Stuff

#!/bin/awk -f

BEGIN {

  while (system("pgrep awesome")) # make sure awesome-wm has started
  {
    print "waiting for 'awsome-wm' to start";
    system("sleep 2");
  }

  date_cmd = "LANG=de_CH date +\"%X %A, %e %b\"";
  #socket = "/home/calmar/.awesome_ctl.0" # |& permission denied
  osum = 0;
  oidle = 0;
}

{ 
  while (!system("sleep 1")) # still hard to ctrl-c, but well..
  {
    ##################################################
    # date -> date_str

    date_cmd | getline date_str;
    close(date_cmd);

    ##################################################
    # cpu -> full_cpu  xxx: may check once what it actually does...

    ocpustats = 0;
    while ((getline < "/proc/stat") > 0)
    {
      close("/proc/stat"); # xxx: scanning only the first line/cpu for now
      break;
    }
    nsum = 0;
    for (i = 2; i <= NF; i++)  # add together all values
      nsum += $i;

	idlediff = $5 - oidle; # new idle - old idle
	frmtotal = nsum - osum - (idlediff < 0 ? idlediff : 0); # idlediff can be < 0 ?
	frmtotal =  frmtotal < 1 ? 1 : frmtotal;
	full_cpu = 100 - (idlediff > 0 ? idlediff : 0) * 100 / frmtotal;

    osum = nsum;
    oidle = $5;

    ##################################################
    # mem

    count = 0;
    while ((getline < "/proc/meminfo") > 0)
    {
      if ("MemFree:" == $1) # xxx: better use a 'case' maybe
      {
        mem_free = $2;
        count++;
      }
      else if ("MemTotal:" == $1)
      {
        mem_total = $2;
        count++;
      }
      else if ("SwapFree:" == $1)
      {
        swap_free = $2;
        count++;
      }
      else if ("SwapTotal:" == $1)
      {
        swap_total = $2;
        count++;
      }
      if (count >= 4)
      {
        break; # all info is there
      }
    }
    close("/proc/meminfo");

	mem_full = 100 * (mem_total - mem_free) / mem_total;
	swap_full = 100 * (swap_total - swap_free)/ swap_total;
    
    ##################################################
    # ethernet


    ##################################################
    # print the collected infos

    print "0 widget_tell pb_mem " mem_full;
    print "0 widget_tell pb_swap " swap_full;
    print "0 widget_tell pb_cpu " full_cpu;
    print "0 widget_tell tb_date_time " date_str;
  } 
}