Difference between revisions of "Module:Documentation"

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(add functions for rendering start box links and for making the start box link data)
m (138 revisions imported: Importing Key_press template from Mediawiki)
 
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Line 3: Line 3:
 
-- Get required modules.
 
-- Get required modules.
 
local getArgs = require('Module:Arguments').getArgs
 
local getArgs = require('Module:Arguments').getArgs
−
local htmlBuilder = require('Module:HtmlBuilder')
 
 
local messageBox = require('Module:Message box')
 
local messageBox = require('Module:Message box')
  
Line 12: Line 11:
  
 
-- Often-used functions.
 
-- Often-used functions.
−
local gsub = mw.ustring.gsub
+
local ugsub = mw.ustring.gsub
  
 
----------------------------------------------------------------------------
 
----------------------------------------------------------------------------
Line 21: Line 20:
 
----------------------------------------------------------------------------
 
----------------------------------------------------------------------------
  
−
local function message(cfgKey, expectType, valArray)
+
local function message(cfgKey, valArray, expectType)
 
--[[
 
--[[
 
-- Gets a message from the cfg table and formats it if appropriate.
 
-- 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
 
-- The function raises an error if the value from the cfg table is not
−
-- of the type expectType.
+
-- of the type expectType. The default type for expectType is 'string'.
 
-- If the table valArray is present, strings such as $1, $2 etc. in the
 
-- 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.
 
-- 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.',
+
-- For example, if the message "foo-message" had the value 'Foo $2 bar $1.',
−
-- message('fooMessage', 'string', {'baz', 'qux'}) would return "Foo qux bar baz."
+
-- message('foo-message', {'baz', 'qux'}) would return "Foo qux bar baz."
 
--]]
 
--]]
 
local msg = cfg[cfgKey]
 
local msg = cfg[cfgKey]
−
if expectType and type(msg) ~= expectType then
+
expectType = expectType or 'string'
 +
if type(msg) ~= expectType then
 
error('message: type error in message cfg.' .. cfgKey .. ' (' .. expectType .. ' expected, got ' .. type(msg) .. ')', 2)
 
error('message: type error in message cfg.' .. cfgKey .. ' (' .. expectType .. ' expected, got ' .. type(msg) .. ')', 2)
 
end
 
end
Line 44: Line 44:
 
end
 
end
  
−
local ret = gsub(msg, '$([1-9][0-9]*)', getMessageVal)
+
local ret = ugsub(msg, '$([1-9][0-9]*)', getMessageVal)
 
return ret
 
return ret
 
end
 
end
Line 86: Line 86:
  
 
p.makeToolbar = makeToolbar
 
p.makeToolbar = makeToolbar
−
 
−
local function err(msg)
 
−
return string.format(
 
−
'<strong class="error">[[Module:Documentation]] error: %s</strong>%s',
 
−
msg,
 
−
makeCategoryLink('Documentation template invocations with errors')
 
−
)
 
−
end
 
−
 
−
p.err = err
 
  
 
----------------------------------------------------------------------------
 
----------------------------------------------------------------------------
Line 103: Line 93:
 
local function makeInvokeFunc(funcName)
 
local function makeInvokeFunc(funcName)
 
return function (frame)
 
return function (frame)
−
local headingArg = message('headingArg', 'string')
 
 
local args = getArgs(frame, {
 
local args = getArgs(frame, {
 
valueFunc = function (key, value)
 
valueFunc = function (key, value)
 
if type(value) == 'string' then
 
if type(value) == 'string' then
 
value = value:match('^%s*(.-)%s*$') -- Remove whitespace.
 
value = value:match('^%s*(.-)%s*$') -- Remove whitespace.
−
if key == headingArg or value ~= '' then
+
if key == 'heading' or value ~= '' then
 
return value
 
return value
 
else
 
else
Line 129: Line 118:
  
 
function p._main(args)
 
function p._main(args)
 +
--[[
 +
-- This function defines logic flow for the module.
 +
-- @args - table of arguments passed by the user
 +
--
 +
-- Messages:
 +
-- 'main-div-id' --> 'template-documentation'
 +
-- 'main-div-classes' --> 'template-documentation iezoomfix'
 +
--]]
 
local env = p.getEnvironment(args)
 
local env = p.getEnvironment(args)
−
local root = htmlBuilder.create()
+
local root = mw.html.create()
 
root
 
root
−
.wikitext(p.protectionTemplate(env))
+
:wikitext(p.protectionTemplate(env))
−
.wikitext(p.sandboxNotice(args, env))
+
:wikitext(p.sandboxNotice(args, env))
 
-- This div tag is from {{documentation/start box}}, but moving it here
 
-- This div tag is from {{documentation/start box}}, but moving it here
 
-- so that we don't have to worry about unclosed tags.
 
-- so that we don't have to worry about unclosed tags.
−
.tag('div')
+
:tag('div')
−
.attr('id', message('mainDivId', 'string'))
+
:attr('id', message('main-div-id'))
−
.addClass(message('mainDivClasses', 'string'))
+
:addClass(message('main-div-classes'))
−
.newline()
+
:css('padding', '12px')
−
.wikitext(p._startBox(args, env))
+
:newline()
−
.wikitext(p._content(args, env))
+
:wikitext(p._startBox(args, env))
−
.tag('div')
+
:wikitext(p._content(args, env))
−
.css('clear', 'both') -- So right or left floating items don't stick out of the doc box.
+
:tag('div')
−
.newline()
+
:css('clear', 'both') -- So right or left floating items don't stick out of the doc box.
−
.done()
+
:newline()
−
.done()
+
:done()
−
.wikitext(p._endBox(args, env))
+
:done()
−
.newline()
+
:wikitext(p._endBox(args, env))
−
.wikitext(p.addTrackingCategories(env))
+
:wikitext(p.addTrackingCategories(env))
 
return tostring(root)
 
return tostring(root)
 
end
 
end
Line 158: Line 155:
  
 
function p.getEnvironment(args)
 
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
+
-- Returns a table with information about the environment, including title objects and other namespace- or
−
-- limit, or other perils unknown.
+
-- 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.
 +
-- env.printTitle - the print version of the template, located at the /Print subpage.
 
--
 
--
 
-- Data includes:
 
-- Data includes:
−
-- env.title - the title object of the page we are making documentation for (usually the current title)
+
-- env.protectionLevels - the protection levels table of the title object.
 
-- env.subjectSpace - the number of the title's subject namespace.
 
-- env.subjectSpace - the number of the title's subject namespace.
−
-- env.docspace - the name of the namespace the title puts its documentation in.
+
-- env.docSpace - the number of the namespace the title puts its documentation in.
−
-- env.templatePage - the name of the template page with no namespace or interwiki prefixes.
+
-- 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. If an error occurs, the value
 +
-- returned will be nil.
 +
--]]
 +
 
local env, envFuncs = {}, {}
 
local env, envFuncs = {}, {}
  
−
-- Set up the metatable. If a nil value is called, we call that function in the envFuncs table and memoize it
+
-- Set up the metatable. If triggered we call the corresponding function in the envFuncs table. The value
−
-- in the env table so we don't have to call any of the functions more than once.
+
-- returned by that function is memoized in the env table so that we don't call any of the functions
 +
-- more than once. (Nils won't be memoized.)
 
setmetatable(env, {
 
setmetatable(env, {
 
__index = function (t, key)
 
__index = function (t, key)
 
local envFunc = envFuncs[key]
 
local envFunc = envFuncs[key]
 
if envFunc then
 
if envFunc then
−
local val = envFunc()
+
local success, val = pcall(envFunc)
−
env[key] = val
+
if success then
−
return val
+
env[key] = val -- Memoise the value.
−
else
+
return val
−
return nil
+
end
 
end
 
end
 +
return nil
 
end
 
end
 
})
 
})
  
−
-- Get the title.
 
 
function envFuncs.title()
 
function envFuncs.title()
 +
-- The title object for the current page, or a test page passed with args.page.
 
local title
 
local title
−
local titleArg = args[message('titleArg', 'string')]
+
local titleArg = args.page
 
if titleArg then
 
if titleArg then
 
title = mw.title.new(titleArg)
 
title = mw.title.new(titleArg)
−
if not title then
 
−
error(message('titleArgError', 'string', {titleArg}))
 
−
end
 
 
else
 
else
 
title = mw.title.getCurrentTitle()
 
title = mw.title.getCurrentTitle()
Line 199: Line 210:
 
end
 
end
  
−
-- Get the subject namespace number.
+
function envFuncs.templateTitle()
−
function envFuncs.subjectSpace()
+
--[[
−
return mw.site.namespaces[env.title.namespace].subject.id
+
-- The template (or module, etc.) title object.
−
end
+
-- Messages:
−
+
-- 'sandbox-subpage' --> 'sandbox'
−
-- Get the name of the documentation namespace.
+
-- 'testcases-subpage' --> 'testcases'
−
function envFuncs.docspace()
+
--]]
 
local subjectSpace = env.subjectSpace
 
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 title = env.title
 
local subpage = title.subpageText
 
local subpage = title.subpageText
−
if subpage == message('sandboxSubpage', 'string') or subpage == message('testcasesSubpage', 'string') then
+
if subpage == message('sandbox-subpage') or subpage == message('testcases-subpage') then
−
return title.baseText
+
return mw.title.makeTitle(subjectSpace, title.baseText)
 
else
 
else
−
return title.text
+
return mw.title.makeTitle(subjectSpace, title.text)
 
end
 
end
 
end
 
end
  
 
function envFuncs.docTitle()
 
function envFuncs.docTitle()
 +
--[[
 +
-- Title object of the /doc subpage.
 +
-- Messages:
 +
-- 'doc-subpage' --> 'doc'
 +
--]]
 
local title = env.title
 
local title = env.title
−
local docname = args[1] -- Other docname, if fed.
+
local docname = args[1] -- User-specified doc page.
−
local docspace = env.docspace
 
−
local templatePage = env.templatePage
 
 
local docpage
 
local docpage
 
if docname then
 
if docname then
 
docpage = docname
 
docpage = docname
 
else
 
else
−
local namespace = docspace or title.nsText
+
docpage = env.docpageBase .. '/' .. message('doc-subpage')
−
local pagename = templatePage or title.text
 
−
docpage = namespace .. ':' .. pagename .. '/' .. message('docSubpage', 'string')
 
 
end
 
end
 
return mw.title.new(docpage)
 
return mw.title.new(docpage)
 +
end
 +
 +
function envFuncs.sandboxTitle()
 +
--[[
 +
-- Title object for the /sandbox subpage.
 +
-- Messages:
 +
-- 'sandbox-subpage' --> 'sandbox'
 +
--]]
 +
return mw.title.new(env.docpageBase .. '/' .. message('sandbox-subpage'))
 +
end
 +
 +
function envFuncs.testcasesTitle()
 +
--[[
 +
-- Title object for the /testcases subpage.
 +
-- Messages:
 +
-- 'testcases-subpage' --> 'testcases'
 +
--]]
 +
return mw.title.new(env.docpageBase .. '/' .. message('testcases-subpage'))
 +
end
 +
 +
function envFuncs.printTitle()
 +
--[[
 +
-- Title object for the /Print subpage.
 +
-- Messages:
 +
-- 'print-subpage' --> 'Print'
 +
--]]
 +
return env.templateTitle:subPageTitle(message('print-subpage'))
 +
end
 +
 +
function envFuncs.protectionLevels()
 +
-- The protection levels table of the title object.
 +
return env.title.protectionLevels
 +
end
 +
 +
function envFuncs.subjectSpace()
 +
-- The subject namespace number.
 +
return mw.site.namespaces[env.title.namespace].subject.id
 +
end
 +
 +
function envFuncs.docSpace()
 +
-- The documentation namespace number. For most namespaces this is the same as the
 +
-- subject namespace. However, pages in the Article, File, MediaWiki or Category
 +
-- namespaces must have their /doc, /sandbox and /testcases pages in talk space.
 +
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
 
end
  
−
function env:grab(key)
+
function envFuncs.docpageBase()
−
local success, val = pcall(function() return self[key] end)
+
-- The base page of the /doc, /sandbox, and /testcases subpages.
−
return success, val
+
-- For some namespaces this is the talk page, rather than the template page.
 +
local templateTitle = env.templateTitle
 +
local docSpace = env.docSpace
 +
local docSpaceText = mw.site.namespaces[docSpace].name
 +
-- Assemble the link. docSpace is never the main namespace, so we can hardcode the colon.
 +
return docSpaceText .. ':' .. templateTitle.text
 
end
 
end
 +
 +
function envFuncs.compareUrl()
 +
-- Diff link between the sandbox and the main template using [[Special:ComparePages]].
 +
local templateTitle = env.templateTitle
 +
local sandboxTitle = env.sandboxTitle
 +
if templateTitle.exists and sandboxTitle.exists then
 +
local compareUrl = mw.uri.fullUrl(
 +
'Special:ComparePages',
 +
{page1 = templateTitle.prefixedText, page2 = sandboxTitle.prefixedText}
 +
)
 +
return tostring(compareUrl)
 +
else
 +
return nil
 +
end
 +
end
  
 
return env
 
return env
Line 256: Line 326:
  
 
function p.sandboxNotice(args, env)
 
function p.sandboxNotice(args, env)
−
local sandboxNoticeTemplate = message('sandboxNoticeTemplate', 'string')
+
--[=[
−
if not (sandboxNoticeTemplate and env.title.subpageText == message('sandboxSubpage', 'string')) then
+
-- 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., generated with p.getEnvironment
 +
--
 +
-- Messages:
 +
-- 'sandbox-notice-image' --> '[[Image:Sandbox.svg|50px|alt=|link=]]'
 +
-- 'sandbox-notice-blurb' --> 'This is the $1 for $2.'
 +
-- 'sandbox-notice-diff-blurb' --> 'This is the $1 for $2 ($3).'
 +
-- 'sandbox-notice-pagetype-template' --> '[[Wikipedia:Template test cases|template sandbox]] page'
 +
-- 'sandbox-notice-pagetype-module' --> '[[Wikipedia:Template test cases|module sandbox]] page'
 +
-- 'sandbox-notice-pagetype-other' --> 'sandbox page'
 +
-- 'sandbox-notice-compare-link-display' --> 'diff'
 +
-- 'sandbox-notice-testcases-blurb' --> 'See also the companion subpage for $1.'
 +
-- 'sandbox-notice-testcases-link-display' --> 'test cases'
 +
-- 'sandbox-category' --> 'Template sandboxes'
 +
--]=]
 +
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
 
return nil
 
end
 
end
 +
-- Build the table of arguments to pass to {{ombox}}. We need just two fields, "image" and "text".
 +
local omargs = {}
 +
omargs.image = message('sandbox-notice-image')
 +
-- Get the text. We start with the opening blurb, which is something like
 +
-- "This is the template sandbox for [[Template:Foo]] (diff)."
 +
local text = ''
 
local frame = mw.getCurrentFrame()
 
local frame = mw.getCurrentFrame()
−
local notice = htmlBuilder.create()
+
local isPreviewing = frame:preprocess('{{REVISIONID}}') == '' -- True if the page is being previewed.
−
notice
+
local pagetype
−
.tag('div')
+
if subjectSpace == 10 then
−
.css('clear', 'both')
+
pagetype = message('sandbox-notice-pagetype-template')
−
.done()
+
elseif subjectSpace == 828 then
−
.wikitext(frame:expandTemplate{title = sandboxNoticeTemplate, args = {[message('sandboxNoticeLivepageParam')] = args[message('livepageArg', 'string')]}})
+
pagetype = message('sandbox-notice-pagetype-module')
−
return tostring(notice)
+
else
 +
pagetype = message('sandbox-notice-pagetype-other')
 +
end
 +
local templateLink = makeWikilink(templateTitle.prefixedText)
 +
local compareUrl = env.compareUrl
 +
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
 +
-- Get the test cases page blurb if the page exists. This is something like
 +
-- "See also the companion subpage for [[Template:Foo/testcases|test cases]]."
 +
local testcasesTitle = env.testcasesTitle
 +
if testcasesTitle and testcasesTitle.exists then
 +
if testcasesTitle.namespace == mw.site.namespaces.Module.id 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 />' .. message('sandbox-notice-testcases-run-blurb', {testcasesLink, testcasesRunLink})
 +
else
 +
local testcasesLinkDisplay = message('sandbox-notice-testcases-link-display')
 +
local testcasesLink = makeWikilink(testcasesTitle.prefixedText, testcasesLinkDisplay)
 +
text = text .. '<br />' .. message('sandbox-notice-testcases-blurb', {testcasesLink})
 +
end
 +
end
 +
-- Add the sandbox to the sandbox category.
 +
text = text .. makeCategoryLink(message('sandbox-category'))
 +
omargs.text = text
 +
local ret = '<div style="clear: both;"></div>'
 +
ret = ret .. messageBox.main('ombox', omargs)
 +
return ret
 
end
 
end
  
 
function p.protectionTemplate(env)
 
function p.protectionTemplate(env)
 +
-- Generates the padlock icon in the top right.
 +
-- @env - environment table containing title objects, etc., generated with p.getEnvironment
 +
-- Messages:
 +
-- 'protection-template' --> 'pp-template'
 +
-- 'protection-template-args' --> {docusage = 'yes'}
 
local title = env.title
 
local title = env.title
−
local protectionTemplate = message('protectionTemplate', 'string')
+
local protectionLevels
−
if not (protectionTemplate and title.namespace == 10) then
+
local protectionTemplate = message('protection-template')
−
-- Don't display the protection template if we are not in the template namespace.
+
local namespace = title.namespace
 +
if not (protectionTemplate and (namespace == 10 or namespace == 828)) then
 +
-- Don't display the protection template if we are not in the template or module namespaces.
 
return nil
 
return nil
 
end
 
end
−
local frame = mw.getCurrentFrame()
+
protectionLevels = env.protectionLevels
−
local function getProtectionLevel(protectionType, page)
+
if not protectionLevels then
−
-- Gets the protection level for page, or for the current page if page is not specified.
+
return nil
−
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
 
end
−
local prefixedTitle = title.prefixedText
+
local editLevels = protectionLevels.edit
−
if getProtectionLevel('move', prefixedTitle) == 'sysop' or getProtectionLevel('edit', prefixedTitle) then
+
local moveLevels = protectionLevels.move
 +
if moveLevels and moveLevels[1] == 'sysop' or editLevels and editLevels[1] then
 
-- The page is full-move protected, or full, template, or semi-protected.
 
-- The page is full-move protected, or full, template, or semi-protected.
−
return frame:expandTemplate{title = protectionTemplate, args = message('protectionTemplateArgs', 'table')}
+
local frame = mw.getCurrentFrame()
 +
return frame:expandTemplate{title = protectionTemplate, args = message('protection-template-args', nil, 'table')}
 +
else
 +
return nil
 
end
 
end
−
return nil
 
 
end
 
end
  
Line 302: Line 435:
  
 
function p._startBox(args, env)
 
function p._startBox(args, env)
−
local title = env.title
+
--[[
−
local subjectSpace = env.subjectSpace
+
-- This function generates the start box.
−
 
+
-- @args - a table of arguments passed by the user
−
-- Arg processing from {{documentation}}.
+
-- @env - environment table containing title objects, etc., generated with p.getEnvironment
−
local preload = args[message('preloadArg', 'string')] -- Allow custom preloads.
+
--
−
local heading = args[message('headingArg', 'string')] -- Blank values are not removed.
+
-- The actual work is done by p.makeStartBoxLinksData and p.renderStartBoxLinks which make
−
local headingStyle = args[message('headingStyleArg', 'string')]
+
-- the [view] [edit] [history] [purge] links, and by p.makeStartBoxData and p.renderStartBox
−
local content = args[message('contentArg', 'string')]
+
-- which generate the box HTML.
−
local docspace = env.docspace
+
--]]
−
local docname = args[1] -- Other docname, if fed.
+
env = env or p.getEnvironment(args)
−
local templatePage = env.templatePage
+
local links
−
 
+
local content = args.content
−
-- Arg processing from {{documentation/start box2}}.
+
if not content then
−
local docpage
+
-- No need to include the links if the documentation is on the template page itself.
−
if docname then
+
local linksData = p.makeStartBoxLinksData(args, env)
−
docpage = docname
+
if linksData then
 +
links = p.renderStartBoxLinks(linksData)
 +
end
 +
end
 +
-- Generate the start box html.
 +
local data = p.makeStartBoxData(args, env, links)
 +
if data then
 +
return p.renderStartBox(data)
 
else
 
else
−
local namespace = docspace or title.nsText
+
-- User specified no heading.
−
local pagename = templatePage or title.text
+
return nil
−
docpage = namespace .. ':' .. pagename .. '/' .. message('docSubpage', 'string')
 
 
end
 
end
−
local docTitle = mw.title.new(docpage)
+
end
−
local docExist = docTitle.exists
 
−
 
−
-- Output from {{documentation/start box}}.
 
  
−
-- First, check the heading parameter.
+
function p.makeStartBoxLinksData(args, env)
−
if heading == '' then
+
--[[
−
-- Heading is defined but blank, so do nothing.
+
-- Does initial processing of data to make the [view] [edit] [history] [purge] links.
 +
-- @args - a table of arguments passed by the user
 +
-- @env - environment table containing title objects, etc., generated with p.getEnvironment
 +
--
 +
-- Messages:
 +
-- 'view-link-display' --> 'view'
 +
-- 'edit-link-display' --> 'edit'
 +
-- 'history-link-display' --> 'history'
 +
-- 'purge-link-display' --> 'purge'
 +
-- 'file-docpage-preload' --> 'Template:Documentation/preload-filespace'
 +
-- 'module-preload' --> 'Template:Documentation/preload-module-doc'
 +
-- 'docpage-preload' --> 'Template:Documentation/preload'
 +
-- 'create-link-display' --> 'create'
 +
--]]
 +
local subjectSpace = env.subjectSpace
 +
local title = env.title
 +
local docTitle = env.docTitle
 +
if not title or not docTitle then
 
return nil
 
return nil
 
end
 
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('font-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
 
−
 
−
function p.makeStartBoxLinksData(args, env)
 
 
local data = {}
 
local data = {}
−
-- Get title objects.
+
data.title = title
−
local titleSuccess, title = env:grab('title')
+
data.docTitle = docTitle
−
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.
 
-- View, display, edit, and purge links if /doc exists.
−
data.viewLinkDisplay = message('viewLinkDisplay', 'string')
+
data.viewLinkDisplay = message('view-link-display')
−
data.editLinkDisplay = message('editLinkDisplay', 'string')
+
data.editLinkDisplay = message('edit-link-display')
−
data.historyLinkDisplay = message('historyLinkDisplay', 'string')
+
data.historyLinkDisplay = message('history-link-display')
−
data.purgeLinkDisplay = message('purgeLinkDisplay', 'string')
+
data.purgeLinkDisplay = message('purge-link-display')
 
-- Create link if /doc doesn't exist.
 
-- Create link if /doc doesn't exist.
−
local preload = args[message('preloadArg', 'string')]
+
local preload = args.preload
 
if not preload then
 
if not preload then
−
if env.subjectSpace == 6 then -- File namespace
+
if subjectSpace == 6 then -- File namespace
−
preload = message('fileDocpagePreload', 'string')
+
preload = message('file-docpage-preload')
 +
elseif subjectSpace == 828 then -- Module namespace
 +
preload = message('module-preload')
 
else
 
else
−
preload = message('docpagePreload', 'string')
+
preload = message('docpage-preload')
 
end
 
end
 
end
 
end
 
data.preload = preload
 
data.preload = preload
−
data.createLinkDisplay = message('createLinkDisplay', 'string')
+
data.createLinkDisplay = message('create-link-display')
 
return data
 
return data
 
end
 
end
  
 
function p.renderStartBoxLinks(data)
 
function p.renderStartBoxLinks(data)
−
-- Render the [view][edit][history][purge] or [create] links.
+
--[[
 +
-- Generates the [view][edit][history][purge] or [create] links from the data table.
 +
-- @data - a table of data generated by p.makeStartBoxLinksData
 +
--]]
 +
 +
local function escapeBrackets(s)
 +
-- Escapes square brackets with HTML entities.
 +
s = s:gsub('%[', '&#91;') -- Replace square brackets with HTML entities.
 +
s = s:gsub('%]', '&#93;')
 +
return s
 +
end
 +
 
 
local ret
 
local ret
 
local docTitle = data.docTitle
 
local docTitle = data.docTitle
 
local title = data.title
 
local title = data.title
 
if docTitle.exists then
 
if docTitle.exists then
−
local viewLink = makeWikilink(docpage, data.viewLinkDisplay)
+
local viewLink = makeWikilink(docTitle.prefixedText, data.viewLinkDisplay)
 
local editLink = makeUrlLink(docTitle:fullUrl{action = 'edit'}, data.editLinkDisplay)
 
local editLink = makeUrlLink(docTitle:fullUrl{action = 'edit'}, data.editLinkDisplay)
 
local historyLink = makeUrlLink(docTitle:fullUrl{action = 'history'}, data.historyLinkDisplay)
 
local historyLink = makeUrlLink(docTitle:fullUrl{action = 'history'}, data.historyLinkDisplay)
 
local purgeLink = makeUrlLink(title:fullUrl{action = 'purge'}, data.purgeLinkDisplay)
 
local purgeLink = makeUrlLink(title:fullUrl{action = 'purge'}, data.purgeLinkDisplay)
 
ret = '[%s] [%s] [%s] [%s]'
 
ret = '[%s] [%s] [%s] [%s]'
−
ret = ret:gsub('%[', '&#91;') -- Replace square brackets with HTML entities.
+
ret = escapeBrackets(ret)
−
ret = ret:gsub('%]', '&#93;')
 
 
ret = mw.ustring.format(ret, viewLink, editLink, historyLink, purgeLink)
 
ret = mw.ustring.format(ret, viewLink, editLink, historyLink, purgeLink)
 
else
 
else
−
lspan.wikitext(makeUrlLink(docTitle:fullUrl{action = 'edit', preload = data.preload}, data.createLinkDisplay))
+
local createLink = makeUrlLink(docTitle:fullUrl{action = 'edit', preload = data.preload}, data.createLinkDisplay)
 +
ret = '[%s]'
 +
ret = escapeBrackets(ret)
 +
ret = mw.ustring.format(ret, createLink)
 +
end
 +
return ret
 +
end
 +
 
 +
function p.makeStartBoxData(args, env, links)
 +
--[=[
 +
-- Does initial processing of data to pass to the start-box render function, p.renderStartBox.
 +
-- @args - a table of arguments passed by the user
 +
-- @env - environment table containing title objects, etc., generated with p.getEnvironment
 +
-- @links - a string containing the [view][edit][history][purge] links - could be nil if there's an error.
 +
--
 +
-- Messages:
 +
-- 'documentation-icon-wikitext' --> '[[File:Test Template Info-Icon - Version (2).svg|50px|link=|alt=Documentation icon]]'
 +
-- 'template-namespace-heading' --> 'Template documentation'
 +
-- 'module-namespace-heading' --> 'Module documentation'
 +
-- 'file-namespace-heading' --> 'Summary'
 +
-- 'other-namespaces-heading' --> 'Documentation'
 +
-- 'start-box-linkclasses' --> 'mw-editsection-like plainlinks'
 +
-- 'start-box-link-id' --> 'doc_editlinks'
 +
-- 'testcases-create-link-display' --> 'create'
 +
--]=]
 +
local subjectSpace = env.subjectSpace
 +
if not subjectSpace then
 +
-- Default to an "other namespaces" namespace, so that we get at least some output
 +
-- if an error occurs.
 +
subjectSpace = 2
 +
end
 +
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('documentation-icon-wikitext') .. ' ' .. message('template-namespace-heading')
 +
elseif subjectSpace == 828 then -- Module namespace
 +
data.heading = message('documentation-icon-wikitext') .. ' ' .. message('module-namespace-heading')
 +
elseif subjectSpace == 6 then -- File namespace
 +
data.heading = message('file-namespace-heading')
 +
else
 +
data.heading = message('other-namespaces-heading')
 +
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
 
end
 +
 +
-- Data for the [view][edit][history][purge] or [create] links.
 +
if links then
 +
data.linksClass = message('start-box-linkclasses')
 +
data.linksId = message('start-box-link-id')
 +
data.links = links
 +
end
 +
 +
return data
 
end
 
end
  
 
function p.renderStartBox(data)
 
function p.renderStartBox(data)
 
-- Renders the start box html.
 
-- Renders the start box html.
−
local sbox = htmlBuilder.create('div')
+
-- @data - a table of data generated by p.makeStartBoxData.
 +
local sbox = mw.html.create('div')
 
sbox
 
sbox
−
.css('padding-bottom', '3px')
+
:css('padding-bottom', '3px')
−
.css('border-bottom', '1px solid #aaa')
+
:css('border-bottom', '1px solid #aaa')
−
.css('margin-bottom', '1ex')
+
:css('margin-bottom', '1ex')
−
.newline()
+
:newline()
−
.tag('span')
+
:tag('span')
−
.cssText(data.headingStyleText)
+
:cssText(data.headingStyleText)
−
.css('font-weight', data.headingFontWeight)
+
:css('font-weight', data.headingFontWeight)
−
.css('font-size', data.headingFontSize)
+
:css('font-size', data.headingFontSize)
−
.wikitext(data.heading)
+
:wikitext(data.heading)
−
if data.showLinks then
+
local links = data.links
−
sbox.tag('span')
+
if links then
−
.addClass(data.linksClass)
+
sbox:tag('span')
−
.attr('id', data.linksId)
+
:addClass(data.linksClass)
−
.wikitext(data.links)
+
:attr('id', data.linksId)
 +
:wikitext(links)
 
end
 
end
 
return tostring(sbox)
 
return tostring(sbox)
Line 481: Line 640:
  
 
function p._content(args, env)
 
function p._content(args, env)
−
local content = args[message('contentArg', 'string')]
+
-- Displays the documentation contents
−
if not content then
+
-- @args - a table of arguments passed by the user
−
local docpage = args[1]
+
-- @env - environment table containing title objects, etc., generated with p.getEnvironment
−
if docpage and mw.title.new(docpage).exists then
+
env = env or p.getEnvironment(args)
−
local frame = mw.getCurrentFrame()
+
local docTitle = env.docTitle
−
content = frame:preprocess('{{ ' .. docpage .. ' }}')
+
local content = args.content
−
else
+
if not content and docTitle and docTitle.exists then
−
docpage = env.docspace .. ':' .. env.templatePage .. '/' .. message('docSubpage', 'string')
+
content = args._content or mw.getCurrentFrame():expandTemplate{title = docTitle.prefixedText}
−
if mw.title.new(docpage).exists then
 
−
local frame = mw.getCurrentFrame()
 
−
content = frame:preprocess('{{ ' .. docpage .. ' }}')
 
−
end
 
−
end
 
 
end
 
end
 
-- The line breaks below are necessary so that "=== Headings ===" at the start and end
 
-- The line breaks below are necessary so that "=== Headings ===" at the start and end
 
-- of docs are interpreted correctly.
 
-- of docs are interpreted correctly.
 
return '\n' .. (content or '') .. '\n'  
 
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
  
Line 507: Line 673:
  
 
function p._endBox(args, env)
 
function p._endBox(args, env)
−
local title = env.title
+
--[=[
 +
-- This function generates the end box (also known as the link box).
 +
-- @args - a table of arguments passed by the user
 +
-- @env - environment table containing title objects, etc., generated with p.getEnvironment
 +
--
 +
-- Messages:
 +
-- 'fmbox-id' --> 'documentation-meta-data'
 +
-- 'fmbox-style' --> 'background-color: #ecfcf4'
 +
-- 'fmbox-textstyle' --> 'font-style: italic'
 +
--
 +
-- The HTML is generated by the {{fmbox}} template, courtesy of [[Module:Message box]].
 +
--]=]
 +
 +
-- Get environment data.
 +
env = env or p.getEnvironment(args)
 
local subjectSpace = env.subjectSpace
 
local subjectSpace = env.subjectSpace
−
 
+
local docTitle = env.docTitle
−
-- Argument processing in {{documentation}}.
+
if not subjectSpace or not docTitle then
−
local content = args[message('contentArg', 'string')]
+
return nil
−
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 {{documentation/end box2}}.
 
−
local docpageRoot = (docspace or title.nsText) .. ':' .. (templatePage or title.text)
 
−
local docpage
 
−
if docname then
 
−
docpage = docname
 
−
else
 
−
docpage = docpageRoot .. '/' .. message('docSubpage', 'string')
 
 
end
 
end
−
local docTitle = mw.title.new(docpage)
+
−
local docExist = docTitle.exists
+
-- Check whether we should output the end box at all. Add the end
−
local docnameFed = args[1] and true
+
-- box by default if the documentation exists or if we are in the
−
local sandbox = docpageRoot .. '/' .. message('sandboxSubpage', 'string')
+
-- user, module or template namespaces.
−
local testcases = docpageRoot .. '/' .. message('testcasesSubpage', 'string')
+
local linkBox = args['link box']
−
templatePage = title.nsText .. ':' .. templatePage
+
if linkBox == 'off'
−
 
+
or not (
−
-- Output from {{documentation/end box}}
+
docTitle.exists
−
+
or subjectSpace == 2
−
-- First, check whether we should output the end box at all. Add the end box by default if the documentation
+
or subjectSpace == 828
−
-- exists or if we are in the user, module or template namespaces.
+
or subjectSpace == 10
−
if linkBox == message('linkBoxOff', 'string') or not (docExist or subjectSpace == 2 or subjectSpace == 828 or subjectSpace == 10) then
+
)
 +
then
 
return nil
 
return nil
 
end
 
end
Line 542: Line 711:
 
-- Assemble the arguments for {{fmbox}}.
 
-- Assemble the arguments for {{fmbox}}.
 
local fmargs = {}
 
local fmargs = {}
−
fmargs[message('fmboxIdParam', 'string')] = message('fmboxId', 'string') -- Sets fmargs.id = 'documentation-meta-data'
+
fmargs.id = message('fmbox-id') -- Sets 'documentation-meta-data'
−
fmargs[message('fmboxImageParam', 'string')] = message('fmboxImageNone', 'string') -- Sets fmargs.image = 'none'
+
fmargs.image = 'none'
−
fmargs[message('fmboxStyleParam', 'string')] = message('fmboxStyle', 'string') -- Sets fmargs.style = 'background-color: #ecfcf4'
+
fmargs.style = message('fmbox-style') -- Sets 'background-color: #ecfcf4'
−
fmargs[message('fmboxTextstyleParam', 'string')] = message('fmboxTextstyle', 'string') -- Sets fmargs.textstyle = 'font-style: italic;'
+
fmargs.textstyle = message('fmbox-textstyle') -- 'font-style: italic;'
  
 
-- Assemble the fmbox text field.
 
-- Assemble the fmbox text field.
 
local text = ''
 
local text = ''
 
if linkBox then
 
if linkBox then
−
-- Use custom link box content if it is defined.
 
 
text = text .. linkBox
 
text = text .. linkBox
 
else
 
else
−
if docExist then
+
text = text .. (p.makeDocPageBlurb(args, env) or '') -- "This documentation is transcluded from [[Foo]]."
−
-- /doc exists; link to it.
+
if subjectSpace == 2 or subjectSpace == 10 or subjectSpace == 828 then
−
local docLink = makeWikilink(docpage)
+
-- We are in the user, template or module namespaces.
−
local editLink = makeUrlLink(docTitle:fullUrl{action = 'edit'}, message('editLinkDisplay', 'string'))
+
-- Add sandbox and testcases links.
−
local historyLink = makeUrlLink(docTitle:fullUrl{action = 'history'}, message('historyLinkDisplay', 'string'))
+
-- "Editors can experiment in this template's sandbox and testcases pages."
−
text = text .. message('transcludedFromBlurb', 'string', {docLink}) .. ' ' .. makeToolbar(editLink, historyLink) .. '<br />'
+
text = text .. (p.makeExperimentBlurb(args, env) or '')
−
elseif subjectSpace == 828 then
+
text = text .. '<br />'
−
-- /doc does not exist; ask to create it.
+
if not args.content and not args[1] then
−
local createLink = makeUrlLink(docTitle:fullUrl{action = 'edit', preload = message('modulePreload', 'string')}, message('createLinkDisplay', 'string'))
+
-- "Please add categories to the /doc subpage."
−
text = text .. message('createModuleDocBlurb', 'string', {createLink}) .. '<br />'
+
-- Don't show this message with inline docs or with an explicitly specified doc page,
−
end
+
-- as then it is unclear where to add the categories.
−
-- Add links to /sandbox and /testcases when appropriate.
+
text = text .. (p.makeCategoriesBlurb(args, env) or '')
−
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}) .. '<br />'
 
−
-- 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
 
end
−
-- Show the "print" link if it exists.
+
text = text .. ' ' .. (p.makeSubpagesBlurb(args, env) or '') --"Subpages of this template"
−
local printPage = templatePage .. '/' .. message('printSubpage', 'string')
+
local printBlurb = p.makePrintBlurb(args, env) -- Two-line blurb about print versions of templates.
−
local printTitle = mw.title.new(printPage)
+
if printBlurb then
−
if printTitle.exists then
+
text = text .. '<br />' .. printBlurb
−
local printLink = makeWikilink(printPage, message('printLinkDisplay', 'string'))
 
−
text = text .. '<br />' .. message('printBlurb', 'string', {printLink})
 
−
.. (message('displayPrintCategory', 'boolean') and makeCategoryLink(message('printCategory', 'string')) or '')
 
 
end
 
end
 
end
 
end
Line 622: Line 743:
 
fmargs.text = text
 
fmargs.text = text
  
−
-- Return the fmbox output.
 
 
return messageBox.main('fmbox', fmargs)
 
return messageBox.main('fmbox', fmargs)
 +
end
 +
 +
function p.makeDocPageBlurb(args, env)
 +
--[=[
 +
-- Makes the blurb "This documentation is transcluded from [[Template:Foo]] (edit, history)".
 +
-- @args - a table of arguments passed by the user
 +
-- @env - environment table containing title objects, etc., generated with p.getEnvironment
 +
--
 +
-- Messages:
 +
-- 'edit-link-display' --> 'edit'
 +
-- 'history-link-display' --> 'history'
 +
-- 'transcluded-from-blurb' -->
 +
-- 'The above [[Wikipedia:Template documentation|documentation]]
 +
-- is [[Wikipedia:Transclusion|transcluded]] from $1.'
 +
-- 'module-preload' --> 'Template:Documentation/preload-module-doc'
 +
-- 'create-link-display' --> 'create'
 +
-- 'create-module-doc-blurb' -->
 +
-- 'You might want to $1 a documentation page for this [[Wikipedia:Lua|Scribunto module]].'
 +
--]=]
 +
local docTitle = env.docTitle
 +
if not docTitle then
 +
return nil
 +
end
 +
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('edit-link-display')
 +
local editLink = makeUrlLink(editUrl, editDisplay)
 +
local historyUrl = docTitle:fullUrl{action = 'history'}
 +
local historyDisplay = message('history-link-display')
 +
local historyLink = makeUrlLink(historyUrl, historyDisplay)
 +
ret = message('transcluded-from-blurb', {docLink})
 +
.. ' '
 +
.. makeToolbar(editLink, historyLink)
 +
.. '<br />'
 +
elseif env.subjectSpace == 828 then
 +
-- /doc does not exist; ask to create it.
 +
local createUrl = docTitle:fullUrl{action = 'edit', preload = message('module-preload')}
 +
local createDisplay = message('create-link-display')
 +
local createLink = makeUrlLink(createUrl, createDisplay)
 +
ret = message('create-module-doc-blurb', {createLink})
 +
.. '<br />'
 +
end
 +
return ret
 +
end
 +
 +
function p.makeExperimentBlurb(args, env)
 +
--[[
 +
-- Renders the text "Editors can experiment in this template's sandbox (edit | diff) and testcases (edit) pages."
 +
-- @args - a table of arguments passed by the user
 +
-- @env - environment table containing title objects, etc., generated with p.getEnvironment
 +
--
 +
-- Messages:
 +
-- 'sandbox-link-display' --> 'sandbox'
 +
-- 'sandbox-edit-link-display' --> 'edit'
 +
-- 'compare-link-display' --> 'diff'
 +
-- 'module-sandbox-preload' --> 'Template:Documentation/preload-module-sandbox'
 +
-- 'template-sandbox-preload' --> 'Template:Documentation/preload-sandbox'
 +
-- 'sandbox-create-link-display' --> 'create'
 +
-- 'mirror-edit-summary' --> 'Create sandbox version of $1'
 +
-- 'mirror-link-display' --> 'mirror'
 +
-- 'mirror-link-preload' --> 'Template:Documentation/mirror'
 +
-- 'sandbox-link-display' --> 'sandbox'
 +
-- 'testcases-link-display' --> 'testcases'
 +
-- 'testcases-edit-link-display'--> 'edit'
 +
-- 'template-sandbox-preload' --> 'Template:Documentation/preload-sandbox'
 +
-- 'testcases-create-link-display' --> 'create'
 +
-- 'testcases-link-display' --> 'testcases'
 +
-- 'testcases-edit-link-display' --> 'edit'
 +
-- 'module-testcases-preload' --> 'Template:Documentation/preload-module-testcases'
 +
-- 'template-testcases-preload' --> 'Template:Documentation/preload-testcases'
 +
-- 'experiment-blurb-module' --> 'Editors can experiment in this module's $1 and $2 pages.'
 +
-- 'experiment-blurb-template' --> 'Editors can experiment in this template's $1 and $2 pages.'
 +
--]]
 +
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
 +
-- Make links.
 +
local sandboxLinks, testcasesLinks
 +
if sandboxTitle.exists then
 +
local sandboxPage = sandboxTitle.prefixedText
 +
local sandboxDisplay = message('sandbox-link-display')
 +
local sandboxLink = makeWikilink(sandboxPage, sandboxDisplay)
 +
local sandboxEditUrl = sandboxTitle:fullUrl{action = 'edit'}
 +
local sandboxEditDisplay = message('sandbox-edit-link-display')
 +
local sandboxEditLink = makeUrlLink(sandboxEditUrl, 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:fullUrl{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:fullUrl{action = 'edit', preload = mirrorPreload, summary = mirrorSummary}
 +
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 testcasesEditUrl = testcasesTitle:fullUrl{action = 'edit'}
 +
local testcasesEditDisplay = message('testcases-edit-link-display')
 +
local testcasesEditLink = makeUrlLink(testcasesEditUrl, testcasesEditDisplay)
 +
testcasesLinks = testcasesLink .. ' ' .. makeToolbar(testcasesEditLink)
 +
else
 +
local testcasesPreload
 +
if subjectSpace == 828 then
 +
testcasesPreload = message('module-testcases-preload')
 +
else
 +
testcasesPreload = message('template-testcases-preload')
 +
end
 +
local testcasesCreateUrl = testcasesTitle:fullUrl{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)
 +
--[[
 +
-- Generates the text "Please add categories to the /doc subpage."
 +
-- @args - a table of arguments passed by the user
 +
-- @env - environment table containing title objects, etc., generated with p.getEnvironment
 +
-- Messages:
 +
-- 'doc-link-display' --> '/doc'
 +
-- 'add-categories-blurb' --> 'Please add categories to the $1 subpage.'
 +
--]]
 +
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)
 +
--[[
 +
-- Generates the "Subpages of this template" link.
 +
-- @args - a table of arguments passed by the user
 +
-- @env - environment table containing title objects, etc., generated with p.getEnvironment
 +
 +
-- Messages:
 +
-- 'template-pagetype' --> 'template'
 +
-- 'module-pagetype' --> 'module'
 +
-- 'default-pagetype' --> 'page'
 +
-- 'subpages-link-display' --> 'Subpages of this $1'
 +
--]]
 +
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
 +
 +
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
 +
--
 +
-- Messages:
 +
-- 'print-link-display' --> '/Print'
 +
-- 'print-blurb' --> 'A [[Help:Books/for experts#Improving the book layout|print version]]'
 +
-- .. ' of this template exists at $1.'
 +
-- .. ' If you make a change to this template, please update the print version as well.'
 +
-- 'display-print-category' --> true
 +
-- 'print-category' --> 'Templates with print versions'
 +
--]=]
 +
local printTitle = env.printTitle
 +
if not printTitle then
 +
return nil
 +
end
 +
local ret
 +
if printTitle.exists then
 +
local printLink = makeWikilink(printTitle.prefixedText, message('print-link-display'))
 +
ret = message('print-blurb', {printLink})
 +
local displayPrintCategory = message('display-print-category', nil, 'boolean')
 +
if displayPrintCategory then
 +
ret = ret .. makeCategoryLink(message('print-category'))
 +
end
 +
end
 +
return ret
 
end
 
end
  
Line 631: Line 974:
  
 
function p.addTrackingCategories(env)
 
function p.addTrackingCategories(env)
 +
--[[
 
-- Check if {{documentation}} is transcluded on a /doc or /testcases page.
 
-- Check if {{documentation}} is transcluded on a /doc or /testcases page.
 +
-- @env - environment table containing title objects, etc., generated with p.getEnvironment
 +
 +
-- Messages:
 +
-- 'display-strange-usage-category' --> true
 +
-- 'doc-subpage' --> 'doc'
 +
-- 'testcases-subpage' --> 'testcases'
 +
-- 'strange-usage-category' --> 'Wikipedia pages with strange ((documentation)) usage'
 +
--
 +
-- /testcases pages in the module namespace are not categorised, as they may have
 +
-- {{documentation}} transcluded automatically.
 +
--]]
 
local title = env.title
 
local title = env.title
 +
local subjectSpace = env.subjectSpace
 +
if not title or not subjectSpace then
 +
return nil
 +
end
 +
local subpage = title.subpageText
 
local ret = ''
 
local ret = ''
−
local subpage = title.subpageText
+
if message('display-strange-usage-category', nil, 'boolean')
−
if message('displayStrangeUsageCategory', 'boolean') and (subpage == message('docSubpage', 'string') or subpage == message('testcasesSubpage', 'string')) then
+
and (
−
local sort = (title.namespace == 0 and message('strangeUsageCategoryMainspaceSort', 'string') or '') .. title.prefixedText -- Sort on namespace.
+
subpage == message('doc-subpage')
−
ret = ret .. makeCategoryLink(message('strangeUsageCategory', 'string'), sort)
+
or subjectSpace ~= 828 and subpage == message('testcases-subpage')
 +
)
 +
then
 +
ret = ret .. makeCategoryLink(message('strange-usage-category'))
 
end
 
end
 
return ret
 
return ret

Latest revision as of 16:00, 10 July 2017

Documentation for this module may be created at Module:Documentation/doc 

-- This module implements {{documentation}}.

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

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

local p = {}

-- Often-used functions.
local ugsub = 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, valArray, expectType)
	--[[
	-- 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. The default type for expectType is 'string'.
	-- 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 "foo-message" had the value 'Foo $2 bar $1.',
	-- message('foo-message', {'baz', 'qux'}) would return "Foo qux bar baz."
	--]]
	local msg = cfg[cfgKey]
	expectType = expectType or 'string'
	if 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 = ugsub(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|%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 '<small style="font-style: normal;">(' .. table.concat(ret, ' &#124; ') .. ')</small>'
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*$') -- 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)
	--[[
	-- This function defines logic flow for the module.
	-- @args - table of arguments passed by the user
	-- 
	-- Messages:
	-- 'main-div-id' --> 'template-documentation'
	-- 'main-div-classes' --> 'template-documentation iezoomfix'
	--]]
	local env = p.getEnvironment(args)
	local root = mw.html.create()
	root
		:wikitext(p.protectionTemplate(env))
		:wikitext(p.sandboxNotice(args, env))
		 -- This div tag is from {{documentation/start box}}, but moving it here
		 -- so that we don't have to worry about unclosed tags.
		:tag('div')
			:attr('id', message('main-div-id'))
			:addClass(message('main-div-classes'))
			:css('padding', '12px')
			: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))
		:wikitext(p.addTrackingCategories(env))
	return 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.
	-- env.printTitle - the print version of the template, located at the /Print 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. If an error occurs, the value
	-- returned will be nil.
	--]]
	
	local env, envFuncs = {}, {}

	-- Set up the metatable. If triggered we call the corresponding function in the envFuncs table. The value
	-- returned by that function is memoized in the env table so that we don't call any of the functions
	-- more than once. (Nils won't be memoized.)
	setmetatable(env, {
		__index = function (t, key)
			local envFunc = envFuncs[key]
			if envFunc then
				local success, val = pcall(envFunc)
				if success then
					env[key] = val -- Memoise the value.
					return val
				end
			end
			return nil
		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)
		else
			title = mw.title.getCurrentTitle()
		end
		return title
	end

	function envFuncs.templateTitle()
		--[[
		-- The template (or module, etc.) title object.
		-- Messages:
		-- 'sandbox-subpage' --> 'sandbox'
		-- 'testcases-subpage' --> 'testcases'
		--]]
		local subjectSpace = env.subjectSpace
		local title = env.title
		local subpage = title.subpageText
		if subpage == message('sandbox-subpage') or subpage == message('testcases-subpage') then
			return mw.title.makeTitle(subjectSpace, title.baseText)
		else
			return mw.title.makeTitle(subjectSpace, title.text)
		end
	end

	function envFuncs.docTitle()
		--[[
		-- Title object of the /doc subpage.
		-- Messages:
		-- 'doc-subpage' --> 'doc'
		--]]
		local title = env.title
		local docname = args[1] -- User-specified doc page.
		local docpage
		if docname then
			docpage = docname
		else
			docpage = env.docpageBase .. '/' .. message('doc-subpage')
		end
		return mw.title.new(docpage)
	end
	
	function envFuncs.sandboxTitle()
		--[[
		-- Title object for the /sandbox subpage.
		-- Messages:
		-- 'sandbox-subpage' --> 'sandbox'
		--]]
		return mw.title.new(env.docpageBase .. '/' .. message('sandbox-subpage'))
	end
	
	function envFuncs.testcasesTitle()
		--[[
		-- Title object for the /testcases subpage.
		-- Messages:
		-- 'testcases-subpage' --> 'testcases'
		--]]
		return mw.title.new(env.docpageBase .. '/' .. message('testcases-subpage'))
	end
	
	function envFuncs.printTitle()
		--[[
		-- Title object for the /Print subpage.
		-- Messages:
		-- 'print-subpage' --> 'Print'
		--]]
		return env.templateTitle:subPageTitle(message('print-subpage'))
	end

	function envFuncs.protectionLevels()
		-- The protection levels table of the title object.
		return env.title.protectionLevels
	end

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

	function envFuncs.docSpace()
		-- The documentation namespace number. For most namespaces this is the same as the
		-- subject namespace. However, pages in the Article, File, MediaWiki or Category
		-- namespaces must have their /doc, /sandbox and /testcases pages in talk space.
		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()
		-- The base page of the /doc, /sandbox, and /testcases subpages.
		-- For some namespaces this is the talk page, rather than the template page.
		local templateTitle = env.templateTitle
		local docSpace = env.docSpace
		local docSpaceText = mw.site.namespaces[docSpace].name
		-- Assemble the link. docSpace is never the main namespace, so we can hardcode the colon.
		return docSpaceText .. ':' .. templateTitle.text
	end
	
	function envFuncs.compareUrl()
		-- Diff link between the sandbox and the main template using [[Special:ComparePages]].
		local templateTitle = env.templateTitle
		local sandboxTitle = env.sandboxTitle
		if templateTitle.exists and sandboxTitle.exists then
			local compareUrl = mw.uri.fullUrl(
				'Special:ComparePages',
				{page1 = templateTitle.prefixedText, page2 = sandboxTitle.prefixedText}
			)
			return tostring(compareUrl)
		else
			return nil
		end
	end		

	return env
end	

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

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., generated with p.getEnvironment
	-- 
	-- Messages:
	-- 'sandbox-notice-image' --> '[[Image:Sandbox.svg|50px|alt=|link=]]'
	-- 'sandbox-notice-blurb' --> 'This is the $1 for $2.'
	-- 'sandbox-notice-diff-blurb' --> 'This is the $1 for $2 ($3).'
	-- 'sandbox-notice-pagetype-template' --> '[[Wikipedia:Template test cases|template sandbox]] page'
	-- 'sandbox-notice-pagetype-module' --> '[[Wikipedia:Template test cases|module sandbox]] page'
	-- 'sandbox-notice-pagetype-other' --> 'sandbox page'
	-- 'sandbox-notice-compare-link-display' --> 'diff'
	-- 'sandbox-notice-testcases-blurb' --> 'See also the companion subpage for $1.'
	-- 'sandbox-notice-testcases-link-display' --> 'test cases'
	-- 'sandbox-category' --> 'Template sandboxes'
	--]=]
	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
	-- Build the table of arguments to pass to {{ombox}}. We need just two fields, "image" and "text".
	local omargs = {}
	omargs.image = message('sandbox-notice-image')
	-- Get the text. We start with the opening blurb, which is something like
	-- "This is the template sandbox for [[Template:Foo]] (diff)."
	local text = ''
	local frame = mw.getCurrentFrame()
	local isPreviewing = frame:preprocess('{{REVISIONID}}') == '' -- True if the page is being previewed.
	local pagetype
	if subjectSpace == 10 then
		pagetype = message('sandbox-notice-pagetype-template')
	elseif subjectSpace == 828 then
		pagetype = message('sandbox-notice-pagetype-module')
	else
		pagetype = message('sandbox-notice-pagetype-other')
	end
	local templateLink = makeWikilink(templateTitle.prefixedText)
	local compareUrl = env.compareUrl
	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
	-- Get the test cases page blurb if the page exists. This is something like
	-- "See also the companion subpage for [[Template:Foo/testcases|test cases]]."
	local testcasesTitle = env.testcasesTitle
	if testcasesTitle and testcasesTitle.exists then
		if testcasesTitle.namespace == mw.site.namespaces.Module.id 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 />' .. message('sandbox-notice-testcases-run-blurb', {testcasesLink, testcasesRunLink})
		else
			local testcasesLinkDisplay = message('sandbox-notice-testcases-link-display')
			local testcasesLink = makeWikilink(testcasesTitle.prefixedText, testcasesLinkDisplay)
			text = text .. '<br />' .. message('sandbox-notice-testcases-blurb', {testcasesLink})
		end
	end
	-- Add the sandbox to the sandbox category.
	text = text .. makeCategoryLink(message('sandbox-category'))
	omargs.text = text
	local ret = '<div style="clear: both;"></div>'
	ret = ret .. messageBox.main('ombox', omargs)
	return ret
end

function p.protectionTemplate(env)
	-- Generates the padlock icon in the top right.
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	-- Messages:
	-- 'protection-template' --> 'pp-template'
	-- 'protection-template-args' --> {docusage = 'yes'}
	local title = env.title
	local protectionLevels
	local protectionTemplate = message('protection-template')
	local namespace = title.namespace
	if not (protectionTemplate and (namespace == 10 or namespace == 828)) then
		-- Don't display the protection template if we are not in the template or module namespaces.
		return nil
	end
	protectionLevels = env.protectionLevels
	if not protectionLevels then
		return nil
	end
	local editLevels = protectionLevels.edit
	local moveLevels = protectionLevels.move
	if moveLevels and moveLevels[1] == 'sysop' or editLevels and editLevels[1] then
		-- The page is full-move protected, or full, template, or semi-protected.
		local frame = mw.getCurrentFrame()
		return frame:expandTemplate{title = protectionTemplate, args = message('protection-template-args', nil, 'table')}
	else
		return nil
	end
end

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

p.startBox = makeInvokeFunc('_startBox')

function p._startBox(args, env)
	--[[
	-- This function generates the start box.
	-- @args - a table of arguments passed by the user
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	-- 
	-- The actual work is done by p.makeStartBoxLinksData and p.renderStartBoxLinks which make
	-- the [view] [edit] [history] [purge] links, and by p.makeStartBoxData and p.renderStartBox
	-- which generate the box HTML.
	--]]
	env = env or p.getEnvironment(args)
	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 linksData then
			links = p.renderStartBoxLinks(linksData)
		end
	end
	-- Generate the start box html.
	local data = p.makeStartBoxData(args, env, links)
	if data then
		return p.renderStartBox(data)
	else
		-- User specified no heading.
		return nil
	end
end

function p.makeStartBoxLinksData(args, env)
	--[[
	-- Does initial processing of data to make the [view] [edit] [history] [purge] links.
	-- @args - a table of arguments passed by the user
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	-- 
	-- Messages:
	-- 'view-link-display' --> 'view'
	-- 'edit-link-display' --> 'edit'
	-- 'history-link-display' --> 'history'
	-- 'purge-link-display' --> 'purge'
	-- 'file-docpage-preload' --> 'Template:Documentation/preload-filespace'
	-- 'module-preload' --> 'Template:Documentation/preload-module-doc'
	-- 'docpage-preload' --> 'Template:Documentation/preload'
	-- 'create-link-display' --> 'create'
	--]]
	local subjectSpace = env.subjectSpace
	local title = env.title
	local docTitle = env.docTitle
	if not title or not docTitle then
		return nil
	end

	local data = {}
	data.title = title
	data.docTitle = docTitle
	-- View, display, edit, and purge links if /doc exists.
	data.viewLinkDisplay = message('view-link-display')
	data.editLinkDisplay = message('edit-link-display')
	data.historyLinkDisplay = message('history-link-display')
	data.purgeLinkDisplay = message('purge-link-display')
	-- Create link if /doc doesn't exist.
	local preload = args.preload
	if not preload then
		if subjectSpace == 6 then -- File namespace
			preload = message('file-docpage-preload')
		elseif subjectSpace == 828 then -- Module namespace
			preload = message('module-preload')
		else
			preload = message('docpage-preload')
		end
	end
	data.preload = preload
	data.createLinkDisplay = message('create-link-display')
	return data
end

function p.renderStartBoxLinks(data)
	--[[
	-- Generates the [view][edit][history][purge] or [create] links from the data table.
	-- @data - a table of data generated by p.makeStartBoxLinksData
	--]]
	
	local function escapeBrackets(s)
		-- Escapes square brackets with HTML entities.
		s = s:gsub('%[', '&#91;') -- Replace square brackets with HTML entities.
		s = s:gsub('%]', '&#93;')
		return s
	end

	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 = escapeBrackets(ret)
		ret = mw.ustring.format(ret, viewLink, editLink, historyLink, purgeLink)
	else
		local createLink = makeUrlLink(docTitle:fullUrl{action = 'edit', preload = data.preload}, data.createLinkDisplay)
		ret = '[%s]'
		ret = escapeBrackets(ret)
		ret = mw.ustring.format(ret, createLink)
	end
	return ret
end

function p.makeStartBoxData(args, env, links)
	--[=[
	-- Does initial processing of data to pass to the start-box render function, p.renderStartBox.
	-- @args - a table of arguments passed by the user
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	-- @links - a string containing the [view][edit][history][purge] links - could be nil if there's an error.
	--
	-- Messages:
	-- 'documentation-icon-wikitext' --> '[[File:Test Template Info-Icon - Version (2).svg|50px|link=|alt=Documentation icon]]'
	-- 'template-namespace-heading' --> 'Template documentation'
	-- 'module-namespace-heading' --> 'Module documentation'
	-- 'file-namespace-heading' --> 'Summary'
	-- 'other-namespaces-heading' --> 'Documentation'
	-- 'start-box-linkclasses' --> 'mw-editsection-like plainlinks'
	-- 'start-box-link-id' --> 'doc_editlinks'
	-- 'testcases-create-link-display' --> 'create'
	--]=]
	local subjectSpace = env.subjectSpace
	if not subjectSpace then
		-- Default to an "other namespaces" namespace, so that we get at least some output
		-- if an error occurs.
		subjectSpace = 2
	end
	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('documentation-icon-wikitext') .. ' ' .. message('template-namespace-heading')
	elseif subjectSpace == 828 then -- Module namespace
		data.heading = message('documentation-icon-wikitext') .. ' ' .. message('module-namespace-heading')
	elseif subjectSpace == 6 then -- File namespace
		data.heading = message('file-namespace-heading')
	else
		data.heading = message('other-namespaces-heading')
	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
	
	-- Data for the [view][edit][history][purge] or [create] links.
	if links then
		data.linksClass = message('start-box-linkclasses')
		data.linksId = message('start-box-link-id')
		data.links = links
	end
	
	return data
end

function p.renderStartBox(data)
	-- Renders the start box html.
	-- @data - a table of data generated by p.makeStartBoxData.
	local sbox = mw.html.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)
	-- Displays the documentation contents
	-- @args - a table of arguments passed by the user
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	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
	-- 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

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)
	--[=[
	-- This function generates the end box (also known as the link box).
	-- @args - a table of arguments passed by the user
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	-- 
	-- Messages:
	-- 'fmbox-id' --> 'documentation-meta-data'
	-- 'fmbox-style' --> 'background-color: #ecfcf4'
	-- 'fmbox-textstyle' --> 'font-style: italic'
	-- 
	-- The HTML is generated by the {{fmbox}} template, courtesy of [[Module:Message box]].
	--]=]
	
	-- Get environment data.
	env = env or p.getEnvironment(args)
	local subjectSpace = env.subjectSpace
	local docTitle = env.docTitle
	if not subjectSpace or not docTitle then
		return nil
	end
		
	-- 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.
	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

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

	-- Assemble the fmbox text field.
	local text = ''
	if linkBox then
		text = text .. linkBox
	else
		text = text .. (p.makeDocPageBlurb(args, env) or '') -- "This documentation is transcluded from [[Foo]]." 
		if subjectSpace == 2 or subjectSpace == 10 or subjectSpace == 828 then
			-- We are in the user, template or module namespaces.
			-- Add sandbox and testcases links.
			-- "Editors can experiment in this template's sandbox and testcases pages."
			text = text .. (p.makeExperimentBlurb(args, env) or '')
			text = text .. '<br />'
			if not args.content and not args[1] then
				-- "Please add categories to the /doc subpage."
				-- Don't show this message with inline docs or with an explicitly specified doc page,
				-- as then it is unclear where to add the categories.
				text = text .. (p.makeCategoriesBlurb(args, env) or '')
			end
			text = text .. ' ' .. (p.makeSubpagesBlurb(args, env) or '') --"Subpages of this template"
			local printBlurb = p.makePrintBlurb(args, env) -- Two-line blurb about print versions of templates.
			if printBlurb then
				text = text .. '<br />' .. printBlurb
			end
		end
	end
	fmargs.text = text

	return messageBox.main('fmbox', fmargs)
end

function p.makeDocPageBlurb(args, env)
	--[=[
	-- Makes the blurb "This documentation is transcluded from [[Template:Foo]] (edit, history)".
	-- @args - a table of arguments passed by the user
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	-- 
	-- Messages:
	-- 'edit-link-display' --> 'edit'
	-- 'history-link-display' --> 'history'
	-- 'transcluded-from-blurb' --> 
	-- 'The above [[Wikipedia:Template documentation|documentation]] 
	-- is [[Wikipedia:Transclusion|transcluded]] from $1.'
	-- 'module-preload' --> 'Template:Documentation/preload-module-doc'
	-- 'create-link-display' --> 'create'
	-- 'create-module-doc-blurb' -->
	-- 'You might want to $1 a documentation page for this [[Wikipedia:Lua|Scribunto module]].'
	--]=]
	local docTitle = env.docTitle
	if not docTitle then
		return nil
	end
	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('edit-link-display')
		local editLink = makeUrlLink(editUrl, editDisplay)
		local historyUrl = docTitle:fullUrl{action = 'history'}
		local historyDisplay = message('history-link-display')
		local historyLink = makeUrlLink(historyUrl, historyDisplay)
		ret = message('transcluded-from-blurb', {docLink})
			.. ' '
			.. makeToolbar(editLink, historyLink)
			.. '<br />'
	elseif env.subjectSpace == 828 then
		-- /doc does not exist; ask to create it.
		local createUrl = docTitle:fullUrl{action = 'edit', preload = message('module-preload')}
		local createDisplay = message('create-link-display')
		local createLink = makeUrlLink(createUrl, createDisplay)
		ret = message('create-module-doc-blurb', {createLink})
			.. '<br />'
	end
	return ret
end

function p.makeExperimentBlurb(args, env)
	--[[
	-- Renders the text "Editors can experiment in this template's sandbox (edit | diff) and testcases (edit) pages."
	-- @args - a table of arguments passed by the user
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	-- 
	-- Messages:
	-- 'sandbox-link-display' --> 'sandbox'
	-- 'sandbox-edit-link-display' --> 'edit'
	-- 'compare-link-display' --> 'diff'
	-- 'module-sandbox-preload' --> 'Template:Documentation/preload-module-sandbox'
	-- 'template-sandbox-preload' --> 'Template:Documentation/preload-sandbox'
	-- 'sandbox-create-link-display' --> 'create'
	-- 'mirror-edit-summary' --> 'Create sandbox version of $1'
	-- 'mirror-link-display' --> 'mirror'
	-- 'mirror-link-preload' --> 'Template:Documentation/mirror'
	-- 'sandbox-link-display' --> 'sandbox'
	-- 'testcases-link-display' --> 'testcases'
	-- 'testcases-edit-link-display'--> 'edit'
	-- 'template-sandbox-preload' --> 'Template:Documentation/preload-sandbox'
	-- 'testcases-create-link-display' --> 'create'
	-- 'testcases-link-display' --> 'testcases'
	-- 'testcases-edit-link-display' --> 'edit'
	-- 'module-testcases-preload' --> 'Template:Documentation/preload-module-testcases'
	-- 'template-testcases-preload' --> 'Template:Documentation/preload-testcases'
	-- 'experiment-blurb-module' --> 'Editors can experiment in this module's $1 and $2 pages.'
	-- 'experiment-blurb-template' --> 'Editors can experiment in this template's $1 and $2 pages.'
	--]]
	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
	-- Make links.
	local sandboxLinks, testcasesLinks
	if sandboxTitle.exists then
		local sandboxPage = sandboxTitle.prefixedText
		local sandboxDisplay = message('sandbox-link-display')
		local sandboxLink = makeWikilink(sandboxPage, sandboxDisplay)
		local sandboxEditUrl = sandboxTitle:fullUrl{action = 'edit'}
		local sandboxEditDisplay = message('sandbox-edit-link-display')
		local sandboxEditLink = makeUrlLink(sandboxEditUrl, 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:fullUrl{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:fullUrl{action = 'edit', preload = mirrorPreload, summary = mirrorSummary}
		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 testcasesEditUrl = testcasesTitle:fullUrl{action = 'edit'}
		local testcasesEditDisplay = message('testcases-edit-link-display')
		local testcasesEditLink = makeUrlLink(testcasesEditUrl, testcasesEditDisplay)
		testcasesLinks = testcasesLink .. ' ' .. makeToolbar(testcasesEditLink)
	else
		local testcasesPreload
		if subjectSpace == 828 then
			testcasesPreload = message('module-testcases-preload')
		else
			testcasesPreload = message('template-testcases-preload')
		end
		local testcasesCreateUrl = testcasesTitle:fullUrl{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)
	--[[
	-- Generates the text "Please add categories to the /doc subpage."
	-- @args - a table of arguments passed by the user
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	-- Messages:
	-- 'doc-link-display' --> '/doc'
	-- 'add-categories-blurb' --> 'Please add categories to the $1 subpage.'
	--]]
	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)
	--[[
	-- Generates the "Subpages of this template" link.
	-- @args - a table of arguments passed by the user
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	
	-- Messages:
	-- 'template-pagetype' --> 'template'
	-- 'module-pagetype' --> 'module'
	-- 'default-pagetype' --> 'page'
	-- 'subpages-link-display' --> 'Subpages of this $1'
	--]]
	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

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
	--
	-- Messages:
	-- 'print-link-display' --> '/Print'
	-- 'print-blurb' --> 'A [[Help:Books/for experts#Improving the book layout|print version]]'
	--		.. ' of this template exists at $1.'
	--		.. ' If you make a change to this template, please update the print version as well.'
	-- 'display-print-category' --> true
	-- 'print-category' --> 'Templates with print versions'
	--]=]
	local printTitle = env.printTitle
	if not printTitle then
		return nil
	end
	local ret
	if printTitle.exists then
		local printLink = makeWikilink(printTitle.prefixedText, message('print-link-display'))
		ret = message('print-blurb', {printLink})
		local displayPrintCategory = message('display-print-category', nil, 'boolean')
		if displayPrintCategory then
			ret = ret .. makeCategoryLink(message('print-category'))
		end
	end
	return ret
end

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

function p.addTrackingCategories(env)
	--[[
	-- Check if {{documentation}} is transcluded on a /doc or /testcases page.
	-- @env - environment table containing title objects, etc., generated with p.getEnvironment
	
	-- Messages:
	-- 'display-strange-usage-category' --> true
	-- 'doc-subpage' --> 'doc'
	-- 'testcases-subpage' --> 'testcases'
	-- 'strange-usage-category' --> 'Wikipedia pages with strange ((documentation)) usage'
	-- 
	-- /testcases pages in the module namespace are not categorised, as they may have
	-- {{documentation}} transcluded automatically.
	--]]
	local title = env.title
	local subjectSpace = env.subjectSpace
	if not title or not subjectSpace then
		return nil
	end
	local subpage = title.subpageText
	local ret = ''
	if message('display-strange-usage-category', nil, 'boolean')
		and (
			subpage == message('doc-subpage')
			or subjectSpace ~= 828 and subpage == message('testcases-subpage')
		)
	then
		ret = ret .. makeCategoryLink(message('strange-usage-category'))
	end
	return ret
end

return p
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