#!/usr/bin/env perl
# $XTermId: 256colors.pl,v 1.6 2017/01/22 18:34:06 tom Exp $
# -----------------------------------------------------------------------------
# this file is part of xterm
#
# Copyright 1999-2014,2017 by Thomas E. Dickey
#
#                         All Rights Reserved
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
# Except as contained in this notice, the name(s) of the above copyright
# holders shall not be used in advertising or otherwise to promote the
# sale, use or other dealings in this Software without prior written
# authorization.
# -----------------------------------------------------------------------------

use strict;
use warnings;

# This uses 33 print-lines on an 80-column display.  Printing the numbers in
# hexadecimal would make it compact enough for 24x80, but less readable.

our ( $bg, $fg );

for ( $bg = 0 ; $bg < 256 ; $bg++ ) {

    # print "\x1b[9;1H\x1b[2J";
    for ( $fg = 0 ; $fg < 256 ; $fg++ ) {
        print "\x1b[48;5;${bg}m\x1b[38;5;${fg}m";
        printf "%03.3d/%03.3d ", $fg, $bg;
    }
    print "\n";
    sleep 1;
}