Module:IPAddress: Difference between revisions

From the Croc Wiki, the Croc encyclopedia
Jump to navigationJump to search

Module:IPAddress (view source)

Revision as of 04:56, June 1, 2021

485 bytes removed ,  3 years ago
include changes from sandbox to remove global functions (undesirable and don't appear to be needed) and related to style; then can focus on proposed changes in sandbox
(update from Module:IPAddress/sandbox with new isIpOrRange function per Module talk:IPAddress#isIpOrRange)
(include changes from sandbox to remove global functions (undesirable and don't appear to be needed) and related to style; then can focus on proposed changes in sandbox)
Line 1:
local p = {}▼
--[=[
Functions 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 functions
can be called from templates also.
 
function p._isIpV6( s )▼
Only [[dotted decimal]] notation for IPv4 supported. Does not support
dotted 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 ::
end
 
function p._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+)$" )▼
▲ if type( s ) ~= "string" then return false end
return legal( p1 ) and legal( p2 ) and legal( p3 ) and legal( p4 )▼
▲ local p1, p2, p3, p4 = s:match( "^(%d+)%.(%d+)%.(%d+)%.(%d+)$" )
▲ return legal( p1 ) and legal( p2 ) and legal( p3 ) and legal( p4 )
end
 
function p._isIp( s )
return p._isIpV4( s ) and "4" or p._isIpV6( s ) and "6"
end
 
function p.isIpV4isIpV6(frame) return _isIpV4p._isIpV6( frame.args[ 1 ] ) and "1" or "0" end▼
▲local p = {}
function p.isIpisIpV4(frame) return _isIpp._isIpV4( frame.args[ 1 ] ) and "1" or "0" end▼
 
function p.isIpV6isIp(frame) return _isIpV6p._isIp( frame.args[ 1 ] ) and "1" or "0" end
▲function p.isIpV4(frame) return _isIpV4( frame.args[ 1 ] ) and "1" or "0" end
▲function p.isIp(frame) return _isIp( frame.args[ 1 ] ) or "" end
 
function p.isIpOrRange(frame)
Anonymous user
Retrieved from "https://crocwiki.com/wiki/Special:MobileDiff/30946"
Cookies help us deliver our services. By using our services, you agree to our use of cookies.
More information

Navigation menu