tmux-kanagawa/scripts/battery.sh

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#!/usr/bin/env bash
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linux_acpi() {
arg=$1
BAT=$(ls -d /sys/class/power_supply/BAT* | head -1)
if [ ! -x "$(which acpi 2> /dev/null)" ];then
case "$arg" in
status)
cat $BAT/status
;;
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percent)
cat $BAT/capacity
;;
*)
;;
esac
else
case "$arg" in
status)
acpi | cut -d: -f2- | cut -d, -f1 | tr -d ' '
;;
percent)
acpi | cut -d: -f2- | cut -d, -f2 | tr -d '% '
;;
*)
;;
esac
fi
}
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battery_percent()
{
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# Check OS
case $(uname -s) in
Linux)
percent=$(linux_acpi percent)
[ -n "$percent" ] && echo " $percent"
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;;
Darwin)
echo $(pmset -g batt | grep -Eo '[0-9]?[0-9]?[0-9]%')
;;
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FreeBSD)
echo $(apm | sed '8,11d' | grep life | awk '{print $4}')
;;
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CYGWIN*|MINGW32*|MSYS*|MINGW*)
# leaving empty - TODO - windows compatability
;;
*)
;;
esac
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}
battery_status()
{
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# Check OS
case $(uname -s) in
Linux)
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status=$(linux_acpi status)
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;;
Darwin)
status=$(pmset -g batt | sed -n 2p | cut -d ';' -f 2)
;;
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FreeBSD)
status=$(apm | sed '8,11d' | grep Status | awk '{printf $3}')
;;
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CYGWIN*|MINGW32*|MSYS*|MINGW*)
# leaving empty - TODO - windows compatability
;;
*)
;;
esac
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case $status in
discharging|Discharging)
echo ''
;;
high)
echo ''
;;
charging)
echo 'AC'
;;
*)
echo 'AC'
;;
esac
### Old if statements didn't work on BSD, they're probably not POSIX compliant, not sure
# if [ $status = 'discharging' ] || [ $status = 'Discharging' ]; then
# echo ''
# # elif [ $status = 'charging' ]; then # This is needed for FreeBSD AC checking support
# # echo 'AC'
# else
# echo 'AC'
# fi
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}
main()
{
bat_stat=$(battery_status)
bat_perc=$(battery_percent)
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if [ -z "$bat_stat" ]; then # Test if status is empty or not
echo "$bat_perc"
elif [ -z "$bat_perc" ]; then # In case it is a desktop with no battery percent, only AC power
echo "$bat_stat"
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else
echo "$bat_stat $bat_perc"
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fi
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}
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#run main driver program
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main