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"""Utilities for loading various files."""
from __future__ import annotations
import logging
import os
from collections import defaultdict, namedtuple
from functools import partial
from typing import TYPE_CHECKING, Any
import yaml
from yaml import YAMLError
try:
from yaml import CFullLoader as FullLoader
from yaml import CSafeLoader as SafeLoader
except (ImportError, AttributeError):
from yaml import FullLoader, SafeLoader # type: ignore[assignment]
if TYPE_CHECKING:
from pathlib import Path
IgnoreFile = namedtuple("IgnoreFile", "default alternative")
IGNORE_FILE = IgnoreFile(".ansible-lint-ignore", ".config/ansible-lint-ignore.txt")
yaml_load = partial(yaml.load, Loader=FullLoader)
yaml_load_safe = partial(yaml.load, Loader=SafeLoader)
_logger = logging.getLogger(__name__)
def yaml_from_file(filepath: str | Path) -> Any:
"""Return a loaded YAML file."""
with open(str(filepath), encoding="utf-8") as content:
return yaml_load(content)
def load_ignore_txt(filepath: Path | None = None) -> dict[str, set[str]]:
"""Return a list of rules to ignore."""
result = defaultdict(set)
ignore_file = None
if filepath:
if os.path.isfile(filepath):
ignore_file = str(filepath)
else:
_logger.error("Ignore file not found '%s'", ignore_file)
elif os.path.isfile(IGNORE_FILE.default):
ignore_file = IGNORE_FILE.default
elif os.path.isfile(IGNORE_FILE.alternative):
ignore_file = IGNORE_FILE.alternative
if ignore_file:
with open(ignore_file, encoding="utf-8") as _ignore_file:
_logger.debug("Loading ignores from '%s'", ignore_file)
for line in _ignore_file:
entry = line.split("#")[0].rstrip()
if entry:
try:
path, rule = entry.split()
except ValueError as exc:
msg = f"Unable to parse line '{line}' from {ignore_file} file."
raise RuntimeError(msg) from exc
result[path].add(rule)
return result
__all__ = [
"load_ignore_txt",
"yaml_from_file",
"yaml_load",
"yaml_load_safe",
"YAMLError",
"IGNORE_FILE",
]
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