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c78b6cbbf18028d458660cb3c7588258d594acff
[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 = { unit  = { ["mb"] = 1024, ["gb"] = 1024^2 } }
24
25 function fs.hide()
26     if not fs.notification then return end
27     naughty.destroy(fs.notification)
28     fs.notification = nil
29 end
30
31 function fs.show(seconds, scr)
32     fs.update()
33
34     fs.hide()
35
36     if fs.followtag then
37         fs.notification_preset.screen = focused()
38     elseif scr then
39         fs.notification_preset.screen = scr or 1
40     end
41
42     fs.notification = naughty.notify({
43         preset      = fs.notification_preset,
44         timeout     = seconds or 5
45     })
46 end
47
48 local function worker(args)
49     local args             = args or {}
50     local timeout          = args.timeout or 600
51     local partition        = args.partition or "/"
52     local showpopup        = args.showpopup or "on"
53     local notify           = args.notify or "on"
54     local settings         = args.settings or function() end
55
56     fs.options             = args.options
57     fs.followtag           = args.followtag or false
58     fs.notification_preset = args.notification_preset
59
60     if not fs.notification_preset then
61         fs.notification_preset = {
62             font = "Monospace 10",
63             fg   = "#FFFFFF",
64             bg   = "#000000"
65         }
66     end
67
68     fs.widget = wibox.widget.textbox()
69
70     helpers.set_map(partition, false)
71
72     function fs.update()
73         fs_info, fs_now  = {}, {}
74         helpers.async({ shell, "-c", "LC_ALL=C df -k --output=target,size,used,avail,pcent" }, function(f)
75             for line in string.gmatch(f, "\n[^\n]+") do
76                 local m,s,u,a,p = string.match(line, "(/.-%s).-(%d+).-(%d+).-(%d+).-([%d]+)%%")
77                 m = m:gsub(" ", "") -- clean target from any whitespace
78
79                 fs_info[m .. " size_mb"]  = string.format("%.1f", tonumber(s) / fs.unit["mb"])
80                 fs_info[m .. " size_gb"]  = string.format("%.1f", tonumber(s) / fs.unit["gb"])
81                 fs_info[m .. " used_mb"]  = string.format("%.1f", tonumber(u) / fs.unit["mb"])
82                 fs_info[m .. " used_gb"]  = string.format("%.1f", tonumber(u) / fs.unit["gb"])
83                 fs_info[m .. " used_p"]   = p
84                 fs_info[m .. " avail_mb"] = string.format("%.1f", tonumber(a) / fs.unit["mb"])
85                 fs_info[m .. " avail_gb"] = string.format("%.1f", tonumber(a) / fs.unit["gb"])
86                 fs_info[m .. " avail_p"]  = string.format("%d", 100 - tonumber(p))
87             end
88
89             fs_now.size_mb      = fs_info[partition .. " size_mb"]  or "N/A"
90             fs_now.size_gb      = fs_info[partition .. " size_gb"]  or "N/A"
91             fs_now.used         = fs_info[partition .. " used_p"]   or "N/A"
92             fs_now.used_mb      = fs_info[partition .. " used_mb"]  or "N/A"
93             fs_now.used_gb      = fs_info[partition .. " used_gb"]  or "N/A"
94             fs_now.available    = fs_info[partition .. " avail_p"]  or "N/A"
95             fs_now.available_mb = fs_info[partition .. " avail_mb"] or "N/A"
96             fs_now.available_gb = fs_info[partition .. " avail_gb"] or "N/A"
97
98             notification_preset = fs.notification_preset
99             widget = fs.widget
100             settings()
101
102             if notify == "on" and tonumber(fs_now.used) >= 99 and not helpers.get_map(partition) then
103                 naughty.notify({
104                     preset = naughty.config.presets.critical,
105                     title  = "Warning",
106                     text   = partition .. " is empty",
107                 })
108                 helpers.set_map(partition, true)
109             else
110                 helpers.set_map(partition, false)
111             end
112         end)
113
114         local notifycmd = (fs.options and string.format("dfs %s", fs.options)) or "dfs"
115         helpers.async(helpers.scripts_dir .. notifycmd, function(ws)
116             fs.notification_preset.text = ws:gsub("\n*$", "")
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, fs.update)
126
127     return fs
128 end
129
130 return setmetatable(fs, { __call = function(_, ...) return worker(...) end })