88 lines
3.4 KiB
Perl
88 lines
3.4 KiB
Perl
#!/usr/bin/env perl
|
|
# $XTermId: sgrPushPop.pl,v 1.10 2018/08/02 21:09:46 tom Exp $
|
|
# -----------------------------------------------------------------------------
|
|
# this file is part of xterm, contributed by Dan Thompson
|
|
#
|
|
# Copyright 2018 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 script demonstrates the utility of the [non-standard] SGR push/pop
|
|
# control sequences. The ability to save (on a stack) the current SGR
|
|
# attributes (fg/bg color, bold, etc.) and then later restore them allows
|
|
# [SGR-containing] text from independent sources to be easily composed
|
|
# together, without requiring any sort of global coordination.
|
|
|
|
our (
|
|
$pushSgr, $popSgr, $lib1Fmt,
|
|
$lib2Fmt, $redOnBlack, $blackOnYellow,
|
|
$blueOnGreen, $bg, $fg
|
|
);
|
|
|
|
$pushSgr = "\x1b[#{";
|
|
$popSgr = "\x1b[#}";
|
|
|
|
# lib1Fmt represents a "top-level" program, and controls the current "ambient"
|
|
# fg/bg colors.
|
|
$lib1Fmt = "\x1b[48;5;%sm\x1b[38;5;%sm%03.3d/%03.3d ";
|
|
|
|
# lib2Fmt represents some intermediate library. Note that it contains no SGR
|
|
# control sequences at all.
|
|
$lib2Fmt = "Test stack: %s, %s, %s";
|
|
|
|
# The following represent individual bits of colorized data that come from
|
|
# other, "leaf-level" libraries.
|
|
$redOnBlack = $pushSgr . "\x1b[1;31m\x1b[40m" . "redOnBlack" . $popSgr;
|
|
$blackOnYellow = $pushSgr . "\x1b[30m\x1b[4;43m" . "blackOnYellow" . $popSgr;
|
|
$blueOnGreen = $pushSgr . "\x1b[34m\x1b[42m" . "blueOnGreen" . $popSgr;
|
|
|
|
printf $pushSgr;
|
|
printf "\x1b[40;37mSetting ambient colors to white-on-black\n";
|
|
printf $pushSgr;
|
|
|
|
for ( $bg = 0 ; $bg < 16 ; $bg++ ) {
|
|
for ( $fg = 0 ; $fg < 16 ; $fg++ ) {
|
|
printf $pushSgr;
|
|
printf $lib1Fmt, $fg, $bg, $fg, $bg;
|
|
printf $lib2Fmt, $redOnBlack, $blackOnYellow, $blueOnGreen;
|
|
print " something else";
|
|
printf $popSgr; # keep the newline from bleeding color
|
|
print "\n";
|
|
}
|
|
print "\n";
|
|
}
|
|
printf $popSgr;
|
|
printf "The ambient colors should still be white-on-black.\n";
|
|
printf $popSgr;
|
|
printf "Now we should be back to whatever it was before we got here.\n";
|
|
|
|
1;
|