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Merge pull request #420 from sim590/unpack-lua51-compat
[etc/awesome.git] / widget / fs.lua
1 --[[
2
3      Licensed under GNU General Public License v2
4       * (c) 2018, Uli Schlacter
5       * (c) 2018, Otto Modinos
6       * (c) 2013, Luca CPZ
7
8 --]]
9
10 local helpers    = require("lain.helpers")
11 local Gio        = require("lgi").Gio
12 local focused    = require("awful.screen").focused
13 local wibox      = require("wibox")
14 local naughty    = require("naughty")
15 local math       = math
16 local string     = string
17 local tconcat    = table.concat
18 local tonumber   = tonumber
19 local query_size = Gio.FILE_ATTRIBUTE_FILESYSTEM_SIZE
20 local query_free = Gio.FILE_ATTRIBUTE_FILESYSTEM_FREE
21 local query_used = Gio.FILE_ATTRIBUTE_FILESYSTEM_USED
22 local query      = query_size .. "," .. query_free .. "," .. query_used
23
24 -- File systems info
25 -- lain.widget.fs
26
27 local function factory(args)
28     local fs = {
29         widget = wibox.widget.textbox(),
30         units = {
31             [1] = "Kb", [2] = "Mb", [3] = "Gb",
32             [4] = "Tb", [5] = "Pb", [6] = "Eb",
33             [7] = "Zb", [8] = "Yb"
34         }
35     }
36
37     function fs.hide()
38         if not fs.notification then return end
39         naughty.destroy(fs.notification)
40         fs.notification = nil
41     end
42
43     function fs.show(seconds, scr)
44         fs.hide(); fs.update()
45         fs.notification_preset.screen = fs.followtag and focused() or scr or 1
46         fs.notification = naughty.notify {
47             preset  = fs.notification_preset,
48             timeout = seconds or 5
49         }
50     end
51
52     local args      = args or {}
53     local timeout   = args.timeout or 600
54     local partition = args.partition
55     local threshold = args.threshold or 99
56     local showpopup = args.showpopup or "on"
57     local settings  = args.settings or function() end
58
59     fs.followtag           = args.followtag or false
60     fs.notification_preset = args.notification_preset
61
62     if not fs.notification_preset then
63         fs.notification_preset = {
64             font = "Monospace 10",
65             fg   = "#FFFFFF",
66             bg   = "#000000"
67         }
68     end
69
70     function fs.update()
71         local notifytable = { [1] = string.format("%-10s %-5s %s\t%s\t\n", "path", "used", "free", "size") }
72         local pathlen = 10
73         fs_now = {}
74
75         for _, mount in ipairs(Gio.unix_mounts_get()) do
76             local path = Gio.unix_mount_get_mount_path(mount)
77             local root = Gio.File.new_for_path(path)
78             local info = root:query_filesystem_info(query)
79
80             if info then
81                 local size = info:get_attribute_uint64(query_size)
82                 local used = info:get_attribute_uint64(query_used)
83                 local free = info:get_attribute_uint64(query_free)
84
85                 if size > 0 then
86                     local units = math.floor(math.log(size)/math.log(1024))
87
88                     fs_now[path] = {
89                         units      = fs.units[units],
90                         percentage = math.floor(100 * used / size), -- used percentage
91                         size       = size / math.pow(1024, math.floor(units)),
92                         used       = used / math.pow(1024, math.floor(units)),
93                         free       = free / math.pow(1024, math.floor(units))
94                     }
95
96                     if fs_now[path].percentage > 0 then -- don't notify unused file systems
97                         notifytable[#notifytable+1] = string.format("\n%-10s %-5s %.2f\t%.2f\t%s", path,
98                         fs_now[path].percentage .. "%", fs_now[path].free, fs_now[path].size,
99                         fs_now[path].units)
100
101                         pathlen = math.max(pathlen, #path)
102                     end
103                 end
104             end
105         end
106
107         widget = fs.widget
108         settings()
109
110         if partition and fs_now[partition] and fs_now[partition].percentage >= threshold then
111             if not helpers.get_map(partition) then
112                 naughty.notify {
113                     preset = naughty.config.presets.critical,
114                     title  = "Warning",
115                     text   = string.format("%s is above %d%% (%d%%)", partition, threshold, fs_now[partition].percentage)
116                 }
117                 helpers.set_map(partition, true)
118             else
119                 helpers.set_map(partition, false)
120             end
121         end
122
123         if pathlen > 10 then -- formatting aesthetics
124             for i = 1, #notifytable do
125                 local pathspaces = notifytable[i]:match("/%w*[/%w*]*%s*") or notifytable[i]:match("path%s*")
126                 notifytable[i] = notifytable[i]:gsub(pathspaces, pathspaces .. string.rep(" ", pathlen - 10) .. "\t")
127             end
128         end
129
130         fs.notification_preset.text = tconcat(notifytable)
131     end
132
133     if showpopup == "on" then
134        fs.widget:connect_signal('mouse::enter', function () fs.show(0) end)
135        fs.widget:connect_signal('mouse::leave', function () fs.hide() end)
136     end
137
138     helpers.newtimer(partition or "fs", timeout, fs.update)
139
140     return fs
141 end
142
143 return factory