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eec82323 | 1 | ;;; nnfolder.el --- mail folder access for Gnus |
16409b0b GM |
2 | ;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000 |
3 | ;; Free Software Foundation, Inc. | |
eec82323 LMI |
4 | |
5 | ;; Author: Scott Byer <byer@mv.us.adobe.com> | |
6748645f | 6 | ;; Lars Magne Ingebrigtsen <larsi@gnus.org> |
eec82323 LMI |
7 | ;; Masanobu UMEDA <umerin@flab.flab.fujitsu.junet> |
8 | ;; Keywords: mail | |
9 | ||
10 | ;; This file is part of GNU Emacs. | |
11 | ||
12 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
13 | ;; it under the terms of the GNU General Public License as published by | |
14 | ;; the Free Software Foundation; either version 2, or (at your option) | |
15 | ;; any later version. | |
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 | |
23 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
24 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
25 | ;; Boston, MA 02111-1307, USA. | |
26 | ||
27 | ;;; Commentary: | |
28 | ||
29 | ;;; Code: | |
30 | ||
31 | (require 'nnheader) | |
32 | (require 'message) | |
33 | (require 'nnmail) | |
34 | (require 'nnoo) | |
6748645f | 35 | (eval-when-compile (require 'cl)) |
eec82323 LMI |
36 | (require 'gnus-util) |
37 | ||
38 | (nnoo-declare nnfolder) | |
39 | ||
40 | (defvoo nnfolder-directory (expand-file-name message-directory) | |
41 | "The name of the nnfolder directory.") | |
42 | ||
43 | (defvoo nnfolder-active-file | |
16409b0b | 44 | (nnheader-concat nnfolder-directory "active") |
eec82323 LMI |
45 | "The name of the active file.") |
46 | ||
47 | ;; I renamed this variable to something more in keeping with the general GNU | |
48 | ;; style. -SLB | |
49 | ||
50 | (defvoo nnfolder-ignore-active-file nil | |
dcf4ae73 | 51 | "If non-nil, the active file is ignored. |
16409b0b GM |
52 | This causes nnfolder to do some extra work in order to determine the |
53 | true active ranges of an mbox file. Note that the active file is | |
dcf4ae73 | 54 | still saved, but its values are not used. This costs some extra time |
16409b0b | 55 | when scanning an mbox when opening it.") |
eec82323 LMI |
56 | |
57 | (defvoo nnfolder-distrust-mbox nil | |
16409b0b GM |
58 | "If non-nil, the folder will be distrusted. |
59 | This means that nnfolder will not trust the user with respect to | |
60 | inserting unaccounted for mail in the middle of an mbox file. This | |
61 | can greatly slow down scans, which now must scan the entire file for | |
62 | unmarked messages. When nil, scans occur forward from the last marked | |
63 | message, a huge time saver for large mailboxes.") | |
eec82323 LMI |
64 | |
65 | (defvoo nnfolder-newsgroups-file | |
16409b0b | 66 | (concat (file-name-as-directory nnfolder-directory) "newsgroups") |
eec82323 LMI |
67 | "Mail newsgroups description file.") |
68 | ||
69 | (defvoo nnfolder-get-new-mail t | |
70 | "If non-nil, nnfolder will check the incoming mail file and split the mail.") | |
71 | ||
72 | (defvoo nnfolder-prepare-save-mail-hook nil | |
73 | "Hook run narrowed to an article before saving.") | |
74 | ||
75 | (defvoo nnfolder-save-buffer-hook nil | |
76 | "Hook run before saving the nnfolder mbox buffer.") | |
77 | ||
78 | (defvoo nnfolder-inhibit-expiry nil | |
79 | "If non-nil, inhibit expiry.") | |
80 | ||
81 | \f | |
82 | ||
83 | (defconst nnfolder-version "nnfolder 1.0" | |
84 | "nnfolder version.") | |
85 | ||
86 | (defconst nnfolder-article-marker "X-Gnus-Article-Number: " | |
87 | "String used to demarcate what the article number for a message is.") | |
88 | ||
89 | (defvoo nnfolder-current-group nil) | |
90 | (defvoo nnfolder-current-buffer nil) | |
91 | (defvoo nnfolder-status-string "") | |
92 | (defvoo nnfolder-group-alist nil) | |
93 | (defvoo nnfolder-buffer-alist nil) | |
94 | (defvoo nnfolder-scantime-alist nil) | |
95 | (defvoo nnfolder-active-timestamp nil) | |
16409b0b GM |
96 | (defvoo nnfolder-active-file-coding-system mm-text-coding-system) |
97 | (defvoo nnfolder-active-file-coding-system-for-write | |
98 | nnmail-active-file-coding-system) | |
99 | (defvoo nnfolder-file-coding-system mm-text-coding-system) | |
100 | (defvoo nnfolder-file-coding-system-for-write nnheader-file-coding-system | |
101 | "Coding system for save nnfolder file. | |
102 | If NIL, NNFOLDER-FILE-CODING-SYSTEM is used.") | |
eec82323 LMI |
103 | |
104 | \f | |
105 | ||
106 | ;;; Interface functions | |
107 | ||
108 | (nnoo-define-basics nnfolder) | |
109 | ||
110 | (deffoo nnfolder-retrieve-headers (articles &optional group server fetch-old) | |
111 | (save-excursion | |
112 | (set-buffer nntp-server-buffer) | |
113 | (erase-buffer) | |
6748645f | 114 | (let (article start stop) |
eec82323 LMI |
115 | (nnfolder-possibly-change-group group server) |
116 | (when nnfolder-current-buffer | |
117 | (set-buffer nnfolder-current-buffer) | |
118 | (goto-char (point-min)) | |
119 | (if (stringp (car articles)) | |
120 | 'headers | |
6748645f | 121 | (while (setq article (pop articles)) |
eec82323 | 122 | (set-buffer nnfolder-current-buffer) |
6748645f | 123 | (when (nnfolder-goto-article article) |
eec82323 | 124 | (setq start (point)) |
16409b0b GM |
125 | (setq stop (if (search-forward "\n\n" nil t) |
126 | (1- (point)) | |
127 | (point-max))) | |
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128 | (set-buffer nntp-server-buffer) |
129 | (insert (format "221 %d Article retrieved.\n" article)) | |
130 | (insert-buffer-substring nnfolder-current-buffer start stop) | |
131 | (goto-char (point-max)) | |
6748645f | 132 | (insert ".\n"))) |
eec82323 LMI |
133 | |
134 | (set-buffer nntp-server-buffer) | |
135 | (nnheader-fold-continuation-lines) | |
136 | 'headers))))) | |
137 | ||
138 | (deffoo nnfolder-open-server (server &optional defs) | |
139 | (nnoo-change-server 'nnfolder server defs) | |
140 | (nnmail-activate 'nnfolder t) | |
141 | (gnus-make-directory nnfolder-directory) | |
142 | (cond | |
143 | ((not (file-exists-p nnfolder-directory)) | |
144 | (nnfolder-close-server) | |
145 | (nnheader-report 'nnfolder "Couldn't create directory: %s" | |
146 | nnfolder-directory)) | |
147 | ((not (file-directory-p (file-truename nnfolder-directory))) | |
148 | (nnfolder-close-server) | |
149 | (nnheader-report 'nnfolder "Not a directory: %s" nnfolder-directory)) | |
150 | (t | |
151 | (nnmail-activate 'nnfolder) | |
152 | (nnheader-report 'nnfolder "Opened server %s using directory %s" | |
153 | server nnfolder-directory) | |
154 | t))) | |
155 | ||
156 | (deffoo nnfolder-request-close () | |
157 | (let ((alist nnfolder-buffer-alist)) | |
158 | (while alist | |
159 | (nnfolder-close-group (caar alist) nil t) | |
160 | (setq alist (cdr alist)))) | |
161 | (nnoo-close-server 'nnfolder) | |
162 | (setq nnfolder-buffer-alist nil | |
163 | nnfolder-group-alist nil)) | |
164 | ||
165 | (deffoo nnfolder-request-article (article &optional group server buffer) | |
166 | (nnfolder-possibly-change-group group server) | |
167 | (save-excursion | |
168 | (set-buffer nnfolder-current-buffer) | |
169 | (goto-char (point-min)) | |
6748645f | 170 | (when (nnfolder-goto-article article) |
eec82323 | 171 | (let (start stop) |
eec82323 LMI |
172 | (setq start (point)) |
173 | (forward-line 1) | |
174 | (unless (and (nnmail-search-unix-mail-delim) | |
175 | (forward-line -1)) | |
176 | (goto-char (point-max))) | |
177 | (setq stop (point)) | |
178 | (let ((nntp-server-buffer (or buffer nntp-server-buffer))) | |
179 | (set-buffer nntp-server-buffer) | |
180 | (erase-buffer) | |
181 | (insert-buffer-substring nnfolder-current-buffer start stop) | |
182 | (goto-char (point-min)) | |
183 | (while (looking-at "From ") | |
184 | (delete-char 5) | |
185 | (insert "X-From-Line: ") | |
186 | (forward-line 1)) | |
187 | (if (numberp article) | |
188 | (cons nnfolder-current-group article) | |
189 | (goto-char (point-min)) | |
eec82323 | 190 | (cons nnfolder-current-group |
16409b0b GM |
191 | (if (search-forward (concat "\n" nnfolder-article-marker) |
192 | nil t) | |
193 | (string-to-int | |
194 | (buffer-substring | |
195 | (point) (progn (end-of-line) (point)))) | |
196 | -1)))))))) | |
eec82323 LMI |
197 | |
198 | (deffoo nnfolder-request-group (group &optional server dont-check) | |
199 | (nnfolder-possibly-change-group group server t) | |
200 | (save-excursion | |
201 | (if (not (assoc group nnfolder-group-alist)) | |
202 | (nnheader-report 'nnfolder "No such group: %s" group) | |
203 | (if dont-check | |
204 | (progn | |
205 | (nnheader-report 'nnfolder "Selected group %s" group) | |
206 | t) | |
207 | (let* ((active (assoc group nnfolder-group-alist)) | |
208 | (group (car active)) | |
209 | (range (cadr active))) | |
210 | (cond | |
211 | ((null active) | |
212 | (nnheader-report 'nnfolder "No such group: %s" group)) | |
213 | ((null nnfolder-current-group) | |
214 | (nnheader-report 'nnfolder "Empty group: %s" group)) | |
215 | (t | |
216 | (nnheader-report 'nnfolder "Selected group %s" group) | |
217 | (nnheader-insert "211 %d %d %d %s\n" | |
218 | (1+ (- (cdr range) (car range))) | |
219 | (car range) (cdr range) group)))))))) | |
220 | ||
221 | (deffoo nnfolder-request-scan (&optional group server) | |
222 | (nnfolder-possibly-change-group nil server) | |
223 | (when nnfolder-get-new-mail | |
224 | (nnfolder-possibly-change-group group server) | |
225 | (nnmail-get-new-mail | |
226 | 'nnfolder | |
227 | (lambda () | |
228 | (let ((bufs nnfolder-buffer-alist)) | |
229 | (save-excursion | |
230 | (while bufs | |
231 | (if (not (gnus-buffer-live-p (nth 1 (car bufs)))) | |
232 | (setq nnfolder-buffer-alist | |
233 | (delq (car bufs) nnfolder-buffer-alist)) | |
234 | (set-buffer (nth 1 (car bufs))) | |
235 | (nnfolder-save-buffer) | |
236 | (kill-buffer (current-buffer))) | |
237 | (setq bufs (cdr bufs)))))) | |
238 | nnfolder-directory | |
239 | group))) | |
240 | ||
241 | ;; Don't close the buffer if we're not shutting down the server. This way, | |
242 | ;; we can keep the buffer in the group buffer cache, and not have to grovel | |
243 | ;; over the buffer again unless we add new mail to it or modify it in some | |
244 | ;; way. | |
245 | ||
246 | (deffoo nnfolder-close-group (group &optional server force) | |
247 | ;; Make sure we _had_ the group open. | |
248 | (when (or (assoc group nnfolder-buffer-alist) | |
249 | (equal group nnfolder-current-group)) | |
250 | (let ((inf (assoc group nnfolder-buffer-alist))) | |
251 | (when inf | |
252 | (when (and nnfolder-current-group | |
253 | nnfolder-current-buffer) | |
254 | (push (list nnfolder-current-group nnfolder-current-buffer) | |
255 | nnfolder-buffer-alist)) | |
256 | (setq nnfolder-buffer-alist | |
257 | (delq inf nnfolder-buffer-alist)) | |
258 | (setq nnfolder-current-buffer (cadr inf) | |
259 | nnfolder-current-group (car inf)))) | |
260 | (when (and nnfolder-current-buffer | |
261 | (buffer-name nnfolder-current-buffer)) | |
262 | (save-excursion | |
263 | (set-buffer nnfolder-current-buffer) | |
264 | ;; If the buffer was modified, write the file out now. | |
265 | (nnfolder-save-buffer) | |
266 | ;; If we're shutting the server down, we need to kill the | |
267 | ;; buffer and remove it from the open buffer list. Or, of | |
268 | ;; course, if we're trying to minimize our space impact. | |
269 | (kill-buffer (current-buffer)) | |
270 | (setq nnfolder-buffer-alist (delq (assoc group nnfolder-buffer-alist) | |
271 | nnfolder-buffer-alist))))) | |
272 | (setq nnfolder-current-group nil | |
273 | nnfolder-current-buffer nil) | |
274 | t) | |
275 | ||
276 | (deffoo nnfolder-request-create-group (group &optional server args) | |
277 | (nnfolder-possibly-change-group nil server) | |
278 | (nnmail-activate 'nnfolder) | |
279 | (when group | |
280 | (unless (assoc group nnfolder-group-alist) | |
281 | (push (list group (cons 1 0)) nnfolder-group-alist) | |
16409b0b | 282 | (nnfolder-save-active nnfolder-group-alist nnfolder-active-file) |
a8151ef7 | 283 | (nnfolder-read-folder group))) |
eec82323 LMI |
284 | t) |
285 | ||
286 | (deffoo nnfolder-request-list (&optional server) | |
287 | (nnfolder-possibly-change-group nil server) | |
288 | (save-excursion | |
16409b0b | 289 | (let ((nnmail-file-coding-system nnfolder-active-file-coding-system)) |
58724016 KH |
290 | (nnmail-find-file nnfolder-active-file) |
291 | (setq nnfolder-group-alist (nnmail-get-active))) | |
eec82323 LMI |
292 | t)) |
293 | ||
294 | (deffoo nnfolder-request-newgroups (date &optional server) | |
295 | (nnfolder-possibly-change-group nil server) | |
296 | (nnfolder-request-list server)) | |
297 | ||
298 | (deffoo nnfolder-request-list-newsgroups (&optional server) | |
299 | (nnfolder-possibly-change-group nil server) | |
300 | (save-excursion | |
16409b0b GM |
301 | (let ((nnmail-file-coding-system nnfolder-file-coding-system)) |
302 | (nnmail-find-file nnfolder-newsgroups-file)))) | |
303 | ||
304 | ;; Return a list consisting of all article numbers existing in the | |
305 | ;; current folder. | |
306 | ||
307 | (defun nnfolder-existing-articles () | |
308 | (save-excursion | |
309 | (when nnfolder-current-buffer | |
310 | (set-buffer nnfolder-current-buffer) | |
311 | (goto-char (point-min)) | |
312 | (let ((marker (concat "\n" nnfolder-article-marker)) | |
313 | (number "[0-9]+") | |
314 | numbers) | |
315 | ||
316 | (while (and (search-forward marker nil t) | |
317 | (re-search-forward number nil t)) | |
318 | (let ((newnum (string-to-number (match-string 0)))) | |
319 | (if (nnmail-within-headers-p) | |
320 | (push newnum numbers)))) | |
321 | numbers)))) | |
eec82323 LMI |
322 | |
323 | (deffoo nnfolder-request-expire-articles | |
16409b0b | 324 | (articles newsgroup &optional server force) |
eec82323 LMI |
325 | (nnfolder-possibly-change-group newsgroup server) |
326 | (let* ((is-old t) | |
16409b0b GM |
327 | ;; The articles we have deleted so far. |
328 | (deleted-articles nil) | |
329 | ;; The articles that really exist and will | |
330 | ;; be expired if they are old enough. | |
331 | (maybe-expirable | |
332 | (gnus-intersection articles (nnfolder-existing-articles)))) | |
eec82323 LMI |
333 | (nnmail-activate 'nnfolder) |
334 | ||
335 | (save-excursion | |
336 | (set-buffer nnfolder-current-buffer) | |
16409b0b GM |
337 | ;; Since messages are sorted in arrival order and expired in the |
338 | ;; same order, we can stop as soon as we find a message that is | |
339 | ;; too old. | |
340 | (while (and maybe-expirable is-old) | |
eec82323 | 341 | (goto-char (point-min)) |
16409b0b GM |
342 | (when (and (nnfolder-goto-article (car maybe-expirable)) |
343 | (search-forward (concat "\n" nnfolder-article-marker) | |
344 | nil t)) | |
345 | (forward-sexp) | |
346 | (when (setq is-old | |
347 | (nnmail-expired-article-p | |
348 | newsgroup | |
349 | (buffer-substring | |
350 | (point) (progn (end-of-line) (point))) | |
351 | force nnfolder-inhibit-expiry)) | |
352 | (nnheader-message 5 "Deleting article %d..." | |
353 | (car maybe-expirable) newsgroup) | |
354 | (nnfolder-delete-mail) | |
355 | ;; Must remember which articles were actually deleted | |
356 | (push (car maybe-expirable) deleted-articles))) | |
357 | (setq maybe-expirable (cdr maybe-expirable))) | |
eec82323 LMI |
358 | (unless nnfolder-inhibit-expiry |
359 | (nnheader-message 5 "Deleting articles...done")) | |
360 | (nnfolder-save-buffer) | |
361 | (nnfolder-adjust-min-active newsgroup) | |
16409b0b GM |
362 | (nnfolder-save-active nnfolder-group-alist nnfolder-active-file) |
363 | (gnus-sorted-complement articles (nreverse deleted-articles))))) | |
eec82323 | 364 | |
6748645f LMI |
365 | (deffoo nnfolder-request-move-article (article group server |
366 | accept-form &optional last) | |
367 | (save-excursion | |
368 | (let ((buf (get-buffer-create " *nnfolder move*")) | |
369 | result) | |
370 | (and | |
371 | (nnfolder-request-article article group server) | |
372 | (save-excursion | |
373 | (set-buffer buf) | |
6748645f LMI |
374 | (erase-buffer) |
375 | (insert-buffer-substring nntp-server-buffer) | |
376 | (goto-char (point-min)) | |
377 | (while (re-search-forward | |
378 | (concat "^" nnfolder-article-marker) | |
16409b0b GM |
379 | (save-excursion (and (search-forward "\n\n" nil t) (point))) |
380 | t) | |
6748645f LMI |
381 | (delete-region (progn (beginning-of-line) (point)) |
382 | (progn (forward-line 1) (point)))) | |
383 | (setq result (eval accept-form)) | |
384 | (kill-buffer buf) | |
385 | result) | |
386 | (save-excursion | |
387 | (nnfolder-possibly-change-group group server) | |
388 | (set-buffer nnfolder-current-buffer) | |
389 | (goto-char (point-min)) | |
390 | (when (nnfolder-goto-article article) | |
391 | (nnfolder-delete-mail)) | |
392 | (when last | |
393 | (nnfolder-save-buffer) | |
394 | (nnfolder-adjust-min-active group) | |
16409b0b | 395 | (nnfolder-save-active nnfolder-group-alist nnfolder-active-file)))) |
6748645f | 396 | result))) |
eec82323 LMI |
397 | |
398 | (deffoo nnfolder-request-accept-article (group &optional server last) | |
6748645f LMI |
399 | (save-excursion |
400 | (nnfolder-possibly-change-group group server) | |
401 | (nnmail-check-syntax) | |
402 | (let ((buf (current-buffer)) | |
403 | result art-group) | |
404 | (goto-char (point-min)) | |
405 | (when (looking-at "X-From-Line: ") | |
406 | (replace-match "From ")) | |
407 | (and | |
408 | (nnfolder-request-list) | |
eec82323 | 409 | (save-excursion |
6748645f LMI |
410 | (set-buffer buf) |
411 | (goto-char (point-min)) | |
16409b0b GM |
412 | (if (search-forward "\n\n" nil t) |
413 | (forward-line -1) | |
414 | (goto-char (point-max))) | |
6748645f LMI |
415 | (while (re-search-backward (concat "^" nnfolder-article-marker) nil t) |
416 | (delete-region (point) (progn (forward-line 1) (point)))) | |
eec82323 | 417 | (when nnmail-cache-accepted-message-ids |
6748645f LMI |
418 | (nnmail-cache-insert (nnmail-fetch-field "message-id"))) |
419 | (setq result (if (stringp group) | |
420 | (list (cons group (nnfolder-active-number group))) | |
421 | (setq art-group | |
422 | (nnmail-article-group 'nnfolder-active-number)))) | |
423 | (if (and (null result) | |
424 | (yes-or-no-p "Moved to `junk' group; delete article? ")) | |
425 | (setq result 'junk) | |
426 | (setq result | |
427 | (car (nnfolder-save-mail result))))) | |
428 | (when last | |
429 | (save-excursion | |
430 | (nnfolder-possibly-change-folder (or (caar art-group) group)) | |
431 | (nnfolder-save-buffer) | |
432 | (when nnmail-cache-accepted-message-ids | |
433 | (nnmail-cache-close))))) | |
16409b0b | 434 | (nnfolder-save-active nnfolder-group-alist nnfolder-active-file) |
6748645f LMI |
435 | (unless result |
436 | (nnheader-report 'nnfolder "Couldn't store article")) | |
437 | result))) | |
eec82323 LMI |
438 | |
439 | (deffoo nnfolder-request-replace-article (article group buffer) | |
440 | (nnfolder-possibly-change-group group) | |
441 | (save-excursion | |
6748645f LMI |
442 | (set-buffer buffer) |
443 | (goto-char (point-min)) | |
444 | (let (xfrom) | |
445 | (while (re-search-forward "^X-From-Line: \\(.*\\)$" nil t) | |
446 | (setq xfrom (match-string 1)) | |
447 | (gnus-delete-line)) | |
448 | (goto-char (point-min)) | |
449 | (if xfrom | |
450 | (insert "From " xfrom "\n") | |
16409b0b | 451 | (unless (looking-at "From ") |
6748645f LMI |
452 | (insert "From nobody " (current-time-string) "\n")))) |
453 | (nnfolder-normalize-buffer) | |
eec82323 LMI |
454 | (set-buffer nnfolder-current-buffer) |
455 | (goto-char (point-min)) | |
6748645f | 456 | (if (not (nnfolder-goto-article article)) |
eec82323 | 457 | nil |
6748645f | 458 | (nnfolder-delete-mail) |
eec82323 LMI |
459 | (insert-buffer-substring buffer) |
460 | (nnfolder-save-buffer) | |
461 | t))) | |
462 | ||
463 | (deffoo nnfolder-request-delete-group (group &optional force server) | |
464 | (nnfolder-close-group group server t) | |
465 | ;; Delete all articles in GROUP. | |
466 | (if (not force) | |
467 | () ; Don't delete the articles. | |
468 | ;; Delete the file that holds the group. | |
469 | (ignore-errors | |
470 | (delete-file (nnfolder-group-pathname group)))) | |
471 | ;; Remove the group from all structures. | |
472 | (setq nnfolder-group-alist | |
473 | (delq (assoc group nnfolder-group-alist) nnfolder-group-alist) | |
474 | nnfolder-current-group nil | |
475 | nnfolder-current-buffer nil) | |
476 | ;; Save the active file. | |
16409b0b | 477 | (nnfolder-save-active nnfolder-group-alist nnfolder-active-file) |
eec82323 LMI |
478 | t) |
479 | ||
480 | (deffoo nnfolder-request-rename-group (group new-name &optional server) | |
481 | (nnfolder-possibly-change-group group server) | |
482 | (save-excursion | |
483 | (set-buffer nnfolder-current-buffer) | |
484 | (and (file-writable-p buffer-file-name) | |
485 | (ignore-errors | |
486 | (rename-file | |
487 | buffer-file-name | |
16409b0b GM |
488 | (let ((new-file (nnfolder-group-pathname new-name))) |
489 | (gnus-make-directory (file-name-directory new-file)) | |
490 | new-file)) | |
eec82323 LMI |
491 | t) |
492 | ;; That went ok, so we change the internal structures. | |
493 | (let ((entry (assoc group nnfolder-group-alist))) | |
494 | (and entry (setcar entry new-name)) | |
495 | (setq nnfolder-current-buffer nil | |
496 | nnfolder-current-group nil) | |
497 | ;; Save the new group alist. | |
16409b0b | 498 | (nnfolder-save-active nnfolder-group-alist nnfolder-active-file) |
eec82323 LMI |
499 | ;; We kill the buffer instead of renaming it and stuff. |
500 | (kill-buffer (current-buffer)) | |
501 | t)))) | |
502 | ||
a8151ef7 LMI |
503 | (defun nnfolder-request-regenerate (server) |
504 | (nnfolder-possibly-change-group nil server) | |
505 | (nnfolder-generate-active-file) | |
506 | t) | |
507 | ||
eec82323 LMI |
508 | \f |
509 | ;;; Internal functions. | |
510 | ||
511 | (defun nnfolder-adjust-min-active (group) | |
512 | ;; Find the lowest active article in this group. | |
513 | (let* ((active (cadr (assoc group nnfolder-group-alist))) | |
514 | (marker (concat "\n" nnfolder-article-marker)) | |
515 | (number "[0-9]+") | |
516 | (activemin (cdr active))) | |
517 | (save-excursion | |
518 | (set-buffer nnfolder-current-buffer) | |
519 | (goto-char (point-min)) | |
520 | (while (and (search-forward marker nil t) | |
521 | (re-search-forward number nil t)) | |
6748645f LMI |
522 | (let ((newnum (string-to-number (match-string 0)))) |
523 | (if (nnmail-within-headers-p) | |
524 | (setq activemin (min activemin newnum))))) | |
eec82323 LMI |
525 | (setcar active activemin)))) |
526 | ||
527 | (defun nnfolder-article-string (article) | |
528 | (if (numberp article) | |
529 | (concat "\n" nnfolder-article-marker (int-to-string article) " ") | |
530 | (concat "\nMessage-ID: " article))) | |
531 | ||
6748645f LMI |
532 | (defun nnfolder-goto-article (article) |
533 | "Place point at the start of the headers of ARTICLE. | |
534 | ARTICLE can be an article number or a Message-ID. | |
535 | Returns t if successful, nil otherwise." | |
536 | (let ((art-string (nnfolder-article-string article)) | |
537 | start found) | |
538 | ;; It is likely that we are at or before the delimiter line. | |
539 | ;; We therefore go to the end of the previous line, and start | |
540 | ;; searching from there. | |
541 | (beginning-of-line) | |
542 | (unless (bobp) | |
543 | (forward-char -1)) | |
544 | (setq start (point)) | |
545 | ;; First search forward. | |
546 | (while (and (setq found (search-forward art-string nil t)) | |
547 | (not (nnmail-within-headers-p)))) | |
548 | ;; If unsuccessful, search backward from where we started, | |
549 | (unless found | |
550 | (goto-char start) | |
551 | (while (and (setq found (search-backward art-string nil t)) | |
552 | (not (nnmail-within-headers-p))))) | |
553 | (when found | |
554 | (nnmail-search-unix-mail-delim-backward)))) | |
555 | ||
556 | (defun nnfolder-delete-mail (&optional leave-delim) | |
557 | "Delete the message that point is in. | |
558 | If optional argument LEAVE-DELIM is t, then mailbox delimiter is not | |
559 | deleted. Point is left where the deleted region was." | |
16409b0b GM |
560 | (save-restriction |
561 | (narrow-to-region | |
562 | (save-excursion | |
563 | ;; In case point is at the beginning of the message already. | |
564 | (forward-line 1) | |
565 | (nnmail-search-unix-mail-delim-backward) | |
566 | (if leave-delim (progn (forward-line 1) (point)) | |
567 | (point))) | |
568 | (progn | |
569 | (forward-line 1) | |
570 | (if (nnmail-search-unix-mail-delim) | |
571 | (point) | |
572 | (point-max)))) | |
573 | (run-hooks 'nnfolder-delete-mail-hook) | |
574 | (delete-region (point-min) (point-max)))) | |
eec82323 LMI |
575 | |
576 | (defun nnfolder-possibly-change-group (group &optional server dont-check) | |
577 | ;; Change servers. | |
578 | (when (and server | |
579 | (not (nnfolder-server-opened server))) | |
580 | (nnfolder-open-server server)) | |
581 | (unless (gnus-buffer-live-p nnfolder-current-buffer) | |
582 | (setq nnfolder-current-buffer nil | |
583 | nnfolder-current-group nil)) | |
584 | ;; Change group. | |
585 | (when (and group | |
586 | (not (equal group nnfolder-current-group))) | |
16409b0b | 587 | (let ((file-name-coding-system nnmail-pathname-coding-system)) |
58724016 KH |
588 | (nnmail-activate 'nnfolder) |
589 | (when (and (not (assoc group nnfolder-group-alist)) | |
590 | (not (file-exists-p | |
591 | (nnfolder-group-pathname group)))) | |
592 | ;; The group doesn't exist, so we create a new entry for it. | |
593 | (push (list group (cons 1 0)) nnfolder-group-alist) | |
16409b0b | 594 | (nnfolder-save-active nnfolder-group-alist nnfolder-active-file)) |
a8151ef7 | 595 | |
58724016 | 596 | (if dont-check |
a8151ef7 LMI |
597 | (setq nnfolder-current-group group |
598 | nnfolder-current-buffer nil) | |
58724016 KH |
599 | (let (inf file) |
600 | ;; If we have to change groups, see if we don't already have the | |
601 | ;; folder in memory. If we do, verify the modtime and destroy | |
602 | ;; the folder if needed so we can rescan it. | |
a8151ef7 LMI |
603 | (setq nnfolder-current-buffer |
604 | (nth 1 (assoc group nnfolder-buffer-alist))) | |
605 | ||
58724016 KH |
606 | ;; If the buffer is not live, make sure it isn't in the alist. If it |
607 | ;; is live, verify that nobody else has touched the file since last | |
608 | ;; time. | |
609 | (when (and nnfolder-current-buffer | |
610 | (not (gnus-buffer-live-p nnfolder-current-buffer))) | |
611 | (setq nnfolder-buffer-alist (delq inf nnfolder-buffer-alist) | |
612 | nnfolder-current-buffer nil)) | |
a8151ef7 | 613 | |
58724016 | 614 | (setq nnfolder-current-group group) |
a8151ef7 | 615 | |
58724016 | 616 | (when (or (not nnfolder-current-buffer) |
6748645f LMI |
617 | (not (verify-visited-file-modtime |
618 | nnfolder-current-buffer))) | |
58724016 KH |
619 | (save-excursion |
620 | (setq file (nnfolder-group-pathname group)) | |
621 | ;; See whether we need to create the new file. | |
622 | (unless (file-exists-p file) | |
623 | (gnus-make-directory (file-name-directory file)) | |
16409b0b GM |
624 | (let ((nnmail-file-coding-system |
625 | (or nnfolder-file-coding-system-for-write | |
626 | nnfolder-file-coding-system-for-write))) | |
627 | (nnmail-write-region 1 1 file t 'nomesg))) | |
58724016 KH |
628 | (when (setq nnfolder-current-buffer (nnfolder-read-folder group)) |
629 | (set-buffer nnfolder-current-buffer) | |
630 | (push (list group nnfolder-current-buffer) | |
631 | nnfolder-buffer-alist))))))))) | |
eec82323 LMI |
632 | |
633 | (defun nnfolder-save-mail (group-art-list) | |
634 | "Called narrowed to an article." | |
635 | (let* (save-list group-art) | |
636 | (goto-char (point-min)) | |
637 | ;; The From line may have been quoted by movemail. | |
16409b0b | 638 | (when (looking-at ">From") |
eec82323 LMI |
639 | (delete-char 1)) |
640 | ;; This might come from somewhere else. | |
16409b0b | 641 | (unless (looking-at "From ") |
eec82323 LMI |
642 | (insert "From nobody " (current-time-string) "\n") |
643 | (goto-char (point-min))) | |
6748645f | 644 | ;; Quote all "From " lines in the article. |
16409b0b | 645 | (forward-line 1) |
eec82323 LMI |
646 | (let (case-fold-search) |
647 | (while (re-search-forward "^From " nil t) | |
648 | (beginning-of-line) | |
649 | (insert "> "))) | |
650 | (setq save-list group-art-list) | |
651 | (nnmail-insert-lines) | |
652 | (nnmail-insert-xref group-art-list) | |
653 | (run-hooks 'nnmail-prepare-save-mail-hook) | |
654 | (run-hooks 'nnfolder-prepare-save-mail-hook) | |
655 | ||
656 | ;; Insert the mail into each of the destination groups. | |
657 | (while (setq group-art (pop group-art-list)) | |
658 | ;; Kill any previous newsgroup markers. | |
659 | (goto-char (point-min)) | |
16409b0b GM |
660 | (if (search-forward "\n\n" nil t) |
661 | (forward-line -1) | |
662 | (goto-char (point-max))) | |
eec82323 LMI |
663 | (while (search-backward (concat "\n" nnfolder-article-marker) nil t) |
664 | (delete-region (1+ (point)) (progn (forward-line 2) (point)))) | |
665 | ||
666 | ;; Insert the new newsgroup marker. | |
667 | (nnfolder-insert-newsgroup-line group-art) | |
668 | ||
669 | (save-excursion | |
670 | (let ((beg (point-min)) | |
671 | (end (point-max)) | |
672 | (obuf (current-buffer))) | |
673 | (nnfolder-possibly-change-folder (car group-art)) | |
674 | (let ((buffer-read-only nil)) | |
6748645f | 675 | (nnfolder-normalize-buffer) |
eec82323 LMI |
676 | (insert-buffer-substring obuf beg end))))) |
677 | ||
678 | ;; Did we save it anywhere? | |
679 | save-list)) | |
680 | ||
6748645f LMI |
681 | (defun nnfolder-normalize-buffer () |
682 | "Make sure there are two newlines at the end of the buffer." | |
683 | (goto-char (point-max)) | |
684 | (skip-chars-backward "\n") | |
685 | (delete-region (point) (point-max)) | |
686 | (insert "\n\n")) | |
687 | ||
eec82323 LMI |
688 | (defun nnfolder-insert-newsgroup-line (group-art) |
689 | (save-excursion | |
690 | (goto-char (point-min)) | |
16409b0b GM |
691 | (unless (search-forward "\n\n" nil t) |
692 | (goto-char (point-max)) | |
693 | (insert "\n")) | |
694 | (forward-char -1) | |
695 | (insert (format (concat nnfolder-article-marker "%d %s\n") | |
696 | (cdr group-art) (current-time-string))))) | |
eec82323 LMI |
697 | |
698 | (defun nnfolder-active-number (group) | |
699 | ;; Find the next article number in GROUP. | |
700 | (let ((active (cadr (assoc group nnfolder-group-alist)))) | |
701 | (if active | |
702 | (setcdr active (1+ (cdr active))) | |
703 | ;; This group is new, so we create a new entry for it. | |
704 | ;; This might be a bit naughty... creating groups on the drop of | |
705 | ;; a hat, but I don't know... | |
706 | (push (list group (setq active (cons 1 1))) | |
707 | nnfolder-group-alist)) | |
708 | (cdr active))) | |
709 | ||
710 | (defun nnfolder-possibly-change-folder (group) | |
711 | (let ((inf (assoc group nnfolder-buffer-alist))) | |
712 | (if (and inf | |
713 | (gnus-buffer-live-p (cadr inf))) | |
714 | (set-buffer (cadr inf)) | |
715 | (when inf | |
716 | (setq nnfolder-buffer-alist (delq inf nnfolder-buffer-alist))) | |
717 | (when nnfolder-group-alist | |
16409b0b | 718 | (nnfolder-save-active nnfolder-group-alist nnfolder-active-file)) |
eec82323 LMI |
719 | (push (list group (nnfolder-read-folder group)) |
720 | nnfolder-buffer-alist)))) | |
721 | ||
722 | ;; This method has a problem if you've accidentally let the active list get | |
723 | ;; out of sync with the files. This could happen, say, if you've | |
724 | ;; accidentally gotten new mail with something other than Gnus (but why | |
725 | ;; would _that_ ever happen? :-). In that case, we will be in the middle of | |
726 | ;; processing the file, ready to add new X-Gnus article number markers, and | |
727 | ;; we'll run across a message with no ID yet - the active list _may_not_ be | |
728 | ;; ready for us yet. | |
729 | ||
730 | ;; To handle this, I'm modifying this routine to maintain the maximum ID seen | |
731 | ;; so far, and when we hit a message with no ID, we will _manually_ scan the | |
732 | ;; rest of the message looking for any more, possibly higher IDs. We'll | |
733 | ;; assume the maximum that we find is the highest active. Note that this | |
734 | ;; shouldn't cost us much extra time at all, but will be a lot less | |
735 | ;; vulnerable to glitches between the mbox and the active file. | |
736 | ||
737 | (defun nnfolder-read-folder (group) | |
738 | (let* ((file (nnfolder-group-pathname group)) | |
16409b0b GM |
739 | (buffer (set-buffer |
740 | (let ((nnheader-file-coding-system | |
741 | nnfolder-file-coding-system)) | |
742 | (nnheader-find-file-noselect file))))) | |
eec82323 LMI |
743 | (if (equal (cadr (assoc group nnfolder-scantime-alist)) |
744 | (nth 5 (file-attributes file))) | |
745 | ;; This looks up-to-date, so we don't do any scanning. | |
6748645f LMI |
746 | (if (file-exists-p file) |
747 | buffer | |
748 | (push (list group buffer) nnfolder-buffer-alist) | |
749 | (set-buffer-modified-p t) | |
16409b0b | 750 | (nnfolder-save-buffer)) |
eec82323 LMI |
751 | ;; Parse the damn thing. |
752 | (save-excursion | |
16409b0b GM |
753 | (goto-char (point-min)) |
754 | ;; Remove any blank lines at the start. | |
755 | (while (eq (following-char) ?\n) | |
756 | (delete-char 1)) | |
eec82323 LMI |
757 | (nnmail-activate 'nnfolder) |
758 | ;; Read in the file. | |
16409b0b | 759 | (let ((delim "^From ") |
eec82323 LMI |
760 | (marker (concat "\n" nnfolder-article-marker)) |
761 | (number "[0-9]+") | |
762 | (active (or (cadr (assoc group nnfolder-group-alist)) | |
763 | (cons 1 0))) | |
764 | (scantime (assoc group nnfolder-scantime-alist)) | |
765 | (minid (lsh -1 -1)) | |
766 | maxid start end newscantime | |
767 | buffer-read-only) | |
16409b0b | 768 | (buffer-disable-undo) |
eec82323 LMI |
769 | (setq maxid (cdr active)) |
770 | (goto-char (point-min)) | |
771 | ||
772 | ;; Anytime the active number is 1 or 0, it is suspect. In that | |
773 | ;; case, search the file manually to find the active number. Or, | |
774 | ;; of course, if we're being paranoid. (This would also be the | |
775 | ;; place to build other lists from the header markers, such as | |
776 | ;; expunge lists, etc., if we ever desired to abandon the active | |
777 | ;; file entirely for mboxes.) | |
778 | (when (or nnfolder-ignore-active-file | |
779 | (< maxid 2)) | |
780 | (while (and (search-forward marker nil t) | |
781 | (re-search-forward number nil t)) | |
782 | (let ((newnum (string-to-number (match-string 0)))) | |
6748645f LMI |
783 | (if (nnmail-within-headers-p) |
784 | (setq maxid (max maxid newnum) | |
785 | minid (min minid newnum))))) | |
eec82323 LMI |
786 | (setcar active (max 1 (min minid maxid))) |
787 | (setcdr active (max maxid (cdr active))) | |
788 | (goto-char (point-min))) | |
789 | ||
790 | ;; As long as we trust that the user will only insert unmarked mail | |
791 | ;; at the end, go to the end and search backwards for the last | |
792 | ;; marker. Find the start of that message, and begin to search for | |
793 | ;; unmarked messages from there. | |
794 | (when (not (or nnfolder-distrust-mbox | |
795 | (< maxid 2))) | |
796 | (goto-char (point-max)) | |
797 | (unless (re-search-backward marker nil t) | |
798 | (goto-char (point-min))) | |
799 | (when (nnmail-search-unix-mail-delim) | |
800 | (goto-char (point-min)))) | |
801 | ||
802 | ;; Keep track of the active number on our own, and insert it back | |
803 | ;; into the active list when we're done. Also, prime the pump to | |
804 | ;; cut down on the number of searches we do. | |
805 | (unless (nnmail-search-unix-mail-delim) | |
806 | (goto-char (point-max))) | |
807 | (setq end (point-marker)) | |
808 | (while (not (= end (point-max))) | |
809 | (setq start (marker-position end)) | |
810 | (goto-char end) | |
811 | ;; There may be more than one "From " line, so we skip past | |
812 | ;; them. | |
813 | (while (looking-at delim) | |
814 | (forward-line 1)) | |
815 | (set-marker end (if (nnmail-search-unix-mail-delim) | |
816 | (point) | |
817 | (point-max))) | |
818 | (goto-char start) | |
819 | (when (not (search-forward marker end t)) | |
820 | (narrow-to-region start end) | |
821 | (nnmail-insert-lines) | |
822 | (nnfolder-insert-newsgroup-line | |
823 | (cons nil (nnfolder-active-number nnfolder-current-group))) | |
824 | (widen))) | |
825 | ||
826 | (set-marker end nil) | |
827 | ;; Make absolutely sure that the active list reflects reality! | |
16409b0b | 828 | (nnfolder-save-active nnfolder-group-alist nnfolder-active-file) |
eec82323 LMI |
829 | ;; Set the scantime for this group. |
830 | (setq newscantime (visited-file-modtime)) | |
831 | (if scantime | |
832 | (setcdr scantime (list newscantime)) | |
833 | (push (list nnfolder-current-group newscantime) | |
834 | nnfolder-scantime-alist)) | |
835 | (current-buffer)))))) | |
836 | ||
837 | ;;;###autoload | |
838 | (defun nnfolder-generate-active-file () | |
16409b0b GM |
839 | "Look for mbox folders in the nnfolder directory and make them into groups. |
840 | This command does not work if you use short group names." | |
eec82323 LMI |
841 | (interactive) |
842 | (nnmail-activate 'nnfolder) | |
843 | (let ((files (directory-files nnfolder-directory)) | |
844 | file) | |
845 | (while (setq file (pop files)) | |
846 | (when (and (not (backup-file-name-p file)) | |
847 | (message-mail-file-mbox-p | |
848 | (nnheader-concat nnfolder-directory file))) | |
849 | (let ((oldgroup (assoc file nnfolder-group-alist))) | |
850 | (if oldgroup | |
851 | (nnheader-message 5 "Refreshing group %s..." file) | |
852 | (nnheader-message 5 "Adding group %s..." file)) | |
03378294 RS |
853 | (if oldgroup |
854 | (setq nnfolder-group-alist | |
855 | (delq oldgroup (copy-sequence nnfolder-group-alist)))) | |
eec82323 LMI |
856 | (push (list file (cons 1 0)) nnfolder-group-alist) |
857 | (nnfolder-possibly-change-folder file) | |
858 | (nnfolder-possibly-change-group file) | |
859 | (nnfolder-close-group file)))) | |
6748645f | 860 | (nnheader-message 5 ""))) |
eec82323 LMI |
861 | |
862 | (defun nnfolder-group-pathname (group) | |
863 | "Make pathname for GROUP." | |
16409b0b GM |
864 | (setq group |
865 | (mm-encode-coding-string group nnmail-pathname-coding-system)) | |
eec82323 LMI |
866 | (let ((dir (file-name-as-directory (expand-file-name nnfolder-directory)))) |
867 | ;; If this file exists, we use it directly. | |
868 | (if (or nnmail-use-long-file-names | |
869 | (file-exists-p (concat dir group))) | |
870 | (concat dir group) | |
871 | ;; If not, we translate dots into slashes. | |
872 | (concat dir (nnheader-replace-chars-in-string group ?. ?/))))) | |
873 | ||
874 | (defun nnfolder-save-buffer () | |
875 | "Save the buffer." | |
876 | (when (buffer-modified-p) | |
877 | (run-hooks 'nnfolder-save-buffer-hook) | |
a8151ef7 | 878 | (gnus-make-directory (file-name-directory (buffer-file-name))) |
16409b0b GM |
879 | (let ((coding-system-for-write |
880 | (or nnfolder-file-coding-system-for-write | |
881 | nnfolder-file-coding-system))) | |
882 | (save-buffer)))) | |
883 | ||
884 | (defun nnfolder-save-active (group-alist active-file) | |
885 | (let ((nnmail-active-file-coding-system | |
886 | (or nnfolder-active-file-coding-system-for-write | |
887 | nnfolder-active-file-coding-system))) | |
888 | (nnmail-save-active group-alist active-file))) | |
eec82323 LMI |
889 | |
890 | (provide 'nnfolder) | |
891 | ||
892 | ;;; nnfolder.el ends here |