#!/bin/sh

# create initial jar
[ -z "$2" ] && echo "Error: missing arguments" && exit 1
jar cvf "$@" || exit 1

# open MANIFEST file template in $EDITOR
printf "Class-Path: \nMain-Class: \n" > '/tmp/MANIFEST.MF'
[ -z "$EDITOR" ] && echo "Error: \$EDITOR not set" && exit 1
$EDITOR '/tmp/MANIFEST.MF'

# apply manifest to jar
jar uvfm "$1" '/tmp/MANIFEST.MF'

# remove temporary files
rm '/tmp/MANIFEST.MF'