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c3a9e180ed2944e69ca8bcf61d90299392fc1d63
[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           = { popen  = io.popen }
18 local pairs        = pairs
19 local mouse        = mouse
20 local string       = { match  = string.match,
21                        format = string.format }
22 local tonumber     = tonumber
23
24 local setmetatable = setmetatable
25
26 -- File system disk space usage
27 -- lain.widgets.fs
28 local fs = {}
29 local fs_notification  = nil
30
31 function fs:hide()
32     if fs_notification ~= nil then
33         naughty.destroy(fs_notification)
34         fs_notification = nil
35     end
36 end
37
38 function fs:show(t_out)
39     fs:hide()
40
41     local f = io.popen(helpers.scripts_dir .. "dfs")
42     ws = f:read("*all"):gsub("\n*$", "")
43     f:close()
44
45     if fs.followmouse then
46         fs.notification_preset.screen = mouse.screen
47     end
48
49     fs_notification = naughty.notify({
50         preset  = fs.notification_preset,
51         text    = ws,
52         timeout = t_out
53     })
54 end
55
56 -- Unit definitions
57 local unit = { ["mb"] = 1024, ["gb"] = 1024^2 }
58
59 local function worker(args)
60     local args             = args or {}
61     local timeout          = args.timeout or 600
62     local partition        = args.partition or "/"
63     local settings         = args.settings or function() end
64
65     fs.followmouse         = args.followmouse or false
66     fs.notification_preset = args.notification_preset or { fg = beautiful.fg_normal }
67
68     fs.widget = wibox.widget.textbox('')
69
70     helpers.set_map(partition, false)
71
72     function update()
73         fs_info = {}
74         fs_now  = {}
75         local f = assert(io.popen("LC_ALL=C df -kP"))
76
77         for line in f:lines() do -- Match: (size) (used)(avail)(use%) (mount)
78             local s     = string.match(line, "^.-[%s]([%d]+)")
79             local u,a,p = string.match(line, "([%d]+)[%D]+([%d]+)[%D]+([%d]+)%%")
80             local m     = string.match(line, "%%[%s]([%p%w]+)")
81
82             if u and m then -- Handle 1st line and broken regexp
83                 fs_info[m .. " size_mb"]  = string.format("%.1f", tonumber(s) / unit["mb"])
84                 fs_info[m .. " size_gb"]  = string.format("%.1f", tonumber(s) / unit["gb"])
85                 fs_info[m .. " used_p"]   = tonumber(p)
86                 fs_info[m .. " avail_p"]  = 100 - tonumber(p)
87             end
88         end
89
90         f:close()
91
92         fs_now.used      = tonumber(fs_info[partition .. " used_p"])  or 0
93         fs_now.available = tonumber(fs_info[partition .. " avail_p"]) or 0
94         fs_now.size_mb   = tonumber(fs_info[partition .. " size_mb"]) or 0
95         fs_now.size_gb   = tonumber(fs_info[partition .. " size_gb"]) or 0
96
97         widget = fs.widget
98         settings()
99
100         if fs_now.used >= 99 and not helpers.get_map(partition)
101         then
102             naughty.notify({
103                 title = "warning",
104                 text = partition .. " ran out!\nmake some room",
105                 timeout = 8,
106                 fg = "#000000",
107                 bg = "#FFFFFF",
108             })
109             helpers.set_map(partition, true)
110         else
111             helpers.set_map(partition, false)
112         end
113     end
114
115     fs.widget:connect_signal('mouse::enter', function () fs:show(0) end)
116     fs.widget:connect_signal('mouse::leave', function () fs:hide() end)
117
118     helpers.newtimer(partition, timeout, update)
119
120     return setmetatable(fs, { __index = fs.widget })
121 end
122
123 return setmetatable(fs, { __call = function(_, ...) return worker(...) end })