misc.py 文件源码

def parse_uri(uri, cwd=None):
        """Parse the repository location provided and attempt to transform it
        into a valid repository URI.

        'cwd' is the working directory to use to turn paths into an absolute
        path.  If not provided, the current working directory is used.
        """

        if uri.find("://") == -1 and not uri.startswith("file:/"):
                # Convert the file path to a URI.
                if not cwd:
                        uri = os.path.abspath(uri)
                elif not os.path.isabs(uri):
                        uri = os.path.normpath(os.path.join(cwd, uri))

                uri = urlunparse(("file", "",
                    pathname2url(uri), "", "", ""))

        scheme, netloc, path, params, query, fragment = \
            urlparse(uri, "file", allow_fragments=0)
        scheme = scheme.lower()

        if scheme == "file":
                # During urlunparsing below, ensure that the path starts with
                # only one '/' character, if any are present.
                if path.startswith("/"):
                        path = "/" + path.lstrip("/")

        # Rebuild the URI with the sanitized components.
        return urlunparse((scheme, netloc, path, params,
            query, fragment))