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eec82323 | 1 | ;;; nnmh.el --- mhspool access for Gnus |
16409b0b | 2 | |
e84b4b86 | 3 | ;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
114f9c96 | 4 | ;; 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
eec82323 | 5 | |
6748645f | 6 | ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org> |
23f87bed | 7 | ;; Masanobu UMEDA <umerin@flab.flab.fujitsu.junet> |
eec82323 LMI |
8 | ;; Keywords: news, mail |
9 | ||
10 | ;; This file is part of GNU Emacs. | |
11 | ||
5e809f55 | 12 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
eec82323 | 13 | ;; it under the terms of the GNU General Public License as published by |
5e809f55 GM |
14 | ;; the Free Software Foundation, either version 3 of the License, or |
15 | ;; (at your option) any later version. | |
eec82323 LMI |
16 | |
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. | |
21 | ||
22 | ;; You should have received a copy of the GNU General Public License | |
5e809f55 | 23 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
eec82323 LMI |
24 | |
25 | ;;; Commentary: | |
26 | ||
27 | ;; Based on nnspool.el by Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>. | |
28 | ;; For an overview of what the interface functions do, please see the | |
29 | ;; Gnus sources. | |
30 | ||
31 | ;;; Code: | |
32 | ||
33 | (require 'nnheader) | |
34 | (require 'nnmail) | |
35 | (require 'gnus-start) | |
36 | (require 'nnoo) | |
349f4e97 | 37 | (eval-when-compile (require 'cl)) |
eec82323 LMI |
38 | |
39 | (nnoo-declare nnmh) | |
40 | ||
41 | (defvoo nnmh-directory message-directory | |
23f87bed | 42 | "Mail spool directory.") |
eec82323 LMI |
43 | |
44 | (defvoo nnmh-get-new-mail t | |
23f87bed | 45 | "If non-nil, nnmh will check the incoming mail file and split the mail.") |
eec82323 LMI |
46 | |
47 | (defvoo nnmh-prepare-save-mail-hook nil | |
23f87bed | 48 | "Hook run narrowed to an article before saving.") |
eec82323 LMI |
49 | |
50 | (defvoo nnmh-be-safe nil | |
23f87bed | 51 | "If non-nil, nnmh will check all articles to make sure whether they are new or not. |
16409b0b GM |
52 | Go through the .nnmh-articles file and compare with the actual |
53 | articles in this folder. The articles that are \"new\" will be marked | |
54 | as unread by Gnus.") | |
eec82323 LMI |
55 | |
56 | \f | |
57 | ||
58 | (defconst nnmh-version "nnmh 1.0" | |
59 | "nnmh version.") | |
60 | ||
61 | (defvoo nnmh-current-directory nil | |
62 | "Current news group directory.") | |
63 | ||
64 | (defvoo nnmh-status-string "") | |
65 | (defvoo nnmh-group-alist nil) | |
16409b0b GM |
66 | ;; Don't even think about setting this variable. It does not exist. |
67 | ;; Forget about it. Uh-huh. Nope. Nobody here. It's only bound | |
68 | ;; dynamically by certain functions in nndraft. | |
69 | (defvar nnmh-allow-delete-final nil) | |
eec82323 LMI |
70 | |
71 | \f | |
72 | ||
73 | ;;; Interface functions. | |
74 | ||
75 | (nnoo-define-basics nnmh) | |
76 | ||
77 | (deffoo nnmh-retrieve-headers (articles &optional newsgroup server fetch-old) | |
c9de7755 | 78 | (with-current-buffer nntp-server-buffer |
eec82323 LMI |
79 | (erase-buffer) |
80 | (let* ((file nil) | |
81 | (number (length articles)) | |
82 | (large (and (numberp nnmail-large-newsgroup) | |
83 | (> number nnmail-large-newsgroup))) | |
84 | (count 0) | |
16409b0b | 85 | (file-name-coding-system nnmail-pathname-coding-system) |
eec82323 LMI |
86 | beg article) |
87 | (nnmh-possibly-change-directory newsgroup server) | |
88 | ;; We don't support fetching by Message-ID. | |
89 | (if (stringp (car articles)) | |
90 | 'headers | |
91 | (while articles | |
92 | (when (and (file-exists-p | |
93 | (setq file (concat (file-name-as-directory | |
94 | nnmh-current-directory) | |
95 | (int-to-string | |
96 | (setq article (pop articles)))))) | |
97 | (not (file-directory-p file))) | |
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 count (1+ count)) | |
109 | ||
110 | (and large | |
111 | (zerop (% count 20)) | |
6748645f | 112 | (nnheader-message 5 "nnmh: Receiving headers... %d%%" |
16409b0b | 113 | (/ (* count 100) number)))) |
eec82323 LMI |
114 | |
115 | (when large | |
6748645f | 116 | (nnheader-message 5 "nnmh: Receiving headers...done")) |
eec82323 LMI |
117 | |
118 | (nnheader-fold-continuation-lines) | |
119 | 'headers)))) | |
120 | ||
121 | (deffoo nnmh-open-server (server &optional defs) | |
122 | (nnoo-change-server 'nnmh server defs) | |
123 | (when (not (file-exists-p nnmh-directory)) | |
124 | (condition-case () | |
125 | (make-directory nnmh-directory t) | |
126 | (error t))) | |
127 | (cond | |
128 | ((not (file-exists-p nnmh-directory)) | |
129 | (nnmh-close-server) | |
130 | (nnheader-report 'nnmh "Couldn't create directory: %s" nnmh-directory)) | |
131 | ((not (file-directory-p (file-truename nnmh-directory))) | |
132 | (nnmh-close-server) | |
133 | (nnheader-report 'nnmh "Not a directory: %s" nnmh-directory)) | |
134 | (t | |
135 | (nnheader-report 'nnmh "Opened server %s using directory %s" | |
136 | server nnmh-directory) | |
137 | t))) | |
138 | ||
139 | (deffoo nnmh-request-article (id &optional newsgroup server buffer) | |
140 | (nnmh-possibly-change-directory newsgroup server) | |
141 | (let ((file (if (stringp id) | |
142 | nil | |
143 | (concat nnmh-current-directory (int-to-string id)))) | |
16409b0b | 144 | (file-name-coding-system nnmail-pathname-coding-system) |
eec82323 LMI |
145 | (nntp-server-buffer (or buffer nntp-server-buffer))) |
146 | (and (stringp file) | |
147 | (file-exists-p file) | |
148 | (not (file-directory-p file)) | |
149 | (save-excursion (nnmail-find-file file)) | |
e9bd5782 | 150 | (string-to-number (file-name-nondirectory file))))) |
eec82323 LMI |
151 | |
152 | (deffoo nnmh-request-group (group &optional server dont-check) | |
6748645f LMI |
153 | (nnheader-init-server-buffer) |
154 | (nnmh-possibly-change-directory group server) | |
eec82323 | 155 | (let ((pathname (nnmail-group-pathname group nnmh-directory)) |
16409b0b | 156 | (file-name-coding-system nnmail-pathname-coding-system) |
eec82323 LMI |
157 | dir) |
158 | (cond | |
159 | ((not (file-directory-p pathname)) | |
160 | (nnheader-report | |
161 | 'nnmh "Can't select group (no such directory): %s" group)) | |
162 | (t | |
163 | (setq nnmh-current-directory pathname) | |
164 | (and nnmh-get-new-mail | |
165 | nnmh-be-safe | |
166 | (nnmh-update-gnus-unreads group)) | |
167 | (cond | |
168 | (dont-check | |
169 | (nnheader-report 'nnmh "Selected group %s" group) | |
170 | t) | |
171 | (t | |
172 | ;; Re-scan the directory if it's on a foreign system. | |
173 | (nnheader-re-read-dir pathname) | |
174 | (setq dir | |
175 | (sort | |
01c52d31 | 176 | (mapcar 'string-to-number |
eec82323 LMI |
177 | (directory-files pathname nil "^[0-9]+$" t)) |
178 | '<)) | |
16409b0b GM |
179 | (cond |
180 | (dir | |
181 | (setq nnmh-group-alist | |
182 | (delq (assoc group nnmh-group-alist) nnmh-group-alist)) | |
183 | (push (list group (cons (car dir) (car (last dir)))) | |
184 | nnmh-group-alist) | |
185 | (nnheader-report 'nnmh "Selected group %s" group) | |
186 | (nnheader-insert | |
187 | "211 %d %d %d %s\n" (length dir) (car dir) | |
188 | (car (last dir)) group)) | |
189 | (t | |
190 | (nnheader-report 'nnmh "Empty group %s" group) | |
191 | (nnheader-insert (format "211 0 1 0 %s\n" group)))))))))) | |
eec82323 LMI |
192 | |
193 | (deffoo nnmh-request-scan (&optional group server) | |
194 | (nnmail-get-new-mail 'nnmh nil nnmh-directory group)) | |
195 | ||
196 | (deffoo nnmh-request-list (&optional server dir) | |
197 | (nnheader-insert "") | |
6748645f | 198 | (nnmh-possibly-change-directory nil server) |
16409b0b GM |
199 | (let ((file-name-coding-system nnmail-pathname-coding-system) |
200 | (nnmh-toplev | |
201 | (file-truename (or dir (file-name-as-directory nnmh-directory))))) | |
eec82323 LMI |
202 | (nnmh-request-list-1 nnmh-toplev)) |
203 | (setq nnmh-group-alist (nnmail-get-active)) | |
204 | t) | |
205 | ||
206 | (defvar nnmh-toplev) | |
207 | (defun nnmh-request-list-1 (dir) | |
208 | (setq dir (expand-file-name dir)) | |
209 | ;; Recurse down all directories. | |
eecdcaf5 LMI |
210 | (let ((files (nnheader-directory-files dir t nil t)) |
211 | (max 0) | |
212 | min rdir attributes num) | |
eec82323 | 213 | ;; Recurse down directories. |
eecdcaf5 LMI |
214 | (dolist (rdir files) |
215 | (setq attributes (file-attributes rdir)) | |
216 | (when (null (nth 0 attributes)) | |
217 | (setq file (file-name-nondirectory rdir)) | |
218 | (when (string-match "^[0-9]+$" file) | |
219 | (setq num (string-to-number file)) | |
220 | (setq max (max max num)) | |
221 | (when (or (null min) | |
222 | (< num min)) | |
223 | (setq min num)))) | |
224 | (when (and (eq (nth 0 attributes) t) ; Is a directory | |
225 | (> (nth 1 attributes) 2) ; Has sub-directories | |
6748645f LMI |
226 | (file-readable-p rdir) |
227 | (not (equal (file-truename rdir) | |
228 | (file-truename dir)))) | |
eecdcaf5 LMI |
229 | (nnmh-request-list-1 rdir))) |
230 | ;; For each directory, generate an active file line. | |
231 | (unless (string= (expand-file-name nnmh-toplev) dir) | |
232 | (when min | |
c9de7755 | 233 | (with-current-buffer nntp-server-buffer |
eec82323 LMI |
234 | (goto-char (point-max)) |
235 | (insert | |
236 | (format | |
83ec6f20 | 237 | "%s %.0f %.0f y\n" |
eec82323 LMI |
238 | (progn |
239 | (string-match | |
240 | (regexp-quote | |
241 | (file-truename (file-name-as-directory | |
242 | (expand-file-name nnmh-toplev)))) | |
243 | dir) | |
eecdcaf5 | 244 | (mm-string-to-multibyte ;Why? Isn't it multibyte already? |
23f87bed MB |
245 | (mm-encode-coding-string |
246 | (nnheader-replace-chars-in-string | |
247 | (substring dir (match-end 0)) | |
248 | ?/ ?.) | |
249 | nnmail-pathname-coding-system))) | |
eecdcaf5 | 250 | max min)))))) |
eec82323 LMI |
251 | t) |
252 | ||
253 | (deffoo nnmh-request-newgroups (date &optional server) | |
254 | (nnmh-request-list server)) | |
255 | ||
256 | (deffoo nnmh-request-expire-articles (articles newsgroup | |
257 | &optional server force) | |
258 | (nnmh-possibly-change-directory newsgroup server) | |
9b3ebcb6 MB |
259 | (let ((is-old t) |
260 | (nnmail-expiry-target | |
261 | (or (gnus-group-find-parameter newsgroup 'expiry-target t) | |
262 | nnmail-expiry-target)) | |
263 | article rest mod-time) | |
6748645f | 264 | (nnheader-init-server-buffer) |
eec82323 LMI |
265 | |
266 | (while (and articles is-old) | |
267 | (setq article (concat nnmh-current-directory | |
268 | (int-to-string (car articles)))) | |
269 | (when (setq mod-time (nth 5 (file-attributes article))) | |
270 | (if (and (nnmh-deletable-article-p newsgroup (car articles)) | |
271 | (setq is-old | |
272 | (nnmail-expired-article-p newsgroup mod-time force))) | |
273 | (progn | |
0d972486 SZ |
274 | ;; Allow a special target group. -- jcn |
275 | (unless (eq nnmail-expiry-target 'delete) | |
276 | (with-temp-buffer | |
277 | (nnmh-request-article (car articles) | |
278 | newsgroup server (current-buffer)) | |
279 | (nnmail-expiry-target-group | |
280 | nnmail-expiry-target newsgroup))) | |
eec82323 LMI |
281 | (nnheader-message 5 "Deleting article %s in %s..." |
282 | article newsgroup) | |
283 | (condition-case () | |
284 | (funcall nnmail-delete-file-function article) | |
285 | (file-error | |
286 | (nnheader-message 1 "Couldn't delete article %s in %s" | |
287 | article newsgroup) | |
288 | (push (car articles) rest)))) | |
289 | (push (car articles) rest))) | |
290 | (setq articles (cdr articles))) | |
6748645f | 291 | (nnheader-message 5 "") |
eec82323 LMI |
292 | (nconc rest articles))) |
293 | ||
294 | (deffoo nnmh-close-group (group &optional server) | |
295 | t) | |
296 | ||
c9fc72fa | 297 | (deffoo nnmh-request-move-article (article group server accept-form |
01c52d31 | 298 | &optional last move-is-internal) |
eec82323 LMI |
299 | (let ((buf (get-buffer-create " *nnmh move*")) |
300 | result) | |
301 | (and | |
302 | (nnmh-deletable-article-p group article) | |
303 | (nnmh-request-article article group server) | |
c9de7755 | 304 | (with-current-buffer buf |
eec82323 LMI |
305 | (erase-buffer) |
306 | (insert-buffer-substring nntp-server-buffer) | |
307 | (setq result (eval accept-form)) | |
308 | (kill-buffer (current-buffer)) | |
309 | result) | |
310 | (progn | |
311 | (nnmh-possibly-change-directory group server) | |
312 | (condition-case () | |
313 | (funcall nnmail-delete-file-function | |
314 | (concat nnmh-current-directory (int-to-string article))) | |
315 | (file-error nil)))) | |
316 | result)) | |
317 | ||
318 | (deffoo nnmh-request-accept-article (group &optional server last noinsert) | |
319 | (nnmh-possibly-change-directory group server) | |
320 | (nnmail-check-syntax) | |
321 | (when nnmail-cache-accepted-message-ids | |
c9fc72fa | 322 | (nnmail-cache-insert (nnmail-fetch-field "message-id") |
23f87bed MB |
323 | group |
324 | (nnmail-fetch-field "subject") | |
325 | (nnmail-fetch-field "from"))) | |
6748645f | 326 | (nnheader-init-server-buffer) |
eec82323 LMI |
327 | (prog1 |
328 | (if (stringp group) | |
6748645f LMI |
329 | (if noinsert |
330 | (nnmh-active-number group) | |
331 | (car (nnmh-save-mail | |
332 | (list (cons group (nnmh-active-number group))) | |
333 | noinsert))) | |
334 | (let ((res (nnmail-article-group 'nnmh-active-number))) | |
335 | (if (and (null res) | |
336 | (yes-or-no-p "Moved to `junk' group; delete article? ")) | |
337 | 'junk | |
338 | (car (nnmh-save-mail res noinsert))))) | |
eec82323 LMI |
339 | (when (and last nnmail-cache-accepted-message-ids) |
340 | (nnmail-cache-close)))) | |
341 | ||
342 | (deffoo nnmh-request-replace-article (article group buffer) | |
343 | (nnmh-possibly-change-directory group) | |
c9de7755 | 344 | (with-current-buffer buffer |
eec82323 LMI |
345 | (nnmh-possibly-create-directory group) |
346 | (ignore-errors | |
347 | (nnmail-write-region | |
348 | (point-min) (point-max) | |
349 | (concat nnmh-current-directory (int-to-string article)) | |
350 | nil (if (nnheader-be-verbose 5) nil 'nomesg)) | |
351 | t))) | |
352 | ||
353 | (deffoo nnmh-request-create-group (group &optional server args) | |
6748645f | 354 | (nnheader-init-server-buffer) |
eec82323 LMI |
355 | (unless (assoc group nnmh-group-alist) |
356 | (let (active) | |
357 | (push (list group (setq active (cons 1 0))) | |
358 | nnmh-group-alist) | |
359 | (nnmh-possibly-create-directory group) | |
360 | (nnmh-possibly-change-directory group server) | |
01c52d31 MB |
361 | (let ((articles (mapcar 'string-to-number |
362 | (directory-files | |
363 | nnmh-current-directory nil "^[0-9]+$")))) | |
eec82323 LMI |
364 | (when articles |
365 | (setcar active (apply 'min articles)) | |
366 | (setcdr active (apply 'max articles)))))) | |
367 | t) | |
368 | ||
369 | (deffoo nnmh-request-delete-group (group &optional force server) | |
370 | (nnmh-possibly-change-directory group server) | |
371 | ;; Delete all articles in GROUP. | |
372 | (if (not force) | |
373 | () ; Don't delete the articles. | |
374 | (let ((articles (directory-files nnmh-current-directory t "^[0-9]+$"))) | |
375 | (while articles | |
376 | (when (file-writable-p (car articles)) | |
377 | (nnheader-message 5 "Deleting article %s in %s..." | |
378 | (car articles) group) | |
379 | (funcall nnmail-delete-file-function (car articles))) | |
380 | (setq articles (cdr articles)))) | |
381 | ;; Try to delete the directory itself. | |
382 | (ignore-errors | |
383 | (delete-directory nnmh-current-directory))) | |
384 | ;; Remove the group from all structures. | |
385 | (setq nnmh-group-alist | |
386 | (delq (assoc group nnmh-group-alist) nnmh-group-alist) | |
387 | nnmh-current-directory nil) | |
388 | t) | |
389 | ||
390 | (deffoo nnmh-request-rename-group (group new-name &optional server) | |
391 | (nnmh-possibly-change-directory group server) | |
392 | (let ((new-dir (nnmail-group-pathname new-name nnmh-directory)) | |
393 | (old-dir (nnmail-group-pathname group nnmh-directory))) | |
394 | (when (ignore-errors | |
395 | (make-directory new-dir t) | |
396 | t) | |
397 | ;; We move the articles file by file instead of renaming | |
398 | ;; the directory -- there may be subgroups in this group. | |
399 | ;; One might be more clever, I guess. | |
400 | (let ((files (nnheader-article-to-file-alist old-dir))) | |
401 | (while files | |
402 | (rename-file | |
403 | (concat old-dir (cdar files)) | |
404 | (concat new-dir (cdar files))) | |
405 | (pop files))) | |
406 | (when (<= (length (directory-files old-dir)) 2) | |
407 | (ignore-errors | |
408 | (delete-directory old-dir))) | |
409 | ;; That went ok, so we change the internal structures. | |
410 | (let ((entry (assoc group nnmh-group-alist))) | |
411 | (when entry | |
412 | (setcar entry new-name)) | |
413 | (setq nnmh-current-directory nil) | |
414 | t)))) | |
415 | ||
416 | (nnoo-define-skeleton nnmh) | |
417 | ||
418 | \f | |
419 | ;;; Internal functions. | |
420 | ||
421 | (defun nnmh-possibly-change-directory (newsgroup &optional server) | |
422 | (when (and server | |
423 | (not (nnmh-server-opened server))) | |
424 | (nnmh-open-server server)) | |
425 | (when newsgroup | |
a8a90155 | 426 | (let ((pathname (nnmail-group-pathname newsgroup nnmh-directory)) |
16409b0b | 427 | (file-name-coding-system nnmail-pathname-coding-system)) |
eec82323 LMI |
428 | (if (file-directory-p pathname) |
429 | (setq nnmh-current-directory pathname) | |
23f87bed | 430 | (nnheader-report 'nnmh "Not a directory: %s" nnmh-directory))))) |
eec82323 LMI |
431 | |
432 | (defun nnmh-possibly-create-directory (group) | |
433 | (let (dir dirs) | |
434 | (setq dir (nnmail-group-pathname group nnmh-directory)) | |
435 | (while (not (file-directory-p dir)) | |
436 | (push dir dirs) | |
437 | (setq dir (file-name-directory (directory-file-name dir)))) | |
438 | (while dirs | |
439 | (when (make-directory (directory-file-name (car dirs))) | |
440 | (error "Could not create directory %s" (car dirs))) | |
441 | (nnheader-message 5 "Creating mail directory %s" (car dirs)) | |
442 | (setq dirs (cdr dirs))))) | |
443 | ||
444 | (defun nnmh-save-mail (group-art &optional noinsert) | |
445 | "Called narrowed to an article." | |
446 | (unless noinsert | |
447 | (nnmail-insert-lines) | |
448 | (nnmail-insert-xref group-art)) | |
449 | (run-hooks 'nnmail-prepare-save-mail-hook) | |
450 | (run-hooks 'nnmh-prepare-save-mail-hook) | |
451 | (goto-char (point-min)) | |
452 | (while (looking-at "From ") | |
453 | (replace-match "X-From-Line: ") | |
454 | (forward-line 1)) | |
455 | ;; We save the article in all the newsgroups it belongs in. | |
456 | (let ((ga group-art) | |
457 | first) | |
458 | (while ga | |
459 | (nnmh-possibly-create-directory (caar ga)) | |
460 | (let ((file (concat (nnmail-group-pathname | |
461 | (caar ga) nnmh-directory) | |
462 | (int-to-string (cdar ga))))) | |
463 | (if first | |
464 | ;; It was already saved, so we just make a hard link. | |
465 | (funcall nnmail-crosspost-link-function first file t) | |
466 | ;; Save the article. | |
467 | (nnmail-write-region (point-min) (point-max) file nil nil) | |
468 | (setq first file))) | |
469 | (setq ga (cdr ga)))) | |
470 | group-art) | |
471 | ||
472 | (defun nnmh-active-number (group) | |
473 | "Compute the next article number in GROUP." | |
474 | (let ((active (cadr (assoc group nnmh-group-alist))) | |
a8a90155 | 475 | (dir (nnmail-group-pathname group nnmh-directory)) |
16409b0b GM |
476 | (file-name-coding-system nnmail-pathname-coding-system) |
477 | file) | |
eec82323 LMI |
478 | (unless active |
479 | ;; The group wasn't known to nnmh, so we just create an active | |
480 | ;; entry for it. | |
481 | (setq active (cons 1 0)) | |
482 | (push (list group active) nnmh-group-alist) | |
483 | (unless (file-exists-p dir) | |
6748645f | 484 | (gnus-make-directory dir)) |
eec82323 LMI |
485 | ;; Find the highest number in the group. |
486 | (let ((files (sort | |
01c52d31 MB |
487 | (mapcar 'string-to-number |
488 | (directory-files dir nil "^[0-9]+$")) | |
eec82323 LMI |
489 | '>))) |
490 | (when files | |
491 | (setcdr active (car files))))) | |
492 | (setcdr active (1+ (cdr active))) | |
16409b0b GM |
493 | (while (or |
494 | ;; See whether the file exists... | |
495 | (file-exists-p | |
496 | (setq file (concat (nnmail-group-pathname group nnmh-directory) | |
497 | (int-to-string (cdr active))))) | |
498 | ;; ... or there is a buffer that will make that file exist | |
499 | ;; in the future. | |
500 | (get-file-buffer file)) | |
501 | ;; Skip past that file. | |
eec82323 LMI |
502 | (setcdr active (1+ (cdr active)))) |
503 | (cdr active))) | |
504 | ||
505 | (defun nnmh-update-gnus-unreads (group) | |
506 | ;; Go through the .nnmh-articles file and compare with the actual | |
507 | ;; articles in this folder. The articles that are "new" will be | |
508 | ;; marked as unread by Gnus. | |
509 | (let* ((dir nnmh-current-directory) | |
01c52d31 | 510 | (files (sort (mapcar 'string-to-number |
eec82323 LMI |
511 | (directory-files nnmh-current-directory |
512 | nil "^[0-9]+$" t)) | |
513 | '<)) | |
514 | (nnmh-file (concat dir ".nnmh-articles")) | |
515 | new articles) | |
516 | ;; Load the .nnmh-articles file. | |
517 | (when (file-exists-p nnmh-file) | |
518 | (setq articles | |
519 | (let (nnmh-newsgroup-articles) | |
520 | (ignore-errors (load nnmh-file nil t t)) | |
521 | nnmh-newsgroup-articles))) | |
522 | ;; Add all new articles to the `new' list. | |
523 | (let ((art files)) | |
524 | (while art | |
525 | (unless (assq (car art) articles) | |
526 | (push (car art) new)) | |
527 | (setq art (cdr art)))) | |
528 | ;; Remove all deleted articles. | |
529 | (let ((art articles)) | |
530 | (while art | |
531 | (unless (memq (caar art) files) | |
532 | (setq articles (delq (car art) articles))) | |
533 | (setq art (cdr art)))) | |
534 | ;; Check whether the articles really are the ones that Gnus thinks | |
535 | ;; they are by looking at the time-stamps. | |
536 | (let ((arts articles) | |
537 | art) | |
538 | (while (setq art (pop arts)) | |
539 | (when (not (equal | |
540 | (nth 5 (file-attributes | |
541 | (concat dir (int-to-string (car art))))) | |
542 | (cdr art))) | |
543 | (setq articles (delq art articles)) | |
544 | (push (car art) new)))) | |
545 | ;; Go through all the new articles and add them, and their | |
546 | ;; time-stamps, to the list. | |
547 | (setq articles | |
548 | (nconc articles | |
549 | (mapcar | |
550 | (lambda (art) | |
551 | (cons art | |
552 | (nth 5 (file-attributes | |
553 | (concat dir (int-to-string art)))))) | |
554 | new))) | |
555 | ;; Make Gnus mark all new articles as unread. | |
556 | (when new | |
557 | (gnus-make-articles-unread | |
558 | (gnus-group-prefixed-name group (list 'nnmh "")) | |
559 | (setq new (sort new '<)))) | |
560 | ;; Sort the article list with highest numbers first. | |
561 | (setq articles (sort articles (lambda (art1 art2) | |
562 | (> (car art1) (car art2))))) | |
563 | ;; Finally write this list back to the .nnmh-articles file. | |
16409b0b | 564 | (with-temp-file nnmh-file |
eec82323 LMI |
565 | (insert ";; Gnus article active file for " group "\n\n") |
566 | (insert "(setq nnmh-newsgroup-articles '") | |
567 | (gnus-prin1 articles) | |
568 | (insert ")\n")))) | |
569 | ||
570 | (defun nnmh-deletable-article-p (group article) | |
571 | "Say whether ARTICLE in GROUP can be deleted." | |
572 | (let ((path (concat nnmh-current-directory (int-to-string article)))) | |
573 | ;; Writable. | |
574 | (and (file-writable-p path) | |
6748645f LMI |
575 | (or |
576 | ;; We can never delete the last article in the group. | |
577 | (not (eq (cdr (nth 1 (assoc group nnmh-group-alist))) | |
578 | article)) | |
579 | ;; Well, we can. | |
580 | nnmh-allow-delete-final)))) | |
eec82323 LMI |
581 | |
582 | (provide 'nnmh) | |
583 | ||
584 | ;;; nnmh.el ends here |