patch.py 文件源码

def apply(self):
    if not getattr(self.document.settings, 'docinfo_xform', 1):
        return
    document = self.document
    index = document.first_child_not_matching_class(
            nodes.PreBibliographic)
    if index is None:
        return
    candidate = document[index]
    if isinstance(candidate, nodes.field_list):
        biblioindex = document.first_child_not_matching_class(
                (nodes.Titular, nodes.Decorative))
        nodelist = self.extract_bibliographic(candidate)
        nodelist[0].realsource = candidate.realsource
        del document[index]         # untransformed field list (candidate)
        document[biblioindex:biblioindex] = nodelist