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-flag-list '(important)
34 "A list of flag symbol which is managed globally by the flag folder."
35 :type '(repeat symbol)
38 (defvar elmo-global-flag-folder-alist nil
39 "Internal variable to hold global-flag-folder structures.")
42 (luna-define-class elmo-flag-folder (elmo-localdir-folder)
43 (flag minfo minfo-hash))
44 (luna-define-internal-accessors 'elmo-flag-folder))
46 (luna-define-method elmo-folder-initialize ((folder
49 (if (string-match "flag/\\([a-z]+\\)" name)
50 (setq name (match-string 1 name))
51 (setq name (symbol-name (car elmo-global-flag-list))))
52 (or (cdr (assq (intern name) elmo-global-flag-folder-alist))
54 (elmo-flag-folder-set-flag-internal folder (intern name))
55 ;; must be AFTER set flag slot.
56 (setq msgdb-path (elmo-folder-msgdb-path folder))
57 (unless (file-directory-p msgdb-path)
58 (elmo-make-directory msgdb-path))
59 (elmo-localdir-folder-set-dir-name-internal
62 (elmo-localdir-folder-set-directory-internal
65 (if (file-exists-p (expand-file-name ".minfo" msgdb-path))
66 (elmo-flag-folder-set-minfo-internal
68 (elmo-object-load (expand-file-name ".minfo" msgdb-path))))
69 (elmo-flag-folder-set-minfo-hash-internal
71 (elmo-make-hash (length (elmo-flag-folder-minfo-internal folder))))
72 (dolist (elem (elmo-flag-folder-minfo-internal folder))
73 (elmo-set-hash-val (nth 1 elem) elem
74 (elmo-flag-folder-minfo-hash-internal folder))
75 (elmo-set-hash-val (concat "#" (number-to-string (nth 2 elem)))
77 (elmo-flag-folder-minfo-hash-internal folder))
78 (dolist (pair (car elem))
79 (elmo-set-hash-val (concat (number-to-string (cdr pair))
82 (elmo-flag-folder-minfo-hash-internal folder))))
83 (setq elmo-global-flag-folder-alist
84 (cons (cons (intern name) folder) elmo-global-flag-folder-alist))
87 (luna-define-method elmo-folder-expand-msgdb-path ((folder elmo-flag-folder))
88 (expand-file-name (concat "flag/"
90 (elmo-flag-folder-flag-internal folder)))
91 elmo-msgdb-directory))
93 (luna-define-method elmo-folder-commit :after ((folder
96 (expand-file-name ".minfo" (elmo-folder-msgdb-path folder))
97 (elmo-flag-folder-minfo-internal folder)))
99 (defun elmo-flag-folder-delete-message (folder number
100 &optional keep-referrer)
101 (let* ((elem (elmo-get-hash-val (concat "#" (number-to-string number))
102 (elmo-flag-folder-minfo-hash-internal
105 (dolist (pair (car elem))
106 (when (and (car pair) (cdr pair))
107 (unless keep-referrer
108 (setq target-folder (elmo-make-folder (car pair)))
109 (elmo-folder-open target-folder 'load-msgdb)
110 ;; Unset the flag of the original folder.
111 ;; (XXX Should the message-id checked?)
112 (elmo-message-unset-flag target-folder (cdr pair)
113 (elmo-flag-folder-flag-internal folder))
114 (elmo-folder-close target-folder))
115 (elmo-clear-hash-val (concat (number-to-string (cdr pair)) ":"
117 (elmo-flag-folder-minfo-hash-internal
119 (elmo-clear-hash-val (concat "#" (number-to-string number))
120 (elmo-flag-folder-minfo-hash-internal
122 (elmo-clear-hash-val (nth 1 elem) (elmo-flag-folder-minfo-hash-internal
124 (elmo-flag-folder-set-minfo-internal
126 (delq elem (elmo-flag-folder-minfo-internal folder))))
129 (luna-define-method elmo-folder-delete-messages ((folder
132 (dolist (number numbers)
133 (elmo-flag-folder-delete-message folder number)
134 (elmo-localdir-delete-message folder number))
135 (elmo-folder-commit folder)
138 ;; Same as localdir except that the flag is always the flag.
139 (luna-define-method elmo-folder-msgdb-create ((folder elmo-flag-folder)
143 (let ((dir (elmo-localdir-folder-directory-internal folder))
144 (new-msgdb (elmo-make-msgdb))
146 (len (length numbers)))
147 (message "Creating msgdb...")
149 (when (setq entity (elmo-localdir-msgdb-create-entity
151 (elmo-msgdb-append-entity new-msgdb entity
152 (list (elmo-flag-folder-flag-internal
154 (when (> len elmo-display-progress-threshold)
156 (elmo-display-progress
157 'elmo-flag-folder-msgdb-create "Creating msgdb..."
159 (setq numbers (cdr numbers)))
160 (message "Creating msgdb...done")
163 (luna-define-method elmo-folder-append-messages ((folder elmo-flag-folder)
166 &optional same-number)
167 (dolist (number numbers)
168 (elmo-global-flag-set (elmo-flag-folder-flag-internal folder)
169 src-folder number (elmo-message-field
175 (luna-define-method elmo-folder-append-buffer ((folder elmo-flag-folder)
178 (error "Cannot append to the flag folder"))
182 (defmacro elmo-flag-get-folder (flag)
183 "Get the flag folder structure for FLAG."
184 `(when (memq ,flag elmo-global-flag-list)
185 (elmo-make-folder (concat "'flag/" (symbol-name ,flag)))))
187 (defun elmo-flag-folder-referrer (folder number)
188 "Return a list of referrer message information.
189 Each element is a cons cell like following:
191 FNAME is the name of the folder which the message is contained.
192 NUMBER is the number of the message."
193 (when (eq (elmo-folder-type-internal folder) 'flag)
194 (car (elmo-get-hash-val (concat "#" (number-to-string number))
195 (elmo-flag-folder-minfo-hash-internal
199 (defun elmo-global-flag-initialize ()
200 "Initialize flag folders.
201 This function is necessary to be called before using `elmo-flag-folder'."
202 (unless elmo-global-flag-folder-alist
203 (dolist (flag elmo-global-flag-list)
204 (setq elmo-global-flag-folder-alist
205 (cons (elmo-make-folder
206 (concat "'flag/" (symbol-name flag)))
207 elmo-global-flag-folder-alist)))))
209 (defun elmo-global-flag-p (flag)
210 "Return non-nil when FLAG is global."
211 (memq flag elmo-global-flag-list))
213 (defun elmo-global-flags (fname number)
214 "Return a list of global flags for the message.
215 FNAME is the name string of the folder.
216 NUMBER is the number of the message."
217 (let ((flag-list elmo-global-flag-list)
220 (setq folder (elmo-flag-get-folder (car flag-list)))
221 (when (elmo-get-hash-val
222 (concat (number-to-string number) ":" fname)
223 (elmo-flag-folder-minfo-hash-internal folder))
224 (setq matches (cons (elmo-flag-folder-flag-internal folder)
226 (setq flag-list (cdr flag-list)))
229 (defun elmo-folder-list-global-flag-messages (folder flag)
230 "List messages which have global flag.
231 FOLDER is the elmo folder structure.
232 FLAG is the symbol of the flag."
233 (when (elmo-global-flag-p flag)
234 (let ((flag-folder (elmo-flag-get-folder flag))
236 (dolist (elem (elmo-flag-folder-minfo-internal flag-folder))
237 (if (setq entity (elmo-message-entity folder (nth 1 elem)))
238 (setq result (cons (elmo-message-entity-number entity)
243 ;; minfo is a list of following cell.
244 ;; ((((FNAME . NUMBER)...(FNAME . NUMBER)) MESSAGE-ID NUMBER-IN-FLAG-FOLDER)
245 ;; minfo-index is the hash table of above with following indice;
246 (defun elmo-global-flags-set (flags folder number message-id)
247 "Set global flags to the message.
248 FLAGS is a list of symbol of the flag.
249 FOLDER is the elmo folder structure.
250 NUMBER is the message number."
252 (elmo-global-flag-set flag folder number message-id)))
254 (defsubst elmo-global-flag-set-internal (flag folder number message-id)
256 (let ((flag-folder (elmo-flag-get-folder flag))
257 cache new-file new-number elem)
258 (if (setq elem (elmo-get-hash-val
260 (elmo-flag-folder-minfo-hash-internal
262 ;; Same ID already exists.
263 (when (and folder number
264 (not (member (cons (elmo-folder-name-internal folder)
265 number) (car elem))))
267 (cons (cons (elmo-folder-name-internal folder)
269 (setq new-number (nth 2 elem))
270 (elmo-set-hash-val (concat (number-to-string number)
271 ":" (elmo-folder-name-internal
274 (elmo-flag-folder-minfo-hash-internal
276 ;; Append new element.
280 (setq new-number (1+ (car (elmo-folder-status flag-folder)))))
281 (elmo-localdir-folder-directory-internal flag-folder)))
283 (setq cache (and message-id (elmo-file-cache-get message-id)))
284 (if (and cache (eq (elmo-file-cache-status cache) 'entire))
285 (elmo-copy-file (elmo-file-cache-path cache)
287 (when (and folder number)
288 (elmo-message-fetch folder number (elmo-make-fetch-strategy
290 nil (current-buffer))
291 (write-region-as-binary (point-min) (point-max) new-file nil
293 (elmo-flag-folder-set-minfo-internal
297 (when (and folder number)
298 (list (cons (elmo-folder-name-internal folder)
302 (elmo-flag-folder-minfo-internal flag-folder)))
303 (when (and folder number)
304 (elmo-set-hash-val (concat (number-to-string number)
305 ":" (elmo-folder-name-internal
308 (elmo-flag-folder-minfo-hash-internal
310 (elmo-set-hash-val message-id elem
311 (elmo-flag-folder-minfo-hash-internal
313 (elmo-set-hash-val (concat "#" (number-to-string new-number)) elem
314 (elmo-flag-folder-minfo-hash-internal
316 (elmo-folder-commit flag-folder)
319 (defun elmo-global-flag-set (flag folder number message-id)
320 "Set global flag to the message.
321 FLAG is a symbol of the flag.
322 FOLDER is the elmo folder structure.
323 NUMBER is the message number.
324 MESSAGE-ID is the message-id of the message."
325 (when (elmo-global-flag-p flag)
326 (elmo-global-flag-set-internal flag folder number message-id)))
328 (defun elmo-global-flag-detach (flag folder number &optional delete-if-none)
329 "Detach the message from the global flag.
330 FOLDER is the folder structure.
331 NUMBERS is the message number.
332 If optional DELETE-IF-NONE is non-nil, delete message from flag folder when
333 the message is not flagged in any folder."
334 (unless (eq (elmo-folder-type-internal folder) 'flag)
335 (let ((flag-folder (elmo-flag-get-folder flag))
338 (setq key (concat (number-to-string number) ":"
339 (elmo-folder-name-internal folder))
340 elem (elmo-get-hash-val
342 (elmo-flag-folder-minfo-hash-internal flag-folder)))
344 (setcar elem (delete (cons (elmo-folder-name-internal folder)
346 (elmo-clear-hash-val key (elmo-flag-folder-minfo-hash-internal
348 ;; Does not have any referrer, remove.
349 (when (and delete-if-none (null (car elem)))
350 (elmo-flag-folder-delete-message flag-folder (nth 2 elem) 'keep)
351 (elmo-localdir-delete-message flag-folder (nth 2 elem))
352 (elmo-folder-commit flag-folder)))))))
354 (defun elmo-global-flag-detach-messages (folder numbers &optional
356 "Detach all messages specified from all global flags.
357 FOLDER is the folder structure.
358 NUMBERS is the message number list.
359 If optional DELETE-IF-NONE is non-nil, delete message from flag folder when
360 the message is not flagged in any folder."
361 (unless (eq (elmo-folder-type-internal folder) 'flag)
362 (dolist (flag elmo-global-flag-list)
363 (dolist (number numbers)
364 (elmo-global-flag-detach flag folder number delete-if-none)))))
366 ;;; To migrate from global mark folder
367 (defvar elmo-global-mark-filename "global-mark"
368 "Obsolete variable. (Just for migration)")
370 (defun elmo-global-mark-upgrade ()
371 "Upgrade old `global-mark' structure."
373 (when (file-exists-p (expand-file-name
374 elmo-global-mark-filename elmo-msgdb-directory))
375 (message "Upgrading flag structure...")
376 (elmo-global-flag-initialize)
377 (when (elmo-global-flag-p 'important)
381 elmo-global-mark-filename elmo-msgdb-directory)))
382 (folder (elmo-flag-get-folder 'important))
384 (dolist (elem global-marks)
385 (setq file-cache (elmo-file-cache-get (car elem)))
386 (when (eq (elmo-file-cache-status file-cache) 'entire)
387 (elmo-global-flag-set 'important nil nil (car elem))))))
388 (message "Upgrading flag structure...done")))
391 (product-provide (provide 'elmo-flag) (require 'elmo-version))
393 ;;; elmo-flag.el ends here