plugins/dstat_load.lua

   1 --
   2 -- Copyright (c) 2007, Bart Trojanowski <bart@jukie.net>
   3 --
   4 -- Simple load applet for wmii bar.
   5 --
   6 -- NOTE: dstat is required.
   7 --
   8 local wmii = require("wmii")
   9 local os = require("os")
  10 local math = require("math")
  11 local string = require("string")
  12 local type = type
  13 local tonumber = tonumber
  14 local tostring = tostring
  15
  16 module("dstat_load")
  17 api_version=0.1
  18
  19 local palette = { "#888888",
  20                   "#999988",
  21                   "#AAAA88",
  22                   "#BBBB88",
  23
  24                   "#CCCC88",
  25                   "#CCBB88",
  26                   "#CCAA88",
  27
  28                   "#DD9988",
  29                   "#EE8888",
  30                   "#FF4444",
  31           }
  32
  33 local widget = wmii.widget:new ("800_dstat_load")
  34 wmii.add_exec ("TERM=vt100 dstat --load --nocolor --noheaders --noupdate 1",
  35                 function (line)
  36                         if type(line) ~= "string" then
  37                                 return
  38                         end
  39
  40                         local line = line:gsub ("%W%W+", " ")
  41                         if line:len() < 5 then
  42                                 return
  43                         end
  44
  45                         local tmp = line:match("([%d.]+)%D")
  46                         local current = tonumber(tmp)
  47
  48                         local colors = nil
  49                         if type(current) == "number" then
  50                                 local index = math.min (math.floor(current * (#palette-1)) + 1, #palette)
  51                                 local normal = wmii.get_ctl("normcolors")
  52                                 colors = string.gsub(normal, "^%S+", palette[index], 1)
  53                         end
  54
  55                         widget:show (line, colors)
  56                 end)