class Rspec::Core::Runner

def self.autorun
  return if installed_at_exit?
  @installed_at_exit = true
  at_exit { new.run(ARGV) ? exit(0) : exit(1) } 
end

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

def configuration
  Rspec::Core.configuration
end

def formatter
  configuration.formatter
end

def require_all_files(configuration)
  configuration.files_to_run.map {|f| require f }
end

def run(args = [])
  Rspec::Core::CommandLineOptions.parse(args).apply(configuration)
  require_all_files(configuration)
  
  total_examples_to_run = Rspec::Core.world.total_examples_to_run
  old_sync, formatter.output.sync = formatter.output.sync, true if formatter.output.respond_to?(:sync=)
  suite_success = true
  formatter_supports_sync = formatter.output.respond_to?(:sync=)
  old_sync, formatter.output.sync = formatter.output.sync, true if formatter_supports_sync
  formatter.start(total_examples_to_run) # start the clock
  start = Time.now
  Rspec::Core.world.example_groups_to_run.each do |example_group|
    suite_success &= example_group.run(formatter)
  end
  formatter.start_dump(Time.now - start)
  formatter.dump_failures
  formatter.dump_summary
  formatter.dump_pending
  formatter.close
  formatter.output.sync = old_sync if formatter_supports_sync
  suite_success
end