wm agnostic workspace indicator

workspaces.sh

#!/usr/bin/env bash

declare activeWorkspace="*%s"
declare inactiveWorkspace=" %s"
declare separator=" │ "

xprop -spy -root |
  awk -v inactiveWorkspace="$inactiveWorkspace" \
      -v activeWorkspace="$activeWorkspace" \
      -v separator="$separator" -F' = ' '
    function printWorkspace(current, names) {
      ++current;
      gsub("\"", "", names);
      n = split(names, a, ", ");
      printf "\n";
      for(i = 0; ++i <= n;) {
        if(current == i) {
          printf activeWorkspace, a[i];
        } else {
          printf inactiveWorkspace, a[i];
        }
        if(i != n) printf separator;
      }
      system("");
    }

    BEGIN { active=0; workspaces=""; }
    "_NET_CURRENT_DESKTOP(CARDINAL)" == $1 { if($2 != active) { active=$2; printWorkspace(active, workspaces); } }
    "_NET_DESKTOP_NAMES(UTF8_STRING)" == $1 { if($2 != workspaces) { workspaces=$2; printWorkspace(active, workspaces); } }
  '