herbstluftwm: panel: add battery information

config/herbstluftwm/panel.sh

@@ -83,6 +83,25 @@ function cpu() {
 	echo -n $(icon temp yellow) ${cpu}
 }
 
+# BATTERY
+function battery() {
+	if [ "$HOSTNAME" != warthog ]; then
+		return
+	fi
+
+	status=$(acpi -a | cut -d':' -f2)
+	battery=$(acpi -b | cut -d, -f2 | sed -e 's/[^0-9]//g')
+	if [[ $status == " on-line" ]]; then
+		echo -n $(icon ac2 brightblue) ${battery}%
+	elif [[ $battery -le 20 ]]; then
+		echo -n $(icon battery_horz1 red) ${battery}%
+	elif [[ $battery -le 65 ]]; then
+		echo -n $(icon battery_horz2 yellow) ${battery}%
+	else
+		echo -n $(icon battery_horz3 green) ${battery}%
+	fi
+}
+
 hc pad $monitor $panel_height
 
 {
@@ -151,7 +170,7 @@ hc pad $monitor $panel_height
 		right=""
 
 		# custom functions
-		for func in cpu; do
+		for func in cpu battery; do
 			right="${right} $(${func})"
 		done