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comparison mxtool/mx.py @ 14156:7668297a2e67

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mx: compute sha1 digest blockwise
author Bernhard Urban <bernhard.urban@jku.at>
date Wed, 12 Mar 2014 13:36:23 +0100
parents 1ac6195ee586
children 7c36ec150036
comparison
equal deleted inserted replaced
14155:1ac6195ee586 14156:7668297a2e67
355 with open(sha1path, 'w') as f: 355 with open(sha1path, 'w') as f:
356 f.write(_sha1OfFile()) 356 f.write(_sha1OfFile())
357 357
358 def _sha1OfFile(): 358 def _sha1OfFile():
359 with open(path, 'rb') as f: 359 with open(path, 'rb') as f:
360 return hashlib.sha1(f.read()).hexdigest() 360 d = hashlib.sha1()
361 361 while True:
362 buf = f.read(4096)
363 if not buf:
364 break
365 d.update(buf)
366 return d.hexdigest()
362 367
363 if resolve and mustExist and not exists(path): 368 if resolve and mustExist and not exists(path):
364 assert not len(urls) == 0, 'cannot find required library ' + name + ' ' + path 369 assert not len(urls) == 0, 'cannot find required library ' + name + ' ' + path
365 _download_lib() 370 _download_lib()
366 371