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better error handling when Store is readonly

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This commit is contained in:
Anthony Sottile
2020-07-24 15:56:35 -07:00
parent 0e851bdf75
commit cee834bb5e
2 changed files with 39 additions and 3 deletions
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13
pre_commit/error_handler.py
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@@ -18,10 +18,17 @@ class FatalError(RuntimeError):
def _log_and_exit(msg: str, exc: BaseException, formatted: str) -> None:
error_msg = f'{msg}: {type(exc).__name__}: '.encode() + force_bytes(exc)
output.write_line_b(error_msg)
log_path = os.path.join(Store().directory, 'pre-commit.log')
output.write_line(f'Check the log at {log_path}')
with open(log_path, 'wb') as log:
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 = 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)