daqing / cidr

CIDR aggregator for IPv4 addresses

Cidr

CIDR aggregator for IPv4 addresses

Installation

Add this line to your application's Gemfile:

gem 'cidr', :git => "https://github.com/izawa/cidr.git"

And then execute:

$ bundle install

Or install it yourself as:

$ gem install cidr

Usage

require 'cidr'

aggregator = Cidr::Aggregator.new

aggregator.add('192.168.0.1')
aggregator.add('192.168.0.2')
aggregator.add('192.168.0.3')
aggregator.add('192.168.0.4')
aggregator.add('192.168.0.5')
aggregator.add('192.168.0.6')
aggregator.add('192.168.0.7')

aggregator.list
  #=> [{:addr=>"192.168.0.1", :prefix=>32},
       {:addr=>"192.168.0.2", :prefix=>31},
       {:addr=>"192.168.0.4", :prefix=>30}]

aggregator.add will be able to recognize the input string in the following format.

• 192.168.0.1 (without prefix)
• 192.168.0.0/24 (with prefix)

'xxx.xxx.xxx.xxx' and 'xxx.xxx.xxx.xxx/32' are assumed to be identical.

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Added some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request