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<TITLE>sane-devel: Re: EOF detection</TITLE>
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<META NAME="Author" CONTENT="Henning Meier-Geinitz (henning@meier-geinitz.de)">
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<META NAME="Subject" CONTENT="Re: EOF detection">
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<H1>Re: EOF detection</H1>
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<!-- received="Tue May 8 11:08:44 2001" -->
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<!-- name="Henning Meier-Geinitz" -->
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<!-- subject="Re: EOF detection" -->
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<STRONG>From:</STRONG> Henning Meier-Geinitz (<A HREF="mailto:henning@meier-geinitz.de?Subject=Re:%20EOF%20detection&In-Reply-To=<20010508202126.A8948@vortex.swb.de>"><EM>henning@meier-geinitz.de</EM></A>)<BR>
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<STRONG>Date:</STRONG> Tue May 08 2001 - 11:21:26 PDT
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<LI><STRONG>Next message:</STRONG> <A HREF="0097.html">Henning Meier-Geinitz: "Re: Problems with 2.4.4 kernel and scanning"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0095.html">Nick Lamb: "Re: EOF detection"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0093.html">Oliver Rauch: "Re: EOF detection"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0100.html">Nick Lamb: "Re: EOF detection"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0100.html">Nick Lamb: "Re: EOF detection"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0101.html">Oliver Rauch: "Re: EOF detection"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0106.html">Marian Eichholz: "Re: EOF detection"</A>
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<P>
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Hi,
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<BR>
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<P>On Tue, May 08, 2001 at 06:01:47PM +0200, Oliver Rauch wrote:
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<BR>
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<EM>> > "The number of bytes returned is stored in *len. A backend must set
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</EM><BR>
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<EM>> > this to zero when the call fails (i.e., when a status other
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</EM><BR>
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<EM>> > than SANE_STATUS_GOOD is returned)"
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</EM><BR>
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<EM>> >
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</EM><BR>
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<EM>> > So you can't return data if you don't return SANE_STATUS_GOOD.
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> Yes, but you also can argue that SANE_STATUS_EOF is not a failure,
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</EM><BR>
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<EM>> only the info that there is no more data than returned by
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</EM><BR>
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<EM>> this sane_read command.
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</EM><BR>
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<P>Depends on what "i.e." is supposed to mean.
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<BR>
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<P><EM>> It does not hurt to mention it explictly.
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</EM><BR>
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<P>I think that's more clear:
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<BR>
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<P> The number of bytes returned is stored in *len. A backend must set
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<BR>
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this to zero when a status other than SANE_STATUS_GOOD is returned.
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<BR>
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<P>Is this clear enough or should we add another sentence concerning
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<BR>
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SANE_STATUS_EOF (in addition to "SANE_STATUS_EOF: No more data is
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<BR>
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available for the current frame.")?
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<BR>
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<P>Bye,
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<BR>
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Henning
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<BR>
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<BR>
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<P><P><PRE>
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--
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Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20EOF%20detection&In-Reply-To=<20010508202126.A8948@vortex.swb.de>">majordomo@mostang.com</A>
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</PRE>
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<HR NOSHADE>
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<UL>
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<!-- next="start" -->
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<LI><STRONG>Next message:</STRONG> <A HREF="0097.html">Henning Meier-Geinitz: "Re: Problems with 2.4.4 kernel and scanning"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0095.html">Nick Lamb: "Re: EOF detection"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0093.html">Oliver Rauch: "Re: EOF detection"</A>
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<!-- nextthread="start" -->
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0100.html">Nick Lamb: "Re: EOF detection"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0100.html">Nick Lamb: "Re: EOF detection"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0101.html">Oliver Rauch: "Re: EOF detection"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0106.html">Marian Eichholz: "Re: EOF detection"</A>
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<EM>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Tue May 08 2001 - 11:10:45 PDT</EM>
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