text: #===----------------------------------------------------------------------===##
  #
  # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  # See https://llvm.org/LICENSE.txt for license information.
  # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  #
  #===----------------------------------------------------------------------===##
  
  """not.py is a utility for inverting the return code of commands.
  It acts similar to llvm/utils/not.
  ex: python /path/to/not.py ' echo hello
      echo $? // (prints 1)
  """
  
  import distutils.spawn
  import subprocess
  import sys
  
  
  def main():
      argv = list(sys.argv)
      del argv[0]
      if len(argv) > 0 and argv[0] == '--crash':
          del argv[0]
          expectCrash = True
      else:
          expectCrash = False
      if len(argv) == 0:
          return 1
      prog = distutils.spawn.find_executable(argv[0])
      if prog is None:
          sys.stderr.write('Failed to find program %s' % argv[0])
          return 1
      rc = subprocess.call(argv)
      if rc < 0:
          return 0 if expectCrash else 1
      if expectCrash:
          return 1
      return rc == 0
  
  
  if __name__ == '__main__':
      exit(main())
  