class RSpec::Core::Runner

def self.autorun
  return if autorun_disabled? || installed_at_exit? || running_in_drb?
  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.
    status = run(ARGV, $stderr, $stdout).to_i
    exit status if status != 0
  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.run(args, err=$stderr, out=$stdout)
  warn_about_calling_reset if RSpec.resets_required > 0
  RSpec.resets_required += 1
  trap_interrupt
  options = ConfigurationOptions.new(args)
  options.parse_options
  major, minor, point = RUBY_VERSION.split('.').map { |v| v.to_i }
  if major == 1 && ( (minor == 9 && point < 2) || (minor == 8 && point < 7) )
    RSpec.deprecate "RSpec support for Ruby #{RUBY_VERSION}",
                    :replacement => "1.8.7 or >= 1.9.2",
                    :call_site   => nil
  end
  if options.options[:drb]
    require 'rspec/core/drb_command_line'
    begin
      DRbCommandLine.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
ensure
  RSpec.internal_reset
end

def self.running_in_drb?
  defined?(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

def self.warn_about_calling_reset
  RSpec.configuration.deprecation_stream.puts(<<-EOD)
g `RSpec::Core::Runner.run` will no longer implicitly invoke
.reset` as of RSpec 3.0.0. If you need RSpec to be reset between your
to `RSpec::Core::Runner.run` please invoke `RSpec.reset` manually in the
riate place.
  EOD
end

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

def run(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
  @configuration.reporter.report(@world.example_count, @configuration.send(:_randomize?) ? @configuration.seed : nil) do |reporter|
    begin
      @configuration.run_hook(:before, :suite)
      @world.example_groups.ordered.map {|g| g.run(reporter)}.all? ? 0 : @configuration.failure_exit_code
    ensure
      @configuration.run_hook(:after, :suite)
    end
  end
end