previews.py 文件源码

def run(self):
        while True:
            # wait for next element
            element = self.queue.get()

            if element is None or element.tag is Comment:
                self.return_signal.emit("")
                continue

            element = XML(tostring(element))

            # process the element
            deannotate(element, cleanup_namespaces=True)
            code = tostring(element, encoding="Unicode", pretty_print=True, xml_declaration=False)
            self.return_signal.emit(highlight(code, XmlLexer(), HtmlFormatter(
                noclasses=True, style="autumn", linenos="table"
            )))