查看“︁Module:Documentation”︁的源代码

-- Module:Documentation
-- 以 enwiki 版为基础框架，整合 zhwiki 精选改进
-- 改进项：中文括号 / doc-subpage 判断 / pagetypee 变体提示 / 中文排版 / -{}-变体支持
-- 去掉了 protectionTemplate（MW 1.43 核心自带锁图标）

local getArgs = require('Module:Arguments').getArgs
local messageBox = require('Module:Message box')

local cfg = mw.loadData('Module:Documentation/config')
local p = {}

local ugsub = mw.ustring.gsub
local format = mw.ustring.format

----------------------------------------------------------------------------
-- Helper functions
----------------------------------------------------------------------------

local function message(cfgKey, valArray, expectType)
	--[[
	-- Gets a message from the cfg table and formats it if appropriate.
	-- Config is plain zh-hans, no -{}- processing needed.
	--]]
	local msg = cfg[cfgKey]
	expectType = expectType or 'string'
	if type(msg) ~= expectType then
		error('message: type error in cfg.' .. cfgKey .. ' (' .. expectType .. ' expected, got ' .. type(msg) .. ')', 2)
	end
	if not valArray then
		if expectType == 'string' then
			-- Process -{}- variants even without substitution
			return mw.getCurrentFrame():preprocess(msg)
		end
		return msg
	end

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

	msg = ugsub(msg, '$([1-9][0-9]*)', getMessageVal)
	-- Process -{}- variant syntax
	msg = mw.getCurrentFrame():preprocess(msg)
	return msg
end

p.message = message

local function makeWikilink(page, display)
	if display then
		return format('[[%s|%s]]', page, display)
	else
		return 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 format('[%s %s]', url, display)
end

p.makeUrlLink = makeUrlLink

local function makeToolbar(...)
	-- 'documentation-toolbar'
	local ret = {}
	local lim = select('#', ...)
	if lim < 1 then
		return nil
	end
	for i = 1, lim do
		local v = select(i, ...)
		if v then
			ret[#ret + 1] = v
		end
	end
	if #ret == 0 then return nil end
	return format(
		'<span class="%s">（%s）</span>',
		message('toolbar-class'),
		table.concat(ret, ' &#124; ')
	)
end

p.makeToolbar = makeToolbar

----------------------------------------------------------------------------
-- 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*$')
					if key == 'heading' or value ~= '' then
						return value
					else
						return nil
					end
				else
					return value
				end
			end
		})
		return p[funcName](args)
	end
end

----------------------------------------------------------------------------
-- Entry points
----------------------------------------------------------------------------

function p.nonexistent(frame)
	if mw.title.getCurrentTitle().subpageText == 'testcases' then
		return frame:expandTemplate{title = 'module test cases notice'}
	else
		return p.main(frame)
	end
end

p.main = makeInvokeFunc('_main')

function p._main(args)
	--[[
	-- This function defines logic flow for the module.
	-- @args - table of arguments passed by the user
	--]]
	local env = p.getEnvironment(args)
	local root = mw.html.create()
	root
		:wikitext(p._getModuleWikitext(args, env))
		:wikitext(p.sandboxNotice(args, env))
		:tag('div')
			-- 'documentation-container'
			:addClass(message('container'))
			:attr('role', 'complementary')
			:attr('aria-labelledby', args.heading ~= '' and 'documentation-heading' or nil)
			:attr('aria-label', args.heading == '' and 'Documentation' or nil)
			:newline()
			:tag('div')
				-- 'documentation'
				:addClass(message('main-div-classes'))
				:newline()
				:wikitext(p._startBox(args, env))
				:wikitext(p._content(args, env))
				:tag('div')
					-- 'documentation-clear'
					:addClass(message('clear'))
					:done()
				:newline()
				:done()
			:wikitext(p._endBox(args, env))
			:done()
		:wikitext(p.addTrackingCategories(env))
	-- 'Module:Documentation/styles.css'
	return mw.getCurrentFrame():extensionTag(
		'templatestyles', '', {src = cfg['templatestyles']
	}) .. tostring(root)
end

----------------------------------------------------------------------------
-- Environment settings
----------------------------------------------------------------------------

function p.getEnvironment(args)
	--[[
	-- Returns a table with information about the environment, including title
	-- objects and other namespace- or path-related data.
	-- @args - table of arguments passed by the user
	--
	-- Title objects include:
	-- env.title - the page we are making documentation for (usually the current title)
	-- env.templateTitle - the template (or module, file, etc.)
	-- env.docTitle - the /doc subpage.
	-- env.sandboxTitle - the /sandbox subpage.
	-- env.testcasesTitle - the /testcases subpage.
	--
	-- Data includes:
	-- env.protectionLevels - the protection levels table of the title object.
	-- env.subjectSpace - the number of the title's subject namespace.
	-- env.docSpace - the number of the namespace the title puts its documentation in.
	-- env.docpageBase - the text of the base page of the /doc, /sandbox and /testcases pages, with namespace.
	-- env.compareUrl - URL of the Special:ComparePages page comparing the sandbox with the template.
	--
	-- All table lookups are passed through pcall so that errors are caught.
	--]]

	local env, envFuncs = {}, {}

	setmetatable(env, {
		__index = function (t, key)
			local envFunc = envFuncs[key]
			if envFunc then
				local success, val = pcall(envFunc)
				if success then
					env[key] = val
					return val
				end
			end
			return nil
		end
	})

	function envFuncs.title()
		local title
		local titleArg = args.page
		if titleArg then
			title = mw.title.new(titleArg)
		else
			title = mw.title.getCurrentTitle()
		end
		return title
	end

	function envFuncs.templateTitle()
		--[[
		-- [zhwiki 改进] 增加 doc 子页判断，防止在 /doc 页面上 templateTitle 指错
		--]]
		local subjectSpace = env.subjectSpace
		local title = env.title
		local subpage = title.subpageText
		if subpage == message('sandbox-subpage')
			or subpage == message('testcases-subpage')
			or (subpage == message('doc-subpage') and mw.title.getCurrentTitle().namespace == env.docSpace) then
			return mw.title.makeTitle(subjectSpace, title.baseText)
		else
			return mw.title.makeTitle(subjectSpace, title.text)
		end
	end

	function envFuncs.docTitle()
		local title = env.title
		local docname = args[1]
		local docpage
		if docname then
			docpage = docname
		else
			docpage = env.docpageBase .. '/' .. message('doc-subpage')
		end
		return mw.title.new(docpage)
	end

	function envFuncs.sandboxTitle()
		return mw.title.new(env.docpageBase .. '/' .. message('sandbox-subpage'))
	end

	function envFuncs.testcasesTitle()
		return mw.title.new(env.docpageBase .. '/' .. message('testcases-subpage'))
	end

	function envFuncs.printTitle()
		local templateTitle = env.templateTitle
		if templateTitle then
			return templateTitle:subPageTitle(message('print-subpage'))
		end
		return nil
	end

	function envFuncs.protectionLevels()
		return env.title.protectionLevels
	end

	function envFuncs.subjectSpace()
		return mw.site.namespaces[env.title.namespace].subject.id
	end

	function envFuncs.docSpace()
		local subjectSpace = env.subjectSpace
		if subjectSpace == 0 or subjectSpace == 6 or subjectSpace == 8 or subjectSpace == 14 then
			return subjectSpace + 1
		else
			return subjectSpace
		end
	end

	function envFuncs.docpageBase()
		local templateTitle = env.templateTitle
		local docSpace = env.docSpace
		local docSpaceText = mw.site.namespaces[docSpace].name
		return docSpaceText .. ':' .. templateTitle.text
	end

	function envFuncs.compareUrl()
		local templateTitle = env.templateTitle
		local sandboxTitle = env.sandboxTitle
		if templateTitle.exists and sandboxTitle.exists then
			local compareUrl = mw.uri.canonicalUrl(
				'Special:ComparePages',
				{ page1 = templateTitle.prefixedText, page2 = sandboxTitle.prefixedText }
			)
			return tostring(compareUrl)
		else
			return nil
		end
	end

	return env
end

----------------------------------------------------------------------------
-- Auxiliary templates
----------------------------------------------------------------------------

p.getModuleWikitext = makeInvokeFunc('_getModuleWikitext')

function p._getModuleWikitext(args, env)
	local currentTitle = mw.title.getCurrentTitle()
	if currentTitle.contentModel ~= 'Scribunto' then return end
	pcall(require, currentTitle.prefixedText)
	local moduleWikitext = package.loaded['Module:Module wikitext']
	if moduleWikitext then
		return moduleWikitext.main()
	end
end

function p.sandboxNotice(args, env)
	--[=[
	-- Generates a sandbox notice for display above sandbox pages.
	-- @args - a table of arguments passed by the user
	-- @env - environment table containing title objects, etc.
	-- 
	-- [zhwiki 改进] 增加 pagetypee 变量用于 testcases 提示
	--]=]
	local title = env.title
	local sandboxTitle = env.sandboxTitle
	local templateTitle = env.templateTitle
	local subjectSpace = env.subjectSpace
	if not (subjectSpace and title and sandboxTitle and templateTitle
		and mw.title.equals(title, sandboxTitle)) then
		return nil
	end

	local omargs = {}
	omargs.image = message('sandbox-notice-image')

	local text = '__EXPECTUNUSEDTEMPLATE__'
	local pagetype, pagetypee, sandboxCat
	if subjectSpace == 10 then
		pagetype = message('sandbox-notice-pagetype-template')
		pagetypee = message('template-pagetype')
		sandboxCat = message('sandbox-category')
	elseif subjectSpace == 828 then
		pagetype = message('sandbox-notice-pagetype-module')
		pagetypee = message('module-pagetype')
		sandboxCat = message('module-sandbox-category')
	else
		pagetype = message('sandbox-notice-pagetype-other')
		pagetypee = message('default-pagetype')
		sandboxCat = message('other-sandbox-category')
	end

	local templateLink = makeWikilink(templateTitle.prefixedText)
	local compareUrl = env.compareUrl
	-- mworg 预览检测：预览时不显示 diff 链接
	local isPreviewing = mw.getCurrentFrame():preprocess('{{REVISIONID}}') == ''
	if isPreviewing or not compareUrl then
		text = text .. message('sandbox-notice-blurb', {pagetype, templateLink})
	else
		local compareDisplay = message('sandbox-notice-compare-link-display')
		local compareLink = makeUrlLink(compareUrl, compareDisplay)
		text = text .. message('sandbox-notice-diff-blurb', {pagetype, templateLink, compareLink})
	end

	local testcasesTitle = env.testcasesTitle
	if testcasesTitle and testcasesTitle.exists then
		if testcasesTitle.contentModel == 'Scribunto' then
			local testcasesLinkDisplay = message('sandbox-notice-testcases-link-display')
			local testcasesRunLinkDisplay = message('sandbox-notice-testcases-run-link-display')
			local testcasesLink = makeWikilink(testcasesTitle.prefixedText, testcasesLinkDisplay)
			local testcasesRunLink = makeWikilink(testcasesTitle.talkPageTitle.prefixedText, testcasesRunLinkDisplay)
			text = text .. '<br /><small>' .. message('sandbox-notice-testcases-run-blurb', {pagetypee, testcasesLink, testcasesRunLink}) .. '</small>'
		else
			local testcasesLinkDisplay = message('sandbox-notice-testcases-link-display')
			local testcasesLink = makeWikilink(testcasesTitle.prefixedText, testcasesLinkDisplay)
			text = text .. '<br /><small>' .. message('sandbox-notice-testcases-blurb', {pagetypee, testcasesLink}) .. '</small>'
		end
	end

	omargs.text = text .. makeCategoryLink(sandboxCat)

	return '<div class="' .. message('clear') .. '"></div>'
		.. messageBox.main('ombox', omargs)
end

----------------------------------------------------------------------------
-- Start box
----------------------------------------------------------------------------

p.startBox = makeInvokeFunc('_startBox')

function p._startBox(args, env)
	env = env or p.getEnvironment(args)
	local links
	local content = args.content
	if not content or args[1] then
		local linksData = p.makeStartBoxLinksData(args, env)
		if linksData then
			links = p.renderStartBoxLinks(linksData)
		end
	end
	local data = p.makeStartBoxData(args, env, links)
	if data then
		return p.renderStartBox(data)
	else
		return nil
	end
end

function p.makeStartBoxLinksData(args, env)
	local subjectSpace = env.subjectSpace
	local title = env.title
	local docTitle = env.docTitle
	if not title or not docTitle then
		return nil
	end
	if docTitle.isRedirect then
		docTitle = docTitle.redirectTarget
	end

	local preload = args.preload
	if not preload then
		if subjectSpace == 828 then
			preload = message('module-preload')
		elseif subjectSpace == 6 then
			preload = message('file-docpage-preload')
		else
			preload = message('docpage-preload')
		end
	end

	return {
		title = title,
		docTitle = docTitle,
		viewLinkDisplay = message('view-link-display'),
		editLinkDisplay = message('edit-link-display'),
		historyLinkDisplay = message('history-link-display'),
		purgeLinkDisplay = message('purge-link-display'),
		preload = preload,
		createLinkDisplay = message('create-link-display')
	}
end

function p.renderStartBoxLinks(data)
	local docTitle = data.docTitle
	local purgeLink = makeWikilink("Special:Purge/" .. data.title.prefixedText, data.purgeLinkDisplay)
	if docTitle.exists then
		local viewLink = makeWikilink(docTitle.prefixedText, data.viewLinkDisplay)
		local editLink = makeWikilink("Special:EditPage/" .. docTitle.prefixedText, data.editLinkDisplay)
		local historyLink = makeWikilink("Special:PageHistory/" .. docTitle.prefixedText, data.historyLinkDisplay)
		return format('&#91;%s&#93; &#91;%s&#93; &#91;%s&#93; &#91;%s&#93;',
			viewLink, editLink, historyLink, purgeLink)
	else
		local createLink = makeUrlLink(docTitle:canonicalUrl{action = 'edit', preload = data.preload}, data.createLinkDisplay)
		return format('&#91;%s&#93; &#91;%s&#93;', createLink, purgeLink)
	end
end

function p.makeStartBoxData(args, env, links)
	local subjectSpace = env.subjectSpace
	if not subjectSpace then
		subjectSpace = 2
	end
	local data = {}

	local heading = args.heading
	if heading == '' then
		return nil
	end
	if heading then
		data.heading = heading
	elseif subjectSpace == 10 then
		data.heading = message('documentation-icon-wikitext') .. ' ' .. message('template-namespace-heading')
	elseif subjectSpace == 828 then
		data.heading = message('documentation-icon-wikitext') .. ' ' .. message('module-namespace-heading')
	elseif subjectSpace == 6 then
		data.heading = message('file-namespace-heading')
	else
		data.heading = message('other-namespaces-heading')
	end

	local headingStyle = args['heading-style']
	if headingStyle then
		data.headingStyleText = headingStyle
	else
		data.headingClass = message('main-div-heading-class')
	end

	if links then
		data.linksClass = message('start-box-link-classes')
		data.linksId = message('start-box-link-id')
		data.links = links
	end

	return data
end

function p.renderStartBox(data)
	local sbox = mw.html.create('div')
	sbox
		:addClass(message('start-box-class'))
		:newline()
		:tag('span')
			:addClass(data.headingClass)
			:attr('id', 'documentation-heading')
			:cssText(data.headingStyleText)
			: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)
	env = env or p.getEnvironment(args)
	local docTitle = env.docTitle
	local content = args.content
	if not content and docTitle and docTitle.exists then
		content = args._content or mw.getCurrentFrame():expandTemplate{title = docTitle.prefixedText}
	end
	return '\n' .. (content or '') .. '\n'
end

p.contentTitle = makeInvokeFunc('_contentTitle')

function p._contentTitle(args, env)
	env = env or p.getEnvironment(args)
	local docTitle = env.docTitle
	if not args.content and docTitle and docTitle.exists then
		return docTitle.prefixedText
	else
		return ''
	end
end

----------------------------------------------------------------------------
-- End box
----------------------------------------------------------------------------

p.endBox = makeInvokeFunc('_endBox')

function p._endBox(args, env)
	env = env or p.getEnvironment(args)
	local subjectSpace = env.subjectSpace
	local docTitle = env.docTitle
	if not subjectSpace or not docTitle then
		return nil
	end

	local linkBox = args['link box']
	if linkBox == 'off'
		or not (
			docTitle.exists
			or subjectSpace == 2
			or subjectSpace == 828
			or subjectSpace == 10
		) then
		return nil
	end

	local text = ''
	if linkBox then
		text = text .. linkBox
	else
		text = text .. (p.makeDocPageBlurb(args, env) or '')
		if subjectSpace == 2 or subjectSpace == 10 or subjectSpace == 828 then
			text = text .. (p.makeExperimentBlurb(args, env) or '') .. '<br />'
			if not args.content and not args[1] then
				text = text .. (p.makeCategoriesBlurb(args, env) or '')
			end
			text = text .. '' .. (p.makeSubpagesBlurb(args, env) or '')
			-- Print 版本提示（位于 end box 末尾）
			local printBlurb = p.makePrintBlurb(args, env)
			if printBlurb then
				text = text .. '<br />' .. printBlurb
			end
		end
	end

	local box = mw.html.create('div')
	box
		:attr('role', 'note')
		:addClass(message('end-box-class'))
		:addClass(message('end-box-plainlinks'))
		:wikitext(text)
		:done()

	return '\n' .. tostring(box)
end

function p.makeDocPageBlurb(args, env)
	local docTitle = env.docTitle
	if not docTitle then
		return nil
	end
	if docTitle.exists then
		local docLink = makeWikilink(docTitle.prefixedText)
		local editDisplay = message('edit-link-display')
		local editLink = makeWikilink("Special:EditPage/" .. docTitle.prefixedText, editDisplay)
		local historyDisplay = message('history-link-display')
		local historyLink = makeWikilink("Special:PageHistory/" .. docTitle.prefixedText, historyDisplay)
		return message('transcluded-from-blurb', {docLink})
			.. ''  -- zhwiki 改进：中文排版不需要空格
			.. makeToolbar(editLink, historyLink)
			.. '<br />'
	elseif env.subjectSpace == 828 then
		local createUrl = docTitle:canonicalUrl{action = 'edit', preload = message('module-preload')}
		local createDisplay = message('create-link-display')
		local createLink = makeUrlLink(createUrl, createDisplay)
		return message('create-module-doc-blurb', {createLink})
			.. '<br />'
	end
end

function p.makeExperimentBlurb(args, env)
	local subjectSpace = env.subjectSpace
	local templateTitle = env.templateTitle
	local sandboxTitle = env.sandboxTitle
	local testcasesTitle = env.testcasesTitle
	local templatePage = templateTitle.prefixedText
	if not subjectSpace or not templateTitle or not sandboxTitle or not testcasesTitle then
		return nil
	end

	local sandboxLinks, testcasesLinks
	if sandboxTitle.exists then
		local sandboxPage = sandboxTitle.prefixedText
		local sandboxDisplay = message('sandbox-link-display')
		local sandboxLink = makeWikilink(sandboxPage, sandboxDisplay)
		local sandboxEditDisplay = message('sandbox-edit-link-display')
		local sandboxEditLink = makeWikilink("Special:EditPage/" .. sandboxPage, sandboxEditDisplay)
		local compareUrl = env.compareUrl
		local compareLink
		if compareUrl then
			local compareDisplay = message('compare-link-display')
			compareLink = makeUrlLink(compareUrl, compareDisplay)
		end
		sandboxLinks = sandboxLink .. '' .. makeToolbar(sandboxEditLink, compareLink)
	else
		local sandboxPreload
		if subjectSpace == 828 then
			sandboxPreload = message('module-sandbox-preload')
		else
			sandboxPreload = message('template-sandbox-preload')
		end
		local sandboxCreateUrl = sandboxTitle:canonicalUrl{action = 'edit', preload = sandboxPreload}
		local sandboxCreateDisplay = message('sandbox-create-link-display')
		local sandboxCreateLink = makeUrlLink(sandboxCreateUrl, sandboxCreateDisplay)
		local mirrorSummary = message('mirror-edit-summary', {makeWikilink(templatePage)})
		local mirrorPreload = message('mirror-link-preload')
		local mirrorUrl = sandboxTitle:canonicalUrl{action = 'edit', preload = mirrorPreload, summary = mirrorSummary}
		if subjectSpace == 828 then
			mirrorUrl = sandboxTitle:canonicalUrl{action = 'edit', preload = templateTitle.prefixedText, summary = mirrorSummary}
		end
		local mirrorDisplay = message('mirror-link-display')
		local mirrorLink = makeUrlLink(mirrorUrl, mirrorDisplay)
		sandboxLinks = message('sandbox-link-display') .. '' .. makeToolbar(sandboxCreateLink, mirrorLink)
	end

	if testcasesTitle.exists then
		local testcasesPage = testcasesTitle.prefixedText
		local testcasesDisplay = message('testcases-link-display')
		local testcasesLink = makeWikilink(testcasesPage, testcasesDisplay)
		local testcasesEditDisplay = message('testcases-edit-link-display')
		local testcasesEditLink = makeWikilink("Special:EditPage/" .. testcasesPage, testcasesEditDisplay)
		if testcasesTitle.contentModel == 'Scribunto' and testcasesTitle.talkPageTitle and testcasesTitle.talkPageTitle.exists then
			local testcasesRunLinkDisplay = message('testcases-run-link-display')
			local testcasesRunLink = makeWikilink(testcasesTitle.talkPageTitle.prefixedText, testcasesRunLinkDisplay)
			testcasesLinks = testcasesLink .. '' .. makeToolbar(testcasesEditLink, testcasesRunLink)
		else
			testcasesLinks = testcasesLink .. '' .. makeToolbar(testcasesEditLink)
		end
	else
		local testcasesPreload
		if subjectSpace == 828 then
			testcasesPreload = message('module-testcases-preload')
		else
			testcasesPreload = message('template-testcases-preload')
		end
		local testcasesCreateUrl = testcasesTitle:canonicalUrl{action = 'edit', preload = testcasesPreload}
		local testcasesCreateDisplay = message('testcases-create-link-display')
		local testcasesCreateLink = makeUrlLink(testcasesCreateUrl, testcasesCreateDisplay)
		testcasesLinks = message('testcases-link-display') .. '' .. makeToolbar(testcasesCreateLink)
	end

	local messageName
	if subjectSpace == 828 then
		messageName = 'experiment-blurb-module'
	else
		messageName = 'experiment-blurb-template'
	end
	return message(messageName, {sandboxLinks, testcasesLinks})
end

function p.makeCategoriesBlurb(args, env)
	local docTitle = env.docTitle
	if not docTitle then
		return nil
	end
	local docPathLink = makeWikilink(docTitle.prefixedText, message('doc-link-display'))
	return message('add-categories-blurb', {docPathLink})
end

function p.makeSubpagesBlurb(args, env)
	local subjectSpace = env.subjectSpace
	local templateTitle = env.templateTitle
	if not subjectSpace or not templateTitle then
		return nil
	end
	local pagetype
	if subjectSpace == 10 then
		pagetype = message('template-pagetype')
	elseif subjectSpace == 828 then
		pagetype = message('module-pagetype')
	else
		pagetype = message('default-pagetype')
	end
	local subpagesLink = makeWikilink(
		'Special:PrefixIndex/' .. templateTitle.prefixedText .. '/',
		message('subpages-link-display', {pagetype})
	)
	return message('subpages-blurb', {subpagesLink})
end

----------------------------------------------------------------------------
-- Print version
----------------------------------------------------------------------------

function p.makePrintBlurb(args, env)
	--[=[
	-- Generates the blurb displayed when there is a print version of the template available.
	-- @args - a table of arguments passed by the user
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	--
	-- Config keys:
	-- 'print-subpage' --> 'Print'
	-- 'print-link-display' --> '/Print'
	-- 'print-blurb' --> '此模板有$1打印版本...'
	-- 'display-print-category' --> false
	-- 'print-category' --> '有打印版本的模板'
	--]=]
	local subjectSpace = env.subjectSpace
	local printTitle = env.printTitle
	if subjectSpace ~= 10 or not printTitle or not printTitle.exists then
		return nil
	end
	local printLink = makeWikilink(printTitle.prefixedText, message('print-link-display'))
	local text = message('print-blurb', {printLink})
	if message('display-print-category', nil, 'boolean') then
		text = text .. makeCategoryLink(message('print-category'))
	end
	return text
end

----------------------------------------------------------------------------
-- Tracking categories
----------------------------------------------------------------------------

function p.addTrackingCategories(env)
	local title = env.title
	local subjectSpace = env.subjectSpace
	if not title or not subjectSpace then
		return nil
	end
	local subpage = title.subpageText
	if message('display-strange-usage-category', nil, 'boolean')
		and (
			subpage == message('doc-subpage')
			or subjectSpace ~= 828 and subpage == message('testcases-subpage')
		) then
		return makeCategoryLink(message('strange-usage-category'))
	end
	return ''
end

return p