Ken,
Unfortunately it sounds like you are dealing with a Windows "zip"
archive which is different from a "gzip" encoded archive. See this
post for a nutshell explanation:
http://aplawrence.com/Bofcusm/2615.html
In short, they are related but not interoperable. You will probably
have to tap into an actual "zip" library if these files have been
compressed using a different algorithm than gzip.
With that said, there should be command-line "zip" utilities for every
OS, so you might still be able to include those and use shell() calls.
Can you compress a copy of the original file with Rev, and compare it
to the zlib compressed copy? Does the data look totally different, or
maybe just off by a few bytes / headers?
Unfortunately, I don't have the original file... the files I'm
receiving are
from another program on Windows that only decompresses the data in
memory;
the files on disk are always in a compressed state, so the files I
can look
at are always compressed.
If you have a MacOS X machine (or Linux) handy, you can use gzip and
gunzip as command-line equivalents of compress() and decompress() and
see how those results compare as well...
Yeah, I've tried that already and keep getting errors that the data
is "not
compressed".
:-(
Ken Ray
Sons of Thunder Software, Inc.
Email: [email protected]
Web Site: http://www.sonsothunder.com/
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