Python termios.TCSAFLUSH Examples

def wait_key():
    ''' Wait for a key press on the console and return it. '''
    result = None
    if os.name == 'nt':
        import msvcrt
        result = msvcrt.getch()
    else:
        import termios
        fd = sys.stdin.fileno()

        oldterm = termios.tcgetattr(fd)
        newattr = termios.tcgetattr(fd)
        newattr[3] = newattr[3] & ~termios.ICANON & ~termios.ECHO
        termios.tcsetattr(fd, termios.TCSANOW, newattr)

        try:
            result = sys.stdin.read(1)
        except IOError:
            pass
        finally:
            termios.tcsetattr(fd, termios.TCSAFLUSH, oldterm)

    return result 

def getch():
        """Make a get character keyboard method for Posix machines.
        """
        fd = sys.stdin.fileno()
        old = termios.tcgetattr(fd)
        new = termios.tcgetattr(fd)
        new[3] = new[3] & ~termios.ICANON & ~termios.ECHO
        new[6][termios.VMIN] = 1
        new[6][termios.VTIME] = 0
        termios.tcsetattr(fd, termios.TCSANOW, new)
        key = None
        try:
            key = os.read(fd, 4)
        finally:
            termios.tcsetattr(fd, termios.TCSAFLUSH, old)
        return key 

def getch():
        """getch function
        """
        fd = sys.stdin.fileno()
        old = termios.tcgetattr(fd)
        new = termios.tcgetattr(fd)
        new[3] = new[3] & ~termios.ICANON & ~termios.ECHO
        new[6][termios.VMIN] = 1
        new[6][termios.VTIME] = 0
        termios.tcsetattr(fd, termios.TCSANOW, new)
        key = None
        try:
            key = os.read(fd, 80)
        finally:
            termios.tcsetattr(fd, termios.TCSAFLUSH, old)
        return key 

def wait_key():
    """ Wait for a key press on the console and return it. """
    result = None
    if os.name == 'nt':
        result = input("Press Enter to continue...")
    else:
        import termios
        fd = sys.stdin.fileno()

        oldterm = termios.tcgetattr(fd)
        newattr = termios.tcgetattr(fd)
        newattr[3] = newattr[3] & ~termios.ICANON & ~termios.ECHO
        termios.tcsetattr(fd, termios.TCSANOW, newattr)

        try:
            result = sys.stdin.read(1)
        except IOError:
            pass
        finally:
            termios.tcsetattr(fd, termios.TCSAFLUSH, oldterm)

    return result 

def __init__(self, is_gui=False):
        self.is_gui = is_gui
        if os.name == "nt" or self.is_gui:
            pass
        else:
            # Save the terminal settings
            self.file_desc = sys.stdin.fileno()
            self.new_term = termios.tcgetattr(self.file_desc)
            self.old_term = termios.tcgetattr(self.file_desc)

            # New terminal setting unbuffered
            self.new_term[3] = (self.new_term[3] & ~termios.ICANON & ~termios.ECHO)
            termios.tcsetattr(self.file_desc, termios.TCSAFLUSH, self.new_term)

            # Support normal-terminal reset at exit
            atexit.register(self.set_normal_term) 

def __init__(self):
        '''Creates a KBHit object that you can call to do various keyboard things.
        '''

        if os.name == 'nt':
            pass

        else:

            # Save the terminal settings
            self.fd = sys.stdin.fileno()
            self.new_term = termios.tcgetattr(self.fd)
            self.old_term = termios.tcgetattr(self.fd)

            # New terminal setting unbuffered
            self.new_term[3] = (self.new_term[3] & ~termios.ICANON & ~termios.ECHO)
            termios.tcsetattr(self.fd, termios.TCSAFLUSH, self.new_term)

            # Support normal-terminal reset at exit
            atexit.register(self.set_normal_term) 

def SetTerminalRaw(fd, restore=False):
  """Set controlling terminal to raw mode.

  Set controlling terminal to raw mode and, if requested, register an
  exit handler to restore controlling terminal attribute on exit.

  Args:
    fd: file descriptor of the controlling terminal.
    restore: whether terminal mode should be restored on exit

  Returns:
    None.
  """

  if restore:
    when = termios.TCSAFLUSH
    orig_attr = termios.tcgetattr(fd)
    atexit.register(lambda: termios.tcsetattr(fd, when, orig_attr))
  tty.setraw(fd) 

def __init__(self):
        '''Creates a KBHit object that you can call to do various keyboard things.
        '''

        if os.name == 'nt':
            pass
        
        else:
    
            # Save the terminal settings
            self.fd = sys.stdin.fileno()
            self.new_term = termios.tcgetattr(self.fd)
            self.old_term = termios.tcgetattr(self.fd)
    
            # New terminal setting unbuffered
            self.new_term[3] = (self.new_term[3] & ~termios.ICANON & ~termios.ECHO)
            termios.tcsetattr(self.fd, termios.TCSAFLUSH, self.new_term)
    
            # Support normal-terminal reset at exit
            atexit.register(self.set_normal_term) 

def restart(self, cmd):
		if not self.completed:
			self.process_input("\n\033[01;31mProcess killed.\033[00m\r\n")
			os.kill(self.pid, signal.SIGHUP)
			thread = self.thread
			thread.stop()
			while thread.alive:
				QCoreApplication.processEvents()

		self.exit_pipe, child_pipe = os.pipe()
		pid, fd = pty.fork()
		if pid == 0:
			try:
				os.environ["TERM"] = "xterm-256color"
				retval = subprocess.call(cmd, close_fds=True)
				os.write(2, "\033[01;34mProcess has completed.\033[00m\n")
				os.write(child_pipe, "t")
				os._exit(retval)
			except:
				pass
			os.write(2, "\033[01;31mCommand '" + cmd[0] + "' failed to execute.\033[00m\n")
			os.write(child_pipe, "f")
			os._exit(1)

		os.close(child_pipe)
		self.process_input("\033[01;34mStarted process with PID %d.\033[00m\r\n" % pid)

		self.pid = pid
		self.data_pipe = fd
		self.completed = False

		# Initialize terminal settings
		fcntl.ioctl(self.data_pipe, termios.TIOCSWINSZ, struct.pack("hhhh", self.rows, self.cols, 0, 0))
		attribute = termios.tcgetattr(self.data_pipe)
		termios.tcsetattr(self.data_pipe, termios.TCSAFLUSH, attribute)

		self.thread = TerminalUpdateThread(self, self.data_pipe, self.exit_pipe)
		self.thread.start() 

def cbreak(self):
        """Return a context manager that enters 'cbreak' mode: disabling line
        buffering of keyboard input, making characters typed by the user
        immediately available to the program.  Also referred to as 'rare'
        mode, this is the opposite of 'cooked' mode, the default for most
        shells.

        In 'cbreak' mode, echo of input is also disabled: the application must
        explicitly print any input received, if they so wish.

        More information can be found in the manual page for curses.h,
        http://www.openbsd.org/cgi-bin/man.cgi?query=cbreak

        The python manual for curses,
        http://docs.python.org/2/library/curses.html

        Note also that setcbreak sets VMIN = 1 and VTIME = 0,
        http://www.unixwiz.net/techtips/termios-vmin-vtime.html
        """
        if self.keyboard_fd is not None:
            # save current terminal mode,
            save_mode = termios.tcgetattr(self.keyboard_fd)
            tty.setcbreak(self.keyboard_fd, termios.TCSANOW)
            try:
                yield
            finally:
                # restore prior mode,
                termios.tcsetattr(self.keyboard_fd,
                                  termios.TCSAFLUSH,
                                  save_mode)
        else:
            yield 

def set_normal_term(self):
        """ Resets to normal terminal.  On Windows this is a no-op. """
        if os.name == "nt" or self.is_gui:
            pass
        else:
            termios.tcsetattr(self.file_desc, termios.TCSAFLUSH, self.old_term) 

def close(self, delay = 0):
                if delay:
                    time.sleep(delay)
                    termios.tcflush(self._fd, termios.TCIFLUSH)
                termios.tcsetattr(self._fd, termios.TCSAFLUSH, self._old) 

def close(self, delay = 0):
                if delay:
                    time.sleep(delay)
                    termios.tcflush(self._fd, termios.TCIFLUSH)
                termios.tcsetattr(self._fd, termios.TCSAFLUSH, self._old) 

def close(self, delay = 0):
                if delay:
                    time.sleep(delay)
                    termios.tcflush(self._fd, termios.TCIFLUSH)
                termios.tcsetattr(self._fd, termios.TCSAFLUSH, self._old) 

def read_key():
    fd = sys.stdin.fileno()

    oldterm = termios.tcgetattr(fd)
    newattr = termios.tcgetattr(fd)
    newattr[3] = newattr[3] & ~termios.ICANON & ~termios.ECHO
    termios.tcsetattr(fd, termios.TCSANOW, newattr)

    oldstdinfl = fcntl.fcntl(1, fcntl.F_GETFL)
    try:
        seq = ''
        while characters_left_for_sequence(seq):
            if len(seq) > 0:
                fcntl.fcntl(1, fcntl.F_SETFL, oldstdinfl | os.O_NONBLOCK)
            ch = sys.stdin.read(1)
            if not ch:
                break
            seq += ch
    except IOError:
        pass
    finally:
        termios.tcsetattr(fd, termios.TCSAFLUSH, oldterm)
        fcntl.fcntl(1, fcntl.F_SETFL, oldstdinfl)

    try:
        result = TerminalKeyDict[seq]
    except KeyError:
        result = seq

    return result 

def restore_terminal(self):
        fd = sys.stdin.fileno()
        if self.oldTerm:
            termios.tcsetattr(fd, termios.TCSAFLUSH, self.oldTerm)
        if self.oldFlags:
            fcntl.fcntl(fd, fcntl.F_SETFL, self.oldFlags) 

def disable_echo(fd):
    old = termios.tcgetattr(fd)
    new = cfmakeraw(old)
    flags = getattr(termios, 'TCSASOFT', 0)
    if not mitogen.core.IS_WSL:
        # issue #319: Windows Subsystem for Linux as of July 2018 throws EINVAL
        # if TCSAFLUSH is specified.
        flags |= termios.TCSAFLUSH
    termios.tcsetattr(fd, flags, new) 

def restore_terminal(self):
        fd = sys.stdin.fileno()
        if self.oldTerm:
            termios.tcsetattr(fd, termios.TCSAFLUSH, self.oldTerm)
        if self.oldFlags:
            fcntl.fcntl(fd, fcntl.F_SETFL, self.oldFlags) 

def wait_key(message = ''):
        ''' Wait for a key press on the console and return it. '''
        if message != '':
            print (message)

        result = None
        if os.name == 'nt':
            import msvcrt
            result = msvcrt.getch()
        else:
            import termios
            fd = sys.stdin.fileno()

            oldterm = termios.tcgetattr(fd)
            newattr = termios.tcgetattr(fd)
            newattr[3] = newattr[3] & ~termios.ICANON & ~termios.ECHO
            termios.tcsetattr(fd, termios.TCSANOW, newattr)

            try:
                result = sys.stdin.read(1)
            except IOError:
                pass
            finally:
                termios.tcsetattr(fd, termios.TCSAFLUSH, oldterm)

        return result 

def cleanup(self):
            termios.tcsetattr(self.fd, termios.TCSAFLUSH, self.old) 

def stop(state):
    fd = sys.stdin.fileno()
    # restore old state
    termios.tcsetattr(fd, termios.TCSAFLUSH, state[1])
    fcntl.fcntl(fd, fcntl.F_SETFL, state[0]) 

def __enter__(self):
        # Save the terminal settings
        self.fd = sys.stdin.fileno()
        self.new_term = termios.tcgetattr(self.fd)
        self.old_term = termios.tcgetattr(self.fd)

        # New terminal setting unbuffered
        self.new_term[3] = (self.new_term[3] & ~termios.ICANON & ~termios.ECHO)
        termios.tcsetattr(self.fd, termios.TCSAFLUSH, self.new_term)

        return self 

def __exit__(self, type, value, traceback):
        termios.tcsetattr(self.fd, termios.TCSAFLUSH, self.old_term) 

def set_normal_term(self):
        ''' Resets to normal terminal.  On Windows this is a no-op.
        '''
        
        if os.name == 'nt':
            pass
        
        else:
            termios.tcsetattr(self.fd, termios.TCSAFLUSH, self.old_term) 

def cleanup(self):
            termios.tcsetattr(self.fd, termios.TCSAFLUSH, self.old) 

def cleanup(self):
            termios.tcsetattr(self.fd, termios.TCSAFLUSH, self.old) 

def pause(secs):
    fd = sys.stdin.fileno()

    oldterm = termios.tcgetattr(fd)
    newattr = termios.tcgetattr(fd)
    newattr[3] = newattr[3] & ~termios.ICANON & ~termios.ECHO
    termios.tcsetattr(fd, termios.TCSANOW, newattr)

    oldflags = fcntl.fcntl(fd, fcntl.F_GETFL)
    fcntl.fcntl(fd, fcntl.F_SETFL, oldflags | os.O_NONBLOCK)

    try:
        ctrlc = False
        paused = False
        t = secs / 0.1
        i = 0
        while i < t:
            if keypressed():
                paused = True
                break
            sleep(0.1)
            i += 1

        if paused:
            while True:
                if keypressed():
                    break
                sleep(0.1)
    except KeyboardInterrupt:
        ctrlc = True

    termios.tcsetattr(fd, termios.TCSAFLUSH, oldterm)
    fcntl.fcntl(fd, fcntl.F_SETFL, oldflags)
    if ctrlc:
        sys.exit(1) 

def main(raw_args):
  parser = argparse.ArgumentParser(
      description="Use your keyboard as your phone's keyboard.")
  logging_common.AddLoggingArguments(parser)
  script_common.AddDeviceArguments(parser)
  args = parser.parse_args(raw_args)

  logging_common.InitializeLogging(args)

  devices = script_common.GetDevices(args.devices, None)
  if len(devices) > 1:
    raise MultipleDevicesError(devices)

  def next_char():
    while True:
      yield sys.stdin.read(1)

  try:
    fd = sys.stdin.fileno()

    # See man 3 termios for more info on what this is doing.
    old_attrs = termios.tcgetattr(fd)
    new_attrs = copy.deepcopy(old_attrs)
    new_attrs[tty.LFLAG] = new_attrs[tty.LFLAG] & ~(termios.ICANON)
    new_attrs[tty.CC][tty.VMIN] = 1
    new_attrs[tty.CC][tty.VTIME] = 0
    termios.tcsetattr(fd, termios.TCSAFLUSH, new_attrs)

    Keyboard(devices[0], next_char())
  finally:
    termios.tcsetattr(fd, termios.TCSAFLUSH, old_attrs)
  return 0 

def cleanup(self):
            if self.old is not None:
                termios.tcsetattr(self.fd, termios.TCSAFLUSH, self.old) 

def main(raw_args):
  parser = argparse.ArgumentParser(
      description="Use your keyboard as your phone's keyboard.")
  logging_common.AddLoggingArguments(parser)
  script_common.AddDeviceArguments(parser)
  args = parser.parse_args(raw_args)

  logging_common.InitializeLogging(args)

  devices = script_common.GetDevices(args.devices, None)
  if len(devices) > 1:
    raise MultipleDevicesError(devices)

  def next_char():
    while True:
      yield sys.stdin.read(1)

  try:
    fd = sys.stdin.fileno()

    # See man 3 termios for more info on what this is doing.
    old_attrs = termios.tcgetattr(fd)
    new_attrs = copy.deepcopy(old_attrs)
    new_attrs[tty.LFLAG] = new_attrs[tty.LFLAG] & ~(termios.ICANON)
    new_attrs[tty.CC][tty.VMIN] = 1
    new_attrs[tty.CC][tty.VTIME] = 0
    termios.tcsetattr(fd, termios.TCSAFLUSH, new_attrs)

    Keyboard(devices[0], next_char())
  finally:
    termios.tcsetattr(fd, termios.TCSAFLUSH, old_attrs)
  return 0