#! /bin/sh

if [ ! -d .svn ]
then
	echo "no .svn directory found"
	exit 1
fi

revision=`echo $1 | sed -e 's/^/fli4l-/;s/\./_/g'`
shift
eval "`grep url .svn/entries`"
tag=`echo $url | sed -e "s,^\(.*\)\(trunk\|branches\|tags\).*,\1tags,"`
if [ "$revision"  = fli4l- ]
then
	echo "usage: $0 tag [ file | dir ]"
	echo "available tags are:"
	svn ls $tag
	exit 1
fi

tag=`echo $url | sed -e "s,^\(.*\)\(trunk\|branches\|tags\).*,\1tags/$revision,"`
if [ "$1" ]
then
	while [ "$1" ]
	do
		svn diff --diff-cmd /home/fli4l/bin/diff-wrapper $tag/$1 $url/$1
		shift
	done
else
	svn diff --diff-cmd /home/fli4l/bin/diff-wrapper $tag $url
fi