X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/75d5c0e3fbf5de67b995c80e12229b7525ff6bb9..0b4d7d55f78913be9e0a3738681ef3aafd5d9a5a:/src/black/files.py diff --git a/src/black/files.py b/src/black/files.py index ed503f5..4e2209e 100644 --- a/src/black/files.py +++ b/src/black/files.py @@ -18,6 +18,8 @@ from typing import ( ) from mypy_extensions import mypyc_attr +from packaging.specifiers import InvalidSpecifier, Specifier, SpecifierSet +from packaging.version import InvalidVersion, Version from pathspec import PathSpec from pathspec.patterns.gitwildmatch import GitWildMatchPatternError @@ -32,6 +34,7 @@ else: import tomli as tomllib from black.handle_ipynb_magics import jupyter_dependencies_are_installed +from black.mode import TargetVersion from black.output import err from black.report import Report @@ -39,7 +42,7 @@ if TYPE_CHECKING: import colorama # noqa: F401 -@lru_cache() +@lru_cache def find_project_root( srcs: Sequence[str], stdin_filename: Optional[str] = None ) -> Tuple[Path, str]: @@ -86,9 +89,11 @@ def find_project_root( return directory, "file system root" -def find_pyproject_toml(path_search_start: Tuple[str, ...]) -> Optional[str]: +def find_pyproject_toml( + path_search_start: Tuple[str, ...], stdin_filename: Optional[str] = None +) -> Optional[str]: """Find the absolute filepath to a pyproject.toml if it exists""" - path_project_root, _ = find_project_root(path_search_start) + path_project_root, _ = find_project_root(path_search_start, stdin_filename) path_pyproject_toml = path_project_root / "pyproject.toml" if path_pyproject_toml.is_file(): return str(path_pyproject_toml) @@ -108,17 +113,106 @@ def find_pyproject_toml(path_search_start: Tuple[str, ...]) -> Optional[str]: @mypyc_attr(patchable=True) def parse_pyproject_toml(path_config: str) -> Dict[str, Any]: - """Parse a pyproject toml file, pulling out relevant parts for Black + """Parse a pyproject toml file, pulling out relevant parts for Black. - If parsing fails, will raise a tomllib.TOMLDecodeError + If parsing fails, will raise a tomllib.TOMLDecodeError. """ with open(path_config, "rb") as f: pyproject_toml = tomllib.load(f) - config = pyproject_toml.get("tool", {}).get("black", {}) - return {k.replace("--", "").replace("-", "_"): v for k, v in config.items()} + config: Dict[str, Any] = pyproject_toml.get("tool", {}).get("black", {}) + config = {k.replace("--", "").replace("-", "_"): v for k, v in config.items()} + + if "target_version" not in config: + inferred_target_version = infer_target_version(pyproject_toml) + if inferred_target_version is not None: + config["target_version"] = [v.name.lower() for v in inferred_target_version] + + return config + + +def infer_target_version( + pyproject_toml: Dict[str, Any] +) -> Optional[List[TargetVersion]]: + """Infer Black's target version from the project metadata in pyproject.toml. + + Supports the PyPA standard format (PEP 621): + https://packaging.python.org/en/latest/specifications/declaring-project-metadata/#requires-python + + If the target version cannot be inferred, returns None. + """ + project_metadata = pyproject_toml.get("project", {}) + requires_python = project_metadata.get("requires-python", None) + if requires_python is not None: + try: + return parse_req_python_version(requires_python) + except InvalidVersion: + pass + try: + return parse_req_python_specifier(requires_python) + except (InvalidSpecifier, InvalidVersion): + pass + + return None + + +def parse_req_python_version(requires_python: str) -> Optional[List[TargetVersion]]: + """Parse a version string (i.e. ``"3.7"``) to a list of TargetVersion. + + If parsing fails, will raise a packaging.version.InvalidVersion error. + If the parsed version cannot be mapped to a valid TargetVersion, returns None. + """ + version = Version(requires_python) + if version.release[0] != 3: + return None + try: + return [TargetVersion(version.release[1])] + except (IndexError, ValueError): + return None + + +def parse_req_python_specifier(requires_python: str) -> Optional[List[TargetVersion]]: + """Parse a specifier string (i.e. ``">=3.7,<3.10"``) to a list of TargetVersion. + + If parsing fails, will raise a packaging.specifiers.InvalidSpecifier error. + If the parsed specifier cannot be mapped to a valid TargetVersion, returns None. + """ + specifier_set = strip_specifier_set(SpecifierSet(requires_python)) + if not specifier_set: + return None + target_version_map = {f"3.{v.value}": v for v in TargetVersion} + compatible_versions: List[str] = list(specifier_set.filter(target_version_map)) + if compatible_versions: + return [target_version_map[v] for v in compatible_versions] + return None -@lru_cache() + +def strip_specifier_set(specifier_set: SpecifierSet) -> SpecifierSet: + """Strip minor versions for some specifiers in the specifier set. + + For background on version specifiers, see PEP 440: + https://peps.python.org/pep-0440/#version-specifiers + """ + specifiers = [] + for s in specifier_set: + if "*" in str(s): + specifiers.append(s) + elif s.operator in ["~=", "==", ">=", "==="]: + version = Version(s.version) + stripped = Specifier(f"{s.operator}{version.major}.{version.minor}") + specifiers.append(stripped) + elif s.operator == ">": + version = Version(s.version) + if len(version.release) > 2: + s = Specifier(f">={version.major}.{version.minor}") + specifiers.append(s) + else: + specifiers.append(s) + + return SpecifierSet(",".join(str(s) for s in specifiers)) + + +@lru_cache def find_user_pyproject_toml() -> Path: r"""Return the path to the top-level user configuration for black. @@ -138,7 +232,7 @@ def find_user_pyproject_toml() -> Path: return user_config_path.resolve() -@lru_cache() +@lru_cache def get_gitignore(root: Path) -> PathSpec: """Return a PathSpec matching gitignore content if present.""" gitignore = root / ".gitignore" @@ -182,6 +276,19 @@ def normalize_path_maybe_ignore( return root_relative_path +def path_is_ignored( + path: Path, gitignore_dict: Dict[Path, PathSpec], report: Report +) -> bool: + for gitignore_path, pattern in gitignore_dict.items(): + relative_path = normalize_path_maybe_ignore(path, gitignore_path, report) + if relative_path is None: + break + if pattern.match_file(relative_path): + report.path_ignored(path, "matches a .gitignore file content") + return True + return False + + def path_is_excluded( normalized_path: str, pattern: Optional[Pattern[str]], @@ -198,7 +305,7 @@ def gen_python_files( extend_exclude: Optional[Pattern[str]], force_exclude: Optional[Pattern[str]], report: Report, - gitignore: Optional[PathSpec], + gitignore_dict: Optional[Dict[Path, PathSpec]], *, verbose: bool, quiet: bool, @@ -211,6 +318,7 @@ def gen_python_files( `report` is where output about exclusions goes. """ + assert root.is_absolute(), f"INTERNAL ERROR: `root` must be absolute but is {root}" for child in paths: normalized_path = normalize_path_maybe_ignore(child, root, report) @@ -218,8 +326,7 @@ def gen_python_files( continue # First ignore files matching .gitignore, if passed - if gitignore is not None and gitignore.match_file(normalized_path): - report.path_ignored(child, "matches the .gitignore file content") + if gitignore_dict and path_is_ignored(child, gitignore_dict, report): continue # Then ignore with `--exclude` `--extend-exclude` and `--force-exclude` options. @@ -244,6 +351,13 @@ def gen_python_files( if child.is_dir(): # If gitignore is None, gitignore usage is disabled, while a Falsey # gitignore is when the directory doesn't have a .gitignore file. + if gitignore_dict is not None: + new_gitignore_dict = { + **gitignore_dict, + root / child: get_gitignore(child), + } + else: + new_gitignore_dict = None yield from gen_python_files( child.iterdir(), root, @@ -252,7 +366,7 @@ def gen_python_files( extend_exclude, force_exclude, report, - gitignore + get_gitignore(child) if gitignore is not None else None, + new_gitignore_dict, verbose=verbose, quiet=quiet, )