1#!/usr/bin/env python
2#
3# Copyright (C) 2017 The Android Open Source Project
4#
5# Licensed under the Apache License, Version 2.0 (the "License");
6# you may not use this file except in compliance with the License.
7# You may obtain a copy of the License at
8#
9#      http://www.apache.org/licenses/LICENSE-2.0
10#
11# Unless required by applicable law or agreed to in writing, software
12# distributed under the License is distributed on an "AS IS" BASIS,
13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14# See the License for the specific language governing permissions and
15# limitations under the License.
16#
17
18import sys
19
20def main(argv):
21    original_file = 'frameworks/base/data/fonts/fonts.xml'
22
23    if len(argv) == 3:
24        output_file_path = argv[1]
25        override_file_path = argv[2]
26    else:
27        raise ValueError("Wrong number of arguments %s" % len(argv))
28
29    fallbackPlaceholderFound = False
30    with open(original_file, 'r') as input_file:
31        with open(output_file_path, 'w') as output_file:
32            for line in input_file:
33                # If we've found the spot to add additional fonts, add them.
34                if line.strip() == '<!-- fallback fonts -->':
35                    fallbackPlaceholderFound = True
36                    with open(override_file_path) as override_file:
37                        for override_line in override_file:
38                            output_file.write(override_line)
39                output_file.write(line)
40    if not fallbackPlaceholderFound:
41        raise ValueError('<!-- fallback fonts --> not found in source file: %s' % original_file)
42
43if __name__ == '__main__':
44    main(sys.argv)
45