""" Customizations of Python cmd module. $Id$ Copyright (C) 2010 Internet Systems Consortium ("ISC") Permission to use, copy, modify, and distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. """ import cmd, glob try: import readline have_readline = True except ImportError: have_readline = False class Cmd(cmd.Cmd): emptyline_repeats_last_command = False EOF_exits_command_loop = True identchars = cmd.IDENTCHARS + "/-." histfile = None def __init__(self, argv = None): cmd.Cmd.__init__(self) if argv: self.onecmd(" ".join(argv)) else: self.cmdloop_with_history() def do_EOF(self, arg): if self.EOF_exits_command_loop and self.prompt: print return self.EOF_exits_command_loop def do_exit(self, arg): return True do_quit = do_exit def emptyline(self): if self.emptyline_repeats_last_command: cmd.Cmd.emptyline(self) def filename_complete(self, text, line, begidx, endidx): return glob.glob(text + "*") if have_readline: def cmdloop_with_history(self): old_completer_delims = readline.get_completer_delims() if self.histfile is not None: try: readline.read_history_file(self.histfile) except IOError: pass try: readline.set_completer_delims("".join(set(old_completer_delims) - set(self.identchars))) self.cmdloop() finally: if self.histfile is not None and readline.get_current_history_length(): readline.write_history_file(self.histfile) readline.set_completer_delims(old_completer_delims) else: cmdloop_with_history = cmd.Cmd.cmdloop def yes_or_no(prompt, full_word_required = False): """ Ask a yes-or-no question. """ while True: answer = raw_input(prompt).strip().lower() if answer == "yes" or (not full_word_required and answer[0] == "y"): return True if answer == "no" or (not full_word_required and answer[0] == "n"): return False print 'Please answer "yes" or "no"'