Python readline 模块，__doc__() 实例源码

def create_argparser(self, command):
        try:
            argparse_args = getattr(self, "argparse_" + command)
        except AttributeError:
            return None
        doc_lines = getattr(self, "do_" + command).__doc__.expandtabs().splitlines()
        if '' in doc_lines:
            blank_idx = doc_lines.index('')
            usage = doc_lines[:blank_idx]
            description = doc_lines[blank_idx+1:]
        else:
            usage = doc_lines
            description = []
        parser = argparse.ArgumentParser(
            prog=command,
            usage='\n'.join(usage),
            description='\n'.join(description)
        )
        for args, kwargs in argparse_args:
            parser.add_argument(*args, **kwargs)
        return parser

def do_help(self, line):
        """help [COMMAND]

           List available commands with no arguments, or detailed help when
           a command is provided.
        """
        # We provide a help function so that we can trim the leading spaces
        # from the docstrings. The builtin help function doesn't do that.
        if not line:
            cmd.Cmd.do_help(self, line)
            self.print("Use Control-D to exit rshell.")
            return
        parser = self.create_argparser(line)
        if parser:
            parser.print_help()
            return
        try:
            doc = getattr(self, 'do_' + line).__doc__
            if doc:
                self.print("%s" % trim(doc))
                return
        except AttributeError:
            pass
        self.print(str(self.nohelp % (line,)))

def init_history(self, histfile):

        #readline.parse_and_bind("bind ^I rl_complete")

        # Register our completer function
        readline.set_completer(SimpleCompleter(G.cmmands.keys()).complete)


        #readline.set_completer(TabCompleter().complete)
        ### Add autocompletion
        if 'libedit' in readline.__doc__:
            readline.parse_and_bind("bind -e")
            readline.parse_and_bind("bind '\t' rl_complete")
        else:
            readline.parse_and_bind("tab: complete")

        # Use the tab key for completion
        #readline.parse_and_bind('tab: complete')
        if hasattr(readline, "read_history_file"):
            try:
                readline.read_history_file(histfile)
            except:
                pass

            atexit.register(self.save_history, histfile)

def __enter__(self):
        self._original_completer = readline.get_completer()
        self._original_delims = readline.get_completer_delims()

        readline.set_completer(self.complete)
        readline.set_completer_delims(' \t\n;')

        # readline can be implemented using GNU readline or libedit
        # which have different configuration syntax
        if 'libedit' in readline.__doc__:
            readline.parse_and_bind('bind ^I rl_complete')
        else:
            readline.parse_and_bind('tab: complete')

def test_context_manager_libedit(self, mock_readline):
        mock_readline.__doc__ = 'libedit'
        self._test_context_manager_with_mock_readline(mock_readline)

def test_context_manager_readline(self, mock_readline):
        mock_readline.__doc__ = 'GNU readline'
        self._test_context_manager_with_mock_readline(mock_readline)

def enable_tab_completion(unused_command):
    """Enables readline tab completion using the system specific syntax."""
    libedit = 'libedit' in readline.__doc__
    command = 'bind ^I rl_complete' if libedit else 'tab: complete'
    readline.parse_and_bind(command)

def choice():
        global name
        global module
        try:
            if module == "":
                readline.set_completer(completer)
                readline.set_completer_delims('')
                if 'libedit' in readline.__doc__:
                    readline.parse_and_bind("bind ^I rl_complete")
                else:
                    readline.parse_and_bind("tab: complete")
                raw_choice = raw_input(" >>  [" + name + "]# ")
                choice = raw_choice
                exec_menu(choice)
            else:
                readline.set_completer(completer)
                readline.set_completer_delims('')
                if 'libedit' in readline.__doc__:
                    readline.parse_and_bind("bind ^I rl_complete")
                else:
                    readline.parse_and_bind("tab: complete")
                raw_choice = raw_input(" >>  [" + name + "][" + module + "]# ")
                choice = raw_choice
                exec_menu(choice)
        except EOFError:
            pass
        except KeyboardInterrupt:
            exec_menu('exit')

def __enter__(self):
        self._original_completer = readline.get_completer()
        self._original_delims = readline.get_completer_delims()

        readline.set_completer(self.complete)
        readline.set_completer_delims(' \t\n;')

        # readline can be implemented using GNU readline or libedit
        # which have different configuration syntax
        if 'libedit' in readline.__doc__:
            readline.parse_and_bind('bind ^I rl_complete')
        else:
            readline.parse_and_bind('tab: complete')

def test_context_manager_libedit(self, mock_readline):
        mock_readline.__doc__ = 'libedit'
        self._test_context_manager_with_mock_readline(mock_readline)

def test_context_manager_readline(self, mock_readline):
        mock_readline.__doc__ = 'GNU readline'
        self._test_context_manager_with_mock_readline(mock_readline)

def enable_tab_completion(unused_command):
    """Enables readline tab completion using the system specific syntax."""
    libedit = 'libedit' in readline.__doc__
    command = 'bind ^I rl_complete' if libedit else 'tab: complete'
    readline.parse_and_bind(command)

def launch_ui(args):
    # Setup tab completion
    try:
        import readline
    except ImportError:
        print('%s[!] Module \'readline\' not available. Tab complete disabled.%s' % (Colors.R, Colors.N))
    else:
        import rlcompleter
        if 'libedit' in readline.__doc__:
            readline.parse_and_bind('bind ^I rl_complete')
        else:
            readline.parse_and_bind('tab: complete')
            readline.set_completer_delims(re.sub('[/-]', '', readline.get_completer_delims()))
    # Instantiate the UI object
    x = cli.CLI(cli.Mode.CONSOLE)
    # check for and run version check
    if args.check:
        if not x.version_check(): return
    # Check for and run script session
    if args.script_file:
        x.do_resource(args.script_file)
    # Run the UI
    try: 
        x.cmdloop()
    except KeyboardInterrupt: 
        print('')


# ======================================================================================================================
# MAIN
# ======================================================================================================================

def setup_readline():
    """Sets up the readline module and completion supression, if available."""
    global RL_COMPLETION_SUPPRESS_APPEND, RL_LIB, RL_CAN_RESIZE
    if RL_COMPLETION_SUPPRESS_APPEND is not None:
        return
    try:
        import readline
    except ImportError:
        return
    import ctypes
    import ctypes.util
    readline.set_completer_delims(' \t\n')
    if not readline.__file__.endswith('.py'):
        RL_LIB = lib = ctypes.cdll.LoadLibrary(readline.__file__)
        try:
            RL_COMPLETION_SUPPRESS_APPEND = ctypes.c_int.in_dll(
                lib, 'rl_completion_suppress_append')
        except ValueError:
            # not all versions of readline have this symbol, ie Macs sometimes
            RL_COMPLETION_SUPPRESS_APPEND = None
        RL_CAN_RESIZE = hasattr(lib, 'rl_reset_screen_size')
    env = builtins.__xonsh_env__
    # reads in history
    readline.set_history_length(-1)
    ReadlineHistoryAdder()
    # sets up IPython-like history matching with up and down
    readline.parse_and_bind('"\e[B": history-search-forward')
    readline.parse_and_bind('"\e[A": history-search-backward')
    # Setup Shift-Tab to indent
    readline.parse_and_bind('"\e[Z": "{0}"'.format(env.get('INDENT')))

    # handle tab completion differences found in libedit readline compatibility
    # as discussed at http://stackoverflow.com/a/7116997
    if readline.__doc__ and 'libedit' in readline.__doc__:
        readline.parse_and_bind("bind ^I rl_complete")
    else:
        readline.parse_and_bind("tab: complete")

def __init__(self, stream_desc, nodeid, *_a, **kw):

        self.nodeid = kw.get('nodeid', '1')
        self.tun_if = None

        self.wpan_api = WpanApi(stream_desc, nodeid)
        self.wpan_api.queue_register(SPINEL.HEADER_DEFAULT)
        self.wpan_api.callback_register(SPINEL.PROP_STREAM_NET,
                                        self.wpan_callback)

        Cmd.__init__(self)
        Cmd.identchars = string.ascii_letters + string.digits + '-'

        if sys.stdin.isatty():
            self.prompt = MASTER_PROMPT + " > "
        else:
            self.use_rawinput = 0
            self.prompt = ""

        SpinelCliCmd.command_names.sort()

        self.history_filename = os.path.expanduser("~/.spinel-cli-history")

        try:
            import readline
            try:
                readline.read_history_file(self.history_filename)
            except IOError:
                pass
        except ImportError:
            print("Module readline unavailable")
        else:
            import rlcompleter
            if 'libedit' in readline.__doc__:
                readline.parse_and_bind('bind ^I rl_complete')
            else:
                readline.parse_and_bind('tab: complete')

        self.prop_set_value(SPINEL.PROP_IPv6_ICMP_PING_OFFLOAD, 1)
        self.prop_set_value(SPINEL.PROP_THREAD_RLOC16_DEBUG_PASSTHRU, 1)

def do_help(self, line):
        if line:
            cmd, _arg, _unused = self.parseline(line)
            try:
                doc = getattr(self, 'do_' + cmd).__doc__
            except AttributeError:
                doc = None
            if doc:
                self.log("%s\n" % textwrap.dedent(doc))
            else:
                self.log("No help on %s\n" % (line))
        else:
            self.print_topics(
                "\nAvailable commands (type help <name> for more information):",
                SpinelCliCmd.command_names, 15, 80)

def init_env(self):
        if 'libedit' in readline.__doc__:
            readline.parse_and_bind("bind ^I rl_complete")
        else:
            readline.parse_and_bind("tab: complete")