[gin] Removing file validation.

gin/fingerprint/fingerprint_v8_snapshot.py

-#!/usr/bin/env python
-#
-# Copyright 2015 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.
-
-"""Fingerprints the V8 snapshot blob files.
-
-Constructs a SHA256 fingerprint of the V8 natives and snapshot blob files and
-creates a .cc file which includes these fingerprint as variables.
-"""
-
-import hashlib
-import optparse
-import os
-import sys
-
-_HEADER = """// Copyright 2015 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.
-
-// This file was generated by fingerprint_v8_snapshot.py.
-
-namespace gin {
-"""
-
-_FOOTER = """
-}  // namespace gin
-"""
-
-
-def FingerprintFile(file_path):
-  input_file = open(file_path, 'rb')
-  sha256 = hashlib.sha256()
-  while True:
-    block = input_file.read(sha256.block_size)
-    if not block:
-      break
-    sha256.update(block)
-  return sha256.digest()
-
-
-def WriteFingerprint(output_file, variable_name, fingerprint):
-  output_file.write('\nextern const unsigned char %s[] = { ' % variable_name)
-  for byte in fingerprint:
-    output_file.write(str(ord(byte)) + ', ')
-  output_file.write('};\n')
-
-
-def WriteOutputFile(natives_fingerprint,
-                    snapshot_fingerprint,
-                    output_file_path):
-  output_dir_path = os.path.dirname(output_file_path)
-  if not os.path.exists(output_dir_path):
-    os.makedirs(output_dir_path)
-  output_file = open(output_file_path, 'w')
-
-  output_file.write(_HEADER)
-  WriteFingerprint(output_file, 'g_natives_fingerprint', natives_fingerprint)
-  output_file.write('\n')
-  WriteFingerprint(output_file, 'g_snapshot_fingerprint', snapshot_fingerprint)
-  output_file.write(_FOOTER)
-
-
-def main():
-  parser = optparse.OptionParser()
-
-  parser.add_option('--snapshot_file',
-                    help='The input V8 snapshot blob file path.')
-  parser.add_option('--natives_file',
-                    help='The input V8 natives blob file path.')
-  parser.add_option('--output_file',
-                    help='The path for the output cc file which will be write.')
-
-  options, _ = parser.parse_args()
-
-  natives_fingerprint = FingerprintFile(options.natives_file)
-  snapshot_fingerprint = FingerprintFile(options.snapshot_file)
-  WriteOutputFile(
-      natives_fingerprint, snapshot_fingerprint, options.output_file)
-
-  return 0
-
-
-if __name__ == '__main__':
-  sys.exit(main())