Module:Languages

function language_subpages( frame, transform ) 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 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, {}; for pg in page.subpages( title ) do           langcode = string.lower( pg ); langname = fetch( langcode ); if langname ~= '' then table.insert( pages, transform( title, pg, langcode, langname ) ); end end return pages; end return {}; end

local p = {};

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

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:

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 Patterns: $lc - language code such as en or de   $lnP - language name in own language $lnUC1 - language name in own language, 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 ]=]

-- =p.forEachLanguage({ args= { pattern = "$lc - $lnTrP\n", inLang = "en" } }) function p.forEachLanguage(frame) local l = require( "Module:Languages/List" ) local ret = {} local lang   = mw.language local langInstance local fetch  = lang.fetchLanguageName local line local pattern = frame.args.pattern  or frame.args[1] or "" local before = frame.args.before    or frame.args[2] or "" local after  = frame.args.after     or frame.args[3] or "" local sep    = frame.args.separator or frame.args[4] or "" local inLang = frame.args.inLang    or frame.args[5] or nil local langName local langNameUCFirst local langNameTranslated local langNameTranslatedUCFirst local langNameUCFirstReq = not not pattern:find( "$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( "$lnTrP", 1, true ) or langNameTranslatedUCFirstReq for k, v in pairs( l.list ) do        line = pattern:gsub( "$lc", v ) if langNameReq then langName = fetch( v ) line = line:gsub( "$lnP", langName ) end if langNameUCFirstReq then langInstance = mw.getLanguage( v ) langNameUCFirst = langInstance:ucfirst( langName ) line = line:gsub( "$lnUC1", langNameUCFirst ) end if langNameTranslatedReq and inLang then langNameTranslated = fetch( v, inLang ) line = line:gsub( "$lnTrP", langNameTranslated ) end if langNameUCFirstReq and inLang then if not langInstance then langInstance = mw.getLanguage( v ) end langNameTranslatedUCFirst = langInstance:ucfirst( langNameTranslated ) line = line:gsub( "$lnTrUC1", langNameTranslatedUCFirst ) end -- Don't know why ret:insert( line ) throws >>attempt to call method 'insert' (a nil value)<< table.insert(ret, line) end return before .. table.concat( ret, sep ) .. after end

return p;