class RSpec::Core::Runner

def self.autorun
  return if autorun_disabled? || installed_at_exit? || running_in_drb?
  @installed_at_exit = true
  at_exit { run(ARGV, $stderr, $stdout) ? exit(0) : exit(1) }
end

def self.autorun_disabled?
  @autorun_disabled ||= false
end

def self.disable_autorun!
  @autorun_disabled = true
end

def self.installed_at_exit?
  @installed_at_exit ||= false
end

def self.run(args, err, out)
  trap_interrupt
  options = ConfigurationOptions.new(args)
  options.parse_options
  if options.options[:drb]
    run_over_drb(options, err, out) || run_in_process(options, err, out)
  else
    run_in_process(options, err, out)
  end
end

def self.run_in_process(options, err, out)
  CommandLine.new(options, RSpec::configuration, RSpec::world).run(err, out)
end

def self.run_over_drb(options, err, out)
  DRbCommandLine.new(options).run(err, out)
end

def self.running_in_drb?
  (DRb.current_server rescue false) &&
  !!((DRb.current_server.uri) =~ /druby\:\/\/127.0.0.1\:/)
end

def self.trap_interrupt
  trap('INT') do
    exit!(1) if RSpec.wants_to_quit
    RSpec.wants_to_quit = true
    STDERR.puts "\nExiting... Interrupt again to exit immediately."
  end
end