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

ui=petitboot-nc
shell=sh
getty=/sbin/getty
use_getty=0
detach=0

usage() {
	cat >&2 <<EOF
pb-console [OPTIONS] -- [ARGS]
OPTIONS
     -d, --detach
             Start in a detached (background) state.

     -g, --getty[=PATH]
             Start a getty (specified by PATH, otherwise $getty),
             passing additional ARGS to the getty process

     -s, --shell=PATH
             Use PATH as the exit-to-shell shell

     -u, --ui=PATH
             Use PATH as the petitboot UI

     -h, --help
             Print a help message.
EOF
	exit 1
}

opts=$(getopt --options 'hdg::s:u:' \
              --long 'help,detach,getty::,shell:,ui:' \
              -- "$@")
[ $? = 0 ] || exit 1

eval set -- "$opts"

while :
do
	case "$1" in
	-d | --detach)
		detach=1
		shift
		;;
	-g | --getty)
		use_getty=1
		getty_arg="$2"
		shift 2
		;;
	-s | --shell)
		shell="$2"
		shift 2
		;;
	-u | --ui)
		ui="$2"
		shift 2
		;;
	--help | -h)
		usage
		;;
	--)
		shift
		break
		;;
	*)
		echo "getopt error"
		exit 1
	esac
done

if [ "$use_getty" = 1 ]
then
	if [ -n "$getty_arg" ]
	then
		getty="$getty_arg"
	fi
	if [ "$detach" = 1 ]
	then
		$getty -l $0 "$@" &
		exit
	else
		exec $getty -l $0 "$@"
	fi
fi

for f in /etc/environment /etc/locale
do
	if [ -e "$f" ]
	then
		export $(cat "$f")
	fi
done

while :
do
	$ui
	reset
	echo "Exiting petitboot. Type 'exit' to return."
	$shell
done