1 ;;; elmo-flag.el --- global flag handling.
3 ;; Copyright (C) 2003 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.
29 (require 'elmo-localdir)
30 (eval-when-compile (require 'cl))
33 (defcustom elmo-global-flags '(important)
34 "A list of flag symbol which is managed globally by the flag folder."
35 :type '(repeat symbol)
38 (defcustom elmo-local-flags '(unread any digest)
39 "A list of flag symbol which is not treated as global flag."
40 :type '(repeat symbol)
43 (defvar elmo-global-flag-folder-alist nil
44 "Internal variable to hold global-flag-folder structures.")
47 (defconst elmo-flag-char-regexp "]!#$&'+,./0-9:;<=>?@A-Z[^_`a-z|}~-"))
49 (defun elmo-flag-valid-p (flag)
50 (string-match (eval-when-compile
51 (concat "^[" elmo-flag-char-regexp "]+$"))
52 (if (stringp flag) flag (symbol-name flag))))
55 (luna-define-class elmo-flag-folder (elmo-localdir-folder)
56 (flag minfo minfo-hash max-number))
57 (luna-define-internal-accessors 'elmo-flag-folder))
59 (luna-define-method elmo-folder-initialize ((folder
62 (unless (string-match (eval-when-compile
63 (concat "^flag\\(/\\(["
67 (error "Error in folder name `%s'" (elmo-folder-name-internal folder)))
68 (if (match-beginning 1)
69 (setq name (match-string 2 name))
70 (setq name (symbol-name (car elmo-global-flags)))
71 (elmo-folder-set-name-internal
73 (concat (elmo-folder-name-internal folder) "/" name)))
74 (or (cdr (assq (intern name) elmo-global-flag-folder-alist))
75 (let ((flag (intern name))
77 (elmo-flag-folder-set-flag-internal folder flag)
78 (unless (elmo-global-flag-p flag)
79 (setq elmo-global-flags
80 (nconc elmo-global-flags (list flag))))
81 ;; must be AFTER set flag slot.
82 (setq msgdb-path (elmo-folder-msgdb-path folder))
83 (unless (file-directory-p msgdb-path)
84 (elmo-make-directory msgdb-path))
85 (elmo-localdir-folder-set-dir-name-internal
88 (elmo-localdir-folder-set-directory-internal
91 (if (file-exists-p (expand-file-name "max" msgdb-path))
92 (elmo-flag-folder-set-max-number-internal
94 (elmo-object-load (expand-file-name "max" msgdb-path))))
95 (elmo-flag-folder-set-minfo
97 (and (file-exists-p (expand-file-name ".minfo" msgdb-path))
98 (elmo-object-load (expand-file-name ".minfo" msgdb-path))))
99 (setq elmo-global-flag-folder-alist
100 (cons (cons flag folder) elmo-global-flag-folder-alist))
103 (defun elmo-flag-folder-set-minfo (folder minfo)
104 (let ((hash (elmo-make-hash (length minfo))))
106 (elmo-set-hash-val (nth 1 elem) elem hash)
107 (elmo-set-hash-val (concat "#" (number-to-string (nth 2 elem)))
109 (dolist (pair (car elem))
110 (elmo-set-hash-val (concat (number-to-string (cdr pair))
113 (elmo-flag-folder-set-minfo-internal folder minfo)
114 (elmo-flag-folder-set-minfo-hash-internal folder hash)))
116 (luna-define-method elmo-folder-expand-msgdb-path ((folder elmo-flag-folder))
117 (expand-file-name (concat "flag/"
118 (elmo-replace-string-as-filename
120 (elmo-flag-folder-flag-internal folder))))
121 elmo-msgdb-directory))
123 (luna-define-method elmo-folder-commit :after ((folder
126 (expand-file-name ".minfo" (elmo-folder-msgdb-path folder))
127 (elmo-flag-folder-minfo-internal folder))
128 (if (elmo-flag-folder-max-number-internal folder)
130 (expand-file-name "max" (elmo-folder-msgdb-path folder))
131 (elmo-flag-folder-max-number-internal folder))))
133 (luna-define-method elmo-folder-list-subfolders ((folder elmo-flag-folder)
135 (mapcar (lambda (flag)
137 (elmo-folder-prefix-internal folder)
138 (symbol-name (elmo-folder-type-internal folder))
143 (defun elmo-flag-folder-delete-message (folder number
144 &optional keep-referrer)
145 (let* ((elem (elmo-get-hash-val (concat "#" (number-to-string number))
146 (elmo-flag-folder-minfo-hash-internal
149 (dolist (pair (car elem))
150 (when (and (car pair) (cdr pair))
151 (elmo-clear-hash-val (concat (number-to-string (cdr pair)) ":"
153 (elmo-flag-folder-minfo-hash-internal
155 (unless keep-referrer
156 (setq target-folder (elmo-get-folder (car pair)))
157 (elmo-folder-open target-folder 'load-msgdb)
158 ;; Unset the flag of the original folder.
159 ;; (XXX Should the message-id checked?)
160 (elmo-message-unset-flag target-folder (cdr pair)
161 (elmo-flag-folder-flag-internal folder))
162 (elmo-folder-close target-folder))))
163 (elmo-clear-hash-val (concat "#" (number-to-string number))
164 (elmo-flag-folder-minfo-hash-internal
166 (elmo-clear-hash-val (nth 1 elem) (elmo-flag-folder-minfo-hash-internal
168 (elmo-flag-folder-set-minfo-internal
170 (delq elem (elmo-flag-folder-minfo-internal folder))))
173 (luna-define-method elmo-folder-delete-messages-internal ((folder
176 (dolist (number numbers)
177 (elmo-flag-folder-delete-message folder number)
178 (elmo-localdir-delete-message folder number))
179 (elmo-folder-commit folder)
182 ;; Same as localdir except that the flag is always the flag.
183 (luna-define-method elmo-folder-msgdb-create ((folder elmo-flag-folder)
187 (let ((dir (elmo-localdir-folder-directory-internal folder))
188 (new-msgdb (elmo-make-msgdb))
189 (flags (list (elmo-flag-folder-flag-internal folder)))
191 (elmo-with-progress-display (elmo-folder-msgdb-create (length numbers))
193 (dolist (number numbers)
194 (when (setq entity (elmo-localdir-msgdb-create-entity
195 new-msgdb dir number))
196 (elmo-msgdb-append-entity new-msgdb entity flags))
197 (elmo-progress-notify 'elmo-folder-msgdb-create)))
200 (defun elmo-folder-append-messages-*-flag (dst-folder
204 (let ((flag (elmo-flag-folder-flag-internal dst-folder)))
205 (dolist (number numbers)
206 (elmo-global-flag-set flag src-folder number
208 src-folder number 'message-id)))
209 (elmo-folder-set-flag src-folder numbers flag))
212 (luna-define-method elmo-folder-append-buffer ((folder elmo-flag-folder)
213 &optional flag number)
214 (error "Cannot append to the flag folder"))
216 (luna-define-method elmo-folder-unset-flag :before ((folder elmo-flag-folder)
220 (when (eq flag (elmo-flag-folder-flag-internal folder))
221 (error "Cannot unset flag `%s' in this folder" flag)))
225 (defmacro elmo-flag-get-folder (flag)
226 "Get the flag folder structure for FLAG."
227 `(when (memq ,flag elmo-global-flags)
228 (elmo-get-folder (concat "'flag/" (symbol-name ,flag)))))
230 (defun elmo-flag-folder-referrer (folder number)
231 "Return a list of referrer message information.
232 Each element is a cons cell like following:
234 FNAME is the name of the folder which the message is contained.
235 NUMBER is the number of the message."
236 (when (eq (elmo-folder-type-internal folder) 'flag)
237 (car (elmo-get-hash-val (concat "#" (number-to-string number))
238 (elmo-flag-folder-minfo-hash-internal
242 (defun elmo-global-flag-p (flag)
243 "Return non-nil when FLAG is global."
244 (memq flag elmo-global-flags))
246 (defun elmo-global-flags (fname number)
247 "Return a list of global flags for the message.
248 FNAME is the name string of the folder.
249 NUMBER is the number of the message."
250 (let ((flag-list elmo-global-flags)
253 (setq folder (elmo-flag-get-folder (car flag-list)))
254 (when (elmo-get-hash-val
255 (concat (number-to-string number) ":" fname)
256 (elmo-flag-folder-minfo-hash-internal folder))
257 (setq matches (cons (elmo-flag-folder-flag-internal folder)
259 (setq flag-list (cdr flag-list)))
262 (defun elmo-folder-list-global-flag-messages (folder flag)
263 "List messages which have global flag.
264 FOLDER is the elmo folder structure.
265 FLAG is the symbol of the flag."
266 (when (elmo-global-flag-p flag)
267 (let ((flag-folder (elmo-flag-get-folder flag))
269 (dolist (elem (elmo-flag-folder-minfo-internal flag-folder))
270 (if (setq number (elmo-message-number folder (nth 1 elem)))
271 (setq result (cons number result))))
275 ;; minfo is a list of following cell.
276 ;; ((((FNAME . NUMBER)...(FNAME . NUMBER)) MESSAGE-ID NUMBER-IN-FLAG-FOLDER)
277 ;; minfo-index is the hash table of above with following indice;
278 (defun elmo-global-flags-set (flags folder number message-id)
279 "Set global flags to the message.
280 FLAGS is a list of symbol of the flag.
281 FOLDER is the elmo folder structure.
282 NUMBER is the message number."
284 (elmo-global-flag-set flag folder number message-id)))
286 (defun elmo-local-flag-p (flag)
287 "Return non-nil when flag is not appropriate for global flag."
288 (memq flag elmo-local-flags))
290 (defsubst elmo-global-flag-set-internal (flag folder number message-id)
291 (when (elmo-local-flag-p flag)
292 (error "Cannot treat `%s' as global flag" flag))
294 (let ((flag-folder (elmo-flag-get-folder flag))
295 filename cache new-file new-number elem)
296 (if (setq elem (elmo-get-hash-val
298 (elmo-flag-folder-minfo-hash-internal
300 ;; Same ID already exists.
301 (when (and folder number
302 (not (member (cons (elmo-folder-name-internal folder)
303 number) (car elem))))
305 (cons (cons (elmo-folder-name-internal folder)
307 (setq new-number (nth 2 elem))
308 (elmo-set-hash-val (concat (number-to-string number)
309 ":" (elmo-folder-name-internal
312 (elmo-flag-folder-minfo-hash-internal
314 ;; Append new element.
315 (elmo-flag-folder-set-max-number-internal
317 (+ (or (elmo-flag-folder-max-number-internal flag-folder)
318 ;; This is the first time.
319 (car (elmo-folder-status flag-folder)))
325 (elmo-flag-folder-max-number-internal flag-folder)))
326 (elmo-localdir-folder-directory-internal flag-folder)))
328 ((setq filename (elmo-message-file-name folder number))
329 (elmo-copy-file filename new-file))
330 ((and (setq cache (elmo-file-cache-get message-id))
331 (eq (elmo-file-cache-status cache) 'entire))
332 (elmo-copy-file (elmo-file-cache-path cache) new-file))
335 (elmo-message-fetch folder number
336 (elmo-make-fetch-strategy 'entire))
337 (write-region-as-binary (point-min) (point-max) new-file nil
339 (elmo-flag-folder-set-minfo-internal
343 (when (and folder number)
344 (list (cons (elmo-folder-name-internal folder)
348 (elmo-flag-folder-minfo-internal flag-folder)))
349 (when (and folder number)
350 (elmo-set-hash-val (concat (number-to-string number)
351 ":" (elmo-folder-name-internal
354 (elmo-flag-folder-minfo-hash-internal
356 (elmo-set-hash-val message-id elem
357 (elmo-flag-folder-minfo-hash-internal
359 (elmo-set-hash-val (concat "#" (number-to-string new-number)) elem
360 (elmo-flag-folder-minfo-hash-internal
362 (elmo-folder-commit flag-folder)
365 (defun elmo-global-flag-set (flag folder number message-id)
366 "Set global flag to the message.
367 FLAG is a symbol of the flag.
368 FOLDER is the elmo folder structure.
369 NUMBER is the message number.
370 MESSAGE-ID is the message-id of the message."
371 (when (elmo-global-flag-p flag)
372 (elmo-global-flag-set-internal flag folder number message-id)))
374 (defun elmo-global-flag-detach (flag folder number &optional delete-if-none)
375 "Detach the message from the global flag.
376 FOLDER is the folder structure.
377 NUMBERS is the message number.
378 If optional DELETE-IF-NONE is non-nil, delete message from flag folder when
379 the message is not flagged in any folder.
380 If DELETE-IF-NONE is a symbol `always',
381 delete message without flagged in other folder."
382 (unless (and (eq (elmo-folder-type-internal folder) 'flag)
383 (eq (elmo-flag-folder-flag-internal folder) flag))
384 (let ((flag-folder (elmo-flag-get-folder flag))
387 (setq key (concat (number-to-string number) ":"
388 (elmo-folder-name-internal folder))
389 elem (elmo-get-hash-val
391 (elmo-flag-folder-minfo-hash-internal flag-folder)))
393 (setcar elem (delete (cons (elmo-folder-name-internal folder)
395 (elmo-clear-hash-val key (elmo-flag-folder-minfo-hash-internal
397 ;; Does not have any referrer, remove.
398 (when (and delete-if-none
399 (or (eq delete-if-none 'always)
401 (elmo-flag-folder-delete-message flag-folder (nth 2 elem)
403 (elmo-localdir-delete-message flag-folder (nth 2 elem))
404 (elmo-folder-commit flag-folder)))))))
406 (defun elmo-global-flag-detach-messages (folder numbers &optional
408 "Detach all messages specified from all global flags.
409 FOLDER is the folder structure.
410 NUMBERS is the message number list.
411 If optional DELETE-IF-NONE is non-nil, delete message from flag folder when
412 the message is not flagged in any folder."
413 (unless (eq (elmo-folder-type-internal folder) 'flag)
414 (dolist (flag elmo-global-flags)
415 (dolist (number numbers)
416 (elmo-global-flag-detach flag folder number delete-if-none)))))
418 (defun elmo-global-flag-replace-referrer (old-folder new-folder)
419 (dolist (flag elmo-global-flags)
420 (let* ((folder (elmo-flag-get-folder flag))
421 (minfo (elmo-flag-folder-minfo-internal folder))
423 (dolist (entry minfo)
424 (let ((pair (assoc old-folder (nth 0 entry))))
426 (setcar pair new-folder)
429 (elmo-flag-folder-set-minfo folder minfo)
430 (elmo-folder-commit folder)))))
432 (defun elmo-get-global-flags (&optional flags ignore-preserved)
434 Return value is a subset of optional argument FLAGS.
435 If FLAGS is `t', all global flags becomes candidates.
436 If optional IGNORE-PRESERVED is non-nil, preserved flags
437 \(answered, cached, new, unread\) are not included."
438 (let ((result (copy-sequence (if (eq flags t)
439 (setq flags elmo-global-flags)
442 (unless (elmo-global-flag-p (car flags))
443 (setq result (delq (car flags) result)))
444 (setq flags (cdr flags)))
445 (when ignore-preserved
446 (dolist (flag elmo-preserved-flags)
447 (setq result (delq flag result))))
450 (defun elmo-global-flags-initialize (&optional additional-flags)
451 (let ((dir (expand-file-name "flag" elmo-msgdb-directory)))
452 (setq elmo-global-flags
459 (and (file-directory-p dir)
461 (intern (elmo-recover-string-from-filename x)))
464 (directory-files dir))))))
467 ;;; To migrate from global mark folder
468 (defvar elmo-global-mark-filename "global-mark"
469 "Obsolete variable. (Just for migration)")
471 (defun elmo-global-mark-migrate ()
472 "Migrate from 'mark to 'flag. For automatic migration."
473 (when (and (file-exists-p (expand-file-name elmo-global-mark-filename
474 elmo-msgdb-directory))
475 (elmo-global-flag-p 'important)
476 (not (file-exists-p (elmo-folder-msgdb-path
477 (elmo-flag-get-folder 'important)))))
478 (elmo-global-mark-upgrade)))
480 (defun elmo-global-mark-upgrade ()
481 "Upgrade old `global-mark' structure."
483 (when (file-exists-p (expand-file-name
484 elmo-global-mark-filename elmo-msgdb-directory))
485 (message "Upgrading flag structure...")
486 (when (elmo-global-flag-p 'important)
490 elmo-global-mark-filename elmo-msgdb-directory)))
491 (folder (elmo-flag-get-folder 'important))
493 (dolist (elem global-marks)
494 (setq file-cache (elmo-file-cache-get (car elem)))
495 (when (eq (elmo-file-cache-status file-cache) 'entire)
496 (elmo-global-flag-set 'important nil nil (car elem))))))
497 (message "Upgrading flag structure...done")))
499 (luna-define-method elmo-folder-delete :around ((folder elmo-flag-folder))
500 (let ((flag (elmo-flag-folder-flag-internal folder)))
501 (when (luna-call-next-method)
502 (setq elmo-global-flags (delq flag elmo-global-flags))
503 (setq elmo-global-flag-folder-alist
504 (delq (assq flag elmo-global-flag-folder-alist)
505 elmo-global-flag-folder-alist))
509 (product-provide (provide 'elmo-flag) (require 'elmo-version))
511 ;;; elmo-flag.el ends here