93 lines
3.0 KiB
Python
93 lines
3.0 KiB
Python
from __future__ import annotations
|
|
|
|
import typing
|
|
from pathlib import PurePosixPath
|
|
|
|
from ._base import FS
|
|
from ._errors import DirectoryExpected, ResourceNotFound
|
|
|
|
if typing.TYPE_CHECKING:
|
|
from collections.abc import Collection
|
|
from typing import IO, Any
|
|
|
|
from ._info import Info
|
|
|
|
|
|
class SubFS(FS):
|
|
"""Maps a sub-directory of another filesystem."""
|
|
|
|
def __init__(self, parent: FS, sub_path: str):
|
|
super().__init__()
|
|
self._parent = parent
|
|
self._prefix = PurePosixPath(sub_path).as_posix().rstrip("/")
|
|
if not parent.exists(self._prefix):
|
|
raise ResourceNotFound(f"No such file or directory: {sub_path!r}")
|
|
elif not parent.isdir(self._prefix):
|
|
raise DirectoryExpected(f"{sub_path!r} is not a directory")
|
|
|
|
def delegate_fs(self):
|
|
return self._parent
|
|
|
|
def _full(self, rel: str) -> str:
|
|
self.check()
|
|
return f"{self._prefix}/{PurePosixPath(rel).as_posix()}".lstrip("/")
|
|
|
|
def open(self, path: str, mode: str = "rb", **kwargs) -> IO[Any]:
|
|
return self._parent.open(self._full(path), mode, **kwargs)
|
|
|
|
def exists(self, path: str) -> bool:
|
|
return self._parent.exists(self._full(path))
|
|
|
|
def isdir(self, path: str) -> bool:
|
|
return self._parent.isdir(self._full(path))
|
|
|
|
def isfile(self, path: str) -> bool:
|
|
return self._parent.isfile(self._full(path))
|
|
|
|
def listdir(self, path: str) -> list[str]:
|
|
return self._parent.listdir(self._full(path))
|
|
|
|
def makedir(self, path: str, recreate: bool = False):
|
|
return self._parent.makedir(self._full(path), recreate=recreate)
|
|
|
|
def makedirs(self, path: str, recreate: bool = False):
|
|
return self._parent.makedirs(self._full(path), recreate=recreate)
|
|
|
|
def getinfo(self, path: str, namespaces: Collection[str] | None = None) -> Info:
|
|
return self._parent.getinfo(self._full(path), namespaces=namespaces)
|
|
|
|
def remove(self, path: str):
|
|
return self._parent.remove(self._full(path))
|
|
|
|
def removedir(self, path: str):
|
|
return self._parent.removedir(self._full(path))
|
|
|
|
def removetree(self, path: str):
|
|
return self._parent.removetree(self._full(path))
|
|
|
|
def movedir(self, src: str, dst: str, create: bool = False):
|
|
self._parent.movedir(self._full(src), self._full(dst), create=create)
|
|
|
|
def getsyspath(self, path: str) -> str:
|
|
return self._parent.getsyspath(self._full(path))
|
|
|
|
def readbytes(self, path: str) -> bytes:
|
|
return self._parent.readbytes(self._full(path))
|
|
|
|
def writebytes(self, path: str, data: bytes):
|
|
self._parent.writebytes(self._full(path), data)
|
|
|
|
def __repr__(self) -> str:
|
|
return f"{self.__class__.__name__}({self._parent!r}, {self._prefix!r})"
|
|
|
|
def __str__(self) -> str:
|
|
return f"{self._parent}/{self._prefix}"
|
|
|
|
|
|
class ClosingSubFS(SubFS):
|
|
"""Like SubFS, but auto-closes the parent filesystem when closed."""
|
|
|
|
def close(self):
|
|
super().close()
|
|
self._parent.close()
|