Danek Duvall wrote:
On Tue, Feb 10, 2009 at 03:48:36PM -0600, Shawn Walker wrote:
I'm not sure how the seek/tell dance could be accomplished to calculate a
hash at first glance,
Sorry; I must have gotten mixed up -- it would be a way to set the size of
/dev/null to zero without having to stat it or read its data, not to
compute the hash.
although calculating file size makes sense.
What about this?
fhash = sha.new()
while length > 0:
data = f.read(min(bufsz, length))
fhash.update(data)
l = len(data)
if l == 0:
length = 0
else:
length -= l
f.close()
Won't that still loop forever? Perhaps you meant "if l == 0: break"?
No, given that it is in a while length > 0 loop :-)
I've tested this already.
Explicitly setting pkg.size for /dev/null may still be the way to go.
Maybe both changes should be made. The above change helps when we hit
the end of a file sooner than expected...
--
Shawn Walker
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