-

#!/bin/sh

log () {
	echo "${0##*/} $(date): $1" >&2
}

die () {
	log "ERROR: $1"
	exit 1
}

usage () {
	echo "${0##*/}: usage: ${0##*/} <stackname> <command> [args [...]]"
}

list_stacks () {
	if [ $# -eq 0 ]; then
		for stack in $HOME/.stack/*; do
			(
			. $stack
			printf "%-20s %s\n" ${stack##*/} $OS_AUTH_URL
			)
		done
		exit
	fi
}

while [ "$1" ]; do
	case $1 in
	(--)	shift
		break
		;;

	(--list|-l)
		list_stacks
		exit 0
		;;

	(-*)	die "unknown option: $1"
		;;

	(*)	break
		;;
	esac
done

if [ $# -lt 2 ]; then
	usage >&2
	exit 2
fi

stack=$1
shift

if ! [ -f $HOME/.stack/$stack ]; then
	echo "No such stack: $stack" >&2
	exit 1
fi

. $HOME/.stack/$stack
exec "$@"