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 _search_or(self, base, search_filter, candidates=None):
        # Create empty candidates list as we need to use self.directory for
        # each search
        candidates = list()
        this_filter = list()

        index = 0
        search_filter.remove("|")
        for condition in search_filter:
            if not isinstance(condition, list):
                this_filter.append(condition)
            index +=1

        # Remove this_filter items from search_filter list
        for condition in this_filter:
            search_filter.remove(condition)

        try:
            search_filter = list(search_filter[0])
            for sub_filter in search_filter:
                if not isinstance(sub_filter, list):
                    candidates += self.operation.get(sub_filter)(base,
                                                                 search_filter,
                                                                 candidates)
                else:
                    candidates += self.operation.get(sub_filter[0])(base,
                                                                    sub_filter,
                                                                    candidates)
        except IndexError:
            pass

        for item in this_filter:
            if ">=" in item:
                k, v = item.split(">=")
                candidates += Connection._match_greater_than_or_equal(base, k, v,
                                                             self.directory)
            elif "<=" in item:
                k, v = item.split("<=")
                candidates += Connection._match_less_than_or_equal(base, k, v,
                                                          self.directory)
            # Emulate AD functionality, same as "="
            elif "~=" in item:
                k, v = item.split("~=")
                candidates += Connection._match_equal_to(base, k, v,
                                                         self.directory)
            elif "=" in item:
                k, v = item.split("=")
                candidates += Connection._match_equal_to(base, k, v,
                                                         self.directory)
        return candidates