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[bpt/emacs.git] / lisp / gnus / nnfolder.el
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eec82323 1;;; nnfolder.el --- mail folder access for Gnus
e84b4b86
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2
3;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
5df4f04c 4;; 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
eec82323 5
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6;; Author: Simon Josefsson <simon@josefsson.org> (adding MARKS)
7;; ShengHuo Zhu <zsh@cs.rochester.edu> (adding NOV)
8;; Scott Byer <byer@mv.us.adobe.com>
6748645f 9;; Lars Magne Ingebrigtsen <larsi@gnus.org>
23f87bed 10;; Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
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11;; Keywords: mail
12
13;; This file is part of GNU Emacs.
14
5e809f55 15;; GNU Emacs is free software: you can redistribute it and/or modify
eec82323 16;; it under the terms of the GNU General Public License as published by
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17;; the Free Software Foundation, either version 3 of the License, or
18;; (at your option) any later version.
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19
20;; GNU Emacs is distributed in the hope that it will be useful,
21;; but WITHOUT ANY WARRANTY; without even the implied warranty of
22;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23;; GNU General Public License for more details.
24
25;; You should have received a copy of the GNU General Public License
5e809f55 26;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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27
28;;; Commentary:
29
30;;; Code:
31
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32;; For Emacs < 22.2.
33(eval-and-compile
34 (unless (fboundp 'declare-function) (defmacro declare-function (&rest r))))
35
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36(require 'nnheader)
37(require 'message)
38(require 'nnmail)
39(require 'nnoo)
6748645f 40(eval-when-compile (require 'cl))
23f87bed 41(require 'gnus)
eec82323 42(require 'gnus-util)
0d972486 43(require 'gnus-range)
eec82323 44
547e921e 45;; FIXME not explicitly used in this file.
c5ce620e 46(autoload 'gnus-article-unpropagatable-p "gnus-sum")
23f87bed 47
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48(nnoo-declare nnfolder)
49
50(defvoo nnfolder-directory (expand-file-name message-directory)
51 "The name of the nnfolder directory.")
52
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53(defvoo nnfolder-nov-directory nil
54 "The name of the nnfolder NOV directory.
55If nil, `nnfolder-directory' is used.")
56
57(defvoo nnfolder-marks-directory nil
58 "The name of the nnfolder MARKS directory.
59If nil, `nnfolder-directory' is used.")
60
eec82323 61(defvoo nnfolder-active-file
16409b0b 62 (nnheader-concat nnfolder-directory "active")
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63 "The name of the active file.")
64
65;; I renamed this variable to something more in keeping with the general GNU
66;; style. -SLB
67
68(defvoo nnfolder-ignore-active-file nil
dcf4ae73 69 "If non-nil, the active file is ignored.
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70This causes nnfolder to do some extra work in order to determine the
71true active ranges of an mbox file. Note that the active file is
dcf4ae73 72still saved, but its values are not used. This costs some extra time
16409b0b 73when scanning an mbox when opening it.")
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74
75(defvoo nnfolder-distrust-mbox nil
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76 "If non-nil, the folder will be distrusted.
77This means that nnfolder will not trust the user with respect to
78inserting unaccounted for mail in the middle of an mbox file. This
79can greatly slow down scans, which now must scan the entire file for
80unmarked messages. When nil, scans occur forward from the last marked
81message, a huge time saver for large mailboxes.")
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82
83(defvoo nnfolder-newsgroups-file
16409b0b 84 (concat (file-name-as-directory nnfolder-directory) "newsgroups")
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85 "Mail newsgroups description file.")
86
87(defvoo nnfolder-get-new-mail t
88 "If non-nil, nnfolder will check the incoming mail file and split the mail.")
89
90(defvoo nnfolder-prepare-save-mail-hook nil
91 "Hook run narrowed to an article before saving.")
92
93(defvoo nnfolder-save-buffer-hook nil
94 "Hook run before saving the nnfolder mbox buffer.")
95
23f87bed 96
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97(defvoo nnfolder-inhibit-expiry nil
98 "If non-nil, inhibit expiry.")
99
100\f
101
23f87bed 102(defconst nnfolder-version "nnfolder 2.0"
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103 "nnfolder version.")
104
105(defconst nnfolder-article-marker "X-Gnus-Article-Number: "
106 "String used to demarcate what the article number for a message is.")
107
108(defvoo nnfolder-current-group nil)
109(defvoo nnfolder-current-buffer nil)
110(defvoo nnfolder-status-string "")
111(defvoo nnfolder-group-alist nil)
112(defvoo nnfolder-buffer-alist nil)
113(defvoo nnfolder-scantime-alist nil)
114(defvoo nnfolder-active-timestamp nil)
16409b0b 115(defvoo nnfolder-active-file-coding-system mm-text-coding-system)
a1506d29 116(defvoo nnfolder-active-file-coding-system-for-write
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117 nnmail-active-file-coding-system)
118(defvoo nnfolder-file-coding-system mm-text-coding-system)
119(defvoo nnfolder-file-coding-system-for-write nnheader-file-coding-system
120 "Coding system for save nnfolder file.
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121if nil, `nnfolder-file-coding-system' is used.") ; FIXME: fill-in the doc-string of this variable
122
123(defvoo nnfolder-nov-is-evil nil
124 "If non-nil, Gnus will never generate and use nov databases for mail groups.
125Using nov databases will speed up header fetching considerably.
126This variable shouldn't be flipped much. If you have, for some reason,
127set this to t, and want to set it to nil again, you should always run
128the `nnfolder-generate-active-file' command. The function will go
129through all nnfolder directories and generate nov databases for them
130all. This may very well take some time.")
131
132(defvoo nnfolder-nov-file-suffix ".nov")
133
134(defvoo nnfolder-nov-buffer-alist nil)
135
136(defvar nnfolder-nov-buffer-file-name nil)
137
138(defvoo nnfolder-marks-is-evil nil
139 "If non-nil, Gnus will never generate and use marks file for mail groups.
140Using marks files makes it possible to backup and restore mail groups
141separately from `.newsrc.eld'. If you have, for some reason, set
142this to t, and want to set it to nil again, you should always remove
143the corresponding marks file (usually base nnfolder file name
144concatenated with `.mrk', but see `nnfolder-marks-file-suffix') for
145the group. Then the marks file will be regenerated properly by Gnus.")
146
147(defvoo nnfolder-marks nil)
148
149(defvoo nnfolder-marks-file-suffix ".mrk")
150
151(defvar nnfolder-marks-modtime (gnus-make-hashtable))
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152
153\f
154
155;;; Interface functions
156
157(nnoo-define-basics nnfolder)
158
159(deffoo nnfolder-retrieve-headers (articles &optional group server fetch-old)
160 (save-excursion
161 (set-buffer nntp-server-buffer)
162 (erase-buffer)
23f87bed 163 (let (article start stop num)
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164 (nnfolder-possibly-change-group group server)
165 (when nnfolder-current-buffer
166 (set-buffer nnfolder-current-buffer)
167 (goto-char (point-min))
168 (if (stringp (car articles))
169 'headers
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170 (if (nnfolder-retrieve-headers-with-nov articles fetch-old)
171 'nov
172 (setq articles (gnus-sorted-intersection
173 ;; Is ARTICLES sorted?
174 (sort articles '<)
175 (nnfolder-existing-articles)))
176 (while (setq article (pop articles))
177 (set-buffer nnfolder-current-buffer)
178 (cond ((nnfolder-goto-article article)
179 (setq start (point))
180 (setq stop (if (search-forward "\n\n" nil t)
181 (1- (point))
182 (point-max)))
183 (set-buffer nntp-server-buffer)
184 (insert (format "221 %d Article retrieved.\n" article))
185 (insert-buffer-substring nnfolder-current-buffer
186 start stop)
187 (goto-char (point-max))
188 (insert ".\n"))
189
190 ;; If we couldn't find this article, skip over ranges
191 ;; of missing articles so we don't search the whole file
192 ;; for each of them.
193 ((numberp article)
194 (setq start (point))
195 (and
196 ;; Check that we are either at BOF or after an
197 ;; article with a lower number. We do this so we
198 ;; won't be confused by out-of-order article numbers,
199 ;; as caused by active file bogosity.
200 (cond
201 ((bobp))
202 ((search-backward (concat "\n" nnfolder-article-marker)
203 nil t)
204 (goto-char (match-end 0))
e9bd5782 205 (setq num (string-to-number
23f87bed 206 (buffer-substring
01c52d31 207 (point) (point-at-eol))))
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208 (goto-char start)
209 (< num article)))
210 ;; Check that we are before an article with a
211 ;; higher number.
212 (search-forward (concat "\n" nnfolder-article-marker)
213 nil t)
214 (progn
e9bd5782 215 (setq num (string-to-number
23f87bed 216 (buffer-substring
01c52d31 217 (point) (point-at-eol))))
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218 (> num article))
219 ;; Discard any article numbers before the one we're
220 ;; now looking at.
221 (while (and articles
222 (< (car articles) num))
223 (setq articles (cdr articles))))
224 (goto-char start))))
225 (set-buffer nntp-server-buffer)
226 (nnheader-fold-continuation-lines)
227 'headers))))))
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228
229(deffoo nnfolder-open-server (server &optional defs)
230 (nnoo-change-server 'nnfolder server defs)
231 (nnmail-activate 'nnfolder t)
232 (gnus-make-directory nnfolder-directory)
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233 (unless (or gnus-nov-is-evil nnfolder-nov-is-evil)
234 (and nnfolder-nov-directory
235 (gnus-make-directory nnfolder-nov-directory)))
236 (unless nnfolder-marks-is-evil
237 (and nnfolder-marks-directory
238 (gnus-make-directory nnfolder-marks-directory)))
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239 (cond
240 ((not (file-exists-p nnfolder-directory))
241 (nnfolder-close-server)
242 (nnheader-report 'nnfolder "Couldn't create directory: %s"
243 nnfolder-directory))
244 ((not (file-directory-p (file-truename nnfolder-directory)))
245 (nnfolder-close-server)
246 (nnheader-report 'nnfolder "Not a directory: %s" nnfolder-directory))
247 (t
248 (nnmail-activate 'nnfolder)
249 (nnheader-report 'nnfolder "Opened server %s using directory %s"
250 server nnfolder-directory)
251 t)))
252
253(deffoo nnfolder-request-close ()
254 (let ((alist nnfolder-buffer-alist))
255 (while alist
256 (nnfolder-close-group (caar alist) nil t)
257 (setq alist (cdr alist))))
258 (nnoo-close-server 'nnfolder)
259 (setq nnfolder-buffer-alist nil
260 nnfolder-group-alist nil))
261
262(deffoo nnfolder-request-article (article &optional group server buffer)
263 (nnfolder-possibly-change-group group server)
264 (save-excursion
265 (set-buffer nnfolder-current-buffer)
266 (goto-char (point-min))
6748645f 267 (when (nnfolder-goto-article article)
eec82323 268 (let (start stop)
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269 (setq start (point))
270 (forward-line 1)
271 (unless (and (nnmail-search-unix-mail-delim)
272 (forward-line -1))
273 (goto-char (point-max)))
274 (setq stop (point))
275 (let ((nntp-server-buffer (or buffer nntp-server-buffer)))
276 (set-buffer nntp-server-buffer)
277 (erase-buffer)
278 (insert-buffer-substring nnfolder-current-buffer start stop)
279 (goto-char (point-min))
280 (while (looking-at "From ")
281 (delete-char 5)
282 (insert "X-From-Line: ")
283 (forward-line 1))
284 (if (numberp article)
285 (cons nnfolder-current-group article)
286 (goto-char (point-min))
eec82323 287 (cons nnfolder-current-group
a1506d29 288 (if (search-forward (concat "\n" nnfolder-article-marker)
16409b0b 289 nil t)
e9bd5782 290 (string-to-number (buffer-substring
01c52d31 291 (point) (point-at-eol)))
16409b0b 292 -1))))))))
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293
294(deffoo nnfolder-request-group (group &optional server dont-check)
295 (nnfolder-possibly-change-group group server t)
296 (save-excursion
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297 (cond ((not (assoc group nnfolder-group-alist))
298 (nnheader-report 'nnfolder "No such group: %s" group))
299 ((file-directory-p (nnfolder-group-pathname group))
300 (nnheader-report 'nnfolder "%s is a directory"
301 (file-name-as-directory
302 (let ((nnmail-pathname-coding-system nil))
303 (nnfolder-group-pathname group)))))
304 (dont-check
305 (nnheader-report 'nnfolder "Selected group %s" group)
306 t)
307 (t
308 (let* ((active (assoc group nnfolder-group-alist))
309 (group (car active))
310 (range (cadr active)))
311 (cond
312 ((null active)
313 (nnheader-report 'nnfolder "No such group: %s" group))
314 ((null nnfolder-current-group)
315 (nnheader-report 'nnfolder "Empty group: %s" group))
316 (t
317 (nnheader-report 'nnfolder "Selected group %s" group)
318 (nnheader-insert "211 %d %d %d %s\n"
319 (1+ (- (cdr range) (car range)))
320 (car range) (cdr range) group))))))))
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321
322(deffoo nnfolder-request-scan (&optional group server)
323 (nnfolder-possibly-change-group nil server)
324 (when nnfolder-get-new-mail
325 (nnfolder-possibly-change-group group server)
326 (nnmail-get-new-mail
327 'nnfolder
328 (lambda ()
329 (let ((bufs nnfolder-buffer-alist))
330 (save-excursion
331 (while bufs
332 (if (not (gnus-buffer-live-p (nth 1 (car bufs))))
333 (setq nnfolder-buffer-alist
334 (delq (car bufs) nnfolder-buffer-alist))
335 (set-buffer (nth 1 (car bufs)))
336 (nnfolder-save-buffer)
337 (kill-buffer (current-buffer)))
338 (setq bufs (cdr bufs))))))
339 nnfolder-directory
340 group)))
341
342;; Don't close the buffer if we're not shutting down the server. This way,
343;; we can keep the buffer in the group buffer cache, and not have to grovel
344;; over the buffer again unless we add new mail to it or modify it in some
345;; way.
346
347(deffoo nnfolder-close-group (group &optional server force)
348 ;; Make sure we _had_ the group open.
349 (when (or (assoc group nnfolder-buffer-alist)
350 (equal group nnfolder-current-group))
351 (let ((inf (assoc group nnfolder-buffer-alist)))
352 (when inf
353 (when (and nnfolder-current-group
354 nnfolder-current-buffer)
355 (push (list nnfolder-current-group nnfolder-current-buffer)
356 nnfolder-buffer-alist))
357 (setq nnfolder-buffer-alist
358 (delq inf nnfolder-buffer-alist))
359 (setq nnfolder-current-buffer (cadr inf)
360 nnfolder-current-group (car inf))))
361 (when (and nnfolder-current-buffer
362 (buffer-name nnfolder-current-buffer))
363 (save-excursion
364 (set-buffer nnfolder-current-buffer)
365 ;; If the buffer was modified, write the file out now.
366 (nnfolder-save-buffer)
367 ;; If we're shutting the server down, we need to kill the
368 ;; buffer and remove it from the open buffer list. Or, of
369 ;; course, if we're trying to minimize our space impact.
370 (kill-buffer (current-buffer))
371 (setq nnfolder-buffer-alist (delq (assoc group nnfolder-buffer-alist)
372 nnfolder-buffer-alist)))))
373 (setq nnfolder-current-group nil
374 nnfolder-current-buffer nil)
375 t)
376
377(deffoo nnfolder-request-create-group (group &optional server args)
378 (nnfolder-possibly-change-group nil server)
379 (nnmail-activate 'nnfolder)
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380 (cond ((zerop (length group))
381 (nnheader-report 'nnfolder "Invalid (empty) group name"))
382 ((file-directory-p (nnfolder-group-pathname group))
383 (nnheader-report 'nnfolder "%s is a directory"
384 (file-name-as-directory
385 (let ((nnmail-pathname-coding-system nil))
386 (nnfolder-group-pathname group)))))
387 ((assoc group nnfolder-group-alist)
388 t)
389 (t
390 (push (list group (cons 1 0)) nnfolder-group-alist)
391 (nnfolder-save-active nnfolder-group-alist nnfolder-active-file)
392 (save-current-buffer
393 (nnfolder-read-folder group))
394 t)))
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395
396(deffoo nnfolder-request-list (&optional server)
397 (nnfolder-possibly-change-group nil server)
398 (save-excursion
16409b0b 399 (let ((nnmail-file-coding-system nnfolder-active-file-coding-system))
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400 (nnmail-find-file nnfolder-active-file)
401 (setq nnfolder-group-alist (nnmail-get-active)))
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402 t))
403
404(deffoo nnfolder-request-newgroups (date &optional server)
405 (nnfolder-possibly-change-group nil server)
406 (nnfolder-request-list server))
407
408(deffoo nnfolder-request-list-newsgroups (&optional server)
409 (nnfolder-possibly-change-group nil server)
410 (save-excursion
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411 (let ((nnmail-file-coding-system nnfolder-file-coding-system))
412 (nnmail-find-file nnfolder-newsgroups-file))))
413
414;; Return a list consisting of all article numbers existing in the
415;; current folder.
416
417(defun nnfolder-existing-articles ()
418 (save-excursion
419 (when nnfolder-current-buffer
420 (set-buffer nnfolder-current-buffer)
421 (goto-char (point-min))
422 (let ((marker (concat "\n" nnfolder-article-marker))
423 (number "[0-9]+")
424 numbers)
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425 (while (and (search-forward marker nil t)
426 (re-search-forward number nil t))
427 (let ((newnum (string-to-number (match-string 0))))
428 (if (nnmail-within-headers-p)
429 (push newnum numbers))))
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430 ;; The article numbers are increasing, so this result is sorted.
431 (nreverse numbers)))))
eec82323 432
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433(autoload 'gnus-request-group "gnus-int")
434(declare-function gnus-request-create-group "gnus-int"
435 (group &optional gnus-command-method args))
436
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437(deffoo nnfolder-request-expire-articles (articles newsgroup
438 &optional server force)
eec82323 439 (nnfolder-possibly-change-group newsgroup server)
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440 (let ((is-old t)
441 ;; The articles we have deleted so far.
442 (deleted-articles nil)
443 ;; The articles that really exist and will
444 ;; be expired if they are old enough.
445 (maybe-expirable
446 (gnus-sorted-intersection articles (nnfolder-existing-articles)))
447 target)
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448 (nnmail-activate 'nnfolder)
449
450 (save-excursion
451 (set-buffer nnfolder-current-buffer)
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452 ;; Since messages are sorted in arrival order and expired in the
453 ;; same order, we can stop as soon as we find a message that is
454 ;; too old.
455 (while (and maybe-expirable is-old)
eec82323 456 (goto-char (point-min))
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457 (when (and (nnfolder-goto-article (car maybe-expirable))
458 (search-forward (concat "\n" nnfolder-article-marker)
459 nil t))
460 (forward-sexp)
461 (when (setq is-old
462 (nnmail-expired-article-p
463 newsgroup
464 (buffer-substring
465 (point) (progn (end-of-line) (point)))
466 force nnfolder-inhibit-expiry))
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467 (setq target nnmail-expiry-target)
468 (unless (eq target 'delete)
0d972486 469 (with-temp-buffer
a1506d29 470 (nnfolder-request-article (car maybe-expirable)
0d972486 471 newsgroup server (current-buffer))
23f87bed 472 (let ((nnfolder-current-directory nil))
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473 (when (functionp target)
474 (setq target (funcall target newsgroup)))
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475 (when (and target (not (eq target 'delete)))
476 (if (or (gnus-request-group target)
477 (gnus-request-create-group target))
478 (nnmail-expiry-target-group target newsgroup)
479 (setq target nil)))))
23f87bed 480 (nnfolder-possibly-change-group newsgroup server))
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481 (when target
482 (nnheader-message 5 "Deleting article %d in %s..."
483 (car maybe-expirable) newsgroup)
484 (nnfolder-delete-mail)
485 (unless (or gnus-nov-is-evil nnfolder-nov-is-evil)
486 (nnfolder-nov-delete-article newsgroup (car maybe-expirable)))
487 ;; Must remember which articles were actually deleted
488 (push (car maybe-expirable) deleted-articles))))
16409b0b 489 (setq maybe-expirable (cdr maybe-expirable)))
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490 (unless nnfolder-inhibit-expiry
491 (nnheader-message 5 "Deleting articles...done"))
492 (nnfolder-save-buffer)
493 (nnfolder-adjust-min-active newsgroup)
16409b0b 494 (nnfolder-save-active nnfolder-group-alist nnfolder-active-file)
23f87bed 495 (gnus-sorted-difference articles (nreverse deleted-articles)))))
eec82323 496
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497(deffoo nnfolder-request-move-article (article group server accept-form
498 &optional last move-is-internal)
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499 (save-excursion
500 (let ((buf (get-buffer-create " *nnfolder move*"))
501 result)
502 (and
503 (nnfolder-request-article article group server)
504 (save-excursion
505 (set-buffer buf)
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506 (erase-buffer)
507 (insert-buffer-substring nntp-server-buffer)
508 (goto-char (point-min))
509 (while (re-search-forward
510 (concat "^" nnfolder-article-marker)
a1506d29 511 (save-excursion (and (search-forward "\n\n" nil t) (point)))
16409b0b 512 t)
23f87bed 513 (gnus-delete-line))
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514 (setq result (eval accept-form))
515 (kill-buffer buf)
516 result)
517 (save-excursion
518 (nnfolder-possibly-change-group group server)
519 (set-buffer nnfolder-current-buffer)
520 (goto-char (point-min))
521 (when (nnfolder-goto-article article)
522 (nnfolder-delete-mail))
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523 (unless (or gnus-nov-is-evil nnfolder-nov-is-evil)
524 (nnfolder-nov-delete-article group article))
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525 (when last
526 (nnfolder-save-buffer)
527 (nnfolder-adjust-min-active group)
16409b0b 528 (nnfolder-save-active nnfolder-group-alist nnfolder-active-file))))
6748645f 529 result)))
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530
531(deffoo nnfolder-request-accept-article (group &optional server last)
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532 (save-excursion
533 (nnfolder-possibly-change-group group server)
534 (nnmail-check-syntax)
535 (let ((buf (current-buffer))
536 result art-group)
537 (goto-char (point-min))
538 (when (looking-at "X-From-Line: ")
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539 (replace-match "From ")
540 (while (progn (forward-line) (looking-at "[ \t]"))
541 (delete-char -1)))
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542 (with-temp-buffer
543 (let ((nnmail-file-coding-system nnfolder-active-file-coding-system)
544 (nntp-server-buffer (current-buffer)))
545 (nnmail-find-file nnfolder-active-file)
546 (setq nnfolder-group-alist (nnmail-parse-active))))
547 (save-excursion
548 (goto-char (point-min))
549 (if (search-forward "\n\n" nil t)
550 (forward-line -1)
551 (goto-char (point-max)))
552 (while (re-search-backward (concat "^" nnfolder-article-marker) nil t)
553 (delete-region (point) (progn (forward-line 1) (point))))
554 (when nnmail-cache-accepted-message-ids
555 (nnmail-cache-insert (nnmail-fetch-field "message-id")
556 group
557 (nnmail-fetch-field "subject")
558 (nnmail-fetch-field "from")))
559 (setq result (if (stringp group)
560 (list (cons group (nnfolder-active-number group)))
561 (setq art-group
562 (nnmail-article-group 'nnfolder-active-number))))
563 (if (and (null result)
564 (yes-or-no-p "Moved to `junk' group; delete article? "))
565 (setq result 'junk)
566 (setq result
567 (car (nnfolder-save-mail result)))))
568 (when last
569 (save-excursion
570 (nnfolder-possibly-change-folder (or (caar art-group) group))
571 (nnfolder-save-buffer)
572 (when nnmail-cache-accepted-message-ids
573 (nnmail-cache-close))))
16409b0b 574 (nnfolder-save-active nnfolder-group-alist nnfolder-active-file)
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575 (unless result
576 (nnheader-report 'nnfolder "Couldn't store article"))
577 result)))
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578
579(deffoo nnfolder-request-replace-article (article group buffer)
580 (nnfolder-possibly-change-group group)
581 (save-excursion
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582 (set-buffer buffer)
583 (goto-char (point-min))
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584 (if (not (looking-at "X-From-Line: "))
585 (insert "From nobody " (current-time-string) "\n")
586 (replace-match "From ")
587 (forward-line 1)
588 (while (looking-at "[ \t]")
589 (delete-char -1)
590 (forward-line 1)))
6748645f 591 (nnfolder-normalize-buffer)
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592 (set-buffer nnfolder-current-buffer)
593 (goto-char (point-min))
6748645f 594 (if (not (nnfolder-goto-article article))
eec82323 595 nil
6748645f 596 (nnfolder-delete-mail)
eec82323 597 (insert-buffer-substring buffer)
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598 (unless (or gnus-nov-is-evil nnfolder-nov-is-evil)
599 (save-excursion
600 (set-buffer buffer)
601 (let ((headers (nnfolder-parse-head article
602 (point-min) (point-max))))
603 (with-current-buffer (nnfolder-open-nov group)
604 (if (nnheader-find-nov-line article)
605 (delete-region (point) (progn (forward-line 1) (point))))
606 (nnheader-insert-nov headers)))))
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607 (nnfolder-save-buffer)
608 t)))
609
610(deffoo nnfolder-request-delete-group (group &optional force server)
611 (nnfolder-close-group group server t)
612 ;; Delete all articles in GROUP.
613 (if (not force)
614 () ; Don't delete the articles.
615 ;; Delete the file that holds the group.
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616 (let ((data (nnfolder-group-pathname group))
617 (nov (nnfolder-group-nov-pathname group))
618 (mrk (nnfolder-group-marks-pathname group)))
619 (ignore-errors (delete-file data))
620 (ignore-errors (delete-file nov))
621 (ignore-errors (delete-file mrk))))
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622 ;; Remove the group from all structures.
623 (setq nnfolder-group-alist
624 (delq (assoc group nnfolder-group-alist) nnfolder-group-alist)
625 nnfolder-current-group nil
626 nnfolder-current-buffer nil)
627 ;; Save the active file.
16409b0b 628 (nnfolder-save-active nnfolder-group-alist nnfolder-active-file)
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629 t)
630
631(deffoo nnfolder-request-rename-group (group new-name &optional server)
632 (nnfolder-possibly-change-group group server)
633 (save-excursion
634 (set-buffer nnfolder-current-buffer)
635 (and (file-writable-p buffer-file-name)
636 (ignore-errors
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637 (let ((new-file (nnfolder-group-pathname new-name)))
638 (gnus-make-directory (file-name-directory new-file))
639 (rename-file buffer-file-name new-file)
640 (when (file-exists-p (nnfolder-group-nov-pathname group))
641 (setq new-file (nnfolder-group-nov-pathname new-name))
642 (gnus-make-directory (file-name-directory new-file))
643 (rename-file (nnfolder-group-nov-pathname group) new-file))
644 (when (file-exists-p (nnfolder-group-marks-pathname group))
645 (setq new-file (nnfolder-group-marks-pathname new-name))
646 (gnus-make-directory (file-name-directory new-file))
647 (rename-file (nnfolder-group-marks-pathname group) new-file)))
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648 t)
649 ;; That went ok, so we change the internal structures.
650 (let ((entry (assoc group nnfolder-group-alist)))
651 (and entry (setcar entry new-name))
652 (setq nnfolder-current-buffer nil
653 nnfolder-current-group nil)
654 ;; Save the new group alist.
16409b0b 655 (nnfolder-save-active nnfolder-group-alist nnfolder-active-file)
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656 ;; We kill the buffer instead of renaming it and stuff.
657 (kill-buffer (current-buffer))
658 t))))
659
23f87bed 660(deffoo nnfolder-request-regenerate (server)
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661 (nnfolder-possibly-change-group nil server)
662 (nnfolder-generate-active-file)
663 t)
664
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665\f
666;;; Internal functions.
667
668(defun nnfolder-adjust-min-active (group)
669 ;; Find the lowest active article in this group.
670 (let* ((active (cadr (assoc group nnfolder-group-alist)))
671 (marker (concat "\n" nnfolder-article-marker))
672 (number "[0-9]+")
673 (activemin (cdr active)))
674 (save-excursion
675 (set-buffer nnfolder-current-buffer)
676 (goto-char (point-min))
677 (while (and (search-forward marker nil t)
678 (re-search-forward number nil t))
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679 (let ((newnum (string-to-number (match-string 0))))
680 (if (nnmail-within-headers-p)
681 (setq activemin (min activemin newnum)))))
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682 (setcar active activemin))))
683
684(defun nnfolder-article-string (article)
685 (if (numberp article)
686 (concat "\n" nnfolder-article-marker (int-to-string article) " ")
687 (concat "\nMessage-ID: " article)))
688
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689(defun nnfolder-goto-article (article)
690 "Place point at the start of the headers of ARTICLE.
691ARTICLE can be an article number or a Message-ID.
692Returns t if successful, nil otherwise."
693 (let ((art-string (nnfolder-article-string article))
694 start found)
695 ;; It is likely that we are at or before the delimiter line.
696 ;; We therefore go to the end of the previous line, and start
697 ;; searching from there.
698 (beginning-of-line)
699 (unless (bobp)
700 (forward-char -1))
701 (setq start (point))
702 ;; First search forward.
703 (while (and (setq found (search-forward art-string nil t))
704 (not (nnmail-within-headers-p))))
705 ;; If unsuccessful, search backward from where we started,
706 (unless found
707 (goto-char start)
708 (while (and (setq found (search-backward art-string nil t))
709 (not (nnmail-within-headers-p)))))
710 (when found
711 (nnmail-search-unix-mail-delim-backward))))
712
713(defun nnfolder-delete-mail (&optional leave-delim)
714 "Delete the message that point is in.
715If optional argument LEAVE-DELIM is t, then mailbox delimiter is not
716deleted. Point is left where the deleted region was."
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717 (save-restriction
718 (narrow-to-region
719 (save-excursion
720 ;; In case point is at the beginning of the message already.
721 (forward-line 1)
722 (nnmail-search-unix-mail-delim-backward)
723 (if leave-delim (progn (forward-line 1) (point))
724 (point)))
725 (progn
726 (forward-line 1)
727 (if (nnmail-search-unix-mail-delim)
728 (point)
729 (point-max))))
730 (run-hooks 'nnfolder-delete-mail-hook)
731 (delete-region (point-min) (point-max))))
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732
733(defun nnfolder-possibly-change-group (group &optional server dont-check)
734 ;; Change servers.
735 (when (and server
736 (not (nnfolder-server-opened server)))
737 (nnfolder-open-server server))
738 (unless (gnus-buffer-live-p nnfolder-current-buffer)
739 (setq nnfolder-current-buffer nil
740 nnfolder-current-group nil))
741 ;; Change group.
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742 (let ((file-name-coding-system nnmail-pathname-coding-system))
743 (when (and group
744 (not (equal group nnfolder-current-group))
745 (progn
746 (nnmail-activate 'nnfolder)
747 (and (assoc group nnfolder-group-alist)
748 (file-exists-p (nnfolder-group-pathname group)))))
58724016 749 (if dont-check
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750 (setq nnfolder-current-group group
751 nnfolder-current-buffer nil)
58724016 752 (let (inf file)
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753 ;; If we have to change groups, see if we don't already have
754 ;; the folder in memory. If we do, verify the modtime and
755 ;; destroy the folder if needed so we can rescan it.
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756 (setq nnfolder-current-buffer
757 (nth 1 (assoc group nnfolder-buffer-alist)))
758
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759 ;; If the buffer is not live, make sure it isn't in the
760 ;; alist. If it is live, verify that nobody else has
761 ;; touched the file since last time.
58724016
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762 (when (and nnfolder-current-buffer
763 (not (gnus-buffer-live-p nnfolder-current-buffer)))
764 (setq nnfolder-buffer-alist (delq inf nnfolder-buffer-alist)
765 nnfolder-current-buffer nil))
a8151ef7 766
58724016 767 (setq nnfolder-current-group group)
a8151ef7 768
58724016 769 (when (or (not nnfolder-current-buffer)
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770 (not (verify-visited-file-modtime
771 nnfolder-current-buffer)))
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772 (save-excursion
773 (setq file (nnfolder-group-pathname group))
774 ;; See whether we need to create the new file.
775 (unless (file-exists-p file)
776 (gnus-make-directory (file-name-directory file))
a1506d29 777 (let ((nnmail-file-coding-system
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778 (or nnfolder-file-coding-system-for-write
779 nnfolder-file-coding-system-for-write)))
be1ad767
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780 (nnmail-write-region (point-min) (point-min)
781 file t 'nomesg)))
58724016
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782 (when (setq nnfolder-current-buffer (nnfolder-read-folder group))
783 (set-buffer nnfolder-current-buffer)
784 (push (list group nnfolder-current-buffer)
785 nnfolder-buffer-alist)))))))))
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786
787(defun nnfolder-save-mail (group-art-list)
788 "Called narrowed to an article."
789 (let* (save-list group-art)
790 (goto-char (point-min))
791 ;; The From line may have been quoted by movemail.
16409b0b 792 (when (looking-at ">From")
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793 (delete-char 1))
794 ;; This might come from somewhere else.
16409b0b 795 (unless (looking-at "From ")
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796 (insert "From nobody " (current-time-string) "\n")
797 (goto-char (point-min)))
6748645f 798 ;; Quote all "From " lines in the article.
16409b0b 799 (forward-line 1)
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800 (let (case-fold-search)
801 (while (re-search-forward "^From " nil t)
802 (beginning-of-line)
803 (insert "> ")))
804 (setq save-list group-art-list)
805 (nnmail-insert-lines)
806 (nnmail-insert-xref group-art-list)
807 (run-hooks 'nnmail-prepare-save-mail-hook)
808 (run-hooks 'nnfolder-prepare-save-mail-hook)
809
810 ;; Insert the mail into each of the destination groups.
811 (while (setq group-art (pop group-art-list))
812 ;; Kill any previous newsgroup markers.
813 (goto-char (point-min))
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814 (if (search-forward "\n\n" nil t)
815 (forward-line -1)
816 (goto-char (point-max)))
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817 (while (search-backward (concat "\n" nnfolder-article-marker) nil t)
818 (delete-region (1+ (point)) (progn (forward-line 2) (point))))
819
820 ;; Insert the new newsgroup marker.
821 (nnfolder-insert-newsgroup-line group-art)
822
823 (save-excursion
824 (let ((beg (point-min))
825 (end (point-max))
826 (obuf (current-buffer)))
827 (nnfolder-possibly-change-folder (car group-art))
828 (let ((buffer-read-only nil))
6748645f 829 (nnfolder-normalize-buffer)
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830 (insert-buffer-substring obuf beg end))
831 (unless (or gnus-nov-is-evil nnfolder-nov-is-evil)
832 (set-buffer obuf)
833 (nnfolder-add-nov (car group-art) (cdr group-art)
834 (nnfolder-parse-head nil beg end))))))
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835
836 ;; Did we save it anywhere?
837 save-list))
838
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839(defun nnfolder-normalize-buffer ()
840 "Make sure there are two newlines at the end of the buffer."
841 (goto-char (point-max))
842 (skip-chars-backward "\n")
843 (delete-region (point) (point-max))
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844 (unless (bobp)
845 (insert "\n\n")))
6748645f 846
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847(defun nnfolder-insert-newsgroup-line (group-art)
848 (save-excursion
849 (goto-char (point-min))
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850 (unless (search-forward "\n\n" nil t)
851 (goto-char (point-max))
852 (insert "\n"))
853 (forward-char -1)
854 (insert (format (concat nnfolder-article-marker "%d %s\n")
34128042 855 (cdr group-art) (message-make-date)))))
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856
857(defun nnfolder-active-number (group)
858 ;; Find the next article number in GROUP.
859 (let ((active (cadr (assoc group nnfolder-group-alist))))
860 (if active
861 (setcdr active (1+ (cdr active)))
862 ;; This group is new, so we create a new entry for it.
863 ;; This might be a bit naughty... creating groups on the drop of
864 ;; a hat, but I don't know...
865 (push (list group (setq active (cons 1 1)))
866 nnfolder-group-alist))
867 (cdr active)))
868
869(defun nnfolder-possibly-change-folder (group)
870 (let ((inf (assoc group nnfolder-buffer-alist)))
871 (if (and inf
872 (gnus-buffer-live-p (cadr inf)))
873 (set-buffer (cadr inf))
874 (when inf
875 (setq nnfolder-buffer-alist (delq inf nnfolder-buffer-alist)))
876 (when nnfolder-group-alist
16409b0b 877 (nnfolder-save-active nnfolder-group-alist nnfolder-active-file))
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878 (push (list group (nnfolder-read-folder group))
879 nnfolder-buffer-alist))))
880
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881;; This method has a problem if you've accidentally let the active
882;; list get out of sync with the files. This could happen, say, if
883;; you've accidentally gotten new mail with something other than Gnus
884;; (but why would _that_ ever happen? :-). In that case, we will be
885;; in the middle of processing the file, ready to add new X-Gnus
886;; article number markers, and we'll run across a message with no ID
887;; yet - the active list _may_not_ be ready for us yet.
888
889;; To handle this, I'm modifying this routine to maintain the maximum
890;; ID seen so far, and when we hit a message with no ID, we will
891;; _manually_ scan the rest of the message looking for any more,
892;; possibly higher IDs. We'll assume the maximum that we find is the
893;; highest active. Note that this shouldn't cost us much extra time
894;; at all, but will be a lot less vulnerable to glitches between the
895;; mbox and the active file.
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896
897(defun nnfolder-read-folder (group)
898 (let* ((file (nnfolder-group-pathname group))
23f87bed 899 (nov (nnfolder-group-nov-pathname group))
16409b0b 900 (buffer (set-buffer
a1506d29 901 (let ((nnheader-file-coding-system
16409b0b 902 nnfolder-file-coding-system))
ff4d3926 903 (nnheader-find-file-noselect file t)))))
2c902422 904 (mm-enable-multibyte) ;; Use multibyte buffer for future copying.
d4755e04 905 (buffer-disable-undo)
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906 (if (equal (cadr (assoc group nnfolder-scantime-alist))
907 (nth 5 (file-attributes file)))
908 ;; This looks up-to-date, so we don't do any scanning.
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909 (if (file-exists-p file)
910 buffer
911 (push (list group buffer) nnfolder-buffer-alist)
912 (set-buffer-modified-p t)
16409b0b 913 (nnfolder-save-buffer))
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914 ;; Parse the damn thing.
915 (save-excursion
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916 (goto-char (point-min))
917 ;; Remove any blank lines at the start.
918 (while (eq (following-char) ?\n)
919 (delete-char 1))
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920 (nnmail-activate 'nnfolder)
921 ;; Read in the file.
16409b0b 922 (let ((delim "^From ")
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923 (marker (concat "\n" nnfolder-article-marker))
924 (number "[0-9]+")
925 (active (or (cadr (assoc group nnfolder-group-alist))
926 (cons 1 0)))
927 (scantime (assoc group nnfolder-scantime-alist))
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928 (minid (or (and (boundp 'most-positive-fixnum)
929 most-positive-fixnum)
930 (lsh -1 -1)))
eec82323 931 maxid start end newscantime
23f87bed 932 novbuf articles newnum
eec82323 933 buffer-read-only)
eec82323 934 (setq maxid (cdr active))
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935
936 (unless (or gnus-nov-is-evil nnfolder-nov-is-evil
937 (and (file-exists-p nov)
938 (file-newer-than-file-p nov file)))
939 (unless (file-exists-p nov)
940 (gnus-make-directory (file-name-directory nov)))
941 (with-current-buffer
942 (setq novbuf (nnfolder-open-nov group))
943 (goto-char (point-min))
944 (while (not (eobp))
945 (push (read novbuf) articles)
946 (forward-line 1))
947 (setq articles (nreverse articles))))
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948 (goto-char (point-min))
949
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950 ;; Anytime the active number is 1 or 0, it is suspect. In
951 ;; that case, search the file manually to find the active
952 ;; number. Or, of course, if we're being paranoid. (This
953 ;; would also be the place to build other lists from the
954 ;; header markers, such as expunge lists, etc., if we ever
955 ;; desired to abandon the active file entirely for mboxes.)
eec82323 956 (when (or nnfolder-ignore-active-file
23f87bed 957 novbuf
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958 (< maxid 2))
959 (while (and (search-forward marker nil t)
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960 (looking-at number))
961 (setq newnum (string-to-number (match-string 0)))
962 (when (nnmail-within-headers-p)
963 (setq maxid (max maxid newnum)
964 minid (min minid newnum))
965 (when novbuf
966 (if (memq newnum articles)
967 (setq articles (delq newnum articles))
968 (let ((headers (nnfolder-parse-head newnum)))
969 (with-current-buffer novbuf
970 (nnheader-find-nov-line newnum)
971 (nnheader-insert-nov headers)))))))
972 (when (and novbuf articles)
973 (with-current-buffer novbuf
974 (dolist (article articles)
975 (when (nnheader-find-nov-line article)
976 (delete-region (point)
977 (progn (forward-line 1) (point)))))))
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978 (setcar active (max 1 (min minid maxid)))
979 (setcdr active (max maxid (cdr active)))
980 (goto-char (point-min)))
981
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982 ;; As long as we trust that the user will only insert
983 ;; unmarked mail at the end, go to the end and search
984 ;; backwards for the last marker. Find the start of that
985 ;; message, and begin to search for unmarked messages from
986 ;; there.
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987 (when (not (or nnfolder-distrust-mbox
988 (< maxid 2)))
989 (goto-char (point-max))
990 (unless (re-search-backward marker nil t)
991 (goto-char (point-min)))
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992 ;;(when (nnmail-search-unix-mail-delim)
993 ;; (goto-char (point-min)))
994 )
eec82323 995
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996 ;; Keep track of the active number on our own, and insert it
997 ;; back into the active list when we're done. Also, prime
998 ;; the pump to cut down on the number of searches we do.
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999 (unless (nnmail-search-unix-mail-delim)
1000 (goto-char (point-max)))
1001 (setq end (point-marker))
1002 (while (not (= end (point-max)))
1003 (setq start (marker-position end))
1004 (goto-char end)
23f87bed 1005 ;; There may be more than one "From " line, so we skip past
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1006 ;; them.
1007 (while (looking-at delim)
1008 (forward-line 1))
1009 (set-marker end (if (nnmail-search-unix-mail-delim)
1010 (point)
1011 (point-max)))
1012 (goto-char start)
1013 (when (not (search-forward marker end t))
1014 (narrow-to-region start end)
1015 (nnmail-insert-lines)
1016 (nnfolder-insert-newsgroup-line
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1017 (cons nil
1018 (setq newnum
1019 (nnfolder-active-number group))))
1020 (when novbuf
1021 (let ((headers (nnfolder-parse-head newnum (point-min)
1022 (point-max))))
1023 (with-current-buffer novbuf
1024 (goto-char (point-max))
1025 (nnheader-insert-nov headers))))
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1026 (widen)))
1027
1028 (set-marker end nil)
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1029 ;; Make absolutely sure that the active list reflects
1030 ;; reality!
16409b0b 1031 (nnfolder-save-active nnfolder-group-alist nnfolder-active-file)
23f87bed 1032
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1033 ;; Set the scantime for this group.
1034 (setq newscantime (visited-file-modtime))
1035 (if scantime
1036 (setcdr scantime (list newscantime))
23f87bed 1037 (push (list group newscantime)
eec82323 1038 nnfolder-scantime-alist))
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1039 ;; Save nov.
1040 (when novbuf
1041 (nnfolder-save-nov))
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1042 (current-buffer))))))
1043
1044;;;###autoload
1045(defun nnfolder-generate-active-file ()
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1046 "Look for mbox folders in the nnfolder directory and make them into groups.
1047This command does not work if you use short group names."
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1048 (interactive)
1049 (nnmail-activate 'nnfolder)
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1050 (unless (or gnus-nov-is-evil nnfolder-nov-is-evil)
1051 (dolist (file (directory-files (or nnfolder-nov-directory
1052 nnfolder-directory)
1053 t
1054 (concat
1055 (regexp-quote nnfolder-nov-file-suffix)
1056 "$")))
1057 (when (not (message-mail-file-mbox-p file))
1058 (ignore-errors
1059 (delete-file file)))))
01c52d31 1060 (dolist (file (directory-files nnfolder-directory))
eec82323 1061 (when (and (not (backup-file-name-p file))
23f87bed 1062 (message-mail-file-mbox-p
eec82323 1063 (nnheader-concat nnfolder-directory file)))
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1064 (let ((oldgroup (assoc file nnfolder-group-alist)))
1065 (if oldgroup
1066 (nnheader-message 5 "Refreshing group %s..." file)
1067 (nnheader-message 5 "Adding group %s..." file))
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1068 (if oldgroup
1069 (setq nnfolder-group-alist
1070 (delq oldgroup (copy-sequence nnfolder-group-alist))))
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1071 (push (list file (cons 1 0)) nnfolder-group-alist)
1072 (nnfolder-possibly-change-folder file)
1073 (nnfolder-possibly-change-group file)
1074 (nnfolder-close-group file))))
01c52d31 1075 (nnheader-message 5 ""))
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1076
1077(defun nnfolder-group-pathname (group)
35ef97a5 1078 "Make file name for GROUP."
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1079 (setq group
1080 (mm-encode-coding-string group nnmail-pathname-coding-system))
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1081 (let ((dir (file-name-as-directory (expand-file-name nnfolder-directory))))
1082 ;; If this file exists, we use it directly.
1083 (if (or nnmail-use-long-file-names
1084 (file-exists-p (concat dir group)))
1085 (concat dir group)
1086 ;; If not, we translate dots into slashes.
1087 (concat dir (nnheader-replace-chars-in-string group ?. ?/)))))
1088
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1089(defun nnfolder-group-nov-pathname (group)
1090 "Make pathname for GROUP NOV."
1091 (let ((nnfolder-directory
1092 (or nnfolder-nov-directory nnfolder-directory)))
1093 (concat (nnfolder-group-pathname group) nnfolder-nov-file-suffix)))
1094
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1095(defun nnfolder-save-buffer ()
1096 "Save the buffer."
1097 (when (buffer-modified-p)
1098 (run-hooks 'nnfolder-save-buffer-hook)
a8151ef7 1099 (gnus-make-directory (file-name-directory (buffer-file-name)))
a1506d29 1100 (let ((coding-system-for-write
16409b0b 1101 (or nnfolder-file-coding-system-for-write
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1102 nnfolder-file-coding-system))
1103 (copyright-update nil))
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1104 (save-buffer)))
1105 (unless (or gnus-nov-is-evil nnfolder-nov-is-evil)
1106 (nnfolder-save-nov)))
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1107
1108(defun nnfolder-save-active (group-alist active-file)
1109 (let ((nnmail-active-file-coding-system
1110 (or nnfolder-active-file-coding-system-for-write
1111 nnfolder-active-file-coding-system)))
1112 (nnmail-save-active group-alist active-file)))
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1114(defun nnfolder-open-nov (group)
1115 (or (cdr (assoc group nnfolder-nov-buffer-alist))
1116 (let ((buffer (get-buffer-create (format " *nnfolder overview %s*" group))))
1117 (save-excursion
1118 (set-buffer buffer)
1119 (set (make-local-variable 'nnfolder-nov-buffer-file-name)
1120 (nnfolder-group-nov-pathname group))
1121 (erase-buffer)
1122 (when (file-exists-p nnfolder-nov-buffer-file-name)
1123 (nnheader-insert-file-contents nnfolder-nov-buffer-file-name)))
1124 (push (cons group buffer) nnfolder-nov-buffer-alist)
1125 buffer)))
1126
1127(defun nnfolder-save-nov ()
1128 (save-excursion
1129 (while nnfolder-nov-buffer-alist
1130 (when (buffer-name (cdar nnfolder-nov-buffer-alist))
1131 (set-buffer (cdar nnfolder-nov-buffer-alist))
1132 (when (buffer-modified-p)
1133 (gnus-make-directory (file-name-directory
1134 nnfolder-nov-buffer-file-name))
1135 (nnmail-write-region 1 (point-max) nnfolder-nov-buffer-file-name
1136 nil 'nomesg))
1137 (set-buffer-modified-p nil)
1138 (kill-buffer (current-buffer)))
1139 (setq nnfolder-nov-buffer-alist (cdr nnfolder-nov-buffer-alist)))))
1140
1141(defun nnfolder-nov-delete-article (group article)
1142 (save-excursion
1143 (set-buffer (nnfolder-open-nov group))
1144 (when (nnheader-find-nov-line article)
1145 (delete-region (point) (progn (forward-line 1) (point))))
1146 t))
1147
1148(defun nnfolder-retrieve-headers-with-nov (articles &optional fetch-old)
1149 (if (or gnus-nov-is-evil nnfolder-nov-is-evil)
1150 nil
1151 (let ((nov (nnfolder-group-nov-pathname nnfolder-current-group)))
1152 (when (file-exists-p nov)
1153 (save-excursion
1154 (set-buffer nntp-server-buffer)
1155 (erase-buffer)
1156 (nnheader-insert-file-contents nov)
1157 (if (and fetch-old
1158 (not (numberp fetch-old)))
1159 t ; Don't remove anything.
1160 (nnheader-nov-delete-outside-range
1161 (if fetch-old (max 1 (- (car articles) fetch-old))
1162 (car articles))
1163 (car (last articles)))
1164 t))))))
1165
1166(defun nnfolder-parse-head (&optional number b e)
1167 "Parse the head of the current buffer."
1168 (let ((buf (current-buffer))
1169 chars)
1170 (save-excursion
1171 (unless b
1172 (setq b (if (nnmail-search-unix-mail-delim-backward)
1173 (point) (point-min)))
1174 (forward-line 1)
1175 (setq e (if (nnmail-search-unix-mail-delim)
1176 (point) (point-max))))
1177 (setq chars (- e b))
1178 (unless (zerop chars)
1179 (goto-char b)
1180 (if (search-forward "\n\n" e t) (setq e (1- (point)))))
1181 (with-temp-buffer
1182 (insert-buffer-substring buf b e)
1183 (let ((headers (nnheader-parse-naked-head)))
1184 (mail-header-set-chars headers chars)
1185 (mail-header-set-number headers number)
1186 headers)))))
1187
1188(defun nnfolder-add-nov (group article headers)
1189 "Add a nov line for the GROUP base."
1190 (save-excursion
1191 (set-buffer (nnfolder-open-nov group))
1192 (goto-char (point-max))
1193 (mail-header-set-number headers article)
1194 (nnheader-insert-nov headers)))
1195
1196(deffoo nnfolder-request-set-mark (group actions &optional server)
1197 (when (and server
1198 (not (nnfolder-server-opened server)))
1199 (nnfolder-open-server server))
1200 (unless nnfolder-marks-is-evil
1201 (nnfolder-open-marks group server)
1202 (dolist (action actions)
1203 (let ((range (nth 0 action))
1204 (what (nth 1 action))
1205 (marks (nth 2 action)))
c1d7d285 1206 (assert (or (eq what 'add) (eq what 'del)) nil
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1207 "Unknown request-set-mark action: %s" what)
1208 (dolist (mark marks)
1209 (setq nnfolder-marks (gnus-update-alist-soft
1210 mark
1211 (funcall (if (eq what 'add) 'gnus-range-add
1212 'gnus-remove-from-range)
1213 (cdr (assoc mark nnfolder-marks)) range)
1214 nnfolder-marks)))))
1215 (nnfolder-save-marks group server))
1216 nil)
1217
1218(deffoo nnfolder-request-update-info (group info &optional server)
1219 ;; Change servers.
1220 (when (and server
1221 (not (nnfolder-server-opened server)))
1222 (nnfolder-open-server server))
1223 (when (and (not nnfolder-marks-is-evil) (nnfolder-marks-changed-p group))
1224 (nnheader-message 8 "Updating marks for %s..." group)
1225 (nnfolder-open-marks group server)
1226 ;; Update info using `nnfolder-marks'.
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1227 (mapc (lambda (pred)
1228 (unless (memq (cdr pred) gnus-article-unpropagated-mark-lists)
1229 (gnus-info-set-marks
1230 info
1231 (gnus-update-alist-soft
1232 (cdr pred)
1233 (cdr (assq (cdr pred) nnfolder-marks))
1234 (gnus-info-marks info))
1235 t)))
1236 gnus-article-mark-lists)
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1237 (let ((seen (cdr (assq 'read nnfolder-marks))))
1238 (gnus-info-set-read info
1239 (if (and (integerp (car seen))
1240 (null (cdr seen)))
1241 (list (cons (car seen) (car seen)))
1242 seen)))
1243 (nnheader-message 8 "Updating marks for %s...done" group))
1244 info)
1245
1246(defun nnfolder-group-marks-pathname (group)
1247 "Make pathname for GROUP NOV."
1248 (let ((nnfolder-directory (or nnfolder-marks-directory nnfolder-directory)))
1249 (concat (nnfolder-group-pathname group) nnfolder-marks-file-suffix)))
1250
1251(defun nnfolder-marks-changed-p (group)
1252 (let ((file (nnfolder-group-marks-pathname group)))
1253 (if (null (gnus-gethash file nnfolder-marks-modtime))
1254 t ;; never looked at marks file, assume it has changed
1255 (not (equal (gnus-gethash file nnfolder-marks-modtime)
1256 (nth 5 (file-attributes file)))))))
1257
1258(defun nnfolder-save-marks (group server)
1259 (let ((file-name-coding-system nnmail-pathname-coding-system)
1260 (file (nnfolder-group-marks-pathname group)))
1261 (condition-case err
1262 (progn
1263 (with-temp-file file
1264 (erase-buffer)
1265 (gnus-prin1 nnfolder-marks)
1266 (insert "\n"))
1267 (gnus-sethash file
1268 (nth 5 (file-attributes file))
1269 nnfolder-marks-modtime))
1270 (error (or (gnus-yes-or-no-p
1271 (format "Could not write to %s (%s). Continue? " file err))
141fa910 1272 (error "Cannot write to %s (%s)" file err))))))
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1273
1274(defun nnfolder-open-marks (group server)
1275 (let ((file (nnfolder-group-marks-pathname group)))
1276 (if (file-exists-p file)
1277 (condition-case err
1278 (with-temp-buffer
1279 (gnus-sethash file (nth 5 (file-attributes file))
1280 nnfolder-marks-modtime)
1281 (nnheader-insert-file-contents file)
1282 (setq nnfolder-marks (read (current-buffer)))
1283 (dolist (el gnus-article-unpropagated-mark-lists)
1284 (setq nnfolder-marks (gnus-remassoc el nnfolder-marks))))
1285 (error (or (gnus-yes-or-no-p
1286 (format "Error reading nnfolder marks file %s (%s). Continuing will use marks from .newsrc.eld. Continue? " file err))
1287 (error "Cannot read nnfolder marks file %s (%s)" file err))))
1288 ;; User didn't have a .marks file. Probably first time
1289 ;; user of the .marks stuff. Bootstrap it from .newsrc.eld.
1290 (let ((info (gnus-get-info
1291 (gnus-group-prefixed-name
1292 group
1293 (gnus-server-to-method (format "nnfolder:%s" server))))))
1294 (nnheader-message 7 "Bootstrapping marks for %s..." group)
1295 (setq nnfolder-marks (gnus-info-marks info))
1296 (push (cons 'read (gnus-info-read info)) nnfolder-marks)
1297 (dolist (el gnus-article-unpropagated-mark-lists)
1298 (setq nnfolder-marks (gnus-remassoc el nnfolder-marks)))
1299 (nnfolder-save-marks group server)
1300 (nnheader-message 7 "Bootstrapping marks for %s...done" group)))))
1301
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1302(provide 'nnfolder)
1303
cbee283d 1304;; arch-tag: a040d0f4-4f4e-445f-8972-839575c5f7e6
eec82323 1305;;; nnfolder.el ends here