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 (luna-define-class elmo-flag-folder (elmo-localdir-folder)
48 (flag minfo minfo-hash max-number))
49 (luna-define-internal-accessors 'elmo-flag-folder))
51 (luna-define-method elmo-folder-initialize ((folder
54 (if (string-match "flag/\\([a-z]+\\)" name)
55 (setq name (match-string 1 name))
56 (setq name (symbol-name (car elmo-global-flags)))
57 (elmo-folder-set-name-internal
59 (concat (elmo-folder-name-internal folder) "/" name)))
60 (or (cdr (assq (intern name) elmo-global-flag-folder-alist))
61 (let ((flag (intern name))
63 (elmo-flag-folder-set-flag-internal folder flag)
64 (unless (elmo-global-flag-p flag)
65 (setq elmo-global-flags
66 (nconc elmo-global-flags (list flag))))
67 ;; must be AFTER set flag slot.
68 (setq msgdb-path (elmo-folder-msgdb-path folder))
69 (unless (file-directory-p msgdb-path)
70 (elmo-make-directory msgdb-path))
71 (elmo-localdir-folder-set-dir-name-internal
74 (elmo-localdir-folder-set-directory-internal
77 (if (file-exists-p (expand-file-name "max" msgdb-path))
78 (elmo-flag-folder-set-max-number-internal
80 (elmo-object-load (expand-file-name "max" msgdb-path))))
81 (if (file-exists-p (expand-file-name ".minfo" msgdb-path))
82 (elmo-flag-folder-set-minfo-internal
84 (elmo-object-load (expand-file-name ".minfo" msgdb-path))))
85 (elmo-flag-folder-set-minfo-hash-internal
87 (elmo-make-hash (length (elmo-flag-folder-minfo-internal folder))))
88 (dolist (elem (elmo-flag-folder-minfo-internal folder))
89 (elmo-set-hash-val (nth 1 elem) elem
90 (elmo-flag-folder-minfo-hash-internal folder))
91 (elmo-set-hash-val (concat "#" (number-to-string (nth 2 elem)))
93 (elmo-flag-folder-minfo-hash-internal folder))
94 (dolist (pair (car elem))
95 (elmo-set-hash-val (concat (number-to-string (cdr pair))
98 (elmo-flag-folder-minfo-hash-internal folder))))
99 (setq elmo-global-flag-folder-alist
100 (cons (cons flag folder) elmo-global-flag-folder-alist))
103 (luna-define-method elmo-folder-expand-msgdb-path ((folder elmo-flag-folder))
104 (expand-file-name (concat "flag/"
106 (elmo-flag-folder-flag-internal folder)))
107 elmo-msgdb-directory))
109 (luna-define-method elmo-folder-commit :after ((folder
112 (expand-file-name ".minfo" (elmo-folder-msgdb-path folder))
113 (elmo-flag-folder-minfo-internal folder))
114 (if (elmo-flag-folder-max-number-internal folder)
116 (expand-file-name "max" (elmo-folder-msgdb-path folder))
117 (elmo-flag-folder-max-number-internal folder))))
119 (luna-define-method elmo-folder-list-subfolders ((folder elmo-flag-folder)
121 (let ((dir (expand-file-name "flag" elmo-msgdb-directory)))
122 (mapcar (lambda (flag)
124 (elmo-folder-prefix-internal folder)
125 (symbol-name (elmo-folder-type-internal folder))
130 (mapcar 'intern (delete ".." (delete "." (directory-files dir))))
131 elmo-global-flags)))))
133 (defun elmo-flag-folder-delete-message (folder number
134 &optional keep-referrer)
135 (let* ((elem (elmo-get-hash-val (concat "#" (number-to-string number))
136 (elmo-flag-folder-minfo-hash-internal
139 (dolist (pair (car elem))
140 (when (and (car pair) (cdr pair))
141 (elmo-clear-hash-val (concat (number-to-string (cdr pair)) ":"
143 (elmo-flag-folder-minfo-hash-internal
145 (unless keep-referrer
146 (setq target-folder (elmo-make-folder (car pair)))
147 (elmo-folder-open target-folder 'load-msgdb)
148 ;; Unset the flag of the original folder.
149 ;; (XXX Should the message-id checked?)
150 (elmo-message-unset-flag target-folder (cdr pair)
151 (elmo-flag-folder-flag-internal folder))
152 (elmo-folder-close target-folder))))
153 (elmo-clear-hash-val (concat "#" (number-to-string number))
154 (elmo-flag-folder-minfo-hash-internal
156 (elmo-clear-hash-val (nth 1 elem) (elmo-flag-folder-minfo-hash-internal
158 (elmo-flag-folder-set-minfo-internal
160 (delq elem (elmo-flag-folder-minfo-internal folder))))
163 (luna-define-method elmo-folder-delete-messages ((folder
166 (dolist (number numbers)
167 (elmo-flag-folder-delete-message folder number)
168 (elmo-localdir-delete-message folder number))
169 (elmo-folder-commit folder)
172 ;; Same as localdir except that the flag is always the flag.
173 (luna-define-method elmo-folder-msgdb-create ((folder elmo-flag-folder)
177 (let ((dir (elmo-localdir-folder-directory-internal folder))
178 (new-msgdb (elmo-make-msgdb))
180 (len (length numbers)))
181 (message "Creating msgdb...")
183 (when (setq entity (elmo-localdir-msgdb-create-entity
184 new-msgdb dir (car numbers)))
185 (elmo-msgdb-append-entity new-msgdb entity
186 (list (elmo-flag-folder-flag-internal
188 (when (> len elmo-display-progress-threshold)
190 (elmo-display-progress
191 'elmo-flag-folder-msgdb-create "Creating msgdb..."
193 (setq numbers (cdr numbers)))
194 (message "Creating msgdb...done")
197 (luna-define-method elmo-folder-append-messages ((folder elmo-flag-folder)
200 &optional same-number)
201 (dolist (number numbers)
202 (elmo-global-flag-set (elmo-flag-folder-flag-internal folder)
203 src-folder number (elmo-message-field
207 (elmo-folder-set-flag src-folder
209 (elmo-flag-folder-flag-internal folder))
212 (luna-define-method elmo-folder-append-buffer ((folder elmo-flag-folder)
213 &optional flag number)
214 (error "Cannot append to the flag folder"))
218 (defmacro elmo-flag-get-folder (flag)
219 "Get the flag folder structure for FLAG."
220 `(when (memq ,flag elmo-global-flags)
221 (elmo-make-folder (concat "'flag/" (symbol-name ,flag)))))
223 (defun elmo-flag-folder-referrer (folder number)
224 "Return a list of referrer message information.
225 Each element is a cons cell like following:
227 FNAME is the name of the folder which the message is contained.
228 NUMBER is the number of the message."
229 (when (eq (elmo-folder-type-internal folder) 'flag)
230 (car (elmo-get-hash-val (concat "#" (number-to-string number))
231 (elmo-flag-folder-minfo-hash-internal
235 (defun elmo-global-flag-p (flag)
236 "Return non-nil when FLAG is global."
237 (memq flag elmo-global-flags))
239 (defun elmo-global-flags (fname number)
240 "Return a list of global flags for the message.
241 FNAME is the name string of the folder.
242 NUMBER is the number of the message."
243 (let ((flag-list elmo-global-flags)
246 (setq folder (elmo-flag-get-folder (car flag-list)))
247 (when (elmo-get-hash-val
248 (concat (number-to-string number) ":" fname)
249 (elmo-flag-folder-minfo-hash-internal folder))
250 (setq matches (cons (elmo-flag-folder-flag-internal folder)
252 (setq flag-list (cdr flag-list)))
255 (defun elmo-folder-list-global-flag-messages (folder flag)
256 "List messages which have global flag.
257 FOLDER is the elmo folder structure.
258 FLAG is the symbol of the flag."
259 (when (elmo-global-flag-p flag)
260 (let ((flag-folder (elmo-flag-get-folder flag))
262 (dolist (elem (elmo-flag-folder-minfo-internal flag-folder))
263 (if (setq number (elmo-message-number folder (nth 1 elem)))
264 (setq result (cons number result))))
268 ;; minfo is a list of following cell.
269 ;; ((((FNAME . NUMBER)...(FNAME . NUMBER)) MESSAGE-ID NUMBER-IN-FLAG-FOLDER)
270 ;; minfo-index is the hash table of above with following indice;
271 (defun elmo-global-flags-set (flags folder number message-id)
272 "Set global flags to the message.
273 FLAGS is a list of symbol of the flag.
274 FOLDER is the elmo folder structure.
275 NUMBER is the message number."
277 (elmo-global-flag-set flag folder number message-id)))
279 (defun elmo-local-flag-p (flag)
280 "Return non-nil when flag is not appropriate for global flag."
281 (memq flag elmo-local-flags))
283 (defsubst elmo-global-flag-set-internal (flag folder number message-id)
284 (when (elmo-local-flag-p flag)
285 (error "Cannot treat `%s' as global flag." flag))
287 (let ((flag-folder (elmo-flag-get-folder flag))
288 cache new-file new-number elem)
289 (if (setq elem (elmo-get-hash-val
291 (elmo-flag-folder-minfo-hash-internal
293 ;; Same ID already exists.
294 (when (and folder number
295 (not (member (cons (elmo-folder-name-internal folder)
296 number) (car elem))))
298 (cons (cons (elmo-folder-name-internal folder)
300 (setq new-number (nth 2 elem))
301 (elmo-set-hash-val (concat (number-to-string number)
302 ":" (elmo-folder-name-internal
305 (elmo-flag-folder-minfo-hash-internal
307 ;; Append new element.
308 (elmo-flag-folder-set-max-number-internal
310 (+ (or (elmo-flag-folder-max-number-internal flag-folder)
311 ;; This is the first time.
312 (car (elmo-folder-status flag-folder)))
318 (elmo-flag-folder-max-number-internal flag-folder)))
319 (elmo-localdir-folder-directory-internal flag-folder)))
321 (setq cache (and message-id (elmo-file-cache-get message-id)))
322 (if (and cache (eq (elmo-file-cache-status cache) 'entire))
323 (elmo-copy-file (elmo-file-cache-path cache)
325 (when (and folder number)
326 (elmo-message-fetch folder number (elmo-make-fetch-strategy
328 nil (current-buffer))
329 (write-region-as-binary (point-min) (point-max) new-file nil
331 (elmo-flag-folder-set-minfo-internal
335 (when (and folder number)
336 (list (cons (elmo-folder-name-internal folder)
340 (elmo-flag-folder-minfo-internal flag-folder)))
341 (when (and folder number)
342 (elmo-set-hash-val (concat (number-to-string number)
343 ":" (elmo-folder-name-internal
346 (elmo-flag-folder-minfo-hash-internal
348 (elmo-set-hash-val message-id elem
349 (elmo-flag-folder-minfo-hash-internal
351 (elmo-set-hash-val (concat "#" (number-to-string new-number)) elem
352 (elmo-flag-folder-minfo-hash-internal
354 (elmo-folder-commit flag-folder)
357 (defun elmo-global-flag-set (flag folder number message-id)
358 "Set global flag to the message.
359 FLAG is a symbol of the flag.
360 FOLDER is the elmo folder structure.
361 NUMBER is the message number.
362 MESSAGE-ID is the message-id of the message."
363 (when (elmo-global-flag-p flag)
364 (elmo-global-flag-set-internal flag folder number message-id)))
366 (defun elmo-global-flag-detach (flag folder number &optional delete-if-none)
367 "Detach the message from the global flag.
368 FOLDER is the folder structure.
369 NUMBERS is the message number.
370 If optional DELETE-IF-NONE is non-nil, delete message from flag folder when
371 the message is not flagged in any folder.
372 If DELETE-IF-NONE is a symbol `always',
373 delete message without flagged in other folder."
374 (unless (eq (elmo-folder-type-internal folder) 'flag)
375 (let ((flag-folder (elmo-flag-get-folder flag))
378 (setq key (concat (number-to-string number) ":"
379 (elmo-folder-name-internal folder))
380 elem (elmo-get-hash-val
382 (elmo-flag-folder-minfo-hash-internal flag-folder)))
384 (setcar elem (delete (cons (elmo-folder-name-internal folder)
386 (elmo-clear-hash-val key (elmo-flag-folder-minfo-hash-internal
388 ;; Does not have any referrer, remove.
389 (when (and delete-if-none
390 (or (eq delete-if-none 'always)
392 (elmo-flag-folder-delete-message flag-folder (nth 2 elem)
394 (elmo-localdir-delete-message flag-folder (nth 2 elem))
395 (elmo-folder-commit flag-folder)))))))
397 (defun elmo-global-flag-detach-messages (folder numbers &optional
399 "Detach all messages specified from all global flags.
400 FOLDER is the folder structure.
401 NUMBERS is the message number list.
402 If optional DELETE-IF-NONE is non-nil, delete message from flag folder when
403 the message is not flagged in any folder."
404 (unless (eq (elmo-folder-type-internal folder) 'flag)
405 (dolist (flag elmo-global-flags)
406 (dolist (number numbers)
407 (elmo-global-flag-detach flag folder number delete-if-none)))))
409 (defun elmo-get-global-flags (&optional flags ignore-preserved)
411 Return value is a subset of optional argument FLAGS.
412 If FLAGS is `t', all global flags becomes candidates.
413 If optional IGNORE-PRESERVED is non-nil, preserved flags
414 \(answered, cached, new, unread\) are not included."
415 (let ((result (copy-sequence (if (eq flags t)
416 (setq flags elmo-global-flags)
419 (unless (elmo-global-flag-p (car flags))
420 (setq result (delq (car flags) result)))
421 (setq flags (cdr flags)))
422 (when ignore-preserved
423 (dolist (flag elmo-preserved-flags)
424 (setq result (delq flag result))))
427 ;;; To migrate from global mark folder
428 (defvar elmo-global-mark-filename "global-mark"
429 "Obsolete variable. (Just for migration)")
431 (defun elmo-global-mark-migrate ()
432 "Migrate from 'mark to 'flag. For automatic migration."
433 (when (and (file-exists-p (expand-file-name elmo-global-mark-filename
434 elmo-msgdb-directory))
435 (elmo-global-flag-p 'important)
436 (not (file-exists-p (elmo-folder-expand-msgdb-path
437 (elmo-flag-get-folder 'important)))))
438 (elmo-global-mark-upgrade)))
440 (defun elmo-global-mark-upgrade ()
441 "Upgrade old `global-mark' structure."
443 (when (file-exists-p (expand-file-name
444 elmo-global-mark-filename elmo-msgdb-directory))
445 (message "Upgrading flag structure...")
446 (when (elmo-global-flag-p 'important)
450 elmo-global-mark-filename elmo-msgdb-directory)))
451 (folder (elmo-flag-get-folder 'important))
453 (dolist (elem global-marks)
454 (setq file-cache (elmo-file-cache-get (car elem)))
455 (when (eq (elmo-file-cache-status file-cache) 'entire)
456 (elmo-global-flag-set 'important nil nil (car elem))))))
457 (message "Upgrading flag structure...done")))
459 (luna-define-method elmo-folder-delete :around ((folder elmo-flag-folder))
460 (let ((flag (elmo-flag-folder-flag-internal folder)))
461 (when (luna-call-next-method)
462 (setq elmo-global-flags (delq flag elmo-global-flags))
466 (product-provide (provide 'elmo-flag) (require 'elmo-version))
468 ;;; elmo-flag.el ends here