SMAPI battery functionality shortcuts

bat.sh

#!/usr/bin/bash
#
# bat - battery utilities
#

BAT="BAT0"
SYSBAT="/sys/class/power_supply/${BAT}/"
SMAPIBAT="/sys/devices/platform/smapi/${BAT}/"

function __bat__cap(){
	[[ "$1" == "h" ]] && { echo -e "cap\tget remaining battery capacity (in function of design capacity)"; return; }
	# Remaining capacity
	CAP=$(cat "${SYSBAT}energy_full")
	# Design capacity
	CAPD=$(cat "${SYSBAT}energy_full_design")

	printf "%.2f %% remaining (%.2f Wh of %.2f Wh)\n" \
		$(echo "scale=4;${CAP}/${CAPD}*100" | bc) \
		$(echo "scale=2;${CAP}/1000000" | bc) \
		$(echo "scale=2;${CAPD}/1000000" | bc)
}

function __bat__thresh(){
	[[ "$1" == "h" ]] && {
		echo -e "thresh\tget battery charging threshold"
		echo -e "thresh START STOP\tset battery charging thresholds"
		return
	}
	if [[ ! $@ ]]; then 
		printf "%d -> %d\n" \
			$(cat "${SMAPIBAT}start_charge_thresh") \
			$(cat "${SMAPIBAT}stop_charge_thresh")
	else
		printf "New thresholds: %d -> %d. Continue? " $(($1)) $(($2))
		read -n 1 CONT
		[[ "${CONT}" != "y" ]] && { echo "Aborting."; exit 1; }
		echo  
		sudo bash -c "echo $(($1)) > ${SMAPIBAT}start_charge_thresh"
		sudo bash -c "echo $(($2)) > ${SMAPIBAT}stop_charge_thresh"
		echo "New values: $(__bat__thresh)"
	fi
}

function __bat__cycles(){
	[[ "$1" == "h" ]] && { echo -e "cycles\tget battery charging cycles"; return; }
	cat "${SMAPIBAT}cycle_count"
}

function __bat__stat(){
	[[ "$1" == "h" ]] && { echo -e "stat\tget battery status"; return; }
	cat "${SYSBAT}/status"
}

function __bat__power(){
	[[ "$1" == "h" ]] && { echo -e "power\tget actual battery output"; return; }
	echo $(echo "scale=2;$(cat ${SYSBAT}/power_now)/1000/1000" | bc) W
}

##
### INSERT NEW FUNCTIONALITY HERE
##

[[ ! $@ ]] && {
	for FUNC in $(compgen -A function __bat__); do
		"${FUNC}" h
	done
	exit 1
}

__bat__$@