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