Commit | Line | Data |
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41487370 | 1 | ;;; nnmh.el --- mhspool access for Gnus |
b578f267 | 2 | |
41487370 LMI |
3 | ;; Copyright (C) 1995 Free Software Foundation, Inc. |
4 | ||
5 | ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no> | |
6 | ;; Masanobu UMEDA <umerin@flab.flab.fujitsu.junet> | |
7 | ;; Keywords: news, mail | |
8 | ||
9 | ;; This file is part of GNU Emacs. | |
10 | ||
11 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
12 | ;; it under the terms of the GNU General Public License as published by | |
13 | ;; the Free Software Foundation; either version 2, or (at your option) | |
14 | ;; any later version. | |
15 | ||
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
b578f267 EN |
22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
23 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
24 | ;; Boston, MA 02111-1307, USA. | |
41487370 LMI |
25 | |
26 | ;;; Commentary: | |
27 | ||
28 | ;; Based on nnspool.el by Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>. | |
29 | ;; For an overview of what the interface functions do, please see the | |
30 | ;; Gnus sources. | |
31 | ||
32 | ;;; Code: | |
33 | ||
34 | (require 'nnheader) | |
35 | (require 'rmail) | |
36 | (require 'nnmail) | |
37 | (require 'gnus) | |
38 | ||
39 | (defvar nnmh-directory "~/Mail/" | |
40 | "*Mail spool directory.") | |
41 | ||
42 | (defvar nnmh-get-new-mail t | |
43 | "*If non-nil, nnmh will check the incoming mail file and split the mail.") | |
44 | ||
45 | (defvar nnmh-prepare-save-mail-hook nil | |
46 | "*Hook run narrowed to an article before saving.") | |
47 | ||
48 | (defvar nnmh-be-safe nil | |
49 | "*If non-nil, nnmh will check all articles to make sure whether they are new or not.") | |
50 | ||
51 | \f | |
52 | ||
53 | (defconst nnmh-version "nnmh 1.0" | |
54 | "nnmh version.") | |
55 | ||
56 | (defvar nnmh-current-directory nil | |
57 | "Current news group directory.") | |
58 | ||
59 | (defvar nnmh-status-string "") | |
60 | (defvar nnmh-group-alist nil) | |
61 | ||
62 | \f | |
63 | ||
64 | (defvar nnmh-current-server nil) | |
65 | (defvar nnmh-server-alist nil) | |
66 | (defvar nnmh-server-variables | |
67 | (list | |
68 | (list 'nnmh-directory nnmh-directory) | |
69 | (list 'nnmh-get-new-mail nnmh-get-new-mail) | |
70 | '(nnmh-current-directory nil) | |
71 | '(nnmh-status-string "") | |
72 | '(nnmh-group-alist))) | |
73 | ||
74 | \f | |
75 | ||
76 | ;;; Interface functions. | |
77 | ||
78 | (defun nnmh-retrieve-headers (sequence &optional newsgroup server) | |
79 | (save-excursion | |
80 | (set-buffer nntp-server-buffer) | |
81 | (erase-buffer) | |
82 | (let* ((file nil) | |
83 | (number (length sequence)) | |
84 | (large (and (numberp nnmail-large-newsgroup) | |
85 | (> number nnmail-large-newsgroup))) | |
86 | (count 0) | |
87 | beg article) | |
88 | (nnmh-possibly-change-directory newsgroup) | |
89 | (if (stringp (car sequence)) | |
90 | 'headers | |
91 | (while sequence | |
92 | (setq article (car sequence)) | |
93 | (setq file | |
94 | (concat nnmh-current-directory (int-to-string article))) | |
95 | (if (and (file-exists-p file) | |
96 | (not (file-directory-p file))) | |
97 | (progn | |
98 | (insert (format "221 %d Article retrieved.\n" article)) | |
99 | (setq beg (point)) | |
100 | (nnheader-insert-head file) | |
101 | (goto-char beg) | |
102 | (if (search-forward "\n\n" nil t) | |
103 | (forward-char -1) | |
104 | (goto-char (point-max)) | |
105 | (insert "\n\n")) | |
106 | (insert ".\n") | |
107 | (delete-region (point) (point-max)))) | |
108 | (setq sequence (cdr sequence)) | |
109 | (setq count (1+ count)) | |
110 | ||
111 | (and large | |
112 | (zerop (% count 20)) | |
113 | (message "nnmh: Receiving headers... %d%%" | |
114 | (/ (* count 100) number)))) | |
115 | ||
116 | (and large (message "nnmh: Receiving headers...done")) | |
117 | ||
118 | ;; Fold continuation lines. | |
119 | (goto-char (point-min)) | |
120 | (while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t) | |
121 | (replace-match " " t t)) | |
122 | 'headers)))) | |
123 | ||
124 | (defun nnmh-open-server (server &optional defs) | |
125 | (nnheader-init-server-buffer) | |
126 | (if (equal server nnmh-current-server) | |
127 | t | |
128 | (if nnmh-current-server | |
129 | (setq nnmh-server-alist | |
130 | (cons (list nnmh-current-server | |
131 | (nnheader-save-variables nnmh-server-variables)) | |
132 | nnmh-server-alist))) | |
133 | (let ((state (assoc server nnmh-server-alist))) | |
134 | (if state | |
135 | (progn | |
136 | (nnheader-restore-variables (nth 1 state)) | |
137 | (setq nnmh-server-alist (delq state nnmh-server-alist))) | |
138 | (nnheader-set-init-variables nnmh-server-variables defs))) | |
139 | (setq nnmh-current-server server))) | |
140 | ||
141 | (defun nnmh-close-server (&optional server) | |
142 | t) | |
143 | ||
144 | (defun nnmh-server-opened (&optional server) | |
145 | (and (equal server nnmh-current-server) | |
146 | nntp-server-buffer | |
147 | (buffer-name nntp-server-buffer))) | |
148 | ||
149 | (defun nnmh-status-message (&optional server) | |
150 | nnmh-status-string) | |
151 | ||
152 | (defun nnmh-request-article (id &optional newsgroup server buffer) | |
153 | (nnmh-possibly-change-directory newsgroup) | |
154 | (let ((file (if (stringp id) | |
155 | nil | |
156 | (concat nnmh-current-directory (int-to-string id)))) | |
157 | (nntp-server-buffer (or buffer nntp-server-buffer))) | |
158 | (and (stringp file) | |
159 | (file-exists-p file) | |
160 | (not (file-directory-p file)) | |
161 | (save-excursion (nnmail-find-file file))))) | |
162 | ||
163 | (defun nnmh-request-group (group &optional server dont-check) | |
164 | (and nnmh-get-new-mail (or dont-check (nnmh-get-new-mail group))) | |
165 | (let ((pathname (nnmh-article-pathname group nnmh-directory)) | |
166 | dir) | |
167 | (if (file-directory-p pathname) | |
168 | (progn | |
169 | (setq nnmh-current-directory pathname) | |
170 | (and nnmh-get-new-mail | |
171 | nnmh-be-safe | |
172 | (nnmh-update-gnus-unreads group)) | |
173 | (or dont-check | |
174 | (progn | |
175 | (setq dir | |
176 | (sort | |
177 | (mapcar | |
178 | (function | |
179 | (lambda (name) | |
180 | (string-to-int name))) | |
181 | (directory-files pathname nil "^[0-9]+$" t)) | |
182 | '<)) | |
183 | (save-excursion | |
184 | (set-buffer nntp-server-buffer) | |
185 | (erase-buffer) | |
186 | (if dir | |
187 | (insert (format "211 %d %d %d %s\n" (length dir) | |
188 | (car dir) | |
189 | (progn (while (cdr dir) | |
190 | (setq dir (cdr dir))) | |
191 | (car dir)) | |
192 | group)) | |
193 | (insert (format "211 0 1 0 %s\n" group)))))) | |
194 | t) | |
195 | (setq nnmh-status-string "No such group") | |
196 | nil))) | |
197 | ||
198 | (defun nnmh-request-list (&optional server dir) | |
199 | (or dir | |
200 | (save-excursion | |
201 | (set-buffer nntp-server-buffer) | |
202 | (erase-buffer) | |
203 | (setq dir (file-truename (file-name-as-directory nnmh-directory))))) | |
204 | (setq dir (expand-file-name dir)) | |
205 | ;; Recurse down all directories. | |
206 | (let ((dirs (and (file-readable-p dir) | |
207 | (> (nth 1 (file-attributes (file-chase-links dir))) 2) | |
208 | (directory-files dir t nil t)))) | |
209 | (while dirs | |
210 | (if (and (not (string-match "/\\.\\.?$" (car dirs))) | |
211 | (file-directory-p (car dirs)) | |
212 | (file-readable-p (car dirs))) | |
213 | (nnmh-request-list nil (car dirs))) | |
214 | (setq dirs (cdr dirs)))) | |
215 | ;; For each directory, generate an active file line. | |
216 | (if (not (string= (expand-file-name nnmh-directory) dir)) | |
217 | (let ((files (mapcar | |
218 | (lambda (name) (string-to-int name)) | |
219 | (directory-files dir nil "^[0-9]+$" t)))) | |
220 | (if (null files) | |
221 | () | |
222 | (save-excursion | |
223 | (set-buffer nntp-server-buffer) | |
224 | (goto-char (point-max)) | |
225 | (insert | |
226 | (format | |
227 | "%s %d %d y\n" | |
228 | (progn | |
229 | (string-match | |
230 | (file-truename (file-name-as-directory | |
231 | (expand-file-name nnmh-directory))) dir) | |
232 | (nnmail-replace-chars-in-string | |
233 | (substring dir (match-end 0)) ?/ ?.)) | |
234 | (apply (function max) files) | |
235 | (apply (function min) files))))))) | |
236 | (setq nnmh-group-alist (nnmail-get-active)) | |
237 | (and server nnmh-get-new-mail (nnmh-get-new-mail)) | |
238 | t) | |
239 | ||
240 | (defun nnmh-request-newgroups (date &optional server) | |
241 | (nnmh-request-list server)) | |
242 | ||
243 | (defun nnmh-request-post (&optional server) | |
244 | (mail-send-and-exit nil)) | |
245 | ||
246 | (defalias 'nnmh-request-post-buffer 'nnmail-request-post-buffer) | |
247 | ||
248 | (defun nnmh-request-expire-articles (articles newsgroup &optional server force) | |
249 | (nnmh-possibly-change-directory newsgroup) | |
250 | (let* ((days (or (and nnmail-expiry-wait-function | |
251 | (funcall nnmail-expiry-wait-function newsgroup)) | |
252 | nnmail-expiry-wait)) | |
253 | (active-articles | |
254 | (mapcar | |
255 | (function | |
256 | (lambda (name) | |
257 | (string-to-int name))) | |
258 | (directory-files nnmh-current-directory nil "^[0-9]+$" t))) | |
259 | (max-article (and active-articles (apply 'max active-articles))) | |
260 | (is-old t) | |
261 | article rest mod-time) | |
262 | (nnmail-activate 'nnmh) | |
263 | ||
264 | (while (and articles is-old) | |
265 | (setq article (concat nnmh-current-directory | |
266 | (int-to-string (car articles)))) | |
267 | (if (setq mod-time (nth 5 (file-attributes article))) | |
268 | (if (and (or (not nnmail-keep-last-article) | |
269 | (not max-article) | |
270 | (not (= (car articles) max-article))) | |
271 | (not (equal mod-time '(0 0))) | |
272 | (or force | |
273 | (setq is-old | |
274 | (> (nnmail-days-between | |
275 | (current-time-string) | |
276 | (current-time-string mod-time)) | |
277 | days)))) | |
278 | (progn | |
279 | (and gnus-verbose-backends | |
280 | (message "Deleting article %s..." article)) | |
281 | (condition-case () | |
282 | (delete-file article) | |
283 | (file-error | |
284 | (setq rest (cons (car articles) rest))))) | |
285 | (setq rest (cons (car articles) rest)))) | |
286 | (setq articles (cdr articles))) | |
287 | (message "") | |
288 | (nconc rest articles))) | |
289 | ||
290 | (defun nnmh-close-group (group &optional server) | |
291 | t) | |
292 | ||
293 | (defun nnmh-request-move-article | |
294 | (article group server accept-form &optional last) | |
295 | (let ((buf (get-buffer-create " *nnmh move*")) | |
296 | result) | |
297 | (and | |
298 | (nnmh-request-article article group server) | |
299 | (save-excursion | |
300 | (set-buffer buf) | |
301 | (insert-buffer-substring nntp-server-buffer) | |
302 | (setq result (eval accept-form)) | |
303 | (kill-buffer (current-buffer)) | |
304 | result) | |
305 | (condition-case () | |
306 | (delete-file (concat nnmh-current-directory | |
307 | (int-to-string article))) | |
308 | (file-error nil))) | |
309 | result)) | |
310 | ||
311 | (defun nnmh-request-accept-article (group &optional last) | |
312 | (if (stringp group) | |
313 | (and | |
314 | (nnmail-activate 'nnmh) | |
315 | ;; We trick the choosing function into believing that only one | |
a7acbbe4 | 316 | ;; group is available. |
41487370 LMI |
317 | (let ((nnmail-split-methods (list (list group "")))) |
318 | (car (nnmh-save-mail)))) | |
319 | (and | |
320 | (nnmail-activate 'nnmh) | |
321 | (car (nnmh-save-mail))))) | |
322 | ||
323 | (defun nnmh-request-replace-article (article group buffer) | |
324 | (nnmh-possibly-change-directory group) | |
325 | (save-excursion | |
326 | (set-buffer buffer) | |
327 | (nnmh-possibly-create-directory group) | |
328 | (condition-case () | |
329 | (progn | |
330 | (write-region (point-min) (point-max) | |
331 | (concat nnmh-current-directory (int-to-string article)) | |
332 | nil (if gnus-verbose-backends nil 'nomesg)) | |
333 | t) | |
334 | (error nil)))) | |
335 | ||
336 | \f | |
337 | ;;; Internal functions. | |
338 | ||
339 | (defun nnmh-possibly-change-directory (newsgroup) | |
340 | (if newsgroup | |
341 | (let ((pathname (nnmh-article-pathname newsgroup nnmh-directory))) | |
342 | (if (file-directory-p pathname) | |
343 | (setq nnmh-current-directory pathname) | |
344 | (error "No such newsgroup: %s" newsgroup))))) | |
345 | ||
346 | (defun nnmh-possibly-create-directory (group) | |
347 | (let (dir dirs) | |
348 | (setq dir (nnmh-article-pathname group nnmh-directory)) | |
349 | (while (not (file-directory-p dir)) | |
350 | (setq dirs (cons dir dirs)) | |
351 | (setq dir (file-name-directory (directory-file-name dir)))) | |
352 | (while dirs | |
353 | (if (make-directory (directory-file-name (car dirs))) | |
354 | (error "Could not create directory %s" (car dirs))) | |
355 | (and gnus-verbose-backends | |
356 | (message "Creating mail directory %s" (car dirs))) | |
357 | (setq dirs (cdr dirs))))) | |
358 | ||
359 | (defun nnmh-save-mail () | |
360 | "Called narrowed to an article." | |
361 | (let ((group-art (nreverse (nnmail-article-group 'nnmh-active-number)))) | |
362 | (nnmail-insert-lines) | |
363 | (nnmail-insert-xref group-art) | |
364 | (run-hooks 'nnmh-prepare-save-mail-hook) | |
365 | (goto-char (point-min)) | |
366 | (while (looking-at "From ") | |
367 | (replace-match "X-From-Line: ") | |
368 | (forward-line 1)) | |
369 | ;; We save the article in all the newsgroups it belongs in. | |
370 | (let ((ga group-art) | |
371 | first) | |
372 | (while ga | |
373 | (nnmh-possibly-create-directory (car (car ga))) | |
374 | (let ((file (concat (nnmh-article-pathname | |
375 | (car (car ga)) nnmh-directory) | |
376 | (int-to-string (cdr (car ga)))))) | |
377 | (if first | |
378 | ;; It was already saved, so we just make a hard link. | |
379 | (add-name-to-file first file t) | |
380 | ;; Save the article. | |
381 | (write-region (point-min) (point-max) file nil nil) | |
382 | (setq first file))) | |
383 | (setq ga (cdr ga)))) | |
384 | group-art)) | |
385 | ||
386 | (defun nnmh-active-number (group) | |
387 | "Compute the next article number in GROUP." | |
388 | (let ((active (car (cdr (assoc group nnmh-group-alist))))) | |
389 | ;; The group wasn't known to nnmh, so we just create an active | |
390 | ;; entry for it. | |
391 | (or active | |
392 | (progn | |
393 | (setq active (cons 1 0)) | |
394 | (setq nnmh-group-alist (cons (list group active) nnmh-group-alist)))) | |
395 | (setcdr active (1+ (cdr active))) | |
396 | (while (file-exists-p | |
397 | (concat (nnmh-article-pathname group nnmh-directory) | |
398 | (int-to-string (cdr active)))) | |
399 | (setcdr active (1+ (cdr active)))) | |
400 | (cdr active))) | |
401 | ||
402 | (defun nnmh-article-pathname (group mail-dir) | |
403 | "Make pathname for GROUP." | |
404 | (let ((mail-dir (file-name-as-directory (expand-file-name mail-dir)))) | |
405 | (if (file-directory-p (concat mail-dir group)) | |
406 | (concat mail-dir group "/") | |
407 | (concat mail-dir (nnmail-replace-chars-in-string group ?. ?/) "/")))) | |
408 | ||
409 | (defun nnmh-get-new-mail (&optional group) | |
410 | "Read new incoming mail." | |
411 | (let* ((spools (nnmail-get-spool-files group)) | |
412 | (group-in group) | |
413 | incoming incomings) | |
414 | (if (or (not nnmh-get-new-mail) (not nnmail-spool-file)) | |
415 | () | |
416 | ;; We first activate all the groups. | |
417 | (or nnmh-group-alist | |
418 | (nnmh-request-list)) | |
419 | ;; The we go through all the existing spool files and split the | |
420 | ;; mail from each. | |
421 | (while spools | |
422 | (and | |
423 | (file-exists-p (car spools)) | |
424 | (> (nth 7 (file-attributes (car spools))) 0) | |
425 | (progn | |
426 | (and gnus-verbose-backends | |
427 | (message "nnmh: Reading incoming mail...")) | |
428 | (if (not (setq incoming | |
429 | (nnmail-move-inbox | |
430 | (car spools) | |
431 | (concat (file-name-as-directory nnmh-directory) | |
432 | "Incoming")))) | |
433 | () | |
434 | (setq incomings (cons incoming incomings)) | |
435 | (setq group (nnmail-get-split-group (car spools) group-in)) | |
436 | (nnmail-split-incoming incoming 'nnmh-save-mail nil group)))) | |
437 | (setq spools (cdr spools))) | |
438 | ;; If we did indeed read any incoming spools, we save all info. | |
439 | (if incoming | |
440 | (message "nnmh: Reading incoming mail...done")) | |
441 | (while incomings | |
442 | (setq incoming (car incomings)) | |
443 | (and nnmail-delete-incoming | |
444 | (file-exists-p incoming) | |
445 | (file-writable-p incoming) | |
446 | (delete-file incoming)) | |
447 | (setq incomings (cdr incomings)))))) | |
448 | ||
449 | ||
450 | (defun nnmh-update-gnus-unreads (group) | |
451 | ;; Go through the .nnmh-articles file and compare with the actual | |
452 | ;; articles in this folder. The articles that are "new" will be | |
453 | ;; marked as unread by Gnus. | |
454 | (let* ((dir nnmh-current-directory) | |
455 | (files (sort (mapcar (function (lambda (name) (string-to-int name))) | |
456 | (directory-files nnmh-current-directory | |
457 | nil "^[0-9]+$" t)) '<)) | |
458 | (nnmh-file (concat dir ".nnmh-articles")) | |
459 | new articles) | |
460 | ;; Load the .nnmh-articles file. | |
461 | (if (file-exists-p nnmh-file) | |
462 | (setq articles | |
463 | (let (nnmh-newsgroup-articles) | |
464 | (condition-case nil (load nnmh-file nil t t) (error nil)) | |
465 | nnmh-newsgroup-articles))) | |
466 | ;; Add all new articles to the `new' list. | |
467 | (let ((art files)) | |
468 | (while art | |
469 | (if (not (assq (car art) articles)) (setq new (cons (car art) new))) | |
470 | (setq art (cdr art)))) | |
471 | ;; Remove all deleted articles. | |
472 | (let ((art articles)) | |
473 | (while art | |
474 | (if (not (memq (car (car art)) files)) | |
475 | (setq articles (delq (car art) articles))) | |
476 | (setq art (cdr art)))) | |
477 | ;; Check whether the highest-numbered articles really are the ones | |
478 | ;; that Gnus thinks they are by looking at the time-stamps. | |
479 | (let ((art articles)) | |
480 | (while (and art | |
481 | (not (equal | |
482 | (nth 5 (file-attributes | |
483 | (concat dir (int-to-string (car (car art)))))) | |
484 | (cdr (car art))))) | |
485 | (setq articles (delq (car art) articles)) | |
486 | (setq new (cons (car (car art)) new)) | |
487 | (setq art (cdr art)))) | |
488 | ;; Go through all the new articles and add them, and their | |
489 | ;; time-stamps to the list. | |
490 | (let ((n new)) | |
491 | (while n | |
492 | (setq articles | |
493 | (cons (cons | |
494 | (car n) | |
495 | (nth 5 (file-attributes | |
496 | (concat dir (int-to-string (car n)))))) | |
497 | articles)) | |
498 | (setq n (cdr n)))) | |
499 | ;; Make Gnus mark all new articles as unread. | |
500 | (or (zerop (length new)) | |
501 | (gnus-make-articles-unread | |
502 | (gnus-group-prefixed-name group (list 'nnmh "")) | |
503 | (setq new (sort new '<)))) | |
504 | ;; Sort the article list with highest numbers first. | |
505 | (setq articles (sort articles (lambda (art1 art2) | |
506 | (> (car art1) (car art2))))) | |
507 | ;; Finally write this list back to the .nnmh-articles file. | |
508 | (save-excursion | |
509 | (set-buffer (get-buffer-create "*nnmh out*")) | |
510 | (insert ";; Gnus article active file for " group "\n\n") | |
511 | (insert "(setq nnmh-newsgroup-articles '") | |
512 | (insert (prin1-to-string articles) ")\n") | |
513 | (write-region (point-min) (point-max) nnmh-file nil 'nomesg) | |
514 | (kill-buffer (current-buffer))))) | |
515 | ||
516 | (provide 'nnmh) | |
517 | ||
518 | ;;; nnmh.el ends here |