#!/bin/sh

tag=$(git tag -l|grep ^v[0-9]|tail -n1)
ver=$(echo $tag|sed s/^v//)
dstag=upstream/${ver}+ds

if git diff-index --quiet HEAD --; then
	echo Pristine source for $ver
else
	echo Working directory not clean. exiting.
	exit 1
fi

git rm -qrf debian/
git commit -m "Pristine source of ${ver}+ds"
if git rev-parse -q --verify "refs/tags/${dstag}" >/dev/null; then
	i=0
	while git rev-parse -q --verify "refs/tags/${dstag}_prev${i}" >/dev/null; do
		i=$(($i+1))
	done
	git tag ${dstag}_prev${i} $dstag
	git tag -d $dstag
fi

git tag ${dstag}
git reset --hard HEAD^
