NetBSD/etc/rc.subr

#	$NetBSD: rc.subr,v 1.5 1998/02/28 22:56:11 lukem Exp $
# functions used by various rc scripts

#
# checkyesno
#	Test $1 variable, and warn if not set to YES or NO.
#	return 0 if it's "yes" (et al), nonzero otherwise
#
checkyesno() {
	eval value=\$${1}
	case $value in

		#	"yes", "true", "on", or "1"
	[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
		return 0
		;;

		#	"no", "false", "off", or "0"
	[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0)
		return 1
		;;

	*)
		logger -s "WARNING: \$${1} is not set properly."
		return 1
		;;
	esac
}