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from __future__ import annotations
import contextlib
import functools
import os.path
import sys
import traceback
from typing import Generator
from typing import IO
import pre_commit.constants as C
from pre_commit import output
from pre_commit.errors import FatalError
from pre_commit.store import Store
from pre_commit.util import cmd_output_b
from pre_commit.util import force_bytes
def _log_and_exit(
msg: str,
ret_code: int,
exc: BaseException,
formatted: str,
) -> None:
error_msg = f'{msg}: {type(exc).__name__}: '.encode() + force_bytes(exc)
output.write_line_b(error_msg)
_, git_version_b, _ = cmd_output_b('git', '--version', retcode=None)
git_version = git_version_b.decode(errors='backslashreplace').rstrip()
storedir = Store().directory
log_path = os.path.join(storedir, 'pre-commit.log')
with contextlib.ExitStack() as ctx:
if os.access(storedir, os.W_OK):
output.write_line(f'Check the log at {log_path}')
log: IO[bytes] = ctx.enter_context(open(log_path, 'wb'))
else: # pragma: win32 no cover
output.write_line(f'Failed to write to log at {log_path}')
log = sys.stdout.buffer
_log_line = functools.partial(output.write_line, stream=log)
_log_line_b = functools.partial(output.write_line_b, stream=log)
_log_line('### version information')
_log_line()
_log_line('```')
_log_line(f'pre-commit version: {C.VERSION}')
_log_line(f'git --version: {git_version}')
_log_line('sys.version:')
for line in sys.version.splitlines():
_log_line(f' {line}')
_log_line(f'sys.executable: {sys.executable}')
_log_line(f'os.name: {os.name}')
_log_line(f'sys.platform: {sys.platform}')
_log_line('```')
_log_line()
_log_line('### error information')
_log_line()
_log_line('```')
_log_line_b(error_msg)
_log_line('```')
_log_line()
_log_line('```')
_log_line(formatted.rstrip())
_log_line('```')
raise SystemExit(ret_code)
@contextlib.contextmanager
def error_handler() -> Generator[None, None, None]:
try:
yield
except (Exception, KeyboardInterrupt) as e:
if isinstance(e, FatalError):
msg, ret_code = 'An error has occurred', 1
elif isinstance(e, KeyboardInterrupt):
msg, ret_code = 'Interrupted (^C)', 130
else:
msg, ret_code = 'An unexpected error has occurred', 3
_log_and_exit(msg, ret_code, e, traceback.format_exc())
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