diff options
Diffstat (limited to 'venv/lib/python3.11/site-packages/anyio/streams/file.py')
-rw-r--r-- | venv/lib/python3.11/site-packages/anyio/streams/file.py | 148 |
1 files changed, 0 insertions, 148 deletions
diff --git a/venv/lib/python3.11/site-packages/anyio/streams/file.py b/venv/lib/python3.11/site-packages/anyio/streams/file.py deleted file mode 100644 index f492464..0000000 --- a/venv/lib/python3.11/site-packages/anyio/streams/file.py +++ /dev/null @@ -1,148 +0,0 @@ -from __future__ import annotations - -from collections.abc import Callable, Mapping -from io import SEEK_SET, UnsupportedOperation -from os import PathLike -from pathlib import Path -from typing import Any, BinaryIO, cast - -from .. import ( - BrokenResourceError, - ClosedResourceError, - EndOfStream, - TypedAttributeSet, - to_thread, - typed_attribute, -) -from ..abc import ByteReceiveStream, ByteSendStream - - -class FileStreamAttribute(TypedAttributeSet): - #: the open file descriptor - file: BinaryIO = typed_attribute() - #: the path of the file on the file system, if available (file must be a real file) - path: Path = typed_attribute() - #: the file number, if available (file must be a real file or a TTY) - fileno: int = typed_attribute() - - -class _BaseFileStream: - def __init__(self, file: BinaryIO): - self._file = file - - async def aclose(self) -> None: - await to_thread.run_sync(self._file.close) - - @property - def extra_attributes(self) -> Mapping[Any, Callable[[], Any]]: - attributes: dict[Any, Callable[[], Any]] = { - FileStreamAttribute.file: lambda: self._file, - } - - if hasattr(self._file, "name"): - attributes[FileStreamAttribute.path] = lambda: Path(self._file.name) - - try: - self._file.fileno() - except UnsupportedOperation: - pass - else: - attributes[FileStreamAttribute.fileno] = lambda: self._file.fileno() - - return attributes - - -class FileReadStream(_BaseFileStream, ByteReceiveStream): - """ - A byte stream that reads from a file in the file system. - - :param file: a file that has been opened for reading in binary mode - - .. versionadded:: 3.0 - """ - - @classmethod - async def from_path(cls, path: str | PathLike[str]) -> FileReadStream: - """ - Create a file read stream by opening the given file. - - :param path: path of the file to read from - - """ - file = await to_thread.run_sync(Path(path).open, "rb") - return cls(cast(BinaryIO, file)) - - async def receive(self, max_bytes: int = 65536) -> bytes: - try: - data = await to_thread.run_sync(self._file.read, max_bytes) - except ValueError: - raise ClosedResourceError from None - except OSError as exc: - raise BrokenResourceError from exc - - if data: - return data - else: - raise EndOfStream - - async def seek(self, position: int, whence: int = SEEK_SET) -> int: - """ - Seek the file to the given position. - - .. seealso:: :meth:`io.IOBase.seek` - - .. note:: Not all file descriptors are seekable. - - :param position: position to seek the file to - :param whence: controls how ``position`` is interpreted - :return: the new absolute position - :raises OSError: if the file is not seekable - - """ - return await to_thread.run_sync(self._file.seek, position, whence) - - async def tell(self) -> int: - """ - Return the current stream position. - - .. note:: Not all file descriptors are seekable. - - :return: the current absolute position - :raises OSError: if the file is not seekable - - """ - return await to_thread.run_sync(self._file.tell) - - -class FileWriteStream(_BaseFileStream, ByteSendStream): - """ - A byte stream that writes to a file in the file system. - - :param file: a file that has been opened for writing in binary mode - - .. versionadded:: 3.0 - """ - - @classmethod - async def from_path( - cls, path: str | PathLike[str], append: bool = False - ) -> FileWriteStream: - """ - Create a file write stream by opening the given file for writing. - - :param path: path of the file to write to - :param append: if ``True``, open the file for appending; if ``False``, any - existing file at the given path will be truncated - - """ - mode = "ab" if append else "wb" - file = await to_thread.run_sync(Path(path).open, mode) - return cls(cast(BinaryIO, file)) - - async def send(self, item: bytes) -> None: - try: - await to_thread.run_sync(self._file.write, item) - except ValueError: - raise ClosedResourceError from None - except OSError as exc: - raise BrokenResourceError from exc |