def insertRoot()

in bleach/_vendor/html5lib/treebuilders/etree_lxml.py [0:0]
42 lines of code
2 McCabe index (conditional complexity)

    def insertRoot(self, token):
        # Because of the way libxml2 works, it doesn't seem to be possible to
        # alter information like the doctype after the tree has been parsed.
        # Therefore we need to use the built-in parser to create our initial
        # tree, after which we can add elements like normal
        docStr = ""
        if self.doctype:
            assert self.doctype.name
            docStr += "<!DOCTYPE %s" % self.doctype.name
            if (self.doctype.publicId is not None or
                    self.doctype.systemId is not None):
                docStr += (' PUBLIC "%s" ' %
                           (self.infosetFilter.coercePubid(self.doctype.publicId or "")))
                if self.doctype.systemId:
                    sysid = self.doctype.systemId
                    if sysid.find("'") >= 0 and sysid.find('"') >= 0:
                        warnings.warn("DOCTYPE system cannot contain single and double quotes", DataLossWarning)
                        sysid = sysid.replace("'", 'U00027')
                    if sysid.find("'") >= 0:
                        docStr += '"%s"' % sysid
                    else:
                        docStr += "'%s'" % sysid
                else:
                    docStr += "''"
            docStr += ">"
            if self.doctype.name != token["name"]:
                warnings.warn("lxml cannot represent doctype with a different name to the root element", DataLossWarning)
        docStr += "<THIS_SHOULD_NEVER_APPEAR_PUBLICLY/>"
        root = etree.fromstring(docStr)

        # Append the initial comments:
        for comment_token in self.initial_comments:
            comment = self.commentClass(comment_token["data"])
            root.addprevious(comment._element)

        # Create the root document and add the ElementTree to it
        self.document = self.documentClass()
        self.document._elementTree = root.getroottree()

        # Give the root element the right name
        name = token["name"]
        namespace = token.get("namespace", self.defaultNamespace)
        if namespace is None:
            etree_tag = name
        else:
            etree_tag = "{%s}%s" % (namespace, name)
        root.tag = etree_tag

        # Add the root element to the internal child/open data structures
        root_element = self.elementClass(name, namespace)
        root_element._element = root
        self.document._childNodes.append(root_element)
        self.openElements.append(root_element)

        # Reset to the default insert comment function
        self.insertComment = self.insertCommentMain