1 #!/usr/bin/env python 2 # Copyright 2013 The Chromium Authors. All rights reserved. 3 # Use of this source code is governed by a BSD-style license that can be 4 # found in the LICENSE file. 5 6 """Wrapper script for running ncval. 7 """ 8 9 import optparse 10 import os 11 import subprocess 12 import sys 13 14 import getos 15 16 SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__)) 17 NACL_SDK_ROOT = os.path.dirname(SCRIPT_DIR) 18 19 if sys.version_info < (2, 6, 0): 20 sys.stderr.write("python 2.6 or later is required run this script\n") 21 sys.exit(1) 22 23 class Error(Exception): 24 pass 25 26 def Log(msg): 27 if Log.verbose: 28 sys.stderr.write(str(msg) + '\n') 29 Log.verbose = False 30 31 def main(argv): 32 usage = 'Usage: %prog [options] <.nexe | .so>' 33 epilog = 'Example: ncval.py my_nexe.nexe' 34 parser = optparse.OptionParser(usage, description=__doc__, epilog=epilog) 35 parser.add_option('-v', '--verbose', action='store_true', 36 help='Verbose output') 37 38 # To enable bash completion for this command first install optcomplete 39 # and then add this line to your .bashrc: 40 # complete -F _optcomplete ncval.py 41 try: 42 import optcomplete 43 optcomplete.autocomplete(parser) 44 except ImportError: 45 pass 46 47 options, args = parser.parse_args(argv) 48 if not args: 49 parser.error('No executable file specified') 50 51 nexe = args[0] 52 if options.verbose: 53 Log.verbose = True 54 55 # TODO(binji): http://crbug.com/321791. Fix ncval upstream to reduce the 56 # amount of additional checking done here. 57 osname = getos.GetPlatform() 58 if not os.path.exists(nexe): 59 raise Error('executable not found: %s' % nexe) 60 if not os.path.isfile(nexe): 61 raise Error('not a file: %s' % nexe) 62 63 ncval = os.path.join(SCRIPT_DIR, 'ncval') 64 if osname == 'win': 65 ncval += '.exe' 66 67 cmd = [ncval, nexe] 68 Log('Running %s' % ' '.join(cmd)) 69 proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE) 70 proc_out, _ = proc.communicate() 71 if proc.returncode: 72 # ncval doesn't print anything to stderr. 73 sys.stderr.write('Validating %s failed:\n' % nexe) 74 sys.stderr.write(proc_out + '\n') 75 76 Log('Changing the modification time of %s to 0.' % nexe) 77 # "untouch" the executable; that is, change the modification time to be so 78 # old that it will be remade when `make` runs. 79 statinfo = os.stat(nexe) 80 mtime = 0 81 os.utime(nexe, (statinfo.st_atime, mtime)) 82 83 return proc.returncode 84 elif options.verbose: 85 # By default, don't print anything on success. 86 Log(proc_out) 87 88 89 if __name__ == '__main__': 90 try: 91 sys.exit(main(sys.argv[1:])) 92 except Error as e: 93 sys.stderr.write(str(e) + '\n') 94 sys.exit(1) 95
