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Merge pull request #286 from aajjbb/fix-alsa-channel
[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 = helpers.make_widget_textbox()
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.update()
36
37     fs.hide()
38
39     if fs.followtag then
40         fs.notification_preset.screen = focused()
41     elseif scr then
42         fs.notification_preset.screen = scr or 1
43     end
44
45     fs.notification = naughty.notify({
46         preset      = fs.notification_preset,
47         timeout     = seconds or 5
48     })
49 end
50
51 local function worker(args)
52     local args             = args or {}
53     local timeout          = args.timeout or 600
54     local partition        = args.partition or "/"
55     local showpopup        = args.showpopup or "on"
56     local notify           = args.notify or "on"
57     local settings         = args.settings or function() end
58
59     fs.options             = args.options
60     fs.followtag           = args.followtag or false
61     fs.notification_preset = args.notification_preset
62
63     if not fs.notification_preset then
64         fs.notification_preset      = naughty.config.defaults
65         fs.notification_preset.font = "Monospace 10"
66         fs.notification_preset.fg   = "#FFFFFF"
67         fs.notification_preset.bg   = "#000000"
68     end
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 setmetatable(fs, { __index = fs.widget })
128 end
129
130 return setmetatable(fs, { __call = function(_, ...) return worker(...) end })