Martin Maney <[EMAIL PROTECTED]> wrote:
> Nick Craig-Wood <[EMAIL PROTECTED]> wrote:
> > You don't need to do that, you can just "monkey patch" the _EndRecData
> > function.
>
> For a quick & dirty test, sure. If I were certain I'd only ever use
> this on one machine for a limited time (viz, no system upgrades that
> replace zipfile.py) it might suffice. But that doesn't generalize
> worth a damn.
>From the above I don't think you've understood the concept of monkey
patching - it is run time patching. You patch the zipfile module from
your code - no messing with the installed python needed. Eg something
like :-
------------------------------------------------------------
import zipfile
OriginalEndRecData = zipfile._EndRecData
def MyEndRecData(fpin):
"""
Return data from the "End of Central Directory" record, or
None.
"""
# Try the builtin one first
endrec = OriginalEndRecData(fpin)
if endrec is None:
# didn't work so do something extra
# you fill this bit in!
pass
return endrec
zipfile._EndRecData = MyEndRecData
# Now use your run time patched zipfile module as normal
------------------------------------------------------------
It isn't ideal, but it certainly does generalise.
--
Nick Craig-Wood <[EMAIL PROTECTED]> -- http://www.craig-wood.com/nick
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