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from __future__ import annotations
import functools
import logging
import re
import shlex
import sys
from typing import Any
from typing import Sequence
import cfgv
from identify.identify import ALL_TAGS
import pre_commit.constants as C
from pre_commit.errors import FatalError
from pre_commit.languages.all import all_languages
from pre_commit.yaml import yaml_load
logger = logging.getLogger('pre_commit')
check_string_regex = cfgv.check_and(cfgv.check_string, cfgv.check_regex)
def check_type_tag(tag: str) -> None:
if tag not in ALL_TAGS:
raise cfgv.ValidationError(
f'Type tag {tag!r} is not recognized. '
f'Try upgrading identify and pre-commit?',
)
def parse_version(s: str) -> tuple[int, ...]:
"""poor man's version comparison"""
return tuple(int(p) for p in s.split('.'))
def check_min_version(version: str) -> None:
if parse_version(version) > parse_version(C.VERSION):
raise cfgv.ValidationError(
f'pre-commit version {version} is required but version '
f'{C.VERSION} is installed. '
f'Perhaps run `pip install --upgrade pre-commit`.',
)
MANIFEST_HOOK_DICT = cfgv.Map(
'Hook', 'id',
cfgv.Required('id', cfgv.check_string),
cfgv.Required('name', cfgv.check_string),
cfgv.Required('entry', cfgv.check_string),
cfgv.Required('language', cfgv.check_one_of(all_languages)),
cfgv.Optional('alias', cfgv.check_string, ''),
cfgv.Optional('files', check_string_regex, ''),
cfgv.Optional('exclude', check_string_regex, '^$'),
cfgv.Optional('types', cfgv.check_array(check_type_tag), ['file']),
cfgv.Optional('types_or', cfgv.check_array(check_type_tag), []),
cfgv.Optional('exclude_types', cfgv.check_array(check_type_tag), []),
cfgv.Optional(
'additional_dependencies', cfgv.check_array(cfgv.check_string), [],
),
cfgv.Optional('args', cfgv.check_array(cfgv.check_string), []),
cfgv.Optional('always_run', cfgv.check_bool, False),
cfgv.Optional('fail_fast', cfgv.check_bool, False),
cfgv.Optional('pass_filenames', cfgv.check_bool, True),
cfgv.Optional('description', cfgv.check_string, ''),
cfgv.Optional('language_version', cfgv.check_string, C.DEFAULT),
cfgv.Optional('log_file', cfgv.check_string, ''),
cfgv.Optional('minimum_pre_commit_version', cfgv.check_string, '0'),
cfgv.Optional('require_serial', cfgv.check_bool, False),
cfgv.Optional('stages', cfgv.check_array(cfgv.check_one_of(C.STAGES)), []),
cfgv.Optional('verbose', cfgv.check_bool, False),
)
MANIFEST_SCHEMA = cfgv.Array(MANIFEST_HOOK_DICT)
class InvalidManifestError(FatalError):
pass
load_manifest = functools.partial(
cfgv.load_from_filename,
schema=MANIFEST_SCHEMA,
load_strategy=yaml_load,
exc_tp=InvalidManifestError,
)
LOCAL = 'local'
META = 'meta'
class WarnMutableRev(cfgv.Conditional):
def check(self, dct: dict[str, Any]) -> None:
super().check(dct)
if self.key in dct:
rev = dct[self.key]
if '.' not in rev and not re.match(r'^[a-fA-F0-9]+$', rev):
logger.warning(
f'The {self.key!r} field of repo {dct["repo"]!r} '
f'appears to be a mutable reference '
f'(moving tag / branch). Mutable references are never '
f'updated after first install and are not supported. '
f'See https://pre-commit.com/#using-the-latest-version-for-a-repository ' # noqa: E501
f'for more details. '
f'Hint: `pre-commit autoupdate` often fixes this.',
)
class OptionalSensibleRegexAtHook(cfgv.OptionalNoDefault):
def check(self, dct: dict[str, Any]) -> None:
super().check(dct)
if '/*' in dct.get(self.key, ''):
logger.warning(
f'The {self.key!r} field in hook {dct.get("id")!r} is a '
f"regex, not a glob -- matching '/*' probably isn't what you "
f'want here',
)
for fwd_slash_re in (r'[\\/]', r'[\/]', r'[/\\]'):
if fwd_slash_re in dct.get(self.key, ''):
logger.warning(
fr'pre-commit normalizes slashes in the {self.key!r} '
fr'field in hook {dct.get("id")!r} to forward slashes, '
fr'so you can use / instead of {fwd_slash_re}',
)
class OptionalSensibleRegexAtTop(cfgv.OptionalNoDefault):
def check(self, dct: dict[str, Any]) -> None:
super().check(dct)
if '/*' in dct.get(self.key, ''):
logger.warning(
f'The top-level {self.key!r} field is a regex, not a glob -- '
f"matching '/*' probably isn't what you want here",
)
for fwd_slash_re in (r'[\\/]', r'[\/]', r'[/\\]'):
if fwd_slash_re in dct.get(self.key, ''):
logger.warning(
fr'pre-commit normalizes the slashes in the top-level '
fr'{self.key!r} field to forward slashes, so you '
fr'can use / instead of {fwd_slash_re}',
)
def _entry(modname: str) -> str:
"""the hook `entry` is passed through `shlex.split()` by the command
runner, so to prevent issues with spaces and backslashes (on Windows)
it must be quoted here.
"""
return f'{shlex.quote(sys.executable)} -m pre_commit.meta_hooks.{modname}'
def warn_unknown_keys_root(
extra: Sequence[str],
orig_keys: Sequence[str],
dct: dict[str, str],
) -> None:
logger.warning(f'Unexpected key(s) present at root: {", ".join(extra)}')
def warn_unknown_keys_repo(
extra: Sequence[str],
orig_keys: Sequence[str],
dct: dict[str, str],
) -> None:
logger.warning(
f'Unexpected key(s) present on {dct["repo"]}: {", ".join(extra)}',
)
_meta = (
(
'check-hooks-apply', (
('name', 'Check hooks apply to the repository'),
('files', f'^{re.escape(C.CONFIG_FILE)}$'),
('entry', _entry('check_hooks_apply')),
),
),
(
'check-useless-excludes', (
('name', 'Check for useless excludes'),
('files', f'^{re.escape(C.CONFIG_FILE)}$'),
('entry', _entry('check_useless_excludes')),
),
),
(
'identity', (
('name', 'identity'),
('verbose', True),
('entry', _entry('identity')),
),
),
)
class NotAllowed(cfgv.OptionalNoDefault):
def check(self, dct: dict[str, Any]) -> None:
if self.key in dct:
raise cfgv.ValidationError(f'{self.key!r} cannot be overridden')
META_HOOK_DICT = cfgv.Map(
'Hook', 'id',
cfgv.Required('id', cfgv.check_string),
cfgv.Required('id', cfgv.check_one_of(tuple(k for k, _ in _meta))),
# language must be system
cfgv.Optional('language', cfgv.check_one_of({'system'}), 'system'),
# entry cannot be overridden
NotAllowed('entry', cfgv.check_any),
*(
# default to the hook definition for the meta hooks
cfgv.ConditionalOptional(key, cfgv.check_any, value, 'id', hook_id)
for hook_id, values in _meta
for key, value in values
),
*(
# default to the "manifest" parsing
cfgv.OptionalNoDefault(item.key, item.check_fn)
# these will always be defaulted above
if item.key in {'name', 'language', 'entry'} else
item
for item in MANIFEST_HOOK_DICT.items
),
)
CONFIG_HOOK_DICT = cfgv.Map(
'Hook', 'id',
cfgv.Required('id', cfgv.check_string),
# All keys in manifest hook dict are valid in a config hook dict, but
# are optional.
# No defaults are provided here as the config is merged on top of the
# manifest.
*(
cfgv.OptionalNoDefault(item.key, item.check_fn)
for item in MANIFEST_HOOK_DICT.items
if item.key != 'id'
),
OptionalSensibleRegexAtHook('files', cfgv.check_string),
OptionalSensibleRegexAtHook('exclude', cfgv.check_string),
)
LOCAL_HOOK_DICT = cfgv.Map(
'Hook', 'id',
*MANIFEST_HOOK_DICT.items,
OptionalSensibleRegexAtHook('files', cfgv.check_string),
OptionalSensibleRegexAtHook('exclude', cfgv.check_string),
)
CONFIG_REPO_DICT = cfgv.Map(
'Repository', 'repo',
cfgv.Required('repo', cfgv.check_string),
cfgv.ConditionalRecurse(
'hooks', cfgv.Array(CONFIG_HOOK_DICT),
'repo', cfgv.NotIn(LOCAL, META),
),
cfgv.ConditionalRecurse(
'hooks', cfgv.Array(LOCAL_HOOK_DICT),
'repo', LOCAL,
),
cfgv.ConditionalRecurse(
'hooks', cfgv.Array(META_HOOK_DICT),
'repo', META,
),
WarnMutableRev(
'rev', cfgv.check_string,
condition_key='repo',
condition_value=cfgv.NotIn(LOCAL, META),
ensure_absent=True,
),
cfgv.WarnAdditionalKeys(('repo', 'rev', 'hooks'), warn_unknown_keys_repo),
)
DEFAULT_LANGUAGE_VERSION = cfgv.Map(
'DefaultLanguageVersion', None,
cfgv.NoAdditionalKeys(all_languages),
*(cfgv.Optional(x, cfgv.check_string, C.DEFAULT) for x in all_languages),
)
CONFIG_SCHEMA = cfgv.Map(
'Config', None,
cfgv.RequiredRecurse('repos', cfgv.Array(CONFIG_REPO_DICT)),
cfgv.Optional(
'default_install_hook_types',
cfgv.check_array(cfgv.check_one_of(C.HOOK_TYPES)),
['pre-commit'],
),
cfgv.OptionalRecurse(
'default_language_version', DEFAULT_LANGUAGE_VERSION, {},
),
cfgv.Optional(
'default_stages',
cfgv.check_array(cfgv.check_one_of(C.STAGES)),
C.STAGES,
),
cfgv.Optional('files', check_string_regex, ''),
cfgv.Optional('exclude', check_string_regex, '^$'),
cfgv.Optional('fail_fast', cfgv.check_bool, False),
cfgv.Optional(
'minimum_pre_commit_version',
cfgv.check_and(cfgv.check_string, check_min_version),
'0',
),
cfgv.WarnAdditionalKeys(
(
'repos',
'default_install_hook_types',
'default_language_version',
'default_stages',
'files',
'exclude',
'fail_fast',
'minimum_pre_commit_version',
'ci',
),
warn_unknown_keys_root,
),
OptionalSensibleRegexAtTop('files', cfgv.check_string),
OptionalSensibleRegexAtTop('exclude', cfgv.check_string),
# do not warn about configuration for pre-commit.ci
cfgv.OptionalNoDefault('ci', cfgv.check_type(dict)),
)
class InvalidConfigError(FatalError):
pass
load_config = functools.partial(
cfgv.load_from_filename,
schema=CONFIG_SCHEMA,
load_strategy=yaml_load,
exc_tp=InvalidConfigError,
)
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