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b48fcd02506baf6aa6339bffa86aa0f3da279ad3
[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 beautiful    = require("beautiful")
13 local focused      = require("awful.screen").focused
14 local wibox        = require("wibox")
15 local naughty      = require("naughty")
16
17 local string       = string
18 local tonumber     = tonumber
19
20 local setmetatable = setmetatable
21
22 -- File system disk space usage
23 -- lain.widgets.fs
24 local fs = {}
25
26 -- Unit definitions
27 fs.unit = { ["mb"] = 1024, ["gb"] = 1024^2 }
28
29 function fs.hide()
30     if not fs.notification then return end
31     naughty.destroy(fs.notification)
32     fs.notification = nil
33 end
34
35 function fs.show(seconds, scr)
36     fs.hide()
37
38     if fs.followtag then
39         fs.notification_preset.screen = focused()
40     elseif scr then
41         fs.notification_preset.screen = scr
42     end
43
44     local cmd = (fs.options and string.format("dfs %s", fs.options)) or "dfs"
45
46     helpers.async(helpers.scripts_dir .. cmd, function(ws)
47         fs.notification = naughty.notify({
48             preset      = fs.notification_preset,
49             text        = ws:gsub("\n*$", ""),
50             timeout     = seconds or 5,
51         })
52     end)
53 end
54
55 local function worker(args)
56     local args             = args or {}
57     local timeout          = args.timeout or 600
58     local partition        = args.partition or "/"
59     local showpopup        = args.showpopup or "on"
60     local notify           = args.notify or "on"
61     local settings         = args.settings or function() end
62
63     fs.options             = args.options
64     fs.followtag           = args.followtag or false
65     fs.notification_preset = args.notification_preset or { fg = beautiful.fg_normal }
66
67     fs.widget = wibox.widget.textbox()
68
69     helpers.set_map(partition, false)
70
71
72     function update()
73         fs_info, fs_now  = {}, {}
74         helpers.async(string.format("%s -c 'LC_ALL=C df -k --output=target,size,used,avail,pcent'", shell), 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                     title   = "warning",
105                     text    = partition .. " is empty!",
106                     timeout = 8,
107                     fg      = "#000000",
108                     bg      = "#FFFFFF"
109                 })
110                 helpers.set_map(partition, true)
111             else
112                 helpers.set_map(partition, false)
113             end
114         end)
115     end
116
117     if showpopup == "on" then
118        fs.widget:connect_signal('mouse::enter', function () fs.show(0) end)
119        fs.widget:connect_signal('mouse::leave', function () fs.hide() end)
120     end
121
122     helpers.newtimer(partition, timeout, update)
123
124     return setmetatable(fs, { __index = fs.widget })
125 end
126
127 return setmetatable(fs, { __call = function(_, ...) return worker(...) end })