Function good_file

Tools/c-analyzer/c_parser/source.py:23–32

(filename, alt=None)

@contextlib.contextmanager
def good_file(filename, alt=None):
    if not _looks_like_filename(filename):
        raise ValueError(f'expected a filename, got {filename}')
    filename, _ = _resolve_filename(filename, alt)
    try:
        yield filename
    except Exception:
        if not os.path.exists(filename):
            raise FileNotFoundError(f'file not found: {filename}')
        raise  # re-raise


def _looks_like_filename(value):