From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mauricio Silveira <msilveira@linuxbr.com>
Subject: Re: Compressed Tar : stop on first occurrence
Date: Fri, 20 Oct 2006 16:31:07 -0200
Message-ID: <453915EB.6090008@linuxbr.com>
References: <Pine.LNX.4.58.0610150922480.1087@yossarian.aniota.com> <4538C4B8.8020707@linuxbr.com> <Pine.LNX.4.58.0610200927320.1674@yossarian.aniota.com>
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To: terry white <twhite@aniota.com>
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terry white wrote:
> ... ciao:
>
> : on "10-20-2006" "Mauricio Silveira" writ:
> : I'm wondering if there's any way to get tar to stop immediately after
> : the extraction of a file on compressed tar files. eg: I pack a big tgz
>
>     'man tar' offers:
>
>        -T, --files-from F
>               get names to extract or create from file F
>
>
> : when I run "tar xf file.tgz --occurrence index.txt"
>
>     HOWEVER , i'm using a gnu flavour 'tar', which does "not" list
> '--occurrence' as an option, so, the suggestion above may not apply ..
I know 1.13 doesn't have this option (at least on command line help).

I did some research on the source code for tar 1.15.1 and found a place 
to insert a simple exit() when using "--occurrence filename" to force 
tar to quit on a "match".

I think this is the way tar should behave... compressed or non 
compressed files, tar actions behavior should be the same.
I think I should send tar this issue as a bug... as far as tar waits for 
its child "compress program" pipe to end.

Attached file "tar-1.15.1-compressed-archive-quit-on-ocurrence.diff" 
(such a long name huh?).


Thanks,

Mauricio

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--- list.c.org	2006-10-20 15:09:17.000000000 -0200
+++ list.c	2006-10-20 15:07:51.000000000 -0200
@@ -199,6 +199,7 @@
     }
   while (!all_names_found (&current_stat_info));
 
+  exit(EXIT_SUCCESS);
   close_archive ();
   names_notfound ();		/* print names not found */
 }

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begin:vcard
fn:Mauricio Silveira
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title:Linux Consultant / Developer
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