#!/usr/bin/env ruby

require 'pp'

class SSHKey
  def initialize(block)
    parse(block)
  end

  private

  def parse(block)
    pairs = Hash[*block.split("\n").map { |p| p.strip.split(' ') }.flatten]
    @Host = pairs.delete('Host')

    pairs.each { |key, value| instance_variable_set("@#{key}", value) }
  end
end

def retrieve_ssh_keys(config_file)
  config = File.new(config_file, 'r')

  current = ''
  keys = Array.new
  config.each_line do |line|
    next if line.include?('#')
    if line.start_with?('Host')
      keys << SSHKey.new(current)
      current = ''
    end
    current += line
  end

  return keys
end


keys = retrieve_ssh_keys('/home/atomaka/.ssh/config')
pp keys