text: #!/usr/bin/env python
  #
  # Copyright 2019 Google LLC
  #
  # Use of this source code is governed by a BSD-style license that can be
  # found in the LICENSE file.
  
  
  """Check the DEPS file for correctness."""
  
  
  from __future__ import print_function
  import os
  import re
  import subprocess
  import sys
  
  import utils
  
  
  INFRA_BOTS_DIR = os.path.dirname(os.path.realpath(__file__))
  SKIA_DIR = os.path.abspath(os.path.join(INFRA_BOTS_DIR, os.pardir, os.pardir))
  
  
  def main():
    """Load the DEPS file and verify that all entries are valid."""
    # Find gclient.py and run that instead of simply "gclient", which calls into
    # update_depot_tools.
    gclient = subprocess.check_output([
        utils.WHICH, utils.GCLIENT]).decode('utf-8')
    gclient_py = os.path.join(os.path.dirname(gclient), 'gclient.py')
    python = sys.executable or 'python'
  
    # Obtain the DEPS mapping.
    output = subprocess.check_output(
        [python, gclient_py, 'revinfo'], cwd=SKIA_DIR).decode('utf-8')
  
    # Check each entry.
    errs = []
    for e in output.rstrip().splitlines():
      split = e.split(': ')
      if len(split) != 2:
        errs.append(
            'Failed to parse `gclient revinfo` output; invalid format: %s' % e)
        continue
      if split[0] == 'skia':
        continue
      split = split[1].split('@')
      if len(split) != 2:
        errs.append(
            'Failed to parse `gclient revinfo` output; invalid format: %s' % e)
        continue
      repo = split[0]
      rev = split[1]
      if 'chrome-infra-packages' in repo:
        continue
      if not 'googlesource.com' in repo:
        errs.append(
            'DEPS must be hosted on googlesource.com; %s is not allowed. '
            'See http://go/new-skia-git-mirror' % repo)
      if not re.match(r'^[a-z0-9]{40}$', rev):
        errs.append('%s: "%s" does not look like a commit hash.' % (repo, rev))
    if errs:
      print('Found problems in DEPS:', file=sys.stderr)
      for err in errs:
        print(err, file=sys.stderr)
      sys.exit(1)
  
  
  if __name__ == '__main__':
    main()
  