Wikipedia:Comparable Lua functions to wikitext

This is a list over comparible lua functions to wikitext parser functions and magic words.

Parser functions

Wikitext	Lua
{{#if: x | not empty | empty}}	if x then 'not empty' else 'empty' end
{{#ifeq: x | y | indentical | different}}	if 1 == 3 then 'indentical' else 'different' end
iferror
{{#ifexpr: 1+2=3 |true|false}}	if 1 + 2 == 3 then 'true' else 'false' end
[Expensive] {{#ifexist: namespace:title | exists | doesn't exist }}	[Expensive] if mw.title.new( 'title', 'namespace' ).exists == true then "exists" else "doesn't exist" end
rel2abs
{{#switch: {{{1}}} | foo = Foo | Bar }}	local cases = { default = "Bar", foo = "Foo", } local pframe = frame:getParent() local arg = pframe.args[1] cases[arg] or cases["default"]
{{#time: format | timestamp }}	mw.getContentLanguage():formatDate( 'format', 'timestamp' )
{{#timel: format | timestamp }}	mw.getContentLanguage():formatDate( 'format', 'timestamp', 1 )
titleparts

Math

Unlike in wikicode, lua does not use functions like ifexpr and expr. Add the lua operators and functions straight into your module.

Grouping

Wikicode	Lua
()	()

Numbers

Wikicode	Lua
1234.5	1234.5
2e3	2e3
pi	math.pi
e
2+2	2+2
2-1	2-1

Unary

Wikicode	Lua
not
ceil1.2	math.ceil(1.2)
trunc
floor1.2	math.floor(1.2)
abs-2	math.abs(-2)
exp43	math.exp(43)
ln2	math.log(2)
cos0.1	math.cos(0.1)
tan0.1	math.tan(0.1)
acos0.1	math.acos(0.1)
asin0.1	math.asin(0.1)
atan0.1	math.atan(0.1)

Binary

Wikicode	Lua
2^3	2^3
2*3	2*3
2/3 2div3	2/3
30mod7	30%7
+2	2
-2	-2

Logic

Wikicode	Data type	Lua	Data type
3.0=3	Integer (0 or 1)	3.0==3	Boolean (true or false)
3!=4 3<>4	Integer	3~=4	Boolean
4>3	Integer	4>3	Boolean
4>=3	Integer	4>=3	Boolean
3<=4	Integer	3<=4	Boolean
3<=4	Integer	3<=4	Boolean
and	Integer		Boolean
or	Integer		Boolean

Magic words

Date and time

Wikicode	Lua
{{CURRENTYEAR}}	os.date( "%Y" )
{{CURRENTMONTH}}	os.date( "%m" )
{{CURRENTMONTHNAME}}	mw.getContentLanguage():formatDate( 'F' )
{{CURRENTMONTHNAMEGEN}}	mw.getContentLanguage():formatDate( 'xg' )
{{CURRENTMONTHABBREV}}	mw.getContentLanguage():formatDate( 'M' )
{{CURRENTDAY}}	os.date( "%e" )
{{CURRENTDAY2}}	os.date( "%d" )
{{CURRENTDOW}}	os.date( "%w" )
{{CURRENTDAYNAME}}	mw.getContentLanguage():formatDate( 'l' )
{{CURRENTTIME}}	os.date( "%R" )
{{CURRENTHOUR}}	os.date( "%H" )
{{CURRENTWEEK}}	mw.getContentLanguage():formatDate( 'W' )
{{CURRENTTIMESTAMP}}

Technical metadata

Wikicode	Lua
{{SITENAME}}	mw.site.siteName
{{SERVER}}	mw.site.server
{{SERVERNAME}}
{{DIRMARK}}	mw.language.getContentLanguage():getDirMark()
{{SCRIPTPATH}}	mw.site.scriptPath
{{STYLEPATH}}	mw.site.stylePath
{{CURRENTVERSION}}	mw.site.currentVersion
{{CONTENTLANGUAGE}}	mw.getContentLanguage():getCode()
{{PAGEID}}	mw.title.getCurrentTitle().id
{{PAGESIZE:page name}}
{{PROTECTIONLEVEL:edit}}	[Expensive] local protection = mw.title.getCurrentTitle().protectionLevels["edit"] table.concat(protection)
{{REVISIONID}}
{{REVISIONDAY}}
{{REVISIONDAY}}
{{REVISIONMONTH}}
{{REVISIONMONTH1}}
{{REVISIONYEAR}}
{{REVISIONTIMESTAMP}}
{{REVISIONUSER}}
{{DISPLAYTITLE:title}}
{{DEFAULTSORT:sortkey}}

Statistics

Wikicode	Lua
{{NUMBEROFPAGES}}	mw.site.stats.pages
{{NUMBEROFARTICLES}}	mw.site.stats.articles
{{NUMBEROFFILES}}	mw.site.stats.files
{{NUMBEROFEDITS}}	mw.site.stats.edits
{{NUMBEROFVIEWS}}	mw.site.stats.views
{{NUMBEROFUSERS}}	mw.site.stats.users
{{NUMBEROFADMINS}}	mw.site.stats.admins
{{NUMBEROFACTIVEUSERS}}	mw.site.stats.activeUsers
[Expensive] {{PAGESINCATEGORY:categoryname}}	[Expensive] mw.site.stats.pagesInCategory( 'categoryname' )
{{NUMBERINGROUP:groupname}}	mw.site.stats.usersInGroup( 'groupname' )

Page names

Wikicode	Lua
{{FULLPAGENAME}}	mw.title.getCurrentTitle().prefixedText
{{PAGENAME}}	mw.title.getCurrentTitle().text
{{BASEPAGENAME}}	mw.title.getCurrentTitle().baseText
{{SUBPAGENAME}}	mw.title.getCurrentTitle().subpageText
{{SUBJECTPAGENAME}}	[Expensive] mw.title.getCurrentTitle().subjectPageTitle or an non expensive alternative: mw.title.getCurrentTitle().subjectNsText .. ":" .. mw.title.getCurrentTitle().text
{{TALKPAGENAME}}	[Expensive] mw.title.getCurrentTitle().talkPageTitle

Namespaces

Wikicode	Lua
{{NAMESPACE}}	mw.title.getCurrentTitle().nsText
{{NAMESPACENUMBER}}	mw.title.getCurrentTitle().namespace
{{SUBJECTSPACE}}	mw.title.getCurrentTitle().subjectNsText
{{TALKSPACE}}

URL data

Wikicode	Lua
{{localurl:page|query}}	mw.uri.localUrl( 'page', 'query' )
{{fullurl:page|query}}	mw.uri.fullUrl( 'page', 'query' )
{{canonicalurl:page|query}}	mw.uri.canonicalUrl( 'page', 'query' )
{{filepath:file name}}
{{urlencode:string|QUERY}}	mw.uri.encode( 'string', QUERY )
{{anchorencode:string}}	mw.uri.anchorEncode( 'string' )

Namespaces

Wikicode	Lua
{{ns:0}}	mw.site.namespaces[0].name
{{ns:Project}}	mw.site.namespaces.Project.name

Formatting

Wikicode	Lua
{{formatnum:number}}	mw.getContentLanguage():formatNum( number )
#dateformat
{{lc:string}}	mw.ustring.lower( 'string' )
{{lcfirst:string}}	mw.getContentLanguage():lcfirst( 'string' )
{{uc:string}}	mw.ustring.upper( 'string' )
{{ucfirst:string}}	mw.getContentLanguage():ucfirst( 'string' )
{{padleft:xyz|stringlength}}
{{padright:xyz|stringlength}}

Localisation

Wikicode	Lua
{{plural:2|is|are}}	mw.getContentLanguage():plural( 2, 'is', 'are' )
{{grammar:N|noun}}	mw.getContentLanguage():grammar( 'N', 'noun' )
{{gender:username|male|female|neutral }}	mw.getContentLanguage():gender( 'username', { 'male', 'female', 'neutral' } )
{{int:message}}	mw.message.new( 'message' ):text()
{{int:editsectionhint|MediaWiki}}	mw.message.new( 'editsectionhint', 'MediaWiki' ):text()

Miscellaneous

Wikicode	Lua
{{#language:code|inlanguage}}	mw.language.fetchLanguageName( 'code', 'inLanguage' )
{{#special:special page name}}
{{#speciale:special page name}}
{{#tag:tagname |some text |attribute1=value1 |attribute2=value2 }}	frame:extensionTag{ 'tagname', 'some text', { attribute1 = 'value1', attribute2 = 'value2' } }