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dotfiles/bin/battery_indicator.sh
2013-01-18 12:35:18 -06:00

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#!/bin/bash
# modified from http://ficate.com/blog/2012/10/15/battery-life-in-the-land-of-tmux/
HEART='♥ '
if [[ `uname` == 'Linux' ]]; then
current_charge=$(cat /proc/acpi/battery/BAT1/state | grep 'remaining capacity' | awk '{print $3}')
total_charge=$(cat /proc/acpi/battery/BAT1/info | grep 'last full capacity' | awk '{print $4}')
else
battery_info=`ioreg -rc AppleSmartBattery`
current_charge=$(echo $battery_info | grep -o '"CurrentCapacity" = [0-9]\+' | awk '{print $3}')
total_charge=$(echo $battery_info | grep -o '"MaxCapacity" = [0-9]\+' | awk '{print $3}')
fi
charged_slots=$(echo "((($current_charge/$total_charge)*10)/3)+1" | bc -l | cut -d '.' -f 1)
if [[ $charged_slots -gt 3 ]]; then
charged_slots=3
fi
echo -n '#[fg=red]'
for i in `seq 1 $charged_slots`; do echo -n "$HEART"; done
if [[ $charged_slots -lt 3 ]]; then
echo -n '#[fg=white]'
for i in `seq 1 $(echo "3-$charged_slots" | bc)`; do echo -n "$HEART"; done
fi