| # Copyright 2015 The Bazel Authors. All rights reserved. |
| # |
| # 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. |
| """A wrapper to have a portable SHA-256 tool.""" |
| |
| # TODO(dmarting): instead of this tool we should make SHA-256 of artifacts |
| # available in Skylark. |
| import hashlib |
| import sys |
| |
| if __name__ == "__main__": |
| if len(sys.argv) != 3: |
| # pylint: disable=superfluous-parens |
| print("Usage: %s input output" % sys.argv[0]) |
| sys.exit(-1) |
| with open(sys.argv[2], "w") as outputfile: |
| with open(sys.argv[1], "rb") as inputfile: |
| sha256 = hashlib.sha256() |
| while True: |
| data = inputfile.read(65536) |
| if not data: |
| break |
| sha256.update(data) |
| outputfile.write(sha256.hexdigest()) |
