diff options
Diffstat (limited to 'cmd2/argparse_completer.py')
| -rw-r--r-- | cmd2/argparse_completer.py | 66 |
1 files changed, 29 insertions, 37 deletions
diff --git a/cmd2/argparse_completer.py b/cmd2/argparse_completer.py index a877841a..d373a822 100644 --- a/cmd2/argparse_completer.py +++ b/cmd2/argparse_completer.py @@ -105,10 +105,7 @@ class AutoCompleter(object): self._flags = [] # all flags in this command self._flag_to_action = {} # maps flags to the argparse action object self._positional_actions = [] # actions for positional arguments (by position index) - - # maps action to subcommand autocompleter: - # action -> dict(sub_command -> completer) - self._positional_completers = {} + self._subcommand_action = None # this will be set if self._parser has subcommands # Start digging through the argparse structures. # _actions is the top level container of parameter definitions @@ -123,15 +120,9 @@ class AutoCompleter(object): # Otherwise this is a positional parameter else: self._positional_actions.append(action) - + # Check if this action defines subcommands if isinstance(action, argparse._SubParsersAction): - sub_completers = {} - - # Create an AutoCompleter for each subcommand of this command - for subcmd in action.choices: - sub_completers[subcmd] = AutoCompleter(action.choices[subcmd], cmd2_app) - - self._positional_completers[action] = sub_completers + self._subcommand_action = action def complete_command(self, tokens: List[str], text: str, line: str, begidx: int, endidx: int) -> List[str]: """Complete the command using the argparse metadata and provided argument dictionary""" @@ -259,11 +250,10 @@ class AutoCompleter(object): action = self._positional_actions[pos_index] # Are we at a subcommand? If so, forward to the matching completer - if isinstance(action, argparse._SubParsersAction): - sub_completers = self._positional_completers[action] - if token in sub_completers: - return sub_completers[token].complete_command(tokens[token_index:], text, line, - begidx, endidx) + if action == self._subcommand_action: + if token in self._subcommand_action.choices: + completer = AutoCompleter(self._subcommand_action.choices[token], self._cmd2_app) + return completer.complete_command(tokens[token_index:], text, line, begidx, endidx) else: # Invalid subcommand entered, so no way to complete remaining tokens return [] @@ -404,7 +394,7 @@ class AutoCompleter(object): return completions - def complete_command_help(self, tokens: List[str], text: str, line: str, begidx: int, endidx: int) -> List[str]: + def complete_subcommand_help(self, tokens: List[str], text: str, line: str, begidx: int, endidx: int) -> List[str]: """ Supports cmd2's help command in the completion of subcommand names :param tokens: command line tokens @@ -414,31 +404,33 @@ class AutoCompleter(object): :param endidx: the ending index of the prefix text :return: List of subcommand completions """ - for token_index, token in enumerate(tokens[1:], start=1): - if self._positional_completers: - # For now argparse only allows 1 subcommand group per level - # so this will only loop once. - for completers in self._positional_completers.values(): - if token in completers: - return completers[token].complete_command_help(tokens[token_index:], text, - line, begidx, endidx) - else: - return utils.basic_complete(text, line, begidx, endidx, completers.keys()) + # If our parser has subcommands, we must examine the tokens and check if any reference one. + # If so, we will let the subcommand's parser handle the rest of the tokens via another AutoCompleter. + if self._subcommand_action is not None: + for token_index, token in enumerate(tokens[1:], start=1): + if token in self._subcommand_action.choices: + completer = AutoCompleter(self._subcommand_action.choices[token], self._cmd2_app) + return completer.complete_subcommand_help(tokens[token_index:], text, line, begidx, endidx) + elif token_index == len(tokens) - 1: + # Since this is the last token, we will attempt to complete it + return utils.basic_complete(text, line, begidx, endidx, self._subcommand_action.choices) + return [] def format_help(self, tokens: List[str]) -> str: """ - Retrieve help text of a subcommand + Supports cmd2's help command in the retrieval of help text :param tokens: command line tokens - :return: help text of the subcommand being queried + :return: help text of the commmand being queried """ - for token_index, token in enumerate(tokens[1:], start=1): - if self._positional_completers: - # For now argparse only allows 1 subcommand group per level - # so this will only loop once. - for completers in self._positional_completers.values(): - if token in completers: - return completers[token].format_help(tokens[token_index:]) + # If our parser has subcommands, we must examine the tokens and check if any reference one. + # If so, we will let the subcommand's parser handle the rest of the tokens via another AutoCompleter. + if self._subcommand_action is not None: + for token_index, token in enumerate(tokens[1:], start=1): + if token in self._subcommand_action.choices: + completer = AutoCompleter(self._subcommand_action.choices[token], self._cmd2_app) + return completer.format_help(tokens[token_index:]) + return self._parser.format_help() def _complete_for_arg(self, arg: argparse.Action, |