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 1.0"
54 (defvar nnbabyl-mbox-buffer nil)
55 (defvar nnbabyl-current-group nil)
56 (defvar nnbabyl-status-string "")
57 (defvar nnbabyl-group-alist nil)
58 (defvar nnbabyl-active-timestamp nil)
62 (defvar nnbabyl-current-server nil)
63 (defvar nnbabyl-server-alist nil)
64 (defvar nnbabyl-server-variables
66 (list 'nnbabyl-mbox-file nnbabyl-mbox-file)
67 (list 'nnbabyl-active-file nnbabyl-active-file)
68 (list 'nnbabyl-get-new-mail nnbabyl-get-new-mail)
69 '(nnbabyl-current-group nil)
70 '(nnbabyl-status-string "")
71 '(nnbabyl-group-alist nil)))
75 ;;; Interface functions
77 (defun nnbabyl-retrieve-headers (sequence &optional newsgroup server)
79 (set-buffer nntp-server-buffer)
81 (let ((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 (set-buffer nntp-server-buffer)
121 (goto-char (point-min))
122 (while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t)
123 (replace-match " " t t))
126 (defun nnbabyl-open-server (server &optional defs)
127 (nnheader-init-server-buffer)
128 (if (equal server nnbabyl-current-server)
130 (if nnbabyl-current-server
131 (setq nnbabyl-server-alist
132 (cons (list nnbabyl-current-server
133 (nnheader-save-variables nnbabyl-server-variables))
134 nnbabyl-server-alist)))
135 (let ((state (assoc server nnbabyl-server-alist)))
138 (nnheader-restore-variables (nth 1 state))
139 (setq nnbabyl-server-alist (delq state nnbabyl-server-alist)))
140 (nnheader-set-init-variables nnbabyl-server-variables defs)))
141 (setq nnbabyl-current-server server)))
143 (defun nnbabyl-close-server (&optional server)
146 (defun nnbabyl-server-opened (&optional server)
147 (and (equal server nnbabyl-current-server)
149 (buffer-name nnbabyl-mbox-buffer)
151 (buffer-name nntp-server-buffer)))
153 (defun nnbabyl-status-message (&optional server)
154 nnbabyl-status-string)
156 (defun nnbabyl-request-article (article &optional newsgroup server buffer)
157 (nnbabyl-possibly-change-newsgroup newsgroup)
158 (if (stringp article)
161 (set-buffer nnbabyl-mbox-buffer)
162 (goto-char (point-min))
163 (if (search-forward (nnbabyl-article-string article) nil t)
164 (let (start stop summary-line)
165 (re-search-backward (concat "^" nnbabyl-mail-delimiter) nil t)
166 (while (and (not (looking-at ".+:"))
167 (zerop (forward-line 1))))
169 (or (and (re-search-forward
170 (concat "^" nnbabyl-mail-delimiter) nil t)
172 (goto-char (point-max)))
174 (let ((nntp-server-buffer (or buffer nntp-server-buffer)))
175 (set-buffer nntp-server-buffer)
177 (insert-buffer-substring nnbabyl-mbox-buffer start stop)
178 (goto-char (point-min))
179 ;; If there is an EOOH header, then we have to remove some
180 ;; duplicated headers.
181 (setq summary-line (looking-at "Summary-line:"))
182 (if (search-forward "\n*** EOOH ***" nil t)
184 ;; The headers to be deleted are located before the
186 (delete-region (point-min)
187 (progn (forward-line 1) (point)))
189 (delete-region (progn (beginning-of-line) (point))
190 (or (search-forward "\n\n" nil t)
194 (defun nnbabyl-request-group (group &optional server dont-check)
196 (if (nnbabyl-possibly-change-newsgroup group)
199 (nnbabyl-get-new-mail group)
201 (set-buffer nntp-server-buffer)
203 (let ((active (assoc group nnbabyl-group-alist)))
204 (insert (format "211 %d %d %d %s\n"
205 (1+ (- (cdr (car (cdr active)))
206 (car (car (cdr active)))))
207 (car (car (cdr active)))
208 (cdr (car (cdr active)))
212 (defun nnbabyl-close-group (group &optional server)
215 (defun nnbabyl-request-create-group (group &optional server)
216 (nnmail-activate 'nnbabyl)
217 (or (assoc group nnbabyl-group-alist)
219 (setq nnbabyl-group-alist (cons (list group (setq active (cons 1 0)))
220 nnbabyl-group-alist))
221 (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)))
224 (defun nnbabyl-request-list (&optional server)
225 (if server (nnbabyl-get-new-mail))
227 (or (nnmail-find-file nnbabyl-active-file)
229 (setq nnbabyl-group-alist (nnmail-get-active))
230 (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
231 (nnmail-find-file nnbabyl-active-file)))))
233 (defun nnbabyl-request-newgroups (date &optional server)
234 (nnbabyl-request-list server))
236 (defun nnbabyl-request-list-newsgroups (&optional server)
237 (setq nnbabyl-status-string "nnbabyl: LIST NEWSGROUPS is not implemented.")
240 (defun nnbabyl-request-post (&optional server)
241 (mail-send-and-exit nil))
243 (defalias 'nnbabyl-request-post-buffer 'nnmail-request-post-buffer)
245 (defun nnbabyl-request-expire-articles
246 (articles newsgroup &optional server force)
247 (nnbabyl-possibly-change-newsgroup newsgroup)
248 (let* ((days (or (and nnmail-expiry-wait-function
249 (funcall nnmail-expiry-wait-function newsgroup))
253 (nnmail-activate 'nnbabyl)
256 (set-buffer nnbabyl-mbox-buffer)
257 (set-text-properties (point-min) (point-max) nil)
258 (while (and articles is-old)
259 (goto-char (point-min))
260 (if (search-forward (nnbabyl-article-string (car articles)) nil t)
263 (> (nnmail-days-between
264 (current-time-string)
266 (point) (progn (end-of-line) (point))))
269 (and gnus-verbose-backends
270 (message "Deleting article %s..." (car articles)))
271 (nnbabyl-delete-mail))
272 (setq rest (cons (car articles) rest))))
273 (setq articles (cdr articles)))
275 ;; Find the lowest active article in this group.
276 (let ((active (nth 1 (assoc newsgroup nnbabyl-group-alist))))
277 (goto-char (point-min))
278 (while (and (not (search-forward
279 (nnbabyl-article-string (car active)) nil t))
280 (<= (car active) (cdr active)))
281 (setcar active (1+ (car active)))
282 (goto-char (point-min))))
283 (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
284 (nconc rest articles))))
286 (defun nnbabyl-request-move-article
287 (article group server accept-form &optional last)
288 (nnbabyl-possibly-change-newsgroup group)
289 (let ((buf (get-buffer-create " *nnbabyl move*"))
292 (nnbabyl-request-article article group server)
295 (insert-buffer-substring nntp-server-buffer)
296 (goto-char (point-min))
297 (if (re-search-forward
299 (save-excursion (search-forward "\n\n" nil t) (point)) t)
300 (delete-region (progn (beginning-of-line) (point))
301 (progn (forward-line 1) (point))))
302 (setq result (eval accept-form))
303 (kill-buffer (current-buffer))
306 (set-buffer nnbabyl-mbox-buffer)
307 (goto-char (point-min))
308 (if (search-forward (nnbabyl-article-string article) nil t)
309 (nnbabyl-delete-mail))
310 (and last (save-buffer))))
313 (defun nnbabyl-request-accept-article (group &optional last)
314 (let ((buf (current-buffer))
317 (nnmail-activate 'nnbabyl)
319 (goto-char (point-min))
320 (search-forward "\n\n" nil t)
323 (while (re-search-backward "^X-Gnus-Newsgroup: " beg t)
324 (delete-region (point) (progn (forward-line 1) (point)))))
325 (let ((nnmail-split-methods
326 (if (stringp group) (list (list group ""))
327 nnmail-split-methods)))
328 (setq result (car (nnbabyl-save-mail))))
329 (set-buffer nnbabyl-mbox-buffer)
330 (goto-char (point-max))
331 (search-backward "\n\^_")
332 (goto-char (match-end 0))
337 nnbabyl-group-alist nnbabyl-active-file)))
340 (defun nnbabyl-request-replace-article (article group buffer)
341 (nnbabyl-possibly-change-newsgroup group)
343 (set-buffer nnbabyl-mbox-buffer)
344 (goto-char (point-min))
345 (if (not (search-forward (nnbabyl-article-string article) nil t))
347 (nnbabyl-delete-mail t t)
348 (insert-buffer-substring buffer)
353 ;;; Low-Level Interface
355 ;; If FORCE, delete article no matter how many X-Gnus-Newsgroup
356 ;; headers there are. If LEAVE-DELIM, don't delete the Unix mbox
358 (defun nnbabyl-delete-mail (&optional force leave-delim)
359 ;; Delete the current X-Gnus-Newsgroup line.
362 (progn (beginning-of-line) (point))
363 (progn (forward-line 1) (point))))
364 ;; Beginning of the article.
370 (re-search-backward (concat "^" nnbabyl-mail-delimiter) nil t)
371 (if leave-delim (progn (forward-line 1) (point))
372 (match-beginning 0)))
375 (or (and (re-search-forward (concat "^" nnbabyl-mail-delimiter)
377 (if (and (not (bobp)) leave-delim)
378 (progn (forward-line -2) (point))
379 (match-beginning 0)))
381 (goto-char (point-min))
382 ;; Only delete the article if no other groups owns it as well.
383 (if (or force (not (re-search-forward "^X-Gnus-Newsgroup: " nil t)))
384 (delete-region (point-min) (point-max))))))
386 (defun nnbabyl-possibly-change-newsgroup (newsgroup)
387 (if (or (not nnbabyl-mbox-buffer)
388 (not (buffer-name nnbabyl-mbox-buffer)))
389 (save-excursion (nnbabyl-read-mbox)))
390 (or nnbabyl-group-alist
391 (nnmail-activate 'nnbabyl))
393 (if (assoc newsgroup nnbabyl-group-alist)
394 (setq nnbabyl-current-group newsgroup)
395 (setq nnbabyl-status-string "No such group in file")
398 (defun nnbabyl-article-string (article)
399 (concat "\nX-Gnus-Newsgroup: " nnbabyl-current-group ":"
400 (int-to-string article) " "))
402 (defun nnbabyl-insert-lines ()
403 "Insert how many lines and chars there are in the body of the mail."
406 (goto-char (point-min))
407 (if (search-forward "\n\n" nil t)
409 ;; There may be an EOOH line here...
410 (if (looking-at "\\*\\*\\* EOOH \\*\\*\\*")
411 (search-forward "\n\n" nil t))
412 (setq chars (- (point-max) (point)))
413 (setq lines (- (count-lines (point) (point-max)) 1))
414 ;; Move back to the end of the headers.
415 (goto-char (point-min))
416 (search-forward "\n\n" nil t)
419 (if (re-search-backward "^Lines: " nil t)
420 (delete-region (point) (progn (forward-line 1) (point)))))
421 (insert (format "Lines: %d\n" lines))
424 (defun nnbabyl-save-mail ()
425 ;; Called narrowed to an article.
426 (let ((group-art (nreverse (nnmail-article-group 'nnbabyl-active-number))))
427 (nnbabyl-insert-lines)
428 (nnmail-insert-xref group-art)
429 (nnbabyl-insert-newsgroup-line group-art)
430 (run-hooks 'nnbabyl-prepare-save-mail-hook)
433 (defun nnbabyl-insert-newsgroup-line (group-art)
435 (goto-char (point-min))
436 (while (looking-at "From ")
437 (replace-match "Mail-from: From " t t)
439 ;; If there is a C-l at the beginning of the narrowed region, this
440 ;; isn't really a "save", but rather a "scan".
441 (goto-char (point-min))
442 (or (looking-at "\^L")
444 (insert "\^L\n0, unseen,,\n*** EOOH ***\n")
445 (goto-char (point-max))
447 (if (search-forward "\n\n" nil t)
451 (insert (format "X-Gnus-Newsgroup: %s:%d %s\n"
452 (car (car group-art)) (cdr (car group-art))
453 (current-time-string)))
454 (setq group-art (cdr group-art)))))
457 (defun nnbabyl-active-number (group)
458 ;; Find the next article number in GROUP.
459 (let ((active (car (cdr (assoc group nnbabyl-group-alist)))))
461 (setcdr active (1+ (cdr active)))
462 ;; This group is new, so we create a new entry for it.
463 ;; This might be a bit naughty... creating groups on the drop of
464 ;; a hat, but I don't know...
465 (setq nnbabyl-group-alist (cons (list group (setq active (cons 1 1)))
466 nnbabyl-group-alist)))
469 (defun nnbabyl-read-mbox ()
470 (nnmail-activate 'nnbabyl)
471 (or (file-exists-p nnbabyl-mbox-file)
473 (set-buffer (setq nnbabyl-mbox-buffer
474 (create-file-buffer nnbabyl-mbox-file)))
475 (setq buffer-file-name nnbabyl-mbox-file)
476 (insert "BABYL OPTIONS:\n\n\^_")
477 (write-region (point-min) (point-max) nnbabyl-mbox-file t 'nomesg)))
479 (if (and nnbabyl-mbox-buffer
480 (buffer-name nnbabyl-mbox-buffer)
482 (set-buffer nnbabyl-mbox-buffer)
483 (= (buffer-size) (nth 7 (file-attributes nnbabyl-mbox-file)))))
486 (let ((delim (concat "^" nnbabyl-mail-delimiter))
488 (set-buffer (setq nnbabyl-mbox-buffer
489 (nnheader-find-file-noselect
490 nnbabyl-mbox-file nil 'raw)))
491 (buffer-disable-undo (current-buffer))
493 (setq buffer-read-only nil)
496 (goto-char (point-min))
497 (re-search-forward delim nil t)
498 (setq start (match-end 0))
499 (while (re-search-forward delim nil t)
500 (setq end (match-end 0))
501 (or (search-backward "\nX-Gnus-Newsgroup: " start t)
507 (narrow-to-region start end)
509 (setq end (point-max))))))
510 (goto-char (setq start end)))
511 (and (buffer-modified-p (current-buffer)) (save-buffer))
512 (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)))))
514 (defun nnbabyl-remove-incoming-delims ()
515 (goto-char (point-min))
516 (while (search-forward "\^_" nil t)
517 (replace-match "?" t t)))
519 (defun nnbabyl-get-new-mail (&optional group)
520 "Read new incoming mail."
521 (let* ((spools (nnmail-get-spool-files group))
525 (if (or (not nnbabyl-get-new-mail) (not nnmail-spool-file))
527 ;; We go through all the existing spool files and split the
531 (file-exists-p (car spools))
532 (> (nth 7 (file-attributes (car spools))) 0)
534 (and gnus-verbose-backends
535 (message "nnbabyl: Reading incoming mail..."))
536 (if (not (setq incoming
539 (concat nnbabyl-mbox-file "-Incoming"))))
541 (setq incomings (cons incoming incomings))
543 (setq group (nnmail-get-split-group (car spools) group-in))
544 (let* ((nnmail-prepare-incoming-hook
545 (cons 'nnbabyl-remove-incoming-delims
546 nnmail-prepare-incoming-hook))
548 (setq in-buf (nnmail-split-incoming
549 incoming 'nnbabyl-save-mail t group))
551 (goto-char (point-min))
552 (while (search-forward "\n\^_\n" nil t)
554 (set-buffer nnbabyl-mbox-buffer)
555 (goto-char (point-max))
556 (search-backward "\n\^_" nil t)
557 (goto-char (match-end 0))
558 (insert-buffer-substring in-buf)
559 (kill-buffer in-buf))))))
560 (setq spools (cdr spools)))
561 ;; If we did indeed read any incoming spools, we save all info.
562 (and (buffer-modified-p nnbabyl-mbox-buffer)
564 (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
565 (set-buffer nnbabyl-mbox-buffer)
567 (if incomings (run-hooks 'nnmail-read-incoming-hook))
569 (setq incoming (car incomings))
570 (and nnmail-delete-incoming
571 (file-exists-p incoming)
572 (file-writable-p incoming)
573 (delete-file incoming))
574 (setq incomings (cdr incomings))))))
578 ;;; nnbabyl.el ends here