redid volume & some refactoring

sway/chvol.sh

@@ -0,0 +1,34 @@
+max=100
+
+if [ $1 = 'source' ]; then
+  object="@DEFAULT_AUDIO_SOURCE@"
+elif [ $1 = 'sink' ]; then
+  object="@DEFAULT_AUDIO_SINK@"
+else
+  exit 1
+fi;
+
+if [ $2 = 'mute' ]; then
+  wpctl set-mute $object toggle
+  exit 0
+fi;
+
+val=$(wpctl get-volume $object | awk '{print $2}') 
+val=$(( (100*${val%%.*}) + ${val#*.} ))
+val=$(( $val + $2 ))
+
+if [ $val -gt $max ]; then
+  val=$max
+elif [ $val -lt 0 ]; then
+  val=0
+fi;
+
+
+
+dec=$(( val / 100 ))
+frac=$(( val % 100 ))
+if [ $frac -lt 10 ]; then
+  frac="0$frac"
+fi
+
+wpctl set-volume $object "$dec.$frac"