#!/bin/sh -e

usage()
{
    echo "Usage: $0 [-x TWEAK-SCRIPT ] NAME VERSION (FILE | -C DIR)..."
}

script=:
while getopts x: opt
do
    case $opt in
    x)
	script="$OPTARG"
	;;
    *)
	usage; exit 1
	;;
    esac
done
shift $((OPTIND - 1))

name="$1"
version="$2"
if shift 2
then :
else usage; exit 1
fi

nv=$name-$version
mkdir "$nv"

# arrange cleanup
trap 'rm -rf "$nv"' 0

dir=.
until [ $# = 0 ]; do
    if [ "$1" = -C ]; then
	dir="$2"
	if shift 2; then continue; fi
	echo "$0: -C requires an argument" >&2
	exit 1
    fi
    mkdir -p `dirname "$nv/$1"`
    ln "$dir/$1" "$nv/$1"
    shift
done

$script $name $version

tar -czf "$nv".tar.gz --owner=0 --group=0 --mode=ug+w,a+rX "$nv"