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