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/"
119 (elmo-replace-string-as-filename
121 (elmo-flag-folder-flag-internal folder))))
122 elmo-msgdb-directory))
124 (luna-define-method elmo-folder-commit :after ((folder
127 (expand-file-name ".minfo" (elmo-folder-msgdb-path folder))
128 (elmo-flag-folder-minfo-internal folder))
129 (if (elmo-flag-folder-max-number-internal folder)
131 (expand-file-name "max" (elmo-folder-msgdb-path folder))
132 (elmo-flag-folder-max-number-internal folder))))
134 (luna-define-method elmo-folder-list-subfolders ((folder elmo-flag-folder)
136 (mapcar (lambda (flag)
138 (elmo-folder-prefix-internal folder)
139 (symbol-name (elmo-folder-type-internal folder))
144 (defun elmo-flag-folder-delete-message (folder number
145 &optional keep-referrer)
146 (let* ((elem (elmo-get-hash-val (concat "#" (number-to-string number))
147 (elmo-flag-folder-minfo-hash-internal
150 (dolist (pair (car elem))
151 (when (and (car pair) (cdr pair))
152 (elmo-clear-hash-val (concat (number-to-string (cdr pair)) ":"
154 (elmo-flag-folder-minfo-hash-internal
156 (unless keep-referrer
157 (setq target-folder (elmo-get-folder (car pair)))
158 (elmo-folder-open target-folder 'load-msgdb)
159 ;; Unset the flag of the original folder.
160 ;; (XXX Should the message-id checked?)
161 (elmo-message-unset-flag target-folder (cdr pair)
162 (elmo-flag-folder-flag-internal folder))
163 (elmo-folder-close target-folder))))
164 (elmo-clear-hash-val (concat "#" (number-to-string number))
165 (elmo-flag-folder-minfo-hash-internal
167 (elmo-clear-hash-val (nth 1 elem) (elmo-flag-folder-minfo-hash-internal
169 (elmo-flag-folder-set-minfo-internal
171 (delq elem (elmo-flag-folder-minfo-internal folder))))
174 (luna-define-method elmo-folder-delete-messages-internal ((folder
177 (dolist (number numbers)
178 (elmo-flag-folder-delete-message folder number)
179 (elmo-localdir-delete-message folder number))
180 (elmo-folder-commit folder)
183 ;; Same as localdir except that the flag is always the flag.
184 (luna-define-method elmo-folder-msgdb-create ((folder elmo-flag-folder)
188 (let ((dir (elmo-localdir-folder-directory-internal folder))
189 (new-msgdb (elmo-make-msgdb))
191 (len (length numbers)))
192 (message "Creating msgdb...")
194 (when (setq entity (elmo-localdir-msgdb-create-entity
195 new-msgdb dir (car numbers)))
196 (elmo-msgdb-append-entity new-msgdb entity
197 (list (elmo-flag-folder-flag-internal
199 (when (> len elmo-display-progress-threshold)
201 (elmo-display-progress
202 'elmo-flag-folder-msgdb-create "Creating msgdb..."
204 (setq numbers (cdr numbers)))
205 (message "Creating msgdb...done")
208 (luna-define-method elmo-folder-append-messages ((folder elmo-flag-folder)
211 &optional same-number)
212 (dolist (number numbers)
213 (elmo-global-flag-set (elmo-flag-folder-flag-internal folder)
214 src-folder number (elmo-message-field
218 (elmo-folder-set-flag src-folder
220 (elmo-flag-folder-flag-internal folder))
223 (luna-define-method elmo-folder-append-buffer ((folder elmo-flag-folder)
224 &optional flag number)
225 (error "Cannot append to the flag folder"))
227 (luna-define-method elmo-folder-unset-flag :before ((folder elmo-flag-folder)
231 (when (eq flag (elmo-flag-folder-flag-internal folder))
232 (error "Cannot unset flag `%s' in this folder" flag)))
236 (defmacro elmo-flag-get-folder (flag)
237 "Get the flag folder structure for FLAG."
238 `(when (memq ,flag elmo-global-flags)
239 (elmo-get-folder (concat "'flag/" (symbol-name ,flag)))))
241 (defun elmo-flag-folder-referrer (folder number)
242 "Return a list of referrer message information.
243 Each element is a cons cell like following:
245 FNAME is the name of the folder which the message is contained.
246 NUMBER is the number of the message."
247 (when (eq (elmo-folder-type-internal folder) 'flag)
248 (car (elmo-get-hash-val (concat "#" (number-to-string number))
249 (elmo-flag-folder-minfo-hash-internal
253 (defun elmo-global-flag-p (flag)
254 "Return non-nil when FLAG is global."
255 (memq flag elmo-global-flags))
257 (defun elmo-global-flags (fname number)
258 "Return a list of global flags for the message.
259 FNAME is the name string of the folder.
260 NUMBER is the number of the message."
261 (let ((flag-list elmo-global-flags)
264 (setq folder (elmo-flag-get-folder (car flag-list)))
265 (when (elmo-get-hash-val
266 (concat (number-to-string number) ":" fname)
267 (elmo-flag-folder-minfo-hash-internal folder))
268 (setq matches (cons (elmo-flag-folder-flag-internal folder)
270 (setq flag-list (cdr flag-list)))
273 (defun elmo-folder-list-global-flag-messages (folder flag)
274 "List messages which have global flag.
275 FOLDER is the elmo folder structure.
276 FLAG is the symbol of the flag."
277 (when (elmo-global-flag-p flag)
278 (let ((flag-folder (elmo-flag-get-folder flag))
280 (dolist (elem (elmo-flag-folder-minfo-internal flag-folder))
281 (if (setq number (elmo-message-number folder (nth 1 elem)))
282 (setq result (cons number result))))
286 ;; minfo is a list of following cell.
287 ;; ((((FNAME . NUMBER)...(FNAME . NUMBER)) MESSAGE-ID NUMBER-IN-FLAG-FOLDER)
288 ;; minfo-index is the hash table of above with following indice;
289 (defun elmo-global-flags-set (flags folder number message-id)
290 "Set global flags to the message.
291 FLAGS is a list of symbol of the flag.
292 FOLDER is the elmo folder structure.
293 NUMBER is the message number."
295 (elmo-global-flag-set flag folder number message-id)))
297 (defun elmo-local-flag-p (flag)
298 "Return non-nil when flag is not appropriate for global flag."
299 (memq flag elmo-local-flags))
301 (defsubst elmo-global-flag-set-internal (flag folder number message-id)
302 (when (elmo-local-flag-p flag)
303 (error "Cannot treat `%s' as global flag" flag))
305 (let ((flag-folder (elmo-flag-get-folder flag))
306 cache new-file new-number elem)
307 (if (setq elem (elmo-get-hash-val
309 (elmo-flag-folder-minfo-hash-internal
311 ;; Same ID already exists.
312 (when (and folder number
313 (not (member (cons (elmo-folder-name-internal folder)
314 number) (car elem))))
316 (cons (cons (elmo-folder-name-internal folder)
318 (setq new-number (nth 2 elem))
319 (elmo-set-hash-val (concat (number-to-string number)
320 ":" (elmo-folder-name-internal
323 (elmo-flag-folder-minfo-hash-internal
325 ;; Append new element.
326 (elmo-flag-folder-set-max-number-internal
328 (+ (or (elmo-flag-folder-max-number-internal flag-folder)
329 ;; This is the first time.
330 (car (elmo-folder-status flag-folder)))
336 (elmo-flag-folder-max-number-internal flag-folder)))
337 (elmo-localdir-folder-directory-internal flag-folder)))
339 (setq cache (and message-id (elmo-file-cache-get message-id)))
340 (if (and cache (eq (elmo-file-cache-status cache) 'entire))
341 (elmo-copy-file (elmo-file-cache-path cache)
343 (when (and folder number)
344 (elmo-message-fetch folder number
345 (elmo-make-fetch-strategy 'entire))
346 (write-region-as-binary (point-min) (point-max) new-file nil
348 (elmo-flag-folder-set-minfo-internal
352 (when (and folder number)
353 (list (cons (elmo-folder-name-internal folder)
357 (elmo-flag-folder-minfo-internal flag-folder)))
358 (when (and folder number)
359 (elmo-set-hash-val (concat (number-to-string number)
360 ":" (elmo-folder-name-internal
363 (elmo-flag-folder-minfo-hash-internal
365 (elmo-set-hash-val message-id elem
366 (elmo-flag-folder-minfo-hash-internal
368 (elmo-set-hash-val (concat "#" (number-to-string new-number)) elem
369 (elmo-flag-folder-minfo-hash-internal
371 (elmo-folder-commit flag-folder)
374 (defun elmo-global-flag-set (flag folder number message-id)
375 "Set global flag to the message.
376 FLAG is a symbol of the flag.
377 FOLDER is the elmo folder structure.
378 NUMBER is the message number.
379 MESSAGE-ID is the message-id of the message."
380 (when (elmo-global-flag-p flag)
381 (elmo-global-flag-set-internal flag folder number message-id)))
383 (defun elmo-global-flag-detach (flag folder number &optional delete-if-none)
384 "Detach the message from the global flag.
385 FOLDER is the folder structure.
386 NUMBERS is the message number.
387 If optional DELETE-IF-NONE is non-nil, delete message from flag folder when
388 the message is not flagged in any folder.
389 If DELETE-IF-NONE is a symbol `always',
390 delete message without flagged in other folder."
391 (unless (and (eq (elmo-folder-type-internal folder) 'flag)
392 (eq (elmo-flag-folder-flag-internal folder) flag))
393 (let ((flag-folder (elmo-flag-get-folder flag))
396 (setq key (concat (number-to-string number) ":"
397 (elmo-folder-name-internal folder))
398 elem (elmo-get-hash-val
400 (elmo-flag-folder-minfo-hash-internal flag-folder)))
402 (setcar elem (delete (cons (elmo-folder-name-internal folder)
404 (elmo-clear-hash-val key (elmo-flag-folder-minfo-hash-internal
406 ;; Does not have any referrer, remove.
407 (when (and delete-if-none
408 (or (eq delete-if-none 'always)
410 (elmo-flag-folder-delete-message flag-folder (nth 2 elem)
412 (elmo-localdir-delete-message flag-folder (nth 2 elem))
413 (elmo-folder-commit flag-folder)))))))
415 (defun elmo-global-flag-detach-messages (folder numbers &optional
417 "Detach all messages specified from all global flags.
418 FOLDER is the folder structure.
419 NUMBERS is the message number list.
420 If optional DELETE-IF-NONE is non-nil, delete message from flag folder when
421 the message is not flagged in any folder."
422 (unless (eq (elmo-folder-type-internal folder) 'flag)
423 (dolist (flag elmo-global-flags)
424 (dolist (number numbers)
425 (elmo-global-flag-detach flag folder number delete-if-none)))))
427 (defun elmo-get-global-flags (&optional flags ignore-preserved)
429 Return value is a subset of optional argument FLAGS.
430 If FLAGS is `t', all global flags becomes candidates.
431 If optional IGNORE-PRESERVED is non-nil, preserved flags
432 \(answered, cached, new, unread\) are not included."
433 (let ((result (copy-sequence (if (eq flags t)
434 (setq flags elmo-global-flags)
437 (unless (elmo-global-flag-p (car flags))
438 (setq result (delq (car flags) result)))
439 (setq flags (cdr flags)))
440 (when ignore-preserved
441 (dolist (flag elmo-preserved-flags)
442 (setq result (delq flag result))))
445 (defun elmo-global-flags-initialize (&optional additional-flags)
446 (let ((dir (expand-file-name "flag" elmo-msgdb-directory)))
447 (setq elmo-global-flags
454 (and (file-directory-p dir)
456 (intern (elmo-recover-string-from-filename x)))
459 (directory-files dir))))))
462 ;;; To migrate from global mark folder
463 (defvar elmo-global-mark-filename "global-mark"
464 "Obsolete variable. (Just for migration)")
466 (defun elmo-global-mark-migrate ()
467 "Migrate from 'mark to 'flag. For automatic migration."
468 (when (and (file-exists-p (expand-file-name elmo-global-mark-filename
469 elmo-msgdb-directory))
470 (elmo-global-flag-p 'important)
471 (not (file-exists-p (elmo-folder-msgdb-path
472 (elmo-flag-get-folder 'important)))))
473 (elmo-global-mark-upgrade)))
475 (defun elmo-global-mark-upgrade ()
476 "Upgrade old `global-mark' structure."
478 (when (file-exists-p (expand-file-name
479 elmo-global-mark-filename elmo-msgdb-directory))
480 (message "Upgrading flag structure...")
481 (when (elmo-global-flag-p 'important)
485 elmo-global-mark-filename elmo-msgdb-directory)))
486 (folder (elmo-flag-get-folder 'important))
488 (dolist (elem global-marks)
489 (setq file-cache (elmo-file-cache-get (car elem)))
490 (when (eq (elmo-file-cache-status file-cache) 'entire)
491 (elmo-global-flag-set 'important nil nil (car elem))))))
492 (message "Upgrading flag structure...done")))
494 (luna-define-method elmo-folder-delete :around ((folder elmo-flag-folder))
495 (let ((flag (elmo-flag-folder-flag-internal folder)))
496 (when (luna-call-next-method)
497 (setq elmo-global-flags (delq flag elmo-global-flags))
498 (setq elmo-global-flag-folder-alist
499 (delq (assq flag elmo-global-flag-folder-alist)
500 elmo-global-flag-folder-alist))
504 (product-provide (provide 'elmo-flag) (require 'elmo-version))
506 ;;; elmo-flag.el ends here