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#!/usr/bin/env python
#
# Copyright (C) 2021 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.
#
"""CLI script for linting .proto files inside update_engine."""
import sys
import re
import subprocess
def check_proto_file(commit_hash, filename):
"""Check if |filename| is consistnet with our protobuf guidelines
Args:
commit_hash: Hash of the git commit to look
filename: A filesystem path to a .proto file
Returns:
True if this file passes linting check, False otherwise
"""
output = subprocess.check_output(
["git", "diff", commit_hash+"~", commit_hash, "--", filename])
output = output.decode()
p = re.compile(r"^[+]?\s*required .*$", re.M)
m = p.search(output)
if m:
print("File", filename,
"contains 'required' keyword. Usage of required",
"is strongly discouraged in protobuf", m.group())
return False
return True
def main():
if len(sys.argv) < 2:
print("Usage:", sys.argv[0], "commit_hash", "<file1>", "<file2>", "...")
sys.exit(1)
commit_hash = sys.argv[1]
for filename in sys.argv[2:]:
if filename.endswith(".proto"):
if not check_proto_file(commit_hash, filename):
sys.exit(1)
if __name__ == "__main__":
main()