scripts/qemu-stamp.py

   1 #! /usr/bin/env python3
   2
   3 # Usage: scripts/qemu-stamp.py STRING1 STRING2... -- FILE1 FILE2...
   4 import hashlib
   5 import os
   6 import sys
   7
   8 sha = hashlib.sha1()
   9 is_file = False
  10 for arg in sys.argv[1:]:
  11     if arg == '--':
  12         is_file = True
  13         continue
  14     if is_file:
  15         with open(arg, 'rb') as f:
  16             for chunk in iter(lambda: f.read(65536), b''):
  17                 sha.update(chunk)
  18     else:
  19         sha.update(os.fsencode(arg))
  20         sha.update(b'\n')
  21
  22 # The hash can start with a digit, which the compiler doesn't
  23 # like as an symbol. So prefix it with an underscore
  24 print("_" + sha.hexdigest())