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

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 -- Make this function available for testing.

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

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

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

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 -- Make this function available for testing.

local function err(msg) return string.format(		' Module:Documentation error: %s %s',		msg,		makeCategoryLink('Documentation template invocations with errors')	) end

-- Argument processing

local function makeInvokeFunc(funcName) return function (frame) local headingArg = message('headingArg', 'string') local args = getArgs(frame, {			valueFunc = function (key, value)				if type(value) == 'string' then					value = value:match('^%s*(.-)%s*$') -- Remove whitespace.					if key == headingArg 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	})

-- Get the title. function envFuncs.title local title local titleArg = args[message('titleArg', 'string')] 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

-- Get the subject namespace number. function envFuncs.subjectSpace return mw.site.namespaces[env.title.namespace].subject.id	end -- Get the name of the documentation namespace. function envFuncs.docspace 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 -- Get the template page with no namespace or interwiki prefixes. function envFuncs.templatePage 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 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[message('livepageArg', 'string')]}}) 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) local title = env.title

-- Arg processing from. local preload = args[message('preloadArg', 'string')] -- Allow custom preloads. local heading = args[message('headingArg', 'string')] -- Blank values are not removed. local headingStyle = args[message('headingStyleArg', 'string')] local content = args[message('contentArg', 'string')] local docspace = env.docspace local docname = args[1] -- Other docname, if fed. local templatePage = env.templatePage

-- Arg processing from. local docpage if docname then docpage = docname else local namespace = docspace or title.nsText local pagename = templatePage or title.text docpage = namespace .. ':' .. pagename .. '/' .. message('docSubpage', 'string') end local docTitle = mw.title.new(docpage) local docExist = docTitle.exists -- Output from.

-- First, check the heading parameter. if heading == '' then -- Heading is defined but blank, so do nothing. return nil end

-- Build the start box div. local sbox = htmlBuilder.create('div') sbox .css('padding-bottom', '3px') .css('border-bottom', '1px solid #aaa') .css('margin-bottom', '1ex') .newline

-- Make the heading. local hspan = sbox.tag('span') if headingStyle then hspan.cssText(headingStyle) elseif subjectSpace == 10 then -- We are in the template or template talk namespaces. hspan .css('font-weight', 'bold') .css('fond-size', '125%') else hspan.css('font-size', '150%') end if heading then -- "heading" has data. hspan.wikitext(heading) elseif subjectSpace == 10 then -- Template namespace hspan.wikitext(message('documentationIconWikitext', 'string') .. ' ' .. message('templateNamespaceHeading', 'string')) elseif subjectSpace == 828 then -- Module namespace hspan.wikitext(message('documentationIconWikitext', 'string') .. ' ' .. message('moduleNamespaceHeading', 'string')) elseif subjectSpace == 6 then -- File namespace hspan.wikitext(message('fileNamespaceHeading', 'string')) else hspan.wikitext(message('otherNamespacesHeading', 'string')) end

-- Add the [view][edit][history][purge] or [create] links. -- Check for the content parameter first, as we don't need the links if the documentation -- content is being entered directly onto the template page. if not content then local lspan = sbox.tag('span') -- lspan is short for "link span". lspan .addClass(message('startBoxLinkclasses', 'string')) .attr('id', message('startBoxLinkId', 'string')) if docExist then local viewLink = makeWikilink(docpage, message('viewLinkDisplay', 'string')) local editLink = makeUrlLink(docTitle:fullUrl{action = 'edit'}, message('editLinkDisplay', 'string')) local historyLink = makeUrlLink(docTitle:fullUrl{action = 'history'}, message('historyLinkDisplay', 'string')) local purgeLink = makeUrlLink(title:fullUrl{action = 'purge'}, message('purgeLinkDisplay', 'string')) local text = '[%s] [%s] [%s] [%s]' text = text:gsub('%[', '&#91;') -- Replace square brackets with HTML entities. text = text:gsub('%]', '&#93;') lspan.wikitext(mw.ustring.format(text, viewLink, editLink, historyLink, purgeLink)) else if not preload then if subjectSpace == 6 then -- File namespace preload = message('fileDocpagePreload', 'string') else preload = message('docpagePreload', 'string') end end lspan.wikitext(makeUrlLink(docTitle:fullUrl{action = 'edit', preload = preload}, message('createLinkDisplay', 'string'))) end end

return tostring(sbox) end

-- Documentation content

p.content = makeInvokeFunc('_content')

function p._content(args, env) local content = args[message('contentArg', 'string')] if not content then local docpage = args[1] if docpage and mw.title.new(docpage).exists then local frame = mw.getCurrentFrame content = frame:preprocess('') else docpage = env.docspace .. ':' .. env.templatePage .. '/' .. message('docSubpage', 'string') if mw.title.new(docpage).exists then local frame = mw.getCurrentFrame content = frame:preprocess('') end end 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[message('contentArg', 'string')] local linkBox = args[message('linkBoxArg', 'string')] -- 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 == message('linkBoxOff', 'string') or not (docExist or subjectSpace == 2 or subjectSpace == 828 or subjectSpace == 10) then return nil end

-- Assemble the arguments for. local fmargs = {} fmargs[message('fmboxIdParam', 'string')] = message('fmboxId', 'string') -- Sets fmargs.id = 'documentation-meta-data' fmargs[message('fmboxImageParam', 'string')] = message('fmboxImageNone', 'string') -- Sets fmargs.image = 'none' fmargs[message('fmboxStyleParam', 'string')] = message('fmboxStyle', 'string') -- Sets fmargs.style = 'background-color: #ecfcf4' fmargs[message('fmboxTextstyleParam', 'string')] = message('fmboxTextstyle', 'string') -- Sets fmargs.textstyle = '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 if docExist then -- /doc exists; link to it. local docLink = makeWikilink(docpage) local editLink = makeUrlLink(docTitle:fullUrl{action = 'edit'}, message('editLinkDisplay', 'string')) local historyLink = makeUrlLink(docTitle:fullUrl{action = 'history'}, message('historyLinkDisplay', 'string')) text = text .. message('transcludedFromBlurb', 'string', {docLink}) .. ' ' .. makeToolbar(editLink, historyLink) .. ' '		elseif subjectSpace == 828 then -- /doc does not exist; ask to create it. local createLink = makeUrlLink(docTitle:fullUrl{action = 'edit', preload = message('modulePreload', 'string')}, message('createLinkDisplay', 'string')) text = text .. message('createModuleDocBlurb', 'string', {createLink}) .. ' '		end -- 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. local sandboxLinks, testcasesLinks local pagePossessive = subjectSpace == 828 and message('modulePossessive', 'string') or message('templatePossessive', 'string') local sandboxTitle = mw.title.new(sandbox) if sandboxTitle.exists then local sandboxLink = makeWikilink(sandbox, message('sandboxLinkDisplay', 'string')) local sandboxEditLink = makeUrlLink(sandboxTitle:fullUrl{action = 'edit'}, message('sandboxEditLinkDisplay', 'string')) local compareLink = makeUrlLink(mw.title.new('Special:ComparePages'):fullUrl{page1 = templatePage, page2 = sandbox}, message('compareLinkDisplay', 'string')) sandboxLinks = sandboxLink .. ' ' .. makeToolbar(sandboxEditLink, compareLink) else local sandboxPreload = subjectSpace == 828 and message('moduleSandboxPreload', 'string') or message('templateSandboxPreload', 'string') local sandboxCreateLink = makeUrlLink(sandboxTitle:fullUrl{action = 'edit', preload = sandboxPreload}, message('sandboxCreateLinkDisplay', 'string')) local mirrorSummary = message('mirrorEditSummary', 'string', {makeWikilink(templatePage)}) local mirrorLink = makeUrlLink(sandboxTitle:fullUrl{action = 'edit', preload = templatePage, summary = mirrorSummary}, message('mirrorLinkDisplay', 'string')) sandboxLinks = message('sandboxLinkDisplay', 'string') .. ' ' .. makeToolbar(sandboxCreateLink, mirrorLink) end local testcaseTitle = mw.title.new(testcases) if testcaseTitle.exists then local testcasesLink = makeWikilink(testcases, message('testcasesLinkDisplay', 'string')) local testcasesEditLink = makeUrlLink(testcaseTitle:fullUrl{action = 'edit'}, message('testcasesEditLinkDisplay', 'string')) testcasesLinks = testcasesLink .. ' ' .. makeToolbar(testcasesEditLink) else local testcasesPreload = subjectSpace == 828 and message('moduleTestcasesPreload', 'string') or message('templateTestcasesPreload', 'string') local testcasesCreateLink = makeUrlLink(testcaseTitle:fullUrl{action = 'edit', preload = testcasesPreload}, message('testcasesCreateLinkDisplay', 'string')) testcasesLinks = message('testcasesLinkDisplay', 'string') .. ' ' .. makeToolbar(testcasesCreateLink) end text = text .. message('experimentBlurb', 'string', {pagePossessive, sandboxLinks, testcasesLinks}) .. ' '			-- 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

-- 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