1 ;;; elmo-map.el --- A ELMO folder class with message number mapping.
3 ;; Copyright (C) 2000 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.
27 ;; Folders which do not have unique message numbers but unique message names
28 ;; should inherit this folder.
35 (eval-when-compile (require 'cl))
38 ;; location-hash: location->number mapping
39 ;; number-hash: number->location mapping
40 (luna-define-class elmo-map-folder (elmo-folder)
41 (location-alist number-max location-hash))
42 (luna-define-internal-accessors 'elmo-map-folder))
44 (defun elmo-map-folder-numbers-to-locations (folder numbers)
46 (dolist (number numbers)
47 (if (setq pair (elmo-get-hash-val
48 (concat "#" (int-to-string number))
49 (elmo-map-folder-location-hash-internal folder)))
50 (setq locations (cons (cdr pair) locations))))
51 (nreverse locations)))
53 (defun elmo-map-folder-locations-to-numbers (folder locations)
55 (dolist (location locations)
56 (if (setq pair (elmo-get-hash-val
58 (elmo-map-folder-location-hash-internal folder)))
59 (setq numbers (cons (car pair) numbers))))
62 (luna-define-generic elmo-map-folder-list-message-locations (folder)
63 "Return a location list of the FOLDER.")
65 (luna-define-generic elmo-map-folder-unmark-important (folder locations)
68 (luna-define-generic elmo-map-folder-mark-as-important (folder locations)
71 (luna-define-generic elmo-map-folder-unmark-read (folder locations)
74 (luna-define-generic elmo-map-folder-mark-as-read (folder locations)
77 (luna-define-generic elmo-map-message-fetch (folder location
84 (luna-define-generic elmo-map-folder-list-unreads (folder)
87 (luna-define-generic elmo-map-folder-list-importants (folder)
90 (luna-define-method elmo-map-folder-list-importants ((folder elmo-map-folder))
93 (luna-define-generic elmo-map-folder-delete-messages (folder locations)
96 (luna-define-method elmo-folder-status ((folder elmo-map-folder))
97 (elmo-folder-open-internal folder)
98 (elmo-folder-set-killed-list-internal
100 (elmo-msgdb-killed-list-load (elmo-folder-msgdb-path folder)))
101 (let ((numbers (mapcar
103 (elmo-map-folder-location-alist-internal folder))))
104 (setq numbers (elmo-living-messages numbers (elmo-folder-killed-list-internal folder)))
106 (cons (elmo-max-of-list numbers)
108 ;; Don't close after status.
109 (unless (elmo-folder-reserve-status-p folder)
110 (elmo-folder-close-internal folder)))))
112 (defun elmo-map-message-number (folder location)
113 "Return number of the message in the FOLDER with LOCATION."
114 (car (elmo-get-hash-val
116 (elmo-map-folder-location-hash-internal folder))))
118 (defun elmo-map-message-location (folder number)
119 "Return location of the message in the FOLDER with NUMBER."
120 (cdr (elmo-get-hash-val
121 (concat "#" (int-to-string number))
122 (elmo-map-folder-location-hash-internal folder))))
124 (luna-define-method elmo-folder-pack-number ((folder elmo-map-folder))
125 (let* ((msgdb (elmo-folder-msgdb folder))
126 (old-number-alist (elmo-msgdb-get-number-alist msgdb))
127 (old-overview (elmo-msgdb-get-overview msgdb))
128 (old-mark-alist (elmo-msgdb-get-mark-alist msgdb))
129 (old-location (elmo-map-folder-location-alist-internal folder))
130 old-number overview number-alist mark-alist location
132 (setq overview old-overview)
135 (elmo-msgdb-overview-entity-get-number (car old-overview)))
136 (elmo-msgdb-overview-entity-set-number (car old-overview) number)
138 (cons (cons number (cdr (assq old-number old-number-alist)))
140 (when (setq mark (cadr (assq old-number old-mark-alist)))
142 (elmo-msgdb-mark-append
143 mark-alist number mark)))
146 (elmo-map-message-location folder old-number))
148 (setq number (1+ number))
149 (setq old-overview (cdr old-overview)))
150 (elmo-map-folder-location-setup folder (nreverse location))
151 (elmo-folder-set-msgdb-internal
154 (nreverse number-alist)
155 (nreverse mark-alist)
156 (elmo-msgdb-make-overview-hashtb overview)))))
158 (defun elmo-map-folder-location-setup (folder locations)
159 (elmo-map-folder-set-location-alist-internal
162 (elmo-map-folder-set-location-hash-internal
163 folder (elmo-make-hash
164 (* 2 (length locations))))
165 (elmo-map-folder-set-number-max-internal folder 0)
166 ;; Set number-max and hashtables.
167 (dolist (location-cons locations)
168 (if (< (elmo-map-folder-number-max-internal folder)
170 (elmo-map-folder-set-number-max-internal folder (car location-cons)))
171 (elmo-set-hash-val (cdr location-cons)
173 (elmo-map-folder-location-hash-internal folder))
174 (elmo-set-hash-val (concat "#" (int-to-string (car location-cons)))
176 (elmo-map-folder-location-hash-internal folder))))
178 (defun elmo-map-folder-update-locations (folder locations)
179 ;; A subroutine to make location-alist.
180 ;; location-alist is existing location-alist.
181 ;; locations is the newest locations.
182 (let* ((location-alist (elmo-map-folder-location-alist-internal folder))
183 (locations-in-db (mapcar 'cdr location-alist))
184 new-locs new-alist deleted-locs pair i)
186 (elmo-delete-if (function
187 (lambda (x) (member x locations-in-db)))
190 (elmo-delete-if (function
191 (lambda (x) (member x locations)))
193 (dolist (location deleted-locs)
198 (elmo-map-folder-location-hash-internal
202 (elmo-clear-hash-val (concat "#" (int-to-string (car pair)))
203 (elmo-map-folder-location-hash-internal
205 (elmo-clear-hash-val location
206 (elmo-map-folder-location-hash-internal
208 (setq i (elmo-map-folder-number-max-internal folder))
209 (dolist (location new-locs)
211 (elmo-map-folder-set-number-max-internal folder i)
212 (setq new-alist (cons (setq pair (cons i location)) new-alist))
213 (setq new-alist (nreverse new-alist))
214 (elmo-set-hash-val (concat "#" (int-to-string i))
216 (elmo-map-folder-location-hash-internal
218 (elmo-set-hash-val location
220 (elmo-map-folder-location-hash-internal
223 (sort (nconc location-alist new-alist)
224 (lambda (x y) (< (car x) (car y)))))
225 (elmo-map-folder-set-location-alist-internal folder location-alist)))
227 (luna-define-method elmo-folder-open-internal ((folder elmo-map-folder))
228 (elmo-map-folder-location-setup
230 (elmo-msgdb-location-load (elmo-folder-msgdb-path folder)))
231 (if (elmo-folder-plugged-p folder)
232 (elmo-map-folder-update-locations
234 (elmo-map-folder-list-message-locations folder))))
236 (luna-define-method elmo-folder-commit :after ((folder elmo-map-folder))
237 (when (elmo-folder-persistent-p folder)
238 (elmo-msgdb-location-save (elmo-folder-msgdb-path folder)
239 (elmo-map-folder-location-alist-internal
242 (luna-define-method elmo-folder-close-internal ((folder elmo-map-folder))
243 (elmo-map-folder-set-location-alist-internal folder nil)
244 (elmo-map-folder-set-location-hash-internal folder nil))
246 (luna-define-method elmo-folder-check ((folder elmo-map-folder))
247 (elmo-map-folder-update-locations
249 (elmo-map-folder-list-message-locations folder)))
251 (luna-define-method elmo-folder-clear :around ((folder elmo-map-folder)
252 &optional keep-killed)
254 (elmo-map-folder-set-number-max-internal folder 0)
255 (elmo-map-folder-set-location-alist-internal folder nil)
257 (elmo-map-folder-set-location-hash-internal folder (elmo-make-hash)))
258 (luna-call-next-method))
260 (luna-define-method elmo-folder-list-messages-internal
261 ((folder elmo-map-folder) &optional nohide)
262 (mapcar 'car (elmo-map-folder-location-alist-internal folder)))
264 (luna-define-method elmo-folder-unmark-important ((folder elmo-map-folder)
266 (elmo-map-folder-unmark-important
268 (elmo-map-folder-numbers-to-locations folder numbers)))
270 (luna-define-method elmo-folder-mark-as-important ((folder elmo-map-folder)
272 (elmo-map-folder-mark-as-important
274 (elmo-map-folder-numbers-to-locations folder numbers)))
276 (luna-define-method elmo-folder-unmark-read ((folder elmo-map-folder)
278 (elmo-map-folder-unmark-read
280 (elmo-map-folder-numbers-to-locations folder numbers)))
282 (luna-define-method elmo-folder-mark-as-read ((folder elmo-map-folder) numbers)
283 (elmo-map-folder-mark-as-read
285 (elmo-map-folder-numbers-to-locations folder numbers)))
287 (luna-define-method elmo-message-fetch-internal ((folder elmo-map-folder)
289 &optional section unread)
290 (elmo-map-message-fetch
292 (elmo-map-message-location folder number)
293 strategy section unread))
295 (luna-define-method elmo-folder-list-unreads-internal
296 ((folder elmo-map-folder) unread-marks &optional mark-alist)
297 (elmo-map-folder-locations-to-numbers
299 (elmo-map-folder-list-unreads folder)))
301 (luna-define-method elmo-folder-list-importants-internal
302 ((folder elmo-map-folder) important-mark)
303 (let ((locations (elmo-map-folder-list-importants folder)))
304 (if (listp locations)
305 (elmo-map-folder-locations-to-numbers folder locations)
308 (luna-define-method elmo-folder-delete-messages ((folder elmo-map-folder)
310 (elmo-map-folder-delete-messages
312 (elmo-map-folder-numbers-to-locations folder numbers))
313 (dolist (number numbers)
314 (elmo-map-folder-set-location-alist-internal
316 (delq (elmo-get-hash-val
317 (concat "#" (int-to-string number))
318 (elmo-map-folder-location-hash-internal
320 (elmo-map-folder-location-alist-internal folder))))
325 (product-provide (provide 'elmo-map) (require 'elmo-version))
327 ;;; elmo-map.el ends here