xform_instance_parser.py 文件源码

def _xml_node_to_dict(node, repeats=[]):
    assert isinstance(node, minidom.Node)
    if len(node.childNodes) == 0:
        # there's no data for this leaf node
        return None
    elif len(node.childNodes) == 1 and \
            node.childNodes[0].nodeType == node.TEXT_NODE:
        # there is data for this leaf node
        return {node.nodeName: node.childNodes[0].nodeValue}
    else:
        # this is an internal node
        value = {}
        for child in node.childNodes:

            # handle CDATA text section
            if child.nodeType == child.CDATA_SECTION_NODE:
                return {child.parentNode.nodeName: child.nodeValue}

            d = _xml_node_to_dict(child, repeats)
            if d is None:
                continue
            child_name = child.nodeName
            child_xpath = xpath_from_xml_node(child)
            assert d.keys() == [child_name]
            node_type = dict
            # check if name is in list of repeats and make it a list if so
            if child_xpath in repeats:
                node_type = list

            if node_type == dict:
                if child_name not in value:
                    value[child_name] = d[child_name]
                else:
                    raise InstanceMultipleNodeError(
                        _(u"Multiple nodes with the same name '%s'"
                          u" while not a repeat" % child_name))
            else:
                if child_name not in value:
                    value[child_name] = [d[child_name]]
                else:
                    value[child_name].append(d[child_name])
        if value == {}:
            return None
        else:
            return {node.nodeName: value}