Re: [PATCH] cg-export to tarball

[Rene Scharfe <rene.scharfe@lsrfire.ath.cx>]

Petr Baudis schrieb:
> Dear diary, on Tue, Apr 26, 2005 at 09:12:46AM CEST, I got a letter 
> where "Joshua T. Corbin" <jcorbin@wunjo.org> told me that...
> 
>> The following patch to cg-export will simlpy create a tarball if 
>> the argument ends in .tar.gz, .tar.bz2, or .tar.
>> 
>> Signed-off-by; Joshua T. Corbin <jcorbin@wunjo.org>
> 
> 
> What about cooperating with Rene Scharfe and using his tar-tree? I 
> didn't actually try it yet (not even look at the code so far), it'd 
> be cool if someone would give it some review and testing.

Yes, this looks like a job for tar-tree.  You could do something like this:

   destbasename=${destdir##*/}
   case "$destdir" in
   *.tar)
       tar-tree $id "${destbasename%.tar}" > "$destdir"
       ;;
   *.tgz)
       tar-tree $id "${destbasename%.tgz}" | gzip -9 > "$destdir"
       ;;
   # *.tar.gz, *.tar.bz2, ...
   *)
       mkdir -p "$destdir" || die "cannot create $destdir"
       export GIT_INDEX_FILE="$destdir/.git-index"
       read-tree $id
       checkout-cache "--prefix=$destdir/" -a
       rm "$GIT_INDEX_FILE"
       ;;
   esac

The second parameter to tar-tree is an optional prefix for all paths
inside the archive (official kernel tarballs always have linux-2.x.xx as
a prefix).  It makes some sense to set this value to the archive
filename, "cg-export linux-2.6.12-rc3.tar.bz2" would than work as expected.

What do you think?  If you like it I'll cook up a patch later unless you
beat me to it.

Thanks,
Rene