class RSpec::Core::Runner

def self.autorun
  if autorun_disabled?
    RSpec.deprecate("Requiring `rspec/autorun` when running RSpec via the `rspec` command")
    return
  elsif installed_at_exit? || running_in_drb?
    return
  end
  at_exit do
    # Don't bother running any specs and just let the program terminate
    # if we got here due to an unrescued exception (anything other than
    # SystemExit, which is raised when somebody calls Kernel#exit).
    next unless $!.nil? || $!.kind_of?(SystemExit)
    # We got here because either the end of the program was reached or
    # somebody called Kernel#exit.  Run the specs and then override any
    # existing exit status with RSpec's exit status if any specs failed.
    invoke
  end
  @installed_at_exit = true
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.invoke
  disable_autorun!
  status = run(ARGV, $stderr, $stdout).to_i
  exit(status) if status != 0
end

def self.run(args, err=$stderr, out=$stdout)
  trap_interrupt
  options = ConfigurationOptions.new(args)
  if options.options[:drb]
    require 'rspec/core/drb'
    begin
      DRbRunner.new(options).run(err, out)
    rescue DRb::DRbConnError
      err.puts "No DRb server is running. Running in local process instead ..."
      new(options).run(err, out)
    end
  else
    new(options).run(err, out)
  end
end

def self.running_in_drb?
  begin
    if defined?(DRb) && DRb.current_server
      require 'socket'
      require 'uri'
      local_ipv4 = IPSocket.getaddress(Socket.gethostname)
      local_drb = ["127.0.0.1", "localhost", local_ipv4].any? { |addr| addr == URI(DRb.current_server.uri).host }
    end
  rescue DRb::DRbServerNotFound
  ensure
    return local_drb || false
  end
end

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

def initialize(options, configuration=RSpec.configuration, world=RSpec.world)
  @options       = options
  @configuration = configuration
  @world         = world
end

def run(err, out)
  setup(err, out)
  run_specs(@world.ordered_example_groups)
end

def run_specs(example_groups)
  @configuration.reporter.report(@world.example_count(example_groups)) do |reporter|
    begin
      hook_context = SuiteHookContext.new
      @configuration.hooks.run(:before, :suite, hook_context)
      example_groups.map { |g| g.run(reporter) }.all? ? 0 : @configuration.failure_exit_code
    ensure
      @configuration.hooks.run(:after, :suite, hook_context)
    end
  end
end

def setup(err, out)
  @configuration.error_stream = err
  @configuration.output_stream = out if @configuration.output_stream == $stdout
  @options.configure(@configuration)
  @configuration.load_spec_files
  @world.announce_filters
end