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pulseaudio: improve scallback #169; #168
[etc/awesome.git] / widgets / sysload.lua
1
2 --[[
3                                                   
4      Licensed under GNU General Public License v2 
5       * (c) 2013,      Luke Bonham                
6       * (c) 2010-2012, Peter Hofmann              
7                                                   
8 --]]
9
10 local newtimer     = require("lain.helpers").newtimer
11
12 local wibox        = require("wibox")
13
14 local io           = { open = io.open }
15 local string       = { match  = string.match }
16
17 local setmetatable = setmetatable
18
19 -- System load
20 -- lain.widgets.sysload
21 local sysload = {}
22
23 local function worker(args)
24     local args = args or {}
25     local timeout = args.timeout or 2
26     local settings = args.settings or function() end
27
28     sysload.widget = wibox.widget.textbox('')
29
30     function update()
31         local f = io.open("/proc/loadavg")
32         local ret = f:read("*all")
33         f:close()
34
35         load_1, load_5, load_15 = string.match(ret, "([^%s]+) ([^%s]+) ([^%s]+)")
36
37         widget = sysload.widget
38         settings()
39     end
40
41     newtimer("sysload", timeout, update)
42     return sysload.widget
43 end
44
45 return setmetatable(sysload, { __call = function(_, ...) return worker(...) end })