Module:Languages

--[=[ Not globally exposed. Internal function only.

language_subpages( frame, transform, options ) Parameters

   frame:     The frame that was passed to the method invoked. The first argument or the page argument will be respected.
   transform: A transform function. Example: function( basepagename, subpagename, code, langname ) end
   options:   An object with options. Example: { abort= { on=function() end, time=0.8 }  }
       Following options are available:
       abort: Aborts iterating over the subpages if one of the conditions is met. If the process is aborted, nil is returned!
           on: Function to be called if an abort-condition was met.
           cycles: The maximum number of subpages to run over.
           time: Maximum time to spend running over the subpages.

]=] function language_subpages( frame, transform, options )

   local args, pargs, options = frame.args, ( frame:getParent() or {} ).args or {}, options or {};
   local title = args.page or args[1] or pargs.page or pargs[1] or "";
   local abort = options.abort or {};
   local at, clock = type( abort.on ), os.clock();
   local ac = function()
       if  at == 'function' or ( at == 'table' and getmetatable(abort.on).__call ) then
           abort.on();
       end
   end
   local tt = type( transform );
   local page = require( 'Module:Page' );

   title = page.clean(title);

   if tt == 'function' or ( tt == 'table' and getmetatable(transform).__call ) then
       local fetch, pages, langcode, langname = mw.language.fetchLanguageName, {};

--[==[

    / \
   / | \
  /  ·  \
  ¯¯¯¯¯¯¯
  Page.subpages() no longer works because it attempted to parse the HTML content generated by
  calling the parser function "Special:Prefixindex:" which is no longer expanded in Lua but
  converted to a "stripped tag" (containing a unique identifier surrounded by ASCII DEL characters)
  representing the tag name and its parameters.
  The actual expansion of stripped tags can no longer be performed in Lua.
  Now unstripping these tags just kills ALL these tags (except "wiki" tags) instead of performing
  their expansion by running the extension code. Only MediaWiki can unstrip these tags in texts after
  they have been returned by Lua.
  For this reason, page.subpages() is now completely empty (Module:Page no longer works).
  This cannot be bypassed, except by using a Scribunto extension library if lifting the limits set by mw.unstrip.
  Note that "Special:Prefixindex:" is also costly, even if it just requires a single database query to
  get all subpages, instead of one costly #ifexist or one costly mw.title() property reading per
  tested subpage to know if it exists.
  For now there's still no reliable way to get a list of subpages, or performing queries similar to
  the Special:Prefixindex page or list members of a category like when viewing a category page.
  Ideally, there should exist a method for such queries on Title objects returned by the mw.title library;
  but for now there's none.
  In Lua now, the only expansion possible with an immediate effect is the expansion of standard templates,
  all special tags or special pages, or parser function extensions do not work (Only the #expr parser
  function is supported by using an external Scribunto library).

--]==]

       for pg in page.subpages( title, { ignoreNS=true } ) do
           if abort.cycles then
               abort.cycles = abort.cycles - 1
               if 0 == abort.cycles then return ac()  end
           end
           if abort.time then
               if (os.clock() - clock) > abort.time then return ac()  end
           end
           if mw.ustring.len( pg ) <= 12 then
               langcode = string.lower( pg );
               langname = fetch( langcode );
               if langname ~=  then
                   table.insert( pages, transform( title, pg, langcode, langname ) );
               end
           end
       end
       return pages;
   end
   return {};

end

function cloneArgs(frame)

   local args, pargs = {}, {}
   for k,v in pairs( frame.args ) do args[k] = v end
   if frame:getParent() then
       for k,v in pairs( frame:getParent().args ) do pargs[k] = v end
   end
   return args, pargs;

end

local p = {};

--[=[ Usage: ]=] function p.internal(frame)

   pages = language_subpages( frame, function( title, page, code, name )
       return mw.ustring.format( '%s',
           code, code, code, title, page, name
       );
   end);
   return table.concat( pages, ' · ' );

end

--[=[ Usage: ]=] function p.external(frame)

   pages = language_subpages( frame, function( title, page, code, name )
       return mw.ustring.format( '[%s/%s %s]',
           code, code, code, tostring( mw.uri.fullUrl( title ) ), page:gsub( ' ', '_' ), name
       );
   end);
   return table.concat( pages, ' | ' );

end

--[=[ forEachLanguage

This function iterates over all language codes known to MediaWiki based on a maintained list replacing patterns in a pattern-string for each language

Usage string to insert before iterationpatternstringseparator string between iterationspatternstringseparator string between iterationspatternstringseparator string between iterationspatternstringseparator string between iterationspatternstringseparator string between iterationspatternstringseparator string between iterationspatternstringseparator string between iterationspatternstringseparator string between iterationspatternstringseparator string between iterationspatternstringseparator string between iterationspatternstringseparator string between iterationspatternstringseparator string between iterationspatternstringseparator string between iterationspatternstringseparator string between iterationspatternstringseparator string between iterationspatternstringseparator string between iterationspatternstringseparator string between iterationspatternstringseparator string between iterationspatternstringseparator string between iterationspatternstringseparator string between 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Parameters

   pattern: A pattern string which is processed for each language and which is concatenated at the end and returned as one string
   before: A string that is inserted before the concatenated result
   after: A string that is inserted after the concatenated result
   sep: A string that is inserted between each line created from the pattern while iterating (like ProcessedPattern_sep_ProcessedPattern_sep_ProcessedPattern)
   inLang: Langcode to use for $lnTrP and $lnTrUC1
   preprocess: if set to a non-empty value, the output will be preprocessed before being returned.

Warning

   The output is still not prepreprocessed by default: so parser functions and magic keywords generated by the pattern are still not executed and replaced,
   and template transclusions are still not expanded (see examples in other functions in this module).
   When using this function directly from a MediaWiki page or template, this means it is only possible to use patterns generating basic MediaWiki formatting
   or HTML tags. It you want the output to be preprocessed (in the given frame), set the preprocess parameter to a non-empty string.
   

Patterns

   $lc - language code such as en or de
   $lnP - language name in own language (autonym)
   $lnUC1 - language name in own language (autonym), first letter upper case
   $lnTrP - language name translated to the language requested by language code passed to inLang
   $lnTrUC1 - language name translated to the language requested by language code passed to inLang, first letter upper case

Example

   Qafár afАҧсшәаbahasa ambonAcèhадыгабзэадыгабзэتونسي/TûnsîتونسيTûnsîAfrikaansAkanGegëAlemannischтÿштÿк алтай тилአማርኛPangcaharagonésÆngliscअङ्गिकाالعربيةܐܪܡܝܐmapudungunجازايريةالدارجةمصرىঅসমীয়াAmerican sign languageasturianuAtikamekwаварKotavaअवधीAymar aruazərbaycancaتۆرکجهбашҡортсаBaliBoarischžemaitėškaBatak TobaBatak Tobaجهلسری بلوچیBikol Centralбеларускаябеларуская (тарашкевіца)‎беларуская (тарашкевіца)‎българскиروچ کپتین بلوچیभोजपुरीभोजपुरीBislamaBanjarbamanankanবাংলাབོད་ཡིགবিষ্ণুপ্রিয়া মণিপুরীبختیاریbrezhonegBráhuíbosanskiBatak MandailingIriga Bicolanoᨅᨔ ᨕᨘᨁᨗбуряадcatalàChavacano de ZamboangaMìng-dĕ̤ng-ngṳ̄нохчийнCebuanoChamoruChoctawᏣᎳᎩTsetsêhestâheseکوردیcorsuCapiceñoNēhiyawēwin / ᓀᐦᐃᔭᐍᐏᐣqırımtatarcaкъырымтатарджа (Кирилл)‎qırımtatarca (Latin)‎češtinakaszëbscziсловѣньскъ / ⰔⰎⰑⰂⰡⰐⰠⰔⰍⰟЧӑвашлаCymraegdanskDeutschÖsterreichisches DeutschSchweizer HochdeutschDeutsch (Sie-Form)‎ThuɔŋjäŋZazakidolnoserbskiDusun Bundu-liwanडोटेलीދިވެހިބަސްཇོང་ཁeʋegbeEmiliànΕλληνικάemiliàn e rumagnòlEnglishCanadian EnglishBritish EnglishEsperantoespañolespañol de América Latinaespañol (formal)‎eestieuskaraestremeñuفارسیFulfuldesuomimeänkieliVõroNa Vosa Vakavitiføroysktfrançaisfrançais cadienarpetanNordfriiskfurlanFryskGaeilgeGagauz贛語赣语（简体）‎贛語（繁體）‎kriyòl gwiyannenGàidhliggalegoگیلکیAvañe'ẽगोंयची कोंकणी / Gõychi Konknniगोंयची कोंकणीGõychi KonknniBahasa Hulontalo𐌲𐌿𐍄𐌹𐍃𐌺Ἀρχαία ἑλληνικὴAlemannischગુજરાતીGaelgHausa客家語/Hak-kâ-ngîHawaiʻiעבריתहिन्दीFiji HindiFiji HindiIlonggoHiri MotuhrvatskiHunsrikhornjoserbsceKreyòl ayisyenmagyarmagyar (formal)‎հայերենԱրեւմտահայերէնOtsihererointerlinguaBahasa IndonesiaInterlingueIgboꆇꉙIñupiakᐃᓄᒃᑎᑐᑦinuktitutIlokanoГӀалгӀайIdoíslenskaitalianoᐃᓄᒃᑎᑐᑦ/inuktitut日本語Patoisla .lojban.jyskJawaქართულიQaraqalpaqshaTaqbaylitАдыгэбзэАдыгэбзэKabɩyɛKongoکھوارGĩkũyũKırmanckiKwanyamaဖၠုံလိက်қазақшаقازاقشا (تٴوتە)‏قازاقشا (جۇنگو)‏қазақша (кирил)‎қазақша (Қазақстан)‎qazaqşa (latın)‎qazaqşa (Türkïya)‎kalaallisutភាសាខ្មែរಕನ್ನಡ한국어조선말Перем КомиKanuriкъарачай-малкъарKrioKinaray-akarjalकॉशुर / کٲشُرکٲشُرकॉशुरRipoarischkurdîكوردي (عەرەبی)‏kurdî (latînî)‎къумукъкомиkernowekКыргызчаLatinaLadinoLëtzebuergeschлаккулезгиLingua Franca NovaLugandaLimburgsLigureLīvõ kēļلەکیLadinlumbaartlingálaລາວSiloziلۊری شومالیlietuviųlatgaļuMizo ţawngلئری دوٙمینیlatviešu文言LazuriमैथिलीBasa BanyumasanмокшеньMalagasyEbonолык марийMāoriMinangkabauмакедонскиമലയാളംмонголꯃꯤꯇꯩ ꯂꯣꯟဘာသာ မန်молдовеняскэमराठीкырык марыBahasa MelayuMaltiMvskokeMirandésမြန်မာဘာသာэрзяньمازِرونیDorerin NaoeroNāhuatlBân-lâm-gúNapulitanonorsk bokmålPlattdüütschNedersaksiesनेपालीनेपाल भाषाOshiwamboNiuēNederlandsNederlands (informeel)‎norsk nynorsknorskNovialߒߞߏNouormandSesotho sa LeboaDiné bizaadChi-ChewaNyungaoccitanLivvinkarjalaOromooଓଡ଼ିଆИронਪੰਜਾਬੀPangasinanKapampanganPapiamentuPicardDeitschPlautdietschPälzischपालिNorfuk / PitkernpolskiPiemontèisپنجابیΠοντιακάPrūsiskanپښتوportuguêsportuguês do BrasilRuna SimiRuna shimiRumagnôlTarifitrumantschromani čhibKirundiromânăarmãneashtitarandíneрусскийрусиньскыйarmãneashtiVlăheşteВлахестеVlăheşteKinyarwandaसंस्कृतम्саха тылаᱥᱟᱱᱛᱟᱲᱤsardusicilianuScotsسنڌيSassaresuکوردی خوارگdavvisámegiellaCmique ItomKoyraboro SenniSängöžemaitėškasrpskohrvatski / српскохрватскиTašlḥiyt/ⵜⴰⵛⵍⵃⵉⵜTašlḥiytⵜⴰⵛⵍⵃⵉⵜၽႃႇသႃႇတႆး tacawitසිංහලSimple EnglishslovenčinaسرائیکیسرائیکیslovenščinaSchläschGagana SamoaåarjelsaemienanarâškielâchiShonaSoomaaligashqipсрпски / srpskiсрпски (ћирилица)‎srpski (latinica)‎SranantongoSiSwatiSesothoSeelterskсебертатарSundasvenskaKiswahiliślůnskiSakizayaதமிழ்TayalತುಳುతెలుగుtetunтоҷикӣтоҷикӣtojikīไทยትግርኛTürkmençeTagalogтолышә зывонSetswanalea faka-TongaTok PisinTürkçeṪuroyoSeediqXitsongaтатарча/tatarçaтатарчаtatarçachiTumbukaTwireo tahitiтыва дылⵜⴰⵎⴰⵣⵉⵖⵜудмуртئۇيغۇرچە / UyghurcheئۇيغۇرچەUyghurcheукраїнськаاردوoʻzbekcha/ўзбекчаўзбекчаoʻzbekchaTshivendavènetovepsän kel’Tiếng ViệtWest-VlamsMainfränkischVolapükVaďďaVõrowalonWinarayWolof吴语хальмгisiXhosaმარგალურიsaisiyatייִדישYorùbá粵語VahcuenghZeêuwsⵜⴰⵎⴰⵣⵉⵖⵜ ⵜⴰⵏⴰⵡⴰⵢⵜ中文文言中文（中国大陆）‎中文（简体）‎中文（繁體）‎中文（香港）‎Bân-lâm-gú中文（澳門）‎中文（马来西亚）‎中文（新加坡）‎中文（台灣）‎粵語isiZulu

]=]

-- =p.forEachLanguage({ args= { pattern = "$lc - $lnTrP\n", inLang = "en" } }) function p.forEachLanguage(frame)

   local l = require( "Module:Languages/List" )

   local ret = {}
   local lang    = mw.language
   local line
   local pattern = frame.args.pattern   or frame.args[1] or ""
   local prefix  = frame.args.before    or frame.args[2] or ""
   local postfix = frame.args.after     or frame.args[3] or ""
   local sep     = frame.args.sep       or frame.args.separator or frame.args[4] or ""
   local inLang  = frame.args.inLang    or frame.args[5] or nil
   local preprocess = frame.args.preprocess or frame.args[6] or ""

   local langNameUCFirstReq           = not not pattern:find( "$lnUC1", 1, true )
   local langNameReq                  = not not pattern:find( "$lnP", 1, true ) or langNameUCFirstReq
   local langNameTranslatedUCFirstReq = not not pattern:find( "$lnTrUC1", 1, true )
   local langNameTranslatedReq        = not not pattern:find( "$lnTrP", 1, true ) or langNameTranslatedUCFirstReq
   local contentLangInstance = mw.language.getContentLanguage()
   local inLangLangInstance
   local l = mw.language.fetchLanguageNames() -- autonyms
   local lTr
   local lcIdList = require( 'Module:Languages/List' ).getSortedList( l )

   if langNameTranslatedReq then
       inLangLangInstance = --[==[
           mw.getLanguage( inLang ) -- Quota hit in :ucfirst() if using too many langInstances
           --]==] contentLangInstance
       lTr = mw.language.fetchLanguageNames( inLang ) -- translated names
   end

   for _, lcId in pairs( lcIdList ) do
       local subst = lcId:gsub('%%', '%%%%')
       line = pattern:gsub( "%$lc", subst )
       local langName, langInstance
       -- autonym (name of lcId in locale lcId)
       if langNameReq then
           langName = l[lcId]
           subst = langName:gsub('%%', '%%%%')
           line = line:gsub( "%$lnP", subst )
       end
       if langNameUCFirstReq then
           langInstance = --[==[
               mw.getLanguage( lcId ) -- Quota hit in :ucfirst() if using too many langInstances
               --]==] contentLangInstance
           langName = langInstance:ucfirst( langName )
           subst = langName:gsub('%%', '%%%%')
           line = line:gsub( "%$lnUC1", subst )
       end

       -- translated name (name of lcId in locale inLang)
       if langNameTranslatedReq then
           langName = lTr[lcId]
           subst = langName:gsub('%%', '%%%%')
           line = line:gsub( "%$lnTrP", subst )
       end
       if langNameTranslatedUCFirstReq then
           langName = inLangLangInstance:ucfirst( langName )
           subst = langName:gsub('%%', '%%%%')
           line = line:gsub( "%$lnTrUC1", subst )
       end

       table.insert(ret, line)
   end
   ret = prefix .. table.concat( ret, sep ) .. postfix
   if preprocess ~=  then
       ret = frame:preprocess(ret)
   end
   return ret

end

--[=[

Provide logic for Template:Lle (Language Links external, to be substituted, language names written exactly as #language would provide them)

]=] function p.lle(frame)

   local ret
   local pattern = "{{subst:#ifexist:{{{1}}}/$lc|[{{fullurl:{{{1}}}/$lc}} $lnP] {{subst:!}} }}"
   ret = p.forEachLanguage({ args= { pattern = pattern } })
   ret = frame:preprocess(ret)
   return ret

end

--[=[

Provide logic for Template:Ll (Language Links, to be substituted)

]=] function p.ll(frame)

   local ret
   local pattern = "{{subst:#ifexist:{{{1}}}/$lc|[[{{{1}}}/$lc{{subst:!}}$lnUC1]] {{subst:!}} }}"
   ret = p.forEachLanguage({ args= { pattern = pattern } })
   ret = frame:preprocess(ret)
   return ret

end

---

--- Different approaches for Template:Lang links ---

---

--[=[

Provide logic for Template:Lang links
Using a cute Hybrid-Method:
   First check the subpages which is quite fast; if there are too many fall back to checking for each language page individually

]=]

-- =p.langLinksNonExpensive({ args= { page='Commons:Picture of the Year/2010' }, getParent=function() end }) -- =p.langLinksNonExpensive({ args= { page='Main Page' }, getParent=function() end }) -- =p.langLinksNonExpensive({ args= { page='Template:No_source_since' }, getParent=function() end }) -- =p.langLinksNonExpensive({ args= { page='MediaWiki:Gadget-HotCat' }, getParent=function() end }) function p.langLinksNonExpensive(frame)

   local args, pargs = frame.args, ( frame:getParent() or {} ).args or {};
   local title = args.page or args[1] or pargs.page or pargs[1] or "";
   local contentLangInstance = mw.language.getContentLanguage();
   local pages2
   if frame.preprocess == nil then
       frame = mw.getCurrentFrame()
   end
   --[==[
   local options = { abort= { time=3.5, on=function()
           pages2 = p.forEachLanguage({ args= { pattern =  } })
       end } }
   local pages = language_subpages( frame, function( basepagename, subpagename, code, langname )
       return mw.ustring.format( '%s | ',
           code, code, code, basepagename, subpagename, contentLangInstance:ucfirst( langname ) )
   end, options );
   return pages2 and frame:preprocess(pages2) or table.concat(pages, );
   ]==]
   return frame:preprocess( p.forEachLanguage({ args= { pattern =  } }) )

end

---

---

Template:Autolang -----------------

---

--[[

 Works like  just allowing an unlimited number of arguments, even named arguments.
 It's doing Magic! No arguments should be passed to 

]]

function p.autolang(frame)

   local args, pargs = cloneArgs( frame )
   if nil == args.useargs then
       if not args.base then args = pargs end
   elseif 'both' == args.useargs then
       for k,v in pairs(args) do pargs[k] = v end
       args = pargs
   elseif 'parent' == args.useargs then
       args = pargs
       if pargs.base and not args.base then
           args.base = pargs.base
       end
   end
   local base = args.base
   local userlang = frame:preprocess( '⧼lang⧽' )
   local tl, tlns = 'Template:', 10
   local tlb, fallback1, currenttemplate
   local fallback, contentlang = mw.text.split( userlang, '-', true )[1], mw.language.getContentLanguage():getCode()

   local createReturn = function(title)
       local ret
       local tlargs = {}
        -- When LUA is invoked, templates are already expanded. This must be respected.
       return frame:expandTemplate{ title = title, args = args }
   end

   if not base then
       return ("'autolang' in Module:Languages was called but the 'base' parameter could not be found." ..
           "The base parameter specifies the template that's subpages will be sought for a suitable translation.")
   end
   tlb = tl .. base .. '/'

   currenttemplate = tlb .. userlang
   local ok, exists = pcall( function()
       return mw.title.new( currenttemplate, tlns ).exists
   end )
   if ok and exists then
       return createReturn(currenttemplate)
   end

   fallback1 = frame:preprocess( 'Template:Fallback' )
   if fallback1 ~= contentlang then
       return createReturn(tlb .. fallback1)
   end

   currenttemplate = tlb .. fallback
   local ok, exists = pcall( function()
       return mw.title.new( currenttemplate, tlns ).exists
   end )
   if ok and exists then
       return createReturn(currenttemplate)
   end

   currenttemplate = tlb .. contentlang
   local ok, exists = pcall( function()
       return mw.title.new( currenttemplate, tlns ).exists
   end )
   if ok and exists then
       return createReturn(currenttemplate)
   end
   return createReturn(tl .. base)

end

--[=[ Usage: 1 -> 1

->

]=] function p.isKnownLanguageTag(frame)

   return mw.language.isKnownLanguageTag( frame.args[1] or frame.args.tag or frame.args.code or  ) and '1' or 

end

function p.file_languages(frame)

   local M_link = require( 'Module:Link' )
   local contentLangInstance = mw.language.getContentLanguage()
   local pattern = frame.args.pattern or '%s (%s)'
   local original = frame.args.original or mw.title.getCurrentTitle().text
   local ext_start, _ = string.find( original, '\.%w+$' )
   local file_ext = string.sub( original, ext_start )
   original = string.sub( original, 0, ext_start-1 )

return frame:preprocess('

• Function(linkInfo)
• Local filename = mw.ustring.format( pattern, original, linkInfo.text ) .. file ext
• Local ok, exists = pcall( function()
• Return mw.title.new( filename, 6 ).exists
• End )
• If ok and exists then
• Return mw.ustring.format( '%s

  %s', filename, contentLangInstance:ucfirst( mw.language.fetchLanguageName( linkInfo.text ) ) )

• Else
• Return nil
• End
• End
• ), '\n'))..'\n

')

end

function p.runTests()

   return p.langLinksNonExpensive({ args= { page='Module:Languages/testcases/test' }, getParent=function() end }) == "Deutsch | English | "

end

return p;