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#!/usr/bin/env perl
#
# Dependencies: iproute2 iw volctl
#
################################################################################
use strict;
use warnings;
use feature 'signatures';
use Time::HiRes qw<gettimeofday>;
# Turn off buffering
$| = 1;
################################################################################
# Formatting
sub pango_warning($txt, $enabled) {
return $enabled ? "<span background='red'>$txt</span>" : $txt;
}
sub pango_onoff($txt, $on) {
return $on ? $txt : "<span strikethrough='true'>$txt</span>";
}
sub render_iface($is_wireless, $name, $status, $addr) {
my $extra = '';
$extra .= " $addr" if $addr;
if ($is_wireless and $status eq 'UP') {
my ($ssid) = `iw dev $name link` =~ /SSID: ([^\n]*).*/;
my ($dbm) = `iw dev $name link` =~ /signal: ([0-9-]+ dBm)/;
$extra .= ' (' . $ssid . ', ' . $dbm . ')';
}
return pango_onoff($is_wireless eq 1 ? '๐' : '๐', $status eq 'UP') . $extra;
}
################################################################################
# Profiling
sub show_time_delta($section, $time0, $computed) {
my (undef, $time) = gettimeofday();
my $diff = ($time - $time0) / 1000;
my $extra = $computed ? ' (COMPUTED)' : '';
printf STDERR "Spent $diff milliseconds @ $section$extra\n";
}
################################################################################
# Modules
open(my $loadf, '<', '/proc/loadavg');
my %mod_cpu = (
name => 'CPU',
period => 5,
compute => sub {
read($loadf, my $loads, 14);
seek($loadf, 0, 0);
return sprintf ("CPU %s/%s/%s", split ' ', $loads);
}
);
my %mod_mem = (
name => 'MEMORY',
period => 5,
compute => sub {
my $mused = `free | awk '/^Mem:/ {printf("%d", 100 * (\$3/\$2))}'`;
return pango_warning(sprintf("MEM %s%%", $mused), $mused > 90);
}
);
my %mod_net = (
name => 'NETWORK',
period => 4,
compute => sub {
my @wired = ();
my @wireless = ();
for (split("\n", `ip --br a`)) {
next if substr($_, 0, 2) eq 'lo'; # prevent regex
my ($if, $status, $addr) = $_ =~ /^(\S+)\s+(\S+)(?:\s+(\S+))?/;
push @wired, [0, $if, $status, $addr] if (substr($if, 0, 2) eq 'en');
push @wireless, [1, $if, $status, $addr] if (substr($if, 0, 2) eq 'wl');
}
return join ' | ', map { render_iface(@$_) } @wired, @wireless;
}
);
my $BATDIR = glob '/sys/class/power_supply/BAT?';
open(my $bcapf, '<', "$BATDIR/capacity");
open(my $bstatf, '<', "$BATDIR/status");
my %mod_bat = (
name => 'BATTERY',
period => 3,
compute => sub {
my $batcharging = <$bstatf> eq "Charging\n" ? 'โก' : '';
seek($bstatf, 0, 0);
my $batlevel = <$bcapf>;
chomp $batlevel;
seek($bcapf, 0, 0);
return pango_warning(sprintf("๐%s%s", $batlevel, $batcharging), $batlevel < 10);
}
);
my %mod_audio = (
name => 'AUDIO',
period => 2,
compute => sub {
return sprintf "%s%s",
pango_onoff('๐', do {`volctl vol-on`; $? == 0}),
pango_onoff('๐ค', do {`volctl mic-on`; $? == 0});
}
);
my %mod_date = (
name => 'DATE',
period => 2,
compute => sub {
my $date = `date +'%Y-%m-%d %H:%M'`;
chomp $date;
return $date;
}
);
################################################################################
# Main
my @mods = (\%mod_cpu, \%mod_mem, \%mod_net, \%mod_bat, \%mod_audio, \%mod_date);
my %cache;
my $profile = 0;
foreach my $arg (@ARGV) {
if ($arg eq '--profile') {
$profile = 1;
}
}
my $counter = 0;
while (1) {
my @sections;
my (undef, $time0) = gettimeofday() if $profile;
foreach my $mod (@mods) {
my (undef, $time) = gettimeofday() if $profile;
my $result;
if ($counter % $mod->{period} == 0) {
$result = &{$mod->{compute}};
$cache{$mod->{name}} = $result;
} else {
$result = $cache{$mod->{name}};
}
push(@sections, $result);
show_time_delta($mod->{name}, $time, $counter % $mod->{period} == 0) if $profile;
}
show_time_delta('TOTAL', $time0, 0) if $profile;
printf("%s\n", join(' ยท ', @sections));
$counter += 1;
sleep 1;
}
# vim: set sw=4
|
