writer.py 文件源码

def renumber_footnotes(self):
        def is_used_number(number):
            for node in self.document.traverse(nodes.footnote):
                if not node.get('auto') and number in node['names']:
                    return True

            return False

        def is_auto_footnote(node):
            return isinstance(node, nodes.footnote) and node.get('auto')

        def footnote_ref_by(node):
            ids = node['ids']
            parent = list(traverse_parent(node, (nodes.document, addnodes.start_of_file)))[0]

            def is_footnote_ref(node):
                return (isinstance(node, nodes.footnote_reference) and
                        ids[0] == node['refid'] and
                        parent in list(traverse_parent(node)))

            return is_footnote_ref

        startnum = 1
        for footnote in self.document.traverse(is_auto_footnote):
            while True:
                label = str(startnum)
                startnum += 1
                if not is_used_number(label):
                    break

            old_label = footnote[0].astext()
            footnote.remove(footnote[0])
            footnote.insert(0, nodes.label('', label))
            if old_label in footnote['names']:
                footnote['names'].remove(old_label)
            footnote['names'].append(label)

            for footnote_ref in self.document.traverse(footnote_ref_by(footnote)):
                footnote_ref.remove(footnote_ref[0])
                footnote_ref += nodes.Text(label)