clean up scripts

.config/polybar/scripts/info-hackspeed.sh

@@ -0,0 +1,64 @@
+#!/bin/sh
+# shellcheck disable=SC2016,SC2059
+
+KEYBOARD_ID="AT Translated Set 2 keyboard"
+
+# cpm: characters per minute
+# wpm: words per minute (1 word = 5 characters)
+METRIC=cpm
+FORMAT="# %d $METRIC"
+
+INTERVAL=20
+
+# If you have a keyboard layout that is not listed here yet, create a condition
+# yourself. $3 is the key index. Use `xinput test "AT Translated Set 2 keyboard"`
+# to see key codes in real time.  Be sure to open a pull request for your
+# layout's condition!
+LAYOUT=qwerty
+
+case "$LAYOUT" in
+	qwerty) CONDITION='($3 >= 10 && $3 <= 19) || ($3 >= 24 && $3 <= 33) || ($3 >= 37 && $3 <= 53) || ($3 >= 52 && $3 <= 58)'; ;;
+	azerty) CONDITION='($3 >= 10 && $3 <= 19) || ($3 >= 24 && $3 <= 33) || ($3 >= 37 && $3 <= 54) || ($3 >= 52 && $3 <= 57)'; ;;
+	qwertz) CONDITION='($3 >= 10 && $3 <= 20) || ($3 >= 24 && $3 <= 34) || ($3 == 36) || ($3 >= 38 && $3 <= 48) || ($3 >= 52 && $3 <= 58)'; ;;
+    dvorak) CONDITION='($3 >= 10 && $3 <= 19) || ($3 >= 27 && $3 <= 33) || ($3 >= 38 && $3 <= 47) || ($3 >= 53 && $3 <= 61)'; ;;
+    dontcare) CONDITION='1'; ;; # Just register all key presses, not only letters and numbers
+	*) echo "Unsupported layout \"$LAYOUT\""; exit 1; ;;
+esac
+
+# We have to account for the fact we're not listening a whole minute
+multiply_by=60
+divide_by=$INTERVAL
+
+case "$METRIC" in
+	wpm) divide_by=$((divide_by * 5)); ;;
+	cpm) ;;
+	*) echo "Unsupported metric \"$METRIC\""; exit 1; ;;
+esac
+
+hackspeed_cache="$(mktemp -p '' hackspeed_cache.XXXXX)"
+trap 'rm "$hackspeed_cache"' EXIT
+
+# Write a dot to our cache for each key press
+printf '' > "$hackspeed_cache"
+xinput test "$KEYBOARD_ID" | \
+	stdbuf -o0 awk '$1 == "key" && $2 == "press" && ('"$CONDITION"') {printf "."}' >> "$hackspeed_cache" &
+
+while true; do
+	# Ask the kernel how big the file is with the command `stat`. The number we
+	# get is the file size in bytes, which equals the amount of dots the file
+	# contains, and hence how much keys were pressed since the file was last
+	# cleared.
+	lines=$(stat --format %s "$hackspeed_cache")
+
+	# Truncate the cache file so that in the next iteration, we count only new
+	# keypresses
+	printf '' > "$hackspeed_cache"
+
+	# The shell only does integer operations, so make sure to first multiply and
+	# then divide
+	value=$((lines * multiply_by / divide_by))
+
+	printf "$FORMAT\\n" "$value"
+
+	sleep $INTERVAL
+done