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41487370 LMI |
1 | ;;; nnmbox.el --- mail mbox access for Gnus |
2 | ;; Copyright (C) 1995 Free Software Foundation, Inc. | |
3 | ||
4 | ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no> | |
5 | ;; Masanobu UMEDA <umerin@flab.flab.fujitsu.junet> | |
6 | ;; Keywords: news, mail | |
7 | ||
8 | ;; This file is part of GNU Emacs. | |
9 | ||
10 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
11 | ;; it under the terms of the GNU General Public License as published by | |
12 | ;; the Free Software Foundation; either version 2, or (at your option) | |
13 | ;; any later version. | |
14 | ||
15 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
19 | ||
20 | ;; You should have received a copy of the GNU General Public License | |
21 | ;; along with GNU Emacs; see the file COPYING. If not, write to | |
22 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
23 | ||
24 | ;;; Commentary: | |
25 | ||
26 | ;; For an overview of what the interface functions do, please see the | |
27 | ;; Gnus sources. | |
28 | ||
29 | ;;; Code: | |
30 | ||
31 | (require 'nnheader) | |
32 | (require 'rmail) | |
33 | (require 'nnmail) | |
34 | ||
35 | (defvar nnmbox-mbox-file (expand-file-name "~/mbox") | |
36 | "The name of the mail box file in the user's home directory.") | |
37 | ||
38 | (defvar nnmbox-active-file (expand-file-name "~/.mbox-active") | |
39 | "The name of the active file for the mail box.") | |
40 | ||
41 | (defvar nnmbox-get-new-mail t | |
42 | "If non-nil, nnmbox will check the incoming mail file and split the mail.") | |
43 | ||
44 | (defvar nnmbox-prepare-save-mail-hook nil | |
45 | "Hook run narrowed to an article before saving.") | |
46 | ||
47 | \f | |
48 | ||
49 | (defconst nnmbox-version "nnmbox 1.0" | |
50 | "nnmbox version.") | |
51 | ||
52 | (defvar nnmbox-current-group nil | |
53 | "Current nnmbox news group directory.") | |
54 | ||
55 | (defconst nnmbox-mbox-buffer nil) | |
56 | ||
57 | (defvar nnmbox-status-string "") | |
58 | ||
59 | (defvar nnmbox-group-alist nil) | |
60 | (defvar nnmbox-active-timestamp nil) | |
61 | ||
62 | \f | |
63 | ||
64 | (defvar nnmbox-current-server nil) | |
65 | (defvar nnmbox-server-alist nil) | |
66 | (defvar nnmbox-server-variables | |
67 | (list | |
68 | (list 'nnmbox-mbox-file nnmbox-mbox-file) | |
69 | (list 'nnmbox-active-file nnmbox-active-file) | |
70 | (list 'nnmbox-get-new-mail nnmbox-get-new-mail) | |
71 | '(nnmbox-current-group nil) | |
72 | '(nnmbox-status-string "") | |
73 | '(nnmbox-group-alist nil))) | |
74 | ||
75 | \f | |
76 | ||
77 | ;;; Interface functions | |
78 | ||
79 | (defun nnmbox-retrieve-headers (sequence &optional newsgroup server) | |
80 | (save-excursion | |
81 | (set-buffer nntp-server-buffer) | |
82 | (erase-buffer) | |
83 | (let ((number (length sequence)) | |
84 | (count 0) | |
85 | article art-string start stop) | |
86 | (nnmbox-possibly-change-newsgroup newsgroup) | |
87 | (if (stringp (car sequence)) | |
88 | 'headers | |
89 | (while sequence | |
90 | (setq article (car sequence)) | |
91 | (setq art-string (nnmbox-article-string article)) | |
92 | (set-buffer nnmbox-mbox-buffer) | |
93 | (if (or (search-forward art-string nil t) | |
94 | (progn (goto-char (point-min)) | |
95 | (search-forward art-string nil t))) | |
96 | (progn | |
97 | (setq start | |
98 | (save-excursion | |
99 | (re-search-backward | |
100 | (concat "^" rmail-unix-mail-delimiter) nil t) | |
101 | (point))) | |
102 | (search-forward "\n\n" nil t) | |
103 | (setq stop (1- (point))) | |
104 | (set-buffer nntp-server-buffer) | |
105 | (insert (format "221 %d Article retrieved.\n" article)) | |
106 | (insert-buffer-substring nnmbox-mbox-buffer start stop) | |
107 | (goto-char (point-max)) | |
108 | (insert ".\n"))) | |
109 | (setq sequence (cdr sequence)) | |
110 | (setq count (1+ count)) | |
111 | (and (numberp nnmail-large-newsgroup) | |
112 | (> number nnmail-large-newsgroup) | |
113 | (zerop (% count 20)) | |
114 | gnus-verbose-backends | |
115 | (message "nnmbox: Receiving headers... %d%%" | |
116 | (/ (* count 100) number)))) | |
117 | ||
118 | (and (numberp nnmail-large-newsgroup) | |
119 | (> number nnmail-large-newsgroup) | |
120 | gnus-verbose-backends | |
121 | (message "nnmbox: Receiving headers...done")) | |
122 | ||
123 | ;; Fold continuation lines. | |
124 | (set-buffer nntp-server-buffer) | |
125 | (goto-char (point-min)) | |
126 | (while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t) | |
127 | (replace-match " " t t)) | |
128 | 'headers)))) | |
129 | ||
130 | (defun nnmbox-open-server (server &optional defs) | |
131 | (nnheader-init-server-buffer) | |
132 | (if (equal server nnmbox-current-server) | |
133 | t | |
134 | (if nnmbox-current-server | |
135 | (setq nnmbox-server-alist | |
136 | (cons (list nnmbox-current-server | |
137 | (nnheader-save-variables nnmbox-server-variables)) | |
138 | nnmbox-server-alist))) | |
139 | (let ((state (assoc server nnmbox-server-alist))) | |
140 | (if state | |
141 | (progn | |
142 | (nnheader-restore-variables (nth 1 state)) | |
143 | (setq nnmbox-server-alist (delq state nnmbox-server-alist))) | |
144 | (nnheader-set-init-variables nnmbox-server-variables defs))) | |
145 | (setq nnmbox-current-server server))) | |
146 | ||
147 | (defun nnmbox-close-server (&optional server) | |
148 | t) | |
149 | ||
150 | (defun nnmbox-server-opened (&optional server) | |
151 | (and (equal server nnmbox-current-server) | |
152 | nnmbox-mbox-buffer | |
153 | (buffer-name nnmbox-mbox-buffer) | |
154 | nntp-server-buffer | |
155 | (buffer-name nntp-server-buffer))) | |
156 | ||
157 | (defun nnmbox-status-message (&optional server) | |
158 | nnmbox-status-string) | |
159 | ||
160 | (defun nnmbox-request-article (article &optional newsgroup server buffer) | |
161 | (nnmbox-possibly-change-newsgroup newsgroup) | |
162 | (if (stringp article) | |
163 | nil | |
164 | (save-excursion | |
165 | (set-buffer nnmbox-mbox-buffer) | |
166 | (goto-char (point-min)) | |
167 | (if (search-forward (nnmbox-article-string article) nil t) | |
168 | (let (start stop) | |
169 | (re-search-backward (concat "^" rmail-unix-mail-delimiter) nil t) | |
170 | (setq start (point)) | |
171 | (forward-line 1) | |
172 | (or (and (re-search-forward | |
173 | (concat "^" rmail-unix-mail-delimiter) nil t) | |
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 nnmbox-mbox-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 | t)))))) | |
187 | ||
188 | (defun nnmbox-request-group (group &optional server dont-check) | |
189 | (save-excursion | |
190 | (if (nnmbox-possibly-change-newsgroup group) | |
191 | (if dont-check | |
192 | t | |
193 | (nnmbox-get-new-mail group) | |
194 | (save-excursion | |
195 | (set-buffer nntp-server-buffer) | |
196 | (erase-buffer) | |
197 | (let ((active (assoc group nnmbox-group-alist))) | |
198 | (insert (format "211 %d %d %d %s\n" | |
199 | (1+ (- (cdr (car (cdr active))) | |
200 | (car (car (cdr active))))) | |
201 | (car (car (cdr active))) | |
202 | (cdr (car (cdr active))) | |
203 | (car active)))) | |
204 | t))))) | |
205 | ||
206 | (defun nnmbox-close-group (group &optional server) | |
207 | t) | |
208 | ||
209 | (defun nnmbox-request-list (&optional server) | |
210 | (if server (nnmbox-get-new-mail)) | |
211 | (save-excursion | |
212 | (or (nnmail-find-file nnmbox-active-file) | |
213 | (progn | |
214 | (setq nnmbox-group-alist (nnmail-get-active)) | |
215 | (nnmail-save-active nnmbox-group-alist nnmbox-active-file) | |
216 | (nnmail-find-file nnmbox-active-file))))) | |
217 | ||
218 | (defun nnmbox-request-newgroups (date &optional server) | |
219 | (nnmbox-request-list server)) | |
220 | ||
221 | (defun nnmbox-request-list-newsgroups (&optional server) | |
222 | (setq nnmbox-status-string "nnmbox: LIST NEWSGROUPS is not implemented.") | |
223 | nil) | |
224 | ||
225 | (defun nnmbox-request-post (&optional server) | |
226 | (mail-send-and-exit nil)) | |
227 | ||
228 | (defalias 'nnmbox-request-post-buffer 'nnmail-request-post-buffer) | |
229 | ||
230 | (defun nnmbox-request-expire-articles | |
231 | (articles newsgroup &optional server force) | |
232 | (nnmbox-possibly-change-newsgroup newsgroup) | |
233 | (let* ((days (or (and nnmail-expiry-wait-function | |
234 | (funcall nnmail-expiry-wait-function newsgroup)) | |
235 | nnmail-expiry-wait)) | |
236 | (is-old t) | |
237 | rest) | |
238 | (nnmail-activate 'nnmbox) | |
239 | ||
240 | (save-excursion | |
241 | (set-buffer nnmbox-mbox-buffer) | |
242 | (while (and articles is-old) | |
243 | (goto-char (point-min)) | |
244 | (if (search-forward (nnmbox-article-string (car articles)) nil t) | |
245 | (if (or force | |
246 | (setq is-old | |
247 | (> (nnmail-days-between | |
248 | (current-time-string) | |
249 | (buffer-substring | |
250 | (point) (progn (end-of-line) (point)))) | |
251 | days))) | |
252 | (progn | |
253 | (and gnus-verbose-backends | |
254 | (message "Deleting article %s..." (car articles))) | |
255 | (nnmbox-delete-mail)) | |
256 | (setq rest (cons (car articles) rest)))) | |
257 | (setq articles (cdr articles))) | |
258 | (save-buffer) | |
259 | ;; Find the lowest active article in this group. | |
260 | (let ((active (nth 1 (assoc newsgroup nnmbox-group-alist)))) | |
261 | (goto-char (point-min)) | |
262 | (while (and (not (search-forward | |
263 | (nnmbox-article-string (car active)) nil t)) | |
264 | (<= (car active) (cdr active))) | |
265 | (setcar active (1+ (car active))) | |
266 | (goto-char (point-min)))) | |
267 | (nnmail-save-active nnmbox-group-alist nnmbox-active-file) | |
268 | (nconc rest articles)))) | |
269 | ||
270 | (defun nnmbox-request-move-article | |
271 | (article group server accept-form &optional last) | |
272 | (nnmbox-possibly-change-newsgroup group) | |
273 | (let ((buf (get-buffer-create " *nnmbox move*")) | |
274 | result) | |
275 | (and | |
276 | (nnmbox-request-article article group server) | |
277 | (save-excursion | |
278 | (set-buffer buf) | |
279 | (buffer-disable-undo (current-buffer)) | |
280 | (erase-buffer) | |
281 | (insert-buffer-substring nntp-server-buffer) | |
282 | (goto-char (point-min)) | |
283 | (while (re-search-forward | |
284 | "^X-Gnus-Newsgroup:" | |
285 | (save-excursion (search-forward "\n\n" nil t) (point)) t) | |
286 | (delete-region (progn (beginning-of-line) (point)) | |
287 | (progn (forward-line 1) (point)))) | |
288 | (setq result (eval accept-form)) | |
289 | (kill-buffer buf) | |
290 | result) | |
291 | (save-excursion | |
292 | (set-buffer nnmbox-mbox-buffer) | |
293 | (goto-char (point-min)) | |
294 | (if (search-forward (nnmbox-article-string article) nil t) | |
295 | (nnmbox-delete-mail)) | |
296 | (and last (save-buffer)))) | |
297 | result)) | |
298 | ||
299 | (defun nnmbox-request-accept-article (group &optional last) | |
300 | (let ((buf (current-buffer)) | |
301 | result) | |
302 | (goto-char (point-min)) | |
303 | (if (looking-at "X-From-Line: ") | |
304 | (replace-match "From ") | |
305 | (insert "From nobody " (current-time-string) "\n")) | |
306 | (and | |
307 | (nnmail-activate 'nnmbox) | |
308 | (progn | |
309 | (set-buffer buf) | |
310 | (goto-char (point-min)) | |
311 | (search-forward "\n\n" nil t) | |
312 | (forward-line -1) | |
313 | (while (re-search-backward "^X-Gnus-Newsgroup: " nil t) | |
314 | (delete-region (point) (progn (forward-line 1) (point)))) | |
315 | (setq result (nnmbox-save-mail (and (stringp group) group)))) | |
316 | (save-excursion | |
317 | (set-buffer nnmbox-mbox-buffer) | |
318 | (insert-buffer-substring buf) | |
319 | (and last (save-buffer)) | |
320 | result) | |
321 | (nnmail-save-active nnmbox-group-alist nnmbox-active-file)) | |
322 | (car result))) | |
323 | ||
324 | (defun nnmbox-request-replace-article (article group buffer) | |
325 | (nnmbox-possibly-change-newsgroup group) | |
326 | (save-excursion | |
327 | (set-buffer nnmbox-mbox-buffer) | |
328 | (goto-char (point-min)) | |
329 | (if (not (search-forward (nnmbox-article-string article) nil t)) | |
330 | nil | |
331 | (nnmbox-delete-mail t t) | |
332 | (insert-buffer-substring buffer) | |
333 | (save-buffer) | |
334 | t))) | |
335 | ||
336 | \f | |
337 | ;;; Internal functions. | |
338 | ||
339 | ;; If FORCE, delete article no matter how many X-Gnus-Newsgroup | |
340 | ;; headers there are. If LEAVE-DELIM, don't delete the Unix mbox | |
341 | ;; delimeter line. | |
342 | (defun nnmbox-delete-mail (&optional force leave-delim) | |
343 | ;; Delete the current X-Gnus-Newsgroup line. | |
344 | (or force | |
345 | (delete-region | |
346 | (progn (beginning-of-line) (point)) | |
347 | (progn (forward-line 1) (point)))) | |
348 | ;; Beginning of the article. | |
349 | (save-excursion | |
350 | (save-restriction | |
351 | (narrow-to-region | |
352 | (save-excursion | |
353 | (re-search-backward (concat "^" rmail-unix-mail-delimiter) nil t) | |
354 | (if leave-delim (progn (forward-line 1) (point)) | |
355 | (match-beginning 0))) | |
356 | (progn | |
357 | (forward-line 1) | |
358 | (or (and (re-search-forward (concat "^" rmail-unix-mail-delimiter) | |
359 | nil t) | |
360 | (if (and (not (bobp)) leave-delim) | |
361 | (progn (forward-line -2) (point)) | |
362 | (match-beginning 0))) | |
363 | (point-max)))) | |
364 | (goto-char (point-min)) | |
365 | ;; Only delete the article if no other groups owns it as well. | |
366 | (if (or force (not (re-search-forward "^X-Gnus-Newsgroup: " nil t))) | |
367 | (delete-region (point-min) (point-max)))))) | |
368 | ||
369 | (defun nnmbox-possibly-change-newsgroup (newsgroup) | |
370 | (if (or (not nnmbox-mbox-buffer) | |
371 | (not (buffer-name nnmbox-mbox-buffer))) | |
372 | (save-excursion | |
373 | (set-buffer (setq nnmbox-mbox-buffer | |
374 | (nnheader-find-file-noselect | |
375 | nnmbox-mbox-file nil 'raw))) | |
376 | (buffer-disable-undo (current-buffer)))) | |
377 | (if (not nnmbox-group-alist) | |
378 | (nnmail-activate 'nnmbox)) | |
379 | (if newsgroup | |
380 | (if (assoc newsgroup nnmbox-group-alist) | |
381 | (setq nnmbox-current-group newsgroup)))) | |
382 | ||
383 | (defun nnmbox-article-string (article) | |
384 | (concat "\nX-Gnus-Newsgroup: " nnmbox-current-group ":" | |
385 | (int-to-string article) " ")) | |
386 | ||
387 | (defun nnmbox-save-mail (&optional group) | |
388 | "Called narrowed to an article." | |
389 | (let* ((nnmail-split-methods | |
390 | (if group (list (list group "")) nnmail-split-methods)) | |
391 | (group-art (nreverse (nnmail-article-group 'nnmbox-active-number)))) | |
392 | (nnmail-insert-lines) | |
393 | (nnmail-insert-xref group-art) | |
394 | (nnmbox-insert-newsgroup-line group-art) | |
395 | (run-hooks 'nnml-prepare-save-mail-hook) | |
396 | group-art)) | |
397 | ||
398 | (defun nnmbox-insert-newsgroup-line (group-art) | |
399 | (save-excursion | |
400 | (goto-char (point-min)) | |
401 | (if (search-forward "\n\n" nil t) | |
402 | (progn | |
403 | (forward-char -1) | |
404 | (while group-art | |
405 | (insert (format "X-Gnus-Newsgroup: %s:%d %s\n" | |
406 | (car (car group-art)) (cdr (car group-art)) | |
407 | (current-time-string))) | |
408 | (setq group-art (cdr group-art))))) | |
409 | t)) | |
410 | ||
411 | (defun nnmbox-active-number (group) | |
412 | ;; Find the next article number in GROUP. | |
413 | (let ((active (car (cdr (assoc group nnmbox-group-alist))))) | |
414 | (if active | |
415 | (setcdr active (1+ (cdr active))) | |
416 | ;; This group is new, so we create a new entry for it. | |
417 | ;; This might be a bit naughty... creating groups on the drop of | |
418 | ;; a hat, but I don't know... | |
419 | (setq nnmbox-group-alist (cons (list group (setq active (cons 1 1))) | |
420 | nnmbox-group-alist))) | |
421 | (cdr active))) | |
422 | ||
423 | (defun nnmbox-read-mbox () | |
424 | (nnmail-activate 'nnmbox) | |
425 | (if (not (file-exists-p nnmbox-mbox-file)) | |
426 | (write-region 1 1 nnmbox-mbox-file t 'nomesg)) | |
427 | (if (and nnmbox-mbox-buffer | |
428 | (buffer-name nnmbox-mbox-buffer) | |
429 | (save-excursion | |
430 | (set-buffer nnmbox-mbox-buffer) | |
431 | (= (buffer-size) (nth 7 (file-attributes nnmbox-mbox-file))))) | |
432 | () | |
433 | (save-excursion | |
434 | (let ((delim (concat "^" rmail-unix-mail-delimiter)) | |
435 | start end) | |
436 | (set-buffer (setq nnmbox-mbox-buffer | |
437 | (nnheader-find-file-noselect | |
438 | nnmbox-mbox-file nil 'raw))) | |
439 | (buffer-disable-undo (current-buffer)) | |
440 | (goto-char (point-min)) | |
441 | (while (re-search-forward delim nil t) | |
442 | (setq start (match-beginning 0)) | |
443 | (if (not (search-forward "\nX-Gnus-Newsgroup: " | |
444 | (save-excursion | |
445 | (setq end | |
446 | (or | |
447 | (and | |
448 | (re-search-forward delim nil t) | |
449 | (match-beginning 0)) | |
450 | (point-max)))) | |
451 | t)) | |
452 | (save-excursion | |
453 | (save-restriction | |
454 | (narrow-to-region start end) | |
455 | (nnmbox-save-mail)))) | |
456 | (goto-char end)))))) | |
457 | ||
458 | (defun nnmbox-get-new-mail (&optional group) | |
459 | "Read new incoming mail." | |
460 | (let* ((spools (nnmail-get-spool-files group)) | |
461 | (group-in group) | |
462 | incoming incomings) | |
463 | (nnmbox-read-mbox) | |
464 | (if (or (not nnmbox-get-new-mail) (not nnmail-spool-file)) | |
465 | () | |
466 | ;; We go through all the existing spool files and split the | |
467 | ;; mail from each. | |
468 | (while spools | |
469 | (and | |
470 | (file-exists-p (car spools)) | |
471 | (> (nth 7 (file-attributes (car spools))) 0) | |
472 | (progn | |
473 | (and gnus-verbose-backends | |
474 | (message "nnmbox: Reading incoming mail...")) | |
475 | (if (not (setq incoming | |
476 | (nnmail-move-inbox | |
477 | (car spools) | |
478 | (concat nnmbox-mbox-file "-Incoming")))) | |
479 | () | |
480 | (setq incomings (cons incoming incomings)) | |
481 | (save-excursion | |
482 | (setq group (nnmail-get-split-group (car spools) group-in)) | |
483 | (let ((in-buf (nnmail-split-incoming | |
484 | incoming 'nnmbox-save-mail t group))) | |
485 | (set-buffer nnmbox-mbox-buffer) | |
486 | (goto-char (point-max)) | |
487 | (insert-buffer-substring in-buf) | |
488 | (kill-buffer in-buf)))))) | |
489 | (setq spools (cdr spools))) | |
490 | ;; If we did indeed read any incoming spools, we save all info. | |
491 | (and (buffer-modified-p nnmbox-mbox-buffer) | |
492 | (save-excursion | |
493 | (nnmail-save-active nnmbox-group-alist nnmbox-active-file) | |
494 | (set-buffer nnmbox-mbox-buffer) | |
495 | (save-buffer))) | |
496 | (if incomings (run-hooks 'nnmail-read-incoming-hook)) | |
497 | (while incomings | |
498 | (setq incoming (car incomings)) | |
499 | (and nnmail-delete-incoming | |
500 | (file-exists-p incoming) | |
501 | (file-writable-p incoming) | |
502 | (delete-file incoming)) | |
503 | (setq incomings (cdr incomings)))))) | |
504 | ||
505 | ||
506 | (provide 'nnmbox) | |
507 | ||
508 | ;;; nnmbox.el ends here |