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File Name : _ctx.py

from __future__ import annotations

import contextvars
import logging
import subprocess
import typing

from collections.abc import Mapping, Sequence
from functools import partial

from ._types import StrPath

class _Logger(typing.Protocol):  # pragma: no cover
    def __call__(self, message: str, *, origin: tuple[str, ...] | None = None) -> None: ...

_package_name = __spec__.parent
_default_logger = logging.getLogger(_package_name)

def _log_default(message: str, *, origin: tuple[str, ...] | None = None) -> None:
    if origin is None:
        _default_logger.log(logging.INFO, message, stacklevel=2)

LOGGER = contextvars.ContextVar('LOGGER', default=_log_default)
VERBOSITY = contextvars.ContextVar('VERBOSITY', default=0)

def log_subprocess_error(error: subprocess.CalledProcessError) -> None:
    log = LOGGER.get()

log(subprocess.list2cmdline(error.cmd), origin=('subprocess', 'cmd'))

for stream_name in ('stdout', 'stderr'):
        stream = getattr(error, stream_name)
        if stream:
            log(stream.decode() if isinstance(stream, bytes) else stream, origin=('subprocess', stream_name))

def run_subprocess(cmd: Sequence[StrPath], env: Mapping[str, str] | None = None) -> None:
    verbosity = VERBOSITY.get()

if verbosity:
        import concurrent.futures

log = LOGGER.get()

def log_stream(stream_name: str, stream: typing.IO[str]) -> None:
            for line in stream:
                log(line, origin=('subprocess', stream_name))

with (
            concurrent.futures.ThreadPoolExecutor(max_workers=2) as executor,
            subprocess.Popen(cmd, encoding='utf-8', env=env, stdout=subprocess.PIPE, stderr=subprocess.PIPE) as process,
        ):
            log(subprocess.list2cmdline(cmd), origin=('subprocess', 'cmd'))

# Logging in sub-thread to more-or-less ensure order of stdout and stderr whilst also
            # being able to distinguish between the two.
            concurrent.futures.wait(
                [executor.submit(partial(log_stream, n, getattr(process, n))) for n in ('stdout', 'stderr')]
            )

code = process.wait()
            if code:  # pragma: no cover
                raise subprocess.CalledProcessError(code, process.args)

else:
        try:
            subprocess.run(cmd, capture_output=True, check=True, env=env)
        except subprocess.CalledProcessError as error:
            log_subprocess_error(error)
            raise

if typing.TYPE_CHECKING:
    log: _Logger
    verbosity: bool

else:

def __getattr__(name):
        if name == 'log':
            return LOGGER.get()
        elif name == 'verbosity':
            return VERBOSITY.get()
        raise AttributeError(name)  # pragma: no cover

__all__ = [
    'LOGGER',
    'VERBOSITY',
    'log',
    'log_subprocess_error',
    'run_subprocess',
    'verbosity',
]

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2025-12-03 06:02:43
..	dir	-	root/root	0755	2025-12-03 06:02:43
__pycache__	dir	-	root/root	0755	2025-12-03 06:02:43
_compat	dir	-	root/root	0755	2025-12-03 06:02:43
__init__.py	text/plain	837 B	root/root	0644	2025-12-03 06:02:43
__main__.py	text/x-script.python	15.15 KB	root/root	0644	2025-12-03 06:02:43
_builder.py	text/x-script.python	13.15 KB	root/root	0644	2025-12-03 06:02:43
_ctx.py	text/x-script.python	2.82 KB	root/root	0644	2025-12-03 06:02:43
_exceptions.py	text/x-script.python	1.59 KB	root/root	0644	2025-12-03 06:02:43
_types.py	text/x-script.python	553 B	root/root	0644	2025-12-03 06:02:43
_util.py	text/x-script.python	2.27 KB	root/root	0644	2025-12-03 06:02:43
env.py	text/x-script.python	13.91 KB	root/root	0644	2025-12-03 06:02:43
py.typed	application/x-empty	0 B	root/root	0644	2025-12-03 06:02:43
util.py	text/x-script.python	1.8 KB	root/root	0644	2025-12-03 06:02:43

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