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readme updated
[etc/awesome.git] / widgets / maildir.lua
1
2 --[[
3                                                   
4      Licensed under GNU General Public License v2 
5       * (c) 2013,      Luke Bonham                
6       * (c) 2010-2012, Peter Hofmann              
7                                                   
8 --]]
9
10 local newtimer        = require("lain.helpers").newtimer
11
12 local wibox           = require("wibox")
13
14 local io              = io
15 local os              = { getenv = os.getenv }
16 local pairs           = pairs
17 local string          = { len    = string.len,
18                           match  = string.match }
19 local table           = { sort   = table.sort }
20
21 local setmetatable    = setmetatable
22
23 -- Maildir check
24 -- lain.widgets.maildir
25 local maildir = {}
26
27 local function worker(args)
28     local args         = args or {}
29     local timeout      = args.timeout or 60
30     local mailpath     = args.mailpath or os.getenv("HOME") .. "/Mail"
31     local ignore_boxes = args.ignore_boxes or {}
32     local settings     = args.settings or function() end
33
34     maildir.widget = wibox.widget.textbox('')
35
36     function update()
37         -- Find pathes to mailboxes.
38         local p = io.popen("find " .. mailpath ..
39                            " -mindepth 1 -maxdepth 1 -type d" ..
40                            " -not -name .git")
41         local boxes = {}
42         repeat
43             line = p:read("*l")
44             if line ~= nil
45             then
46                 -- Find all files in the "new" subdirectory. For each
47                 -- file, print a single character (no newline). Don't
48                 -- match files that begin with a dot.
49                 -- Afterwards the length of this string is the number of
50                 -- new mails in that box.
51                 local np = io.popen("find " .. line ..
52                                     "/new -mindepth 1 -type f " ..
53                                     "-not -name '.*' -printf a")
54                 local mailstring = np:read("*all")
55
56                 -- Strip off leading mailpath.
57                 local box = string.match(line, mailpath .. "/*([^/]+)")
58                 local nummails = string.len(mailstring)
59                 if nummails > 0
60                 then
61                     boxes[box] = nummails
62                 end
63             end
64         until line == nil
65
66         table.sort(boxes)
67
68         newmail = "no mail"
69
70         local count = 0
71         for box, number in pairs(boxes)
72         do
73             count = count + 1
74             -- Add this box only if it's not to be ignored.
75             if not util.element_in_table(box, ignore_boxes)
76             then
77                 if newmail == ""
78                 then
79                     newmail = box .. "(" .. number .. ")"
80                 else
81                     newmail = newmail .. ", " ..
82                               box .. "(" .. number .. ")"
83                 end
84             end
85         end
86
87         widget = maildir.widget
88         settings()
89     end
90
91     newtimer(mailpath, timeout, update, true)
92     return maildir.widget
93 end
94
95 return setmetatable(maildir, { __call = function(_, ...) return worker(...) end })