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 __init__(self, root, cwd, kindpats, ctx=None, badfn=None):
        super(includematcher, self).__init__(root, cwd, badfn)

        # Can we use tree matcher?
        rules = _kindpatstoglobs(kindpats, recursive=True)
        fallback = True
        if rules is not None:
            try:
                matcher = treematcher(root, cwd, badfn=badfn, rules=rules)
                # Replace self to 'matcher'.
                self.__dict__ = matcher.__dict__
                self.__class__ = matcher.__class__
                fallback = False
            except ValueError:
                # for example, Regex("Compiled regex exceeds size limit of 10485760 bytes.")
                pass
        if fallback:
            self._pats, self.matchfn = _buildmatch(ctx, kindpats, "(?:/|$)", root)
            # prefix is True if all patterns are recursive, so certain fast paths
            # can be enabled. Unfortunately, it's too easy to break it (ex. by
            # using "glob:*.c", "re:...", etc).
            self._prefix = _prefix(kindpats)
            roots, dirs = _rootsanddirs(kindpats)
            # roots are directories which are recursively included.
            # If self._prefix is True, then _roots can have a fast path for
            # visitdir to return "all", marking things included unconditionally.
            # If self._prefix is False, then that optimization is unsound because
            # "roots" might contain entries that is not recursive (ex. roots will
            # include "foo/bar" for pattern "glob:foo/bar/*.c").
            self._roots = set(roots)
            # dirs are directories which are non-recursively included.
            # That is, files under that directory are included. But not
            # subdirectories.
            self._dirs = set(dirs)
            # Try to use a more efficient visitdir implementation
            visitdir = _buildvisitdir(kindpats)
            if visitdir:
                self.visitdir = visitdir