#! /bin/sh

# $FreeBSD: src/share/zoneinfo/yearistype.sh,v 1.1.2.3.8.1 2000/10/25 19:44:09 wollman Exp $
# $DragonFly: src/share/zoneinfo/yearistype.sh,v 1.3 2005/07/13 21:08:07 swildner Exp $

: '@(#)yearistype.sh	7.8'

case $#-$1 in
	2-|2-0*|2-*[!0-9]*)
		echo "$0: wild year - $1" >&2
		exit 1 ;;
esac

case $#-$2 in
	2-even)
		case $1 in
			*[24680])			exit 0 ;;
			*)				exit 1 ;;
		esac ;;
	2-nonpres|2-nonuspres)
		case $1 in
			*[02468][048]|*[13579][26])	exit 1 ;;
			*)				exit 0 ;;
		esac ;;
	2-odd)
		case $1 in
			*[13579])			exit 0 ;;
			*)				exit 1 ;;
		esac ;;
	2-uspres)
		case $1 in
			*[02468][048]|*[13579][26])	exit 0 ;;
			*)				exit 1 ;;
		esac ;;
	2-*)
		echo "$0: wild type - $2" >&2 ;;
esac

echo "$0: usage is $0 year even|odd|uspres|nonpres|nonuspres" >&2
exit 1