X-Git-Url: https://ruderich.org/simon/gitweb/?p=config%2Fdotfiles.git;a=blobdiff_plain;f=bin%2Fbattery.pl;h=0a802e8f31a7605dc37a2dbcfe28408c2dfe9f47;hp=0bdaae04c1d8829a33a0edaf2e8a4fb709ae5289;hb=03ca50de1ca1b158d17b6bd4458ff6acb9a5114f;hpb=77e20192f619f168bd22c09757dc09580e533cea

diff --git a/bin/battery.pl b/bin/battery.pl
index 0bdaae0..0a802e8 100755
--- a/bin/battery.pl
+++ b/bin/battery.pl
@@ -20,15 +20,26 @@ use strict;
 use warnings;
 
 
-my $path = '/sys/class/power_supply/BAT0/uevent';
+if (scalar @ARGV != 1 and (scalar @ARGV != 2 or not $ARGV[0] =~ /-[st]/)) {
+    print STDERR "Usage: $0 [-s | -t] <path/to/device>\n";
+    print STDERR "\n";
+    print STDERR "Normally this is /sys/class/power_supply/BAT*.\n";
+    exit 1;
+}
+if (scalar @ARGV == 1) {
+    @ARGV = ('', $ARGV[0]);
+}
+
+my $path = "$ARGV[1]/uevent";
 
 # No battery available.
-if (! -e $path) {
+if (not -e $path) {
+    print STDERR "'$path' not found.\n";
     exit 1;
 }
 
-my $screen_mode = (defined $ARGV[0] and $ARGV[0] eq '-s');
-my $tmux_mode   = (defined $ARGV[0] and $ARGV[0] eq '-t');
+my $screen_mode = ($ARGV[0] eq '-s');
+my $tmux_mode   = ($ARGV[0] eq '-t');
 
 my %battery;