local URLutil = { suite  = "URLutil",                   serial = "2022-04-05",                   item   = 10859193 } --[=[ Utilities for URL etc. on www. * decode() * encode() * getAuthority() * getFragment() * getHost() * getLocation() * getNormalized() * getPath() * getPort() * getQuery() * getQueryTable() * getRelativePath() * getScheme() * getSortkey() * getTLD() * getTop2domain() * getTop3domain() * isAuthority() * isDomain() * isDomainExample() * isDomainInt() * isHost() * isHostPathResource() * isIP() * isIPlocal() * isIPv4() * isIPv6() * isMailAddress() * isMailLink() * isProtocolDialog() * isProtocolWiki() * isResourceURL() * isSuspiciousURL() * isUnescapedURL() * isWebURL() * wikiEscapeURL() * failsafe() Only [[dotted decimal]] notation for IPv4 expected. Does not support dotted hexadecimal, dotted octal, or single-number formats. IPv6 URL (bracketed) not yet implemented; might need Wikintax escaping anyway. ]=] local Failsafe  = URLutil    local decodeComponentProtect = { F = "\"#%<>[\]^`{|}",                                  P = "\"#%<>[\]^`{|}/?",                                  Q = "\"#%<>[\]^`{|}&=+;,",                                  X = "\"#%<>[\]^`{|}&=+;,/?" }    local decodeComponentEscape = function ( averse, adapt )     return  adapt == 20  or  adapt == 127  or             decodeComponentProtect[ averse ]:find( string.char( adapt ),                                                    1,                                                    true ) end -- decodeComponentEscape()    local decodeComponentML = function ( ask )     local i = 1     local j, n, s     while ( i ) do         i = ask:find( "&#[xX]%x%x+;", i )         if i then             j = ask:find( ";",  i + 3,  true )             s = ask:sub( i + 2,  j - 1 ):upper()             n = s:byte( 1, 1 )             if n == 88 then                 n = tonumber( s:sub( 2 ),  16 )             elseif s:match( "^%d+$" ) then                 n = tonumber( s )             else                 n = false             end             if n then                 if n >= 128 then                     s = string.format( "&#%d;", n )                 elseif decodeComponentEscape( "X", n ) then                     s = string.format( "%%%02X", n )                 else                     s = string.format( "%c", n )                 end                 j = j + 1                 if i == 1 then                     ask = s .. ask:sub( j )                 else                     ask = string.format( "%s%s%s",                                          ask:sub( 1,  i - 1 ),                                          s,                                          ask:sub( j ) )                 end             end             i = i + 1         end     end -- while i     return ask end -- decodeComponentML()    local decodeComponentPercent = function ( ask, averse )     local i = 1     local j, k, m, n     while ( i ) do         i = ask:find( "%%[2-7]%x", i )         if i then             j = i + 1             k = j + 1             n = ask:byte( k, k )             k = k + 1             m = ( n > 96 )             if m then                 n = n - 32                 m = n             end             if n > 57 then                 n = n - 55             else                 n = n - 48             end             n = ( ask:byte( j, j ) - 48 )  *  16   +   n             if n == 39  and                ask:sub( i + 3,  i + 5 ) == "%27" then                j = i + 6                while ( ask:sub( j,  j + 2 )  ==  "%27" ) do                   j = j + 3                end -- while "%27"             elseif decodeComponentEscape( averse, n ) then                 if m then                     ask = string.format( "%s%c%s",                                          ask:sub( 1, j ),                                          m,                                          ask:sub( k ) )                 end             elseif i == 1 then                 ask = string.format( "%c%s",  n,  ask:sub( k ) )             else                 ask = string.format( "%s%c%s",                                      ask:sub( 1,  i - 1 ),                                      n,                                      ask:sub( k ) )             end             i = j         end     end -- while i     return ask end -- decodeComponentPercent()    local getTopDomain = function ( url, mode )     local r = URLutil.getHost( url )     if r then         local pattern = "[%w%%%-]+%.%a[%w%-]*%a)$"         if mode == 3 then             pattern = "[%w%%%-]+%." .. pattern         end         r = mw.ustring.match( "." .. r,  "%.(" .. pattern )         if not r then             r = false         end     else         r = false     end     return r end -- getTopDomain()    local getHash = function ( url )     local r = url:find( "#", 1, true )     if r then         local i = url:find( "&#", 1, true )         if i then             local s             while ( i ) do                 s = url:sub( i + 2 )                 if s:match( "^%d+;" ) or s:match( "^x%x+;" ) then                     r = url:find( "#",  i + 4,  true )                     if r then                         i = url:find( "&#",  i + 4,  true )                     else                         i = false                     end                 else                     r = i + 1                     i = false                 end             end -- while i         end     end     return r end -- getHash()    URLutil.decode = function ( url, enctype )     local r, s     if type( enctype ) == "string" then         s = mw.text.trim( enctype )         if s == "" then             s = false         else             s = s:upper()         end     end     r = mw.text.encode( mw.uri.decode( url, s ) )     if r:find( "[%[|%]]" ) then         local k         r, k = r:gsub( "%[", "&#91;" )                 :gsub( "|", "&#124;" )                 :gsub( "%]", "&#93;" )     end     return r end -- URLutil.decode()    URLutil.encode = function ( url, enctype )     local k, r, s     if type( enctype ) == "string" then         s = mw.text.trim( enctype )         if s == "" then             s = false         else             s = s:upper()         end     end     r = mw.uri.encode( url, s )     k = r:byte( 1, 1 )     if -- k == 35  or      -- #           k == 42  or      -- *           k == 58  or      -- :           k == 59 then     -- ;         r = string.format( "%%%X%s", k, r:sub( 2 ) )     end     if r:find( "[%[|%]]" ) then         r, k = r:gsub( "%[", "%5B" )                 :gsub( "|",  "%7C" )                 :gsub( "%]", "%5D" )     end     return r end -- URLutil.encode()    URLutil.getAuthority = function ( url )     local r     if type( url ) == "string" then         local colon, host, port         local pattern = "^%s*%w*:?//([%w%.%%_-]+)(:?)([%d]*)/"         local s = mw.text.decode( url )         local i = s:find( "#", 6, true )         if i then             s = s:sub( 1,  i - 1 )  ..  "/"         else             s = s .. "/"         end         host, colon, port = mw.ustring.match( s, pattern )         if URLutil.isHost( host ) then             host = mw.ustring.lower( host )             if colon == ":" then                 if port:find( "^[1-9]" ) then                     r = ( host .. ":" .. port )                 end             elseif #port == 0 then                 r = host             end         end     else         r = false     end     return r end -- URLutil.getAuthority()    URLutil.getFragment = function ( url, decode )     local r     if type( url ) == "string" then         local i = getHash( url )         if i then             r = mw.text.trim( url:sub( i ) ):sub( 2 )             if type( decode ) == "string" then                 local encoding = mw.text.trim( decode )                 local launch                 if encoding == "%" then                     launch = true                 elseif encoding == "WIKI" then                     r = r:gsub( "%.(%x%x)", "%%%1" )                          :gsub( "_", " " )                     launch = true                 end                 if launch then                     r = mw.uri.decode( r, "PATH" )                 end             end         else             r = false         end     else         r = nil     end     return r end -- URLutil.getFragment()    URLutil.getHost = function ( url )     local r = URLutil.getAuthority( url )     if r then         r = mw.ustring.match( r, "^([%w%.%%_%-]+):?[%d]*$" )     end     return r end -- URLutil.getHost()    URLutil.getLocation = function ( url )     local r     if type( url ) == "string" then         r = mw.text.trim( url )         if r == "" then             r = false         else             local i             i = getHash( r )             if i then                 if i == 1 then                     r = false                 else                     r = r:sub( 1,  i - 1 )                 end             end         end     else         r = nil     end     return r end -- URLutil.getLocation()    URLutil.getNormalized = function ( url )     local r     if type( url ) == "string" then         r = mw.text.trim( url )         if r == "" then             r = false         else             r = decodeComponentML( r )         end     else         r = false     end     if r then         local k = r:find( "//", 1, true )         if k then             local j = r:find( "/",  k + 2,  true )             local sF, sP, sQ             if r:find( "%%[2-7]%x" ) then                 local i = getHash( r )                 if i then                     sF = r:sub( i + 1 )                     r  = r:sub( 1,  i - 1 )                     if sF == "" then                         sF = false                     else                         sF = decodeComponentPercent( sF, "F" )                     end                 end                 i = r:find( "?", 1, true )                 if i then                     sQ = r:sub( i )                     r  = r:sub( 1,  i - 1 )                     sQ = decodeComponentPercent( sQ, "Q" )                 end                 if j then                     if #r > j then                         sP = r:sub( j + 1 )                         sP = decodeComponentPercent( sP, "P" )                     end                     r = r:sub( 1,  j - 1 )                 end             elseif j then                 local n = #r                 if r:byte( n, n ) == 35 then    -- '#'                     n = n - 1                     r = r:sub( 1, n )                 end                 if n > j then                     sP = r:sub( j + 1 )                 end                 r = r:sub( 1,  j - 1 )             end             r = mw.ustring.lower( r ) .. "/"             if sP then                 r = r .. sP             end             if sQ then                 r = r .. sQ             end             if sF then                 r = string.format( "%s#%s", r, sF )             end         end         r = r:gsub( " ",  "%%20" )              :gsub( "%[", "%%5B" )              :gsub( "|",  "%%7C" )              :gsub( "%]", "%%5D" )              :gsub( "%<", "%%3C" )              :gsub( "%>", "%%3E" )     end     return r end -- URLutil.getNormalized()    URLutil.getPath = function ( url )     local r = URLutil.getRelativePath( url )     if r then         local s = r:match( "^([^%?]*)%?" )         if s then             r = s         end         s = r:match( "^([^#]*)#" )         if s then             r = s         end     end     return r end -- URLutil.getPath()    URLutil.getPort = function ( url )     local r = URLutil.getAuthority( url )     if r then         r = r:match( ":([1-9][0-9]*)$" )         if r then             r = tonumber( r )         else             r = false         end     end     return r end -- URLutil.getPort()    URLutil.getQuery = function ( url, key, separator )     local r = URLutil.getLocation( url )     if r then         r = r:match( "^[^%?]*%?(.+)$" )         if r then             if type( key ) == "string" then                 local single = mw.text.trim( key )                 local sep = "&"                 local s, scan                 if type( separator ) == "string" then                     s = mw.text.trim( separator )                     if s:match( "^[&;,/]$" ) then                         sep = s                     end                 end                 s = string.format( "%s%s%s", sep, r, sep )                 scan = string.format( "%s%s=([^%s]*)%s",                                       sep, key, sep, sep )                 r = s:match( scan )             end         end         if not r then             r = false         end     end     return r end -- URLutil.getQuery()    URLutil.getQueryTable = function ( url, separator )     local r = URLutil.getQuery( url )     if r then         local sep = "&"         local n, pairs, s, set         if type( separator ) == "string" then             s = mw.text.trim( separator )             if s:match( "^[&;,/]$" ) then                 sep = s             end         end         pairs = mw.text.split( r, sep, true )         n = #pairs         r = { }         for i = 1, n do             s = pairs[ i ]             if s:find( "=", 2, true ) then                 s, set = s:match( "^([^=]+)=(.*)$" )                 if s then                     r[ s ] = set                 end             else                 r[ s ] = false             end         end -- for i     end     return r end -- URLutil.getQueryTable()    URLutil.getRelativePath = function ( url )     local r     if type( url ) == "string" then         local s = url:match( "^%s*[a-zA-Z]*://(.*)$" )         if s then             s = s:match( "[^/]+(/.*)$" )         else             local x             x, s = url:match( "^%s*(/?)(/.*)$" )             if x == "/" then                 s = s:match( "/[^/]+(/.*)$" )             end         end         if s then             r = mw.text.trim( s )         elseif URLutil.isResourceURL( url ) then             r = "/"         else             r = false         end     else         r = nil     end     return r end -- URLutil.getRelativePath()    URLutil.getScheme = function ( url )     local r     if type( url ) == "string" then         local pattern = "^%s*([a-zA-Z]*)(:?)(//)"         local prot, colon, slashes = url:match( pattern )         r = false         if slashes == "//" then             if colon == ":" then                 if #prot > 2 then                     r = prot:lower() .. "://"                 end             elseif #prot == 0 then                 r = "//"             end         end     else         r = nil     end     return r end -- URLutil.getScheme()    URLutil.getSortkey = function ( url )     local r = url     if type( url ) == "string" then         local i = url:find( "//" )         if i then             local scheme             if i == 0 then                 scheme = ""             else                 scheme = url:match( "^%s*([a-zA-Z]*)://" )             end             if scheme then                 local s = url:sub( i + 2 )                 local comps, site, m, suffix                 scheme = scheme:lower()                 i      = s:find( "/" )                 if i  and  i > 1 then                     suffix = s:sub( i + 1 )            -- mw.uri.encode()                     s      = s:sub( 1,  i - 1 )                     suffix = suffix:gsub( "#", " " )                 else                     suffix = ""                 end                 site, m = s:match( "^(.+)(:%d+)$" )                 if not m then                     site = s                     m    = 0                 end                 comps = mw.text.split( site:lower(), ".", true )                 r = "///"                 for i = #comps, 2, -1 do                     r =  string.format( "%s%s.", r, comps[ i ] )                 end -- for --i                 r = string.format( "%s%s %d %s: %s",                                    r, comps[ 1 ], m, scheme, suffix )             end         end     end     return r end -- URLutil.getSortkey()    URLutil.getTLD = function ( url )     local r = URLutil.getHost( url )     if r then         r = mw.ustring.match( r, "%w+%.(%a[%w%-]*%a)$" )         if not r then             r = false         end     end     return r end -- URLutil.getTLD()    URLutil.getTop2domain = function ( url )     return getTopDomain( url, 2 ) end -- URLutil.getTop2domain()    URLutil.getTop3domain = function ( url )     return getTopDomain( url, 3 ) end -- URLutil.getTop3domain()    URLutil.isAuthority = function ( s )     local r     if type( s ) == "string" then         local pattern = "^%s*([%w%.%%_-]+)(:?)(%d*)%s*$"         local host, colon, port = mw.ustring.match( s, pattern )         if colon == ":" then             port = port:match( "^[1-9][0-9]*$" )             if type( port ) ~= "string" then                 r = false             end         elseif port ~= "" then             r = false         end         r = URLutil.isHost( host )     else         r = nil     end     return r end -- URLutil.isAuthority()    URLutil.isDomain = function ( s )     local r     if type( s ) == "string" then         local scan = "^%s*([%w%.%%_-]*%w)%.(%a[%w-]*%a)%s*$"         local scope         s, scope = mw.ustring.match( s, scan )         if type( s ) == "string" then             if mw.ustring.find( s, "^%w" ) then                 if mw.ustring.find( s, "..", 1, true ) then                     r = false                 else                     r = true                 end             end         end     else         r = nil     end     return r end -- URLutil.isDomain()    URLutil.isDomainExample = function ( url )     -- RFC 2606: example.com example.net example.org example.edu     local r = getTopDomain( url, 2 )     if r then         local s = r:lower():match( "^example%.([a-z][a-z][a-z])$" )         if s then             r = ( s == "com" or                   s == "edu" or                   s == "net" or                   s == "org" )         else             r = false         end     end     return r end -- URLutil.isDomainExample()    URLutil.isDomainInt = function ( url )     -- Internationalized Domain Name (Punycode)     local r = URLutil.getHost( url )     if r then         if r:match( "^[!-~]+$" ) then             local s = "." .. r             if s:find( ".xn--", 1, true ) then                 r = true             else                 r = false             end         else             r = true         end     end     return r end -- URLutil.isDomainInt()    URLutil.isHost = function ( s )     return URLutil.isDomain( s ) or URLutil.isIP( s ) end -- URLutil.isHost()    URLutil.isHostPathResource = function ( s )     local r = URLutil.isResourceURL( s )     if not r  and s then         r = URLutil.isResourceURL( "//" .. mw.text.trim( s ) )     end     return r end -- URLutil.isHostPathResource()    URLutil.isIP = function ( s )     return URLutil.isIPv4( s ) and 4 or URLutil.isIPv6( s ) and 6 end -- URLutil.isIP()    URLutil.isIPlocal = function ( s )     -- IPv4 according to RFC 1918, RFC 1122; even any 0.0.0.0 (RFC 5735)     local r = false     local num = s:match( "^ *([01][0-9]*)%." )     if num then         num = tonumber( num )         if num == 0 then             r = s:match( "^ *0+%.[0-9]+%.[0-9]+%.[0-9]+ *$" )         elseif num == 10  or  num == 127 then             -- loopback; private/local host: 127.0.0.1             r = URLutil.isIPv4( s )         elseif num == 169 then             -- 169.254.*.*         elseif num == 172 then             -- 172.(16...31).*.*             num = s:match( "^ *0*172%.([0-9]+)%." )             if num then                 num = tonumber( num )                 if num >= 16  and  num <= 31 then                     r = URLutil.isIPv4( s )                 end             end         elseif beg == 192 then             -- 192.168.*.*             num = s:match( "^ *0*192%.([0-9]+)%." )             if num then                 num = tonumber( num )                 if num == 168 then                     r = URLutil.isIPv4( s )                 end             end         end     end     if r then         r = true     end     return r end -- URLutil.isIPlocal()    URLutil.isIPv4 = function ( s )     local function legal( n )               return ( tonumber( n ) < 256 )           end     local r = false     if type( s ) == "string" then         local p1, p2, p3, p4 = s:match( "^%s*([1-9][0-9]?[0-9]?)%.([12]?[0-9]?[0-9])%.([12]?[0-9]?[0-9])%.([12]?[0-9]?[0-9])%s*$" )         if p1 and p2 and p3 and p4 then             r = legal( p1 ) and legal( p2 ) and legal( p3 ) and legal( p4 )         end     end     return r end -- URLutil.isIPv4()    URLutil.isIPv6 = function ( s )     local dcolon, groups     if type( s ) ~= "string"         or s:len() == 0         or s:find( "[^:%x]" ) -- only colon and hex digits are legal chars         or s:find( "^:[^:]" ) -- can begin or end with :: but not with single :         or s:find( "[^:]:$" )         or s:find( ":::" )     then         return false     end     s = mw.text.trim( s )     s, dcolon = s:gsub( "::", ":" )     if dcolon > 1 then         return false     end -- at most one ::     s = s:gsub( "^:?", ":" ) -- prepend : if needed, upper     s, groups = s:gsub( ":%x%x?%x?%x?", "" ) -- remove valid groups, and count them     return ( ( dcolon == 1 and groups < 8 ) or              ( dcolon == 0 and groups == 8 ) )         and ( s:len() == 0 or ( dcolon == 1 and s == ":" ) ) -- might be one dangling : if original ended with :: end -- URLutil.isIPv6()    URLutil.isMailAddress = function ( s )     if type( s ) == "string" then         s = mw.ustring.match( s, "^%s*[%w%.%%_-]+@([%w%.%%-]+)%s*$" )         return URLutil.isDomain( s )     end     return false end -- URLutil.isMailAddress()    URLutil.isMailLink = function ( s )     if type( s ) == "string" then         local addr         s, addr = mw.ustring.match( s, "^%s*([Mm][Aa][Ii][Ll][Tt][Oo]):(%S[%w%.%%_-]*@[%w%.%%-]+)%s*$" )         if type( s ) == "string" then             if s:lower() == "mailto" then                 return URLutil.isMailAddress( addr )             end         end     end     return false end -- URLutil.isMailLink()    local function isProtocolAccepted( prot, supplied )     if type( prot ) == "string" then         local scheme, colon, slashes = mw.ustring.match( prot, "^%s*([a-zA-Z]*)(:?)(/?/?)%s*$" )         if slashes ~= "/" then             if scheme == "" then                 if colon ~= ":" and slashes == "//" then                     return true                 end              elseif colon == ":" or slashes == "" then                 local s = supplied:match( " " .. scheme:lower() .. " " )                 if type( s ) == "string" then                     return true                 end             end         end     end     return false end -- isProtocolAccepted()    URLutil.isProtocolDialog = function ( prot )     return isProtocolAccepted( prot, " mailto irc ircs ssh telnet " ) end -- URLutil.isProtocolDialog()    URLutil.isProtocolWiki = function ( prot )     return isProtocolAccepted( prot,                                " ftp ftps git http https nntp sftp svn worldwind " ) end -- URLutil.isProtocolWiki()    URLutil.isResourceURL = function ( url )     local scheme = URLutil.getScheme( url )     if scheme then         local s = " // http:// https:// ftp:// sftp:// "         s = s:find( string.format( " %s ", scheme ) )         if s then             if URLutil.getAuthority( url ) then                 if not url:match( "%S%s+%S" ) then                     local s1, s2 = url:match( "^([^#]+)(#.*)$" )                     if s2 then                         if url:match( "^%s*[a-zA-Z]*:?//(.+)/" ) then                             return true                         end                     else                         return true                     end                 end             end         end     end     return false end -- URLutil.isResourceURL()    URLutil.isSuspiciousURL = function ( url )     if URLutil.isResourceURL( url ) then         local s = URLutil.getAuthority( url )         local pat = "[%[|%]" ..                     mw.ustring.char( 34,                                      8201, 45, 8207,                                      8234, 45, 8239,                                      8288 )                     .. "]"         if s:find( "@" )            or url:find( "''" )            or url:find( pat )            or url:find( "[%.,]$" ) then             return true         end         -- TODO  zero width character ??         return false     end     return true end -- URLutil.isSuspiciousURL()    URLutil.isUnescapedURL = function ( url, trailing )     if type( trailing ) ~= "string" then         if URLutil.isWebURL( url ) then             if url:match( "[%[|%]]" ) then                 return true             end         end     end     return false end -- URLutil.isUnescapedURL()    URLutil.isWebURL = function ( url )     if URLutil.getScheme( url ) and URLutil.getAuthority( url ) then         if not url:find( "%S%s+%S" )  and            not url:find( "''", 1, true ) then             return true         end     end     return false end -- URLutil.isWebURL()    URLutil.wikiEscapeURL = function ( url )     if url:find( "[%[|%]]" ) then         local n         url, n = url:gsub( "%[", "&#91;" )                     :gsub( "|", "&#124;" )                     :gsub( "%]", "&#93;" )     end     return url end -- URLutil.wikiEscapeURL()    Failsafe.failsafe = function ( atleast )     -- Retrieve versioning and check for compliance     -- Precondition:     --     atleast  -- string, with required version     --                         or wikidata|item|~|@ or false     -- Postcondition:     --     Returns  string  -- with queried version/item, also if problem     --              false   -- if appropriate     -- 2020-08-17     local since = atleast     local last    = ( since == "~" )     local linked  = ( since == "@" )     local link    = ( since == "item" )     local r     if last  or  link  or  linked  or  since == "wikidata" then         local item = Failsafe.item         since = false         if type( item ) == "number"  and  item > 0 then             local suited = string.format( "Q%d", item )             if link then                 r = suited             else                 local entity = mw.wikibase.getEntity( suited )                 if type( entity ) == "table" then                     local seek = Failsafe.serialProperty or "P348"                     local vsn  = entity:formatPropertyValues( seek )                     if type( vsn ) == "table"  and                        type( vsn.value ) == "string"  and                        vsn.value ~= "" then                         if last  and  vsn.value == Failsafe.serial then                             r = false                         elseif linked then                             if mw.title.getCurrentTitle().prefixedText                                ==  mw.wikibase.getSitelink( suited ) then                                 r = false                             else                                 r = suited                             end                         else                             r = vsn.value                         end                     end                 end             end         end     end     if type( r ) == "nil" then         if not since  or  since <= Failsafe.serial then             r = Failsafe.serial         else             r = false         end     end     return r end -- Failsafe.failsafe()    local function Template( frame, action, amount )     -- Run actual code from template transclusion     -- Precondition:     --     frame   -- object     --     action  -- string, with function name     --     amount  -- number, of args if > 1     -- Postcondition:     --     Return string or not     local n = amount or 1     local v = { }     local r, s     for i = 1, n do         s = frame.args[ i ]         if s then              s = mw.text.trim( s )              if s ~= "" then                  v[ i ] = s              end          end     end -- for i     if v[ 1 ] then          r = URLutil[ action ](  v[ 1 ], v[ 2 ], v[ 3 ] )     end     return r end -- Template()    local p = {}  function p.decode( frame )     return Template( frame, "decode", 2 ) or "" end function p.encode( frame )     return Template( frame, "encode", 2 ) or "" end function p.getAuthority( frame )     return Template( frame, "getAuthority" ) or "" end function p.getFragment( frame )     local r = Template( frame, "getFragment", 2 )     if r then         r = "#" .. r     else         r = ""     end     return r end function p.getHost( frame )     return Template( frame, "getHost" ) or "" end function p.getLocation( frame )     return Template( frame, "getLocation" ) or "" end function p.getNormalized( frame )     return Template( frame, "getNormalized" ) or "" end function p.getPath( frame )     return Template( frame, "getPath" ) or "" end function p.getPort( frame )     return Template( frame, "getPort" ) or "" end function p.getQuery( frame )     local r = Template( frame, "getQuery", 3 )     if r then         local key = frame.args[ 2 ]         if key then             key = mw.text.trim( key )             if key == "" then                 key = nil             end         end         if not key then             r = "?" .. r         end     else         r = ""     end     return r end function p.getRelativePath( frame )     return Template( frame, "getRelativePath" ) or "" end function p.getScheme( frame )     return Template( frame, "getScheme" ) or "" end function p.getSortkey( frame )     return Template( frame, "getSortkey" ) or "" end function p.getTLD( frame )     return Template( frame, "getTLD" ) or "" end function p.getTop2domain( frame )     return Template( frame, "getTop2domain" ) or "" end function p.getTop3domain( frame )     return Template( frame, "getTop3domain" ) or "" end function p.isAuthority( frame )     return Template( frame, "isAuthority" ) and "1" or "" end function p.isDomain( frame )     return Template( frame, "isDomain" ) and "1" or "" end function p.isDomainExample( frame )     return Template( frame, "isDomainExample" ) and "1" or "" end function p.isDomainInt( frame )     return Template( frame, "isDomainInt" ) and "1" or "" end function p.isHost( frame )     return Template( frame, "isHost" ) and "1" or "" end function p.isHostPathResource( frame )     return Template( frame, "isHostPathResource" ) and "1" or "" end function p.isIP( frame )     return Template( frame, "isIP" ) or "" end function p.isIPlocal( frame )     return Template( frame, "isIPlocal" ) and "1" or "" end function p.isIPv4( frame )     return Template( frame, "isIPv4" ) and "1" or "" end function p.isIPv6( frame )     return Template( frame, "isIPv6" ) and "1" or "" end function p.isMailAddress( frame )     return Template( frame, "isMailAddress" ) and "1" or "" end function p.isMailLink( frame )     return Template( frame, "isMailLink" ) and "1" or "" end function p.isProtocolDialog( frame )     return Template( frame, "isProtocolDialog" ) and "1" or "" end function p.isProtocolWiki( frame )     return Template( frame, "isProtocolWiki" ) and "1" or "" end function p.isResourceURL( frame )     return Template( frame, "isResourceURL" ) and "1" or "" end function p.isSuspiciousURL( frame )     return Template( frame, "isSuspiciousURL" ) and "1" or "" end function p.isUnescapedURL( frame )     return Template( frame, "isUnescapedURL", 2 ) and "1" or "" end function p.isWebURL( frame )     return Template( frame, "isWebURL" ) and "1" or "" end function p.wikiEscapeURL( frame )     return Template( frame, "wikiEscapeURL" ) end p.failsafe = function ( frame )     local s = type( frame )     local since     if s == "table" then         since = frame.args[ 1 ]     elseif s == "string" then         since = frame     end     if since then         since = mw.text.trim( since )         if since == "" then             since = false         end     end     return Failsafe.failsafe( since ) or "" end function p.URLutil()     return URLutil end  return p