def extract_bower_zipfile(self, zip_file, dest, expected_version=None):
        bower_json = None
        root = None
        deps_installed = []
        for info in zip_file.infolist():
            if PurePath(info.filename).name == "bower.json":
                with zip_file.open(info) as f:
                    bower_json = json.load(f)
                    root = str(PurePath(info.filename).parent)
                break
        version = bower_json["version"]
        if expected_version is not None:
            expected_version = Bower.clean_semver(expected_version)
            if not semver.match(version, expected_version):
                click.secho("error: versions do not match ({} =/= {})".format(
                    version, expected_version))
                raise InvalidPackageError
        if "dependencies" in bower_json:
            for package, version in bower_json["dependencies"].items():
                url = Bower.get_package_url(package)
                deps_installed.extend(self.get_bower_package(
                    url, dest=dest, version=version))
        ignore_patterns = [GitIgnorePattern(ig) for ig in bower_json["ignore"]]
        path_spec = PathSpec(ignore_patterns)
        namelist = [path for path in zip_file.namelist()
                    if PurePath(path).parts[0] == root]
        ignored = list(path_spec.match_files(namelist))
        for path in namelist:
            dest_path = PurePath(
                bower_json["name"],
                *PurePath(path).parts[1:])

            if path in ignored:
                continue

            for path in ignored:
                for parent in PurePath(path):
                    if parent in ignored:
                        continue

            if path.endswith("/"):
                if list(path_spec.match_files([str(dest_path)])):
                    ignored.append(PurePath(path))
                elif not (dest / dest_path).is_dir():
                    (dest / dest_path).mkdir(parents=True)
            else:
                target_path = dest / dest_path.parent / dest_path.name
                source = zip_file.open(path)
                target = target_path.open("wb")
                with source, target:
                    shutil.copyfileobj(source, target)
        deps_installed.append((bower_json["name"], bower_json["version"]))
        return deps_installed
def reset_log_location(cls, new_log_location: str) -> None:
        """Re-acquire file handles to error logs based in the new location.

        Class state:
        - Overwrites `cls._log_dir`, `cls._pid_specific_error_fileobj`, and
          `cls._shared_error_fileobj`.
        OS state:
        - May create a new directory.
        - Overwrites signal handlers for many fatal and non-fatal signals (but not SIGUSR2).

        :raises: :class:`ExceptionSink.ExceptionSinkError` if the directory does not exist or is not
                 writable.
        """
        # We could no-op here if the log locations are the same, but there's no reason not to have the
        # additional safety of re-acquiring file descriptors each time (and erroring out early if the
        # location is no longer writable).
        try:
            safe_mkdir(new_log_location)
        except Exception as e:
            raise cls.ExceptionSinkError(
                "The provided log location path at '{}' is not writable or could not be created: {}.".format(
                    new_log_location, str(e)
                ),
                e,
            )

        pid = os.getpid()
        pid_specific_log_path = cls.exceptions_log_path(for_pid=pid, in_dir=new_log_location)
        shared_log_path = cls.exceptions_log_path(in_dir=new_log_location)
        assert pid_specific_log_path != shared_log_path
        try:
            pid_specific_error_stream = safe_open(pid_specific_log_path, mode="w")
            shared_error_stream = safe_open(shared_log_path, mode="a")
        except Exception as e:
            raise cls.ExceptionSinkError(
                "Error opening fatal error log streams for log location '{}': {}".format(
                    new_log_location, str(e)
                )
            )

        # NB: mutate process-global state!
        if faulthandler.is_enabled():
            logger.debug("re-enabling faulthandler")
            # Call Py_CLEAR() on the previous error stream:
            # https://github.com/vstinner/faulthandler/blob/master/faulthandler.c
            faulthandler.disable()
        # Send a stacktrace to this file if interrupted by a fatal error.
        faulthandler.enable(file=pid_specific_error_stream, all_threads=True)

        # NB: mutate the class variables!
        cls._log_dir = new_log_location
        cls._pid_specific_error_fileobj = pid_specific_error_stream
        cls._shared_error_fileobj = shared_error_stream