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#!/bin/sh
# Module showing CPU load as a changing bars.
# Just like in polybar.
# Each bar represents amount of load on one core since
# last run.
# Cache in tmpfs to improve speed and reduce SSD load
cache=/tmp/cpubarscache
case $BLOCK_BUTTON in
2) setsid -f "$TERMINAL" -e htop ;;
3) notify-send "🪨 CPU load module" "Each bar represents one CPU core" ;;
6) setsid -f "$TERMINAL" -e "$EDITOR" "$0" ;;
esac
# id total idle
stats=$(awk '/cpu[0-9]+/ {printf "%d %d %d\n", substr($1,4), ($2 + $3 + $4 + $5), $5 }' /proc/stat)
[ ! -f $cache ] && echo "$stats" >"$cache"
old=$(cat "$cache")
printf "🪨"
echo "$stats" | while read -r row; do
id=${row%% *}
rest=${row#* }
total=${rest%% *}
idle=${rest##* }
case "$(echo "$old" | awk '{if ($1 == id)
printf "%d\n", (1 - (idle - $3) / (total - $2))*100 /12.5}' \
id="$id" total="$total" idle="$idle")" in
"0") printf "▁" ;;
"1") printf "▂" ;;
"2") printf "▃" ;;
"3") printf "▄" ;;
"4") printf "▅" ;;
"5") printf "▆" ;;
"6") printf "▇" ;;
"7") printf "█" ;;
"8") printf "█" ;;
esac
done
printf "\\n"
echo "$stats" >"$cache"
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