blob: cb3291aa1c69599425f2eae68c0196802321873e [file] [log] [blame]
# Copyright 2018 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Computes digests for files, and stores them in a proto file.
This script's input is a file that contains a newline-separated list of files
for which digests are to be computed. Once computed, the digests are put in a
FileDigests protobuf message, which is saved in binary format to the specified
import argparse
import hashlib
import import_util
import os
import sys
# Assume we are running from the build dir where protos are generated.
import file_digest_pb2
def main():
parser = argparse.ArgumentParser()
parser.add_argument('file', type=str, nargs='+',
help='paths to the files for which digests need to be '
parser.add_argument('--output', type=str, required=True,
help='path to the file where the proto with the ' +
'computed digests should be saved')
args = parser.parse_args()
# Compute each file's digest, and store it in |proto|.
proto = file_digest_pb2.FileDigests()
for current_file in args.file:
digest = hashlib.sha256()
with open(current_file, 'rb') as infile:
file_digest = proto.file_digests.add()
file_digest.filename = os.path.basename(current_file)
file_digest.digest = digest.hexdigest()
# Write |proto| to |args.output|.
with open(args.output, 'wb') as outfile:
return 0
if __name__ == '__main__':