#!/bin/sh

# ce -- center text

usage() { echo usage: $0 [-cols] text ... 1>&2; exit 1; }

case "$1" in
-*)	cols=${1#-}
	[ "$cols" -gt 0 ] || usage
	shift ;;
*)	cols=`tput cols`
	[ "$cols" -le 80 ] || cols=80
	;;
esac

[ $# -gt 0 ] || usage
len=`echo "$@" | wc -c`
max=$(((cols - len) / 2))
i=0
while [ $((i++)) -lt $max ]; do
	printf ' '
done
echo "$@"