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# SPDX-FileCopyrightText: 2021 Filipe Laíns <lains@riseup.net>
# SPDX-FileCopyrightText: 2021 Quansight, LLC
# SPDX-FileCopyrightText: 2022 The meson-python developers
#
# SPDX-License-Identifier: MIT
from __future__ import annotations
import contextlib
import gzip
import os
import tarfile
import typing
from typing import IO
if typing.TYPE_CHECKING: # pragma: no cover
from mesonpy._compat import Iterator, Path
@contextlib.contextmanager
def chdir(path: Path) -> Iterator[Path]:
"""Context manager helper to change the current working directory -- cd."""
old_cwd = os.getcwd()
os.chdir(os.fspath(path))
try:
yield path
finally:
os.chdir(old_cwd)
@contextlib.contextmanager
def create_targz(path: Path) -> Iterator[tarfile.TarFile]:
"""Opens a .tar.gz file in the file system for edition.."""
os.makedirs(os.path.dirname(path), exist_ok=True)
file = typing.cast(IO[bytes], gzip.GzipFile(
path,
mode='w',
# Set the stream last modification time to 0. This mimics
# what 'git archive' does and makes the archives byte-for-byte
# reproducible.
mtime=0,
))
tar = tarfile.TarFile(
mode='w',
fileobj=file,
format=tarfile.PAX_FORMAT, # changed in 3.8 to GNU
)
with contextlib.closing(file), tar:
yield tar
def setup_windows_console() -> bool:
from ctypes import byref, windll # type: ignore
from ctypes.wintypes import DWORD
STD_OUTPUT_HANDLE = -11
ENABLE_VIRTUAL_TERMINAL_PROCESSING = 0x04
kernel = windll.kernel32
stdout = kernel.GetStdHandle(STD_OUTPUT_HANDLE)
mode = DWORD()
if not kernel.GetConsoleMode(stdout, byref(mode)):
return False
if not kernel.SetConsoleMode(stdout, mode.value | ENABLE_VIRTUAL_TERMINAL_PROCESSING):
return False
return True
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