A variety of simple automation scripts and enhancements to Sway and i3.
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11 KiB

#!/usr/bin/perl -w
# TODO: I reworked the argument parsing and broke the formatted output
# It was terrible in the first place, so rework that too.
#
# Work on a `date`-like format like:
# "+%c/%m = %p\%"
# %c - Current absolute
# %m - Maximum absolute value
# %p - Current percent
#
# to output like:
# 1000/10000 = 10%
#
# Create a new array of hashes to classify the ARGV elements, eg:
# $0 + "+%c" -= 10 +=4 =1 =100 "+%p"
# [
# {
# "action" => "increment",
# "value" => 1
# },{
# "action" => "print",
# "value" => "+%c"
# },{
# "action" => "decrement",
# "value" => 10
# },{
# "action" => "increment",
# "value" => 4
# },{
# "action" => "set",
# "value" => 1
# },{
# "action" => "set",
# "value" => 100
# },{
# "action" => "print",
# "value" => "+%p"
# }
# ]
#
# Process all of these in order. Add an option to show/hide action output
# so you can either get (shown):
# 100% 100000 90% 94% 1% 100% 100%
# or (hidden):
# 100000 100%
#
# All of the events would still occur between the output values.
#
# Add a delay option between increments and a delay between actions (does not
# apply to 'print'). This could be used to make a gradual sweep with:
#
# --delay-increment=100 --delay-action=0
#
# or to blink with:
#
# --delay-increment=0 --delay-action=1000
#
# With the latter, you could even have the backlight do morse code:
# clear | S ( . . . ) |pause| O ( _ _ _ ) |pause|
# =0 =100 =0 =100 =0 =100 =0 =0 =100 =100 =0 =100 =100 =0 =100 =100 =0 =0 ...
#
# Perhaps add an argument to repeat indefinitely. This is all getting a bit
# silly, but kinda fun to think about.
# Files containing current and max brightness values
my $cur_file = "/sys/class/backlight/intel_backlight/brightness";
my $max_file = "/sys/class/backlight/intel_backlight/max_brightness";
my $last_file = "/home/jpm/.config/blc.last";
sub to_percent
{
my $value = shift;
$value = int($value/get_max()*100);
return $value . '%';
}
sub get_offset
{
return int(get_max()/100);
}
sub get_current
{
open(my $c,'<',"$cur_file");
my $current = <$c>;
close $c;
chomp $current;
return $current;
}
sub get_max
{
open(my $m,'<',"$max_file");
my $max = <$m>;
close $m;
chomp $max;
return $max;
}
sub get_min
{
return int((get_max()/100)+2);
}
sub writable
{
if (! -w $cur_file) {
die "You don't have permission to write $cur_file\n";
}
return 1;
}
sub increment
{
if (writable()) {
my $current = get_current();
my $max = get_max();
my $target = $current+get_offset();
if ($target > $max) {
$target = $max;
}
open(my $c,'>',"$cur_file");
print $c $target;
close $c;
return $target;
}
}
sub decrement
{
if (writable()) {
my $current = get_current();
my $min = get_min();
my $target = $current-get_offset();
if ($target < $min) {
$target = $min;
}
open(my $c,'>',"$cur_file");
print $c $target;
close $c;
return $target;
}
}
sub set
{
my $value = shift;
if (writable()) {
$current = get_current();
if ($value > $current) {
for (my $i=$current;$i<=$value;$i++) {
open(my $c,'>',"$cur_file");
print $c $i;
close $c;
}
} else {
for (my $i=$current;$i>=$value;$i--) {
open(my $c,'>',"$cur_file");
print $c $i;
close $c;
}
}
return $value;
}
}
sub help
{
print "
Backlight Control
Usage: blc.pl [--silent|--notify] [OPTION] [VALUE]
With no option the backlight information is printed as JSON.
Output printed to STDOUT unless:
--silent Do not display output (overrides --notify)
--notify Send output to notification daemon. --notify=N will
change the display duration in ms. Default is 200ms
Output option must preceed the first Action option.
Actions:
= VALUE Set backlight to specific value. VALUE greater than
100 will be treated as absolute value. VALUE eqaul to
or less than 100 will be treated as a percentage
+ Increment by 1%
+= VALUE Increment by VALUE percent
- Decrement by 1%
-= VALUE Decrement by VALUE percent
Actions corrected to 1% or 100% if over or under. All actions
provide output as a percentage, with the % symbol.
Final percentage printed as below, skipping other options.
Print:
== Print current absolute value
^ Print maximum absolute value
% Print current percentage (does not include % symbol)
--help Help (not impacted by --silent or --notify)
--HELP Advanced help (same as above)
Any other option will be printed literally";
}
sub advanced
{
$current = get_current();
$max = get_max();
print ".
Print functions can be strung together but command will exit
with the first non-print option. eg.
\$ blc.pl == / ^
21/100
\$ blc.pl == ++
('==' ignored)
(Backlight incremented)
Escape options with \\ in quotes to display them literally. eg.
\$ blc.pl == / ^ '\\=' % \'\\%\'
" . $current . "/" . $max . "=" . int($current/$max*100) . "%
Only one \'\\' is removed per block. eg.
\$ blc.pl '\\% \\'
% \\
";
}
my $current = get_current();
my (@output, $target, $silent, $notify);
my $operation_found = 0;
if (scalar @ARGV) {
while ($arg = shift) {
if ($arg eq '%') {
push @output,int(get_current()/get_max()*100);
} elsif ($arg eq '^') {
push @output,get_max();
} elsif ($arg eq '==') {
push @output,get_current();
} elsif ($arg eq '--help') {
help();
print " (see --HELP).\n\n";
exit();
} elsif ($arg eq '--HELP') {
help();
advanced();
exit();
} elsif ($arg eq '--silent') {
$silent = 1;
} elsif ($arg =~ /^--notify/) {
$notify = 1;
if ($arg =~ /=[0-9]+$/) {
$duration = $arg;
$duration =~ s/.*=([0-9]+)/$1/;
} else {
$duration = 1000;
}
} elsif ($arg eq '+') {
unshift(@ARGV,1);
unshift(@ARGV,'+=');
} elsif ($arg =~ /^\+=/) {
my $offset;
if ($arg =~ m/^\+=(.+)$/) {
$offset = $1;
} else {
$offset = shift || die "+= without accompanying offset value\n";
}
unless ($offset =~ /^\d+$/) {
die "+= <value> is not a number ($offset)\n";
}
for (my $j=0;$j<$offset;$j++) {
$target = increment();
@output = to_percent($target);
}
$operation_found = 1;
} elsif ($arg eq '-') {
unshift(@ARGV,1);
unshift(@ARGV,'-=');
} elsif ($arg =~ /^-=/) {
my $offset;
if ($arg =~ m/^-=(.+)$/) {
$offset = $1;
} else {
$offset = shift || die "-= without accompanying offset value\n";
}
unless ($offset =~ /^\d+$/) {
die "-= <value> is not a number ($offset)\n";
}
for (my $j=0;$j<$offset;$j++) {
$target = decrement();
@output = to_percent($target);
}
$operation_found = 1;
} elsif ($arg =~ m/^=/) {
my $value;
if ($arg =~ m/^=(.+)$/) {
$target = $1;
} else {
$target = shift || die "= without accompanying absolute value\n";
}
unless ($target =~ /^\d+$/) {
die "= <value> is not a number ($target)\n";
}
if ($target < 1) {
$target = set(get_min());
} elsif ($target > get_max()) {
$target = set(get_max());
} elsif ($target > 100) {
$target = set($target);
} else {
$target = set(
int((get_max()*$target/100)+1)
);
}
@output = to_percent($target);
$operation_found = 1;
} else {
push(@output,$arg);
}
}
} else {
@output = (
'{"Backlight":{"Max":"'
. get_max()
. '","Current":"'
. get_current()
. '","Percentage","'
. int(get_current()/get_max()*100)
. '%"}}'
);
}
open(my $fh,'>',$last_file);
print $fh get_current();
close($fh);
print $_."\n" foreach(@output);
if ($silent) {
exit();
} elsif ($notify) {
my $concat = '';
foreach (@output) {
$concat .= $_;
}
=pod
use Gtk2::Notify -init, "Backlight";
my $notification = Gtk2::Notify::new('Backlight', $concat, '', "notification-display-brightness");
$notification->set_hint_string('x-canonical-private-synchronous','blc');
$notification->set_urgency('NOTIFY_URGENCY_LOW');
$notification->set_hint_int32('value',(split('%',$concat))[0]);
$notification->set_timeout($duration);
$notification->show();
exit;
print "notify-send --urgency=normal"
. ' --icon="notification-display-brightness"'
. ' --hint=string:x-canonical-private-synchronous:blc'
. ' --expire-time=' . $duration
. ' "Backlight"'
. ' "' . $concat . " '" . join("','", @output) . "'\"";
system "notify-send --urgency=normal"
. ' --icon="notification-display-brightness"'
. ' --hint=string:x-canonical-private-synchronous:blc'
. ' --hint=int:value:' . (split('%',$concat))[0]
. ' --expire-time=' . $duration
. ' "' . $concat . "\"";
=cut
exit();
} else {
print foreach @output;
print "\n";
exit();
}