-#!/system/bin/sh
+#!/bin/sh
+set -e -u
-if [ "$#" != "0" ]; then
- echo "usage: termux-battery-status"
- echo "Get the status of the device battery."
- exit 1
-fi
+SCRIPTNAME=termux-battery-status
+show_usage () {
+ echo "Usage: $SCRIPTNAME"
+ echo "Get the status of the device battery."
+ echo ""
+ exit 0
+}
-termux-api BatteryStatus
+while getopts :h option
+do
+ case "$option" in
+ h) show_usage;;
+ ?) echo "$SCRIPTNAME: illegal option -$OPTARG"; exit 1;
+ esac
+done
+shift $(($OPTIND-1))
+
+if [ $# != 0 ]; then echo "$SCRIPTNAME: too many arguments"; exit 1; fi
+
+@TERMUX_API@ BatteryStatus