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-generic elmo-map-folder-delete-messages (folder locations)
93 (luna-define-method elmo-folder-status ((folder elmo-map-folder))
94 (elmo-folder-open-internal folder)
96 (let ((numbers (mapcar
98 (elmo-map-folder-location-alist-internal folder))))
99 (cons (elmo-max-of-list numbers)
102 (elmo-folder-close-internal folder)))
104 (defun elmo-map-message-number (folder location)
105 "Return number of the message in the FOLDER with LOCATION."
106 (car (elmo-get-hash-val
108 (elmo-map-folder-location-hash-internal folder))))
110 (defun elmo-map-message-location (folder number)
111 "Return location of the message in the FOLDER with NUMBER."
112 (cdr (elmo-get-hash-val
113 (concat "#" (int-to-string number))
114 (elmo-map-folder-location-hash-internal folder))))
116 (luna-define-method elmo-folder-pack-number ((folder elmo-map-folder))
117 (let* ((msgdb (elmo-folder-msgdb-internal folder))
118 (old-number-alist (elmo-msgdb-get-number-alist msgdb))
119 (old-overview (elmo-msgdb-get-overview msgdb))
120 (old-mark-alist (elmo-msgdb-get-mark-alist msgdb))
121 (old-location (elmo-map-folder-location-alist-internal folder))
122 old-number overview number-alist mark-alist location
124 (setq overview old-overview)
127 (elmo-msgdb-overview-entity-get-number (car old-overview)))
128 (elmo-msgdb-overview-entity-set-number (car old-overview) number)
130 (cons (cons number (cdr (assq old-number old-number-alist)))
132 (when (setq mark (cadr (assq old-number old-mark-alist)))
134 (elmo-msgdb-mark-append
135 mark-alist number mark)))
138 (elmo-map-message-location folder old-number))
140 (setq number (1+ number))
141 (setq old-overview (cdr old-overview)))
142 (elmo-map-folder-location-setup folder (nreverse location))
143 (elmo-folder-set-msgdb-internal
146 (nreverse number-alist)
147 (nreverse mark-alist)
148 (elmo-msgdb-make-overview-hashtb overview)))))
150 (defun elmo-map-folder-location-setup (folder locations)
151 (elmo-map-folder-set-location-alist-internal
154 (elmo-map-folder-set-location-hash-internal
155 folder (elmo-make-hash
156 (* 2 (length locations))))
157 (elmo-map-folder-set-number-max-internal folder 0)
158 ;; Set number-max and hashtables.
159 (dolist (location-cons locations)
160 (if (< (elmo-map-folder-number-max-internal folder)
162 (elmo-map-folder-set-number-max-internal folder (car location-cons)))
163 (elmo-set-hash-val (cdr location-cons)
165 (elmo-map-folder-location-hash-internal folder))
166 (elmo-set-hash-val (concat "#" (int-to-string (car location-cons)))
168 (elmo-map-folder-location-hash-internal folder))))
170 (defun elmo-map-folder-update-locations (folder locations)
171 ;; A subroutine to make location-alist.
172 ;; location-alist is existing location-alist.
173 ;; locations is the newest locations.
174 (let* ((location-alist (elmo-map-folder-location-alist-internal folder))
175 (locations-in-db (mapcar 'cdr location-alist))
176 new-locs new-alist deleted-locs pair i)
178 (elmo-delete-if (function
179 (lambda (x) (member x locations-in-db)))
182 (elmo-delete-if (function
183 (lambda (x) (member x locations)))
185 (dolist (location deleted-locs)
190 (elmo-map-folder-location-hash-internal
193 (elmo-clear-hash-val (concat "#" (int-to-string (car pair)))
194 (elmo-map-folder-location-hash-internal
196 (elmo-clear-hash-val location
197 (elmo-map-folder-location-hash-internal
199 (setq i (elmo-map-folder-number-max-internal folder))
200 (dolist (location new-locs)
202 (elmo-map-folder-set-number-max-internal folder i)
203 (setq new-alist (cons (setq pair (cons i location)) new-alist))
204 (setq new-alist (nreverse new-alist))
205 (elmo-set-hash-val (concat "#" (int-to-string i))
207 (elmo-map-folder-location-hash-internal
209 (elmo-set-hash-val location
211 (elmo-map-folder-location-hash-internal
213 (setq location-alist (nconc location-alist new-alist))
214 (elmo-map-folder-set-location-alist-internal folder location-alist)))
216 (luna-define-method elmo-folder-open-internal ((folder elmo-map-folder))
217 (elmo-map-folder-location-setup
219 (elmo-msgdb-location-load (elmo-folder-msgdb-path folder)))
220 (elmo-map-folder-update-locations
222 (elmo-map-folder-list-message-locations folder)))
224 (luna-define-method elmo-folder-commit :after ((folder elmo-map-folder))
225 (when (elmo-folder-persistent-p folder)
226 (elmo-msgdb-location-save (elmo-folder-msgdb-path folder)
227 (elmo-map-folder-location-alist-internal
230 (luna-define-method elmo-folder-close-internal ((folder elmo-map-folder))
231 (elmo-map-folder-set-location-alist-internal folder nil)
232 (elmo-map-folder-set-location-hash-internal folder nil))
234 (luna-define-method elmo-folder-check ((folder elmo-map-folder))
235 (elmo-map-folder-update-locations
237 (elmo-map-folder-list-message-locations folder)))
239 (luna-define-method elmo-folder-list-messages-internal
240 ((folder elmo-map-folder) &optional nohide)
241 (mapcar 'car (elmo-map-folder-location-alist-internal folder)))
243 (luna-define-method elmo-folder-unmark-important ((folder elmo-map-folder)
245 (elmo-map-folder-unmark-important
247 (elmo-map-folder-numbers-to-locations folder numbers)))
249 (luna-define-method elmo-folder-mark-as-important ((folder elmo-map-folder)
251 (elmo-map-folder-mark-as-important
253 (elmo-map-folder-numbers-to-locations folder numbers)))
255 (luna-define-method elmo-folder-unmark-read ((folder elmo-map-folder)
257 (elmo-map-folder-unmark-read
259 (elmo-map-folder-numbers-to-locations folder numbers)))
261 (luna-define-method elmo-folder-mark-as-read ((folder elmo-map-folder) numbers)
262 (elmo-map-folder-mark-as-read
264 (elmo-map-folder-numbers-to-locations folder numbers)))
266 (luna-define-method elmo-message-fetch ((folder elmo-map-folder) number
267 strategy section outbuf unread)
268 (elmo-map-message-fetch
270 (elmo-map-message-location folder number)
271 strategy section outbuf unread))
273 (luna-define-method elmo-folder-list-unreads-internal
274 ((folder elmo-map-folder) unread-marks &optional mark-alist)
275 (elmo-map-folder-locations-to-numbers
277 (elmo-map-folder-list-unreads folder)))
279 (luna-define-method elmo-folder-list-importants-internal
280 ((folder elmo-map-folder) important-mark)
281 (elmo-map-folder-locations-to-numbers
283 (elmo-map-folder-list-importants folder)))
285 (luna-define-method elmo-folder-delete-messages ((folder elmo-map-folder)
287 (elmo-map-folder-delete-messages
289 (elmo-map-folder-numbers-to-locations folder numbers))
290 (dolist (number numbers)
291 (elmo-map-folder-set-location-alist-internal
293 (delq (elmo-get-hash-val
294 (concat "#" (int-to-string number))
295 (elmo-map-folder-location-hash-internal
297 (elmo-map-folder-location-alist-internal folder))))
302 (product-provide (provide 'elmo-map) (require 'elmo-version))
304 ;;; elmo-map.el ends here