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Diffstat (limited to '.venv/lib/python3.12/site-packages/anyio/_core/_tempfile.py')
| -rw-r--r-- | .venv/lib/python3.12/site-packages/anyio/_core/_tempfile.py | 616 |
1 files changed, 616 insertions, 0 deletions
diff --git a/.venv/lib/python3.12/site-packages/anyio/_core/_tempfile.py b/.venv/lib/python3.12/site-packages/anyio/_core/_tempfile.py new file mode 100644 index 00000000..26d70eca --- /dev/null +++ b/.venv/lib/python3.12/site-packages/anyio/_core/_tempfile.py @@ -0,0 +1,616 @@ +from __future__ import annotations + +import os +import sys +import tempfile +from collections.abc import Iterable +from io import BytesIO, TextIOWrapper +from types import TracebackType +from typing import ( + TYPE_CHECKING, + Any, + AnyStr, + Generic, + overload, +) + +from .. import to_thread +from .._core._fileio import AsyncFile +from ..lowlevel import checkpoint_if_cancelled + +if TYPE_CHECKING: + from _typeshed import OpenBinaryMode, OpenTextMode, ReadableBuffer, WriteableBuffer + + +class TemporaryFile(Generic[AnyStr]): + """ + An asynchronous temporary file that is automatically created and cleaned up. + + This class provides an asynchronous context manager interface to a temporary file. + The file is created using Python's standard `tempfile.TemporaryFile` function in a + background thread, and is wrapped as an asynchronous file using `AsyncFile`. + + :param mode: The mode in which the file is opened. Defaults to "w+b". + :param buffering: The buffering policy (-1 means the default buffering). + :param encoding: The encoding used to decode or encode the file. Only applicable in + text mode. + :param newline: Controls how universal newlines mode works (only applicable in text + mode). + :param suffix: The suffix for the temporary file name. + :param prefix: The prefix for the temporary file name. + :param dir: The directory in which the temporary file is created. + :param errors: The error handling scheme used for encoding/decoding errors. + """ + + _async_file: AsyncFile[AnyStr] + + @overload + def __init__( + self: TemporaryFile[bytes], + mode: OpenBinaryMode = ..., + buffering: int = ..., + encoding: str | None = ..., + newline: str | None = ..., + suffix: str | None = ..., + prefix: str | None = ..., + dir: str | None = ..., + *, + errors: str | None = ..., + ): ... + @overload + def __init__( + self: TemporaryFile[str], + mode: OpenTextMode, + buffering: int = ..., + encoding: str | None = ..., + newline: str | None = ..., + suffix: str | None = ..., + prefix: str | None = ..., + dir: str | None = ..., + *, + errors: str | None = ..., + ): ... + + def __init__( + self, + mode: OpenTextMode | OpenBinaryMode = "w+b", + buffering: int = -1, + encoding: str | None = None, + newline: str | None = None, + suffix: str | None = None, + prefix: str | None = None, + dir: str | None = None, + *, + errors: str | None = None, + ) -> None: + self.mode = mode + self.buffering = buffering + self.encoding = encoding + self.newline = newline + self.suffix: str | None = suffix + self.prefix: str | None = prefix + self.dir: str | None = dir + self.errors = errors + + async def __aenter__(self) -> AsyncFile[AnyStr]: + fp = await to_thread.run_sync( + lambda: tempfile.TemporaryFile( + self.mode, + self.buffering, + self.encoding, + self.newline, + self.suffix, + self.prefix, + self.dir, + errors=self.errors, + ) + ) + self._async_file = AsyncFile(fp) + return self._async_file + + async def __aexit__( + self, + exc_type: type[BaseException] | None, + exc_value: BaseException | None, + traceback: TracebackType | None, + ) -> None: + await self._async_file.aclose() + + +class NamedTemporaryFile(Generic[AnyStr]): + """ + An asynchronous named temporary file that is automatically created and cleaned up. + + This class provides an asynchronous context manager for a temporary file with a + visible name in the file system. It uses Python's standard + :func:`~tempfile.NamedTemporaryFile` function and wraps the file object with + :class:`AsyncFile` for asynchronous operations. + + :param mode: The mode in which the file is opened. Defaults to "w+b". + :param buffering: The buffering policy (-1 means the default buffering). + :param encoding: The encoding used to decode or encode the file. Only applicable in + text mode. + :param newline: Controls how universal newlines mode works (only applicable in text + mode). + :param suffix: The suffix for the temporary file name. + :param prefix: The prefix for the temporary file name. + :param dir: The directory in which the temporary file is created. + :param delete: Whether to delete the file when it is closed. + :param errors: The error handling scheme used for encoding/decoding errors. + :param delete_on_close: (Python 3.12+) Whether to delete the file on close. + """ + + _async_file: AsyncFile[AnyStr] + + @overload + def __init__( + self: NamedTemporaryFile[bytes], + mode: OpenBinaryMode = ..., + buffering: int = ..., + encoding: str | None = ..., + newline: str | None = ..., + suffix: str | None = ..., + prefix: str | None = ..., + dir: str | None = ..., + delete: bool = ..., + *, + errors: str | None = ..., + delete_on_close: bool = ..., + ): ... + @overload + def __init__( + self: NamedTemporaryFile[str], + mode: OpenTextMode, + buffering: int = ..., + encoding: str | None = ..., + newline: str | None = ..., + suffix: str | None = ..., + prefix: str | None = ..., + dir: str | None = ..., + delete: bool = ..., + *, + errors: str | None = ..., + delete_on_close: bool = ..., + ): ... + + def __init__( + self, + mode: OpenBinaryMode | OpenTextMode = "w+b", + buffering: int = -1, + encoding: str | None = None, + newline: str | None = None, + suffix: str | None = None, + prefix: str | None = None, + dir: str | None = None, + delete: bool = True, + *, + errors: str | None = None, + delete_on_close: bool = True, + ) -> None: + self._params: dict[str, Any] = { + "mode": mode, + "buffering": buffering, + "encoding": encoding, + "newline": newline, + "suffix": suffix, + "prefix": prefix, + "dir": dir, + "delete": delete, + "errors": errors, + } + if sys.version_info >= (3, 12): + self._params["delete_on_close"] = delete_on_close + + async def __aenter__(self) -> AsyncFile[AnyStr]: + fp = await to_thread.run_sync( + lambda: tempfile.NamedTemporaryFile(**self._params) + ) + self._async_file = AsyncFile(fp) + return self._async_file + + async def __aexit__( + self, + exc_type: type[BaseException] | None, + exc_value: BaseException | None, + traceback: TracebackType | None, + ) -> None: + await self._async_file.aclose() + + +class SpooledTemporaryFile(AsyncFile[AnyStr]): + """ + An asynchronous spooled temporary file that starts in memory and is spooled to disk. + + This class provides an asynchronous interface to a spooled temporary file, much like + Python's standard :class:`~tempfile.SpooledTemporaryFile`. It supports asynchronous + write operations and provides a method to force a rollover to disk. + + :param max_size: Maximum size in bytes before the file is rolled over to disk. + :param mode: The mode in which the file is opened. Defaults to "w+b". + :param buffering: The buffering policy (-1 means the default buffering). + :param encoding: The encoding used to decode or encode the file (text mode only). + :param newline: Controls how universal newlines mode works (text mode only). + :param suffix: The suffix for the temporary file name. + :param prefix: The prefix for the temporary file name. + :param dir: The directory in which the temporary file is created. + :param errors: The error handling scheme used for encoding/decoding errors. + """ + + _rolled: bool = False + + @overload + def __init__( + self: SpooledTemporaryFile[bytes], + max_size: int = ..., + mode: OpenBinaryMode = ..., + buffering: int = ..., + encoding: str | None = ..., + newline: str | None = ..., + suffix: str | None = ..., + prefix: str | None = ..., + dir: str | None = ..., + *, + errors: str | None = ..., + ): ... + @overload + def __init__( + self: SpooledTemporaryFile[str], + max_size: int = ..., + mode: OpenTextMode = ..., + buffering: int = ..., + encoding: str | None = ..., + newline: str | None = ..., + suffix: str | None = ..., + prefix: str | None = ..., + dir: str | None = ..., + *, + errors: str | None = ..., + ): ... + + def __init__( + self, + max_size: int = 0, + mode: OpenBinaryMode | OpenTextMode = "w+b", + buffering: int = -1, + encoding: str | None = None, + newline: str | None = None, + suffix: str | None = None, + prefix: str | None = None, + dir: str | None = None, + *, + errors: str | None = None, + ) -> None: + self._tempfile_params: dict[str, Any] = { + "mode": mode, + "buffering": buffering, + "encoding": encoding, + "newline": newline, + "suffix": suffix, + "prefix": prefix, + "dir": dir, + "errors": errors, + } + self._max_size = max_size + if "b" in mode: + super().__init__(BytesIO()) # type: ignore[arg-type] + else: + super().__init__( + TextIOWrapper( # type: ignore[arg-type] + BytesIO(), + encoding=encoding, + errors=errors, + newline=newline, + write_through=True, + ) + ) + + async def aclose(self) -> None: + if not self._rolled: + self._fp.close() + return + + await super().aclose() + + async def _check(self) -> None: + if self._rolled or self._fp.tell() < self._max_size: + return + + await self.rollover() + + async def rollover(self) -> None: + if self._rolled: + return + + self._rolled = True + buffer = self._fp + buffer.seek(0) + self._fp = await to_thread.run_sync( + lambda: tempfile.TemporaryFile(**self._tempfile_params) + ) + await self.write(buffer.read()) + buffer.close() + + @property + def closed(self) -> bool: + return self._fp.closed + + async def read(self, size: int = -1) -> AnyStr: + if not self._rolled: + await checkpoint_if_cancelled() + return self._fp.read(size) + + return await super().read(size) # type: ignore[return-value] + + async def read1(self: SpooledTemporaryFile[bytes], size: int = -1) -> bytes: + if not self._rolled: + await checkpoint_if_cancelled() + return self._fp.read1(size) + + return await super().read1(size) + + async def readline(self) -> AnyStr: + if not self._rolled: + await checkpoint_if_cancelled() + return self._fp.readline() + + return await super().readline() # type: ignore[return-value] + + async def readlines(self) -> list[AnyStr]: + if not self._rolled: + await checkpoint_if_cancelled() + return self._fp.readlines() + + return await super().readlines() # type: ignore[return-value] + + async def readinto(self: SpooledTemporaryFile[bytes], b: WriteableBuffer) -> int: + if not self._rolled: + await checkpoint_if_cancelled() + self._fp.readinto(b) + + return await super().readinto(b) + + async def readinto1(self: SpooledTemporaryFile[bytes], b: WriteableBuffer) -> int: + if not self._rolled: + await checkpoint_if_cancelled() + self._fp.readinto(b) + + return await super().readinto1(b) + + async def seek(self, offset: int, whence: int | None = os.SEEK_SET) -> int: + if not self._rolled: + await checkpoint_if_cancelled() + return self._fp.seek(offset, whence) + + return await super().seek(offset, whence) + + async def tell(self) -> int: + if not self._rolled: + await checkpoint_if_cancelled() + return self._fp.tell() + + return await super().tell() + + async def truncate(self, size: int | None = None) -> int: + if not self._rolled: + await checkpoint_if_cancelled() + return self._fp.truncate(size) + + return await super().truncate(size) + + @overload + async def write(self: SpooledTemporaryFile[bytes], b: ReadableBuffer) -> int: ... + @overload + async def write(self: SpooledTemporaryFile[str], b: str) -> int: ... + + async def write(self, b: ReadableBuffer | str) -> int: + """ + Asynchronously write data to the spooled temporary file. + + If the file has not yet been rolled over, the data is written synchronously, + and a rollover is triggered if the size exceeds the maximum size. + + :param s: The data to write. + :return: The number of bytes written. + :raises RuntimeError: If the underlying file is not initialized. + + """ + if not self._rolled: + await checkpoint_if_cancelled() + result = self._fp.write(b) + await self._check() + return result + + return await super().write(b) # type: ignore[misc] + + @overload + async def writelines( + self: SpooledTemporaryFile[bytes], lines: Iterable[ReadableBuffer] + ) -> None: ... + @overload + async def writelines( + self: SpooledTemporaryFile[str], lines: Iterable[str] + ) -> None: ... + + async def writelines(self, lines: Iterable[str] | Iterable[ReadableBuffer]) -> None: + """ + Asynchronously write a list of lines to the spooled temporary file. + + If the file has not yet been rolled over, the lines are written synchronously, + and a rollover is triggered if the size exceeds the maximum size. + + :param lines: An iterable of lines to write. + :raises RuntimeError: If the underlying file is not initialized. + + """ + if not self._rolled: + await checkpoint_if_cancelled() + result = self._fp.writelines(lines) + await self._check() + return result + + return await super().writelines(lines) # type: ignore[misc] + + +class TemporaryDirectory(Generic[AnyStr]): + """ + An asynchronous temporary directory that is created and cleaned up automatically. + + This class provides an asynchronous context manager for creating a temporary + directory. It wraps Python's standard :class:`~tempfile.TemporaryDirectory` to + perform directory creation and cleanup operations in a background thread. + + :param suffix: Suffix to be added to the temporary directory name. + :param prefix: Prefix to be added to the temporary directory name. + :param dir: The parent directory where the temporary directory is created. + :param ignore_cleanup_errors: Whether to ignore errors during cleanup + (Python 3.10+). + :param delete: Whether to delete the directory upon closing (Python 3.12+). + """ + + def __init__( + self, + suffix: AnyStr | None = None, + prefix: AnyStr | None = None, + dir: AnyStr | None = None, + *, + ignore_cleanup_errors: bool = False, + delete: bool = True, + ) -> None: + self.suffix: AnyStr | None = suffix + self.prefix: AnyStr | None = prefix + self.dir: AnyStr | None = dir + self.ignore_cleanup_errors = ignore_cleanup_errors + self.delete = delete + + self._tempdir: tempfile.TemporaryDirectory | None = None + + async def __aenter__(self) -> str: + params: dict[str, Any] = { + "suffix": self.suffix, + "prefix": self.prefix, + "dir": self.dir, + } + if sys.version_info >= (3, 10): + params["ignore_cleanup_errors"] = self.ignore_cleanup_errors + + if sys.version_info >= (3, 12): + params["delete"] = self.delete + + self._tempdir = await to_thread.run_sync( + lambda: tempfile.TemporaryDirectory(**params) + ) + return await to_thread.run_sync(self._tempdir.__enter__) + + async def __aexit__( + self, + exc_type: type[BaseException] | None, + exc_value: BaseException | None, + traceback: TracebackType | None, + ) -> None: + if self._tempdir is not None: + await to_thread.run_sync( + self._tempdir.__exit__, exc_type, exc_value, traceback + ) + + async def cleanup(self) -> None: + if self._tempdir is not None: + await to_thread.run_sync(self._tempdir.cleanup) + + +@overload +async def mkstemp( + suffix: str | None = None, + prefix: str | None = None, + dir: str | None = None, + text: bool = False, +) -> tuple[int, str]: ... + + +@overload +async def mkstemp( + suffix: bytes | None = None, + prefix: bytes | None = None, + dir: bytes | None = None, + text: bool = False, +) -> tuple[int, bytes]: ... + + +async def mkstemp( + suffix: AnyStr | None = None, + prefix: AnyStr | None = None, + dir: AnyStr | None = None, + text: bool = False, +) -> tuple[int, str | bytes]: + """ + Asynchronously create a temporary file and return an OS-level handle and the file + name. + + This function wraps `tempfile.mkstemp` and executes it in a background thread. + + :param suffix: Suffix to be added to the file name. + :param prefix: Prefix to be added to the file name. + :param dir: Directory in which the temporary file is created. + :param text: Whether the file is opened in text mode. + :return: A tuple containing the file descriptor and the file name. + + """ + return await to_thread.run_sync(tempfile.mkstemp, suffix, prefix, dir, text) + + +@overload +async def mkdtemp( + suffix: str | None = None, + prefix: str | None = None, + dir: str | None = None, +) -> str: ... + + +@overload +async def mkdtemp( + suffix: bytes | None = None, + prefix: bytes | None = None, + dir: bytes | None = None, +) -> bytes: ... + + +async def mkdtemp( + suffix: AnyStr | None = None, + prefix: AnyStr | None = None, + dir: AnyStr | None = None, +) -> str | bytes: + """ + Asynchronously create a temporary directory and return its path. + + This function wraps `tempfile.mkdtemp` and executes it in a background thread. + + :param suffix: Suffix to be added to the directory name. + :param prefix: Prefix to be added to the directory name. + :param dir: Parent directory where the temporary directory is created. + :return: The path of the created temporary directory. + + """ + return await to_thread.run_sync(tempfile.mkdtemp, suffix, prefix, dir) + + +async def gettempdir() -> str: + """ + Asynchronously return the name of the directory used for temporary files. + + This function wraps `tempfile.gettempdir` and executes it in a background thread. + + :return: The path of the temporary directory as a string. + + """ + return await to_thread.run_sync(tempfile.gettempdir) + + +async def gettempdirb() -> bytes: + """ + Asynchronously return the name of the directory used for temporary files in bytes. + + This function wraps `tempfile.gettempdirb` and executes it in a background thread. + + :return: The path of the temporary directory as bytes. + + """ + return await to_thread.run_sync(tempfile.gettempdirb) |