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Düzenlenen Dosya: fake_pathlib.py

# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""A fake implementation for pathlib working with FakeFilesystem.
New in pyfakefs 3.0.

Usage:

* With fake_filesystem_unittest:
  If using fake_filesystem_unittest.TestCase, pathlib gets replaced
  by fake_pathlib together with other file system related modules.

* Stand-alone with FakeFilesystem:
  `filesystem = fake_filesystem.FakeFilesystem()`
  `fake_pathlib_module = fake_filesystem.FakePathlibModule(filesystem)`
  `path = fake_pathlib_module.Path('/foo/bar')`

Note: as the implementation is based on FakeFilesystem, all faked classes
(including PurePosixPath, PosixPath, PureWindowsPath and WindowsPath)
get the properties of the underlying fake filesystem.
"""
import errno
import fnmatch
import functools
import inspect
import ntpath
import os
import pathlib
import posixpath
import re
import sys
from pathlib import PurePath
from typing import Callable
from urllib.parse import quote_from_bytes as urlquote_from_bytes

from pyfakefs import fake_scandir
from pyfakefs.extra_packages import use_scandir
from pyfakefs.fake_filesystem import FakeFilesystem
from pyfakefs.fake_open import FakeFileOpen
from pyfakefs.fake_os import FakeOsModule, use_original_os
from pyfakefs.helpers import IS_PYPY

def init_module(filesystem):
    """Initializes the fake module with the fake file system."""
    # pylint: disable=protected-access
    FakePath.filesystem = filesystem
    if sys.version_info < (3, 12):
        FakePathlibModule.PureWindowsPath._flavour = _FakeWindowsFlavour(filesystem)
        FakePathlibModule.PurePosixPath._flavour = _FakePosixFlavour(filesystem)
    else:
        # in Python 3.12, the flavour is no longer an own class,
        # but points to the os-specific path module (posixpath/ntpath)
        fake_os = FakeOsModule(filesystem)
        fake_path = fake_os.path
        FakePathlibModule.PureWindowsPath._flavour = fake_path
        FakePathlibModule.PurePosixPath._flavour = fake_path

def _wrap_strfunc(strfunc):
    @functools.wraps(strfunc)
    def _wrapped(pathobj, *args, **kwargs):
        return strfunc(pathobj.filesystem, str(pathobj), *args, **kwargs)

return staticmethod(_wrapped)

def _wrap_binary_strfunc(strfunc):
    @functools.wraps(strfunc)
    def _wrapped(pathobj1, pathobj2, *args):
        return strfunc(pathobj1.filesystem, str(pathobj1), str(pathobj2), *args)

return staticmethod(_wrapped)

def _wrap_binary_strfunc_reverse(strfunc):
    @functools.wraps(strfunc)
    def _wrapped(pathobj1, pathobj2, *args):
        return strfunc(pathobj2.filesystem, str(pathobj2), str(pathobj1), *args)

return staticmethod(_wrapped)

try:
    accessor = pathlib._Accessor  # type: ignore[attr-defined]
except AttributeError:
    accessor = object

class _FakeAccessor(accessor):  # type: ignore[valid-type, misc]
    """Accessor which forwards some of the functions to FakeFilesystem
    methods.
    """

stat = _wrap_strfunc(FakeFilesystem.stat)

lstat = _wrap_strfunc(
        lambda fs, path: FakeFilesystem.stat(fs, path, follow_symlinks=False)
    )

listdir = _wrap_strfunc(FakeFilesystem.listdir)

if use_scandir:
        scandir = _wrap_strfunc(fake_scandir.scandir)

if hasattr(os, "lchmod"):
        lchmod = _wrap_strfunc(
            lambda fs, path, mode: FakeFilesystem.chmod(
                fs, path, mode, follow_symlinks=False
            )
        )
    else:

def lchmod(self, pathobj, *args, **kwargs):
            """Raises not implemented for Windows systems."""
            raise NotImplementedError("lchmod() not available on this system")

def chmod(self, pathobj, *args, **kwargs):
        if "follow_symlinks" in kwargs:
            if sys.version_info < (3, 10):
                raise TypeError(
                    "chmod() got an unexpected keyword " "argument 'follow_symlinks'"
                )

if not kwargs["follow_symlinks"] and (
                os.chmod not in os.supports_follow_symlinks or IS_PYPY
            ):
                raise NotImplementedError(
                    "`follow_symlinks` for chmod() is not available " "on this system"
                )
        return pathobj.filesystem.chmod(str(pathobj), *args, **kwargs)

mkdir = _wrap_strfunc(FakeFilesystem.makedir)

unlink = _wrap_strfunc(FakeFilesystem.remove)

rmdir = _wrap_strfunc(FakeFilesystem.rmdir)

rename = _wrap_binary_strfunc(FakeFilesystem.rename)

replace = _wrap_binary_strfunc(
        lambda fs, old_path, new_path: FakeFilesystem.rename(
            fs, old_path, new_path, force_replace=True
        )
    )

symlink = _wrap_binary_strfunc_reverse(
        lambda fs, fpath, target, target_is_dir: FakeFilesystem.create_symlink(
            fs, fpath, target, create_missing_dirs=False
        )
    )

if (3, 8) <= sys.version_info:
        link_to = _wrap_binary_strfunc(
            lambda fs, file_path, link_target: FakeFilesystem.link(
                fs, file_path, link_target
            )
        )

if sys.version_info >= (3, 10):
        link = _wrap_binary_strfunc(
            lambda fs, file_path, link_target: FakeFilesystem.link(
                fs, file_path, link_target
            )
        )

# this will use the fake filesystem because os is patched
        def getcwd(self):
            return os.getcwd()

readlink = _wrap_strfunc(FakeFilesystem.readlink)

utime = _wrap_strfunc(FakeFilesystem.utime)

_fake_accessor = _FakeAccessor()

if sys.version_info < (3, 12):
    flavour = pathlib._Flavour  # type: ignore[attr-defined]

class _FakeFlavour(flavour):  # type: ignore[valid-type, misc]
        """Fake Flavour implementation used by PurePath and _Flavour"""

filesystem = None
        sep = "/"
        altsep = None
        has_drv = False

ext_namespace_prefix = "\\\\?\\"

drive_letters = {chr(x) for x in range(ord("a"), ord("z") + 1)} | {
            chr(x) for x in range(ord("A"), ord("Z") + 1)
        }

def __init__(self, filesystem):
            self.filesystem = filesystem
            self.sep = filesystem.path_separator
            self.altsep = filesystem.alternative_path_separator
            self.has_drv = filesystem.is_windows_fs
            super(_FakeFlavour, self).__init__()

@staticmethod
        def _split_extended_path(path, ext_prefix=ext_namespace_prefix):
            prefix = ""
            if path.startswith(ext_prefix):
                prefix = path[:4]
                path = path[4:]
                if path.startswith("UNC\\"):
                    prefix += path[:3]
                    path = "\\" + path[3:]
            return prefix, path

def _splitroot_with_drive(self, path, sep):
            first = path[0:1]
            second = path[1:2]
            if second == sep and first == sep:
                # extended paths should also disable the collapsing of "."
                # components (according to MSDN docs).
                prefix, path = self._split_extended_path(path)
                first = path[0:1]
                second = path[1:2]
            else:
                prefix = ""
            third = path[2:3]
            if second == sep and first == sep and third != sep:
                # is a UNC path:
                # vvvvvvvvvvvvvvvvvvvvv root
                # \\machine\mountpoint\directory\etc\...
                #            directory ^^^^^^^^^^^^^^
                index = path.find(sep, 2)
                if index != -1:
                    index2 = path.find(sep, index + 1)
                    # a UNC path can't have two slashes in a row
                    # (after the initial two)
                    if index2 != index + 1:
                        if index2 == -1:
                            index2 = len(path)
                        if prefix:
                            return prefix + path[1:index2], sep, path[index2 + 1 :]
                        return path[:index2], sep, path[index2 + 1 :]
            drv = root = ""
            if second == ":" and first in self.drive_letters:
                drv = path[:2]
                path = path[2:]
                first = third
            if first == sep:
                root = first
                path = path.lstrip(sep)
            return prefix + drv, root, path

@staticmethod
        def _splitroot_posix(path, sep):
            if path and path[0] == sep:
                stripped_part = path.lstrip(sep)
                if len(path) - len(stripped_part) == 2:
                    return "", sep * 2, stripped_part
                return "", sep, stripped_part
            else:
                return "", "", path

def splitroot(self, path, sep=None):
            """Split path into drive, root and rest."""
            if sep is None:
                sep = self.filesystem.path_separator
            if self.filesystem.is_windows_fs:
                return self._splitroot_with_drive(path, sep)
            return self._splitroot_posix(path, sep)

def casefold(self, path):
            """Return the lower-case version of s for a Windows filesystem."""
            if self.filesystem.is_windows_fs:
                return path.lower()
            return path

def casefold_parts(self, parts):
            """Return the lower-case version of parts for a Windows filesystem."""
            if self.filesystem.is_windows_fs:
                return [p.lower() for p in parts]
            return parts

def _resolve_posix(self, path, strict):
            sep = self.sep
            seen = {}

def _resolve(path, rest):
                if rest.startswith(sep):
                    path = ""

for name in rest.split(sep):
                    if not name or name == ".":
                        # current dir
                        continue
                    if name == "..":
                        # parent dir
                        path, _, _ = path.rpartition(sep)
                        continue
                    newpath = path + sep + name
                    if newpath in seen:
                        # Already seen this path
                        path = seen[newpath]
                        if path is not None:
                            # use cached value
                            continue
                        # The symlink is not resolved, so we must have
                        # a symlink loop.
                        raise RuntimeError("Symlink loop from %r" % newpath)
                    # Resolve the symbolic link
                    try:
                        target = self.filesystem.readlink(newpath)
                    except OSError as e:
                        if e.errno != errno.EINVAL and strict:
                            raise
                        # Not a symlink, or non-strict mode. We just leave the path
                        # untouched.
                        path = newpath
                    else:
                        seen[newpath] = None  # not resolved symlink
                        path = _resolve(path, target)
                        seen[newpath] = path  # resolved symlink

return path

# NOTE: according to POSIX, getcwd() cannot contain path components
            # which are symlinks.
            base = "" if path.is_absolute() else self.filesystem.cwd
            return _resolve(base, str(path)) or sep

def _resolve_windows(self, path, strict):
            path = str(path)
            if not path:
                return os.getcwd()
            previous_s = None
            if strict:
                if not self.filesystem.exists(path):
                    self.filesystem.raise_os_error(errno.ENOENT, path)
                return self.filesystem.resolve_path(path)
            else:
                while True:
                    try:
                        path = self.filesystem.resolve_path(path)
                    except OSError:
                        previous_s = path
                        path = self.filesystem.splitpath(path)[0]
                    else:
                        if previous_s is None:
                            return path
                        return self.filesystem.joinpaths(
                            path, os.path.basename(previous_s)
                        )

def resolve(self, path, strict):
            """Make the path absolute, resolving any symlinks."""
            if self.filesystem.is_windows_fs:
                return self._resolve_windows(path, strict)
            return self._resolve_posix(path, strict)

def gethomedir(self, username):
            """Return the home directory of the current user."""
            if not username:
                try:
                    return os.environ["HOME"]
                except KeyError:
                    import pwd

return pwd.getpwuid(os.getuid()).pw_dir
            else:
                import pwd

try:
                    return pwd.getpwnam(username).pw_dir
                except KeyError:
                    raise RuntimeError(
                        "Can't determine home directory " "for %r" % username
                    )

class _FakeWindowsFlavour(_FakeFlavour):
        """Flavour used by PureWindowsPath with some Windows specific
        implementations independent of FakeFilesystem properties.
        """

reserved_names = (
            {"CON", "PRN", "AUX", "NUL"}
            | {"COM%d" % i for i in range(1, 10)}
            | {"LPT%d" % i for i in range(1, 10)}
        )
        pathmod = ntpath

def is_reserved(self, parts):
            """Return True if the path is considered reserved under Windows."""

# NOTE: the rules for reserved names seem somewhat complicated
            # (e.g. r"..\NUL" is reserved but not r"foo\NUL").
            # We err on the side of caution and return True for paths which are
            # not considered reserved by Windows.
            if not parts:
                return False
            if self.filesystem.is_windows_fs and parts[0].startswith("\\\\"):
                # UNC paths are never reserved
                return False
            return parts[-1].partition(".")[0].upper() in self.reserved_names

def make_uri(self, path):
            """Return a file URI for the given path"""

# Under Windows, file URIs use the UTF-8 encoding.
            # original version, not faked
            drive = path.drive
            if len(drive) == 2 and drive[1] == ":":
                # It's a path on a local drive => 'file:///c:/a/b'
                rest = path.as_posix()[2:].lstrip("/")
                return "file:///%s/%s" % (
                    drive,
                    urlquote_from_bytes(rest.encode("utf-8")),
                )
            else:
                # It's a path on a network drive => 'file://host/share/a/b'
                return "file:" + urlquote_from_bytes(path.as_posix().encode("utf-8"))

def gethomedir(self, username):
            """Return the home directory of the current user."""

# original version, not faked
            if "HOME" in os.environ:
                userhome = os.environ["HOME"]
            elif "USERPROFILE" in os.environ:
                userhome = os.environ["USERPROFILE"]
            elif "HOMEPATH" in os.environ:
                try:
                    drv = os.environ["HOMEDRIVE"]
                except KeyError:
                    drv = ""
                userhome = drv + os.environ["HOMEPATH"]
            else:
                raise RuntimeError("Can't determine home directory")

if username:
                # Try to guess user home directory.  By default all users
                # directories are located in the same place and are named by
                # corresponding usernames.  If current user home directory points
                # to nonstandard place, this guess is likely wrong.
                if os.environ["USERNAME"] != username:
                    drv, root, parts = self.parse_parts((userhome,))
                    if parts[-1] != os.environ["USERNAME"]:
                        raise RuntimeError(
                            "Can't determine home directory " "for %r" % username
                        )
                    parts[-1] = username
                    if drv or root:
                        userhome = drv + root + self.join(parts[1:])
                    else:
                        userhome = self.join(parts)
            return userhome

def compile_pattern(self, pattern):
            return re.compile(fnmatch.translate(pattern), re.IGNORECASE).fullmatch

class _FakePosixFlavour(_FakeFlavour):
        """Flavour used by PurePosixPath with some Unix specific implementations
        independent of FakeFilesystem properties.
        """

pathmod = posixpath

def is_reserved(self, parts):
            return False

def make_uri(self, path):
            # We represent the path using the local filesystem encoding,
            # for portability to other applications.
            bpath = bytes(path)
            return "file://" + urlquote_from_bytes(bpath)

def gethomedir(self, username):
            # original version, not faked
            if not username:
                try:
                    return os.environ["HOME"]
                except KeyError:
                    import pwd

return pwd.getpwuid(os.getuid()).pw_dir
            else:
                import pwd

def compile_pattern(self, pattern):
            return re.compile(fnmatch.translate(pattern)).fullmatch

class FakePath(pathlib.Path):
    """Replacement for pathlib.Path. Reimplement some methods to use
    fake filesystem. The rest of the methods work as they are, as they will
    use the fake accessor.
    New in pyfakefs 3.0.
    """

# the underlying fake filesystem
    filesystem = None

def __new__(cls, *args, **kwargs):
        """Creates the correct subclass based on OS."""
        if cls is FakePathlibModule.Path:
            cls = (
                FakePathlibModule.WindowsPath
                if cls.filesystem.is_windows_fs
                else FakePathlibModule.PosixPath
            )
        if sys.version_info < (3, 12):
            return cls._from_parts(args)  # pytype: disable=attribute-error
        else:
            return object.__new__(cls)

if sys.version_info[:2] == (3, 10):
        # Overwritten class methods to call _init to set the fake accessor,
        # which is not done in Python 3.10, and not needed from Python 3.11 on
        @classmethod
        def _from_parts(cls, args):
            self = object.__new__(cls)
            self._init()
            drv, root, parts = self._parse_args(args)  # pytype: disable=attribute-error
            self._drv = drv
            self._root = root
            self._parts = parts
            return self

@classmethod
        def _from_parsed_parts(cls, drv, root, parts):
            self = object.__new__(cls)
            self._drv = drv
            self._root = root
            self._parts = parts
            self._init()
            return self

if sys.version_info < (3, 11):

def _init(self, template=None):
            """Initializer called from base class."""
            # only needed until Python 3.10
            self._accessor = _fake_accessor
            # only needed until Python 3.8
            self._closed = False

def _path(self):
        """Returns the underlying path string as used by the fake
        filesystem.
        """
        return str(self)

@classmethod
    def cwd(cls):
        """Return a new path pointing to the current working directory
        (as returned by os.getcwd()).
        """
        return cls(cls.filesystem.cwd)

if sys.version_info < (3, 12):  # in 3.12, we can use the pathlib implementation

def resolve(self, strict=None):
            """Make the path absolute, resolving all symlinks on the way and also
            normalizing it (for example turning slashes into backslashes
            under Windows).

Args:
                strict: If False (default) no exception is raised if the path
                    does not exist.
                    New in Python 3.6.

Raises:
                OSError: if the path doesn't exist (strict=True or Python < 3.6)
            """
            if sys.version_info >= (3, 6):
                if strict is None:
                    strict = False
            else:
                if strict is not None:
                    raise TypeError(
                        "resolve() got an unexpected keyword argument 'strict'"
                    )
                strict = True
            self._raise_on_closed()
            path = self._flavour.resolve(
                self, strict=strict
            )  # pytype: disable=attribute-error
            if path is None:
                self.stat()
                path = str(self.absolute())
            path = self.filesystem.absnormpath(path)
            return FakePath(path)

def open(self, mode="r", buffering=-1, encoding=None, errors=None, newline=None):
        """Open the file pointed by this path and return a fake file object.

Raises:
            OSError: if the target object is a directory, the path is invalid
                or permission is denied.
        """
        self._raise_on_closed()
        return FakeFileOpen(self.filesystem)(
            self._path(), mode, buffering, encoding, errors, newline
        )

def read_bytes(self):
        """Open the fake file in bytes mode, read it, and close the file.

Raises:
            OSError: if the target object is a directory, the path is
                invalid or permission is denied.
        """
        with FakeFileOpen(self.filesystem)(
            self._path(), mode="rb"
        ) as f:  # pytype: disable=attribute-error
            return f.read()

def read_text(self, encoding=None, errors=None):
        """
        Open the fake file in text mode, read it, and close the file.
        """
        with FakeFileOpen(self.filesystem)(  # pytype: disable=attribute-error
            self._path(), mode="r", encoding=encoding, errors=errors
        ) as f:
            return f.read()

def write_bytes(self, data):
        """Open the fake file in bytes mode, write to it, and close the file.
        Args:
            data: the bytes to be written
        Raises:
            OSError: if the target object is a directory, the path is
                invalid or permission is denied.
        """
        # type-check for the buffer interface before truncating the file
        view = memoryview(data)
        with FakeFileOpen(self.filesystem)(
            self._path(), mode="wb"
        ) as f:  # pytype: disable=attribute-error
            return f.write(view)

def write_text(self, data, encoding=None, errors=None, newline=None):
        """Open the fake file in text mode, write to it, and close
        the file.

Args:
            data: the string to be written
            encoding: the encoding used for the string; if not given, the
                default locale encoding is used
            errors: (str) Defines how encoding errors are handled.
            newline: Controls universal newlines, passed to stream object.
                New in Python 3.10.
        Raises:
            TypeError: if data is not of type 'str'.
            OSError: if the target object is a directory, the path is
                invalid or permission is denied.
        """
        if not isinstance(data, str):
            raise TypeError("data must be str, not %s" % data.__class__.__name__)
        if newline is not None and sys.version_info < (3, 10):
            raise TypeError(
                "write_text() got an unexpected " "keyword argument 'newline'"
            )
        with FakeFileOpen(self.filesystem)(  # pytype: disable=attribute-error
            self._path(),
            mode="w",
            encoding=encoding,
            errors=errors,
            newline=newline,
        ) as f:
            return f.write(data)

@classmethod
    def home(cls):
        """Return a new path pointing to the user's home directory (as
        returned by os.path.expanduser('~')).
        """
        home = os.path.expanduser("~")
        if cls.filesystem.is_windows_fs != (os.name == "nt"):
            username = os.path.split(home)[1]
            if cls.filesystem.is_windows_fs:
                home = os.path.join("C:", "Users", username)
            else:
                home = os.path.join("home", username)
            if not cls.filesystem.exists(home):
                cls.filesystem.create_dir(home)
        return cls(home.replace(os.sep, cls.filesystem.path_separator))

def samefile(self, other_path):
        """Return whether other_path is the same or not as this file
        (as returned by os.path.samefile()).

Args:
            other_path: A path object or string of the file object
            to be compared with

Raises:
            OSError: if the filesystem object doesn't exist.
        """
        st = self.stat()
        try:
            other_st = other_path.stat()
        except AttributeError:
            other_st = self.filesystem.stat(other_path)
        return st.st_ino == other_st.st_ino and st.st_dev == other_st.st_dev

def expanduser(self):
        """Return a new path with expanded ~ and ~user constructs
        (as returned by os.path.expanduser)
        """
        return FakePath(
            os.path.expanduser(self._path()).replace(
                os.path.sep, self.filesystem.path_separator
            )
        )

def _raise_on_closed(self):
        if sys.version_info < (3, 9) and self._closed:
            self._raise_closed()

def touch(self, mode=0o666, exist_ok=True):
        """Create a fake file for the path with the given access mode,
        if it doesn't exist.

Args:
            mode: the file mode for the file if it does not exist
            exist_ok: if the file already exists and this is True, nothing
                happens, otherwise FileExistError is raised

Raises:
            FileExistsError: if the file exists and exits_ok is False.
        """
        self._raise_on_closed()
        if self.exists():
            if exist_ok:
                self.filesystem.utime(self._path(), times=None)
            else:
                self.filesystem.raise_os_error(errno.EEXIST, self._path())
        else:
            fake_file = self.open("w")
            fake_file.close()
            self.chmod(mode)

if sys.version_info >= (3, 12):
        """These are reimplemented for now because the original implementation
        checks the flavour against ntpath/posixpath.
        """

def is_absolute(self):
            if self.filesystem.is_windows_fs:
                return self.drive and self.root
            return os.path.isabs(self._path())

def is_reserved(self):
            if not self.filesystem.is_windows_fs or not self._tail:
                return False
            if self._tail[0].startswith("\\\\"):
                # UNC paths are never reserved.
                return False
            name = self._tail[-1].partition(".")[0].partition(":")[0].rstrip(" ")
            return name.upper() in pathlib._WIN_RESERVED_NAMES

class FakePathlibModule:
    """Uses FakeFilesystem to provide a fake pathlib module replacement.
    Can be used to replace both the standard `pathlib` module and the
    `pathlib2` package available on PyPi.

You need a fake_filesystem to use this:
    `filesystem = fake_filesystem.FakeFilesystem()`
    `fake_pathlib_module = fake_filesystem.FakePathlibModule(filesystem)`
    """

def __init__(self, filesystem):
        """
        Initializes the module with the given filesystem.

Args:
            filesystem: FakeFilesystem used to provide file system information
        """
        init_module(filesystem)
        self._pathlib_module = pathlib

class PurePosixPath(PurePath):
        """A subclass of PurePath, that represents non-Windows filesystem
        paths"""

__slots__ = ()

class PureWindowsPath(PurePath):
        """A subclass of PurePath, that represents Windows filesystem paths"""

__slots__ = ()

class WindowsPath(FakePath, PureWindowsPath):
        """A subclass of Path and PureWindowsPath that represents
        concrete Windows filesystem paths.
        """

__slots__ = ()

def owner(self):
            raise NotImplementedError("Path.owner() is unsupported on this system")

def group(self):
            raise NotImplementedError("Path.group() is unsupported on this system")

def is_mount(self):
            raise NotImplementedError("Path.is_mount() is unsupported on this system")

class PosixPath(FakePath, PurePosixPath):
        """A subclass of Path and PurePosixPath that represents
        concrete non-Windows filesystem paths.
        """

__slots__ = ()

def owner(self):
            """Return the username of the file owner.
            It is assumed that `st_uid` is related to a real user,
            otherwise `KeyError` is raised.
            """
            import pwd

return pwd.getpwuid(self.stat().st_uid).pw_name

def group(self):
            """Return the group name of the file group.
            It is assumed that `st_gid` is related to a real group,
            otherwise `KeyError` is raised.
            """
            import grp

return grp.getgrgid(self.stat().st_gid).gr_name

Path = FakePath

def __getattr__(self, name):
        """Forwards any unfaked calls to the standard pathlib module."""
        return getattr(self._pathlib_module, name)

class FakePathlibPathModule:
    """Patches `pathlib.Path` by passing all calls to FakePathlibModule."""

fake_pathlib = None

def __init__(self, filesystem=None):
        if self.fake_pathlib is None:
            self.__class__.fake_pathlib = FakePathlibModule(filesystem)

def __call__(self, *args, **kwargs):
        return self.fake_pathlib.Path(*args, **kwargs)

def __getattr__(self, name):
        return getattr(self.fake_pathlib.Path, name)

@classmethod
    def __instancecheck__(cls, instance):
        # fake the inheritance to pass isinstance checks - see #666
        return isinstance(instance, PurePath)

class RealPath(pathlib.Path):
    """Replacement for `pathlib.Path` if it shall not be faked.
    Needed because `Path` in `pathlib` is always faked, even if `pathlib`
    itself is not.
    """

if sys.version_info < (3, 12):
        _flavour = (
            pathlib._WindowsFlavour()  # type:ignore
            if os.name == "nt"
            else pathlib._PosixFlavour()  # type:ignore
        )  # type:ignore
    else:
        _flavour = ntpath if os.name == "nt" else posixpath

def __new__(cls, *args, **kwargs):
        """Creates the correct subclass based on OS."""
        if cls is RealPathlibModule.Path:
            cls = (
                RealPathlibModule.WindowsPath  # pytype: disable=attribute-error
                if os.name == "nt"
                else RealPathlibModule.PosixPath  # pytype: disable=attribute-error
            )
        if sys.version_info < (3, 12):
            return cls._from_parts(args)  # pytype: disable=attribute-error
        else:
            return object.__new__(cls)

if sys.version_info > (3, 10):

def with_original_os(f: Callable) -> Callable:
        """Decorator used for real pathlib Path methods to ensure that
        real os functions instead of faked ones are used."""

@functools.wraps(f)
        def wrapped(*args, **kwargs):
            with use_original_os():
                return f(*args, **kwargs)

return wrapped

for name, fn in inspect.getmembers(RealPath, inspect.isfunction):
        if not name.startswith("__"):
            setattr(RealPath, name, with_original_os(fn))

class RealPathlibPathModule:
    """Patches `pathlib.Path` by passing all calls to RealPathlibModule."""

real_pathlib = None

@classmethod
    def __instancecheck__(cls, instance):
        # as we cannot derive from pathlib.Path, we fake
        # the inheritance to pass isinstance checks - see #666
        return isinstance(instance, PurePath)

def __init__(self):
        if self.real_pathlib is None:
            self.__class__.real_pathlib = RealPathlibModule()

def __call__(self, *args, **kwargs):
        return RealPath(*args, **kwargs)

def __getattr__(self, name):
        return getattr(self.real_pathlib.Path, name)

class RealPathlibModule:
    """Used to replace `pathlib` for skipped modules.
    As the original `pathlib` is always patched to use the fake path,
    we need to provide a version which does not do this.
    """

def __init__(self):
        self._pathlib_module = pathlib

class PurePosixPath(PurePath):
        """A subclass of PurePath, that represents Posix filesystem paths"""

__slots__ = ()

class PureWindowsPath(PurePath):
        """A subclass of PurePath, that represents Windows filesystem paths"""

__slots__ = ()

if sys.platform == "win32":

class WindowsPath(RealPath, PureWindowsPath):
            """A subclass of Path and PureWindowsPath that represents
            concrete Windows filesystem paths.
            """

__slots__ = ()

else:

class PosixPath(RealPath, PurePosixPath):
            """A subclass of Path and PurePosixPath that represents
            concrete non-Windows filesystem paths.
            """

__slots__ = ()

Path = RealPath

def __getattr__(self, name):
        """Forwards any unfaked calls to the standard pathlib module."""
        return getattr(self._pathlib_module, name)

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