1 ;;; nnbabyl.el --- rmail mbox access for Gnus
2 ;; Copyright (C) 1995 Free Software Foundation, Inc.
4 ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
5 ;; Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
6 ;; Keywords: news, mail
8 ;; This file is part of GNU Emacs.
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)
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.
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.
26 ;; For an overview of what the interface functions do, please see the
35 (defvar nnbabyl-mbox-file (expand-file-name "~/RMAIL")
36 "The name of the rmail box file in the users home directory.")
38 (defvar nnbabyl-active-file (expand-file-name "~/.rmail-active")
39 "The name of the active file for the rmail box.")
41 (defvar nnbabyl-get-new-mail t
42 "If non-nil, nnbabyl will check the incoming mail file and split the mail.")
44 (defvar nnbabyl-prepare-save-mail-hook nil
45 "Hook run narrowed to an article before saving.")
49 (defvar nnbabyl-mail-delimiter "\^_")
51 (defconst nnbabyl-version "nnbabyl 0.1"
54 (defvar nnbabyl-mbox-buffer nil)
55 (defvar nnbabyl-current-group nil)
56 (defvar nnbabyl-status-string "")
57 (defvar nnbabyl-group-alist nil)
61 (defvar nnbabyl-current-server nil)
62 (defvar nnbabyl-server-alist nil)
63 (defvar nnbabyl-server-variables
65 (list 'nnbabyl-mbox-file nnbabyl-mbox-file)
66 (list 'nnbabyl-active-file nnbabyl-active-file)
67 (list 'nnbabyl-get-new-mail nnbabyl-get-new-mail)
68 '(nnbabyl-current-group nil)
69 '(nnbabyl-status-string "")
70 '(nnbabyl-group-alist nil)))
74 ;;; Interface functions
76 (defun nnbabyl-retrieve-headers (sequence &optional newsgroup server)
78 (set-buffer nntp-server-buffer)
81 (number (length sequence))
83 article art-string start stop)
84 (nnbabyl-possibly-change-newsgroup newsgroup)
85 (if (stringp (car sequence))
88 (setq article (car sequence))
89 (setq art-string (nnbabyl-article-string article))
90 (set-buffer nnbabyl-mbox-buffer)
91 (if (or (search-forward art-string nil t)
92 (search-backward art-string nil t))
94 (re-search-backward (concat "^" nnbabyl-mail-delimiter) nil t)
95 (while (and (not (looking-at ".+:"))
96 (zerop (forward-line 1))))
98 (search-forward "\n\n" nil t)
99 (setq stop (1- (point)))
100 (set-buffer nntp-server-buffer)
101 (insert "221 " (int-to-string article) " Article retrieved.\n")
102 (insert-buffer-substring nnbabyl-mbox-buffer start stop)
103 (goto-char (point-max))
105 (setq sequence (cdr sequence))
106 (setq count (1+ count))
107 (and (numberp nnmail-large-newsgroup)
108 (> number nnmail-large-newsgroup)
110 gnus-verbose-backends
111 (message "nnbabyl: Receiving headers... %d%%"
112 (/ (* count 100) number))))
114 (and (numberp nnmail-large-newsgroup)
115 (> number nnmail-large-newsgroup)
116 gnus-verbose-backends
117 (message "nnbabyl: Receiving headers...done"))
119 ;; Fold continuation lines.
120 (goto-char (point-min))
121 (while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t)
122 (replace-match " " t t))
125 (defun nnbabyl-open-server (server &optional defs)
126 (nnheader-init-server-buffer)
127 (if (equal server nnbabyl-current-server)
129 (if nnbabyl-current-server
130 (setq nnbabyl-server-alist
131 (cons (list nnbabyl-current-server
132 (nnheader-save-variables nnbabyl-server-variables))
133 nnbabyl-server-alist)))
134 (let ((state (assoc server nnbabyl-server-alist)))
137 (nnheader-restore-variables (nth 1 state))
138 (setq nnbabyl-server-alist (delq state nnbabyl-server-alist)))
139 (nnheader-set-init-variables nnbabyl-server-variables defs)))
140 (setq nnbabyl-current-server server)))
142 (defun nnbabyl-close-server (&optional server)
145 (defun nnbabyl-server-opened (&optional server)
146 (and (equal server nnbabyl-current-server)
148 (buffer-name nnbabyl-mbox-buffer)
150 (buffer-name nntp-server-buffer)))
152 (defun nnbabyl-status-message (&optional server)
153 nnbabyl-status-string)
155 (defun nnbabyl-request-article (article &optional newsgroup server buffer)
156 (nnbabyl-possibly-change-newsgroup newsgroup)
157 (if (stringp article)
160 (set-buffer nnbabyl-mbox-buffer)
161 (goto-char (point-min))
162 (if (search-forward (nnbabyl-article-string article) nil t)
164 (re-search-backward (concat "^" nnbabyl-mail-delimiter) nil t)
165 (while (and (not (looking-at ".+:"))
166 (zerop (forward-line 1))))
168 (or (and (re-search-forward
169 (concat "^" nnbabyl-mail-delimiter) nil t)
171 (goto-char (point-max)))
173 (let ((nntp-server-buffer (or buffer nntp-server-buffer)))
174 (set-buffer nntp-server-buffer)
176 (insert-buffer-substring nnbabyl-mbox-buffer start stop)
177 (goto-char (point-min))
178 (if (search-forward "\n*** EOOH ***" nil t)
180 (delete-region (progn (beginning-of-line) (point))
181 (or (search-forward "\n\n" nil t)
185 (defun nnbabyl-request-group (group &optional server dont-check)
187 (if (nnbabyl-possibly-change-newsgroup group)
190 (nnbabyl-get-new-mail group)
192 (set-buffer nntp-server-buffer)
194 (let ((active (assoc group nnbabyl-group-alist)))
195 (insert (format "211 %d %d %d %s\n"
196 (1+ (- (cdr (car (cdr active)))
197 (car (car (cdr active)))))
198 (car (car (cdr active)))
199 (cdr (car (cdr active)))
203 (defun nnbabyl-close-group (group &optional server)
206 (defun nnbabyl-request-list (&optional server)
207 (if server (nnbabyl-get-new-mail))
209 (or (nnmail-find-file nnbabyl-active-file)
211 (setq nnbabyl-group-alist (nnmail-get-active))
212 (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
213 (nnmail-find-file nnbabyl-active-file)))))
215 (defun nnbabyl-request-newgroups (date &optional server)
216 (nnbabyl-request-list server))
218 (defun nnbabyl-request-list-newsgroups (&optional server)
219 (setq nnbabyl-status-string "nnbabyl: LIST NEWSGROUPS is not implemented.")
222 (defun nnbabyl-request-post (&optional server)
223 (mail-send-and-exit nil))
225 (defalias 'nnbabyl-request-post-buffer 'nnmail-request-post-buffer)
227 (defun nnbabyl-request-expire-articles (articles newsgroup &optional server force)
228 (nnbabyl-possibly-change-newsgroup newsgroup)
229 (let* ((days (or (and nnmail-expiry-wait-function
230 (funcall nnmail-expiry-wait-function newsgroup))
234 (set-buffer nnbabyl-mbox-buffer)
236 (goto-char (point-min))
237 (if (search-forward (nnbabyl-article-string (car articles)) nil t)
239 (> (nnmail-days-between
240 (current-time-string)
242 (point) (progn (end-of-line) (point))))
245 (and gnus-verbose-backends
246 (message "Deleting: %s" (car articles)))
247 (nnbabyl-delete-mail))
248 (setq rest (cons (car articles) rest))))
249 (setq articles (cdr articles)))
251 ;; Find the lowest active article in this group.
252 (let ((active (nth 1 (assoc newsgroup nnbabyl-group-alist))))
253 (goto-char (point-min))
254 (while (and (not (search-forward
255 (nnbabyl-article-string (car active)) nil t))
256 (<= (car active) (cdr active)))
257 (setcar active (1+ (car active)))
258 (goto-char (point-min))))
259 (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
262 (defun nnbabyl-request-move-article
263 (article group server accept-form &optional last)
264 (nnbabyl-possibly-change-newsgroup group)
265 (let ((buf (get-buffer-create " *nnbabyl move*"))
268 (nnbabyl-request-article article group server)
271 (insert-buffer-substring nntp-server-buffer)
272 (goto-char (point-min))
273 (if (re-search-forward
275 (save-excursion (search-forward "\n\n" nil t) (point)) t)
276 (delete-region (progn (beginning-of-line) (point))
277 (progn (forward-line 1) (point))))
278 (setq result (eval accept-form))
279 (kill-buffer (current-buffer))
282 (set-buffer nnbabyl-mbox-buffer)
283 (goto-char (point-min))
284 (if (search-forward (nnbabyl-article-string article) nil t)
285 (nnbabyl-delete-mail))
286 (and last (save-buffer))))
289 (defun nnbabyl-request-accept-article (group &optional last)
290 (let ((buf (current-buffer))
293 (nnbabyl-request-list)
294 (setq nnbabyl-group-alist (nnmail-get-active))
296 (goto-char (point-min))
297 (search-forward "\n\n" nil t)
300 (while (re-search-backward "^X-Gnus-Newsgroup: " beg t)
301 (delete-region (point) (progn (forward-line 1) (point)))))
302 (let ((nnmail-split-methods
303 (if (stringp group) (list (list group ""))
304 nnmail-split-methods)))
305 (setq result (car (nnbabyl-save-mail))))
306 (set-buffer nnbabyl-mbox-buffer)
307 (goto-char (point-max))
308 (search-backward "\n\^_")
309 (goto-char (match-end 0))
314 nnbabyl-group-alist nnbabyl-active-file)))
317 (defun nnbabyl-request-replace-article (article group buffer)
318 (nnbabyl-possibly-change-newsgroup group)
320 (set-buffer nnbabyl-mbox-buffer)
321 (goto-char (point-min))
322 (if (not (search-forward (nnbabyl-article-string article) nil t))
324 (nnbabyl-delete-mail t t)
325 (insert-buffer-substring buffer)
330 ;;; Low-Level Interface
332 ;; If FORCE, delete article no matter how many X-Gnus-Newsgroup
333 ;; headers there are. If LEAVE-DELIM, don't delete the Unix mbox
335 (defun nnbabyl-delete-mail (&optional force leave-delim)
336 ;; Delete the current X-Gnus-Newsgroup line.
339 (progn (beginning-of-line) (point))
340 (progn (forward-line 1) (point))))
341 ;; Beginning of the article.
347 (re-search-backward (concat "^" nnbabyl-mail-delimiter) nil t)
348 (if leave-delim (progn (forward-line 1) (point))
349 (match-beginning 0)))
352 (or (and (re-search-forward (concat "^" nnbabyl-mail-delimiter)
354 (if (and (not (bobp)) leave-delim)
355 (progn (forward-line -2) (point))
356 (match-beginning 0)))
358 (goto-char (point-min))
359 ;; Only delete the article if no other groups owns it as well.
360 (if (or force (not (re-search-forward "^X-Gnus-Newsgroup: " nil t)))
361 (delete-region (point-min) (point-max))))))
363 (defun nnbabyl-possibly-change-newsgroup (newsgroup)
364 (if (or (not nnbabyl-mbox-buffer)
365 (not (buffer-name nnbabyl-mbox-buffer)))
366 (save-excursion (nnbabyl-read-mbox)))
367 (or nnbabyl-group-alist
369 (nnbabyl-request-list)
370 (setq nnbabyl-group-alist (nnmail-get-active))))
372 (if (assoc newsgroup nnbabyl-group-alist)
373 (setq nnbabyl-current-group newsgroup)
374 (setq nnbabyl-status-string "No such group in file")
377 (defun nnbabyl-article-string (article)
378 (concat "\nX-Gnus-Newsgroup: " nnbabyl-current-group ":"
379 (int-to-string article) " "))
381 (defun nnbabyl-insert-lines ()
382 "Insert how many lines and chars there are in the body of the mail."
385 (goto-char (point-min))
386 (if (search-forward "\n\n" nil t)
388 ;; There may be an EOOH line here...
389 (if (looking-at "\\*\\*\\* EOOH \\*\\*\\*")
390 (search-forward "\n\n" nil t))
391 (setq chars (- (point-max) (point)))
392 (setq lines (- (count-lines (point) (point-max)) 1))
393 ;; Move back to the end of the headers.
394 (goto-char (point-min))
395 (search-forward "\n\n" nil t)
398 (if (re-search-backward "^Lines: " nil t)
399 (delete-region (point) (progn (forward-line 1) (point)))))
400 (insert (format "Lines: %d\n" lines))
403 (defun nnbabyl-save-mail ()
404 ;; Called narrowed to an article.
405 (let ((group-art (nreverse (nnmail-article-group 'nnbabyl-active-number))))
406 (nnbabyl-insert-lines)
407 (nnmail-insert-xref group-art)
408 (nnbabyl-insert-newsgroup-line group-art)
409 (run-hooks 'nnbabyl-prepare-save-mail-hook)
412 (defun nnbabyl-insert-newsgroup-line (group-art)
414 (goto-char (point-min))
415 ;; If there is a C-l at the beginning of the narrowed region, this
416 ;; isn't really a "save", but rather a "scan".
417 (while (looking-at "From ")
418 (replace-match "Mail-from: From " t t)
420 (goto-char (point-min))
421 (or (looking-at "\^L")
423 (insert "\^L\n0, unseen,,\n*** EOOH ***\n")
424 (goto-char (point-max))
426 (if (search-forward "\n\n" nil t)
430 (insert (format "X-Gnus-Newsgroup: %s:%d %s\n"
431 (car (car group-art)) (cdr (car group-art))
432 (current-time-string)))
433 (setq group-art (cdr group-art)))))
436 (defun nnbabyl-active-number (group)
437 ;; Find the next article number in GROUP.
438 (let ((active (car (cdr (assoc group nnbabyl-group-alist)))))
439 (setcdr active (1+ (cdr active)))
442 (defun nnbabyl-read-mbox ()
443 (nnbabyl-request-list)
444 (setq nnbabyl-group-alist (nnmail-get-active))
445 (or (file-exists-p nnbabyl-mbox-file)
447 (set-buffer (setq nnbabyl-mbox-buffer
448 (create-file-buffer nnbabyl-mbox-file)))
449 (setq buffer-file-name nnbabyl-mbox-file)
450 (insert "BABYL OPTIONS:\n\n\^_")
451 (write-region (point-min) (point-max) nnbabyl-mbox-file t 'nomesg)))
453 (if (and nnbabyl-mbox-buffer
454 (buffer-name nnbabyl-mbox-buffer)
456 (set-buffer nnbabyl-mbox-buffer)
457 (= (buffer-size) (nth 7 (file-attributes nnbabyl-mbox-file)))))
460 (let ((delim (concat "^" nnbabyl-mail-delimiter))
461 (buf (or (get-buffer (file-name-nondirectory nnbabyl-mbox-file))
462 (create-file-buffer nnbabyl-mbox-file)))
464 (set-buffer (setq nnbabyl-mbox-buffer buf))
465 (buffer-disable-undo (current-buffer))
467 (insert-file-contents nnbabyl-mbox-file)
468 (setq buffer-file-name nnbabyl-mbox-file)
469 (set-buffer-modified-p nil)
471 (goto-char (point-min))
472 (while (re-search-forward delim nil t)
473 (setq start (match-beginning 0))
475 (save-excursion (re-search-forward delim nil t))
477 "\nX-Gnus-Newsgroup: "
479 (setq end (or (and (re-search-forward delim nil t)
487 (narrow-to-region (1+ start) end)
488 (nnbabyl-save-mail))))))
489 (and (buffer-modified-p (current-buffer)) (save-buffer))
490 (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)))))
492 (defun nnbabyl-remove-incoming-delims ()
493 (goto-char (point-min))
494 (while (search-forward "\^_" nil t)
495 (replace-match "?" t t)))
497 (defun nnbabyl-get-new-mail (&optional group)
498 "Read new incoming mail."
499 (let* ((spools (nnmail-get-spool-files group))
504 (if (or (not nnbabyl-get-new-mail) (not nnmail-spool-file))
506 ;; We go through all the existing spool files and split the
510 (file-exists-p (car spools))
511 (> (nth 7 (file-attributes (car spools))) 0)
513 (and gnus-verbose-backends
514 (message "nnbabyl: Reading incoming mail..."))
517 (car spools) (concat nnbabyl-mbox-file "-Incoming")))
518 (setq incomings (cons incoming incomings))
520 (setq group (nnmail-get-split-group (car spools) group-in))
521 (let* ((nnmail-prepare-incoming-hook
522 (cons 'nnbabyl-remove-incoming-delims
523 nnmail-prepare-incoming-hook))
525 (setq in-buf (nnmail-split-incoming
526 incoming 'nnbabyl-save-mail t group))
528 (goto-char (point-min))
529 (while (search-forward "\n\^_\n" nil t)
531 (set-buffer nnbabyl-mbox-buffer)
532 (goto-char (point-max))
533 (search-backward "\n\^_" nil t)
534 (goto-char (match-end 0))
535 (insert-buffer-substring in-buf)
536 (kill-buffer in-buf)))))
537 (setq spools (cdr spools)))
538 ;; If we did indeed read any incoming spools, we save all info.
539 (and (buffer-modified-p nnbabyl-mbox-buffer)
541 (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
542 (set-buffer nnbabyl-mbox-buffer)
544 (if incomings (run-hooks 'nnmail-read-incoming-hook))
546 (and nnmail-delete-incoming
547 (file-writable-p incoming)
548 (delete-file incoming))
549 (setq incomings (cdr incomings))))))
553 ;;; nnbabyl.el ends here