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1 | ;;; nnfolder.el --- mail folder access for Gnus |
2 | ;; Copyright (C) 1995,96,97 Free Software Foundation, Inc. | |
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> | |
7 | ;; Keywords: mail | |
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 | |
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. | |
25 | ||
26 | ;;; Commentary: | |
27 | ||
28 | ;;; Code: | |
29 | ||
30 | (require 'nnheader) | |
31 | (require 'message) | |
32 | (require 'nnmail) | |
33 | (require 'nnoo) | |
34 | (require 'cl) | |
35 | (require 'gnus-util) | |
36 | ||
37 | (nnoo-declare nnfolder) | |
38 | ||
39 | (defvoo nnfolder-directory (expand-file-name message-directory) | |
40 | "The name of the nnfolder directory.") | |
41 | ||
42 | (defvoo nnfolder-active-file | |
43 | (nnheader-concat nnfolder-directory "active") | |
44 | "The name of the active file.") | |
45 | ||
46 | ;; I renamed this variable to something more in keeping with the general GNU | |
47 | ;; style. -SLB | |
48 | ||
49 | (defvoo nnfolder-ignore-active-file nil | |
50 | "If non-nil, causes nnfolder to do some extra work in order to determine | |
51 | the true active ranges of an mbox file. Note that the active file is still | |
52 | saved, but it's values are not used. This costs some extra time when | |
53 | scanning an mbox when opening it.") | |
54 | ||
55 | (defvoo nnfolder-distrust-mbox nil | |
56 | "If non-nil, causes nnfolder to not trust the user with respect to | |
57 | inserting unaccounted for mail in the middle of an mbox file. This can greatly | |
58 | slow down scans, which now must scan the entire file for unmarked messages. | |
59 | When nil, scans occur forward from the last marked message, a huge | |
60 | time saver for large mailboxes.") | |
61 | ||
62 | (defvoo nnfolder-newsgroups-file | |
63 | (concat (file-name-as-directory nnfolder-directory) "newsgroups") | |
64 | "Mail newsgroups description file.") | |
65 | ||
66 | (defvoo nnfolder-get-new-mail t | |
67 | "If non-nil, nnfolder will check the incoming mail file and split the mail.") | |
68 | ||
69 | (defvoo nnfolder-prepare-save-mail-hook nil | |
70 | "Hook run narrowed to an article before saving.") | |
71 | ||
72 | (defvoo nnfolder-save-buffer-hook nil | |
73 | "Hook run before saving the nnfolder mbox buffer.") | |
74 | ||
75 | (defvoo nnfolder-inhibit-expiry nil | |
76 | "If non-nil, inhibit expiry.") | |
77 | ||
78 | \f | |
79 | ||
80 | (defconst nnfolder-version "nnfolder 1.0" | |
81 | "nnfolder version.") | |
82 | ||
83 | (defconst nnfolder-article-marker "X-Gnus-Article-Number: " | |
84 | "String used to demarcate what the article number for a message is.") | |
85 | ||
86 | (defvoo nnfolder-current-group nil) | |
87 | (defvoo nnfolder-current-buffer nil) | |
88 | (defvoo nnfolder-status-string "") | |
89 | (defvoo nnfolder-group-alist nil) | |
90 | (defvoo nnfolder-buffer-alist nil) | |
91 | (defvoo nnfolder-scantime-alist nil) | |
92 | (defvoo nnfolder-active-timestamp nil) | |
93 | ||
94 | \f | |
95 | ||
96 | ;;; Interface functions | |
97 | ||
98 | (nnoo-define-basics nnfolder) | |
99 | ||
100 | (deffoo nnfolder-retrieve-headers (articles &optional group server fetch-old) | |
101 | (save-excursion | |
102 | (set-buffer nntp-server-buffer) | |
103 | (erase-buffer) | |
104 | (let (article art-string start stop) | |
105 | (nnfolder-possibly-change-group group server) | |
106 | (when nnfolder-current-buffer | |
107 | (set-buffer nnfolder-current-buffer) | |
108 | (goto-char (point-min)) | |
109 | (if (stringp (car articles)) | |
110 | 'headers | |
111 | (while articles | |
112 | (setq article (car articles)) | |
113 | (setq art-string (nnfolder-article-string article)) | |
114 | (set-buffer nnfolder-current-buffer) | |
115 | (when (or (search-forward art-string nil t) | |
116 | ;; Don't search the whole file twice! Also, articles | |
117 | ;; probably have some locality by number, so searching | |
118 | ;; backwards will be faster. Especially if we're at the | |
119 | ;; beginning of the buffer :-). -SLB | |
120 | (search-backward art-string nil t)) | |
121 | (nnmail-search-unix-mail-delim-backward) | |
122 | (setq start (point)) | |
123 | (search-forward "\n\n" nil t) | |
124 | (setq stop (1- (point))) | |
125 | (set-buffer nntp-server-buffer) | |
126 | (insert (format "221 %d Article retrieved.\n" article)) | |
127 | (insert-buffer-substring nnfolder-current-buffer start stop) | |
128 | (goto-char (point-max)) | |
129 | (insert ".\n")) | |
130 | (setq articles (cdr articles))) | |
131 | ||
132 | (set-buffer nntp-server-buffer) | |
133 | (nnheader-fold-continuation-lines) | |
134 | 'headers))))) | |
135 | ||
136 | (deffoo nnfolder-open-server (server &optional defs) | |
137 | (nnoo-change-server 'nnfolder server defs) | |
138 | (nnmail-activate 'nnfolder t) | |
139 | (gnus-make-directory nnfolder-directory) | |
140 | (cond | |
141 | ((not (file-exists-p nnfolder-directory)) | |
142 | (nnfolder-close-server) | |
143 | (nnheader-report 'nnfolder "Couldn't create directory: %s" | |
144 | nnfolder-directory)) | |
145 | ((not (file-directory-p (file-truename nnfolder-directory))) | |
146 | (nnfolder-close-server) | |
147 | (nnheader-report 'nnfolder "Not a directory: %s" nnfolder-directory)) | |
148 | (t | |
149 | (nnmail-activate 'nnfolder) | |
150 | (nnheader-report 'nnfolder "Opened server %s using directory %s" | |
151 | server nnfolder-directory) | |
152 | t))) | |
153 | ||
154 | (deffoo nnfolder-request-close () | |
155 | (let ((alist nnfolder-buffer-alist)) | |
156 | (while alist | |
157 | (nnfolder-close-group (caar alist) nil t) | |
158 | (setq alist (cdr alist)))) | |
159 | (nnoo-close-server 'nnfolder) | |
160 | (setq nnfolder-buffer-alist nil | |
161 | nnfolder-group-alist nil)) | |
162 | ||
163 | (deffoo nnfolder-request-article (article &optional group server buffer) | |
164 | (nnfolder-possibly-change-group group server) | |
165 | (save-excursion | |
166 | (set-buffer nnfolder-current-buffer) | |
167 | (goto-char (point-min)) | |
168 | (when (search-forward (nnfolder-article-string article) nil t) | |
169 | (let (start stop) | |
170 | (nnmail-search-unix-mail-delim-backward) | |
171 | (setq start (point)) | |
172 | (forward-line 1) | |
173 | (unless (and (nnmail-search-unix-mail-delim) | |
174 | (forward-line -1)) | |
175 | (goto-char (point-max))) | |
176 | (setq stop (point)) | |
177 | (let ((nntp-server-buffer (or buffer nntp-server-buffer))) | |
178 | (set-buffer nntp-server-buffer) | |
179 | (erase-buffer) | |
180 | (insert-buffer-substring nnfolder-current-buffer start stop) | |
181 | (goto-char (point-min)) | |
182 | (while (looking-at "From ") | |
183 | (delete-char 5) | |
184 | (insert "X-From-Line: ") | |
185 | (forward-line 1)) | |
186 | (if (numberp article) | |
187 | (cons nnfolder-current-group article) | |
188 | (goto-char (point-min)) | |
189 | (search-forward (concat "\n" nnfolder-article-marker)) | |
190 | (cons nnfolder-current-group | |
191 | (string-to-int | |
192 | (buffer-substring | |
193 | (point) (progn (end-of-line) (point))))))))))) | |
194 | ||
195 | (deffoo nnfolder-request-group (group &optional server dont-check) | |
196 | (nnfolder-possibly-change-group group server t) | |
197 | (save-excursion | |
198 | (if (not (assoc group nnfolder-group-alist)) | |
199 | (nnheader-report 'nnfolder "No such group: %s" group) | |
200 | (if dont-check | |
201 | (progn | |
202 | (nnheader-report 'nnfolder "Selected group %s" group) | |
203 | t) | |
204 | (let* ((active (assoc group nnfolder-group-alist)) | |
205 | (group (car active)) | |
206 | (range (cadr active))) | |
207 | (cond | |
208 | ((null active) | |
209 | (nnheader-report 'nnfolder "No such group: %s" group)) | |
210 | ((null nnfolder-current-group) | |
211 | (nnheader-report 'nnfolder "Empty group: %s" group)) | |
212 | (t | |
213 | (nnheader-report 'nnfolder "Selected group %s" group) | |
214 | (nnheader-insert "211 %d %d %d %s\n" | |
215 | (1+ (- (cdr range) (car range))) | |
216 | (car range) (cdr range) group)))))))) | |
217 | ||
218 | (deffoo nnfolder-request-scan (&optional group server) | |
219 | (nnfolder-possibly-change-group nil server) | |
220 | (when nnfolder-get-new-mail | |
221 | (nnfolder-possibly-change-group group server) | |
222 | (nnmail-get-new-mail | |
223 | 'nnfolder | |
224 | (lambda () | |
225 | (let ((bufs nnfolder-buffer-alist)) | |
226 | (save-excursion | |
227 | (while bufs | |
228 | (if (not (gnus-buffer-live-p (nth 1 (car bufs)))) | |
229 | (setq nnfolder-buffer-alist | |
230 | (delq (car bufs) nnfolder-buffer-alist)) | |
231 | (set-buffer (nth 1 (car bufs))) | |
232 | (nnfolder-save-buffer) | |
233 | (kill-buffer (current-buffer))) | |
234 | (setq bufs (cdr bufs)))))) | |
235 | nnfolder-directory | |
236 | group))) | |
237 | ||
238 | ;; Don't close the buffer if we're not shutting down the server. This way, | |
239 | ;; we can keep the buffer in the group buffer cache, and not have to grovel | |
240 | ;; over the buffer again unless we add new mail to it or modify it in some | |
241 | ;; way. | |
242 | ||
243 | (deffoo nnfolder-close-group (group &optional server force) | |
244 | ;; Make sure we _had_ the group open. | |
245 | (when (or (assoc group nnfolder-buffer-alist) | |
246 | (equal group nnfolder-current-group)) | |
247 | (let ((inf (assoc group nnfolder-buffer-alist))) | |
248 | (when inf | |
249 | (when (and nnfolder-current-group | |
250 | nnfolder-current-buffer) | |
251 | (push (list nnfolder-current-group nnfolder-current-buffer) | |
252 | nnfolder-buffer-alist)) | |
253 | (setq nnfolder-buffer-alist | |
254 | (delq inf nnfolder-buffer-alist)) | |
255 | (setq nnfolder-current-buffer (cadr inf) | |
256 | nnfolder-current-group (car inf)))) | |
257 | (when (and nnfolder-current-buffer | |
258 | (buffer-name nnfolder-current-buffer)) | |
259 | (save-excursion | |
260 | (set-buffer nnfolder-current-buffer) | |
261 | ;; If the buffer was modified, write the file out now. | |
262 | (nnfolder-save-buffer) | |
263 | ;; If we're shutting the server down, we need to kill the | |
264 | ;; buffer and remove it from the open buffer list. Or, of | |
265 | ;; course, if we're trying to minimize our space impact. | |
266 | (kill-buffer (current-buffer)) | |
267 | (setq nnfolder-buffer-alist (delq (assoc group nnfolder-buffer-alist) | |
268 | nnfolder-buffer-alist))))) | |
269 | (setq nnfolder-current-group nil | |
270 | nnfolder-current-buffer nil) | |
271 | t) | |
272 | ||
273 | (deffoo nnfolder-request-create-group (group &optional server args) | |
274 | (nnfolder-possibly-change-group nil server) | |
275 | (nnmail-activate 'nnfolder) | |
276 | (when group | |
277 | (unless (assoc group nnfolder-group-alist) | |
278 | (push (list group (cons 1 0)) nnfolder-group-alist) | |
a8151ef7 LMI |
279 | (nnmail-save-active nnfolder-group-alist nnfolder-active-file) |
280 | (nnfolder-read-folder group))) | |
eec82323 LMI |
281 | t) |
282 | ||
283 | (deffoo nnfolder-request-list (&optional server) | |
284 | (nnfolder-possibly-change-group nil server) | |
285 | (save-excursion | |
58724016 KH |
286 | ;; 1997/8/14 by MORIOKA Tomohiko |
287 | ;; for XEmacs/mule. | |
288 | (let ((nnmail-file-coding-system nnmail-active-file-coding-system) | |
ddcfd8de | 289 | (file-name-coding-system 'binary) ; for Emacs 20 |
58724016 KH |
290 | (pathname-coding-system 'binary)) ; for XEmacs/mule |
291 | (nnmail-find-file nnfolder-active-file) | |
292 | (setq nnfolder-group-alist (nnmail-get-active))) | |
eec82323 LMI |
293 | t)) |
294 | ||
295 | (deffoo nnfolder-request-newgroups (date &optional server) | |
296 | (nnfolder-possibly-change-group nil server) | |
297 | (nnfolder-request-list server)) | |
298 | ||
299 | (deffoo nnfolder-request-list-newsgroups (&optional server) | |
300 | (nnfolder-possibly-change-group nil server) | |
301 | (save-excursion | |
302 | (nnmail-find-file nnfolder-newsgroups-file))) | |
303 | ||
304 | (deffoo nnfolder-request-expire-articles | |
305 | (articles newsgroup &optional server force) | |
306 | (nnfolder-possibly-change-group newsgroup server) | |
307 | (let* ((is-old t) | |
308 | rest) | |
309 | (nnmail-activate 'nnfolder) | |
310 | ||
311 | (save-excursion | |
312 | (set-buffer nnfolder-current-buffer) | |
313 | (while (and articles is-old) | |
314 | (goto-char (point-min)) | |
315 | (when (search-forward (nnfolder-article-string (car articles)) nil t) | |
316 | (if (setq is-old | |
317 | (nnmail-expired-article-p | |
318 | newsgroup | |
319 | (buffer-substring | |
320 | (point) (progn (end-of-line) (point))) | |
321 | force nnfolder-inhibit-expiry)) | |
322 | (progn | |
323 | (nnheader-message 5 "Deleting article %d..." | |
324 | (car articles) newsgroup) | |
325 | (nnfolder-delete-mail)) | |
326 | (push (car articles) rest))) | |
327 | (setq articles (cdr articles))) | |
328 | (unless nnfolder-inhibit-expiry | |
329 | (nnheader-message 5 "Deleting articles...done")) | |
330 | (nnfolder-save-buffer) | |
331 | (nnfolder-adjust-min-active newsgroup) | |
332 | (nnmail-save-active nnfolder-group-alist nnfolder-active-file) | |
333 | (nconc rest articles)))) | |
334 | ||
335 | (deffoo nnfolder-request-move-article | |
336 | (article group server accept-form &optional last) | |
337 | (let ((buf (get-buffer-create " *nnfolder move*")) | |
338 | result) | |
339 | (and | |
340 | (nnfolder-request-article article group server) | |
341 | (save-excursion | |
342 | (set-buffer buf) | |
343 | (buffer-disable-undo (current-buffer)) | |
344 | (erase-buffer) | |
345 | (insert-buffer-substring nntp-server-buffer) | |
346 | (goto-char (point-min)) | |
347 | (while (re-search-forward | |
348 | (concat "^" nnfolder-article-marker) | |
349 | (save-excursion (search-forward "\n\n" nil t) (point)) t) | |
350 | (delete-region (progn (beginning-of-line) (point)) | |
351 | (progn (forward-line 1) (point)))) | |
352 | (setq result (eval accept-form)) | |
353 | (kill-buffer buf) | |
354 | result) | |
355 | (save-excursion | |
356 | (nnfolder-possibly-change-group group server) | |
357 | (set-buffer nnfolder-current-buffer) | |
358 | (goto-char (point-min)) | |
359 | (when (search-forward (nnfolder-article-string article) nil t) | |
360 | (nnfolder-delete-mail)) | |
361 | (when last | |
362 | (nnfolder-save-buffer) | |
363 | (nnfolder-adjust-min-active group) | |
364 | (nnmail-save-active nnfolder-group-alist nnfolder-active-file)))) | |
365 | result)) | |
366 | ||
367 | (deffoo nnfolder-request-accept-article (group &optional server last) | |
368 | (nnfolder-possibly-change-group group server) | |
369 | (nnmail-check-syntax) | |
370 | (let ((buf (current-buffer)) | |
371 | result art-group) | |
372 | (goto-char (point-min)) | |
373 | (when (looking-at "X-From-Line: ") | |
374 | (replace-match "From ")) | |
375 | (and | |
376 | (nnfolder-request-list) | |
377 | (save-excursion | |
378 | (set-buffer buf) | |
379 | (goto-char (point-min)) | |
380 | (search-forward "\n\n" nil t) | |
381 | (forward-line -1) | |
382 | (while (re-search-backward (concat "^" nnfolder-article-marker) nil t) | |
383 | (delete-region (point) (progn (forward-line 1) (point)))) | |
384 | (when nnmail-cache-accepted-message-ids | |
385 | (nnmail-cache-insert (nnmail-fetch-field "message-id"))) | |
386 | (setq result (if (stringp group) | |
387 | (list (cons group (nnfolder-active-number group))) | |
388 | (setq art-group | |
389 | (nnmail-article-group 'nnfolder-active-number)))) | |
390 | (if (and (null result) | |
391 | (yes-or-no-p "Moved to `junk' group; delete article? ")) | |
392 | (setq result 'junk) | |
393 | (setq result | |
394 | (car (nnfolder-save-mail result))))) | |
395 | (when last | |
396 | (save-excursion | |
397 | (nnfolder-possibly-change-folder (or (caar art-group) group)) | |
398 | (nnfolder-save-buffer) | |
399 | (when nnmail-cache-accepted-message-ids | |
400 | (nnmail-cache-close))))) | |
401 | (nnmail-save-active nnfolder-group-alist nnfolder-active-file) | |
402 | (unless result | |
403 | (nnheader-report 'nnfolder "Couldn't store article")) | |
404 | result)) | |
405 | ||
406 | (deffoo nnfolder-request-replace-article (article group buffer) | |
407 | (nnfolder-possibly-change-group group) | |
408 | (save-excursion | |
409 | (set-buffer nnfolder-current-buffer) | |
410 | (goto-char (point-min)) | |
411 | (if (not (search-forward (nnfolder-article-string article) nil t)) | |
412 | nil | |
413 | (nnfolder-delete-mail t t) | |
414 | (insert-buffer-substring buffer) | |
415 | (nnfolder-save-buffer) | |
416 | t))) | |
417 | ||
418 | (deffoo nnfolder-request-delete-group (group &optional force server) | |
419 | (nnfolder-close-group group server t) | |
420 | ;; Delete all articles in GROUP. | |
421 | (if (not force) | |
422 | () ; Don't delete the articles. | |
423 | ;; Delete the file that holds the group. | |
424 | (ignore-errors | |
425 | (delete-file (nnfolder-group-pathname group)))) | |
426 | ;; Remove the group from all structures. | |
427 | (setq nnfolder-group-alist | |
428 | (delq (assoc group nnfolder-group-alist) nnfolder-group-alist) | |
429 | nnfolder-current-group nil | |
430 | nnfolder-current-buffer nil) | |
431 | ;; Save the active file. | |
432 | (nnmail-save-active nnfolder-group-alist nnfolder-active-file) | |
433 | t) | |
434 | ||
435 | (deffoo nnfolder-request-rename-group (group new-name &optional server) | |
436 | (nnfolder-possibly-change-group group server) | |
437 | (save-excursion | |
438 | (set-buffer nnfolder-current-buffer) | |
439 | (and (file-writable-p buffer-file-name) | |
440 | (ignore-errors | |
441 | (rename-file | |
442 | buffer-file-name | |
443 | (nnfolder-group-pathname new-name)) | |
444 | t) | |
445 | ;; That went ok, so we change the internal structures. | |
446 | (let ((entry (assoc group nnfolder-group-alist))) | |
447 | (and entry (setcar entry new-name)) | |
448 | (setq nnfolder-current-buffer nil | |
449 | nnfolder-current-group nil) | |
450 | ;; Save the new group alist. | |
451 | (nnmail-save-active nnfolder-group-alist nnfolder-active-file) | |
452 | ;; We kill the buffer instead of renaming it and stuff. | |
453 | (kill-buffer (current-buffer)) | |
454 | t)))) | |
455 | ||
a8151ef7 LMI |
456 | (defun nnfolder-request-regenerate (server) |
457 | (nnfolder-possibly-change-group nil server) | |
458 | (nnfolder-generate-active-file) | |
459 | t) | |
460 | ||
eec82323 LMI |
461 | \f |
462 | ;;; Internal functions. | |
463 | ||
464 | (defun nnfolder-adjust-min-active (group) | |
465 | ;; Find the lowest active article in this group. | |
466 | (let* ((active (cadr (assoc group nnfolder-group-alist))) | |
467 | (marker (concat "\n" nnfolder-article-marker)) | |
468 | (number "[0-9]+") | |
469 | (activemin (cdr active))) | |
470 | (save-excursion | |
471 | (set-buffer nnfolder-current-buffer) | |
472 | (goto-char (point-min)) | |
473 | (while (and (search-forward marker nil t) | |
474 | (re-search-forward number nil t)) | |
475 | (setq activemin (min activemin | |
476 | (string-to-number (buffer-substring | |
477 | (match-beginning 0) | |
478 | (match-end 0)))))) | |
479 | (setcar active activemin)))) | |
480 | ||
481 | (defun nnfolder-article-string (article) | |
482 | (if (numberp article) | |
483 | (concat "\n" nnfolder-article-marker (int-to-string article) " ") | |
484 | (concat "\nMessage-ID: " article))) | |
485 | ||
486 | (defun nnfolder-delete-mail (&optional force leave-delim) | |
487 | "Delete the message that point is in." | |
488 | (save-excursion | |
489 | (delete-region | |
490 | (save-excursion | |
491 | (nnmail-search-unix-mail-delim-backward) | |
492 | (if leave-delim (progn (forward-line 1) (point)) | |
493 | (point))) | |
494 | (progn | |
495 | (forward-line 1) | |
496 | (if (nnmail-search-unix-mail-delim) | |
497 | (if (and (not (bobp)) leave-delim) | |
498 | (progn (forward-line -2) (point)) | |
499 | (point)) | |
500 | (point-max)))))) | |
501 | ||
502 | (defun nnfolder-possibly-change-group (group &optional server dont-check) | |
503 | ;; Change servers. | |
504 | (when (and server | |
505 | (not (nnfolder-server-opened server))) | |
506 | (nnfolder-open-server server)) | |
507 | (unless (gnus-buffer-live-p nnfolder-current-buffer) | |
508 | (setq nnfolder-current-buffer nil | |
509 | nnfolder-current-group nil)) | |
510 | ;; Change group. | |
511 | (when (and group | |
512 | (not (equal group nnfolder-current-group))) | |
ddcfd8de KH |
513 | (let ((file-name-coding-system 'binary) |
514 | (pathname-coding-system 'binary)) | |
58724016 KH |
515 | (nnmail-activate 'nnfolder) |
516 | (when (and (not (assoc group nnfolder-group-alist)) | |
517 | (not (file-exists-p | |
518 | (nnfolder-group-pathname group)))) | |
519 | ;; The group doesn't exist, so we create a new entry for it. | |
520 | (push (list group (cons 1 0)) nnfolder-group-alist) | |
521 | (nnmail-save-active nnfolder-group-alist nnfolder-active-file)) | |
a8151ef7 | 522 | |
58724016 | 523 | (if dont-check |
a8151ef7 LMI |
524 | (setq nnfolder-current-group group |
525 | nnfolder-current-buffer nil) | |
58724016 KH |
526 | (let (inf file) |
527 | ;; If we have to change groups, see if we don't already have the | |
528 | ;; folder in memory. If we do, verify the modtime and destroy | |
529 | ;; the folder if needed so we can rescan it. | |
a8151ef7 LMI |
530 | (setq nnfolder-current-buffer |
531 | (nth 1 (assoc group nnfolder-buffer-alist))) | |
532 | ||
58724016 KH |
533 | ;; If the buffer is not live, make sure it isn't in the alist. If it |
534 | ;; is live, verify that nobody else has touched the file since last | |
535 | ;; time. | |
536 | (when (and nnfolder-current-buffer | |
537 | (not (gnus-buffer-live-p nnfolder-current-buffer))) | |
538 | (setq nnfolder-buffer-alist (delq inf nnfolder-buffer-alist) | |
539 | nnfolder-current-buffer nil)) | |
a8151ef7 | 540 | |
58724016 | 541 | (setq nnfolder-current-group group) |
a8151ef7 | 542 | |
58724016 KH |
543 | (when (or (not nnfolder-current-buffer) |
544 | (not (verify-visited-file-modtime nnfolder-current-buffer))) | |
545 | (save-excursion | |
546 | (setq file (nnfolder-group-pathname group)) | |
547 | ;; See whether we need to create the new file. | |
548 | (unless (file-exists-p file) | |
549 | (gnus-make-directory (file-name-directory file)) | |
550 | (nnmail-write-region 1 1 file t 'nomesg)) | |
551 | (when (setq nnfolder-current-buffer (nnfolder-read-folder group)) | |
552 | (set-buffer nnfolder-current-buffer) | |
553 | (push (list group nnfolder-current-buffer) | |
554 | nnfolder-buffer-alist))))))))) | |
eec82323 LMI |
555 | |
556 | (defun nnfolder-save-mail (group-art-list) | |
557 | "Called narrowed to an article." | |
558 | (let* (save-list group-art) | |
559 | (goto-char (point-min)) | |
560 | ;; The From line may have been quoted by movemail. | |
561 | (when (looking-at (concat ">" message-unix-mail-delimiter)) | |
562 | (delete-char 1)) | |
563 | ;; This might come from somewhere else. | |
564 | (unless (looking-at message-unix-mail-delimiter) | |
565 | (insert "From nobody " (current-time-string) "\n") | |
566 | (goto-char (point-min))) | |
567 | ;; Quote all "From " lines in the article. | |
568 | (forward-line 1) | |
569 | (let (case-fold-search) | |
570 | (while (re-search-forward "^From " nil t) | |
571 | (beginning-of-line) | |
572 | (insert "> "))) | |
573 | (setq save-list group-art-list) | |
574 | (nnmail-insert-lines) | |
575 | (nnmail-insert-xref group-art-list) | |
576 | (run-hooks 'nnmail-prepare-save-mail-hook) | |
577 | (run-hooks 'nnfolder-prepare-save-mail-hook) | |
578 | ||
579 | ;; Insert the mail into each of the destination groups. | |
580 | (while (setq group-art (pop group-art-list)) | |
581 | ;; Kill any previous newsgroup markers. | |
582 | (goto-char (point-min)) | |
583 | (search-forward "\n\n" nil t) | |
584 | (forward-line -1) | |
585 | (while (search-backward (concat "\n" nnfolder-article-marker) nil t) | |
586 | (delete-region (1+ (point)) (progn (forward-line 2) (point)))) | |
587 | ||
588 | ;; Insert the new newsgroup marker. | |
589 | (nnfolder-insert-newsgroup-line group-art) | |
590 | ||
591 | (save-excursion | |
592 | (let ((beg (point-min)) | |
593 | (end (point-max)) | |
594 | (obuf (current-buffer))) | |
595 | (nnfolder-possibly-change-folder (car group-art)) | |
596 | (let ((buffer-read-only nil)) | |
597 | (goto-char (point-max)) | |
598 | (unless (eolp) | |
599 | (insert "\n")) | |
600 | (unless (bobp) | |
601 | (insert "\n")) | |
602 | (insert-buffer-substring obuf beg end))))) | |
603 | ||
604 | ;; Did we save it anywhere? | |
605 | save-list)) | |
606 | ||
607 | (defun nnfolder-insert-newsgroup-line (group-art) | |
608 | (save-excursion | |
609 | (goto-char (point-min)) | |
610 | (when (search-forward "\n\n" nil t) | |
611 | (forward-char -1) | |
612 | (insert (format (concat nnfolder-article-marker "%d %s\n") | |
613 | (cdr group-art) (current-time-string)))))) | |
614 | ||
615 | (defun nnfolder-active-number (group) | |
616 | ;; Find the next article number in GROUP. | |
617 | (let ((active (cadr (assoc group nnfolder-group-alist)))) | |
618 | (if active | |
619 | (setcdr active (1+ (cdr active))) | |
620 | ;; This group is new, so we create a new entry for it. | |
621 | ;; This might be a bit naughty... creating groups on the drop of | |
622 | ;; a hat, but I don't know... | |
623 | (push (list group (setq active (cons 1 1))) | |
624 | nnfolder-group-alist)) | |
625 | (cdr active))) | |
626 | ||
627 | (defun nnfolder-possibly-change-folder (group) | |
628 | (let ((inf (assoc group nnfolder-buffer-alist))) | |
629 | (if (and inf | |
630 | (gnus-buffer-live-p (cadr inf))) | |
631 | (set-buffer (cadr inf)) | |
632 | (when inf | |
633 | (setq nnfolder-buffer-alist (delq inf nnfolder-buffer-alist))) | |
634 | (when nnfolder-group-alist | |
635 | (nnmail-save-active nnfolder-group-alist nnfolder-active-file)) | |
636 | (push (list group (nnfolder-read-folder group)) | |
637 | nnfolder-buffer-alist)))) | |
638 | ||
639 | ;; This method has a problem if you've accidentally let the active list get | |
640 | ;; out of sync with the files. This could happen, say, if you've | |
641 | ;; accidentally gotten new mail with something other than Gnus (but why | |
642 | ;; would _that_ ever happen? :-). In that case, we will be in the middle of | |
643 | ;; processing the file, ready to add new X-Gnus article number markers, and | |
644 | ;; we'll run across a message with no ID yet - the active list _may_not_ be | |
645 | ;; ready for us yet. | |
646 | ||
647 | ;; To handle this, I'm modifying this routine to maintain the maximum ID seen | |
648 | ;; so far, and when we hit a message with no ID, we will _manually_ scan the | |
649 | ;; rest of the message looking for any more, possibly higher IDs. We'll | |
650 | ;; assume the maximum that we find is the highest active. Note that this | |
651 | ;; shouldn't cost us much extra time at all, but will be a lot less | |
652 | ;; vulnerable to glitches between the mbox and the active file. | |
653 | ||
654 | (defun nnfolder-read-folder (group) | |
655 | (let* ((file (nnfolder-group-pathname group)) | |
656 | (buffer (set-buffer (nnheader-find-file-noselect file)))) | |
657 | (if (equal (cadr (assoc group nnfolder-scantime-alist)) | |
658 | (nth 5 (file-attributes file))) | |
659 | ;; This looks up-to-date, so we don't do any scanning. | |
660 | buffer | |
661 | ;; Parse the damn thing. | |
662 | (save-excursion | |
663 | (nnmail-activate 'nnfolder) | |
664 | ;; Read in the file. | |
665 | (let ((delim (concat "^" message-unix-mail-delimiter)) | |
666 | (marker (concat "\n" nnfolder-article-marker)) | |
667 | (number "[0-9]+") | |
668 | (active (or (cadr (assoc group nnfolder-group-alist)) | |
669 | (cons 1 0))) | |
670 | (scantime (assoc group nnfolder-scantime-alist)) | |
671 | (minid (lsh -1 -1)) | |
672 | maxid start end newscantime | |
673 | buffer-read-only) | |
674 | (buffer-disable-undo (current-buffer)) | |
675 | (setq maxid (cdr active)) | |
676 | (goto-char (point-min)) | |
677 | ||
678 | ;; Anytime the active number is 1 or 0, it is suspect. In that | |
679 | ;; case, search the file manually to find the active number. Or, | |
680 | ;; of course, if we're being paranoid. (This would also be the | |
681 | ;; place to build other lists from the header markers, such as | |
682 | ;; expunge lists, etc., if we ever desired to abandon the active | |
683 | ;; file entirely for mboxes.) | |
684 | (when (or nnfolder-ignore-active-file | |
685 | (< maxid 2)) | |
686 | (while (and (search-forward marker nil t) | |
687 | (re-search-forward number nil t)) | |
688 | (let ((newnum (string-to-number (match-string 0)))) | |
689 | (setq maxid (max maxid newnum)) | |
690 | (setq minid (min minid newnum)))) | |
691 | (setcar active (max 1 (min minid maxid))) | |
692 | (setcdr active (max maxid (cdr active))) | |
693 | (goto-char (point-min))) | |
694 | ||
695 | ;; As long as we trust that the user will only insert unmarked mail | |
696 | ;; at the end, go to the end and search backwards for the last | |
697 | ;; marker. Find the start of that message, and begin to search for | |
698 | ;; unmarked messages from there. | |
699 | (when (not (or nnfolder-distrust-mbox | |
700 | (< maxid 2))) | |
701 | (goto-char (point-max)) | |
702 | (unless (re-search-backward marker nil t) | |
703 | (goto-char (point-min))) | |
704 | (when (nnmail-search-unix-mail-delim) | |
705 | (goto-char (point-min)))) | |
706 | ||
707 | ;; Keep track of the active number on our own, and insert it back | |
708 | ;; into the active list when we're done. Also, prime the pump to | |
709 | ;; cut down on the number of searches we do. | |
710 | (unless (nnmail-search-unix-mail-delim) | |
711 | (goto-char (point-max))) | |
712 | (setq end (point-marker)) | |
713 | (while (not (= end (point-max))) | |
714 | (setq start (marker-position end)) | |
715 | (goto-char end) | |
716 | ;; There may be more than one "From " line, so we skip past | |
717 | ;; them. | |
718 | (while (looking-at delim) | |
719 | (forward-line 1)) | |
720 | (set-marker end (if (nnmail-search-unix-mail-delim) | |
721 | (point) | |
722 | (point-max))) | |
723 | (goto-char start) | |
724 | (when (not (search-forward marker end t)) | |
725 | (narrow-to-region start end) | |
726 | (nnmail-insert-lines) | |
727 | (nnfolder-insert-newsgroup-line | |
728 | (cons nil (nnfolder-active-number nnfolder-current-group))) | |
729 | (widen))) | |
730 | ||
731 | (set-marker end nil) | |
732 | ;; Make absolutely sure that the active list reflects reality! | |
733 | (nnmail-save-active nnfolder-group-alist nnfolder-active-file) | |
734 | ;; Set the scantime for this group. | |
735 | (setq newscantime (visited-file-modtime)) | |
736 | (if scantime | |
737 | (setcdr scantime (list newscantime)) | |
738 | (push (list nnfolder-current-group newscantime) | |
739 | nnfolder-scantime-alist)) | |
740 | (current-buffer)))))) | |
741 | ||
742 | ;;;###autoload | |
743 | (defun nnfolder-generate-active-file () | |
744 | "Look for mbox folders in the nnfolder directory and make them into groups." | |
745 | (interactive) | |
746 | (nnmail-activate 'nnfolder) | |
747 | (let ((files (directory-files nnfolder-directory)) | |
748 | file) | |
749 | (while (setq file (pop files)) | |
750 | (when (and (not (backup-file-name-p file)) | |
751 | (message-mail-file-mbox-p | |
752 | (nnheader-concat nnfolder-directory file))) | |
753 | (let ((oldgroup (assoc file nnfolder-group-alist))) | |
754 | (if oldgroup | |
755 | (nnheader-message 5 "Refreshing group %s..." file) | |
756 | (nnheader-message 5 "Adding group %s..." file)) | |
03378294 RS |
757 | (if oldgroup |
758 | (setq nnfolder-group-alist | |
759 | (delq oldgroup (copy-sequence nnfolder-group-alist)))) | |
eec82323 LMI |
760 | (push (list file (cons 1 0)) nnfolder-group-alist) |
761 | (nnfolder-possibly-change-folder file) | |
762 | (nnfolder-possibly-change-group file) | |
763 | (nnfolder-close-group file)))) | |
764 | (message ""))) | |
765 | ||
766 | (defun nnfolder-group-pathname (group) | |
767 | "Make pathname for GROUP." | |
a8151ef7 | 768 | (setq group (gnus-encode-coding-string group nnmail-pathname-coding-system)) |
eec82323 LMI |
769 | (let ((dir (file-name-as-directory (expand-file-name nnfolder-directory)))) |
770 | ;; If this file exists, we use it directly. | |
771 | (if (or nnmail-use-long-file-names | |
772 | (file-exists-p (concat dir group))) | |
773 | (concat dir group) | |
774 | ;; If not, we translate dots into slashes. | |
775 | (concat dir (nnheader-replace-chars-in-string group ?. ?/))))) | |
776 | ||
777 | (defun nnfolder-save-buffer () | |
778 | "Save the buffer." | |
779 | (when (buffer-modified-p) | |
780 | (run-hooks 'nnfolder-save-buffer-hook) | |
a8151ef7 | 781 | (gnus-make-directory (file-name-directory (buffer-file-name))) |
eec82323 LMI |
782 | (save-buffer))) |
783 | ||
784 | (provide 'nnfolder) | |
785 | ||
786 | ;;; nnfolder.el ends here |