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#!/usr/bin/perl
#
# Copyright 2014 Pierre Mavro <deimos@deimos.fr>
# Copyright 2014 Vivien Didelot <vivien@didelot.org>
#
# Licensed under the terms of the GNU GPL v3, or any later version.
#
# This script is meant to use with i3blocks. It parses the output of the "acpi"
# command (often provided by a package of the same name) to read the status of
# the battery, and eventually its remaining time (to full charge or discharge).
#
# The color will gradually change for a percentage below 85%, and the urgency
# (exit code 33) is set if there is less that 5% remaining.
use strict;
use warnings;
use utf8;
my $acpi;
my $status;
my $percent;
my $ac_adapt;
my $full_text;
my $short_text;
my $bat_number = $ENV{BAT_NUMBER} || 0;
my $label = $ENV{LABEL} || "";
# read the first line of the "acpi" command output
open (ACPI, "acpi -b 2>/dev/null | grep -v ' 0%' |") or die;
$acpi = <ACPI>;
close(ACPI);
# fail on unexpected output
if (not defined($acpi)) {
# don't print anything to stderr if there is no battery
exit(0);
}
elsif ($acpi !~ /: ([\w\s]+), (\d+)%/) {
die "$acpi\n";
}
$status = $1;
$percent = $2;
$full_text = "$label$percent%";
if ($status eq 'Discharging') {
$full_text .= ' DIS';
} elsif ($status eq 'Charging') {
$full_text .= ' CHR';
} elsif ($status eq 'Unknown') {
open (AC_ADAPTER, "acpi -a |") or die;
$ac_adapt = <AC_ADAPTER>;
close(AC_ADAPTER);
if ($ac_adapt =~ /: ([\w-]+)/) {
$ac_adapt = $1;
if ($ac_adapt eq 'on-line') {
$full_text .= ' ONL';
} elsif ($ac_adapt eq 'off-line') {
$full_text .= ' DIS';
}
}
}
$short_text = $full_text;
if ($acpi =~ /(\d\d:\d\d):/) {
$full_text .= " ($1)";
}
# print text
print "$full_text\n";
print "$short_text\n";
# consider color and urgent flag only on discharge
if ($status eq 'Discharging') {
if ($percent < 20) {
print "#FF0000\n";
} elsif ($percent < 40) {
print "#FFAE00\n";
} elsif ($percent < 60) {
print "#FFF600\n";
} elsif ($percent < 85) {
print "#A8FF00\n";
}
if ($percent < 5) {
exit(33);
}
}
exit(0);