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Add a rolling average to the hackspeed script #413

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Add a rolling average to the hackspeed script #413

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1dd6c08
Add a rolling average to the hackspeed script
rowan-vr Feb 14, 2023
5dff95c
Fix array name typo & default format back
rowan-vr Feb 14, 2023
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40 changes: 37 additions & 3 deletions polybar-scripts/info-hackspeed/info-hackspeed.sh
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
#!/bin/sh
#!/bin/bash
# shellcheck disable=SC2016,SC2059

KEYBOARD_ID="AT Translated Set 2 keyboard"
Expand All @@ -8,7 +8,10 @@ KEYBOARD_ID="AT Translated Set 2 keyboard"
METRIC=cpm
FORMAT="# %d $METRIC"

INTERVAL=20
INTERVAL=1

# The amount of INTERVAL which must be 0 to reset the rolling average
RESET_INTERVAL=10

# If you have a keyboard layout that is not listed here yet, create a condition
# yourself. $3 is the key index. Use `xinput test "AT Translated Set 2 keyboard"`
Expand Down Expand Up @@ -43,6 +46,8 @@ printf '' > "$hackspeed_cache"
xinput test "$KEYBOARD_ID" | \
stdbuf -o0 awk '$1 == "key" && $2 == "press" && ('"$CONDITION"') {printf "."}' >> "$hackspeed_cache" &

array=()

while true; do
# Ask the kernel how big the file is with the command `stat`. The number we
# get is the file size in bytes, which equals the amount of dots the file
Expand All @@ -58,7 +63,36 @@ while true; do
# then divide
value=$((lines * multiply_by / divide_by))

printf "$FORMAT\\n" "$value"
if [ "${#array[@]}" -gt "60" ]; then
array=("${array[@]:1}")
fi

reset="1";

for (( i=1; i<=$RESET_INTERVAL; i++ ))
do
if [ "${#array[@]}" -ge "$i" ]; then
if [ "${array[${#array[@]} - $i]}" -ne "0" ]; then
reset="0"
break
fi
fi
done

if [ "$reset" -eq "1" ]; then
array=()
fi

array+=($value)

avg=0
for n in "${array[@]}"
do
avg=$((avg+n))
done
avg=$((avg/${#array[@]}))

printf "$FORMAT\\n" "$avg"

sleep $INTERVAL
done