Simple base box updater for Vagrant base-boxes. Go from a pre 1.1 Virtualbox base-box to one ready for Vagrant 1.1+

vagrant-box-updater.rb

#!/usr/bin/env ruby
require 'etc'
require 'FileUtils'

box_dir = "#{Etc.getpwuid.dir}/.vagrant.d/boxes"

printf "Attempting to upgrade your baseboxes in #{box_dir}\n"

Dir.entries(box_dir).each do |box|
  next if ['.','..'].include? box
  print "Checking \"#{box}\"\n"

  # Assume that a 'Vagrantfile' in the root of the base-box dir means it's
  # from the pre 1.1+ days. If not found, consider this box converted.
  if File.exists? "#{box_dir}/#{box}/Vagrantfile"
    print "Moving VM files for \"#{box}\" under 'virtualbox' directory...\n"
    Dir.mkdir "#{box_dir}/#{box}/virtualbox" unless Dir.exists? "#{box_dir}/#{box}/virtualbox"

    Dir.entries("#{box_dir}/#{box}").each do |file|
      # Ignore currently valid provider directories. These are the mainstream providers at the very least.
      next if ['.','..','virtualbox','vmwarevm','vmware_fusion','aws'].include? file

      print "\t- Moving \"#{box}/#{file}\" to \"#{box}/virtualbox/#{file}\"\n"
      FileUtils.mv "#{box_dir}/#{box}/#{file}", "#{box_dir}/#{box}/virtualbox/#{file}"
    end
  end

  # Upgrade the Vagrantfile for virtualbox if still using the old syntax (technically treated as version 1 syntax)
  if File.exists? "#{box_dir}/#{box}/virtualbox/Vagrantfile"
    vagrantfile = File.read("#{box_dir}/#{box}/virtualbox/Vagrantfile")

    # Fancy gsub does our "upgrayedd" - http://goo.gl/3WXu4
    if vagrantfile.gsub!(/Vagrant::Config\.run.*$/,'Vagrant.configure("2") do |config|')
      print "\t- Upgrading 'virtualbox/Vagrantfile' for \"#{box}\" to configuration verion 2...\n"
      File.open("#{box_dir}/#{box}/virtualbox/Vagrantfile",'w').write(vagrantfile)
    end
  end

  # Add a basic metadata.conf if missing. Needed by the new 'virtualbox' provider.
  unless File.exists? "#{box_dir}/#{box}/virtualbox/metadata.json"
    print "\t- Adding default 'virtualbox/metadata.json' for \"#{box}\"...\n"
    File.open("#{box_dir}/#{box}/virtualbox/metadata.json",'w').write('{"provider":"virtualbox"}')
  end
end