summaryrefslogtreecommitdiffhomepage
path: root/net/jao-maildir.el
blob: 2c4d67c0892ebe867fd901d127b4cb44bb4a3483 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
;; jao-maildir.el -- Utilities for reading maildirs -*- lexical-binding: t; -*-

;; Copyright (c) 2019 jao

;; Author: jao <mail@jao.io>
;; Start date: Sun Dec 01, 2019 15:48
;; Keywords: mail

;; This file is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 3, or (at your option)
;; any later version.

;; This file is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING.  If not, write to
;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.

;;; Comentary:

;; Inspecting the contents of maildirs and reporting it.

;;; Code:

(defvar jao-maildirs nil)
(defvar jao-maildir-counts nil)
(defvar jao-maildir-debug-p nil)

(defun jao-maildir--maildir-new (mbox) (expand-file-name "new" mbox))

(defun jao-maildir--maildir-new-count (mbox)
  (- (length (directory-files (jao-maildir--maildir-new mbox))) 2))

(defun jao-maildir-counts ()
  (mapcar (lambda (mbox) (cons mbox (jao-maildir--maildir-new-count mbox)))
          jao-maildirs))

(defvar jao-maildir--watches nil)

(defun jao-maildir-cancel-watchers ()
  (dolist (w jao-maildir--watches) (file-notify-rm-watch w))
  (setq jao-maildir--watches nil))

(defun jao-maildir--log-watch (mbox e)
  (when jao-maildir-debug-p
    (message "watch: %s: %s" mbox e)))

(defun jao-maildir--watcher (mbox cb)
  (lambda (e)
    (jao-maildir--log-watch e mbox)
    (when (memq (cadr e) '(created deleted))
      (setcdr (assoc mbox jao-maildir-counts)
              (jao-maildir--maildir-new-count mbox))
      (when cb (funcall cb mbox)))))

(defun jao-maildir--setup-watches (cb)
  (jao-maildir-cancel-watchers)
  (setq jao-maildir--watches
        (mapcar (lambda (mbox)
                  (file-notify-add-watch (jao-maildir--maildir-new mbox)
                                         '(change)
                                         (jao-maildir--watcher mbox cb)))
                jao-maildirs)))

(defun jao-maildir-setup (maildirs &optional cb)
  (setq jao-maildirs maildirs)
  (setq jao-maildir-counts (jao-maildir-counts))
  (jao-maildir--setup-watches cb))


(provide 'jao-maildir)
;;; jao-maildir.el ends here