upower-ksysguardd.sh

#!/bin/bash

# upower-ksysguardd.sh - Script to poll upower tool with a ksysguardd
# compatible interface. Useful with kde/plasma's ksysguard system monitor.
# To use it, launch ksysguard, then File -> Connect Host, and choose
# "Custom command" (see https://techbase.kde.org/Development/Tutorials/Sensors).
#
# Copyright (C) 2017 Juma7C9
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

export LANG=C

parse() {
  case "$1" in
	monitors)
	  printf "energy\tfloat\n"
	  printf "energy-empty\tfloat\n"
	  printf "energy-full\tfloat\n"
	  printf "energy-full-design\tfloat\n"
	  printf "energy-rate\tfloat\n"
	  printf "voltage\tfloat\n"
	  printf "percentage\tinteger\n"
	  printf "capacity\tfloat\n"
	  ;;
	*\?)
	  case "${1%\?}" in
		energy) 	printf "Current charge\t0\t0\tWh\n" ;;
		energy-empty)	printf "Empty charge\t0\t0\tWh\n" ;;
		energy-full)	printf "Full charge\t0\t0\tWh\n" ;;
		energy-full-design)	printf "Design full charge\t0\t0\tWh\n" ;;
		energy-rate)	printf "Current power consumption\t0\t0\tW\n" ;;
		voltage)	printf "Current voltage\t0\t0\tV\n" ;;
		percentage)	printf "Current percentage\t0\t100\t%%\n" ;;
		capacity)	printf "Battery capacity\t0\t100\t%%\n" ;;
		*)	printf "UNKNOWN COMMAND\n" ;;
	  esac
	  ;;
	*)
          print_value "$1"
          ;;
  esac
}

print_value() {
	upower -i $(upower -e | grep -i bat) | grep "$1": | awk -F' ' '{print $2}' | sed -e 's/%//'
}

printf "ksysguardd 1.2.0\n"

while true
do
	printf "ksysguardd> "
	read input
	parse $input
done