#!/bin/bash

PKG=old

if [ "$1" == "" -o "$2" == "" ]; then
	echo "Use: release OLDREL NEWREL"
	echo "Run from the repo root"
	exit
fi

OLDREL=$1
NEWREL=$2

TARGZBALL="$PKG-$NEWREL.tar.gz"
TARBZBALL="$PKG-$NEWREL.tar.bz2"
RELDIR="../$NEWREL"

if [ -d $RELDIR ]; then
	echo "$RELDIR already exists!"
	exit
fi

echo "* making $RELDIR"
mkdir $RELDIR > /dev/null 2> /dev/null

echo "* darcs dist"
darcs dist -d $PKG-$NEWREL
mv $TARGZBALL $RELDIR

echo "* darcs changes"
darcs changes --from-tag $OLDREL > $RELDIR/Changelog-$NEWREL

echo "* darcs diff"
darcs diff -u --from-tag $OLDREL > $RELDIR/$PKG-$NEWREL.patch

echo "* unpack"
cd $RELDIR
tar -zxf $TARGZBALL

echo "* tar.bz2"
tar -cjf $TARBZBALL $PKG-$NEWREL