def Build(self, argv, arg, base_opts):
        """Given flags to complete/compgen, return a UserSpec."""
        cmd_ev = self.cmd_ev

        actions = []

        # NOTE: bash doesn't actually check the name until completion time, but
        # obviously it's better to check here.
        if arg.F:
            func_name = arg.F
            func = cmd_ev.procs.get(func_name)
            if func is None:
                raise error.Usage('Function %r not found' % func_name)
            actions.append(
                completion.ShellFuncAction(cmd_ev, func, self.comp_lookup))

        # NOTE: We need completion for -A action itself!!!  bash seems to have it.
        for name in arg.actions:
            if name == 'alias':
                a = _FixedWordsAction(self.parse_ctx.aliases)

            elif name == 'binding':
                # TODO: Where do we get this from?
                a = _FixedWordsAction(['vi-delete'])

            elif name == 'command':
                # compgen -A command in bash is SIX things: aliases, builtins,
                # functions, keywords, external commands relative to the current
                # directory, and external commands in $PATH.

                actions.append(_FixedWordsAction(consts.BUILTIN_NAMES))
                actions.append(_FixedWordsAction(self.parse_ctx.aliases))
                actions.append(_FixedWordsAction(cmd_ev.procs))
                actions.append(_FixedWordsAction(lexer_def.OSH_KEYWORD_NAMES))
                actions.append(completion.FileSystemAction(exec_only=True))

                # Look on the file system.
                a = completion.ExternalCommandAction(cmd_ev.mem)

            elif name == 'directory':
                a = completion.FileSystemAction(dirs_only=True)

            elif name == 'file':
                a = completion.FileSystemAction()

            elif name == 'function':
                a = _FixedWordsAction(cmd_ev.procs)

            elif name == 'job':
                a = _FixedWordsAction(['jobs-not-implemented'])

            elif name == 'user':
                a = completion.UsersAction()

            elif name == 'variable':
                a = completion.VariablesAction(cmd_ev.mem)

            elif name == 'helptopic':
                # Note: it would be nice to have 'helpgroup' for help -i too
                a = _FixedWordsAction(help_.TOPICS)

            elif name == 'setopt':
                names = [
                    opt.name for opt in option_def.All()
                    if opt.builtin == 'set'
                ]
                a = _FixedWordsAction(names)

            elif name == 'shopt':
                names = [
                    opt.name for opt in option_def.All()
                    if opt.builtin == 'shopt'
                ]
                a = _FixedWordsAction(names)

            elif name == 'signal':
                a = _FixedWordsAction(['TODO:signals'])

            elif name == 'stopped':
                a = _FixedWordsAction(['jobs-not-implemented'])

            else:
                raise NotImplementedError(name)

            actions.append(a)

        # e.g. -W comes after -A directory
        if arg.W is not None:  # could be ''
            # NOTES:
            # - Parsing is done at REGISTRATION time, but execution and splitting is
            #   done at COMPLETION time (when the user hits tab).  So parse errors
            #   happen early.
            w_parser = self.parse_ctx.MakeWordParserForPlugin(arg.W)

            arena = self.parse_ctx.arena
            try:
                arg_word = w_parser.ReadForPlugin()
            except error.Parse as e:
                ui.PrettyPrintError(e, arena)
                raise  # Let 'complete' or 'compgen' return 2

            a = completion.DynamicWordsAction(self.word_ev, self.splitter,
                                              arg_word, arena)
            actions.append(a)

        extra_actions = []
        if base_opts.get('plusdirs'):
            extra_actions.append(completion.FileSystemAction(dirs_only=True))

        # These only happen if there were zero shown.
        else_actions = []
        if base_opts.get('default'):
            else_actions.append(completion.FileSystemAction())
        if base_opts.get('dirnames'):
            else_actions.append(completion.FileSystemAction(dirs_only=True))

        if not actions and not else_actions:
            raise error.Usage('No actions defined in completion: %s' % argv)

        p = completion.DefaultPredicate
        if arg.X:
            filter_pat = arg.X
            if filter_pat.startswith('!'):
                p = completion.GlobPredicate(False, filter_pat[1:])
            else:
                p = completion.GlobPredicate(True, filter_pat)
        return completion.UserSpec(actions,
                                   extra_actions,
                                   else_actions,
                                   p,
                                   prefix=arg.P or '',
                                   suffix=arg.S or '')
示例#2
0
    def Build(self, argv, arg, base_opts):
        """Given flags to complete/compgen, return a UserSpec."""
        ex = self.ex

        actions = []

        # NOTE: bash doesn't actually check the name until completion time, but
        # obviously it's better to check here.
        if arg.F:
            func_name = arg.F
            func = ex.funcs.get(func_name)
            if func is None:
                raise args.UsageError('Function %r not found' % func_name)
            actions.append(
                completion.ShellFuncAction(ex, func, self.comp_lookup))

        # NOTE: We need completion for -A action itself!!!  bash seems to have it.
        for name in arg.actions:
            if name == 'alias':
                a = _FixedWordsAction(ex.aliases)

            elif name == 'binding':
                # TODO: Where do we get this from?
                a = _FixedWordsAction(['vi-delete'])

            elif name == 'command':
                # compgen -A command in bash is SIX things: aliases, builtins,
                # functions, keywords, external commands relative to the current
                # directory, and external commands in $PATH.

                actions.append(_FixedWordsAction(builtin.BUILTIN_NAMES))
                actions.append(_FixedWordsAction(ex.aliases))
                actions.append(_FixedWordsAction(ex.funcs))
                actions.append(_FixedWordsAction(lex.OSH_KEYWORD_NAMES))
                actions.append(completion.FileSystemAction(exec_only=True))

                # Look on the file system.
                a = completion.ExternalCommandAction(ex.mem)

            elif name == 'directory':
                a = completion.FileSystemAction(dirs_only=True)

            elif name == 'file':
                a = completion.FileSystemAction()

            elif name == 'function':
                a = _FixedWordsAction(ex.funcs)

            elif name == 'job':
                a = _FixedWordsAction(['jobs-not-implemented'])

            elif name == 'user':
                a = completion.UsersAction()

            elif name == 'variable':
                a = completion.VariablesAction(ex.mem)

            elif name == 'helptopic':
                a = _FixedWordsAction(osh_help.TOPIC_LOOKUP)

            elif name == 'setopt':
                a = _FixedWordsAction(state.SET_OPTION_NAMES)

            elif name == 'shopt':
                a = _FixedWordsAction(state.SHOPT_OPTION_NAMES)

            elif name == 'signal':
                a = _FixedWordsAction(['TODO:signals'])

            elif name == 'stopped':
                a = _FixedWordsAction(['jobs-not-implemented'])

            else:
                raise NotImplementedError(name)

            actions.append(a)

        # e.g. -W comes after -A directory
        if arg.W is not None:  # could be ''
            # NOTES:
            # - Parsing is done at REGISTRATION time, but execution and splitting is
            #   done at COMPLETION time (when the user hits tab).  So parse errors
            #   happen early.
            # - It's OK to reuse the same arena because this doesn't happen during
            #   translation.  TODO: But we need PushSource().  We should
            #   create SideArena instances that track back to the current location of
            #   the 'complete' builtin.
            arena = self.parse_ctx.arena
            w_parser = self.parse_ctx.MakeWordParserForPlugin(arg.W, arena)

            try:
                arg_word = w_parser.ReadForPlugin()
            except util.ParseError as e:
                ui.PrettyPrintError(e, self.parse_ctx.arena)
                raise  # Let 'complete' or 'compgen' return 2

            a = completion.DynamicWordsAction(self.word_ev, self.splitter,
                                              arg_word, arena)
            actions.append(a)

        extra_actions = []
        if base_opts.get('plusdirs'):
            extra_actions.append(completion.FileSystemAction(dirs_only=True))

        # These only happen if there were zero shown.
        else_actions = []
        if base_opts.get('default'):
            else_actions.append(completion.FileSystemAction())
        if base_opts.get('dirnames'):
            else_actions.append(completion.FileSystemAction(dirs_only=True))

        if not actions and not else_actions:
            raise args.UsageError('No actions defined in completion: %s' %
                                  argv)

        p = completion.DefaultPredicate
        if arg.X:
            filter_pat = arg.X
            if filter_pat.startswith('!'):
                p = completion.GlobPredicate(False, filter_pat[1:])
            else:
                p = completion.GlobPredicate(True, filter_pat)
        return completion.UserSpec(actions,
                                   extra_actions,
                                   else_actions,
                                   p,
                                   prefix=arg.P or '',
                                   suffix=arg.S or '')