loader.py 文件源码

def finalizeOptions(self, availableTargets: list):
        targetOption = self._parser.add_argument("targets", metavar="TARGET", nargs=argparse.ZERO_OR_MORE,
                                                 help="The targets to build", choices=availableTargets + [[]])
        if argcomplete and "_ARGCOMPLETE" in os.environ:
            # if IS_FREEBSD: # FIXME: for some reason this won't work
            excludes = ["-t", "--skip-dependencies"]
            if sys.platform.startswith("freebsd"):
                excludes += ["--freebsd-builder-copy-only", "--freebsd-builder-hostname",
                             "--freebsd-builder-output-path"]

            visibleTargets = availableTargets.copy()
            visibleTargets.remove("__run_everything__")
            targetCompleter = argcomplete.completers.ChoicesCompleter(visibleTargets)
            targetOption.completer = targetCompleter
            # make sure we get target completion for the unparsed args too by adding another zero_or more options
            # not sure why this works but it's a nice hack
            unparsed = self._parser.add_argument("targets", metavar="TARGET", type=list, nargs=argparse.ZERO_OR_MORE,
                                                 help=argparse.SUPPRESS, choices=availableTargets)
            unparsed.completer = targetCompleter
            argcomplete.autocomplete(
                self._parser,
                always_complete_options=None,  # don't print -/-- by default
                exclude=excludes,  # hide these options from the output
                print_suppressed=True,  # also include target-specific options
            )