText = headingStyle elseif subjectSpace == 10 then -- We are in the template or template talk namespaces. data.headingFontWeight = 'bold' data.headingFontSize = '125%' else data.headingFontSize = '150%' end -- [view][edit][history][purge] or [create] links. if links then data.linksClass = message('startBoxLinkclasses', 'string') data.linksId = message('startBoxLinkId', 'string') data.links = links end return data end

function p.renderStartBox(data) -- Renders the start box html. local sbox = htmlBuilder.create('div') sbox .css('padding-bottom', '3px') .css('border-bottom', '1px solid #aaa') .css('margin-bottom', '1ex') .newline .tag('span') .cssText(data.headingStyleText) .css('font-weight', data.headingFontWeight) .css('font-size', data.headingFontSize) .wikitext(data.heading) local links = data.links if links then sbox.tag('span') .addClass(data.linksClass) .attr('id', data.linksId) .wikitext(links) end return tostring(sbox) end

-- Documentation content

p.content = makeInvokeFunc('_content')

function p._content(args, env) -- Get the /doc title object local success, docTitle = env:grab('docTitle') if not success then return docTitle -- docTitle is an error message end -- Get the documentation content. local content = args.content if not content and docTitle.exists then local frame = mw.getCurrentFrame content = frame:preprocess('') end -- The line breaks below are necessary so that "=== Headings ===" at the start and end -- of docs are interpreted correctly. return '\n' .. (content or '') .. '\n' end

-- End box

p.endBox = makeInvokeFunc('_endBox')

function p._endBox(args, env) local title = env.title local subjectSpace = env.subjectSpace

-- Argument processing in. local content = args.content local linkBox = args['link box'] -- So "link box=off" works. local docspace = env.docspace local docname = args[1] -- Other docname, if fed. local templatePage = env.templatePage

-- Argument processing in. local docpageRoot = (docspace or title.nsText) .. ':' .. (templatePage or title.text) local docpage if docname then docpage = docname else docpage = docpageRoot .. '/' .. message('docSubpage', 'string') end local docTitle = mw.title.new(docpage) local docExist = docTitle.exists local docnameFed = args[1] and true local sandbox = docpageRoot .. '/' .. message('sandboxSubpage', 'string') local testcases = docpageRoot .. '/' .. message('testcasesSubpage', 'string') templatePage = title.nsText .. ':' .. templatePage

-- Output from -- First, check whether we should output the end box at all. Add the end box by default if the documentation -- exists or if we are in the user, module or template namespaces. if linkBox == 'off' or not (docExist or subjectSpace == 2 or subjectSpace == 828 or subjectSpace == 10) then return nil end

-- Assemble the arguments for. local fmargs = {} fmargs.id = message('fmboxId', 'string') -- Sets 'documentation-meta-data' fmargs.image = message('fmboxImageNone', 'string') -- Sets 'none' fmargs.style = message('fmboxStyle', 'string') -- Sets 'background-color: #ecfcf4' fmargs.textstyle = message('fmboxTextstyle', 'string') -- 'font-style: italic;'

-- Assemble the fmbox text field. local text = '' if linkBox then -- Use custom link box content if it is defined. text = text .. linkBox else text = text .. (p.makeDocPageBlurb(args, env) or '') -- Add links to /sandbox and /testcases when appropriate. if subjectSpace == 2 or subjectSpace == 828 or subjectSpace == 10 then -- We are in the user, module or template namespaces. text = text .. p.makeEndBoxExperimentBlurb(args, env) text = text .. ' '			-- Show the categories text, but not if "content" fed or "docname fed" since then it is unclear where to add the categories. if not content and not docnameFed then local docPathLink = makeWikilink(docpage, message('docLinkDisplay', 'string')) text = text .. message('addCategoriesBlurb', 'string', {docPathLink}) end -- Show the "subpages" link. if subjectSpace ~= 6 then -- Don't show the link in file space. local pagetype if subjectSpace == 10 then pagetype = message('templatePagetype', 'string') elseif subjectSpace == 828 then pagetype = message('modulePagetype', 'string') else pagetype = message('defaultPagetype', 'string') end text = text .. ' ' .. makeWikilink('Special:PrefixIndex/' .. templatePage .. '/', message('subpagesLinkDisplay', 'string', {pagetype})) end -- Show the "print" link if it exists. local printPage = templatePage .. '/' .. message('printSubpage', 'string') local printTitle = mw.title.new(printPage) if printTitle.exists then local printLink = makeWikilink(printPage, message('printLinkDisplay', 'string')) text = text .. ' ' .. message('printBlurb', 'string', {printLink}) .. (message('displayPrintCategory', 'boolean') and makeCategoryLink(message('printCategory', 'string')) or '') end end end fmargs.text = text

-- Return the fmbox output. return messageBox.main('fmbox', fmargs) end

function p.makeCategoriesBlurb(args, env) -- Get the title object. local success, docTitle = env:grab('docTitle') if not success then -- docTitle is the error message. return docTitle end -- Make the blurb. local docPathLink = makeWikilink(docTitle.prefixedText, message('docLinkDisplay', 'string')) return message('addCategoriesBlurb', 'string', {docPathLink}) end

function p.makeDocPageBlurb(args, env) -- Get the title object. local success, docTitle = env:grab('docTitle') if not success then -- docTitle is the error message. return docTitle end -- Make the blurb. local ret if docTitle.exists then -- /doc exists; link to it. local docLink = makeWikilink(docTitle.prefixedText) local editUrl = docTitle:fullUrl{action = 'edit'} local editDisplay = message('editLinkDisplay', 'string') local editLink = makeUrlLink(editUrl, editDisplay) local historyUrl = docTitle:fullUrl{action = 'history'} local historyDisplay = message('historyLinkDisplay', 'string') local historyLink = makeUrlLink(historyUrl, historyDisplay) ret = message('transcludedFromBlurb', 'string', {docLink}) .. ' '			.. makeToolbar(editLink, historyLink) .. ' '	elseif env.subjectSpace == 828 then -- /doc does not exist; ask to create it. local createUrl = docTitle:fullUrl{action = 'edit', preload = message('modulePreload', 'string')} local createDisplay = message('createLinkDisplay', 'string') local createLink = makeUrlLink(createUrl, createDisplay) ret = message('createModuleDocBlurb', 'string', {createLink}) .. ' '	end return ret end

function p.makeEndBoxExperimentBlurb(args, env) -- Renders the text "Editors can experiment in this template's sandbox (edit | diff) and testcases (edit) pages." local subjectSpace = env.subjectSpace local templatePage = env.templatePage -- Get title objects. local templateSuccess, templateTitle = env:grab('templateTitle') if not templateSuccess then return err(templateTitle) end local sandboxSuccess, sandboxTitle = env:grab('sandboxTitle') if not sandboxSuccess then return err(sandboxTitle) end local testcasesSuccess, testcasesTitle = env:grab('testcasesTitle') if not testcasesSuccess then return err(testcasesTitle) end -- Make links. local sandboxLinks, testcasesLinks if sandboxTitle.exists then local sandboxPage = sandboxTitle.prefixedText local sandboxDisplay = message('sandboxLinkDisplay', 'string') local sandboxLink = makeWikilink(sandboxPage, sandboxDisplay) local sandboxEditUrl = sandboxTitle:fullUrl{action = 'edit'} local sandboxEditDisplay = message('sandboxEditLinkDisplay', 'string') local sandboxEditLink = makeUrlLink(sandboxEditUrl, sandboxEditDisplay) local compareUrl = mw.uri.fullUrl('Special:ComparePages', {page1 = templateTitle.prefixedText, page2 = sandboxPage}) compareUrl = tostring(compareUrl) local compareDisplay = message('compareLinkDisplay', 'string') local compareLink = makeUrlLink(compareUrl, compareDisplay) sandboxLinks = sandboxLink .. ' ' .. makeToolbar(sandboxEditLink, compareLink) else local sandboxPreload if subjectSpace == 828 then sandboxPreload = message('moduleSandboxPreload', 'string') else sandboxPreload = message('templateSandboxPreload', 'string') end local sandboxCreateUrl = sandboxTitle:fullUrl{action = 'edit', preload = sandboxPreload} local sandboxCreateDisplay = message('sandboxCreateLinkDisplay', 'string') local sandboxCreateLink = makeUrlLink(sandboxCreateUrl, sandboxCreateDisplay) local mirrorSummary = message('mirrorEditSummary', 'string', {makeWikilink(templatePage)}) local mirrorUrl = sandboxTitle:fullUrl{action = 'edit', preload = templatePage, summary = mirrorSummary} local mirrorDisplay = message('mirrorLinkDisplay', 'string') local mirrorLink = makeUrlLink(mirrorUrl, mirrorDisplay) sandboxLinks = message('sandboxLinkDisplay', 'string') .. ' ' .. makeToolbar(sandboxCreateLink, mirrorLink) end if testcasesTitle.exists then local testcasesPage = testcasesTitle.prefixedText local testcasesDisplay = message('testcasesLinkDisplay', 'string') local testcasesLink = makeWikilink(testcasesPage, testcasesDisplay) local testcasesEditUrl = testcasesTitle:fullUrl{action = 'edit'} local testcasesEditDisplay = message('testcasesEditLinkDisplay', 'string') local testcasesEditLink = makeUrlLink(testcasesEditUrl, testcasesEditDisplay) testcasesLinks = testcasesLink .. ' ' .. makeToolbar(testcasesEditLink) else local testcasesPreload if subjectSpace == 828 then testcasesPreload = message('moduleTestcasesPreload', 'string') else testcasesPreload = message('templateTestcasesPreload', 'string') end local testcasesCreateUrl = testcasesTitle:fullUrl{action = 'edit', preload = testcasesPreload} local testcasesCreateDisplay = message('testcasesCreateLinkDisplay', 'string') local testcasesCreateLink = makeUrlLink(testcasesCreateUrl, testcasesCreateDisplay) testcasesLinks = message('testcasesLinkDisplay', 'string') .. ' ' .. makeToolbar(testcasesCreateLink) end local messageName if subjectSpace == 828 then messageName = 'experimentBlurbModule' else messageName = 'experimentBlurbTemplate' end return message(messageName, 'string', {sandboxLinks, testcasesLinks}) end

-- Tracking categories

function p.addTrackingCategories(env) -- Check if is transcluded on a /doc or /testcases page. local title = env.title local ret = '' local subpage = title.subpageText if message('displayStrangeUsageCategory', 'boolean') and (subpage == message('docSubpage', 'string') or subpage == message('testcasesSubpage', 'string')) then local sort = (title.namespace == 0 and message('strangeUsageCategoryMainspaceSort', 'string') or '') .. title.prefixedText -- Sort on namespace. ret = ret .. makeCategoryLink(message('strangeUsageCategory', 'string'), sort) end return ret end

return p