Módulo:IPAddress
--[=[FROM: en:Module:IPAddressFunctions are not "local", so other modules can require this module and call them directly.We return an object with 3 small stub functions to call the real ones so that the functionscan be called from templates also.Only [[dotted decimal]] notation for IPv4 supported. Does not supportdotted hexadecimal, dotted octal, or single-number formats (see [[IPv4#Address_representations]]).Unit tests at Module:IPAddress/tests]=]function _isIpV6( 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( "[^:]:$" ) or s:find( ":::" ) then return false end s, dcolon = s:gsub( "::", ":" ) if dcolon > 1 then return false end -- at most one :: s = s:gsub( "^:?", ":" ) -- prepend : if needed, upper s, groups = s:gsub( ":%x%x?%x?%x?", "" ) -- remove valid groups, and count them return ( ( dcolon == 1 and groups < 8 ) or ( dcolon == 0 and groups == 8 ) ) and ( s:len() == 0 or ( dcolon == 1 and s == ":" ) ) -- might be one dangling : if original ended with ::endfunction _isIpV4( s ) local function legal( n ) return ( tonumber( n ) or 256 ) < 256 and not n:match("^0%d") end-- in lua 0 is true! if type( s ) ~= "string" then return false end local p1, p2, p3, p4 = s:match( "^(%d+)%.(%d+)%.(%d+)%.(%d+)$" ) return legal( p1 ) and legal( p2 ) and legal( p3 ) and legal( p4 )endfunction _isIp( s ) return _isIpV4( s ) and "4" or _isIpV6( s ) and "6"endlocal p = {}function p.isIpV6(frame) return _isIpV6( frame.args[ 1 ] ) and "1" or "0" endfunction p.isIpV4(frame) return _isIpV4( frame.args[ 1 ] ) and "1" or "0" endfunction p.isIp(frame) return _isIp( frame.args[ 1 ] ) or "" endreturn p
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