1 ;;; elmo-dop.el --- Modules for Disconnected Operations on ELMO.
3 ;; Copyright (C) 1998,1999,2000 Yuuichi Teranishi <teranisi@gohome.org>
5 ;; Author: Yuuichi Teranishi <teranisi@gohome.org>
6 ;; Keywords: mail, net news
8 ;; This file is part of ELMO (Elisp Library for Message Orchestration).
10 ;; This program is free software; you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2, or (at your option)
15 ;; This program is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 ;; Boston, MA 02111-1307, USA.
36 (require 'elmo-localdir)
39 (defvar elmo-dop-queue nil
40 "A list of (folder-name function-to-be-called argument-list).
41 Automatically loaded/saved.")
43 (defmacro elmo-make-dop-queue (fname method arguments)
45 (` (vector (, fname) (, method) (, arguments))))
47 (defmacro elmo-dop-queue-fname (queue)
48 "Return the folder name string of the QUEUE."
49 (` (aref (, queue) 0)))
51 (defmacro elmo-dop-queue-method (queue)
52 "Return the method symbol of the QUEUE."
53 (` (aref (, queue) 1)))
55 (defmacro elmo-dop-queue-arguments (queue)
56 "Return the arguments of the QUEUE."
57 (` (aref (, queue) 2)))
59 (defun elmo-dop-queue-append (folder method arguments)
60 "Append to disconnected operation queue."
61 (let ((queue (elmo-make-dop-queue (elmo-folder-name-internal folder)
63 (setq elmo-dop-queue (nconc elmo-dop-queue (list queue)))))
65 (defvar elmo-dop-queue-merge-method-list
66 '(elmo-folder-mark-as-read
67 elmo-folder-unmark-read
68 elmo-folder-mark-as-important
69 elmo-folder-unmark-important))
71 (defvar elmo-dop-queue-method-name-alist
72 '((elmo-folder-append-buffer-dop-delayed . "Append")
73 (elmo-folder-delete-messages-dop-delayed . "Delete")
74 (elmo-message-encache . "Encache")
75 (elmo-folder-create-dop-delayed . "Create")
76 (elmo-folder-mark-as-read . "Read")
77 (elmo-folder-unmark-read . "Unread")
78 (elmo-folder-mark-as-important . "Important")
79 (elmo-folder-unmark-important . "Unimportant")))
81 (defmacro elmo-dop-queue-method-name (queue)
82 `(cdr (assq (elmo-dop-queue-method ,queue)
83 elmo-dop-queue-method-name-alist)))
85 (defun elmo-dop-queue-flush (&optional force)
86 "Flush disconnected operations.
87 If optional argument FORCE is non-nil, try flushing all operation queues
88 even an operation concerns the unplugged folder."
89 (elmo-dop-queue-merge)
90 (let ((queue elmo-dop-queue)
95 (unless (or (null queue)
96 (vectorp (car queue)))
97 (if (y-or-n-p "Saved queue is old version(2.6). Clear all pending operations? ")
99 (setq elmo-dop-queue nil)
100 (message "All pending operations are cleared.")
101 (elmo-dop-queue-save))
102 (error "Please use 2.6 or earlier.")))
103 (setq count (length queue))
106 (format "%d pending operation(s) exists. Perform now? " count)
107 (not elmo-dop-flush-confirm) t)
111 (let ((queue elmo-dop-queue)
114 (num (length elmo-dop-queue))
117 ;; now perform pending processes.
120 (message "Flushing queue....%d/%d." i num)
123 (apply (elmo-dop-queue-method (car queue))
127 (elmo-dop-queue-fname (car queue))))
128 (elmo-folder-open folder)
129 (unless (elmo-folder-plugged-p folder)
130 (error "Unplugged.")))
131 (elmo-dop-queue-arguments (car queue)))
132 (elmo-folder-close folder))
133 (quit (setq failure t))
134 (error (setq failure err)))
137 (setq elmo-dop-queue (delq (car queue) elmo-dop-queue))
138 (setq performed (+ 1 performed)))
139 (setq queue (cdr queue)))
140 (message "%d/%d operation(s) are performed successfully."
143 (elmo-dop-queue-save)))
144 (if (elmo-y-or-n-p "Clear all pending operations? "
145 (not elmo-dop-flush-confirm) t)
147 (setq elmo-dop-queue nil)
148 (message "All pending operations are cleared.")
149 (elmo-dop-queue-save))
153 (defun elmo-dop-queue-merge ()
154 (let ((queue elmo-dop-queue)
155 new-queue match-queue que)
156 (while (setq que (car queue))
158 (memq (elmo-dop-queue-method que)
159 elmo-dop-queue-merge-method-list)
166 (string= (elmo-dop-queue-fname que)
167 (elmo-dop-queue-fname nqueue))
168 (string= (elmo-dop-queue-method que)
169 (elmo-dop-queue-method nqueue)))
172 (setcar (elmo-dop-queue-arguments match-queue)
173 (append (car (elmo-dop-queue-arguments match-queue))
174 (car (elmo-dop-queue-arguments que))))
175 (setq new-queue (nconc new-queue (list que))))
176 (setq queue (cdr queue)) )
177 (setq elmo-dop-queue new-queue)))
180 (defmacro elmo-dop-spool-folder (folder)
181 "Return a spool folder for disconnected operations
182 which is corresponded to the FOLDER."
184 (concat "+" (expand-file-name "spool" (elmo-folder-msgdb-path
187 (defun elmo-dop-spool-folder-append-buffer (folder)
188 "Append current buffer content to the dop spool folder.
189 FOLDER is the folder structure.
190 Return a message number."
191 (setq folder (elmo-dop-spool-folder folder))
192 (unless (elmo-folder-exists-p folder)
193 (elmo-folder-create folder))
194 (let ((new-number (1+ (car (elmo-folder-status folder)))))
195 ;; dop folder is a localdir folder.
196 (write-region-as-binary (point-min) (point-max)
198 (int-to-string new-number)
199 (elmo-localdir-folder-directory-internal folder))
204 (defun elmo-dop-spool-folder-list-messages (folder)
205 "List messages in the dop spool folder.
206 FOLDER is the folder structure."
207 (setq folder (elmo-dop-spool-folder folder))
208 (if (elmo-folder-exists-p folder)
209 (elmo-folder-list-messages folder)))
211 (defun elmo-dop-list-deleting-messages (folder)
212 "List messages which are on the deleting queue for the folder.
213 FOLDER is the folder structure."
215 (dolist (queue elmo-dop-queue)
216 (if (and (string= (elmo-dop-queue-fname queue)
217 (elmo-folder-name-internal folder))
218 (eq (elmo-dop-queue-method queue)
219 'elmo-folder-delete-messages-dop-delayed))
220 (setq messages (nconc messages
223 (car (elmo-dop-queue-arguments queue)))))))))
226 (defsubst elmo-folder-append-buffer-dop (folder unread &optional number)
227 (elmo-dop-queue-append
228 folder 'elmo-folder-append-buffer-dop-delayed
230 (elmo-dop-spool-folder-append-buffer
234 (defsubst elmo-folder-delete-messages-dop (folder numbers)
235 (let ((spool-folder (elmo-dop-spool-folder folder))
237 (dolist (number numbers)
239 (elmo-folder-delete-messages spool-folder
240 (list (abs number))) ; delete from queue
241 (setq queue (cons number queue))))
243 (elmo-dop-queue-append folder 'elmo-folder-delete-messages-dop-delayed
247 (cons number (elmo-message-field
248 folder number 'message-id)))
252 (defsubst elmo-message-encache-dop (folder number &optional read)
253 (elmo-dop-queue-append folder 'elmo-message-encache (list number read)))
255 (defsubst elmo-folder-create-dop (folder)
256 (elmo-dop-queue-append folder 'elmo-folder-create-dop-delayed nil))
258 (defsubst elmo-folder-mark-as-read-dop (folder numbers)
259 (elmo-dop-queue-append folder 'elmo-folder-mark-as-read (list numbers)))
261 (defsubst elmo-folder-unmark-read-dop (folder numbers)
262 (elmo-dop-queue-append folder 'elmo-folder-unmark-read (list numbers)))
264 (defsubst elmo-folder-mark-as-important-dop (folder numbers)
265 (elmo-dop-queue-append folder 'elmo-folder-mark-as-important (list numbers)))
267 (defsubst elmo-folder-unmark-important-dop (folder numbers)
268 (elmo-dop-queue-append folder 'elmo-folder-unmark-important (list numbers)))
270 ;;; Execute as subsutitute for plugged operation.
271 (defun elmo-folder-status-dop (folder)
272 (let* ((number-alist (elmo-msgdb-number-load
273 (elmo-folder-msgdb-path folder)))
274 (number-list (mapcar 'car number-alist))
275 (spool-folder (elmo-dop-spool-folder folder))
279 (setq spool-length (car (if (elmo-folder-exists-p spool-folder)
280 (elmo-folder-status spool-folder))))
282 (or (nth (max (- (length number-list) 1) 0) number-list)
284 (cons (+ max-num spool-length) (+ (length number-list) spool-length))))
286 ;;; Delayed operation (executed at online status).
287 (defun elmo-folder-append-buffer-dop-delayed (folder unread number set-number)
288 (let ((spool-folder (elmo-dop-spool-folder folder))
289 failure saved dequeued)
291 (if (elmo-message-fetch spool-folder number
292 (elmo-make-fetch-strategy 'entire)
293 nil (current-buffer) 'unread)
296 (elmo-folder-append-buffer
297 folder unread set-number)))
298 (error (setq failure t)))
299 (setq dequeued t)) ; Already deletef from queue.
302 (setq saved (elmo-folder-append-buffer
303 (elmo-make-folder elmo-lost+found-folder)
305 (if (and (not dequeued) ; if dequeued, no need to delete.
306 (or (not failure) ; succeed
307 saved)) ; in lost+found
308 (elmo-folder-delete-messages spool-folder (list number)))
311 (defun elmo-folder-delete-messages-dop-delayed (folder number-alist)
312 (elmo-folder-delete-messages
314 ;; messages are deleted only if message-id is not changed.
320 (elmo-message-fetch-field folder (car pair)
324 (defun elmo-folder-create-dop-delayed (folder)
325 (unless (elmo-folder-exists-p folder)
326 (elmo-folder-create folder)))
329 (defun elmo-dop-msgdb (msgdb)
330 (list (mapcar (function
332 (elmo-msgdb-overview-entity-set-number
335 (elmo-msgdb-overview-entity-get-number x)))))
345 (cdr x)))) (nth 2 msgdb))))
348 (product-provide (provide 'elmo-dop) (require 'elmo-version))
350 ;;; elmo-dop.el ends here