bin/util/format_geolite2_ipasn_csv
#!/usr/bin/env ruby
# frozen_string_literal: true
require 'csv'
require 'ipaddr'
ARGV.each do |file|
CSV.open(file, 'r', headers: true).each do |row|
network = IPAddr.new(row['network']).to_range
puts CSV.generate_line([
network.begin,
network.end,
row['autonomous_system_number'],
row['autonomous_system_organization']
])
end
end