3.14: PEP-784 compression except zstd (#13992)

stdlib/compression/_common/_streams.pyi

@@ -0,0 +1,25 @@
+from _typeshed import Incomplete, WriteableBuffer
+from collections.abc import Callable
+from io import DEFAULT_BUFFER_SIZE, BufferedIOBase, RawIOBase
+from typing import Any, Protocol
+
+BUFFER_SIZE = DEFAULT_BUFFER_SIZE
+
+class _Reader(Protocol):
+    def read(self, n: int, /) -> bytes: ...
+    def seekable(self) -> bool: ...
+    def seek(self, n: int, /) -> Any: ...
+
+class BaseStream(BufferedIOBase): ...
+
+class DecompressReader(RawIOBase):
+    def __init__(
+        self,
+        fp: _Reader,
+        decomp_factory: Callable[..., Incomplete],  # Consider backporting changes to _compression
+        trailing_error: type[Exception] | tuple[type[Exception], ...] = (),
+        **decomp_args: Any,  # These are passed to decomp_factory.
+    ) -> None: ...
+    def readinto(self, b: WriteableBuffer) -> int: ...
+    def read(self, size: int = -1) -> bytes: ...
+    def seek(self, offset: int, whence: int = 0) -> int: ...

stdlib/compression/bz2/__init__.pyi

@@ -0,0 +1 @@
+from bz2 import *

stdlib/compression/gzip/__init__.pyi

@@ -0,0 +1 @@
+from gzip import *

stdlib/compression/lzma/__init__.pyi

@@ -0,0 +1 @@
+from lzma import *

stdlib/compression/zlib/__init__.pyi

@@ -0,0 +1 @@
+from zlib import *