extlinks.py 文件源码

def make_link_role(base_url, prefix):
    def role(typ, rawtext, text, lineno, inliner, options={}, content=[]):
        text = utils.unescape(text)
        has_explicit_title, title, part = split_explicit_title(text)
        try:
            full_url = base_url % part
        except (TypeError, ValueError):
            inliner.reporter.warning(
                'unable to expand %s extlink with base URL %r, please make '
                'sure the base contains \'%%s\' exactly once'
                % (typ, base_url), line=lineno)
            full_url = base_url + part
        if not has_explicit_title:
            if prefix is None:
                title = full_url
            else:
                title = prefix + part
        pnode = nodes.reference(title, title, internal=False, refuri=full_url)
        return [pnode], []
    return role