zipfile and Tru64 UNIX

[Anthony Baxter]

>>> Albert Chin-A-Young wrote
> Ok, I did some digging. The attached patch solves the problem. I think
> this is a problem for any machine where sizeof(long) == 8. Is there an
> easier way to force crc to be a 32-bit int. From the typesnumeric.html
> document:
>   Plain integers (also just called integers) are implemented using
>   long in C, which gives them at least 32 bits of precision.

Please submit this as a patch to Sourceforge, if you haven't already.

Thanks,
Anthony

> -- 
> albert chin (china at thewrittenword.com)
> 
> -- snip snip
> --- Lib/zipfile.py.orig	Mon Jul  1 23:10:00 2002
> +++ Lib/zipfile.py	Mon Jul  1 23:10:26 2002
> @@ -346,7 +346,7 @@
>              raise BadZipfile, \
>                    "Unsupported compression method %d for file %s" % \
>              (zinfo.compress_type, name)
> -        crc = binascii.crc32(bytes)
> +        crc = struct.unpack('<l', struct.pack('<l', binascii.crc32(bytes)))[
0]
>          if crc != zinfo.CRC:
>              raise BadZipfile, "Bad CRC-32 for file %s" % name
>          return bytes
> -- 
> http://mail.python.org/mailman/listinfo/python-list
> 

-- 
Anthony Baxter     <anthony at interlink.com.au>   
It's never too late to have a happy childhood.