Re: post-update script to update wc - suggestions welcome

[Sam Vilain <sam@vilain.net>]

Sam Vilain wrote:
> #!/bin/sh
> #
> # An example hook script to prepare a packed repository for use over
> # dumb transports.
> #
> # To enable this hook, make this file executable by "chmod +x post-update".
> 
> git-update-server-info
> 
> ref=$1

In particular, if anyone can think of a clever and reliable way to
detect whether the repository is bare or not (perhaps the presence of
$GIT_DIR/index ?), then this could conceivably become the default
example hook script, by making the below bit conditional on whether this
looks like a non-bare repository.

Sam.

> active=`git-symbolic-ref HEAD`
> if [ "$ref" = "$active" ]
> then
>   echo "Pushing to checked out branch - updating working copy" >&2
>   export GIT_DIR=`cd $GIT_DIR; pwd`
>   cd ..
>   success=
>   if git-diff-files
>   then
>     git-diff-index -z -R --name-status HEAD | perl -n0 -le \
> 	'if ($z^=1) {
> 		$status=$_;
> 	 }
> 	 else {
>         	$filename=$_;
> 		printf STDERR "$status\t$filename\n";
> 		if($status eq "D"){
> 			unlink($filename)
> 				or die("unlink($filename) failed; $!")
> 		}
>          }' &&
>     git-reset --hard HEAD && success=1
>   fi
>   if [ -z "$success" ]
>   then
>     (
>     echo "Non-bare repository checkout is not clean - not updating it"
>     echo "However I AM going to update the index.  Any in-progress commit"
>     echo "happening in that checkout will be thrown away, but on the bright"
>     echo "side this is probably the least confusing thing for us to do and"
>     echo "at least we're not throwing any files somebody has changed away"
>     git-reset --mixed HEAD
>     echo 
>     echo "This is the new status of the upstream working copy:"
>     git-status
>     ) >&2
>   fi
> fi
> -
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