#! /bin/bash
#
# center - center a group of lines
#
# tabs in the lines might cause this to look a little bit off
#
#
#  Chet Ramey <chet.ramey@case.edu>
#
#  Copyright 1999 Chester Ramey
#
#   This program is free software; you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation; either version 2, or (at your option)
#   any later version.
#
#   TThis program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program; if not, write to the Free Software Foundation,
#   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

width=${COLUMNS:-80}

if [[ $# == 0 ]]
then
	set -- /dev/stdin
fi

for file
do
	while read -r
	do
		printf "%*s\n" $(( (width+${#REPLY})/2 )) "$REPLY"
	done < $file
done

exit 0
