1 ;;; gnus-delay.el --- Delayed posting of articles -*- coding: latin-1; -*-
3 ;; Copyright (C) 2001 Free Software Foundation, Inc.
5 ;; Author: Kai Großjohann <Kai.Grossjohann@CS.Uni-Dortmund.DE>
6 ;; Keywords: mail, news, extensions
8 ;; This file is free software; you can redistribute it and/or modify
9 ;; it under the terms of the GNU General Public License as published by
10 ;; the Free Software Foundation; either version 2, or (at your option)
13 ;; This file is distributed in the hope that it will be useful,
14 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
15 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 ;; GNU General Public License for more details.
18 ;; You should have received a copy of the GNU General Public License
19 ;; along with GNU Emacs; see the file COPYING. If not, write to
20 ;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 ;; Boston, MA 02111-1307, USA.
25 ;; Provide delayed posting of articles.
32 (defvar gnus-delay-group "delayed"
33 "Group name for storing delayed articles.")
35 (defvar gnus-delay-header "X-Gnus-Delayed"
36 "Header name for storing info about delayed articles.")
38 (defvar gnus-delay-default-delay "3d"
39 "*Default length of delay.")
41 (defvar gnus-delay-default-hour 8
42 "*If deadline is given as date, then assume this time of day.")
44 (defun gnus-delay-article (delay)
45 "Delay this article by some time.
46 DELAY is a string, giving the length of the time. Possible values are:
48 * <digits><units> for <units> in minutes (`m'), hours (`h'), days (`d'),
49 weeks (`w'), months (`M'), or years (`Y');
51 * YYYY-MM-DD for a specific date. The time of day is given by the
52 variable `gnus-delay-default-hour', minute and second are zero.
54 * hh:mm for a specific time. Use 24h format. If it is later than this
55 time, then the deadline is tomorrow, else today."
58 "Target date (YYYY-MM-DD) or length of delay (units in [mhdwMY]): "
59 gnus-delay-default-delay)))
60 (let (num unit days year month day hour minute deadline)
62 "\\([0-9][0-9][0-9]?[0-9]?\\)-\\([0-9]+\\)-\\([0-9]+\\)"
64 (setq year (string-to-number (match-string 1 delay))
65 month (string-to-number (match-string 2 delay))
66 day (string-to-number (match-string 3 delay)))
69 (encode-time 0 0 ; second and minute
70 gnus-delay-default-hour
72 ((string-match "\\([0-9]+\\):\\([0-9]+\\)" delay)
73 (setq hour (string-to-number (match-string 1 delay))
74 minute (string-to-number (match-string 2 delay)))
75 ;; Use current time, except...
76 (setq deadline (apply 'vector (decode-time (current-time))))
77 ;; ... for minute and hour.
78 (aset deadline 1 minute)
79 (aset deadline 2 hour)
80 ;; Convert to seconds.
81 (setq deadline (time-to-seconds (apply 'encode-time
82 (append deadline nil))))
83 ;; If this time has passed already, add a day.
84 (when (< deadline (time-to-seconds (current-time)))
85 (setq deadline (+ 3600 deadline))) ;3600 secs/day
86 ;; Convert seconds to date header.
87 (setq deadline (message-make-date
88 (seconds-to-time deadline))))
89 ((string-match "\\([0-9]+\\)\\s-*\\([mhdwMY]\\)" delay)
90 (setq num (match-string 1 delay))
91 (setq unit (match-string 2 delay))
92 ;; Start from seconds, then multiply into needed units.
93 (setq num (string-to-number num))
94 (cond ((string= unit "Y")
95 (setq delay (* num 60 60 24 365)))
97 (setq delay (* num 60 60 24 30)))
99 (setq delay (* num 60 60 24 7)))
101 (setq delay (* num 60 60 24)))
103 (setq delay (* num 60 60)))
105 (setq delay (* num 60))))
106 (setq deadline (message-make-date
107 (seconds-to-time (+ (time-to-seconds (current-time))
109 (t (error "Malformed delay `%s'" delay)))
110 (message-add-header (format "%s: %s" gnus-delay-header deadline)))
111 (set-buffer-modified-p t)
112 (nndraft-request-create-group gnus-delay-group)
113 (message-disassociate-draft)
114 (nndraft-request-associate-buffer gnus-delay-group)
116 (kill-buffer (current-buffer))
117 (message-do-actions message-postpone-actions))
119 (defun gnus-delay-send-drafts ()
120 "Send all the delayed messages that are due now."
123 (let* ((group (format "nndraft:%s" gnus-delay-group))
126 (gnus-activate-group group)
127 (setq articles (nndraft-articles))
128 (while (setq article (pop articles))
129 (gnus-request-head article group)
130 (set-buffer nntp-server-buffer)
131 (goto-char (point-min))
132 (if (re-search-forward
133 (concat "^" (regexp-quote gnus-delay-header) ":\\s-+")
136 (setq deadline (nnheader-header-value))
137 (setq deadline (apply 'encode-time (parse-time-string deadline)))
138 (setq deadline (time-since deadline))
139 (when (and (>= (nth 0 deadline) 0)
140 (>= (nth 1 deadline) 0))
141 (message "Sending delayed article %d" article)
142 (gnus-draft-send article group)
143 (message "Sending delayed article %d...done" article)))
144 (message "Delay header missing for article %d" article))))))
147 (defun gnus-delay-initialize (&optional no-keymap no-check)
148 "Initialize the gnus-delay package.
149 This sets up a key binding in `message-mode' to delay a message.
150 This tells Gnus to look for delayed messages after getting new news.
152 Key binding is skipped if optional arg NO-KEYMAP is non-nil.
153 Checking delayed messages is skipped if optional arg NO-CHECK is non-nil."
156 (define-key message-mode-map "\C-c\n" 'gnus-delay-article))
158 (add-hook 'gnus-get-new-news-hook 'gnus-delay-send-drafts)))
160 (provide 'gnus-delay)
161 ;;; gnus-delay.el ends here