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/opt/imh/python3.13/lib/python3.13/pathlib/_local.py
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import io import ntpath import operator import os import posixpath import sys import warnings from glob import _StringGlobber from itertools import chain from _collections_abc import Sequence try: import pwd except ImportError: pwd = None try: import grp except ImportError: grp = None from ._abc import UnsupportedOperation, PurePathBase, PathBase __all__ = [ "PurePath", "PurePosixPath", "PureWindowsPath", "Path", "PosixPath", "WindowsPath", ] class _PathParents(Sequence): """This object provides sequence-like access to the logical ancestors of a path. Don't try to construct it yourself.""" __slots__ = ('_path', '_drv', '_root', '_tail') def __init__(self, path): self._path = path self._drv = path.drive self._root = path.root self._tail = path._tail def __len__(self): return len(self._tail) def __getitem__(self, idx): if isinstance(idx, slice): return tuple(self[i] for i in range(*idx.indices(len(self)))) if idx >= len(self) or idx < -len(self): raise IndexError(idx) if idx < 0: idx += len(self) return self._path._from_parsed_parts(self._drv, self._root, self._tail[:-idx - 1]) def __repr__(self): return "<{}.parents>".format(type(self._path).__name__) class PurePath(PurePathBase): """Base class for manipulating paths without I/O. PurePath represents a filesystem path and offers operations which don't imply any actual filesystem I/O. Depending on your system, instantiating a PurePath will return either a PurePosixPath or a PureWindowsPath object. You can also instantiate either of these classes directly, regardless of your system. """ __slots__ = ( # The `_raw_paths` slot stores unnormalized string paths. This is set # in the `__init__()` method. '_raw_paths', # The `_drv`, `_root` and `_tail_cached` slots store parsed and # normalized parts of the path. They are set when any of the `drive`, # `root` or `_tail` properties are accessed for the first time. The # three-part division corresponds to the result of # `os.path.splitroot()`, except that the tail is further split on path # separators (i.e. it is a list of strings), and that the root and # tail are normalized. '_drv', '_root', '_tail_cached', # The `_str` slot stores the string representation of the path, # computed from the drive, root and tail when `__str__()` is called # for the first time. It's used to implement `_str_normcase` '_str', # The `_str_normcase_cached` slot stores the string path with # normalized case. It is set when the `_str_normcase` property is # accessed for the first time. It's used to implement `__eq__()` # `__hash__()`, and `_parts_normcase` '_str_normcase_cached', # The `_parts_normcase_cached` slot stores the case-normalized # string path after splitting on path separators. It's set when the # `_parts_normcase` property is accessed for the first time. It's used # to implement comparison methods like `__lt__()`. '_parts_normcase_cached', # The `_hash` slot stores the hash of the case-normalized string # path. It's set when `__hash__()` is called for the first time. '_hash', ) parser = os.path _globber = _StringGlobber def __new__(cls, *args, **kwargs): """Construct a PurePath from one or several strings and or existing PurePath objects. The strings and path objects are combined so as to yield a canonicalized path, which is incorporated into the new PurePath object. """ if cls is PurePath: cls = PureWindowsPath if os.name == 'nt' else PurePosixPath return object.__new__(cls) def __init__(self, *args): paths = [] for arg in args: if isinstance(arg, PurePath): if arg.parser is not self.parser: # GH-103631: Convert separators for backwards compatibility. paths.append(arg.as_posix()) else: paths.extend(arg._raw_paths) else: try: path = os.fspath(arg) except TypeError: path = arg if not isinstance(path, str): raise TypeError( "argument should be a str or an os.PathLike " "object where __fspath__ returns a str, " f"not {type(path).__name__!r}") paths.append(path) # Avoid calling super().__init__, as an optimisation self._raw_paths = paths def joinpath(self, *pathsegments): """Combine this path with one or several arguments, and return a new path representing either a subpath (if all arguments are relative paths) or a totally different path (if one of the arguments is anchored). """ return self.with_segments(self, *pathsegments) def __truediv__(self, key): try: return self.with_segments(self, key) except TypeError: return NotImplemented def __rtruediv__(self, key): try: return self.with_segments(key, self) except TypeError: return NotImplemented def __reduce__(self): return self.__class__, tuple(self._raw_paths) def __repr__(self): return "{}({!r})".format(self.__class__.__name__, self.as_posix()) def __fspath__(self): return str(self) def __bytes__(self): """Return the bytes representation of the path. This is only recommended to use under Unix.""" return os.fsencode(self) @property def _str_normcase(self): # String with normalized case, for hashing and equality checks try: return self._str_normcase_cached except AttributeError: if self.parser is posixpath: self._str_normcase_cached = str(self) else: self._str_normcase_cached = str(self).lower() return self._str_normcase_cached def __hash__(self): try: return self._hash except AttributeError: self._hash = hash(self._str_normcase) return self._hash def __eq__(self, other): if not isinstance(other, PurePath): return NotImplemented return self._str_normcase == other._str_normcase and self.parser is other.parser @property def _parts_normcase(self): # Cached parts with normalized case, for comparisons. try: return self._parts_normcase_cached except AttributeError: self._parts_normcase_cached = self._str_normcase.split(self.parser.sep) return self._parts_normcase_cached def __lt__(self, other): if not isinstance(other, PurePath) or self.parser is not other.parser: return NotImplemented return self._parts_normcase < other._parts_normcase def __le__(self, other): if not isinstance(other, PurePath) or self.parser is not other.parser: return NotImplemented return self._parts_normcase <= other._parts_normcase def __gt__(self, other): if not isinstance(other, PurePath) or self.parser is not other.parser: return NotImplemented return self._parts_normcase > other._parts_normcase def __ge__(self, other): if not isinstance(other, PurePath) or self.parser is not other.parser: return NotImplemented return self._parts_normcase >= other._parts_normcase def __str__(self): """Return the string representation of the path, suitable for passing to system calls.""" try: return self._str except AttributeError: self._str = self._format_parsed_parts(self.drive, self.root, self._tail) or '.' return self._str @classmethod def _format_parsed_parts(cls, drv, root, tail): if drv or root: return drv + root + cls.parser.sep.join(tail) elif tail and cls.parser.splitdrive(tail[0])[0]: tail = ['.'] + tail return cls.parser.sep.join(tail) def _from_parsed_parts(self, drv, root, tail): path = self._from_parsed_string(self._format_parsed_parts(drv, root, tail)) path._drv = drv path._root = root path._tail_cached = tail return path def _from_parsed_string(self, path_str): path = self.with_segments(path_str) path._str = path_str or '.' return path @classmethod def _parse_path(cls, path): if not path: return '', '', [] sep = cls.parser.sep altsep = cls.parser.altsep if altsep: path = path.replace(altsep, sep) drv, root, rel = cls.parser.splitroot(path) if not root and drv.startswith(sep) and not drv.endswith(sep): drv_parts = drv.split(sep) if len(drv_parts) == 4 and drv_parts[2] not in '?.': # e.g. //server/share root = sep elif len(drv_parts) == 6: # e.g. //?/unc/server/share root = sep parsed = [sys.intern(str(x)) for x in rel.split(sep) if x and x != '.'] return drv, root, parsed @property def _raw_path(self): """The joined but unnormalized path.""" paths = self._raw_paths if len(paths) == 0: path = '' elif len(paths) == 1: path = paths[0] else: path = self.parser.join(*paths) return path @property def drive(self): """The drive prefix (letter or UNC path), if any.""" try: return self._drv except AttributeError: self._drv, self._root, self._tail_cached = self._parse_path(self._raw_path) return self._drv @property def root(self): """The root of the path, if any.""" try: return self._root except AttributeError: self._drv, self._root, self._tail_cached = self._parse_path(self._raw_path) return self._root @property def _tail(self): try: return self._tail_cached except AttributeError: self._drv, self._root, self._tail_cached = self._parse_path(self._raw_path) return self._tail_cached @property def anchor(self): """The concatenation of the drive and root, or ''.""" return self.drive + self.root @property def parts(self): """An object providing sequence-like access to the components in the filesystem path.""" if self.drive or self.root: return (self.drive + self.root,) + tuple(self._tail) else: return tuple(self._tail) @property def parent(self): """The logical parent of the path.""" drv = self.drive root = self.root tail = self._tail if not tail: return self return self._from_parsed_parts(drv, root, tail[:-1]) @property def parents(self): """A sequence of this path's logical parents.""" # The value of this property should not be cached on the path object, # as doing so would introduce a reference cycle. return _PathParents(self) @property def name(self): """The final path component, if any.""" tail = self._tail if not tail: return '' return tail[-1] def with_name(self, name): """Return a new path with the file name changed.""" p = self.parser if not name or p.sep in name or (p.altsep and p.altsep in name) or name == '.': raise ValueError(f"Invalid name {name!r}") tail = self._tail.copy() if not tail: raise ValueError(f"{self!r} has an empty name") tail[-1] = name return self._from_parsed_parts(self.drive, self.root, tail) def relative_to(self, other, /, *_deprecated, walk_up=False): """Return the relative path to another path identified by the passed arguments. If the operation is not possible (because this is not related to the other path), raise ValueError. The *walk_up* parameter controls whether `..` may be used to resolve the path. """ if _deprecated: msg = ("support for supplying more than one positional argument " "to pathlib.PurePath.relative_to() is deprecated and " "scheduled for removal in Python 3.14") warnings.warn(msg, DeprecationWarning, stacklevel=2) other = self.with_segments(other, *_deprecated) elif not isinstance(other, PurePath): other = self.with_segments(other) for step, path in enumerate(chain([other], other.parents)): if path == self or path in self.parents: break elif not walk_up: raise ValueError(f"{str(self)!r} is not in the subpath of {str(other)!r}") elif path.name == '..': raise ValueError(f"'..' segment in {str(other)!r} cannot be walked") else: raise ValueError(f"{str(self)!r} and {str(other)!r} have different anchors") parts = ['..'] * step + self._tail[len(path._tail):] return self._from_parsed_parts('', '', parts) def is_relative_to(self, other, /, *_deprecated): """Return True if the path is relative to another path or False. """ if _deprecated: msg = ("support for supplying more than one argument to " "pathlib.PurePath.is_relative_to() is deprecated and " "scheduled for removal in Python 3.14") warnings.warn(msg, DeprecationWarning, stacklevel=2) other = self.with_segments(other, *_deprecated) elif not isinstance(other, PurePath): other = self.with_segments(other) return other == self or other in self.parents def is_absolute(self): """True if the path is absolute (has both a root and, if applicable, a drive).""" if self.parser is posixpath: # Optimization: work with raw paths on POSIX. for path in self._raw_paths: if path.startswith('/'): return True return False return self.parser.isabs(self) def is_reserved(self): """Return True if the path contains one of the special names reserved by the system, if any.""" msg = ("pathlib.PurePath.is_reserved() is deprecated and scheduled " "for removal in Python 3.15. Use os.path.isreserved() to " "detect reserved paths on Windows.") warnings.warn(msg, DeprecationWarning, stacklevel=2) if self.parser is ntpath: return self.parser.isreserved(self) return False def as_uri(self): """Return the path as a URI.""" if not self.is_absolute(): raise ValueError("relative path can't be expressed as a file URI") drive = self.drive if len(drive) == 2 and drive[1] == ':': # It's a path on a local drive => 'file:///c:/a/b' prefix = 'file:///' + drive path = self.as_posix()[2:] elif drive: # It's a path on a network drive => 'file://host/share/a/b' prefix = 'file:' path = self.as_posix() else: # It's a posix path => 'file:///etc/hosts' prefix = 'file://' path = str(self) from urllib.parse import quote_from_bytes return prefix + quote_from_bytes(os.fsencode(path)) @property def _pattern_str(self): """The path expressed as a string, for use in pattern-matching.""" # The string representation of an empty path is a single dot ('.'). Empty # paths shouldn't match wildcards, so we change it to the empty string. path_str = str(self) return '' if path_str == '.' else path_str # Subclassing os.PathLike makes isinstance() checks slower, # which in turn makes Path construction slower. Register instead! os.PathLike.register(PurePath) class PurePosixPath(PurePath): """PurePath subclass for non-Windows systems. On a POSIX system, instantiating a PurePath should return this object. However, you can also instantiate it directly on any system. """ parser = posixpath __slots__ = () class PureWindowsPath(PurePath): """PurePath subclass for Windows systems. On a Windows system, instantiating a PurePath should return this object. However, you can also instantiate it directly on any system. """ parser = ntpath __slots__ = () class Path(PathBase, PurePath): """PurePath subclass that can make system calls. Path represents a filesystem path but unlike PurePath, also offers methods to do system calls on path objects. Depending on your system, instantiating a Path will return either a PosixPath or a WindowsPath object. You can also instantiate a PosixPath or WindowsPath directly, but cannot instantiate a WindowsPath on a POSIX system or vice versa. """ __slots__ = () as_uri = PurePath.as_uri @classmethod def _unsupported_msg(cls, attribute): return f"{cls.__name__}.{attribute} is unsupported on this system" def __init__(self, *args, **kwargs): if kwargs: msg = ("support for supplying keyword arguments to pathlib.PurePath " "is deprecated and scheduled for removal in Python {remove}") warnings._deprecated("pathlib.PurePath(**kwargs)", msg, remove=(3, 14)) super().__init__(*args) def __new__(cls, *args, **kwargs): if cls is Path: cls = WindowsPath if os.name == 'nt' else PosixPath return object.__new__(cls) def stat(self, *, follow_symlinks=True): """ Return the result of the stat() system call on this path, like os.stat() does. """ return os.stat(self, follow_symlinks=follow_symlinks) def is_mount(self): """ Check if this path is a mount point """ return os.path.ismount(self) def is_junction(self): """ Whether this path is a junction. """ return os.path.isjunction(self) def open(self, mode='r', buffering=-1, encoding=None, errors=None, newline=None): """ Open the file pointed to by this path and return a file object, as the built-in open() function does. """ if "b" not in mode: encoding = io.text_encoding(encoding) return io.open(self, mode, buffering, encoding, errors, newline) def read_text(self, encoding=None, errors=None, newline=None): """ Open the file in text mode, read it, and close the file. """ # Call io.text_encoding() here to ensure any warning is raised at an # appropriate stack level. encoding = io.text_encoding(encoding) return PathBase.read_text(self, encoding, errors, newline) def write_text(self, data, encoding=None, errors=None, newline=None): """ Open the file in text mode, write to it, and close the file. """ # Call io.text_encoding() here to ensure any warning is raised at an # appropriate stack level. encoding = io.text_encoding(encoding) return PathBase.write_text(self, data, encoding, errors, newline) _remove_leading_dot = operator.itemgetter(slice(2, None)) _remove_trailing_slash = operator.itemgetter(slice(-1)) def _filter_trailing_slash(self, paths): sep = self.parser.sep anchor_len = len(self.anchor) for path_str in paths: if len(path_str) > anchor_len and path_str[-1] == sep: path_str = path_str[:-1] yield path_str 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. """ root_dir = str(self) with os.scandir(root_dir) as scandir_it: paths = [entry.path for entry in scandir_it] if root_dir == '.': paths = map(self._remove_leading_dot, paths) return map(self._from_parsed_string, paths) def glob(self, pattern, *, case_sensitive=None, recurse_symlinks=False): """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 not isinstance(pattern, PurePath): pattern = self.with_segments(pattern) if pattern.anchor: raise NotImplementedError("Non-relative patterns are unsupported") parts = pattern._tail.copy() if not parts: raise ValueError("Unacceptable pattern: {!r}".format(pattern)) raw = pattern._raw_path if raw[-1] in (self.parser.sep, self.parser.altsep): # GH-65238: pathlib doesn't preserve trailing slash. Add it back. parts.append('') select = self._glob_selector(parts[::-1], case_sensitive, recurse_symlinks) root = str(self) paths = select(root) # Normalize results if root == '.': paths = map(self._remove_leading_dot, paths) if parts[-1] == '': paths = map(self._remove_trailing_slash, paths) elif parts[-1] == '**': paths = self._filter_trailing_slash(paths) paths = map(self._from_parsed_string, paths) return paths def rglob(self, pattern, *, case_sensitive=None, recurse_symlinks=False): """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 not isinstance(pattern, PurePath): pattern = self.with_segments(pattern) pattern = '**' / pattern return self.glob(pattern, case_sensitive=case_sensitive, recurse_symlinks=recurse_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) root_dir = str(self) if not follow_symlinks: follow_symlinks = os._walk_symlinks_as_files results = os.walk(root_dir, top_down, on_error, follow_symlinks) for path_str, dirnames, filenames in results: if root_dir == '.': path_str = path_str[2:] yield self._from_parsed_string(path_str), dirnames, filenames 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(). return self._from_parsed_string(cwd) drive, root, rel = os.path.splitroot(cwd) if not rel: return self._from_parsed_parts(drive, root, self._tail) tail = rel.split(self.parser.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")
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