class IpProcessor

Public Class Methods

merge_ips(ips) click to toggle source

merge [“10.32.119.2”,“10.32.119.3”,“10.32.119.4”,“10.32.119.10,”10.32.119.11“] to

“10.32.119.2-10.32.119.4”,“10.32.119.10-10.32.119.11”

# File lib/ip_processor.rb, line 26
def self.merge_ips(ips)
  ips = ips.split(",") if ips.is_a? String

  subnet = ips[0].split(".")[0..2].join(".")
  last_fields = ips.map{|i| i.split(".")[-1].to_i}
  last_fields.sort!
  last_field = last_fields[0]
  res="#{last_field}"
  last_fields.each do |f|
    if(f>last_field +1)
      res << ",#{f}"
    elsif (f == last_field+1)
      res << " #{f}"
    end
    last_field = f
  end
  res = res.split(",")
  res=res.map do |ip_list|
    ips=ip_list.split(" ")
    if ips.size == 1
      subnet+"."+ip_list
    else
      "#{subnet}.#{ips[0]}-#{subnet}.#{ips[-1]}"
    end
  end
end

split_ips(ip_str) click to toggle source

split ips from “10.32.119.2 - 10.32.119.35”

# File lib/ip_processor.rb, line 4
def self.split_ips(ip_str)
  ips = ip_str.split("-")
  if ips.size == 1
    return ips
  elsif ips.size > 2
    raise "illegal format, should be ip1-ip2"
  elsif ips[0].split(".")[0..2] != ips[1].split(".")[0..2]
    raise "only support ips in same subnet, and the subnet mask is assumed to be 255.255.255"
  end

  all_ips=[]
  subnet = ips[0].split(".")[0..2]
  ipstart = ips[0].split(".")[3].to_i
  ipend   = ips[1].split(".")[3].to_i
  ipstart.upto(ipend).each do |i|
    all_ips << (subnet + [i]).join(".")
  end
  return all_ips
end