1 #===----------------------------------------------------------------------===## 2 # 3 # The LLVM Compiler Infrastructure 4 # 5 # This file is dual licensed under the MIT and the University of Illinois Open 6 # Source Licenses. See LICENSE.TXT for details. 7 # 8 #===----------------------------------------------------------------------===## 9 10 """not.py is a utility for inverting the return code of commands. 11 It acts similar to llvm/utils/not. 12 ex: python /path/to/not.py ' echo hello 13 echo $? // (prints 1) 14 """ 15 16 import distutils.spawn 17 import subprocess 18 import sys 19 20 21 def main(): 22 argv = list(sys.argv) 23 del argv[0] 24 if len(argv) > 0 and argv[0] == '--crash': 25 del argv[0] 26 expectCrash = True 27 else: 28 expectCrash = False 29 if len(argv) == 0: 30 return 1 31 prog = distutils.spawn.find_executable(argv[0]) 32 if prog is None: 33 sys.stderr.write('Failed to find program %s' % argv[0]) 34 return 1 35 rc = subprocess.call(argv) 36 if rc < 0: 37 return 0 if expectCrash else 1 38 if expectCrash: 39 return 1 40 return rc == 0 41 42 43 if __name__ == '__main__': 44 exit(main()) 45
