makepem

#!/usr/bin/env ruby

class MakePEM
  def initialize(argv)
    @file = argv[0]
    abort help unless valid_args

    parts = @file.split('.')
    @name = parts.first

    create_pem
  end

  def valid_args
    @file and @file.match(/p12$/)
  end

  def help
  <<-doc
  Usage:
  makepem file.p12
  doc
  end

  def create_pem
    `openssl pkcs12 -in #{@file} -out #{@name}.pem -nodes -clcerts`

    if $? == 0
      `rm #{@file}`
      puts 'Done'
    end
  end
end

MakePEM.new(ARGV)