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41487370 | 1 | ;;; nnfolder.el --- mail folder access for Gnus |
231f989b | 2 | ;; Copyright (C) 1995,96 Free Software Foundation, Inc. |
41487370 LMI |
3 | |
4 | ;; Author: Scott Byer <byer@mv.us.adobe.com> | |
5 | ;; Lars Magne Ingebrigtsen <larsi@ifi.uio.no> | |
6 | ;; Masanobu UMEDA <umerin@flab.flab.fujitsu.junet> | |
231f989b | 7 | ;; Keywords: mail |
41487370 LMI |
8 | |
9 | ;; This file is part of GNU Emacs. | |
10 | ||
11 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
12 | ;; it under the terms of the GNU General Public License as published by | |
13 | ;; the Free Software Foundation; either version 2, or (at your option) | |
14 | ;; any later version. | |
15 | ||
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
b578f267 EN |
22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
23 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
24 | ;; Boston, MA 02111-1307, USA. | |
41487370 LMI |
25 | |
26 | ;;; Commentary: | |
27 | ||
28 | ;; For an overview of what the interface functions do, please see the | |
29 | ;; Gnus sources. | |
30 | ||
31 | ;; Various enhancements by byer@mv.us.adobe.com (Scott Byer). | |
32 | ||
33 | ;;; Code: | |
34 | ||
35 | (require 'nnheader) | |
231f989b | 36 | (require 'message) |
41487370 | 37 | (require 'nnmail) |
231f989b LMI |
38 | (require 'nnoo) |
39 | (eval-when-compile (require 'cl)) | |
40 | ||
41 | (nnoo-declare nnfolder) | |
41487370 | 42 | |
231f989b LMI |
43 | (defvoo nnfolder-directory (expand-file-name message-directory) |
44 | "The name of the nnfolder directory.") | |
41487370 | 45 | |
231f989b LMI |
46 | (defvoo nnfolder-active-file |
47 | (nnheader-concat nnfolder-directory "active") | |
41487370 LMI |
48 | "The name of the active file.") |
49 | ||
a7acbbe4 | 50 | ;; I renamed this variable to something more in keeping with the general GNU |
41487370 LMI |
51 | ;; style. -SLB |
52 | ||
231f989b LMI |
53 | (defvoo nnfolder-ignore-active-file nil |
54 | "If non-nil, causes nnfolder to do some extra work in order to determine | |
55 | the true active ranges of an mbox file. Note that the active file is still | |
c139ae75 | 56 | saved, but its values are not used. This costs some extra time when |
231f989b LMI |
57 | scanning an mbox when opening it.") |
58 | ||
59 | (defvoo nnfolder-distrust-mbox nil | |
60 | "If non-nil, causes nnfolder to not trust the user with respect to | |
61 | inserting unaccounted for mail in the middle of an mbox file. This can greatly | |
62 | slow down scans, which now must scan the entire file for unmarked messages. | |
63 | When nil, scans occur forward from the last marked message, a huge | |
64 | time saver for large mailboxes.") | |
65 | ||
66 | (defvoo nnfolder-newsgroups-file | |
67 | (concat (file-name-as-directory nnfolder-directory) "newsgroups") | |
41487370 LMI |
68 | "Mail newsgroups description file.") |
69 | ||
231f989b | 70 | (defvoo nnfolder-get-new-mail t |
41487370 LMI |
71 | "If non-nil, nnfolder will check the incoming mail file and split the mail.") |
72 | ||
231f989b | 73 | (defvoo nnfolder-prepare-save-mail-hook nil |
41487370 LMI |
74 | "Hook run narrowed to an article before saving.") |
75 | ||
231f989b LMI |
76 | (defvoo nnfolder-save-buffer-hook nil |
77 | "Hook run before saving the nnfolder mbox buffer.") | |
78 | ||
79 | (defvoo nnfolder-inhibit-expiry nil | |
80 | "If non-nil, inhibit expiry.") | |
81 | ||
41487370 LMI |
82 | \f |
83 | ||
84 | (defconst nnfolder-version "nnfolder 1.0" | |
85 | "nnfolder version.") | |
86 | ||
87 | (defconst nnfolder-article-marker "X-Gnus-Article-Number: " | |
88 | "String used to demarcate what the article number for a message is.") | |
89 | ||
231f989b LMI |
90 | (defvoo nnfolder-current-group nil) |
91 | (defvoo nnfolder-current-buffer nil) | |
92 | (defvoo nnfolder-status-string "") | |
93 | (defvoo nnfolder-group-alist nil) | |
94 | (defvoo nnfolder-buffer-alist nil) | |
95 | (defvoo nnfolder-scantime-alist nil) | |
41487370 LMI |
96 | |
97 | \f | |
98 | ||
99 | ;;; Interface functions | |
100 | ||
231f989b LMI |
101 | (nnoo-define-basics nnfolder) |
102 | ||
103 | (deffoo nnfolder-retrieve-headers (articles &optional group server fetch-old) | |
41487370 LMI |
104 | (save-excursion |
105 | (set-buffer nntp-server-buffer) | |
106 | (erase-buffer) | |
231f989b | 107 | (let ((delim-string (concat "^" message-unix-mail-delimiter)) |
41487370 | 108 | article art-string start stop) |
231f989b LMI |
109 | (nnfolder-possibly-change-group group server) |
110 | (when nnfolder-current-buffer | |
111 | (set-buffer nnfolder-current-buffer) | |
41487370 | 112 | (goto-char (point-min)) |
231f989b LMI |
113 | (if (stringp (car articles)) |
114 | 'headers | |
115 | (while articles | |
116 | (setq article (car articles)) | |
117 | (setq art-string (nnfolder-article-string article)) | |
118 | (set-buffer nnfolder-current-buffer) | |
119 | (if (or (search-forward art-string nil t) | |
120 | ;; Don't search the whole file twice! Also, articles | |
121 | ;; probably have some locality by number, so searching | |
122 | ;; backwards will be faster. Especially if we're at the | |
123 | ;; beginning of the buffer :-). -SLB | |
124 | (search-backward art-string nil t)) | |
125 | (progn | |
126 | (setq start (or (re-search-backward delim-string nil t) | |
127 | (point))) | |
128 | (search-forward "\n\n" nil t) | |
129 | (setq stop (1- (point))) | |
130 | (set-buffer nntp-server-buffer) | |
131 | (insert (format "221 %d Article retrieved.\n" article)) | |
132 | (insert-buffer-substring nnfolder-current-buffer start stop) | |
133 | (goto-char (point-max)) | |
134 | (insert ".\n"))) | |
135 | (setq articles (cdr articles))) | |
136 | ||
137 | (set-buffer nntp-server-buffer) | |
138 | (nnheader-fold-continuation-lines) | |
139 | 'headers))))) | |
140 | ||
141 | (deffoo nnfolder-open-server (server &optional defs) | |
142 | (nnoo-change-server 'nnfolder server defs) | |
143 | (when (not (file-exists-p nnfolder-directory)) | |
144 | (condition-case () | |
145 | (make-directory nnfolder-directory t) | |
146 | (error t))) | |
147 | (cond | |
148 | ((not (file-exists-p nnfolder-directory)) | |
149 | (nnfolder-close-server) | |
150 | (nnheader-report 'nnfolder "Couldn't create directory: %s" | |
151 | nnfolder-directory)) | |
152 | ((not (file-directory-p (file-truename nnfolder-directory))) | |
153 | (nnfolder-close-server) | |
154 | (nnheader-report 'nnfolder "Not a directory: %s" nnfolder-directory)) | |
155 | (t | |
156 | (nnheader-report 'nnfolder "Opened server %s using directory %s" | |
157 | server nnfolder-directory) | |
158 | t))) | |
159 | ||
160 | (deffoo nnfolder-request-close () | |
41487370 LMI |
161 | (let ((alist nnfolder-buffer-alist)) |
162 | (while alist | |
231f989b | 163 | (nnfolder-close-group (caar alist) nil t) |
41487370 | 164 | (setq alist (cdr alist)))) |
231f989b | 165 | (nnoo-close-server 'nnfolder) |
41487370 LMI |
166 | (setq nnfolder-buffer-alist nil |
167 | nnfolder-group-alist nil)) | |
168 | ||
231f989b LMI |
169 | (deffoo nnfolder-request-article (article &optional group server buffer) |
170 | (nnfolder-possibly-change-group group server) | |
171 | (save-excursion | |
172 | (set-buffer nnfolder-current-buffer) | |
173 | (goto-char (point-min)) | |
174 | (if (search-forward (nnfolder-article-string article) nil t) | |
175 | (let (start stop) | |
176 | (re-search-backward (concat "^" message-unix-mail-delimiter) nil t) | |
177 | (setq start (point)) | |
178 | (forward-line 1) | |
179 | (or (and (re-search-forward | |
180 | (concat "^" message-unix-mail-delimiter) nil t) | |
181 | (forward-line -1)) | |
182 | (goto-char (point-max))) | |
183 | (setq stop (point)) | |
184 | (let ((nntp-server-buffer (or buffer nntp-server-buffer))) | |
185 | (set-buffer nntp-server-buffer) | |
186 | (erase-buffer) | |
187 | (insert-buffer-substring nnfolder-current-buffer start stop) | |
188 | (goto-char (point-min)) | |
189 | (while (looking-at "From ") | |
190 | (delete-char 5) | |
191 | (insert "X-From-Line: ") | |
192 | (forward-line 1)) | |
193 | (if (numberp article) | |
194 | (cons nnfolder-current-group article) | |
41487370 | 195 | (goto-char (point-min)) |
231f989b LMI |
196 | (search-forward (concat "\n" nnfolder-article-marker)) |
197 | (cons nnfolder-current-group | |
198 | (string-to-int | |
199 | (buffer-substring | |
200 | (point) (progn (end-of-line) (point))))))))))) | |
41487370 | 201 | |
231f989b | 202 | (deffoo nnfolder-request-group (group &optional server dont-check) |
41487370 LMI |
203 | (save-excursion |
204 | (nnmail-activate 'nnfolder) | |
231f989b LMI |
205 | (if (not (assoc group nnfolder-group-alist)) |
206 | (nnheader-report 'nnfolder "No such group: %s" group) | |
207 | (nnfolder-possibly-change-group group server) | |
208 | (if dont-check | |
209 | (progn | |
210 | (nnheader-report 'nnfolder "Selected group %s" group) | |
211 | t) | |
212 | (let* ((active (assoc group nnfolder-group-alist)) | |
213 | (group (car active)) | |
214 | (range (cadr active))) | |
215 | (cond | |
216 | ((null active) | |
217 | (nnheader-report 'nnfolder "No such group: %s" group)) | |
218 | ((null nnfolder-current-group) | |
219 | (nnheader-report 'nnfolder "Empty group: %s" group)) | |
220 | (t | |
221 | (nnheader-report 'nnfolder "Selected group %s" group) | |
222 | (nnheader-insert "211 %d %d %d %s\n" | |
223 | (1+ (- (cdr range) (car range))) | |
224 | (car range) (cdr range) group)))))))) | |
225 | ||
226 | (deffoo nnfolder-request-scan (&optional group server) | |
227 | (nnfolder-possibly-change-group group server t) | |
228 | (nnmail-get-new-mail | |
229 | 'nnfolder | |
230 | (lambda () | |
231 | (let ((bufs nnfolder-buffer-alist)) | |
232 | (save-excursion | |
233 | (while bufs | |
234 | (if (not (buffer-name (nth 1 (car bufs)))) | |
235 | (setq nnfolder-buffer-alist | |
236 | (delq (car bufs) nnfolder-buffer-alist)) | |
237 | (set-buffer (nth 1 (car bufs))) | |
238 | (nnfolder-save-buffer) | |
239 | (kill-buffer (current-buffer))) | |
240 | (setq bufs (cdr bufs)))))) | |
241 | nnfolder-directory | |
242 | group)) | |
41487370 LMI |
243 | |
244 | ;; Don't close the buffer if we're not shutting down the server. This way, | |
245 | ;; we can keep the buffer in the group buffer cache, and not have to grovel | |
246 | ;; over the buffer again unless we add new mail to it or modify it in some | |
247 | ;; way. | |
248 | ||
231f989b | 249 | (deffoo nnfolder-close-group (group &optional server force) |
41487370 | 250 | ;; Make sure we _had_ the group open. |
231f989b LMI |
251 | (when (or (assoc group nnfolder-buffer-alist) |
252 | (equal group nnfolder-current-group)) | |
253 | (let ((inf (assoc group nnfolder-buffer-alist))) | |
254 | (when inf | |
255 | (when nnfolder-current-group | |
256 | (push (list nnfolder-current-group nnfolder-current-buffer) | |
257 | nnfolder-buffer-alist)) | |
258 | (setq nnfolder-buffer-alist | |
259 | (delq inf nnfolder-buffer-alist)) | |
260 | (setq nnfolder-current-buffer (cadr inf) | |
261 | nnfolder-current-group (car inf)))) | |
262 | (when (and nnfolder-current-buffer | |
263 | (buffer-name nnfolder-current-buffer)) | |
264 | (save-excursion | |
265 | (set-buffer nnfolder-current-buffer) | |
266 | ;; If the buffer was modified, write the file out now. | |
267 | (nnfolder-save-buffer) | |
268 | ;; If we're shutting the server down, we need to kill the | |
269 | ;; buffer and remove it from the open buffer list. Or, of | |
270 | ;; course, if we're trying to minimize our space impact. | |
271 | (kill-buffer (current-buffer)) | |
272 | (setq nnfolder-buffer-alist (delq (assoc group nnfolder-buffer-alist) | |
273 | nnfolder-buffer-alist))))) | |
41487370 LMI |
274 | (setq nnfolder-current-group nil |
275 | nnfolder-current-buffer nil) | |
276 | t) | |
277 | ||
231f989b LMI |
278 | (deffoo nnfolder-request-create-group (group &optional server) |
279 | (nnfolder-possibly-change-group nil server) | |
41487370 | 280 | (nnmail-activate 'nnfolder) |
231f989b LMI |
281 | (when group |
282 | (unless (assoc group nnfolder-group-alist) | |
283 | (push (list group (cons 1 0)) nnfolder-group-alist) | |
284 | (nnmail-save-active nnfolder-group-alist nnfolder-active-file))) | |
41487370 LMI |
285 | t) |
286 | ||
231f989b LMI |
287 | (deffoo nnfolder-request-list (&optional server) |
288 | (nnfolder-possibly-change-group nil server) | |
41487370 LMI |
289 | (save-excursion |
290 | (nnmail-find-file nnfolder-active-file) | |
291 | (setq nnfolder-group-alist (nnmail-get-active)))) | |
292 | ||
231f989b LMI |
293 | (deffoo nnfolder-request-newgroups (date &optional server) |
294 | (nnfolder-possibly-change-group nil server) | |
41487370 LMI |
295 | (nnfolder-request-list server)) |
296 | ||
231f989b LMI |
297 | (deffoo nnfolder-request-list-newsgroups (&optional server) |
298 | (nnfolder-possibly-change-group nil server) | |
41487370 LMI |
299 | (save-excursion |
300 | (nnmail-find-file nnfolder-newsgroups-file))) | |
301 | ||
231f989b | 302 | (deffoo nnfolder-request-expire-articles |
41487370 | 303 | (articles newsgroup &optional server force) |
231f989b LMI |
304 | (nnfolder-possibly-change-group newsgroup server) |
305 | (let* ((is-old t) | |
41487370 LMI |
306 | rest) |
307 | (nnmail-activate 'nnfolder) | |
308 | ||
309 | (save-excursion | |
310 | (set-buffer nnfolder-current-buffer) | |
311 | (while (and articles is-old) | |
312 | (goto-char (point-min)) | |
313 | (if (search-forward (nnfolder-article-string (car articles)) nil t) | |
231f989b LMI |
314 | (if (setq is-old |
315 | (nnmail-expired-article-p | |
316 | newsgroup | |
317 | (buffer-substring | |
318 | (point) (progn (end-of-line) (point))) | |
319 | force nnfolder-inhibit-expiry)) | |
41487370 | 320 | (progn |
231f989b LMI |
321 | (nnheader-message 5 "Deleting article %d..." |
322 | (car articles) newsgroup) | |
41487370 LMI |
323 | (nnfolder-delete-mail)) |
324 | (setq rest (cons (car articles) rest)))) | |
325 | (setq articles (cdr articles))) | |
231f989b | 326 | (nnfolder-save-buffer) |
41487370 | 327 | ;; Find the lowest active article in this group. |
231f989b | 328 | (let* ((active (cadr (assoc newsgroup nnfolder-group-alist))) |
41487370 LMI |
329 | (marker (concat "\n" nnfolder-article-marker)) |
330 | (number "[0-9]+") | |
331 | (activemin (cdr active))) | |
332 | (goto-char (point-min)) | |
333 | (while (and (search-forward marker nil t) | |
334 | (re-search-forward number nil t)) | |
335 | (setq activemin (min activemin | |
336 | (string-to-number (buffer-substring | |
337 | (match-beginning 0) | |
338 | (match-end 0)))))) | |
339 | (setcar active activemin)) | |
340 | (nnmail-save-active nnfolder-group-alist nnfolder-active-file) | |
341 | (nconc rest articles)))) | |
342 | ||
231f989b | 343 | (deffoo nnfolder-request-move-article |
41487370 | 344 | (article group server accept-form &optional last) |
231f989b | 345 | (nnfolder-possibly-change-group group server) |
41487370 LMI |
346 | (let ((buf (get-buffer-create " *nnfolder move*")) |
347 | result) | |
348 | (and | |
349 | (nnfolder-request-article article group server) | |
350 | (save-excursion | |
351 | (set-buffer buf) | |
352 | (buffer-disable-undo (current-buffer)) | |
353 | (erase-buffer) | |
354 | (insert-buffer-substring nntp-server-buffer) | |
355 | (goto-char (point-min)) | |
356 | (while (re-search-forward | |
357 | (concat "^" nnfolder-article-marker) | |
358 | (save-excursion (search-forward "\n\n" nil t) (point)) t) | |
359 | (delete-region (progn (beginning-of-line) (point)) | |
360 | (progn (forward-line 1) (point)))) | |
361 | (setq result (eval accept-form)) | |
362 | (kill-buffer buf) | |
363 | result) | |
364 | (save-excursion | |
231f989b | 365 | (nnfolder-possibly-change-group group server) |
41487370 LMI |
366 | (set-buffer nnfolder-current-buffer) |
367 | (goto-char (point-min)) | |
368 | (if (search-forward (nnfolder-article-string article) nil t) | |
369 | (nnfolder-delete-mail)) | |
231f989b | 370 | (and last (nnfolder-save-buffer)))) |
41487370 LMI |
371 | result)) |
372 | ||
231f989b LMI |
373 | (deffoo nnfolder-request-accept-article (group &optional server last) |
374 | (nnfolder-possibly-change-group group server) | |
375 | (nnmail-check-syntax) | |
41487370 LMI |
376 | (and (stringp group) (nnfolder-possibly-change-group group)) |
377 | (let ((buf (current-buffer)) | |
378 | result) | |
379 | (goto-char (point-min)) | |
231f989b LMI |
380 | (when (looking-at "X-From-Line: ") |
381 | (replace-match "From ")) | |
41487370 LMI |
382 | (and |
383 | (nnfolder-request-list) | |
384 | (save-excursion | |
385 | (set-buffer buf) | |
386 | (goto-char (point-min)) | |
387 | (search-forward "\n\n" nil t) | |
388 | (forward-line -1) | |
389 | (while (re-search-backward (concat "^" nnfolder-article-marker) nil t) | |
390 | (delete-region (point) (progn (forward-line 1) (point)))) | |
391 | (setq result (car (nnfolder-save-mail (and (stringp group) group))))) | |
392 | (save-excursion | |
393 | (set-buffer nnfolder-current-buffer) | |
231f989b | 394 | (and last (nnfolder-save-buffer)))) |
41487370 | 395 | (nnmail-save-active nnfolder-group-alist nnfolder-active-file) |
231f989b LMI |
396 | (unless result |
397 | (nnheader-report 'nnfolder "Couldn't store article")) | |
41487370 LMI |
398 | result)) |
399 | ||
231f989b | 400 | (deffoo nnfolder-request-replace-article (article group buffer) |
41487370 LMI |
401 | (nnfolder-possibly-change-group group) |
402 | (save-excursion | |
403 | (set-buffer nnfolder-current-buffer) | |
404 | (goto-char (point-min)) | |
405 | (if (not (search-forward (nnfolder-article-string article) nil t)) | |
406 | nil | |
407 | (nnfolder-delete-mail t t) | |
408 | (insert-buffer-substring buffer) | |
231f989b | 409 | (nnfolder-save-buffer) |
41487370 LMI |
410 | t))) |
411 | ||
231f989b LMI |
412 | (deffoo nnfolder-request-delete-group (group &optional force server) |
413 | (nnfolder-close-group group server t) | |
414 | ;; Delete all articles in GROUP. | |
415 | (if (not force) | |
416 | () ; Don't delete the articles. | |
417 | ;; Delete the file that holds the group. | |
418 | (condition-case nil | |
419 | (delete-file (nnfolder-group-pathname group)) | |
420 | (error nil))) | |
421 | ;; Remove the group from all structures. | |
422 | (setq nnfolder-group-alist | |
423 | (delq (assoc group nnfolder-group-alist) nnfolder-group-alist) | |
424 | nnfolder-current-group nil | |
425 | nnfolder-current-buffer nil) | |
426 | ;; Save the active file. | |
427 | (nnmail-save-active nnfolder-group-alist nnfolder-active-file) | |
428 | t) | |
429 | ||
430 | (deffoo nnfolder-request-rename-group (group new-name &optional server) | |
431 | (nnfolder-possibly-change-group group server) | |
432 | (save-excursion | |
433 | (set-buffer nnfolder-current-buffer) | |
434 | (and (file-writable-p buffer-file-name) | |
435 | (condition-case () | |
436 | (progn | |
437 | (rename-file | |
438 | buffer-file-name | |
439 | (nnfolder-group-pathname new-name)) | |
440 | t) | |
441 | (error nil)) | |
442 | ;; That went ok, so we change the internal structures. | |
443 | (let ((entry (assoc group nnfolder-group-alist))) | |
444 | (and entry (setcar entry new-name)) | |
445 | (setq nnfolder-current-buffer nil | |
446 | nnfolder-current-group nil) | |
447 | ;; Save the new group alist. | |
448 | (nnmail-save-active nnfolder-group-alist nnfolder-active-file) | |
449 | ;; We kill the buffer instead of renaming it and stuff. | |
450 | (kill-buffer (current-buffer)) | |
451 | t)))) | |
452 | ||
41487370 LMI |
453 | \f |
454 | ;;; Internal functions. | |
455 | ||
231f989b LMI |
456 | (defun nnfolder-article-string (article) |
457 | (if (numberp article) | |
458 | (concat "\n" nnfolder-article-marker (int-to-string article) " ") | |
459 | (concat "\nMessage-ID: " article))) | |
460 | ||
41487370 | 461 | (defun nnfolder-delete-mail (&optional force leave-delim) |
231f989b | 462 | "Delete the message that point is in." |
41487370 | 463 | (save-excursion |
231f989b LMI |
464 | (delete-region |
465 | (save-excursion | |
466 | (re-search-backward (concat "^" message-unix-mail-delimiter) nil t) | |
467 | (if leave-delim (progn (forward-line 1) (point)) | |
468 | (match-beginning 0))) | |
469 | (progn | |
470 | (forward-line 1) | |
471 | (if (re-search-forward (concat "^" message-unix-mail-delimiter) nil t) | |
472 | (if (and (not (bobp)) leave-delim) | |
473 | (progn (forward-line -2) (point)) | |
474 | (match-beginning 0)) | |
475 | (point-max)))))) | |
476 | ||
477 | ;; When scanning, we're not looking t immediately switch into the group - if | |
478 | ;; we know our information is up to date, don't even bother reading the file. | |
479 | (defun nnfolder-possibly-change-group (group &optional server scanning) | |
480 | (when (and server | |
481 | (not (nnfolder-server-opened server))) | |
482 | (nnfolder-open-server server)) | |
483 | (when (and group (or nnfolder-current-buffer | |
484 | (not (equal group nnfolder-current-group)))) | |
485 | (unless (file-exists-p nnfolder-directory) | |
486 | (make-directory (directory-file-name nnfolder-directory) t)) | |
487 | (nnfolder-possibly-activate-groups nil) | |
488 | (or (assoc group nnfolder-group-alist) | |
489 | (not (file-exists-p | |
490 | (nnfolder-group-pathname group))) | |
491 | (progn | |
492 | (setq nnfolder-group-alist | |
493 | (cons (list group (cons 1 0)) nnfolder-group-alist)) | |
494 | (nnmail-save-active nnfolder-group-alist nnfolder-active-file))) | |
495 | (let (inf file) | |
496 | (if (and (equal group nnfolder-current-group) | |
497 | nnfolder-current-buffer | |
498 | (buffer-name nnfolder-current-buffer)) | |
41487370 | 499 | () |
231f989b LMI |
500 | (setq nnfolder-current-group group) |
501 | ||
502 | ;; If we have to change groups, see if we don't already have the mbox | |
503 | ;; in memory. If we do, verify the modtime and destroy the mbox if | |
504 | ;; needed so we can rescan it. | |
505 | (if (setq inf (assoc group nnfolder-buffer-alist)) | |
506 | (setq nnfolder-current-buffer (nth 1 inf))) | |
507 | ||
508 | ;; If the buffer is not live, make sure it isn't in the alist. If it | |
509 | ;; is live, verify that nobody else has touched the file since last | |
510 | ;; time. | |
511 | (if (or (not (and nnfolder-current-buffer | |
512 | (buffer-name nnfolder-current-buffer))) | |
513 | (not (and (bufferp nnfolder-current-buffer) | |
514 | (verify-visited-file-modtime | |
515 | nnfolder-current-buffer)))) | |
516 | (progn | |
517 | (if (and nnfolder-current-buffer | |
518 | (buffer-name nnfolder-current-buffer) | |
519 | (bufferp nnfolder-current-buffer)) | |
520 | (kill-buffer nnfolder-current-buffer)) | |
521 | (setq nnfolder-buffer-alist (delq inf nnfolder-buffer-alist)) | |
522 | (setq inf nil))) | |
523 | ||
524 | (if inf | |
525 | () | |
526 | (save-excursion | |
527 | (setq file (nnfolder-group-pathname group)) | |
528 | (if (file-directory-p (file-truename file)) | |
529 | () | |
530 | (unless (file-exists-p file) | |
531 | (unless (file-exists-p (file-name-directory file)) | |
532 | (make-directory (file-name-directory file) t)) | |
41487370 | 533 | (write-region 1 1 file t 'nomesg)) |
231f989b LMI |
534 | (setq nnfolder-current-buffer |
535 | (nnfolder-read-folder file scanning)) | |
536 | (if nnfolder-current-buffer | |
537 | (progn | |
538 | (set-buffer nnfolder-current-buffer) | |
539 | (setq nnfolder-buffer-alist | |
540 | (cons (list group nnfolder-current-buffer) | |
541 | nnfolder-buffer-alist))))))))) | |
542 | (setq nnfolder-current-group group))) | |
41487370 LMI |
543 | |
544 | (defun nnfolder-save-mail (&optional group) | |
545 | "Called narrowed to an article." | |
546 | (let* ((nnmail-split-methods | |
547 | (if group (list (list group "")) nnmail-split-methods)) | |
548 | (group-art-list | |
549 | (nreverse (nnmail-article-group 'nnfolder-active-number))) | |
231f989b | 550 | (delim (concat "^" message-unix-mail-delimiter)) |
41487370 | 551 | save-list group-art) |
231f989b LMI |
552 | (goto-char (point-min)) |
553 | ;; This might come from somewhere else. | |
554 | (unless (looking-at delim) | |
555 | (insert "From nobody " (current-time-string) "\n") | |
556 | (goto-char (point-min))) | |
557 | ;; Quote all "From " lines in the article. | |
558 | (forward-line 1) | |
559 | (while (re-search-forward delim nil t) | |
560 | (beginning-of-line) | |
561 | (insert "> ")) | |
41487370 LMI |
562 | (setq save-list group-art-list) |
563 | (nnmail-insert-lines) | |
564 | (nnmail-insert-xref group-art-list) | |
231f989b | 565 | (run-hooks 'nnmail-prepare-save-mail-hook) |
41487370 LMI |
566 | (run-hooks 'nnfolder-prepare-save-mail-hook) |
567 | ||
568 | ;; Insert the mail into each of the destination groups. | |
569 | (while group-art-list | |
570 | (setq group-art (car group-art-list) | |
571 | group-art-list (cdr group-art-list)) | |
572 | ||
573 | ;; Kill the previous newsgroup markers. | |
574 | (goto-char (point-min)) | |
575 | (search-forward "\n\n" nil t) | |
576 | (forward-line -1) | |
577 | (while (search-backward (concat "\n" nnfolder-article-marker) nil t) | |
578 | (delete-region (1+ (point)) (progn (forward-line 2) (point)))) | |
579 | ||
41487370 | 580 | (nnfolder-possibly-change-group (car group-art)) |
231f989b | 581 | ;; Insert the new newsgroup marker. |
41487370 | 582 | (nnfolder-insert-newsgroup-line group-art) |
231f989b LMI |
583 | (unless nnfolder-current-buffer |
584 | (nnfolder-close-group (car group-art)) | |
585 | (nnfolder-request-create-group (car group-art)) | |
586 | (nnfolder-possibly-change-group (car group-art))) | |
41487370 LMI |
587 | (let ((beg (point-min)) |
588 | (end (point-max)) | |
589 | (obuf (current-buffer))) | |
590 | (set-buffer nnfolder-current-buffer) | |
591 | (goto-char (point-max)) | |
231f989b LMI |
592 | (unless (eolp) |
593 | (insert "\n")) | |
594 | (insert "\n") | |
41487370 LMI |
595 | (insert-buffer-substring obuf beg end) |
596 | (set-buffer obuf))) | |
597 | ||
598 | ;; Did we save it anywhere? | |
599 | save-list)) | |
600 | ||
601 | (defun nnfolder-insert-newsgroup-line (group-art) | |
602 | (save-excursion | |
603 | (goto-char (point-min)) | |
604 | (if (search-forward "\n\n" nil t) | |
605 | (progn | |
606 | (forward-char -1) | |
607 | (insert (format (concat nnfolder-article-marker "%d %s\n") | |
608 | (cdr group-art) (current-time-string))))))) | |
609 | ||
610 | (defun nnfolder-possibly-activate-groups (&optional group) | |
611 | (save-excursion | |
612 | ;; If we're looking for the activation of a specific group, find out | |
613 | ;; its real name and switch to it. | |
614 | (if group (nnfolder-possibly-change-group group)) | |
615 | ;; If the group alist isn't active, activate it now. | |
616 | (nnmail-activate 'nnfolder))) | |
617 | ||
618 | (defun nnfolder-active-number (group) | |
231f989b LMI |
619 | (when group |
620 | (save-excursion | |
621 | ;; Find the next article number in GROUP. | |
622 | (prog1 | |
623 | (let ((active (cadr (assoc group nnfolder-group-alist)))) | |
624 | (if active | |
625 | (setcdr active (1+ (cdr active))) | |
626 | ;; This group is new, so we create a new entry for it. | |
627 | ;; This might be a bit naughty... creating groups on the drop of | |
628 | ;; a hat, but I don't know... | |
629 | (setq nnfolder-group-alist | |
630 | (cons (list group (setq active (cons 1 1))) | |
631 | nnfolder-group-alist))) | |
632 | (cdr active)) | |
633 | (nnmail-save-active nnfolder-group-alist nnfolder-active-file) | |
634 | (nnfolder-possibly-activate-groups group))))) | |
41487370 LMI |
635 | |
636 | ||
637 | ;; This method has a problem if you've accidentally let the active list get | |
638 | ;; out of sync with the files. This could happen, say, if you've | |
639 | ;; accidentally gotten new mail with something other than Gnus (but why | |
640 | ;; would _that_ ever happen? :-). In that case, we will be in the middle of | |
641 | ;; processing the file, ready to add new X-Gnus article number markers, and | |
a7acbbe4 | 642 | ;; we'll run across a message with no ID yet - the active list _may_not_ be |
41487370 LMI |
643 | ;; ready for us yet. |
644 | ||
645 | ;; To handle this, I'm modifying this routine to maintain the maximum ID seen | |
646 | ;; so far, and when we hit a message with no ID, we will _manually_ scan the | |
647 | ;; rest of the message looking for any more, possibly higher IDs. We'll | |
648 | ;; assume the maximum that we find is the highest active. Note that this | |
649 | ;; shouldn't cost us much extra time at all, but will be a lot less | |
650 | ;; vulnerable to glitches between the mbox and the active file. | |
651 | ||
231f989b LMI |
652 | (defun nnfolder-read-folder (file &optional scanning) |
653 | ;; This is an attempt at a serious shortcut - don't even read in the file | |
654 | ;; if we know we've seen it since the last time it was touched. | |
655 | (let ((scantime (cadr (assoc nnfolder-current-group | |
656 | nnfolder-scantime-alist))) | |
657 | (modtime (nth 5 (or (file-attributes file) '(nil nil nil nil nil))))) | |
658 | (if (and scanning scantime | |
659 | (eq (car scantime) (car modtime)) | |
660 | (eq (cdr scantime) (cadr modtime))) | |
661 | nil | |
662 | (save-excursion | |
663 | (nnfolder-possibly-activate-groups nil) | |
664 | ;; Read in the file. | |
665 | (set-buffer (setq nnfolder-current-buffer | |
666 | (nnheader-find-file-noselect file nil 'raw))) | |
667 | (buffer-disable-undo (current-buffer)) | |
668 | ;; If the file hasn't been touched since the last time we scanned it, | |
669 | ;; don't bother doing anything with it. | |
670 | (let ((delim (concat "^" message-unix-mail-delimiter)) | |
671 | (marker (concat "\n" nnfolder-article-marker)) | |
672 | (number "[0-9]+") | |
c4c7f54c LMI |
673 | (active (or (cadr (assoc nnfolder-current-group |
674 | nnfolder-group-alist)) | |
675 | (cons 1 0))) | |
231f989b LMI |
676 | (scantime (assoc nnfolder-current-group nnfolder-scantime-alist)) |
677 | (minid (lsh -1 -1)) | |
678 | maxid start end newscantime) | |
679 | ||
680 | (setq maxid (or (cdr active) 0)) | |
681 | (goto-char (point-min)) | |
682 | ||
683 | ;; Anytime the active number is 1 or 0, it is suspect. In that | |
684 | ;; case, search the file manually to find the active number. Or, | |
685 | ;; of course, if we're being paranoid. (This would also be the | |
686 | ;; place to build other lists from the header markers, such as | |
687 | ;; expunge lists, etc., if we ever desired to abandon the active | |
688 | ;; file entirely for mboxes.) | |
689 | (when (or nnfolder-ignore-active-file | |
690 | (< maxid 2)) | |
691 | (while (and (search-forward marker nil t) | |
692 | (re-search-forward number nil t)) | |
693 | (let ((newnum (string-to-number (match-string 0)))) | |
694 | (setq maxid (max maxid newnum)) | |
695 | (setq minid (min minid newnum)))) | |
696 | (setcar active (max 1 (min minid maxid))) | |
697 | (setcdr active (max maxid (cdr active))) | |
698 | (goto-char (point-min))) | |
699 | ||
700 | ;; As long as we trust that the user will only insert unmarked mail | |
701 | ;; at the end, go to the end and search backwards for the last | |
702 | ;; marker. Find the start of that message, and begin to search for | |
703 | ;; unmarked messages from there. | |
704 | (if (not (or nnfolder-distrust-mbox | |
705 | (< maxid 2))) | |
706 | (progn | |
707 | (goto-char (point-max)) | |
708 | (if (not (re-search-backward marker nil t)) | |
709 | (goto-char (point-min)) | |
710 | (if (not (re-search-backward delim nil t)) | |
711 | (goto-char (point-min)))))) | |
712 | ||
713 | ;; Keep track of the active number on our own, and insert it back | |
714 | ;; into the active list when we're done. Also, prime the pump to | |
715 | ;; cut down on the number of searches we do. | |
716 | (setq end (point-marker)) | |
717 | (set-marker end (or (and (re-search-forward delim nil t) | |
718 | (match-beginning 0)) | |
719 | (point-max))) | |
720 | (while (not (= end (point-max))) | |
721 | (setq start (marker-position end)) | |
722 | (goto-char end) | |
723 | ;; There may be more than one "From " line, so we skip past | |
724 | ;; them. | |
725 | (while (looking-at delim) | |
726 | (forward-line 1)) | |
727 | (set-marker end (or (and (re-search-forward delim nil t) | |
728 | (match-beginning 0)) | |
729 | (point-max))) | |
730 | (goto-char start) | |
731 | (if (not (search-forward marker end t)) | |
732 | (progn | |
733 | (narrow-to-region start end) | |
734 | (nnmail-insert-lines) | |
735 | (nnfolder-insert-newsgroup-line | |
736 | (cons nil (nnfolder-active-number nnfolder-current-group))) | |
737 | (widen)))) | |
738 | ||
739 | ;; Make absolutely sure that the active list reflects reality! | |
740 | (nnmail-save-active nnfolder-group-alist nnfolder-active-file) | |
741 | ;; Set the scantime for this group. | |
742 | (setq newscantime (visited-file-modtime)) | |
743 | (if scantime | |
744 | (setcdr scantime (list newscantime)) | |
745 | (push (list nnfolder-current-group newscantime) | |
746 | nnfolder-scantime-alist)) | |
747 | (current-buffer)))))) | |
748 | ||
749 | ;;;###autoload | |
750 | (defun nnfolder-generate-active-file () | |
751 | "Look for mbox folders in the nnfolder directory and make them into groups." | |
752 | (interactive) | |
753 | (nnmail-activate 'nnfolder) | |
754 | (let ((files (directory-files nnfolder-directory)) | |
755 | file) | |
756 | (while (setq file (pop files)) | |
757 | (when (and (not (backup-file-name-p file)) | |
758 | (nnheader-mail-file-mbox-p file)) | |
759 | (nnheader-message 5 "Adding group %s..." file) | |
760 | (push (list file (cons 1 0)) nnfolder-group-alist) | |
761 | (nnfolder-possibly-change-group file) | |
762 | ;; (nnfolder-read-folder file) | |
763 | (nnfolder-close-group file)) | |
764 | (message "")))) | |
765 | ||
766 | (defun nnfolder-group-pathname (group) | |
767 | "Make pathname for GROUP." | |
768 | (let ((dir (file-name-as-directory (expand-file-name nnfolder-directory)))) | |
769 | ;; If this file exists, we use it directly. | |
770 | (if (or nnmail-use-long-file-names | |
771 | (file-exists-p (concat dir group))) | |
772 | (concat dir group) | |
773 | ;; If not, we translate dots into slashes. | |
774 | (concat dir (nnheader-replace-chars-in-string group ?. ?/))))) | |
775 | ||
776 | (defun nnfolder-save-buffer () | |
777 | "Save the buffer." | |
778 | (when (buffer-modified-p) | |
779 | (run-hooks 'nnfolder-save-buffer-hook) | |
780 | (save-buffer))) | |
41487370 LMI |
781 | |
782 | (provide 'nnfolder) | |
783 | ||
784 | ;;; nnfolder.el ends here |