#!/bin/sh
#
# Petitboot utility script for running a petitboot UI program
# on a console tty.
#

ui=petitboot-nc
shell=sh

detach=0

usage() {
	cat >&2 <<EOF
pb-console [OPTIONS] console_dev
OPTIONS
     -d, --detach
             Start in a detached (background) state.
     -h, --help
             Print a help message.
EOF
	exit 1
}

while [ -n "$1" ]
do
	case "$1" in
	--detach | -d)
		detach=1
		;;
	--help | -h)
		usage
		;;
	--)
		;;
	*)
		console=$1
		;;
	esac
	shift
done

if [ -n "$console" -a "${console#/dev/}" = "$console" ]
then
	console="/dev/$console"
fi

pb_loop() {
	while :
	do
		$ui
		echo "Exiting petitboot. Type 'exit' to return."
		$shell
	done
}

if [ -n "$console" ]
then
	exec <$console >$console 2>&1
fi

if [ "$detach" = 1 ]
then
	(
		pb_loop
	) &
else
	pb_loop
fi