Date: Sat, 24 Apr 2004 15:06:09 -0700 From: Tim Kientzle <tim@kientzle.com> To: Don Lewis <truckman@FreeBSD.org> Cc: current@FreeBSD.org Subject: Re: Amanda, bsdtar, and libarchive Message-ID: <408AE4D1.4060609@kientzle.com> In-Reply-To: <200404242152.i3OLq87E057024@gw.catspoiler.org> References: <200404242152.i3OLq87E057024@gw.catspoiler.org>
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Don Lewis wrote: > On 24 Apr, Tim Kientzle wrote: > >>If you want reasonably accurate estimates without reading the >>file data, you could ... build some sort of "size estimate" capability into >>libarchive ... > > There are three variations on the archive size estimate: > Fast and exact > Fast and approximate > Slow and exact You can already do the last one with libarchive; just register an output function that counts the bytes but doesn't do anything. Done. "Fast and exact" is simply not possible in general, so I don't think I would bother with that option at all. Incorporating some sort of estimator into the API does sound like a good idea. I'll have to think about it some to see if I can figure out a good way to do that. Thanks for the feedback, Tim
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