"""Contains the logic for all of the default options for Flake8.""" import argparse from flake8 import defaults from flake8.options.manager import OptionManager def stage1_arg_parser() -> argparse.ArgumentParser: """Register the preliminary options on our OptionManager. The preliminary options include: - ``-v``/``--verbose`` - ``--output-file`` - ``--append-config`` - ``--config`` - ``--isolated`` - ``--enable-extensions`` """ parser = argparse.ArgumentParser(add_help=False) parser.add_argument( "-v", "--verbose", default=0, action="count", help="Print more information about what is happening in flake8. " "This option is repeatable and will increase verbosity each " "time it is repeated.", ) parser.add_argument( "--output-file", default=None, help="Redirect report to a file." ) # Config file options parser.add_argument( "--append-config", action="append", default=[], help="Provide extra config files to parse in addition to the files " "found by Flake8 by default. These files are the last ones read " "and so they take the highest precedence when multiple files " "provide the same option.", ) parser.add_argument( "--config", default=None, help="Path to the config file that will be the authoritative config " "source. This will cause Flake8 to ignore all other " "configuration files.", ) parser.add_argument( "--isolated", default=False, action="store_true", help="Ignore all configuration files.", ) # Plugin enablement options parser.add_argument( "--enable-extensions", help="Enable plugins and extensions that are otherwise disabled " "by default", ) parser.add_argument( "--require-plugins", help="Require specific plugins to be installed before running", ) return parser class JobsArgument: """Type callback for the --jobs argument.""" def __init__(self, arg: str) -> None: """Parse and validate the --jobs argument. :param arg: The argument passed by argparse for validation """ self.is_auto = False self.n_jobs = -1 if arg == "auto": self.is_auto = True elif arg.isdigit(): self.n_jobs = int(arg) else: raise argparse.ArgumentTypeError( f"{arg!r} must be 'auto' or an integer.", ) def __repr__(self) -> str: """Representation for debugging.""" return f"{type(self).__name__}({str(self)!r})" def __str__(self) -> str: """Format our JobsArgument class.""" return "auto" if self.is_auto else str(self.n_jobs) def register_default_options(option_manager: OptionManager) -> None: """Register the default options on our OptionManager. The default options include: - ``-q``/``--quiet`` - ``--color`` - ``--count`` - ``--diff`` - ``--exclude`` - ``--extend-exclude`` - ``--filename`` - ``--format`` - ``--hang-closing`` - ``--ignore`` - ``--extend-ignore`` - ``--per-file-ignores`` - ``--max-line-length`` - ``--max-doc-length`` - ``--indent-size`` - ``--select`` - ``--extend-select`` - ``--disable-noqa`` - ``--show-source`` - ``--statistics`` - ``--exit-zero`` - ``-j``/``--jobs`` - ``--tee`` - ``--benchmark`` - ``--bug-report`` """ add_option = option_manager.add_option add_option( "-q", "--quiet", default=0, action="count", parse_from_config=True, help="Report only file names, or nothing. This option is repeatable.", ) add_option( "--color", choices=("auto", "always", "never"), default="auto", help="Whether to use color in output. Defaults to `%(default)s`.", ) add_option( "--count", action="store_true", parse_from_config=True, help="Print total number of errors to standard output and " "set the exit code to 1 if total is not empty.", ) add_option( "--diff", action="store_true", help="(DEPRECATED) Report changes only within line number ranges in " "the unified diff provided on standard in by the user.", ) add_option( "--exclude", metavar="patterns", default=",".join(defaults.EXCLUDE), comma_separated_list=True, parse_from_config=True, normalize_paths=True, help="Comma-separated list of files or directories to exclude. " "(Default: %(default)s)", ) add_option( "--extend-exclude", metavar="patterns", default="", parse_from_config=True, comma_separated_list=True, normalize_paths=True, help="Comma-separated list of files or directories to add to the list " "of excluded ones.", ) add_option( "--filename", metavar="patterns", default="*.py", parse_from_config=True, comma_separated_list=True, help="Only check for filenames matching the patterns in this comma-" "separated list. (Default: %(default)s)", ) add_option( "--stdin-display-name", default="stdin", help="The name used when reporting errors from code passed via stdin. " "This is useful for editors piping the file contents to flake8. " "(Default: %(default)s)", ) # TODO(sigmavirus24): Figure out --first/--repeat # NOTE(sigmavirus24): We can't use choices for this option since users can # freely provide a format string and that will break if we restrict their # choices. add_option( "--format", metavar="format", default="default", parse_from_config=True, help="Format errors according to the chosen formatter.", ) add_option( "--hang-closing", action="store_true", parse_from_config=True, help="Hang closing bracket instead of matching indentation of opening " "bracket's line.", ) add_option( "--ignore", metavar="errors", parse_from_config=True, comma_separated_list=True, help=( f"Comma-separated list of error codes to ignore (or skip). " f"For example, ``--ignore=E4,E51,W234``. " f"(Default: {','.join(defaults.IGNORE)})" ), ) add_option( "--extend-ignore", metavar="errors", parse_from_config=True, comma_separated_list=True, help="Comma-separated list of error codes to add to the list of " "ignored ones. For example, ``--extend-ignore=E4,E51,W234``.", ) add_option( "--per-file-ignores", default="", parse_from_config=True, help="A pairing of filenames and violation codes that defines which " "violations to ignore in a particular file. The filenames can be " "specified in a manner similar to the ``--exclude`` option and the " "violations work similarly to the ``--ignore`` and ``--select`` " "options.", ) add_option( "--max-line-length", type=int, metavar="n", default=defaults.MAX_LINE_LENGTH, parse_from_config=True, help="Maximum allowed line length for the entirety of this run. " "(Default: %(default)s)", ) add_option( "--max-doc-length", type=int, metavar="n", default=None, parse_from_config=True, help="Maximum allowed doc line length for the entirety of this run. " "(Default: %(default)s)", ) add_option( "--indent-size", type=int, metavar="n", default=defaults.INDENT_SIZE, parse_from_config=True, help="Number of spaces used for indentation (Default: %(default)s)", ) add_option( "--select", metavar="errors", parse_from_config=True, comma_separated_list=True, help=( f"Comma-separated list of error codes to enable. " f"For example, ``--select=E4,E51,W234``. " f"(Default: {','.join(defaults.SELECT)})" ), ) add_option( "--extend-select", metavar="errors", parse_from_config=True, comma_separated_list=True, help=( "Comma-separated list of error codes to add to the list " "of selected ones. For example, ``--extend-select=E4,E51,W234``." ), ) add_option( "--disable-noqa", default=False, parse_from_config=True, action="store_true", help='Disable the effect of "# noqa". This will report errors on ' 'lines with "# noqa" at the end.', ) # TODO(sigmavirus24): Decide what to do about --show-pep8 add_option( "--show-source", action="store_true", parse_from_config=True, help="Show the source generate each error or warning.", ) add_option( "--no-show-source", action="store_false", dest="show_source", parse_from_config=False, help="Negate --show-source", ) add_option( "--statistics", action="store_true", parse_from_config=True, help="Count errors.", ) # Flake8 options add_option( "--exit-zero", action="store_true", help='Exit with status code "0" even if there are errors.', ) add_option( "-j", "--jobs", default="auto", parse_from_config=True, type=JobsArgument, help="Number of subprocesses to use to run checks in parallel. " 'This is ignored on Windows. The default, "auto", will ' "auto-detect the number of processors available to use. " "(Default: %(default)s)", ) add_option( "--tee", default=False, parse_from_config=True, action="store_true", help="Write to stdout and output-file.", ) # Benchmarking add_option( "--benchmark", default=False, action="store_true", help="Print benchmark information about this run of Flake8", ) # Debugging add_option( "--bug-report", action="store_true", help="Print information necessary when preparing a bug report", )