Add capibarra (sway status bar)

1 files changed, 160 insertions, 0 deletions

diff --git a/capibarra b/capibarra
new file mode 100755
index 0000000..90189c1
--- /dev/null
+++ b/capibarra
@@ -0,0 +1,160 @@
+#!/usr/bin/env perl
+
+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) {
+        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 ? '🛜' : '🌐', $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" ? '⚡' : '';
+        seek($bstatf, 0, 0);
+        my $batlevel = <$bcapf>;
+        chomp $batlevel;
+        seek($bcapf, 0, 0);
+        return pango_warning(sprintf("🔋%s%s", $batlevel, $batcharging), $batlevel < 10);
+    }
+);
+
+my %mod_audio = (
+    name => 'AUDIO',
+    period => 2,
+    compute => sub {
+        return sprintf "%s%s",
+            pango_onoff('🔊', do {`volctl vol-on`; $? == 0}),
+            pango_onoff('🎤', 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(' · ', @sections));
+
+    $counter += 1;
+    sleep 1;
+}
+
+# vim: set sw=4