#!/bin/sh -e

if [ -r /etc/sysconfig/xen ]; then
	. /etc/sysconfig/xen
fi

if [ -n "$TOOLSTACK" ]; then
	cmd=$(command -v "$TOOLSTACK" || :)
	if [ -z "$cmd" ]; then
		echo "WARING:  Can't find toolstack $TOOLSTACK, fallback to default!" >&2
		TOOLSTACK=
	fi
fi

if [ -z "$TOOLSTACK" ]; then
	cmd_xl=$(command -v xl || :)
	cmd_xm=$(command -v xm || :)
	if [ -n "$cmd_xl" ]; then
		cmd="$cmd_xl"
	elif [ -n "$cmd_xm" ]; then
		cmd="$cmd_xm"
	else
		echo "ERROR:  Toolstack not specifed and nothing detected, bailing out!" >&2
		exit 127
	fi
fi

if [ "$1" == "toolstack" ]; then
	echo $cmd
	exit 0
fi

exec "$cmd" "$@"