From: Peter Ertl <pertl@...>
Date: 2006-04-21T01:28:41+09:00
Subject: Re: Converting IP range to array of IP's

had some fun with that :-)

require 'pp'

def ip_range(range, &block)
  start, delta = range.split("-").map do |ipstr|
    ipstr.split(".").map do |number| number.to_i end
  end
  
  (0..3).each do |pos|
    delta[pos] -= start[pos]
  end

  (0..delta[0]).each do |d0|
    (0..delta[1]).each do |d1|
      (0..delta[2]).each do |d2|
        (0..delta[3]).each do |d3|
          yield [start[0] + d0, start[1] + d1, start[2] + d2, start[3] + d3]
        end
      end
    end
  end
end
  
ip_range("192.168.1.1 - 192.169.2.5") do |ip| 
  pp ip
end



> --- Urspr�ngliche Nachricht ---
> Von: Kris <krisleech@interkonect.com>
> An: ruby-talk@ruby-lang.org (ruby-talk ML)
> Betreff: Converting IP range to array of IP's
> Datum: Fri, 21 Apr 2006 01:05:59 +0900
> 
> I'm looking to convert an IP string (ranges, subnet masks or wild-carded 
> IP's) in to an array of IP strings:
> 
> eg. "192.168.1.1 - 192.168.1.5" => ["192.168.1.1", "192.168.1.2", 
> "192.168.1.3", "192.168.1.4", "192.168.1.5"]
> 
> Before I embark on this, is there already a ruby class that does it or 
> some of this?
> 
> I've checked out the NET classes already.
> 
> Many thanks, K.
> 
> -- 
> Posted via http://www.ruby-forum.com/.
>