class Byebug::ControlCommandProcessor

def initialize(interface)
  super()
  @interface = interface
  @byebug_context_was_dead = true # Assume we haven't started.
end

def process_commands(verbose=false)
  control_cmds = Command.commands.select do |cmd|
    cmd.allow_in_control
  end
  state = State.new(@interface, control_cmds)
  commands = control_cmds.map{|cmd| cmd.new(state) }
  unless @byebug_context_was_dead
    if Byebug.annotate.to_i > 2
      aprint 'exited'
      print "The program finished.\n"
    end
    @byebug_context_was_dead = true
  end
  while input = @interface.read_command(prompt(nil))
    print "+#{input}" if verbose
    catch(:debug_error) do
      if cmd = commands.find{|c| c.match(input) }
        cmd.execute
      else
        errmsg "Unknown command\n"
      end
    end
  end
rescue IOError, Errno::EPIPE
rescue Exception
  print "INTERNAL ERROR!!! #{$!}\n" rescue nil
  print $!.backtrace.map{|l| "\t#{l}"}.join("\n") rescue nil
ensure
  @interface.close
end

def prompt(context)
  p = '(byebug:ctrl) '
  p = afmt("pre-prompt")+p+"\n"+afmt("prompt") if
    Byebug.annotate.to_i > 2
  return p
end