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readme updated
[etc/awesome.git] / widgets / fs.lua
1
2 --[[
3                                                       
4      Licensed under GNU General Public License v2     
5       * (c) 2013, Luke Bonham                         
6       * (c) 2010, Adrian C.      <anrxc@sysphere.org> 
7       * (c) 2009, Lucas de Vries <lucas@glacicle.com> 
8                                                       
9 --]]
10
11 local helpers      = require("lain.helpers")
12
13 local beautiful    = require("beautiful")
14 local wibox        = require("wibox")
15 local naughty      = require("naughty")
16
17 local io           = io
18 local pairs        = pairs
19 local string       = { match  = string.match,
20                        format = string.format }
21 local tonumber     = tonumber
22
23 local setmetatable = setmetatable
24
25 -- File system disk space usage
26 -- lain.widgets.fs
27 local fs = {}
28
29 local notification  = nil
30 fs_notification_preset = { fg = beautiful.fg_normal }
31
32 function fs:hide()
33     if notification ~= nil then
34         naughty.destroy(notification)
35         notification = nil
36     end
37 end
38
39 function fs:show(t_out)
40     fs:hide()
41
42     local f = io.popen(helpers.scripts_dir .. "dfs")
43     ws = f:read("*all"):gsub("\n*$", "")
44     f:close()
45
46     notification = naughty.notify({
47         preset = fs_notification_preset,
48         text = ws,
49         timeout = t_out
50     })
51 end
52
53 -- Units definitions
54 local unit = { ["mb"] = 1024, ["gb"] = 1024^2 }
55
56 local function worker(args)
57     local args      = args or {}
58     local timeout   = args.timeout or 600
59     local partition = args.partition or "/"
60     local settings  = args.settings or function() end
61
62     fs.widget = wibox.widget.textbox('')
63
64     helpers.set_map("fs", false)
65
66     function update()
67         fs_info = {}
68
69         local f = io.popen("LC_ALL=C df -kP")
70
71         for line in f:lines() do -- Match: (size) (used)(avail)(use%) (mount)
72             local s     = string.match(line, "^.-[%s]([%d]+)")
73             local u,a,p = string.match(line, "([%d]+)[%D]+([%d]+)[%D]+([%d]+)%%")
74             local m     = string.match(line, "%%[%s]([%p%w]+)")
75
76             if u and m then -- Handle 1st line and broken regexp
77                 fs_info[m .. " size_mb"]  = string.format("%.1f", tonumber(s) / unit["mb"])
78                 fs_info[m .. " size_gb"]  = string.format("%.1f", tonumber(s) / unit["gb"])
79                 fs_info[m .. " used_p"]   = tonumber(p)
80                 fs_info[m .. " avail_p"]  = 100 - tonumber(p)
81             end
82         end
83
84         f:close()
85
86         -- chosen partition easy stuff
87         -- you can however check whatever partition else
88         used      = tonumber(fs_info[partition .. " used_p"])
89         available = tonumber(fs_info[partition .. " avail_p"])
90         size_mb   = tonumber(fs_info[partition .. " size_mb"])
91         size_gb   = tonumber(fs_info[partition .. " size_gb"])
92
93         widget = fs.widget
94         settings()
95
96         if used >= 99 and not helpers.get_map("fs")
97         then
98             naughty.notify({
99                 title = "warning",
100                 text = partition .. " ran out!\nmake some room",
101                 timeout = 8,
102                 fg = "#000000",
103                 bg = "#FFFFFF"
104             })
105             helpers.set_map("fs", true)
106         else
107             helpers.set_map("fs", false)
108         end
109     end
110
111     helpers.newtimer(partition, timeout, update)
112
113     widget:connect_signal('mouse::enter', function () fs:show(0) end)
114     widget:connect_signal('mouse::leave', function () fs:hide() end)
115
116     return setmetatable(fs, { __index = fs.widget })
117 end
118
119 return setmetatable(fs, { __call = function(_, ...) return worker(...) end })