1 #!/usr/bin/env python 2 3 import sys 4 5 try: 6 import hashlib 7 sha1 = hashlib.sha1 8 except ImportError, e: 9 import sha 10 sha1 = sha.sha 11 12 def compute_sha1(h, path): 13 f = open(path, 'rb') 14 while True: 15 buf = f.read(1024) 16 h.update(buf) 17 if len(buf) < 1024: 18 break 19 f.close() 20 21 def compute_sha1_list(path_list): 22 h = sha1() 23 for path in path_list: 24 compute_sha1(h, path) 25 return h.digest() 26 27 def main(): 28 if len(sys.argv) < 2: 29 print 'USAGE:', sys.argv[0], '[OUTPUT] [INPUTs]' 30 sys.exit(1) 31 32 f = open(sys.argv[1], 'wb') 33 f.write(compute_sha1_list(sys.argv[2:])) 34 f.close() 35 36 if __name__ == '__main__': 37 main() 38
