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#!/usr/bin/perl
#
# Copyright 2014 Marcelo Cerri <mhcerri at gmail dot com>
#
# 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 3 of the License, or
# (at your option) any later version.
#
# This 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, see <http://www.gnu.org/licenses/>.
use strict;
use warnings;
use utf8;
use Getopt::Long;
use File::Basename;
# Default values
my $indicator = $ENV{BLOCK_INSTANCE} || "CAPS";
my $color_on = "#00FF00";
my $color_off = "#222222";
sub help {
my $program = basename($0);
printf "Usage: %s [-c <color on>] [-C <color off>]\n", $program;
printf " -c <color on>: hex color to use when indicator is on\n";
printf " -C <color off>: hex color to use when indicator is off\n";
printf "\n";
printf "Note: environment variable \$BLOCK_INSTANCE should be one of:\n";
printf " CAPS, NUM (default is CAPS).\n";
exit 0;
}
Getopt::Long::config qw(no_ignore_case);
GetOptions("help|h" => \&help,
"c=s" => \$color_on,
"C=s" => \$color_off) or exit 1;
# Key mapping
my %indicators = (
CAPS => 0x00000001,
NUM => 0x00000002,
);
# Retrieve key flags
my $mask = 0;
open(XSET, "xset -q |") or die;
while (<XSET>) {
if (/LED mask:\s*([0-9]+)/) {
$mask = $1;
last;
}
}
close(XSET);
# Output
printf "%s\n", $indicator;
printf "%s\n", $indicator;
if (($indicators{$indicator} || 0) & $mask) {
printf "%s\n", $color_on;
} else {
printf "%s\n", $color_off;
}
exit 0
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