| #!/usr/bin/env python3 |
| # Copyright (C) 2026 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. |
| |
| # Prints a short hex digest of the given file. Used from GN to fold a file's |
| # contents into a compile flag, so that ccache (which doesn't follow files |
| # referenced by flags like -fsanitize-ignorelist=) invalidates when the file |
| # changes. |
| |
| import hashlib |
| import sys |
| |
| |
| def main(): |
| with open(sys.argv[1], 'rb') as f: |
| print(hashlib.sha256(f.read()).hexdigest()[:16]) |
| |
| |
| if __name__ == '__main__': |
| sys.exit(main()) |
