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 (if (file-exists-p (expand-file-name ".minfo" msgdb-path))
96 (elmo-flag-folder-set-minfo-internal
98 (elmo-object-load (expand-file-name ".minfo" msgdb-path))))
99 (elmo-flag-folder-set-minfo-hash-internal
101 (elmo-make-hash (length (elmo-flag-folder-minfo-internal folder))))
102 (dolist (elem (elmo-flag-folder-minfo-internal folder))
103 (elmo-set-hash-val (nth 1 elem) elem
104 (elmo-flag-folder-minfo-hash-internal folder))
105 (elmo-set-hash-val (concat "#" (number-to-string (nth 2 elem)))
107 (elmo-flag-folder-minfo-hash-internal folder))
108 (dolist (pair (car elem))
109 (elmo-set-hash-val (concat (number-to-string (cdr pair))
112 (elmo-flag-folder-minfo-hash-internal folder))))
113 (setq elmo-global-flag-folder-alist
114 (cons (cons flag folder) elmo-global-flag-folder-alist))
117 (luna-define-method elmo-folder-expand-msgdb-path ((folder elmo-flag-folder))
118 (expand-file-name (concat "flag/"
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 (let ((dir (expand-file-name "flag" elmo-msgdb-directory)))
136 (mapcar (lambda (flag)
138 (elmo-folder-prefix-internal folder)
139 (symbol-name (elmo-folder-type-internal folder))
144 (mapcar 'intern (delete ".." (delete "." (directory-files dir))))
145 (copy-sequence elmo-global-flags))))))
147 (defun elmo-flag-folder-delete-message (folder number
148 &optional keep-referrer)
149 (let* ((elem (elmo-get-hash-val (concat "#" (number-to-string number))
150 (elmo-flag-folder-minfo-hash-internal
153 (dolist (pair (car elem))
154 (when (and (car pair) (cdr pair))
155 (elmo-clear-hash-val (concat (number-to-string (cdr pair)) ":"
157 (elmo-flag-folder-minfo-hash-internal
159 (unless keep-referrer
160 (setq target-folder (elmo-make-folder (car pair)))
161 (elmo-folder-open target-folder 'load-msgdb)
162 ;; Unset the flag of the original folder.
163 ;; (XXX Should the message-id checked?)
164 (elmo-message-unset-flag target-folder (cdr pair)
165 (elmo-flag-folder-flag-internal folder))
166 (elmo-folder-close target-folder))))
167 (elmo-clear-hash-val (concat "#" (number-to-string number))
168 (elmo-flag-folder-minfo-hash-internal
170 (elmo-clear-hash-val (nth 1 elem) (elmo-flag-folder-minfo-hash-internal
172 (elmo-flag-folder-set-minfo-internal
174 (delq elem (elmo-flag-folder-minfo-internal folder))))
177 (luna-define-method elmo-folder-delete-messages-internal ((folder
180 (dolist (number numbers)
181 (elmo-flag-folder-delete-message folder number)
182 (elmo-localdir-delete-message folder number))
183 (elmo-folder-commit folder)
186 ;; Same as localdir except that the flag is always the flag.
187 (luna-define-method elmo-folder-msgdb-create ((folder elmo-flag-folder)
191 (let ((dir (elmo-localdir-folder-directory-internal folder))
192 (new-msgdb (elmo-make-msgdb))
194 (len (length numbers)))
195 (message "Creating msgdb...")
197 (when (setq entity (elmo-localdir-msgdb-create-entity
198 new-msgdb dir (car numbers)))
199 (elmo-msgdb-append-entity new-msgdb entity
200 (list (elmo-flag-folder-flag-internal
202 (when (> len elmo-display-progress-threshold)
204 (elmo-display-progress
205 'elmo-flag-folder-msgdb-create "Creating msgdb..."
207 (setq numbers (cdr numbers)))
208 (message "Creating msgdb...done")
211 (luna-define-method elmo-folder-append-messages ((folder elmo-flag-folder)
214 &optional same-number)
215 (dolist (number numbers)
216 (elmo-global-flag-set (elmo-flag-folder-flag-internal folder)
217 src-folder number (elmo-message-field
221 (elmo-folder-set-flag src-folder
223 (elmo-flag-folder-flag-internal folder))
226 (luna-define-method elmo-folder-append-buffer ((folder elmo-flag-folder)
227 &optional flag number)
228 (error "Cannot append to the flag folder"))
230 (luna-define-method elmo-folder-unset-flag :before ((folder elmo-flag-folder)
234 (when (eq flag (elmo-flag-folder-flag-internal folder))
235 (error "Cannot unset flag `%s' in this folder" flag)))
239 (defmacro elmo-flag-get-folder (flag)
240 "Get the flag folder structure for FLAG."
241 `(when (memq ,flag elmo-global-flags)
242 (elmo-make-folder (concat "'flag/" (symbol-name ,flag)))))
244 (defun elmo-flag-folder-referrer (folder number)
245 "Return a list of referrer message information.
246 Each element is a cons cell like following:
248 FNAME is the name of the folder which the message is contained.
249 NUMBER is the number of the message."
250 (when (eq (elmo-folder-type-internal folder) 'flag)
251 (car (elmo-get-hash-val (concat "#" (number-to-string number))
252 (elmo-flag-folder-minfo-hash-internal
256 (defun elmo-global-flag-p (flag)
257 "Return non-nil when FLAG is global."
258 (memq flag elmo-global-flags))
260 (defun elmo-global-flags (fname number)
261 "Return a list of global flags for the message.
262 FNAME is the name string of the folder.
263 NUMBER is the number of the message."
264 (let ((flag-list elmo-global-flags)
267 (setq folder (elmo-flag-get-folder (car flag-list)))
268 (when (elmo-get-hash-val
269 (concat (number-to-string number) ":" fname)
270 (elmo-flag-folder-minfo-hash-internal folder))
271 (setq matches (cons (elmo-flag-folder-flag-internal folder)
273 (setq flag-list (cdr flag-list)))
276 (defun elmo-folder-list-global-flag-messages (folder flag)
277 "List messages which have global flag.
278 FOLDER is the elmo folder structure.
279 FLAG is the symbol of the flag."
280 (when (elmo-global-flag-p flag)
281 (let ((flag-folder (elmo-flag-get-folder flag))
283 (dolist (elem (elmo-flag-folder-minfo-internal flag-folder))
284 (if (setq number (elmo-message-number folder (nth 1 elem)))
285 (setq result (cons number result))))
289 ;; minfo is a list of following cell.
290 ;; ((((FNAME . NUMBER)...(FNAME . NUMBER)) MESSAGE-ID NUMBER-IN-FLAG-FOLDER)
291 ;; minfo-index is the hash table of above with following indice;
292 (defun elmo-global-flags-set (flags folder number message-id)
293 "Set global flags to the message.
294 FLAGS is a list of symbol of the flag.
295 FOLDER is the elmo folder structure.
296 NUMBER is the message number."
298 (elmo-global-flag-set flag folder number message-id)))
300 (defun elmo-local-flag-p (flag)
301 "Return non-nil when flag is not appropriate for global flag."
302 (memq flag elmo-local-flags))
304 (defsubst elmo-global-flag-set-internal (flag folder number message-id)
305 (when (elmo-local-flag-p flag)
306 (error "Cannot treat `%s' as global flag" flag))
308 (let ((flag-folder (elmo-flag-get-folder flag))
309 cache new-file new-number elem)
310 (if (setq elem (elmo-get-hash-val
312 (elmo-flag-folder-minfo-hash-internal
314 ;; Same ID already exists.
315 (when (and folder number
316 (not (member (cons (elmo-folder-name-internal folder)
317 number) (car elem))))
319 (cons (cons (elmo-folder-name-internal folder)
321 (setq new-number (nth 2 elem))
322 (elmo-set-hash-val (concat (number-to-string number)
323 ":" (elmo-folder-name-internal
326 (elmo-flag-folder-minfo-hash-internal
328 ;; Append new element.
329 (elmo-flag-folder-set-max-number-internal
331 (+ (or (elmo-flag-folder-max-number-internal flag-folder)
332 ;; This is the first time.
333 (car (elmo-folder-status flag-folder)))
339 (elmo-flag-folder-max-number-internal flag-folder)))
340 (elmo-localdir-folder-directory-internal flag-folder)))
342 (setq cache (and message-id (elmo-file-cache-get message-id)))
343 (if (and cache (eq (elmo-file-cache-status cache) 'entire))
344 (elmo-copy-file (elmo-file-cache-path cache)
346 (when (and folder number)
347 (elmo-message-fetch folder number
348 (elmo-make-fetch-strategy 'entire))
349 (write-region-as-binary (point-min) (point-max) new-file nil
351 (elmo-flag-folder-set-minfo-internal
355 (when (and folder number)
356 (list (cons (elmo-folder-name-internal folder)
360 (elmo-flag-folder-minfo-internal flag-folder)))
361 (when (and folder number)
362 (elmo-set-hash-val (concat (number-to-string number)
363 ":" (elmo-folder-name-internal
366 (elmo-flag-folder-minfo-hash-internal
368 (elmo-set-hash-val message-id elem
369 (elmo-flag-folder-minfo-hash-internal
371 (elmo-set-hash-val (concat "#" (number-to-string new-number)) elem
372 (elmo-flag-folder-minfo-hash-internal
374 (elmo-folder-commit flag-folder)
377 (defun elmo-global-flag-set (flag folder number message-id)
378 "Set global flag to the message.
379 FLAG is a symbol of the flag.
380 FOLDER is the elmo folder structure.
381 NUMBER is the message number.
382 MESSAGE-ID is the message-id of the message."
383 (when (elmo-global-flag-p flag)
384 (elmo-global-flag-set-internal flag folder number message-id)))
386 (defun elmo-global-flag-detach (flag folder number &optional delete-if-none)
387 "Detach the message from the global flag.
388 FOLDER is the folder structure.
389 NUMBERS is the message number.
390 If optional DELETE-IF-NONE is non-nil, delete message from flag folder when
391 the message is not flagged in any folder.
392 If DELETE-IF-NONE is a symbol `always',
393 delete message without flagged in other folder."
394 (unless (and (eq (elmo-folder-type-internal folder) 'flag)
395 (eq (elmo-flag-folder-flag-internal folder) flag))
396 (let ((flag-folder (elmo-flag-get-folder flag))
399 (setq key (concat (number-to-string number) ":"
400 (elmo-folder-name-internal folder))
401 elem (elmo-get-hash-val
403 (elmo-flag-folder-minfo-hash-internal flag-folder)))
405 (setcar elem (delete (cons (elmo-folder-name-internal folder)
407 (elmo-clear-hash-val key (elmo-flag-folder-minfo-hash-internal
409 ;; Does not have any referrer, remove.
410 (when (and delete-if-none
411 (or (eq delete-if-none 'always)
413 (elmo-flag-folder-delete-message flag-folder (nth 2 elem)
415 (elmo-localdir-delete-message flag-folder (nth 2 elem))
416 (elmo-folder-commit flag-folder)))))))
418 (defun elmo-global-flag-detach-messages (folder numbers &optional
420 "Detach all messages specified from all global flags.
421 FOLDER is the folder structure.
422 NUMBERS is the message number list.
423 If optional DELETE-IF-NONE is non-nil, delete message from flag folder when
424 the message is not flagged in any folder."
425 (unless (eq (elmo-folder-type-internal folder) 'flag)
426 (dolist (flag elmo-global-flags)
427 (dolist (number numbers)
428 (elmo-global-flag-detach flag folder number delete-if-none)))))
430 (defun elmo-get-global-flags (&optional flags ignore-preserved)
432 Return value is a subset of optional argument FLAGS.
433 If FLAGS is `t', all global flags becomes candidates.
434 If optional IGNORE-PRESERVED is non-nil, preserved flags
435 \(answered, cached, new, unread\) are not included."
436 (let ((result (copy-sequence (if (eq flags t)
437 (setq flags elmo-global-flags)
440 (unless (elmo-global-flag-p (car flags))
441 (setq result (delq (car flags) result)))
442 (setq flags (cdr flags)))
443 (when ignore-preserved
444 (dolist (flag elmo-preserved-flags)
445 (setq result (delq flag result))))
448 ;;; To migrate from global mark folder
449 (defvar elmo-global-mark-filename "global-mark"
450 "Obsolete variable. (Just for migration)")
452 (defun elmo-global-mark-migrate ()
453 "Migrate from 'mark to 'flag. For automatic migration."
454 (when (and (file-exists-p (expand-file-name elmo-global-mark-filename
455 elmo-msgdb-directory))
456 (elmo-global-flag-p 'important)
457 (not (file-exists-p (elmo-folder-msgdb-path
458 (elmo-flag-get-folder 'important)))))
459 (elmo-global-mark-upgrade)))
461 (defun elmo-global-mark-upgrade ()
462 "Upgrade old `global-mark' structure."
464 (when (file-exists-p (expand-file-name
465 elmo-global-mark-filename elmo-msgdb-directory))
466 (message "Upgrading flag structure...")
467 (when (elmo-global-flag-p 'important)
471 elmo-global-mark-filename elmo-msgdb-directory)))
472 (folder (elmo-flag-get-folder 'important))
474 (dolist (elem global-marks)
475 (setq file-cache (elmo-file-cache-get (car elem)))
476 (when (eq (elmo-file-cache-status file-cache) 'entire)
477 (elmo-global-flag-set 'important nil nil (car elem))))))
478 (message "Upgrading flag structure...done")))
480 (luna-define-method elmo-folder-delete :around ((folder elmo-flag-folder))
481 (let ((flag (elmo-flag-folder-flag-internal folder)))
482 (when (luna-call-next-method)
483 (setq elmo-global-flags (delq flag elmo-global-flags))
484 (setq elmo-global-flag-folder-alist
485 (delq (assq flag elmo-global-flag-folder-alist)
486 elmo-global-flag-folder-alist))
490 (product-provide (provide 'elmo-flag) (require 'elmo-version))
492 ;;; elmo-flag.el ends here