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python3-pathspec
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v1.1.0
pathspec/pathspec.py
508 строк
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Caleb Burns
Specialize patterns
22 мар 2026, 23:27
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22 мар 2026, 23:27
3d044f4
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""" This module provides :class:`.PathSpec` which is an object-oriented interface for pattern matching of files. """ from __future__ import annotations from collections.abc import ( Collection, Iterable, Iterator, Sequence) from itertools import ( zip_longest) from typing import ( Callable, # Replaced by `collections.abc.Callable` in 3.9.2. Generic, Literal, Optional, # Replaced by `X | None` in 3.10. TypeVar, Union, # Replaced by `X | Y` in 3.10. cast, overload) Self = TypeVar("Self", bound='PathSpec') """ :class:`.PathSpec` self type hint to support Python v<3.11 using PEP 673 recommendation. """ from pathspec import util from pathspec.backend import ( _Backend, BackendNamesHint) from pathspec._backends.agg import ( make_pathspec_backend) from pathspec.pattern import ( Pattern) from pathspec.patterns.gitignore.basic import ( GitIgnoreBasicPattern) from pathspec._typing import ( AnyStr, # Removed in 3.18. deprecated) # Added in 3.13. from pathspec.util import ( CheckResult, StrPath, TPattern, TStrPath, TreeEntry, _is_iterable, normalize_file) class PathSpec(Generic[TPattern]): """ The :class:`PathSpec` class is a wrapper around a list of compiled :class:`.Pattern` instances. """ def __init__( self, patterns: Union[Sequence[TPattern], Iterable[TPattern]], *, backend: Union[BackendNamesHint, str, None] = None, _test_backend_factory: Optional[Callable[[Sequence[TPattern]], _Backend]] = None, ) -> None: """ Initializes the :class:`.PathSpec` instance. *patterns* (:class:`~collections.abc.Sequence` or :class:`~collections.abc.Iterable`) contains each compiled pattern (:class:`.Pattern`). If not a sequence, it will be converted to a :class:`list`. *backend* (:class:`str` or :data:`None`) is the pattern (regular expression) matching backend to use. Default is :data:`None` for "best" to use the best available backend. Priority of backends is: "re2", "hyperscan", "simple". The "simple" backend is always available. """ if not isinstance(patterns, Sequence): patterns = list(patterns) if backend is None: backend = 'best' backend = cast(BackendNamesHint, backend) if _test_backend_factory is not None: use_backend = _test_backend_factory(patterns) else: use_backend = self._make_backend(backend, patterns) self._backend: _Backend = use_backend """ *_backend* (:class:`._Backend`) is the pattern (regular expression) matching backend. """ self._backend_name: BackendNamesHint = backend """ *_backend_name* (:class:`str`) is the name of backend to use. """ self.patterns: Sequence[TPattern] = patterns """ *patterns* (:class:`~collections.abc.Sequence` of :class:`.Pattern`) contains the compiled patterns. """ def __repr__(self) -> str: """ Returns a debug representation of this path-spec. """ return f"{self.__class__.__name__}(patterns={self.patterns!r}, backend={self._backend_name!r})" def __add__(self: Self, other: PathSpec) -> Self: """ Combines the :attr:`self.patterns <.PathSpec.patterns>` patterns from two :class:`PathSpec` instances. """ if isinstance(other, PathSpec): return self.__class__(self.patterns + other.patterns, backend=self._backend_name) else: return NotImplemented def __eq__(self, other: object) -> bool: """ Tests the equality of this path-spec with *other* (:class:`PathSpec`) by comparing their :attr:`self.patterns <.PathSpec.patterns>` attributes. """ if isinstance(other, PathSpec): paired_patterns = zip_longest(self.patterns, other.patterns) return all(a == b for a, b in paired_patterns) else: return NotImplemented def __iadd__(self: Self, other: PathSpec) -> Self: """ Adds the :attr:`self.patterns <.PathSpec.patterns>` from *other* (:class:`PathSpec`) to this instance. """ if isinstance(other, PathSpec): self.patterns += other.patterns self._backend = self._make_backend(self._backend_name, self.patterns) return self else: return NotImplemented def __len__(self) -> int: """ Returns the number of :attr:`self.patterns <.PathSpec.patterns>` this path-spec contains (:class:`int`). """ return len(self.patterns) def check_file( self, file: TStrPath, separators: Optional[Collection[str]] = None, ) -> CheckResult[TStrPath]: """ Check the files against this path-spec. *file* (:class:`str` or :class:`os.PathLike`) is the file path to be matched against :attr:`self.patterns <.PathSpec.patterns>`. *separators* (:class:`~collections.abc.Collection` of :class:`str`; or :data:`None`) optionally contains the path separators to normalize. See :func:`.normalize_file` for more information. Returns the file check result (:class:`.CheckResult`). """ norm_file = normalize_file(file, separators) include, index = self._backend.match_file(norm_file) return CheckResult(file, include, index) def check_files( self, files: Iterable[TStrPath], separators: Optional[Collection[str]] = None, ) -> Iterator[CheckResult[TStrPath]]: """ Check the files against this path-spec. *files* (:class:`~collections.abc.Iterable` of :class:`str` or :class:`os.PathLike`) contains the file paths to be checked against :attr:`self.patterns <.PathSpec.patterns>`. *separators* (:class:`~collections.abc.Collection` of :class:`str`; or :data:`None`) optionally contains the path separators to normalize. See :func:`.normalize_file` for more information. Returns an :class:`~collections.abc.Iterator` yielding each file check result (:class:`.CheckResult`). """ if not _is_iterable(files): raise TypeError(f"files:{files!r} is not an iterable.") for orig_file in files: norm_file = normalize_file(orig_file, separators) include, index = self._backend.match_file(norm_file) yield CheckResult(orig_file, include, index) def check_tree_files( self, root: StrPath, on_error: Optional[Callable[[OSError], None]] = None, follow_links: Optional[bool] = None, ) -> Iterator[CheckResult[str]]: """ Walks the specified root path for all files and checks them against this path-spec. *root* (:class:`str` or :class:`os.PathLike`) is the root directory to search for files. *on_error* (:class:`~collections.abc.Callable` or :data:`None`) optionally is the error handler for file-system exceptions. It will be called with the exception (:exc:`OSError`). Reraise the exception to abort the walk. Default is :data:`None` to ignore file-system exceptions. *follow_links* (:class:`bool` or :data:`None`) optionally is whether to walk symbolic links that resolve to directories. Default is :data:`None` for :data:`True`. *negate* (:class:`bool` or :data:`None`) is whether to negate the match results of the patterns. If :data:`True`, a pattern matching a file will exclude the file rather than include it. Default is :data:`None` for :data:`False`. Returns an :class:`~collections.abc.Iterator` yielding each file check result (:class:`.CheckResult`). """ files = util.iter_tree_files(root, on_error=on_error, follow_links=follow_links) yield from self.check_files(files) @overload @classmethod def from_lines( cls: type[PathSpec], pattern_factory: Literal['gitignore'], lines: Iterable[AnyStr], *, backend: Union[BackendNamesHint, str, None] = None, _test_backend_factory: Optional[Callable[[Sequence[Pattern]], _Backend]] = None, ) -> PathSpec[GitIgnoreBasicPattern]: ... @overload @classmethod def from_lines( cls: type[PathSpec], pattern_factory: Callable[[AnyStr], TPattern], lines: Iterable[AnyStr], *, backend: Union[BackendNamesHint, str, None] = None, _test_backend_factory: Optional[Callable[[Sequence[TPattern]], _Backend]] = None, ) -> PathSpec[TPattern]: ... @overload @classmethod def from_lines( cls: type[PathSpec], pattern_factory: Union[str, Callable[[AnyStr], Pattern]], lines: Iterable[AnyStr], *, backend: Union[BackendNamesHint, str, None] = None, _test_backend_factory: Optional[Callable[[Sequence[Pattern]], _Backend]] = None, ) -> PathSpec[Pattern]: ... @classmethod def from_lines( cls: type[Self], pattern_factory: Union[str, Callable[[AnyStr], Pattern]], lines: Iterable[AnyStr], *, backend: Union[BackendNamesHint, str, None] = None, _test_backend_factory: Optional[Callable[[Sequence[Pattern]], _Backend]] = None, ) -> Self: """ Compiles the pattern lines. *pattern_factory* can be either the name of a registered pattern factory (:class:`str`), or a :class:`~collections.abc.Callable` used to compile patterns. It must accept an uncompiled pattern (:class:`str`) and return the compiled pattern (:class:`.Pattern`). *lines* (:class:`~collections.abc.Iterable`) yields each uncompiled pattern (:class:`str`). This simply has to yield each line so that it can be a :class:`io.TextIOBase` (e.g., from :func:`open` or :class:`io.StringIO`) or the result from :meth:`str.splitlines`. *backend* (:class:`str` or :data:`None`) is the pattern (or regular expression) matching backend to use. Default is :data:`None` for "best" to use the best available backend. Priority of backends is: "re2", "hyperscan", "simple". The "simple" backend is always available. Returns the :class:`PathSpec` instance. """ if isinstance(pattern_factory, str): pattern_factory = util.lookup_pattern(pattern_factory) if not callable(pattern_factory): raise TypeError(f"pattern_factory:{pattern_factory!r} is not callable.") if not _is_iterable(lines): raise TypeError(f"lines:{lines!r} is not an iterable.") patterns = [pattern_factory(line) for line in lines if line] return cls(patterns, backend=backend, _test_backend_factory=_test_backend_factory) @staticmethod def _make_backend( name: BackendNamesHint, patterns: Sequence[Pattern], ) -> _Backend: """ .. warning:: This method is not part of the public API. It is subject to change. Create the backend for the patterns. *name* (:class:`str`) is the name of the backend. *patterns* (:class:`~collections.abc.Sequence` of :class:`.Pattern`) contains the compiled patterns. Returns the matcher (:class:`._Backend`). """ return make_pathspec_backend(name, patterns) def match_entries( self, entries: Iterable[TreeEntry], separators: Optional[Collection[str]] = None, *, negate: Optional[bool] = None, ) -> Iterator[TreeEntry]: """ Matches the entries to this path-spec. *entries* (:class:`~collections.abc.Iterable` of :class:`.TreeEntry`) contains the entries to be matched against :attr:`self.patterns <.PathSpec.patterns>`. *separators* (:class:`~collections.abc.Collection` of :class:`str`; or :data:`None`) optionally contains the path separators to normalize. See :func:`.normalize_file` for more information. *negate* (:class:`bool` or :data:`None`) is whether to negate the match results of the patterns. If :data:`True`, a pattern matching a file will exclude the file rather than include it. Default is :data:`None` for :data:`False`. Returns the matched entries (:class:`~collections.abc.Iterator` of :class:`.TreeEntry`). """ if not _is_iterable(entries): raise TypeError(f"entries:{entries!r} is not an iterable.") for entry in entries: norm_file = normalize_file(entry.path, separators) include, _index = self._backend.match_file(norm_file) if negate: include = not include if include: yield entry def match_file( self, file: StrPath, separators: Optional[Collection[str]] = None, ) -> bool: """ Matches the file to this path-spec. *file* (:class:`str` or :class:`os.PathLike`) is the file path to be matched against :attr:`self.patterns <.PathSpec.patterns>`. *separators* (:class:`~collections.abc.Collection` of :class:`str`) optionally contains the path separators to normalize. See :func:`.normalize_file` for more information. Returns :data:`True` if *file* matched; otherwise, :data:`False`. """ norm_file = normalize_file(file, separators) include, _index = self._backend.match_file(norm_file) return bool(include) def match_files( self, files: Iterable[StrPath], separators: Optional[Collection[str]] = None, *, negate: Optional[bool] = None, ) -> Iterator[StrPath]: """ Matches the files to this path-spec. *files* (:class:`~collections.abc.Iterable` of :class:`str` or :class:`os.PathLike`) contains the file paths to be matched against :attr:`self.patterns <.PathSpec.patterns>`. *separators* (:class:`~collections.abc.Collection` of :class:`str`; or :data:`None`) optionally contains the path separators to normalize. See :func:`.normalize_file` for more information. *negate* (:class:`bool` or :data:`None`) is whether to negate the match results of the patterns. If :data:`True`, a pattern matching a file will exclude the file rather than include it. Default is :data:`None` for :data:`False`. Returns the matched files (:class:`~collections.abc.Iterator` of :class:`str` or :class:`os.PathLike`). """ if not _is_iterable(files): raise TypeError(f"files:{files!r} is not an iterable.") for orig_file in files: norm_file = normalize_file(orig_file, separators) include, _index = self._backend.match_file(norm_file) if negate: include = not include if include: yield orig_file def match_tree_entries( self, root: StrPath, on_error: Optional[Callable[[OSError], None]] = None, follow_links: Optional[bool] = None, *, negate: Optional[bool] = None, ) -> Iterator[TreeEntry]: """ Walks the specified root path for all files and matches them to this path-spec. *root* (:class:`str` or :class:`os.PathLike`) is the root directory to search. *on_error* (:class:`~collections.abc.Callable` or :data:`None`) optionally is the error handler for file-system exceptions. It will be called with the exception (:exc:`OSError`). Reraise the exception to abort the walk. Default is :data:`None` to ignore file-system exceptions. *follow_links* (:class:`bool` or :data:`None`) optionally is whether to walk symbolic links that resolve to directories. Default is :data:`None` for :data:`True`. *negate* (:class:`bool` or :data:`None`) is whether to negate the match results of the patterns. If :data:`True`, a pattern matching a file will exclude the file rather than include it. Default is :data:`None` for :data:`False`. Returns the matched files (:class:`~collections.abc.Iterator` of :class:`.TreeEntry`). """ entries = util.iter_tree_entries(root, on_error=on_error, follow_links=follow_links) yield from self.match_entries(entries, negate=negate) # NOTICE: The deprecation warning was only added in 1.0.0 (from 2026-01-05). @deprecated(( "PathSpec.match_tree() is deprecated. Use .match_tree_files() instead." )) def match_tree(self, *args, **kw) -> Iterator[str]: """ .. version-deprecated:: 0.3.2 This is an alias for the :meth:`self.match_tree_files <.PathSpec.match_tree_files>` method. """ return self.match_tree_files(*args, **kw) def match_tree_files( self, root: StrPath, on_error: Optional[Callable[[OSError], None]] = None, follow_links: Optional[bool] = None, *, negate: Optional[bool] = None, ) -> Iterator[str]: """ Walks the specified root path for all files and matches them to this path-spec. *root* (:class:`str` or :class:`os.PathLike`) is the root directory to search for files. *on_error* (:class:`~collections.abc.Callable` or :data:`None`) optionally is the error handler for file-system exceptions. It will be called with the exception (:exc:`OSError`). Reraise the exception to abort the walk. Default is :data:`None` to ignore file-system exceptions. *follow_links* (:class:`bool` or :data:`None`) optionally is whether to walk symbolic links that resolve to directories. Default is :data:`None` for :data:`True`. *negate* (:class:`bool` or :data:`None`) is whether to negate the match results of the patterns. If :data:`True`, a pattern matching a file will exclude the file rather than include it. Default is :data:`None` for :data:`False`. Returns the matched files (:class:`~collections.abc.Iterable` of :class:`str`). """ files = util.iter_tree_files(root, on_error=on_error, follow_links=follow_links) yield from self.match_files(files, negate=negate)