1 ;;; nnbabyl.el --- rmail mbox access for Gnus
3 ;; Copyright (C) 1995, 1996, 1997, 1998, 1099, 2000, 2001
4 ;; Free Software Foundation, Inc.
6 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
7 ;; Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
8 ;; Keywords: news, mail
10 ;; This file is part of GNU Emacs.
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)
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.
22 ;; You should have received a copy of the GNU General Public License
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.
29 ;; For an overview of what the interface functions do, please see the
38 5 "Ignore rmail errors from this file, you don't have rmail")))
41 (eval-when-compile (require 'cl))
43 (nnoo-declare nnbabyl)
45 (defvoo nnbabyl-mbox-file (expand-file-name "~/RMAIL")
46 "The name of the rmail box file in the users home directory.")
48 (defvoo nnbabyl-active-file (expand-file-name "~/.rmail-active")
49 "The name of the active file for the rmail box.")
51 (defvoo nnbabyl-get-new-mail t
52 "If non-nil, nnbabyl will check the incoming mail file and split the mail.")
55 (defvoo nnbabyl-prepare-save-mail-hook nil
56 "Hook run narrowed to an article before saving.")
60 (defvar nnbabyl-mail-delimiter "\^_")
62 (defconst nnbabyl-version "nnbabyl 1.0"
65 (defvoo nnbabyl-mbox-buffer nil)
66 (defvoo nnbabyl-current-group nil)
67 (defvoo nnbabyl-status-string "")
68 (defvoo nnbabyl-group-alist nil)
69 (defvoo nnbabyl-active-timestamp nil)
71 (defvoo nnbabyl-previous-buffer-mode nil)
74 (autoload 'gnus-set-text-properties "gnus-ems"))
78 ;;; Interface functions
80 (nnoo-define-basics nnbabyl)
82 (deffoo nnbabyl-retrieve-headers (articles &optional group server fetch-old)
84 (set-buffer nntp-server-buffer)
86 (let ((number (length articles))
88 (delim (concat "^" nnbabyl-mail-delimiter))
89 article art-string start stop)
90 (nnbabyl-possibly-change-newsgroup group server)
91 (while (setq article (pop articles))
92 (setq art-string (nnbabyl-article-string article))
93 (set-buffer nnbabyl-mbox-buffer)
95 (when (or (search-forward art-string nil t)
96 (search-backward art-string nil t))
97 (unless (re-search-backward delim nil t)
98 (goto-char (point-min)))
99 (while (and (not (looking-at ".+:"))
100 (zerop (forward-line 1))))
102 (search-forward "\n\n" nil t)
103 (setq stop (1- (point)))
104 (set-buffer nntp-server-buffer)
106 (princ article (current-buffer))
107 (insert " Article retrieved.\n")
108 (insert-buffer-substring nnbabyl-mbox-buffer start stop)
109 (goto-char (point-max))
111 (and (numberp nnmail-large-newsgroup)
112 (> number nnmail-large-newsgroup)
113 (zerop (% (incf count) 20))
114 (nnheader-message 5 "nnbabyl: Receiving headers... %d%%"
115 (/ (* count 100) number))))
117 (and (numberp nnmail-large-newsgroup)
118 (> number nnmail-large-newsgroup)
119 (nnheader-message 5 "nnbabyl: Receiving headers...done"))
121 (set-buffer nntp-server-buffer)
122 (nnheader-fold-continuation-lines)
125 (deffoo nnbabyl-open-server (server &optional defs)
126 (nnoo-change-server 'nnbabyl server defs)
127 (nnbabyl-create-mbox)
129 ((not (file-exists-p nnbabyl-mbox-file))
130 (nnbabyl-close-server)
131 (nnheader-report 'nnbabyl "No such file: %s" nnbabyl-mbox-file))
132 ((file-directory-p nnbabyl-mbox-file)
133 (nnbabyl-close-server)
134 (nnheader-report 'nnbabyl "Not a regular file: %s" nnbabyl-mbox-file))
136 (nnheader-report 'nnbabyl "Opened server %s using mbox %s" server
140 (deffoo nnbabyl-close-server (&optional server)
141 ;; Restore buffer mode.
142 (when (and (nnbabyl-server-opened)
143 nnbabyl-previous-buffer-mode)
145 (set-buffer nnbabyl-mbox-buffer)
147 (caar nnbabyl-previous-buffer-mode)
148 (cdar nnbabyl-previous-buffer-mode))
149 (funcall (cdr nnbabyl-previous-buffer-mode))))
150 (nnoo-close-server 'nnbabyl server)
151 (setq nnbabyl-mbox-buffer nil)
154 (deffoo nnbabyl-server-opened (&optional server)
155 (and (nnoo-current-server-p 'nnbabyl server)
157 (buffer-name nnbabyl-mbox-buffer)
159 (buffer-name nntp-server-buffer)))
161 (deffoo nnbabyl-request-article (article &optional newsgroup server buffer)
162 (nnbabyl-possibly-change-newsgroup newsgroup server)
164 (set-buffer nnbabyl-mbox-buffer)
165 (goto-char (point-min))
166 (when (search-forward (nnbabyl-article-string article) nil t)
167 (let (start stop summary-line)
168 (unless (re-search-backward (concat "^" nnbabyl-mail-delimiter) nil t)
169 (goto-char (point-min))
171 (while (and (not (looking-at ".+:"))
172 (zerop (forward-line 1))))
174 (or (when (re-search-forward
175 (concat "^" nnbabyl-mail-delimiter) nil t)
178 (goto-char (point-max)))
180 (let ((nntp-server-buffer (or buffer nntp-server-buffer)))
181 (set-buffer nntp-server-buffer)
183 (insert-buffer-substring nnbabyl-mbox-buffer start stop)
184 (goto-char (point-min))
185 ;; If there is an EOOH header, then we have to remove some
186 ;; duplicated headers.
187 (setq summary-line (looking-at "Summary-line:"))
188 (when (search-forward "\n*** EOOH ***" nil t)
190 ;; The headers to be deleted are located before the
192 (delete-region (point-min) (progn (forward-line 1)
195 (delete-region (progn (beginning-of-line) (point))
196 (or (search-forward "\n\n" nil t)
198 (if (numberp article)
199 (cons nnbabyl-current-group article)
200 (nnbabyl-article-group-number)))))))
202 (deffoo nnbabyl-request-group (group &optional server dont-check)
203 (let ((active (cadr (assoc group nnbabyl-group-alist))))
207 (null (nnbabyl-possibly-change-newsgroup group server)))
208 (nnheader-report 'nnbabyl "No such group: %s" group))
210 (nnheader-report 'nnbabyl "Selected group %s" group)
211 (nnheader-insert ""))
213 (nnheader-report 'nnbabyl "Selected group %s" group)
214 (nnheader-insert "211 %d %d %d %s\n"
215 (1+ (- (cdr active) (car active)))
216 (car active) (cdr active) group))))))
218 (deffoo nnbabyl-request-scan (&optional group server)
219 (nnbabyl-possibly-change-newsgroup group server)
225 (set-buffer nnbabyl-mbox-buffer)
227 (file-name-directory nnbabyl-mbox-file)
231 (let ((in-buf (current-buffer)))
232 (goto-char (point-min))
233 (while (search-forward "\n\^_\n" nil t)
235 (set-buffer nnbabyl-mbox-buffer)
236 (goto-char (point-max))
237 (search-backward "\n\^_" nil t)
238 (goto-char (match-end 0))
239 (insert-buffer-substring in-buf)))
240 (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file))))
242 (deffoo nnbabyl-close-group (group &optional server)
245 (deffoo nnbabyl-request-create-group (group &optional server args)
246 (nnmail-activate 'nnbabyl)
247 (unless (assoc group nnbabyl-group-alist)
248 (push (list group (cons 1 0))
250 (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file))
253 (deffoo nnbabyl-request-list (&optional server)
255 (nnmail-find-file nnbabyl-active-file)
256 (setq nnbabyl-group-alist (nnmail-get-active))
259 (deffoo nnbabyl-request-newgroups (date &optional server)
260 (nnbabyl-request-list server))
262 (deffoo nnbabyl-request-list-newsgroups (&optional server)
263 (nnheader-report 'nnbabyl "nnbabyl: LIST NEWSGROUPS is not implemented."))
265 (deffoo nnbabyl-request-expire-articles
266 (articles newsgroup &optional server force)
267 (nnbabyl-possibly-change-newsgroup newsgroup server)
270 (nnmail-activate 'nnbabyl)
273 (set-buffer nnbabyl-mbox-buffer)
274 (gnus-set-text-properties (point-min) (point-max) nil)
275 (while (and articles is-old)
276 (goto-char (point-min))
277 (when (search-forward (nnbabyl-article-string (car articles)) nil t)
279 (nnmail-expired-article-p
282 (point) (progn (end-of-line) (point))) force))
284 (unless (eq nnmail-expiry-target 'delete)
286 (nnbabyl-request-article (car articles)
289 (let ((nnml-current-directory nil))
290 (nnmail-expiry-target-group
291 nnmail-expiry-target newsgroup)))
292 (nnbabyl-possibly-change-newsgroup newsgroup server))
293 (nnheader-message 5 "Deleting article %d in %s..."
294 (car articles) newsgroup)
295 (nnbabyl-delete-mail))
296 (push (car articles) rest)))
297 (setq articles (cdr articles)))
299 ;; Find the lowest active article in this group.
300 (let ((active (nth 1 (assoc newsgroup nnbabyl-group-alist))))
301 (goto-char (point-min))
302 (while (and (not (search-forward
303 (nnbabyl-article-string (car active)) nil t))
304 (<= (car active) (cdr active)))
305 (setcar active (1+ (car active)))
306 (goto-char (point-min))))
307 (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
308 (nconc rest articles))))
310 (deffoo nnbabyl-request-move-article
311 (article group server accept-form &optional last)
312 (let ((buf (get-buffer-create " *nnbabyl move*"))
315 (nnbabyl-request-article article group server)
318 (insert-buffer-substring nntp-server-buffer)
319 (goto-char (point-min))
320 (while (re-search-forward
322 (save-excursion (search-forward "\n\n" nil t) (point)) t)
323 (delete-region (progn (beginning-of-line) (point))
324 (progn (forward-line 1) (point))))
325 (setq result (eval accept-form))
326 (kill-buffer (current-buffer))
329 (nnbabyl-possibly-change-newsgroup group server)
330 (set-buffer nnbabyl-mbox-buffer)
331 (goto-char (point-min))
332 (if (search-forward (nnbabyl-article-string article) nil t)
333 (nnbabyl-delete-mail))
334 (and last (save-buffer))))
337 (deffoo nnbabyl-request-accept-article (group &optional server last)
338 (nnbabyl-possibly-change-newsgroup group server)
339 (nnmail-check-syntax)
340 (let ((buf (current-buffer))
343 (nnmail-activate 'nnbabyl)
345 (goto-char (point-min))
346 (search-forward "\n\n" nil t)
349 (while (re-search-backward "^X-Gnus-Newsgroup: " beg t)
350 (delete-region (point) (progn (forward-line 1) (point)))))
351 (when nnmail-cache-accepted-message-ids
352 (nnmail-cache-insert (nnmail-fetch-field "message-id") group))
355 (list (cons group (nnbabyl-active-number group)))
356 (nnmail-article-group 'nnbabyl-active-number)))
357 (if (and (null result)
358 (yes-or-no-p "Moved to `junk' group; delete article? "))
360 (setq result (car (nnbabyl-save-mail result))))
361 (set-buffer nnbabyl-mbox-buffer)
362 (goto-char (point-max))
363 (search-backward "\n\^_")
364 (goto-char (match-end 0))
365 (insert-buffer-substring buf)
367 (when nnmail-cache-accepted-message-ids
368 (nnmail-cache-insert (nnmail-fetch-field "message-id") group))
370 (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file))
373 (deffoo nnbabyl-request-replace-article (article group buffer)
374 (nnbabyl-possibly-change-newsgroup group)
376 (set-buffer nnbabyl-mbox-buffer)
377 (goto-char (point-min))
378 (if (not (search-forward (nnbabyl-article-string article) nil t))
380 (nnbabyl-delete-mail t t)
381 (insert-buffer-substring buffer)
385 (deffoo nnbabyl-request-delete-group (group &optional force server)
386 (nnbabyl-possibly-change-newsgroup group server)
387 ;; Delete all articles in GROUP.
389 () ; Don't delete the articles.
391 (set-buffer nnbabyl-mbox-buffer)
392 (goto-char (point-min))
393 ;; Delete all articles in this group.
394 (let ((ident (concat "\nX-Gnus-Newsgroup: " nnbabyl-current-group ":"))
396 (while (search-forward ident nil t)
398 (nnbabyl-delete-mail))
401 ;; Remove the group from all structures.
402 (setq nnbabyl-group-alist
403 (delq (assoc group nnbabyl-group-alist) nnbabyl-group-alist)
404 nnbabyl-current-group nil)
405 ;; Save the active file.
406 (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
409 (deffoo nnbabyl-request-rename-group (group new-name &optional server)
410 (nnbabyl-possibly-change-newsgroup group server)
412 (set-buffer nnbabyl-mbox-buffer)
413 (goto-char (point-min))
414 (let ((ident (concat "\nX-Gnus-Newsgroup: " nnbabyl-current-group ":"))
415 (new-ident (concat "\nX-Gnus-Newsgroup: " new-name ":"))
417 (while (search-forward ident nil t)
418 (replace-match new-ident t t)
422 (let ((entry (assoc group nnbabyl-group-alist)))
423 (and entry (setcar entry new-name))
424 (setq nnbabyl-current-group nil)
425 ;; Save the new group alist.
426 (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
430 ;;; Internal functions.
432 ;; If FORCE, delete article no matter how many X-Gnus-Newsgroup
433 ;; headers there are. If LEAVE-DELIM, don't delete the Unix mbox
435 (defun nnbabyl-delete-mail (&optional force leave-delim)
436 ;; Delete the current X-Gnus-Newsgroup line.
439 (progn (beginning-of-line) (point))
440 (progn (forward-line 1) (point))))
441 ;; Beginning of the article.
447 (unless (re-search-backward (concat "^" nnbabyl-mail-delimiter) nil t)
448 (goto-char (point-min))
450 (if leave-delim (progn (forward-line 1) (point))
451 (match-beginning 0)))
454 (or (and (re-search-forward (concat "^" nnbabyl-mail-delimiter)
458 (goto-char (point-min))
459 ;; Only delete the article if no other groups owns it as well.
460 (when (or force (not (re-search-forward "^X-Gnus-Newsgroup: " nil t)))
461 (delete-region (point-min) (point-max))))))
463 (defun nnbabyl-possibly-change-newsgroup (newsgroup &optional server)
465 (not (nnbabyl-server-opened server)))
466 (nnbabyl-open-server server))
467 (when (or (not nnbabyl-mbox-buffer)
468 (not (buffer-name nnbabyl-mbox-buffer)))
469 (save-excursion (nnbabyl-read-mbox)))
470 (unless nnbabyl-group-alist
471 (nnmail-activate 'nnbabyl))
473 (if (assoc newsgroup nnbabyl-group-alist)
474 (setq nnbabyl-current-group newsgroup)
475 (nnheader-report 'nnbabyl "No such group in file"))
478 (defun nnbabyl-article-string (article)
479 (if (numberp article)
480 (concat "\nX-Gnus-Newsgroup: " nnbabyl-current-group ":"
481 (int-to-string article) " ")
482 (concat "\nMessage-ID: " article)))
484 (defun nnbabyl-article-group-number ()
486 (goto-char (point-min))
487 (when (re-search-forward "^X-Gnus-Newsgroup: +\\([^:]+\\):\\([0-9]+\\) "
489 (cons (buffer-substring (match-beginning 1) (match-end 1))
491 (buffer-substring (match-beginning 2) (match-end 2)))))))
493 (defun nnbabyl-insert-lines ()
494 "Insert how many lines and chars there are in the body of the mail."
497 (goto-char (point-min))
498 (when (search-forward "\n\n" nil t)
499 ;; There may be an EOOH line here...
500 (when (looking-at "\\*\\*\\* EOOH \\*\\*\\*")
501 (search-forward "\n\n" nil t))
502 (setq chars (- (point-max) (point))
503 lines (max (- (count-lines (point) (point-max)) 1) 0))
504 ;; Move back to the end of the headers.
505 (goto-char (point-min))
506 (search-forward "\n\n" nil t)
509 (when (re-search-backward "^Lines: " nil t)
510 (delete-region (point) (progn (forward-line 1) (point)))))
511 (insert (format "Lines: %d\n" lines))
514 (defun nnbabyl-save-mail (group-art)
515 ;; Called narrowed to an article.
516 (nnbabyl-insert-lines)
517 (nnmail-insert-xref group-art)
518 (nnbabyl-insert-newsgroup-line group-art)
519 (run-hooks 'nnbabyl-prepare-save-mail-hook)
522 (defun nnbabyl-insert-newsgroup-line (group-art)
524 (goto-char (point-min))
525 (while (looking-at "From ")
526 (replace-match "Mail-from: From " t t)
528 ;; If there is a C-l at the beginning of the narrowed region, this
529 ;; isn't really a "save", but rather a "scan".
530 (goto-char (point-min))
531 (unless (looking-at "\^L")
533 (insert "\^L\n0, unseen,,\n*** EOOH ***\n")
534 (goto-char (point-max))
536 (when (search-forward "\n\n" nil t)
539 (insert (format "X-Gnus-Newsgroup: %s:%d %s\n"
540 (caar group-art) (cdar group-art)
541 (current-time-string)))
542 (setq group-art (cdr group-art))))
545 (defun nnbabyl-active-number (group)
546 ;; Find the next article number in GROUP.
547 (let ((active (cadr (assoc group nnbabyl-group-alist))))
549 (setcdr active (1+ (cdr active)))
550 ;; This group is new, so we create a new entry for it.
551 ;; This might be a bit naughty... creating groups on the drop of
552 ;; a hat, but I don't know...
553 (push (list group (setq active (cons 1 1)))
554 nnbabyl-group-alist))
557 (defun nnbabyl-create-mbox ()
558 (unless (file-exists-p nnbabyl-mbox-file)
559 ;; Create a new, empty RMAIL mbox file.
561 (set-buffer (setq nnbabyl-mbox-buffer
562 (create-file-buffer nnbabyl-mbox-file)))
563 (setq buffer-file-name nnbabyl-mbox-file)
564 (insert "BABYL OPTIONS:\n\n\^_")
566 (point-min) (point-max) nnbabyl-mbox-file t 'nomesg))))
568 (defun nnbabyl-read-mbox ()
569 (nnmail-activate 'nnbabyl)
570 (nnbabyl-create-mbox)
572 (unless (and nnbabyl-mbox-buffer
573 (buffer-name nnbabyl-mbox-buffer)
575 (set-buffer nnbabyl-mbox-buffer)
576 (= (buffer-size) (nnheader-file-size nnbabyl-mbox-file))))
577 ;; This buffer has changed since we read it last. Possibly.
579 (let ((delim (concat "^" nnbabyl-mail-delimiter))
580 (alist nnbabyl-group-alist)
582 (set-buffer (setq nnbabyl-mbox-buffer
583 (nnheader-find-file-noselect
584 nnbabyl-mbox-file nil t)))
585 ;; Save previous buffer mode.
586 (setq nnbabyl-previous-buffer-mode
587 (cons (cons (point-min) (point-max))
590 (buffer-disable-undo)
592 (setq buffer-read-only nil)
595 ;; Go through the group alist and compare against
598 (goto-char (point-max))
599 (when (and (re-search-backward
600 (format "^X-Gnus-Newsgroup: %s:\\([0-9]+\\) "
606 (match-beginning 1) (match-end 1))))
608 (setcdr (cadar alist) number))
609 (setq alist (cdr alist)))
611 ;; We go through the mbox and make sure that each and
612 ;; every mail belongs to some group or other.
613 (goto-char (point-min))
614 (if (looking-at "\^L")
616 (re-search-forward delim nil t)
617 (setq start (match-end 0)))
618 (while (re-search-forward delim nil t)
619 (setq end (match-end 0))
620 (unless (search-backward "\nX-Gnus-Newsgroup: " start t)
624 (narrow-to-region (goto-char start) end)
626 (nnmail-article-group 'nnbabyl-active-number))
627 (setq end (point-max)))))
628 (goto-char (setq start end)))
629 (when (buffer-modified-p (current-buffer))
631 (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)))))
633 (defun nnbabyl-remove-incoming-delims ()
634 (goto-char (point-min))
635 (while (search-forward "\^_" nil t)
636 (replace-match "?" t t)))
638 (defun nnbabyl-check-mbox ()
639 "Go through the nnbabyl mbox and make sure that no article numbers are reused."
641 (let ((idents (make-vector 1000 0))
644 (when (or (not nnbabyl-mbox-buffer)
645 (not (buffer-name nnbabyl-mbox-buffer)))
647 (set-buffer nnbabyl-mbox-buffer)
648 (goto-char (point-min))
649 (while (re-search-forward "^X-Gnus-Newsgroup: \\([^ ]+\\) " nil t)
650 (if (intern-soft (setq id (match-string 1)) idents)
652 (delete-region (progn (beginning-of-line) (point))
653 (progn (forward-line 1) (point)))
654 (nnheader-message 7 "Moving %s..." id)
656 (nnmail-article-group 'nnbabyl-active-number)))
658 (when (buffer-modified-p (current-buffer))
660 (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
661 (nnheader-message 5 ""))))
665 ;;; nnbabyl.el ends here