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beb80d11ec
Apply pathlib's normalization and performance tuning in `pathlib.PurePath`, but not `pathlib._abc.PurePathBase`. With this change, the pathlib ABCs do not normalize away alternate path separators, empty segments, or dot segments. A single string given to the initialiser will round-trip by default, i.e. `str(PurePathBase(my_string)) == my_string`. Implementors can set their own path domain-specific normalization scheme by overriding `__str__()` Eliminating path normalization makes maintaining and caching the path's parts and string representation both optional and not very useful, so this commit moves the `_drv`, `_root`, `_tail_cached` and `_str` slots from `PurePathBase` to `PurePath`. Only `_raw_paths` and `_resolving` slots remain in `PurePathBase`. This frees the ABCs from the burden of some of pathlib's hardest-to-understand code.
816 lines
29 KiB
Python
816 lines
29 KiB
Python
"""Object-oriented filesystem paths.
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This module provides classes to represent abstract paths and concrete
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paths with operations that have semantics appropriate for different
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operating systems.
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"""
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import io
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import ntpath
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import os
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import posixpath
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import sys
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import warnings
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from itertools import chain
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from _collections_abc import Sequence
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try:
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import pwd
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except ImportError:
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pwd = None
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try:
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import grp
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except ImportError:
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grp = None
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from . import _abc
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__all__ = [
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"UnsupportedOperation",
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"PurePath", "PurePosixPath", "PureWindowsPath",
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"Path", "PosixPath", "WindowsPath",
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]
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class _PathParents(Sequence):
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"""This object provides sequence-like access to the logical ancestors
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of a path. Don't try to construct it yourself."""
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__slots__ = ('_path', '_drv', '_root', '_tail')
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def __init__(self, path):
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self._path = path
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self._drv = path.drive
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self._root = path.root
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self._tail = path._tail
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def __len__(self):
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return len(self._tail)
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def __getitem__(self, idx):
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if isinstance(idx, slice):
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return tuple(self[i] for i in range(*idx.indices(len(self))))
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if idx >= len(self) or idx < -len(self):
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raise IndexError(idx)
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if idx < 0:
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idx += len(self)
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return self._path._from_parsed_parts(self._drv, self._root,
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self._tail[:-idx - 1])
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def __repr__(self):
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return "<{}.parents>".format(type(self._path).__name__)
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UnsupportedOperation = _abc.UnsupportedOperation
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class PurePath(_abc.PurePathBase):
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"""Base class for manipulating paths without I/O.
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PurePath represents a filesystem path and offers operations which
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don't imply any actual filesystem I/O. Depending on your system,
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instantiating a PurePath will return either a PurePosixPath or a
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PureWindowsPath object. You can also instantiate either of these classes
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directly, regardless of your system.
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"""
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__slots__ = (
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# The `_drv`, `_root` and `_tail_cached` slots store parsed and
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# normalized parts of the path. They are set when any of the `drive`,
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# `root` or `_tail` properties are accessed for the first time. The
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# three-part division corresponds to the result of
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# `os.path.splitroot()`, except that the tail is further split on path
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# separators (i.e. it is a list of strings), and that the root and
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# tail are normalized.
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'_drv', '_root', '_tail_cached',
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# The `_str` slot stores the string representation of the path,
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# computed from the drive, root and tail when `__str__()` is called
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# for the first time. It's used to implement `_str_normcase`
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'_str',
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# The `_str_normcase_cached` slot stores the string path with
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# normalized case. It is set when the `_str_normcase` property is
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# accessed for the first time. It's used to implement `__eq__()`
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# `__hash__()`, and `_parts_normcase`
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'_str_normcase_cached',
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# The `_parts_normcase_cached` slot stores the case-normalized
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# string path after splitting on path separators. It's set when the
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# `_parts_normcase` property is accessed for the first time. It's used
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# to implement comparison methods like `__lt__()`.
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'_parts_normcase_cached',
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# The `_hash` slot stores the hash of the case-normalized string
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# path. It's set when `__hash__()` is called for the first time.
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'_hash',
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)
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pathmod = os.path
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def __new__(cls, *args, **kwargs):
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"""Construct a PurePath from one or several strings and or existing
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PurePath objects. The strings and path objects are combined so as
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to yield a canonicalized path, which is incorporated into the
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new PurePath object.
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"""
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if cls is PurePath:
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cls = PureWindowsPath if os.name == 'nt' else PurePosixPath
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return object.__new__(cls)
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def __init__(self, *args):
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paths = []
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for arg in args:
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if isinstance(arg, PurePath):
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if arg.pathmod is ntpath and self.pathmod is posixpath:
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# GH-103631: Convert separators for backwards compatibility.
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paths.extend(path.replace('\\', '/') for path in arg._raw_paths)
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else:
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paths.extend(arg._raw_paths)
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else:
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try:
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path = os.fspath(arg)
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except TypeError:
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path = arg
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if not isinstance(path, str):
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raise TypeError(
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"argument should be a str or an os.PathLike "
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"object where __fspath__ returns a str, "
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f"not {type(path).__name__!r}")
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paths.append(path)
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# Avoid calling super().__init__, as an optimisation
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self._raw_paths = paths
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def __reduce__(self):
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# Using the parts tuple helps share interned path parts
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# when pickling related paths.
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return (self.__class__, self.parts)
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def __repr__(self):
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return "{}({!r})".format(self.__class__.__name__, self.as_posix())
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def __fspath__(self):
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return str(self)
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def __bytes__(self):
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"""Return the bytes representation of the path. This is only
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recommended to use under Unix."""
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return os.fsencode(self)
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@property
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def _str_normcase(self):
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# String with normalized case, for hashing and equality checks
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try:
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return self._str_normcase_cached
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except AttributeError:
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if _abc._is_case_sensitive(self.pathmod):
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self._str_normcase_cached = str(self)
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else:
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self._str_normcase_cached = str(self).lower()
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return self._str_normcase_cached
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def __hash__(self):
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try:
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return self._hash
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except AttributeError:
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self._hash = hash(self._str_normcase)
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return self._hash
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def __eq__(self, other):
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if not isinstance(other, PurePath):
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return NotImplemented
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return self._str_normcase == other._str_normcase and self.pathmod is other.pathmod
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@property
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def _parts_normcase(self):
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# Cached parts with normalized case, for comparisons.
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try:
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return self._parts_normcase_cached
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except AttributeError:
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self._parts_normcase_cached = self._str_normcase.split(self.pathmod.sep)
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return self._parts_normcase_cached
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def __lt__(self, other):
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if not isinstance(other, PurePath) or self.pathmod is not other.pathmod:
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return NotImplemented
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return self._parts_normcase < other._parts_normcase
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def __le__(self, other):
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if not isinstance(other, PurePath) or self.pathmod is not other.pathmod:
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return NotImplemented
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return self._parts_normcase <= other._parts_normcase
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def __gt__(self, other):
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if not isinstance(other, PurePath) or self.pathmod is not other.pathmod:
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return NotImplemented
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return self._parts_normcase > other._parts_normcase
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def __ge__(self, other):
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if not isinstance(other, PurePath) or self.pathmod is not other.pathmod:
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return NotImplemented
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return self._parts_normcase >= other._parts_normcase
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def __str__(self):
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"""Return the string representation of the path, suitable for
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passing to system calls."""
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try:
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return self._str
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except AttributeError:
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self._str = self._format_parsed_parts(self.drive, self.root,
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self._tail) or '.'
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return self._str
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@classmethod
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def _format_parsed_parts(cls, drv, root, tail):
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if drv or root:
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return drv + root + cls.pathmod.sep.join(tail)
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elif tail and cls.pathmod.splitdrive(tail[0])[0]:
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tail = ['.'] + tail
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return cls.pathmod.sep.join(tail)
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def _from_parsed_parts(self, drv, root, tail):
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path_str = self._format_parsed_parts(drv, root, tail)
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path = self.with_segments(path_str)
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path._str = path_str or '.'
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path._drv = drv
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path._root = root
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path._tail_cached = tail
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return path
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@classmethod
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def _parse_path(cls, path):
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if not path:
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return '', '', []
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sep = cls.pathmod.sep
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altsep = cls.pathmod.altsep
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if altsep:
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path = path.replace(altsep, sep)
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drv, root, rel = cls.pathmod.splitroot(path)
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if not root and drv.startswith(sep) and not drv.endswith(sep):
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drv_parts = drv.split(sep)
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if len(drv_parts) == 4 and drv_parts[2] not in '?.':
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# e.g. //server/share
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root = sep
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elif len(drv_parts) == 6:
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# e.g. //?/unc/server/share
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root = sep
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parsed = [sys.intern(str(x)) for x in rel.split(sep) if x and x != '.']
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return drv, root, parsed
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def _load_parts(self):
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paths = self._raw_paths
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if len(paths) == 0:
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path = ''
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elif len(paths) == 1:
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path = paths[0]
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else:
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path = self.pathmod.join(*paths)
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self._drv, self._root, self._tail_cached = self._parse_path(path)
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@property
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def drive(self):
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"""The drive prefix (letter or UNC path), if any."""
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try:
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return self._drv
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except AttributeError:
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self._load_parts()
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return self._drv
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@property
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def root(self):
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"""The root of the path, if any."""
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try:
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return self._root
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except AttributeError:
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self._load_parts()
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return self._root
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@property
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def _tail(self):
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try:
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return self._tail_cached
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except AttributeError:
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self._load_parts()
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return self._tail_cached
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@property
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def anchor(self):
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"""The concatenation of the drive and root, or ''."""
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return self.drive + self.root
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@property
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def parts(self):
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"""An object providing sequence-like access to the
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components in the filesystem path."""
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if self.drive or self.root:
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return (self.drive + self.root,) + tuple(self._tail)
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else:
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return tuple(self._tail)
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@property
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def parent(self):
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"""The logical parent of the path."""
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drv = self.drive
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root = self.root
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tail = self._tail
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if not tail:
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return self
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return self._from_parsed_parts(drv, root, tail[:-1])
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@property
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def parents(self):
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"""A sequence of this path's logical parents."""
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# The value of this property should not be cached on the path object,
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# as doing so would introduce a reference cycle.
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return _PathParents(self)
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@property
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def name(self):
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"""The final path component, if any."""
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tail = self._tail
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if not tail:
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return ''
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return tail[-1]
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def with_name(self, name):
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"""Return a new path with the file name changed."""
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m = self.pathmod
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if not name or m.sep in name or (m.altsep and m.altsep in name) or name == '.':
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raise ValueError(f"Invalid name {name!r}")
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tail = self._tail.copy()
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if not tail:
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raise ValueError(f"{self!r} has an empty name")
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tail[-1] = name
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return self._from_parsed_parts(self.drive, self.root, tail)
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def relative_to(self, other, /, *_deprecated, walk_up=False):
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"""Return the relative path to another path identified by the passed
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arguments. If the operation is not possible (because this is not
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related to the other path), raise ValueError.
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The *walk_up* parameter controls whether `..` may be used to resolve
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the path.
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"""
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if _deprecated:
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msg = ("support for supplying more than one positional argument "
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"to pathlib.PurePath.relative_to() is deprecated and "
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"scheduled for removal in Python 3.14")
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warnings.warn(msg, DeprecationWarning, stacklevel=2)
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other = self.with_segments(other, *_deprecated)
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elif not isinstance(other, PurePath):
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other = self.with_segments(other)
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for step, path in enumerate(chain([other], other.parents)):
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if path == self or path in self.parents:
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break
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elif not walk_up:
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raise ValueError(f"{str(self)!r} is not in the subpath of {str(other)!r}")
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elif path.name == '..':
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raise ValueError(f"'..' segment in {str(other)!r} cannot be walked")
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else:
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raise ValueError(f"{str(self)!r} and {str(other)!r} have different anchors")
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parts = ['..'] * step + self._tail[len(path._tail):]
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return self._from_parsed_parts('', '', parts)
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def is_relative_to(self, other, /, *_deprecated):
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"""Return True if the path is relative to another path or False.
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"""
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if _deprecated:
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msg = ("support for supplying more than one argument to "
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"pathlib.PurePath.is_relative_to() is deprecated and "
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"scheduled for removal in Python 3.14")
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warnings.warn(msg, DeprecationWarning, stacklevel=2)
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other = self.with_segments(other, *_deprecated)
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elif not isinstance(other, PurePath):
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other = self.with_segments(other)
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return other == self or other in self.parents
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def as_uri(self):
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"""Return the path as a URI."""
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if not self.is_absolute():
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raise ValueError("relative path can't be expressed as a file URI")
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drive = self.drive
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if len(drive) == 2 and drive[1] == ':':
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# It's a path on a local drive => 'file:///c:/a/b'
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prefix = 'file:///' + drive
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path = self.as_posix()[2:]
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elif drive:
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# It's a path on a network drive => 'file://host/share/a/b'
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prefix = 'file:'
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path = self.as_posix()
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else:
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# It's a posix path => 'file:///etc/hosts'
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prefix = 'file://'
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path = str(self)
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from urllib.parse import quote_from_bytes
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return prefix + quote_from_bytes(os.fsencode(path))
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# Subclassing os.PathLike makes isinstance() checks slower,
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# which in turn makes Path construction slower. Register instead!
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os.PathLike.register(PurePath)
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class PurePosixPath(PurePath):
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"""PurePath subclass for non-Windows systems.
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On a POSIX system, instantiating a PurePath should return this object.
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However, you can also instantiate it directly on any system.
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"""
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pathmod = posixpath
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__slots__ = ()
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class PureWindowsPath(PurePath):
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"""PurePath subclass for Windows systems.
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On a Windows system, instantiating a PurePath should return this object.
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However, you can also instantiate it directly on any system.
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"""
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pathmod = ntpath
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__slots__ = ()
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class Path(_abc.PathBase, PurePath):
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"""PurePath subclass that can make system calls.
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Path represents a filesystem path but unlike PurePath, also offers
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methods to do system calls on path objects. Depending on your system,
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instantiating a Path will return either a PosixPath or a WindowsPath
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object. You can also instantiate a PosixPath or WindowsPath directly,
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but cannot instantiate a WindowsPath on a POSIX system or vice versa.
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"""
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__slots__ = ()
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as_uri = PurePath.as_uri
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@classmethod
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def _unsupported(cls, method_name):
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msg = f"{cls.__name__}.{method_name}() is unsupported on this system"
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raise UnsupportedOperation(msg)
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def __init__(self, *args, **kwargs):
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if kwargs:
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msg = ("support for supplying keyword arguments to pathlib.PurePath "
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"is deprecated and scheduled for removal in Python {remove}")
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warnings._deprecated("pathlib.PurePath(**kwargs)", msg, remove=(3, 14))
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super().__init__(*args)
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def __new__(cls, *args, **kwargs):
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if cls is Path:
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cls = WindowsPath if os.name == 'nt' else PosixPath
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return object.__new__(cls)
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def stat(self, *, follow_symlinks=True):
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"""
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Return the result of the stat() system call on this path, like
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os.stat() does.
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"""
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return os.stat(self, follow_symlinks=follow_symlinks)
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def is_mount(self):
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"""
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Check if this path is a mount point
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"""
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return os.path.ismount(self)
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def is_junction(self):
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"""
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Whether this path is a junction.
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"""
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return os.path.isjunction(self)
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def open(self, mode='r', buffering=-1, encoding=None,
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errors=None, newline=None):
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"""
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Open the file pointed by this path and return a file object, as
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the built-in open() function does.
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"""
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if "b" not in mode:
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encoding = io.text_encoding(encoding)
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return io.open(self, mode, buffering, encoding, errors, newline)
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def read_text(self, encoding=None, errors=None, newline=None):
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"""
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Open the file in text mode, read it, and close the file.
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"""
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# Call io.text_encoding() here to ensure any warning is raised at an
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# appropriate stack level.
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encoding = io.text_encoding(encoding)
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return _abc.PathBase.read_text(self, encoding, errors, newline)
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def write_text(self, data, encoding=None, errors=None, newline=None):
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"""
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Open the file in text mode, write to it, and close the file.
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"""
|
|
# Call io.text_encoding() here to ensure any warning is raised at an
|
|
# appropriate stack level.
|
|
encoding = io.text_encoding(encoding)
|
|
return _abc.PathBase.write_text(self, data, encoding, errors, newline)
|
|
|
|
def iterdir(self):
|
|
"""Yield path objects of the directory contents.
|
|
|
|
The children are yielded in arbitrary order, and the
|
|
special entries '.' and '..' are not included.
|
|
"""
|
|
return (self._make_child_relpath(name) for name in os.listdir(self))
|
|
|
|
def _scandir(self):
|
|
return os.scandir(self)
|
|
|
|
def _make_child_entry(self, entry, is_dir=False):
|
|
# Transform an entry yielded from _scandir() into a path object.
|
|
path_str = entry.name if str(self) == '.' else entry.path
|
|
path = self.with_segments(path_str)
|
|
path._str = path_str
|
|
path._drv = self.drive
|
|
path._root = self.root
|
|
path._tail_cached = self._tail + [entry.name]
|
|
return path
|
|
|
|
def _make_child_relpath(self, name):
|
|
path_str = str(self)
|
|
tail = self._tail
|
|
if tail:
|
|
path_str = f'{path_str}{self.pathmod.sep}{name}'
|
|
elif path_str != '.':
|
|
path_str = f'{path_str}{name}'
|
|
else:
|
|
path_str = name
|
|
path = self.with_segments(path_str)
|
|
path._str = path_str
|
|
path._drv = self.drive
|
|
path._root = self.root
|
|
path._tail_cached = tail + [name]
|
|
return path
|
|
|
|
def glob(self, pattern, *, case_sensitive=None, follow_symlinks=None):
|
|
"""Iterate over this subtree and yield all existing files (of any
|
|
kind, including directories) matching the given relative pattern.
|
|
"""
|
|
sys.audit("pathlib.Path.glob", self, pattern)
|
|
if pattern.endswith('**'):
|
|
# GH-70303: '**' only matches directories. Add trailing slash.
|
|
warnings.warn(
|
|
"Pattern ending '**' will match files and directories in a "
|
|
"future Python release. Add a trailing slash to match only "
|
|
"directories and remove this warning.",
|
|
FutureWarning, 2)
|
|
pattern = f'{pattern}/'
|
|
return _abc.PathBase.glob(
|
|
self, pattern, case_sensitive=case_sensitive, follow_symlinks=follow_symlinks)
|
|
|
|
def rglob(self, pattern, *, case_sensitive=None, follow_symlinks=None):
|
|
"""Recursively yield all existing files (of any kind, including
|
|
directories) matching the given relative pattern, anywhere in
|
|
this subtree.
|
|
"""
|
|
sys.audit("pathlib.Path.rglob", self, pattern)
|
|
if pattern.endswith('**'):
|
|
# GH-70303: '**' only matches directories. Add trailing slash.
|
|
warnings.warn(
|
|
"Pattern ending '**' will match files and directories in a "
|
|
"future Python release. Add a trailing slash to match only "
|
|
"directories and remove this warning.",
|
|
FutureWarning, 2)
|
|
pattern = f'{pattern}/'
|
|
pattern = f'**/{pattern}'
|
|
return _abc.PathBase.glob(
|
|
self, pattern, case_sensitive=case_sensitive, follow_symlinks=follow_symlinks)
|
|
|
|
def walk(self, top_down=True, on_error=None, follow_symlinks=False):
|
|
"""Walk the directory tree from this directory, similar to os.walk()."""
|
|
sys.audit("pathlib.Path.walk", self, on_error, follow_symlinks)
|
|
return _abc.PathBase.walk(
|
|
self, top_down=top_down, on_error=on_error, follow_symlinks=follow_symlinks)
|
|
|
|
def absolute(self):
|
|
"""Return an absolute version of this path
|
|
No normalization or symlink resolution is performed.
|
|
|
|
Use resolve() to resolve symlinks and remove '..' segments.
|
|
"""
|
|
if self.is_absolute():
|
|
return self
|
|
if self.root:
|
|
drive = os.path.splitroot(os.getcwd())[0]
|
|
return self._from_parsed_parts(drive, self.root, self._tail)
|
|
if self.drive:
|
|
# There is a CWD on each drive-letter drive.
|
|
cwd = os.path.abspath(self.drive)
|
|
else:
|
|
cwd = os.getcwd()
|
|
if not self._tail:
|
|
# Fast path for "empty" paths, e.g. Path("."), Path("") or Path().
|
|
# We pass only one argument to with_segments() to avoid the cost
|
|
# of joining, and we exploit the fact that getcwd() returns a
|
|
# fully-normalized string by storing it in _str. This is used to
|
|
# implement Path.cwd().
|
|
result = self.with_segments(cwd)
|
|
result._str = cwd
|
|
return result
|
|
drive, root, rel = os.path.splitroot(cwd)
|
|
if not rel:
|
|
return self._from_parsed_parts(drive, root, self._tail)
|
|
tail = rel.split(self.pathmod.sep)
|
|
tail.extend(self._tail)
|
|
return self._from_parsed_parts(drive, root, tail)
|
|
|
|
def resolve(self, strict=False):
|
|
"""
|
|
Make the path absolute, resolving all symlinks on the way and also
|
|
normalizing it.
|
|
"""
|
|
|
|
return self.with_segments(os.path.realpath(self, strict=strict))
|
|
|
|
if pwd:
|
|
def owner(self, *, follow_symlinks=True):
|
|
"""
|
|
Return the login name of the file owner.
|
|
"""
|
|
uid = self.stat(follow_symlinks=follow_symlinks).st_uid
|
|
return pwd.getpwuid(uid).pw_name
|
|
|
|
if grp:
|
|
def group(self, *, follow_symlinks=True):
|
|
"""
|
|
Return the group name of the file gid.
|
|
"""
|
|
gid = self.stat(follow_symlinks=follow_symlinks).st_gid
|
|
return grp.getgrgid(gid).gr_name
|
|
|
|
if hasattr(os, "readlink"):
|
|
def readlink(self):
|
|
"""
|
|
Return the path to which the symbolic link points.
|
|
"""
|
|
return self.with_segments(os.readlink(self))
|
|
|
|
def touch(self, mode=0o666, exist_ok=True):
|
|
"""
|
|
Create this file with the given access mode, if it doesn't exist.
|
|
"""
|
|
|
|
if exist_ok:
|
|
# First try to bump modification time
|
|
# Implementation note: GNU touch uses the UTIME_NOW option of
|
|
# the utimensat() / futimens() functions.
|
|
try:
|
|
os.utime(self, None)
|
|
except OSError:
|
|
# Avoid exception chaining
|
|
pass
|
|
else:
|
|
return
|
|
flags = os.O_CREAT | os.O_WRONLY
|
|
if not exist_ok:
|
|
flags |= os.O_EXCL
|
|
fd = os.open(self, flags, mode)
|
|
os.close(fd)
|
|
|
|
def mkdir(self, mode=0o777, parents=False, exist_ok=False):
|
|
"""
|
|
Create a new directory at this given path.
|
|
"""
|
|
try:
|
|
os.mkdir(self, mode)
|
|
except FileNotFoundError:
|
|
if not parents or self.parent == self:
|
|
raise
|
|
self.parent.mkdir(parents=True, exist_ok=True)
|
|
self.mkdir(mode, parents=False, exist_ok=exist_ok)
|
|
except OSError:
|
|
# Cannot rely on checking for EEXIST, since the operating system
|
|
# could give priority to other errors like EACCES or EROFS
|
|
if not exist_ok or not self.is_dir():
|
|
raise
|
|
|
|
def chmod(self, mode, *, follow_symlinks=True):
|
|
"""
|
|
Change the permissions of the path, like os.chmod().
|
|
"""
|
|
os.chmod(self, mode, follow_symlinks=follow_symlinks)
|
|
|
|
def unlink(self, missing_ok=False):
|
|
"""
|
|
Remove this file or link.
|
|
If the path is a directory, use rmdir() instead.
|
|
"""
|
|
try:
|
|
os.unlink(self)
|
|
except FileNotFoundError:
|
|
if not missing_ok:
|
|
raise
|
|
|
|
def rmdir(self):
|
|
"""
|
|
Remove this directory. The directory must be empty.
|
|
"""
|
|
os.rmdir(self)
|
|
|
|
def rename(self, target):
|
|
"""
|
|
Rename this path to the target path.
|
|
|
|
The target path may be absolute or relative. Relative paths are
|
|
interpreted relative to the current working directory, *not* the
|
|
directory of the Path object.
|
|
|
|
Returns the new Path instance pointing to the target path.
|
|
"""
|
|
os.rename(self, target)
|
|
return self.with_segments(target)
|
|
|
|
def replace(self, target):
|
|
"""
|
|
Rename this path to the target path, overwriting if that path exists.
|
|
|
|
The target path may be absolute or relative. Relative paths are
|
|
interpreted relative to the current working directory, *not* the
|
|
directory of the Path object.
|
|
|
|
Returns the new Path instance pointing to the target path.
|
|
"""
|
|
os.replace(self, target)
|
|
return self.with_segments(target)
|
|
|
|
if hasattr(os, "symlink"):
|
|
def symlink_to(self, target, target_is_directory=False):
|
|
"""
|
|
Make this path a symlink pointing to the target path.
|
|
Note the order of arguments (link, target) is the reverse of os.symlink.
|
|
"""
|
|
os.symlink(target, self, target_is_directory)
|
|
|
|
if hasattr(os, "link"):
|
|
def hardlink_to(self, target):
|
|
"""
|
|
Make this path a hard link pointing to the same file as *target*.
|
|
|
|
Note the order of arguments (self, target) is the reverse of os.link's.
|
|
"""
|
|
os.link(target, self)
|
|
|
|
def expanduser(self):
|
|
""" Return a new path with expanded ~ and ~user constructs
|
|
(as returned by os.path.expanduser)
|
|
"""
|
|
if (not (self.drive or self.root) and
|
|
self._tail and self._tail[0][:1] == '~'):
|
|
homedir = os.path.expanduser(self._tail[0])
|
|
if homedir[:1] == "~":
|
|
raise RuntimeError("Could not determine home directory.")
|
|
drv, root, tail = self._parse_path(homedir)
|
|
return self._from_parsed_parts(drv, root, tail + self._tail[1:])
|
|
|
|
return self
|
|
|
|
@classmethod
|
|
def from_uri(cls, uri):
|
|
"""Return a new path from the given 'file' URI."""
|
|
if not uri.startswith('file:'):
|
|
raise ValueError(f"URI does not start with 'file:': {uri!r}")
|
|
path = uri[5:]
|
|
if path[:3] == '///':
|
|
# Remove empty authority
|
|
path = path[2:]
|
|
elif path[:12] == '//localhost/':
|
|
# Remove 'localhost' authority
|
|
path = path[11:]
|
|
if path[:3] == '///' or (path[:1] == '/' and path[2:3] in ':|'):
|
|
# Remove slash before DOS device/UNC path
|
|
path = path[1:]
|
|
if path[1:2] == '|':
|
|
# Replace bar with colon in DOS drive
|
|
path = path[:1] + ':' + path[2:]
|
|
from urllib.parse import unquote_to_bytes
|
|
path = cls(os.fsdecode(unquote_to_bytes(path)))
|
|
if not path.is_absolute():
|
|
raise ValueError(f"URI is not absolute: {uri!r}")
|
|
return path
|
|
|
|
|
|
class PosixPath(Path, PurePosixPath):
|
|
"""Path subclass for non-Windows systems.
|
|
|
|
On a POSIX system, instantiating a Path should return this object.
|
|
"""
|
|
__slots__ = ()
|
|
|
|
if os.name == 'nt':
|
|
def __new__(cls, *args, **kwargs):
|
|
raise UnsupportedOperation(
|
|
f"cannot instantiate {cls.__name__!r} on your system")
|
|
|
|
class WindowsPath(Path, PureWindowsPath):
|
|
"""Path subclass for Windows systems.
|
|
|
|
On a Windows system, instantiating a Path should return this object.
|
|
"""
|
|
__slots__ = ()
|
|
|
|
if os.name != 'nt':
|
|
def __new__(cls, *args, **kwargs):
|
|
raise UnsupportedOperation(
|
|
f"cannot instantiate {cls.__name__!r} on your system")
|