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 (not (search-forward
255 (nnbabyl-article-string (car active)) nil t))
256 (setcar active (1+ (car active)))
257 (goto-char (point-min))))
258 (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
261 (defun nnbabyl-request-move-article
262 (article group server accept-form &optional last)
263 (nnbabyl-possibly-change-newsgroup group)
264 (let ((buf (get-buffer-create " *nnbabyl move*"))
267 (nnbabyl-request-article article group server)
270 (insert-buffer-substring nntp-server-buffer)
271 (goto-char (point-min))
272 (if (re-search-forward
274 (save-excursion (search-forward "\n\n" nil t) (point)) t)
275 (delete-region (progn (beginning-of-line) (point))
276 (progn (forward-line 1) (point))))
277 (setq result (eval accept-form))
278 (kill-buffer (current-buffer))
281 (set-buffer nnbabyl-mbox-buffer)
282 (goto-char (point-min))
283 (if (search-forward (nnbabyl-article-string article) nil t)
284 (nnbabyl-delete-mail))
285 (and last (save-buffer))))
288 (defun nnbabyl-request-accept-article (group &optional last)
289 (let ((buf (current-buffer))
292 (nnbabyl-request-list)
293 (setq nnbabyl-group-alist (nnmail-get-active))
295 (goto-char (point-min))
296 (search-forward "\n\n" nil t)
299 (while (re-search-backward "^X-Gnus-Newsgroup: " beg t)
300 (delete-region (point) (progn (forward-line 1) (point)))))
301 (let ((nnmail-split-methods
302 (if (stringp group) (list (list group ""))
303 nnmail-split-methods)))
304 (setq result (car (nnbabyl-save-mail))))
305 (set-buffer nnbabyl-mbox-buffer)
306 (goto-char (point-max))
307 (search-backward "\n\^_")
308 (goto-char (match-end 0))
313 nnbabyl-group-alist nnbabyl-active-file)))
316 (defun nnbabyl-request-replace-article (article group buffer)
317 (nnbabyl-possibly-change-newsgroup group)
319 (set-buffer nnbabyl-mbox-buffer)
320 (goto-char (point-min))
321 (if (not (search-forward (nnbabyl-article-string article) nil t))
323 (nnbabyl-delete-mail t t)
324 (insert-buffer-substring buffer)
329 ;;; Low-Level Interface
331 ;; If FORCE, delete article no matter how many X-Gnus-Newsgroup
332 ;; headers there are. If LEAVE-DELIM, don't delete the Unix mbox
334 (defun nnbabyl-delete-mail (&optional force leave-delim)
335 ;; Delete the current X-Gnus-Newsgroup line.
338 (progn (beginning-of-line) (point))
339 (progn (forward-line 1) (point))))
340 ;; Beginning of the article.
345 (re-search-backward (concat "^" nnbabyl-mail-delimiter) nil t)
346 (if leave-delim (progn (forward-line 1) (point))
347 (match-beginning 0)))
350 (or (and (re-search-forward (concat "^" nnbabyl-mail-delimiter)
352 (if (and (not (bobp)) leave-delim)
353 (progn (forward-line -2) (point))
354 (match-beginning 0)))
356 (goto-char (point-min))
357 ;; Only delete the article if no other groups owns it as well.
358 (if (or force (not (re-search-forward "^X-Gnus-Newsgroup: " nil t)))
359 (delete-region (point-min) (point-max))))))
361 (defun nnbabyl-possibly-change-newsgroup (newsgroup)
362 (if (or (not nnbabyl-mbox-buffer)
363 (not (buffer-name nnbabyl-mbox-buffer)))
364 (save-excursion (nnbabyl-read-mbox)))
365 (or nnbabyl-group-alist
367 (nnbabyl-request-list)
368 (setq nnbabyl-group-alist (nnmail-get-active))))
370 (if (assoc newsgroup nnbabyl-group-alist)
371 (setq nnbabyl-current-group newsgroup)
372 (setq nnbabyl-status-string "No such group in file")
375 (defun nnbabyl-article-string (article)
376 (concat "\nX-Gnus-Newsgroup: " nnbabyl-current-group ":"
377 (int-to-string article) " "))
379 (defun nnbabyl-insert-lines ()
380 "Insert how many lines and chars there are in the body of the mail."
383 (goto-char (point-min))
384 (if (search-forward "\n\n" nil t)
386 ;; There may be an EOOH line here...
387 (if (looking-at "\\*\\*\\* EOOH \\*\\*\\*")
388 (search-forward "\n\n" nil t))
389 (setq chars (- (point-max) (point)))
390 (setq lines (- (count-lines (point) (point-max)) 1))
391 ;; Move back to the end of the headers.
392 (goto-char (point-min))
393 (search-forward "\n\n" nil t)
396 (if (re-search-backward "^Lines: " nil t)
397 (delete-region (point) (progn (forward-line 1) (point)))))
398 (insert (format "Lines: %d\n" lines))
401 (defun nnbabyl-save-mail ()
402 ;; Called narrowed to an article.
403 (let ((group-art (nreverse (nnmail-article-group 'nnbabyl-active-number))))
404 (nnbabyl-insert-lines)
405 (nnmail-insert-xref group-art)
406 (nnbabyl-insert-newsgroup-line group-art)
407 (run-hooks 'nnbabyl-prepare-save-mail-hook)
410 (defun nnbabyl-insert-newsgroup-line (group-art)
412 (goto-char (point-min))
413 ;; If there is a C-l at the beginning of the narrowed region, this
414 ;; isn't really a "save", but rather a "scan".
415 (while (looking-at "From ")
416 (replace-match "Mail-from: From " t t)
418 (goto-char (point-min))
419 (or (looking-at "\^L")
421 (insert "\^L\n0, unseen,,\n*** EOOH ***\n")
422 (goto-char (point-max))
424 (if (search-forward "\n\n" nil t)
428 (insert (format "X-Gnus-Newsgroup: %s:%d %s\n"
429 (car (car group-art)) (cdr (car group-art))
430 (current-time-string)))
431 (setq group-art (cdr group-art)))))
434 (defun nnbabyl-active-number (group)
435 ;; Find the next article number in GROUP.
436 (let ((active (car (cdr (assoc group nnbabyl-group-alist)))))
437 (setcdr active (1+ (cdr active)))
440 (defun nnbabyl-read-mbox ()
441 (nnbabyl-request-list)
442 (setq nnbabyl-group-alist (nnmail-get-active))
443 (or (file-exists-p nnbabyl-mbox-file)
445 (set-buffer (setq nnbabyl-mbox-buffer
446 (create-file-buffer nnbabyl-mbox-file)))
447 (setq buffer-file-name nnbabyl-mbox-file)
448 (insert "BABYL OPTIONS:\n\n\^_")
449 (write-region (point-min) (point-max) nnbabyl-mbox-file t 'nomesg)))
451 (if (and nnbabyl-mbox-buffer
452 (buffer-name nnbabyl-mbox-buffer)
454 (set-buffer nnbabyl-mbox-buffer)
455 (= (buffer-size) (nth 7 (file-attributes nnbabyl-mbox-file)))))
458 (let ((delim (concat "^" nnbabyl-mail-delimiter))
459 (buf (or (get-buffer (file-name-nondirectory nnbabyl-mbox-file))
460 (create-file-buffer nnbabyl-mbox-file)))
462 (set-buffer (setq nnbabyl-mbox-buffer buf))
463 (buffer-disable-undo (current-buffer))
465 (insert-file-contents nnbabyl-mbox-file)
466 (setq buffer-file-name nnbabyl-mbox-file)
467 (set-buffer-modified-p nil)
469 (goto-char (point-min))
470 (while (re-search-forward delim nil t)
471 (setq start (match-beginning 0))
473 (save-excursion (re-search-forward delim nil t))
475 "\nX-Gnus-Newsgroup: "
477 (setq end (or (and (re-search-forward delim nil t)
485 (narrow-to-region (1+ start) end)
486 (nnbabyl-save-mail))))))
487 (and (buffer-modified-p (current-buffer)) (save-buffer))
488 (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)))))
490 (defun nnbabyl-get-new-mail (&optional group)
491 "Read new incoming mail."
492 (let ((spools (nnmail-get-spool-files group))
495 (if (or (not nnbabyl-get-new-mail) (not nnmail-spool-file))
497 ;; We go through all the existing spool files and split the
501 (file-exists-p (car spools))
502 (> (nth 7 (file-attributes (car spools))) 0)
504 (and gnus-verbose-backends
505 (message "nnbabyl: Reading incoming mail..."))
508 (car spools) (concat nnbabyl-mbox-file "-Incoming")))
509 (setq incomings (cons incoming incomings))
511 (let ((in-buf (nnmail-split-incoming
512 incoming 'nnbabyl-save-mail t group)))
514 (goto-char (point-min))
515 (while (search-forward "\n\^_\n" nil t)
517 (set-buffer nnbabyl-mbox-buffer)
518 (goto-char (point-max))
519 (search-backward "\n\^_" nil t)
520 (goto-char (match-end 0))
521 (insert-buffer-substring in-buf)
522 (kill-buffer in-buf)))))
523 (setq spools (cdr spools)))
524 ;; If we did indeed read any incoming spools, we save all info.
525 (and (buffer-modified-p nnbabyl-mbox-buffer)
527 (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
528 (set-buffer nnbabyl-mbox-buffer)
531 (and nnmail-delete-incoming
532 (file-writable-p incoming)
533 (delete-file incoming))
534 (setq incomings (cdr incomings))))))
538 ;;; nnbabyl.el ends here