Re: Need info on archive file formats

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#93

From: Nick FitzGerald, CSC, Uni. of Ca...
Date: Thu, 23 Jul 1992 00:23

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Someone asked about zip, arj, lzh, etc archive file formats (I can't do
a "fancy" reply coz he cross-posted to comp.sys.msdos.programmer - a
non-group, officially deleted/discontinued/whatever yonks ago - and my
news reader won't allow me to followup posts with invalid groups in the
"Newsgroups:" header line).

For .zip, snarf the Info-Zip Group's unzip source (available at any good
DOS ftp site).  It handles .zips, be they "straight" or self-x'ing.  I
think it has something to do with the "central directory" structure,
which either resides at the very end of any zip file or which is pointed
to by a pointer at the .zips end.

Good luck with the others.    8-)

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 Nick FitzGerald, PC Applications Consultant, CSC, Uni of Canterbury, N.Z.
 n.fitzgerald@csc.canterbury.ac.nz    (64)(3)  642-337 Voice,  642-332 FAX

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Path: arc1-ca.pugleaf.net!sparky!uunet!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!cs.utexas.edu!wupost!waikato.ac.nz!canterbury.ac.nz!cctr132
Newsgroups: alt.msdos.programmer
Subject: Re: Need info on archive file formats
Message-ID: <1992Jul23.122355.6023@csc.canterbury.ac.nz>
From: cctr132@csc.canterbury.ac.nz (Nick FitzGerald, CSC, Uni. of Canterbury, NZ)
Date: 23 Jul 92 12:23:55 +1200
Organization: University of Canterbury, Christchurch, New Zealand
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