1#
2# Copyright (C) 2018 The Android Open Source Project
3#
4# Licensed under the Apache License, Version 2.0 (the "License");
5# you may not use this file except in compliance with the License.
6# You may obtain a copy of the License at
7#
8#      http://www.apache.org/licenses/LICENSE-2.0
9#
10# Unless required by applicable law or agreed to in writing, software
11# distributed under the License is distributed on an "AS IS" BASIS,
12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13# See the License for the specific language governing permissions and
14# limitations under the License.
15#
16
17import logging
18
19from xml.etree import ElementTree
20
21
22def GetAttributes(xml_file, tag, attrs):
23    """Parses attributes in the given tag from xml file.
24
25    Args:
26        xml_file: The xml file object.
27        tag: a string, tag to parse from tag xml_file.
28        attrs: a list of attributes to look up inside the tag.
29
30    Returns:
31        A dict containing values of the attributes in tag from the xml file.
32    """
33    result = {}
34    for _, elem in ElementTree.iterparse(xml_file, ("start", )):
35        if elem.tag == tag:
36            for attr in attrs:
37                if attr in elem.attrib:
38                    result[attr] = elem.attrib[attr]
39                else:
40                    logging.warning(
41                        "Cannot find an attribute {} in <{}>".format(
42                            attr, tag))
43    return result
44