external/bsd/libc++/dist/libcxx/utils/not/not.py

   1 """not.py is a utility for inverting the return code of commands.
   2 It acts similar to llvm/utils/not.
   3 ex: python /path/to/not.py ' echo hello
   4     echo $? // (prints 1)
   5 """
   6
   7 import distutils.spawn
   8 import subprocess
   9 import sys
  10
  11
  12 def main():
  13     argv = list(sys.argv)
  14     del argv[0]
  15     if len(argv) > 0 and argv[0] == '--crash':
  16         del argv[0]
  17         expectCrash = True
  18     else:
  19         expectCrash = False
  20     if len(argv) == 0:
  21         return 1
  22     prog = distutils.spawn.find_executable(argv[0])
  23     if prog is None:
  24         sys.stderr.write('Failed to find program %s' % argv[0])
  25         return 1
  26     rc = subprocess.call(argv)
  27     if rc < 0:
  28         return 0 if expectCrash else 1
  29     if expectCrash:
  30         return 1
  31     return rc == 0
  32
  33
  34 if __name__ == '__main__':
  35     exit(main())