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-set-read-delayed
67 elmo-folder-unset-read-delayed
68 elmo-folder-set-important-delayed
69 elmo-folder-unset-important-delayed
70 elmo-folder-set-answered-delayed
71 elmo-folder-unset-answered-delayed))
73 (defvar elmo-dop-queue-method-name-alist
74 '((elmo-folder-append-buffer-dop-delayed . "Append")
75 (elmo-folder-delete-messages-dop-delayed . "Delete")
76 (elmo-message-encache . "Encache")
77 (elmo-folder-create-dop-delayed . "Create")
78 (elmo-folder-set-read-delayed . "Read")
79 (elmo-folder-unset-read-delayed . "Unread")
80 (elmo-folder-set-answered-delayed . "Answered")
81 (elmo-folder-unset-answered-delayed . "Unanswered")
82 (elmo-folder-set-important-delayed . "Important")
83 (elmo-folder-unset-important-delayed . "Unimportant")
84 (elmo-folder-set-flag . "Set flag")
85 (elmo-folder-unset-flag . "Unset flag")))
87 (defmacro elmo-dop-queue-method-name (queue)
88 `(cdr (assq (elmo-dop-queue-method ,queue)
89 elmo-dop-queue-method-name-alist)))
91 (defun elmo-dop-queue-flush ()
92 "Flush disconnected operations that consern plugged folders."
94 (unless (or (null elmo-dop-queue)
95 (vectorp (car elmo-dop-queue)))
97 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 (elmo-dop-queue-merge)
104 (let ((queue-all elmo-dop-queue)
109 (if (elmo-folder-plugged-p
110 (elmo-make-folder (elmo-dop-queue-fname (car queue-all))))
111 (setq queue (append queue (list (car queue-all)))))
112 (setq queue-all (cdr queue-all)))
113 (setq count (length queue))
116 (format "%d pending operation(s) exists. Perform now? " count)
117 (not elmo-dop-flush-confirm) t)
121 (let ((queue elmo-dop-queue)
124 (num (length elmo-dop-queue))
127 ;; now perform pending processes.
130 (message "Flushing queue....%d/%d." i num)
133 (apply (elmo-dop-queue-method (car queue))
137 (elmo-dop-queue-fname (car queue))))
138 (elmo-folder-open folder)
139 (unless (elmo-folder-plugged-p folder)
140 (error "Unplugged")))
141 (elmo-dop-queue-arguments (car queue)))
142 (elmo-folder-close folder))
143 (quit (setq failure t))
144 (error (setq failure err)))
147 (setq elmo-dop-queue (delq (car queue) elmo-dop-queue))
148 (setq performed (+ 1 performed)))
149 (setq queue (cdr queue)))
150 (message "%d/%d operation(s) are performed successfully."
153 (elmo-dop-queue-save)))
154 ;; when answer=NO against performing dop
155 (if (elmo-y-or-n-p "Clear these pending operations? "
156 (not elmo-dop-flush-confirm) t)
159 (setq elmo-dop-queue (delq (car queue) elmo-dop-queue))
160 (setq queue (cdr queue)))
161 (message "Pending operations are cleared.")
162 (elmo-dop-queue-save))
166 (defun elmo-dop-queue-merge ()
167 (let ((queue elmo-dop-queue)
168 new-queue match-queue que)
169 (while (setq que (car queue))
171 (memq (elmo-dop-queue-method que)
172 elmo-dop-queue-merge-method-list)
179 (string= (elmo-dop-queue-fname que)
180 (elmo-dop-queue-fname nqueue))
181 (string= (elmo-dop-queue-method que)
182 (elmo-dop-queue-method nqueue)))
185 (setcar (elmo-dop-queue-arguments match-queue)
186 (append (car (elmo-dop-queue-arguments match-queue))
187 (car (elmo-dop-queue-arguments que))))
188 (setq new-queue (nconc new-queue (list que))))
189 (setq queue (cdr queue)) )
190 (setq elmo-dop-queue new-queue)))
193 (defmacro elmo-dop-spool-folder (folder)
194 "Return a spool folder for disconnected operations
195 which is corresponded to the FOLDER."
197 (concat "+" (expand-file-name "spool" (elmo-folder-msgdb-path
200 (defun elmo-dop-spool-folder-append-buffer (folder)
201 "Append current buffer content to the dop spool folder.
202 FOLDER is the folder structure.
203 Return a message number."
204 (setq folder (elmo-dop-spool-folder folder))
205 (unless (elmo-folder-exists-p folder)
206 (elmo-folder-create folder))
207 (let ((new-number (1+ (car (elmo-folder-status folder)))))
208 ;; dop folder is a localdir folder.
209 (write-region-as-binary (point-min) (point-max)
211 (int-to-string new-number)
212 (elmo-localdir-folder-directory-internal folder))
217 (defun elmo-dop-spool-folder-list-messages (folder)
218 "List messages in the dop spool folder.
219 FOLDER is the folder structure."
220 (setq folder (elmo-dop-spool-folder folder))
221 (if (elmo-folder-exists-p folder)
222 (elmo-folder-list-messages folder)))
224 (defun elmo-dop-list-deleting-messages (folder)
225 "List messages which are on the deleting queue for the folder.
226 FOLDER is the folder structure."
228 (dolist (queue elmo-dop-queue)
229 (if (and (string= (elmo-dop-queue-fname queue)
230 (elmo-folder-name-internal folder))
231 (eq (elmo-dop-queue-method queue)
232 'elmo-folder-delete-messages-dop-delayed))
233 (setq messages (nconc messages
236 (car (elmo-dop-queue-arguments queue)))))))))
239 (defsubst elmo-folder-append-buffer-dop (folder &optional flag number)
240 (elmo-dop-queue-append
241 folder 'elmo-folder-append-buffer-dop-delayed
243 (elmo-dop-spool-folder-append-buffer
247 (defsubst elmo-folder-delete-messages-dop (folder numbers)
248 (let ((spool-folder (elmo-dop-spool-folder folder))
250 (dolist (number numbers)
252 (elmo-folder-delete-messages spool-folder
253 (list (abs number))) ; delete from queue
254 (setq queue (cons number queue))))
256 (elmo-dop-queue-append folder 'elmo-folder-delete-messages-dop-delayed
260 (cons number (elmo-message-field
261 folder number 'message-id)))
265 (defsubst elmo-message-encache-dop (folder number &optional read)
266 (elmo-dop-queue-append folder 'elmo-message-encache (list number read)))
268 (defsubst elmo-folder-create-dop (folder)
269 (elmo-dop-queue-append folder 'elmo-folder-create-dop-delayed nil))
271 (defsubst elmo-folder-set-flag-dop (folder numbers flag)
272 (let ((method (case flag
274 'elmo-folder-unset-read-delayed)
276 'elmo-folder-set-read-delayed)
278 'elmo-folder-set-important-delayed)
280 'elmo-folder-set-answered-delayed))))
282 (elmo-dop-queue-append folder method (list numbers))
283 (elmo-dop-queue-append folder 'elmo-folder-set-flag
284 (list numbers flag)))))
286 (defsubst elmo-folder-unset-flag-dop (folder numbers flag)
287 (let ((method (case flag
289 'elmo-folder-set-read-delayed)
291 'elmo-folder-unset-read-delayed)
293 'elmo-folder-unset-important-delayed)
295 'elmo-folder-unset-answered-delayed))))
297 (elmo-dop-queue-append folder method (list numbers))
298 (elmo-dop-queue-append folder 'elmo-folder-unset-flag
299 (list numbers flag)))))
301 ;;; Execute as subsutitute for plugged operation.
302 (defun elmo-folder-status-dop (folder)
303 (let ((number-list (elmo-folder-list-messages folder nil 'in-msgdb))
304 (spool-folder (elmo-dop-spool-folder folder))
307 (setq spool-length (or (if (elmo-folder-exists-p spool-folder)
308 (car (elmo-folder-status spool-folder)))
310 (setq max-num (if number-list (apply #'max number-list) 0))
311 (cons (+ max-num spool-length) (+ (length number-list) spool-length))))
313 (defun elmo-folder-next-message-number-dop (folder)
314 (let ((number-list (elmo-folder-list-messages folder nil 'in-msgdb))
315 (spool-folder (elmo-dop-spool-folder folder))
318 (setq spool-length (or (if (elmo-folder-exists-p spool-folder)
319 (car (elmo-folder-status spool-folder)))
321 (setq max-num (if number-list (apply #'max number-list) 0))
322 (+ max-num spool-length)))
324 ;;; Delayed operation (executed at online status).
325 (defun elmo-folder-append-buffer-dop-delayed (folder flag number set-number)
326 (let ((spool-folder (elmo-dop-spool-folder folder))
327 (flags (cond ((listp flag)
334 failure saved dequeued)
336 (if (elmo-message-fetch spool-folder number
337 (elmo-make-fetch-strategy 'entire)
338 nil (current-buffer) 'unread)
341 (elmo-folder-append-buffer
345 (error (setq failure t)))
346 (setq dequeued t)) ; Already deletef from queue.
349 (setq saved (elmo-folder-append-buffer
350 (elmo-make-folder elmo-lost+found-folder)
353 (if (and (not dequeued) ; if dequeued, no need to delete.
354 (or (not failure) ; succeed
355 saved)) ; in lost+found
356 (elmo-folder-delete-messages spool-folder (list number)))
359 (defun elmo-folder-delete-messages-dop-delayed (folder number-alist)
361 (elmo-folder-delete-messages
363 ;; messages are deleted only if message-id is not changed.
369 (elmo-message-fetch-field folder (car pair)
372 t)) ; Always success (If failure, just remain)
374 (defun elmo-folder-create-dop-delayed (folder)
375 (unless (elmo-folder-exists-p folder)
376 (elmo-folder-create folder)))
378 (defun elmo-folder-set-important-delayed (folder numbers)
379 (elmo-folder-set-flag folder numbers 'important))
381 (defun elmo-folder-unset-important-delayed (folder numbers)
382 (elmo-folder-unset-flag folder numbers 'important))
384 (defun elmo-folder-set-read-delayed (folder numbers)
385 (elmo-folder-set-flag folder numbers 'read))
387 (defun elmo-folder-unset-read-delayed (folder numbers)
388 (elmo-folder-unset-flag folder numbers 'read))
390 (defun elmo-folder-set-answered-delayed (folder numbers)
391 (elmo-folder-set-flag folder numbers 'answered))
393 (defun elmo-folder-unset-answered-delayed (folder numbers)
394 (elmo-folder-unset-flag folder numbers 'answered))
397 (defun elmo-dop-msgdb (msgdb)
398 (let ((new-db (elmo-make-msgdb))
400 (dolist (dop-entity (mapcar
402 (setq entity (elmo-msgdb-message-entity
404 (elmo-message-entity-set-number
406 (* -1 (elmo-message-entity-number entity)))
408 (elmo-msgdb-list-messages msgdb)))
409 (elmo-msgdb-append-entity new-db
413 (abs (elmo-message-entity-number
418 (product-provide (provide 'elmo-dop) (require 'elmo-version))
420 ;;; elmo-dop.el ends here