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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 markup       = require("lain.util.markup")
12 local helpers      = require("lain.helpers")
13
14 local beautiful    = require("beautiful")
15 local wibox        = require("wibox")
16 local naughty      = require("naughty")
17
18 local io           = io
19 local string       = { match = string.match }
20 local tonumber     = tonumber
21
22 local setmetatable = setmetatable
23
24 -- File system disk space usage
25 -- lain.widgets.fs
26 local fs = {}
27 local notification = nil
28
29 function fs:hide()
30     if notification ~= nil then
31         naughty.destroy(notification)
32         notification = nil
33     end
34 end
35
36 function fs:show(t_out)
37     fs:hide()
38
39     local f = io.popen(helpers.scripts_dir .. "dfs")
40     ws = f:read("*all"):gsub("\n*$", "")
41     f:close()
42
43     notification = naughty.notify({
44         text = ws,
45         timeout = t_out,
46         fg = beautiful.fg_focus,
47     })
48 end
49
50 -- Variable definitions
51 local unit = { ["mb"] = 1024, ["gb"] = 1024^2 }
52
53 local function worker(args)
54     local args = args or {}
55     local partition = args.partition or "/"
56     local refresh_timeout = args.refresh_timeout or 600
57     local header = args.header or " Hdd "
58     local header_color = args.header_color or beautiful.fg_normal or "#FFFFFF"
59     local color = args.color or beautiful.fg_focus or "#FFFFFF"
60     local footer = args.header or ""
61     local shadow = args.shadow or false
62
63     local myfs = wibox.widget.textbox()
64
65     helpers.set_map("fs", false)
66
67     local fsupdate = function()
68         local fs_info = {} -- Get data from df
69         local f = io.popen("LC_ALL=C df -kP")
70
71         local function set_text()
72             local info = fs_info['{' .. partition .. ' used_p}']
73             myfs:set_markup(markup(header_color, header)
74                             .. markup(color, info .. footer) .. " ")
75         end
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                 helpers.uformat(fs_info, m .. " used",  u, unit)
84                 fs_info["{" .. m .. " used_p}"]  = tonumber(p)
85             end
86         end
87
88         f:close()
89
90         if shadow
91         then
92             myfs:set_text('')
93         else
94             set_text()
95         end
96
97         local part = fs_info['{' .. partition .. ' used_p}']
98
99         if part >= 90  then
100             if part >= 99 and not helpers.get_map("fs") then
101                 naughty.notify({ title = "warning",
102                                  text = partition .. " ran out!\n"
103                                         .. "make some room",
104                                  timeout = 8,
105                                  position = "top_right",
106                                  fg = beautiful.fg_urgent,
107                                  bg = beautiful.bg_urgent })
108                 helpers.set_map("fs", true)
109             end
110             if shadow then set_text() end
111         end
112     end
113
114     local fstimer = timer({ timeout = refresh_timeout })
115     fstimer:connect_signal("timeout", fsupdate)
116     fstimer:start()
117     fstimer:emit_signal("timeout")
118
119     myfs:connect_signal('mouse::enter', function () fs:show(0) end)
120     myfs:connect_signal('mouse::leave', function () fs:hide() end)
121
122     local fs_out =
123     {
124         widget = myfs,
125         show = function(t_out)
126                    fsupdate()
127                    fs:show(t_out)
128                end
129     }
130
131     return setmetatable(fs_out, { __index = fs_out.widget })
132 end
133
134 return setmetatable(fs, { __call = function(_, ...) return worker(...) end })