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"""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",
)
........