Difference between revisions of "Module:Documentation"

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en>Mr. Stradivarius
(i18n for the "editors can experiment" blurb)
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-- This module implements {{documentation}}.
-- This module implements {{documentation}}.
----------------------------------------------------------------------------
-- Configuration
----------------------------------------------------------------------------
-- Here you can set the values of the parameters and messages used in this module, so that it
-- can be easily ported to other wikis.
local cfg = {}
-- Argument names
-- The following are all names of arguments that affect the behaviour of {{documentation}}.
-- The comments next to the configuration values are the effects that the argument has
-- on the module. (Not the effects of the argument names themselves.)
cfg.livepageArg = 'livepage' -- Name of the live template; used in {{template sandbox notice}}.
cfg.headingArg = 'heading' -- Custom heading used in the start box.
cfg.preloadArg = 'preload' -- Custom preload page for creating documentation.
cfg.headingStyleArg = 'heading-style' -- Custom CSS style for the start box heading.
cfg.contentArg = 'content' -- Passes documentation content directly from the {{documentation}} invocation.
cfg.linkBoxArg = 'link box' -- Specifies a custom link box (end box) or prevents it from being generated.
-- Argument values
-- The following are argument values that are checked by the module.
cfg.linkBoxOff = 'off' -- The value to send to cfg.linkBoxArg to turn the link box off.
-- Software settings
-- The following are software settings that may change from wiki to wiki. For example, the classes
-- defined in commons.css or the names of templates.
cfg.docSubpage = 'doc' -- The name of the subpage typically used for documentation pages.
cfg.sandboxSubpage = 'sandbox' -- The name of the template subpage typically used for sandboxes.
cfg.testcasesSubpage = 'testcases' -- The name of the template subpage typically used for test cases.
cfg.mainDivId = 'template-documentation' -- The "id" attribute of the main HTML "div" tag.
cfg.mainDivClasses = 'template-documentation iezoomfix' -- The CSS classes added to the main HTML "div" tag.
cfg.sandboxNoticeTemplate = 'template sandbox notice' -- The name of the template to display at the top of sandbox pages.
cfg.sandboxNoticeLivepageParam = 1 -- The parameter of the sandbox notice template to send the cfg.livepageArg to.
cfg.protectionTemplate = 'pp-template' -- The name of the template that displays the protection icon (a padlock on enwiki).
cfg.protectionTemplateArgs = {docusage = 'yes'} -- Any arguments to send to the protection template.
cfg.startBoxLinkclasses = 'mw-editsection plainlinks' -- The CSS classes used for the [view][edit][history] or [create] links in the start box.
cfg.startBoxLinkId = 'doc_editlinks' -- The HTML "id" attribute for the links in the start box.
cfg.fileDocpagePreload = 'Template:Documentation/preload-filespace' -- Preload file for documentation page in the file namespace.
cfg.docpagePreload = 'Template:Documentation/preload-filespace' -- Preload file for template documentation pages in all namespaces.
cfg.modulePreload = 'Template:Documentation/preload-module-doc' -- Preload file for Lua module documentation pages.
cfg.templateSandboxPreload = 'Template:Documentation/preload-sandbox' -- Preload file for template sandbox pages.
cfg.moduleSandboxPreload = 'Template:Documentation/preload-module-sandbox' -- Preload file for Lua module sandbox pages.
cfg.templateTestcasesPreload = 'Template:Documentation/preload-testcases' -- Preload file for template test cases pages.
cfg.moduleTestcasesPreload = 'Template:Documentation/preload-module-testcases' -- Preload file for Lua module test cases pages.
-- Settings for the {{fmbox}} template.
cfg.fmboxIdParam = 'id' -- The name of the "id" parameter of {{fmbox}}.
cfg.fmboxId = 'documentation-meta-data' -- The id sent to the "id" parameter of the {{fmbox}} template.
cfg.fmboxImageParam = 'image' -- The name of the "image" parameter of {{fmbox}}.
cfg.fmboxImageNone = 'none' -- The value to suppress image output from the "image" parameter of {{fmbox}}.
cfg.fmboxStyleParam = 'style' -- The name of the "style" parameter of {{fmbox}}.
cfg.fmboxStyle = 'background-color: #ecfcf4' -- The value sent to the style parameter of {{fmbox}}.
cfg.fmboxTextstyleParam = 'textstyle' -- The name of the "textstyle" parameter of {{fmbox}}.
cfg.fmboxTextstyle = 'font-style: italic' -- The value sent to the "textstyle parameter of {{fmbox}}.
-- Display settings
-- The following settings configure the values displayed by the module.
-- Text displayed in wikilinks.
cfg.viewLinkDisplay = 'view' -- The text to display for "view" links.
cfg.editLinkDisplay = 'edit' -- The text to display for "edit" links.
cfg.historyLinkDisplay = 'history' -- The text to display for "history" links.
cfg.purgeLinkDisplay = 'purge' -- The text to display for "purge" links.
cfg.createLinkDisplay = 'create' -- The text to display for "create" links.
cfg.sandboxLinkDisplay = 'sandbox' -- The text to display for "sandbox" links.
cfg.sandboxEditLinkDisplay = 'edit' -- The text to display for sandbox "edit" links.
cfg.sandboxCreateLinkDisplay = 'create' -- The text to display for sandbox "create" links.
cfg.compareLinkDisplay = 'diff' -- The text to display for "compare" links.
cfg.mirrorLinkDisplay = 'mirror' -- The text to display for "mirror" links.
cfg.testcasesLinkDisplay = 'testcases' -- The text to display for "testcases" links.
cfg.testcasesEditLinkDisplay = 'edit' -- The text to display for test cases "edit" links.
cfg.testcasesCreateLinkDisplay = 'create' -- The text to display for test cases "create" links.
-- Sentences used in the end box.
cfg.transcludedFromBlurb = 'The above [[Wikipedia:Template documentation|documentation]] is [[Wikipedia:Transclusion|transcluded]] from $1.' -- Notice displayed when the docs are transcluded from another page. $1 is a wikilink to that page.
cfg.createModuleDocBlurb = 'You might want to $1 a documentation page for this [[Wikipedia:Lua|Scribunto module]].' -- Notice displayed in the module namespace when the documentation subpage does not exist. $1 is a link to create the documentation page with the preload cfg.modulePreload and the display cfg.createLinkDisplay.
cfg.templatePossessive = "template's" -- Possessive case for "template".
cfg.modulePossessive = "module's" -- Possessive case for "module".
cfg.experimentBlurb = 'Editors can experiment in this $1 $2 and $3 pages.' -- Text inviting editors to experiment in sandbox and test cases pages. It is only shown in the template and module namespaces. $1 is cfg.templatePossessive or cfg.modulePossessive depending on what namespace we are in. $2 is a link to the sandbox in the format "cfg.sandboxLinkDisplay (cfg.sandboxEditLinkDisplay | cfg.compareLinkDisplay)" if the sandbox exists, and the format "cfg.sandboxLinkDisplay (cfg.sandboxCreateLinkDisplay | cfg.mirrorLinkDisplay)" if the sandbox doesn't exist. If the sandbox link doesn't exist, the create link preloads the page with cfg.templateSandboxPreload or cfg.moduleSandboxPreload depending on the current namespace. $3 is a link to the test cases page in the format "cfg.testcasesLinkDisplay (cfg.testcasesEditLinkDisplay)" if the test cases page exists, and in the format "cfg.testcasesLinkDisplay (cfg.testcasesCreateLinkDisplay)" if the test cases page doesn't exist. If the test cases page doesn't exist, the create link preloads the page with cfg.templateTestcasesPreload or cfg.moduleTestcasesPreload depending on the current namespace.
-- Other display settings
cfg.documentationIconWikitext = '[[File:Template-info.png|50px|link=|alt=Documentation icon]]' -- The wikitext for the icon shown at the top of the template.
cfg.templateNamespaceHeading = 'Template documentation' -- The heading shown in the template namespace.
cfg.moduleNamespaceHeading = 'Module documentation' -- The heading shown in the module namespace.
cfg.fileNamespaceHeading = 'Summary' -- The heading shown in the file namespace.
cfg.otherNamespacesHeading = 'Documentation' -- The heading shown in other namespaces.
----------------------------------------------------------------------------
-- End configuration
----------------------------------------------------------------------------


-- 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')
local libraryUtil = require('libraryUtil')


-- Get the config table.
local cfg = mw.loadData('Module:Documentation/config')
local i18n = mw.loadData('Module:Documentation/i18n')
local p = {}
local p = {}


-- Constants.
-- Often-used functions.
local currentTitle = mw.title.getCurrentTitle()
local ugsub = mw.ustring.gsub
local subjectSpace = mw.site.namespaces[currentTitle.namespace].subject.id -- The number of the current subject namespace.
 
-- Often-used functions
local gsub = mw.ustring.gsub
local checkType = libraryUtil.checkType


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


local function formatMessage(msg, valArray)
local function message(cfgKey, valArray, expectType)
--[[
--[[
-- Formats a message, usually from the cfg table.
-- Gets a message from the cfg table and formats it if appropriate.
-- Values from valArray can be specified in the message by using $1 for [1], $2 for [2], etc.
-- The function raises an error if the value from the cfg table is not
-- So formatMessage('Foo $2 bar $1.', {'baz', 'qux'}) will return "Foo qux bar baz."
-- 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."
--]]
--]]
checkType('formatMessage', 1, msg, 'string')
local msg = cfg[cfgKey]
checkType('formatMessage', 2, valArray, 'table')
expectType = expectType or 'string'
if type(msg) ~= expectType then
error(require('Module:TNT').format('I18n/Documentation', 'cfg-error-msg-type', cfgKey, expectType, type(msg)), 2)
end
if not valArray then
return msg
end


local function getMessageVal(match)
local function getMessageVal(match)
match = tonumber(match)
match = tonumber(match)
return valArray[match] or error('formatMessage: No value found for key $' .. match, 2)
return valArray[match] or error(require('Module:TNT').format('I18n/Documentation', 'cfg-error-msg-empty', '$' .. match, cfgKey), 4)
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
p.message = message


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


local function makeToolbar(...)
local function makeToolbar(...)
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return '<small style="font-style: normal;">(' .. table.concat(ret, ' &#124; ') .. ')</small>'
return '<small style="font-style: normal;">(' .. table.concat(ret, ' &#124; ') .. ')</small>'
end
end
p.makeToolbar = makeToolbar


----------------------------------------------------------------------------
----------------------------------------------------------------------------
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local function makeInvokeFunc(funcName)
local function makeInvokeFunc(funcName)
return function (frame)
return function (frame)
local headingArg = cfg.headingArg
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 185: Line 112:


----------------------------------------------------------------------------
----------------------------------------------------------------------------
-- Main functions
-- Load TemplateStyles
----------------------------------------------------------------------------
----------------------------------------------------------------------------


p.main = makeInvokeFunc('_main')
p.main = function(frame)
local parent = frame.getParent(frame)
local output = p._main(parent.args)
return frame:extensionTag{ name='templatestyles', args = { src= message('templatestyles-scr') } } .. output
end
 
----------------------------------------------------------------------------
-- Main function
----------------------------------------------------------------------------


function p._main(args)
function p._main(args)
local root = htmlBuilder.create()
--[[
-- 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
root
.wikitext(p.protectionTemplate())
:wikitext(p.protectionTemplate(env))
.wikitext(p.sandboxNotice(args))
: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', cfg.mainDivId)
:attr('id', message('main-div-id'))
.addClass(cfg.mainDivClasses)
:addClass(message('main-div-class'))
.wikitext(p._startBox(args))
:wikitext(p._startBox(args, env))
.wikitext(p._content(args))
:wikitext(p._content(args, env))
.tag('div')
:done()
.css('clear', 'both') -- So right or left floating items don't stick out of the doc box.
:wikitext(p._endBox(args, env))
.done()
:wikitext(p.addTrackingCategories(env))
.done()
.wikitext(p._endBox(args))
.wikitext(p.addTrackingCategories())
return tostring(root)
return tostring(root)
end
end


function p.sandboxNotice(args)
----------------------------------------------------------------------------
local sandboxNoticeTemplate = cfg.sandboxNoticeTemplate
-- Environment settings
if not (sandboxNoticeTemplate and currentTitle.subpageText == cfg.sandboxSubpage) then
----------------------------------------------------------------------------
 
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' --> '[[w:Wikipedia:Template test cases|template sandbox]] page'
-- 'sandbox-notice-pagetype-module' --> '[[w: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 = {[cfg.sandboxNoticeLivepageParam] = args[cfg.livepageArg]}})
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.contentModel == "Scribunto" then
local testcasesLinkDisplay = message('sandbox-notice-testcases-link-display')
local testcasesRunLinkDisplay = message('sandbox-notice-testcases-run-link-display')
local testcasesLink = makeWikilink(testcasesTitle.prefixedText, testcasesLinkDisplay)
local testcasesRunLink = makeWikilink(testcasesTitle.talkPageTitle.prefixedText, testcasesRunLinkDisplay)
text = text .. '<br />' .. 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
omargs.class = message('sandbox-class')
local ret = '<div style="clear: both;"></div>'
ret = ret .. messageBox.main('ombox', omargs)
return ret
end
end


function p.protectionTemplate()
function p.protectionTemplate(env)
local protectionTemplate = cfg.protectionTemplate
-- Generates the padlock icon in the top right.
if not (protectionTemplate and currentTitle.namespace == 10) then
-- @env - environment table containing title objects, etc., generated with p.getEnvironment
-- Don't display the protection template if we are not in the template namespace.
-- 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
return nil
end
end
local frame = mw.getCurrentFrame()
protectionLevels = env.protectionLevels
local function getProtectionLevel(protectionType)
if not protectionLevels then
-- Gets the protection level for the current page.
return nil
local level = frame:callParserFunction('PROTECTIONLEVEL', protectionType)
if level ~= '' then
return level
else
return nil -- The parser function returns the blank string if there is no match.
end
end
end
if getProtectionLevel('move') == 'sysop' or getProtectionLevel('edit') then
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.
-- The page is full-move protected, or full, template, or semi-protected.
return frame:expandTemplate{title = protectionTemplate, args = cfg.protectionTemplateArgs}
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
----------------------------------------------------------------------------
-- Start box
----------------------------------------------------------------------------


p.startBox = makeInvokeFunc('_startBox')
p.startBox = makeInvokeFunc('_startBox')


function p._startBox(args)
function p._startBox(args, env)
-- Arg processing from {{documentation}}.
--[[
local preload = args[cfg.preloadArg] -- Allow custom preloads.
-- This function generates the start box.
local heading = args[cfg.headingArg] -- Blank values are not removed.
-- @args - a table of arguments passed by the user
local headingStyle = args[cfg.headingStyleArg]
-- @env - environment table containing title objects, etc., generated with p.getEnvironment
local content = args[cfg.contentArg]
--  
local docspace = p.docspace()
-- The actual work is done by p.makeStartBoxLinksData and p.renderStartBoxLinks which make
local docname = args[1] -- Other docname, if fed.
-- the [view] [edit] [history] [purge] links, and by p.makeStartBoxData and p.renderStartBox
local templatePage = p.templatePage()
-- which generate the box HTML.
 
--]]
-- Arg processing from {{documentation/start box2}}.
env = env or p.getEnvironment(args)
local docpage
local links
if docname then
local content = args.content
docpage = docname
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
else
local namespace = docspace or currentTitle.nsText
-- User specified no heading.
local pagename = templatePage or currentTitle.text
return nil
docpage = namespace .. ':' .. pagename .. '/' .. cfg.docSubpage
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
if docTitle.isRedirect then
docTitle = docTitle.redirectTarget
end
local data = {}
data.title = title
data.docTitle = docTitle
-- View, display, edit, and purge links if /doc exists.
data.viewLinkDisplay = i18n['view-link-display']
data.editLinkDisplay = i18n['edit-link-display']
data.historyLinkDisplay = i18n['history-link-display']
data.purgeLinkDisplay = i18n['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 = i18n['create-link-display']
return data
end


-- Build the start box div.
function p.renderStartBoxLinks(data)
local sbox = htmlBuilder.create('div')
--[[
sbox
-- Generates the [view][edit][history][purge] or [create] links from the data table.
.css('padding-bottom', '3px')
-- @data - a table of data generated by p.makeStartBoxLinksData
.css('border-bottom', '1px solid #aaa')
--]]
.css('margin-bottom', '1ex')
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


-- Make the heading.
local ret
local hspan = sbox.tag('span')
local docTitle = data.docTitle
if headingStyle then
local title = data.title
hspan.cssText(headingStyle)
if docTitle.exists then
elseif subjectSpace == 10 then
local viewLink = makeWikilink(docTitle.prefixedText, data.viewLinkDisplay)
-- We are in the template or template talk namespaces.
local editLink = makeUrlLink(docTitle:fullUrl{action = 'edit'}, data.editLinkDisplay)
hspan
local historyLink = makeUrlLink(docTitle:fullUrl{action = 'history'}, data.historyLinkDisplay)
.css('font-weight', 'bold')
local purgeLink = makeUrlLink(title:fullUrl{action = 'purge'}, data.purgeLinkDisplay)
.css('fond-size', '125%')
ret = '[%s] [%s] [%s] [%s]'
ret = escapeBrackets(ret)
ret = mw.ustring.format(ret, viewLink, editLink, historyLink, purgeLink)
else
else
hspan.css('font-size', '150%')
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
end
if heading then
if heading then
-- "heading" has data.
data.heading = heading
hspan.wikitext(heading)
elseif subjectSpace == 10 then -- Template namespace
elseif subjectSpace == 10 then -- Template namespace
hspan.wikitext(cfg.documentationIconWikitext .. ' ' .. cfg.templateNamespaceHeading)
data.heading = i18n['template-namespace-heading']
elseif subjectSpace == 828 then -- Module namespace
elseif subjectSpace == 828 then -- Module namespace
hspan.wikitext(cfg.documentationIconWikitext .. ' ' .. cfg.moduleNamespaceHeading)
data.heading = i18n['module-namespace-heading']
elseif subjectSpace == 6 then -- File namespace
elseif subjectSpace == 6 then -- File namespace
hspan.wikitext(cfg.fileNamespaceHeading)
data.heading = i18n['file-namespace-heading']
else
else
hspan.wikitext(cfg.otherNamespaceHeading)
data.heading = i18n['other-namespaces-heading']
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
end
return data
end


-- Add the [view][edit][history][purge] or [create] links.
function p.renderStartBox(data)
-- Check for the content parameter first, as we don't need the links if the documentation
-- Renders the start box html.
-- content is being entered directly onto the template page.
-- @data - a table of data generated by p.makeStartBoxData.
if not content then
local sbox = mw.html.create('div')
local lspan = sbox.tag('span') -- lspan is short for "link span".
sbox
lspan
:addClass(message('header-div-class'))
.addClass(cfg.startBoxLinkclasses)
:tag('div')
.attr('id', cfg.startBoxLinkId)
:addClass(message('heading-div-class'))
if docExist then
:wikitext(data.heading)
local viewLink = makeWikilink(docpage, cfg.viewLinkDisplay)
local links = data.links
local editLink = makeUrlLink(docTitle:fullUrl{action = 'edit'}, cfg.editLinkDisplay)
if links then
local historyLink = makeUrlLink(docTitle:fullUrl{action = 'history'}, cfg.historyLinkDisplay)
sbox
local purgeLink = makeUrlLink(currentTitle:fullUrl{action = 'purge'}, cfg.purgeLinkDisplay)
:tag('div')
local text = '[%s] [%s] [%s] [%s]'
:addClass(data.linksClass)
text = text:gsub('%[', '&#91;') -- Replace square brackets with HTML entities.
:attr('id', data.linksId)
text = text:gsub('%]', '&#93;')
:wikitext(links)
lspan.wikitext(mw.ustring.format(text, viewLink, editLink, historyLink, purgeLink))
else
if not preload then
if subjectSpace == 6 then -- File namespace
preload = cfg.fileDocpagePreload
else
preload = cfg.docpagePreload
end
end
lspan.wikitext(makeUrlLink(docTitle:fullUrl{action = 'edit', preload = preload}, cfg.createLinkDisplay))
end
end
end
return tostring(sbox)
return tostring(sbox)
end
end
----------------------------------------------------------------------------
-- Documentation content
----------------------------------------------------------------------------


p.content = makeInvokeFunc('_content')
p.content = makeInvokeFunc('_content')


function p._content(args)
function p._content(args, env)
local content = args[cfg.contentArg]
-- 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 = p.docspace() .. ':' .. p.templatePage() .. '/' .. cfg.docSubpage
content = args._content or mw.getCurrentFrame():expandTemplate{title = docTitle}
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'  
local cbox = mw.html.create('div')
cbox
:addClass(message('content-div-class'))
:wikitext('\n' .. (content or '') .. '\n')
return tostring(cbox)
end
end


p.endBox = makeInvokeFunc('_endBox')
p.contentTitle = makeInvokeFunc('_contentTitle')
 
function p._endBox(args)
-- Argument processing in {{documentation}}.
local content = args[cfg.contentArg]
local linkBox = args[cfg.linkBoxArg] -- So "link box=off" works.
local docspace = p.docspace()
local docname = args[1] -- Other docname, if fed.
local templatePage = p.templatePage()


-- Argument processing in {{documentation/end box2}}.
function p._contentTitle(args, env)
local docpageRoot = (docspace or currentTitle.nsText) .. ':' .. (templatePage or currentTitle.text)
env = env or p.getEnvironment(args)
local docpage
local docTitle = env.docTitle
if docname then
if not args.content and docTitle and docTitle.exists then
docpage = docname
return docTitle.prefixedText
else
else
docpage = docpageRoot .. '/' .. cfg.docSubpage
return ''
end
end
local docTitle = mw.title.new(docpage)
end
local docExist = docTitle.exists
local docnameFed = args[1] and true
local sandbox = docpageRoot .. '/' .. cfg.sandboxSubpage
local testcases = docpageRoot .. '/' .. cfg.testcasesSubpage
templatePage = currentTitle.nsText .. ':' .. templatePage


-- Output from {{documentation/end box}}
----------------------------------------------------------------------------
-- 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
--]=]
-- First, check whether we should output the end box at all. Add the end box by default if the documentation
-- Get environment data.
-- exists or if we are in the user, module or template namespaces.
env = env or p.getEnvironment(args)
if linkBox == cfg.linkBoxOff or not (docExist or subjectSpace == 2 or subjectSpace == 828 or subjectSpace == 10) then
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
return nil
end
end


-- Assemble the arguments for {{fmbox}}.
-- Assemble the footer text field.
local fmargs = {}
fmargs[cfg.fmboxIdParam] = cfg.fmboxId -- Sets fmargs.id = 'documentation-meta-data'
fmargs[cfg.fmboxImageParam] = cfg.fmboxImageNone -- Sets fmargs.image = 'none'
fmargs[cfg.fmboxStyleParam] = cfg.fmboxStyle -- Sets fmargs.style = 'background-color: #ecfcf4'
fmargs[cfg.fmboxTextstyleParam] = cfg.fmboxTextstyle -- Sets fmargs.textstyle = 'font-style: italic;'
 
-- 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'}, cfg.editLinkDisplay)
-- Add sandbox and testcases links.
local historyLink = makeUrlLink(docTitle:fullUrl{action = 'history'}, cfg.historyLinkDisplay)
-- "Editors can experiment in this template's sandbox and testcases pages."
text = text .. formatMessage(cfg.transcludedFromBlurb, {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 = cfg.modulePreload}, cfg.createLinkDisplay)
-- "Please add categories to the /doc subpage."
text = text .. formatMessage(cfg.createModuleDocBlurb, {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 cfg.modulePossessive or cfg.templatePossessive
local sandboxTitle = mw.title.new(sandbox)
if sandboxTitle.exists then
local sandboxLink = makeWikilink(sandbox, cfg.sandboxLinkDisplay)
local sandboxEditLink = makeUrlLink(sandboxTitle:fullUrl{action = 'edit'}, cfg.sandboxEditLinkDisplay)
local compareLink = makeUrlLink(mw.title.new('Special:ComparePages'):fullUrl{page1 = templatePage, page2 = sandbox}, cfg.compareLinkDisplay)
sandboxLinks = sandboxLink .. ' ' .. makeToolbar(sandboxEditLink, compareLink)
else
local sandboxPreload = subjectSpace == 828 and cfg.moduleSandboxPreload or cfg.templateSandboxPreload
local sandboxCreateLink = makeUrlLink(sandboxTitle:fullUrl{action = 'edit', preload = sandboxPreload}, cfg.sandboxCreateLinkDisplay)
local mirrorSummary = 'Create sandbox version of ' .. makeWikilink(templatePage)
local mirrorLink = makeUrlLink(sandboxTitle:fullUrl{action = 'edit', preload = templatePage, summary = mirrorSummary}, cfg.mirrorLinkDisplay)
sandboxLinks = cfg.sandboxLinkDisplay .. ' ' .. makeToolbar(sandboxCreateLink, mirrorLink)
end
local testcaseTitle = mw.title.new(testcases)
if testcaseTitle.exists then
local testcasesLink = makeWikilink(testcases, cfg.testcasesLinkDisplay)
local testcasesEditLink = makeUrlLink(testcaseTitle:fullUrl{action = 'edit'}, cfg.testcasesEditLinkDisplay)
testcasesLinks = testcasesLink .. ' ' .. makeToolbar(testcasesEditLink)
else
local testcasesPreload = subjectSpace == 828 and cfg.moduleTestcasesPreload or cfg.templateTestcasesPreload
local testcasesCreateLink = makeUrlLink(testcaseTitle:fullUrl{action = 'edit', preload = testcasesPreload}, cfg.testcasesCreateLinkDisplay)
testcasesLinks = cfg.testcasesLinkDisplay .. ' ' .. makeToolbar(testcasesCreateLink)
end
text = text .. formatMessage(cfg.experimentBlurb, {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
text = text .. 'Please add categories to the ' .. makeWikilink(docpage, '/' .. cfg.docSubpage) .. ' subpage.'
end
end
-- Show the "subpages" link.
text = text .. ' ' .. (p.makeSubpagesBlurb(args, env) or '') --"Subpages of this template"
if subjectSpace ~= 6 then -- Don't show the link in file space.
local printBlurb = p.makePrintBlurb(args, env) -- Two-line blurb about print versions of templates.
local pagetype
if printBlurb then
if subjectSpace == 10 then
text = text .. '<br />' .. printBlurb
pagetype = 'template'
elseif subjectSpace == 828 then
pagetype = 'module'
else
pagetype = 'page'
end
text = text .. ' ' .. makeWikilink('Special:PrefixIndex/' .. templatePage .. '/', 'Subpages of this ' .. pagetype)
end
-- Show the "print" link if it exists.
local printPage = templatePage .. '/Print'
local printTitle = mw.title.new(printPage)
if printTitle.exists then
text = text .. '<br />A [[Help:Books/for experts#Improving the book layout|print version]] of this template exists at '
.. makeWikilink(printPage, '/Print') .. '. If you make a change to this template, please update the print version as well.'
.. '[[Category:Templates with print versions]]'
end
end
end
end
end
end
fmargs.text = text


-- Return the fmbox output.
local ebox = mw.html.create('div')
return messageBox.main('fmbox', fmargs)
ebox
:addClass(message('footer-div-class'))
:wikitext(text)
return tostring(ebox)
end
end


function p.addTrackingCategories()
function p.makeDocPageBlurb(args, env)
-- Check if {{documentation}} is transcluded on a /doc or /testcases page.
--[=[
local ret = ''
-- Makes the blurb "This documentation is transcluded from [[Template:Foo]] (edit, history)".
local subpage = currentTitle.subpageText
-- @args - a table of arguments passed by the user
if subpage == cfg.docSubpage or subpage == cfg.testcasesSubpage then
-- @env - environment table containing title objects, etc., generated with p.getEnvironment
local sort = (currentTitle.namespace == 0 and 'Main:' or '') .. currentTitle.prefixedText -- Sort on namespace.
--
ret = ret .. makeWikilink('Category:Wikipedia pages with strange ((documentation)) usage', sort)
-- Messages:
-- 'edit-link-display' --> 'edit'
-- 'history-link-display' --> 'history'
-- 'transcluded-from-blurb' -->
-- 'The above [[w:Wikipedia:Template documentation|documentation]]
-- is [[w: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 [[w:Wikipedia:Lua|Scribunto module]].'
--]=]
local docTitle = env.docTitle
if not docTitle or args.content 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 = i18n['edit-link-display']
local editLink = makeUrlLink(editUrl, editDisplay)
local historyUrl = docTitle:fullUrl{action = 'history'}
local historyDisplay = i18n['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 = i18n['create-link-display']
local createLink = makeUrlLink(createUrl, createDisplay)
ret = message('create-module-doc-blurb', {createLink})
.. '<br />'
end
end
return ret
return ret
end
end


function p.docspace()
function p.makeExperimentBlurb(args, env)
-- Determines the namespace of the documentation.
--[[
if subjectSpace == 0 or subjectSpace == 6 or subjectSpace == 8 or subjectSpace == 14 then
-- Renders the text "Editors can experiment in this template's sandbox (edit | diff) and testcases (edit) pages."
-- Pages in the Article, File, MediaWiki or Category namespaces must have their
-- @args - a table of arguments passed by the user
-- /doc, /sandbox and /testcases pages in talk space.
-- @env - environment table containing title objects, etc., generated with p.getEnvironment
return mw.site.namespaces[subjectSpace].talk.name
--
-- 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
else
return currentTitle.subjectNsText
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
end
local docPathLink = makeWikilink(docTitle.prefixedText, message('doc-link-display'))
return message('add-categories-blurb', {docPathLink})
end
end


function p.templatePage()
function p.makeSubpagesBlurb(args, env)
-- Determines the template page. No namespace or interwiki prefixes are included.
--[[
local subpage = currentTitle.subpageText
-- Generates the "Subpages of this template" link.
if subpage == cfg.sandboxSubpage or subpage == cfg.testcasesSubpage then
-- @args - a table of arguments passed by the user
return currentTitle.baseText
-- @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
else
return currentTitle.text
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
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
end


return p
return p

Latest revision as of 05:36, 19 July 2021

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 i18n = mw.loadData('Module:Documentation/i18n')
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(require('Module:TNT').format('I18n/Documentation', 'cfg-error-msg-type', cfgKey, expectType, type(msg)), 2)
	end
	if not valArray then
		return msg
	end

	local function getMessageVal(match)
		match = tonumber(match)
		return valArray[match] or error(require('Module:TNT').format('I18n/Documentation', 'cfg-error-msg-empty', '$' .. match, 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

----------------------------------------------------------------------------
-- Load TemplateStyles
----------------------------------------------------------------------------

p.main = function(frame)
	local parent = frame.getParent(frame)
	local output = p._main(parent.args)
	return frame:extensionTag{ name='templatestyles', args = { src= message('templatestyles-scr') } } .. output
end

----------------------------------------------------------------------------
-- Main function
----------------------------------------------------------------------------

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-class'))
			:wikitext(p._startBox(args, env))
			:wikitext(p._content(args, env))
			: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' --> '[[w:Wikipedia:Template test cases|template sandbox]] page'
	-- 'sandbox-notice-pagetype-module' --> '[[w: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.contentModel == "Scribunto" then
			local testcasesLinkDisplay = message('sandbox-notice-testcases-link-display')
			local testcasesRunLinkDisplay = message('sandbox-notice-testcases-run-link-display')
			local testcasesLink = makeWikilink(testcasesTitle.prefixedText, testcasesLinkDisplay)
			local testcasesRunLink = makeWikilink(testcasesTitle.talkPageTitle.prefixedText, testcasesRunLinkDisplay)
			text = text .. '<br />' .. 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
	omargs.class = message('sandbox-class')
	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
	if docTitle.isRedirect then 
		docTitle = docTitle.redirectTarget
	end

	local data = {}
	data.title = title
	data.docTitle = docTitle
	-- View, display, edit, and purge links if /doc exists.
	data.viewLinkDisplay = i18n['view-link-display']
	data.editLinkDisplay = i18n['edit-link-display']
	data.historyLinkDisplay = i18n['history-link-display']
	data.purgeLinkDisplay = i18n['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 = i18n['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 = i18n['template-namespace-heading']
	elseif subjectSpace == 828 then -- Module namespace
		data.heading = i18n['module-namespace-heading']
	elseif subjectSpace == 6 then -- File namespace
		data.heading = i18n['file-namespace-heading']
	else
		data.heading = i18n['other-namespaces-heading']
	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
		:addClass(message('header-div-class'))
		:tag('div')
			:addClass(message('heading-div-class'))
			:wikitext(data.heading)
	local links = data.links
	if links then
		sbox
			:tag('div')
				: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}
	end
	-- The line breaks below are necessary so that "=== Headings ===" at the start and end
	-- of docs are interpreted correctly.
	local cbox = mw.html.create('div')
	cbox
		:addClass(message('content-div-class'))
		:wikitext('\n' .. (content or '') .. '\n')
	return tostring(cbox)
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
	--]=]
	
	-- 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 footer 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

	local ebox = mw.html.create('div')
	ebox
		:addClass(message('footer-div-class'))
		:wikitext(text)
	return tostring(ebox)
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 [[w:Wikipedia:Template documentation|documentation]] 
	-- is [[w: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 [[w:Wikipedia:Lua|Scribunto module]].'
	--]=]
	local docTitle = env.docTitle
	if not docTitle or args.content 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 = i18n['edit-link-display']
		local editLink = makeUrlLink(editUrl, editDisplay)
		local historyUrl = docTitle:fullUrl{action = 'history'}
		local historyDisplay = i18n['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 = i18n['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