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mem: adjusted calculation; #271
[etc/awesome.git] / widgets / fs.lua
1
2 --[[
3                                                   
4      Licensed under GNU General Public License v2 
5       * (c) 2013, Luke Bonham                     
6                                                   
7 --]]
8
9 local helpers      = require("lain.helpers")
10
11 local shell        = require("awful.util").shell
12 local focused      = require("awful.screen").focused
13 local wibox        = require("wibox")
14 local naughty      = require("naughty")
15
16 local string       = string
17 local tonumber     = tonumber
18
19 local setmetatable = setmetatable
20
21 -- File system disk space usage
22 -- lain.widgets.fs
23 local fs = {}
24
25 -- Unit definitions
26 fs.unit = { ["mb"] = 1024, ["gb"] = 1024^2 }
27
28 function fs.hide()
29     if not fs.notification then return end
30     naughty.destroy(fs.notification)
31     fs.notification = nil
32 end
33
34 function fs.show(seconds, scr)
35     fs.hide()
36
37     if fs.followtag then
38         fs.notification_preset.screen = focused()
39     elseif scr then
40         fs.notification_preset.screen = scr or 1
41     end
42
43     local cmd = (fs.options and string.format("dfs %s", fs.options)) or "dfs"
44
45     helpers.async(helpers.scripts_dir .. cmd, function(ws)
46         fs.notification = naughty.notify({
47             preset      = fs.notification_preset,
48             text        = ws:gsub("\n*$", ""),
49             timeout     = seconds or 5,
50         })
51     end)
52 end
53
54 local function worker(args)
55     local args             = args or {}
56     local timeout          = args.timeout or 600
57     local partition        = args.partition or "/"
58     local showpopup        = args.showpopup or "on"
59     local notify           = args.notify or "on"
60     local settings         = args.settings or function() end
61
62     fs.options             = args.options
63     fs.followtag           = args.followtag or false
64     fs.notification_preset = args.notification_preset
65
66     if not fs.notification_preset then
67         fs.notification_preset      = naughty.config.defaults
68         fs.notification_preset.font = "Monospace 10"
69         fs.notification_preset.fg   = "#FFFFFF"
70         fs.notification_preset.bg   = "#000000"
71     end
72
73     fs.widget = wibox.widget.textbox()
74
75     helpers.set_map(partition, false)
76
77     function update()
78         fs_info, fs_now  = {}, {}
79         helpers.async({ shell, "-c", "LC_ALL=C df -k --output=target,size,used,avail,pcent" }, function(f)
80             for line in string.gmatch(f, "\n[^\n]+") do
81                 local m,s,u,a,p = string.match(line, "(/.-%s).-(%d+).-(%d+).-(%d+).-([%d]+)%%")
82                 m = m:gsub(" ", "") -- clean target from any whitespace
83
84                 fs_info[m .. " size_mb"]  = string.format("%.1f", tonumber(s) / fs.unit["mb"])
85                 fs_info[m .. " size_gb"]  = string.format("%.1f", tonumber(s) / fs.unit["gb"])
86                 fs_info[m .. " used_mb"]  = string.format("%.1f", tonumber(u) / fs.unit["mb"])
87                 fs_info[m .. " used_gb"]  = string.format("%.1f", tonumber(u) / fs.unit["gb"])
88                 fs_info[m .. " used_p"]   = p
89                 fs_info[m .. " avail_mb"] = string.format("%.1f", tonumber(a) / fs.unit["mb"])
90                 fs_info[m .. " avail_gb"] = string.format("%.1f", tonumber(a) / fs.unit["gb"])
91                 fs_info[m .. " avail_p"]  = string.format("%d", 100 - tonumber(p))
92             end
93
94             fs_now.size_mb      = fs_info[partition .. " size_mb"]  or "N/A"
95             fs_now.size_gb      = fs_info[partition .. " size_gb"]  or "N/A"
96             fs_now.used         = fs_info[partition .. " used_p"]   or "N/A"
97             fs_now.used_mb      = fs_info[partition .. " used_mb"]  or "N/A"
98             fs_now.used_gb      = fs_info[partition .. " used_gb"]  or "N/A"
99             fs_now.available    = fs_info[partition .. " avail_p"]  or "N/A"
100             fs_now.available_mb = fs_info[partition .. " avail_mb"] or "N/A"
101             fs_now.available_gb = fs_info[partition .. " avail_gb"] or "N/A"
102
103             notification_preset = fs.notification_preset
104             widget = fs.widget
105             settings()
106
107             if notify == "on" and tonumber(fs_now.used) >= 99 and not helpers.get_map(partition) then
108                 naughty.notify({
109                     preset = naughty.config.presets.critical,
110                     title  = "Warning",
111                     text   = partition .. " is empty",
112                 })
113                 helpers.set_map(partition, true)
114             else
115                 helpers.set_map(partition, false)
116             end
117         end)
118     end
119
120     if showpopup == "on" then
121        fs.widget:connect_signal('mouse::enter', function () fs.show(0) end)
122        fs.widget:connect_signal('mouse::leave', function () fs.hide() end)
123     end
124
125     helpers.newtimer(partition, timeout, update)
126
127     return setmetatable(fs, { __index = fs.widget })
128 end
129
130 return setmetatable(fs, { __call = function(_, ...) return worker(...) end })