#!/usr/bin/env python3
#
# Copyright 2019, The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import subprocess

def has_chassis_changes(sha):
    if sha is None:
        return True

    result = subprocess.Popen(['git', 'diff-tree', '--no-commit-id', '--name-only', '-r', sha],
                              stdout=subprocess.PIPE, stderr=subprocess.PIPE)
    stdout, stderr = result.communicate()

    if result.returncode != 0:
        raise Exception("Git error: "+str(stdout)+str(stderr))

    return 'car-ui-lib' in str(stdout)