1 ;;; nnml.el --- mail spool access for Gnus
3 ;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
4 ;; 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
6 ;; Authors: Didier Verna <didier@xemacs.org> (adding compaction)
7 ;; Simon Josefsson <simon@josefsson.org> (adding MARKS)
8 ;; Lars Magne Ingebrigtsen <larsi@gnus.org>
9 ;; Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
10 ;; Keywords: news, mail
12 ;; This file is part of GNU Emacs.
14 ;; GNU Emacs is free software; you can redistribute it and/or modify
15 ;; it under the terms of the GNU General Public License as published by
16 ;; the Free Software Foundation; either version 3, or (at your option)
19 ;; GNU Emacs is distributed in the hope that it will be useful,
20 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
21 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 ;; GNU General Public License for more details.
24 ;; You should have received a copy of the GNU General Public License
25 ;; along with GNU Emacs; see the file COPYING. If not, write to the
26 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
27 ;; Boston, MA 02110-1301, USA.
31 ;; Based on nnspool.el by Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>.
32 ;; For an overview of what the interface functions do, please see the
41 (eval-when-compile (require 'cl
))
44 (autoload 'gnus-article-unpropagatable-p
"gnus-sum")
45 (autoload 'gnus-backlog-remove-article
"gnus-bcklg"))
49 (defvoo nnml-directory message-directory
50 "Spool directory for the nnml mail backend.")
52 (defvoo nnml-active-file
53 (expand-file-name "active" nnml-directory
)
56 (defvoo nnml-newsgroups-file
57 (expand-file-name "newsgroups" nnml-directory
)
58 "Mail newsgroups description file.")
60 (defvoo nnml-get-new-mail t
61 "If non-nil, nnml will check the incoming mail file and split the mail.")
63 (defvoo nnml-nov-is-evil nil
64 "If non-nil, Gnus will never generate and use nov databases for mail spools.
65 Using nov databases will speed up header fetching considerably.
66 This variable shouldn't be flipped much. If you have, for some reason,
67 set this to t, and want to set it to nil again, you should always run
68 the `nnml-generate-nov-databases' command. The function will go
69 through all nnml directories and generate nov databases for them
70 all. This may very well take some time.")
72 (defvoo nnml-marks-is-evil nil
73 "If non-nil, Gnus will never generate and use marks file for mail spools.
74 Using marks files makes it possible to backup and restore mail groups
75 separately from `.newsrc.eld'. If you have, for some reason, set this
76 to t, and want to set it to nil again, you should always remove the
77 corresponding marks file (usually named `.marks' in the nnml group
78 directory, but see `nnml-marks-file-name') for the group. Then the
79 marks file will be regenerated properly by Gnus.")
81 (defvoo nnml-prepare-save-mail-hook nil
82 "Hook run narrowed to an article before saving.")
84 (defvoo nnml-inhibit-expiry nil
85 "If non-nil, inhibit expiry.")
87 (defvoo nnml-use-compressed-files nil
88 "If non-nil, allow using compressed message files.
90 If it is a string, use it as the file extension which specifies
91 the compression program. You can set it to \".bz2\" if your Emacs
92 supports auto-compression using the bzip2 program. A value of t
93 is equivalent to \".gz\".")
95 (defvoo nnml-compressed-files-size-threshold
1000
96 "Default size threshold for compressed message files.
97 Message files with bodies larger than that many characters will
98 be automatically compressed if `nnml-use-compressed-files' is
103 (defconst nnml-version
"nnml 1.0"
106 (defvoo nnml-nov-file-name
".overview")
107 (defvoo nnml-marks-file-name
".marks")
109 (defvoo nnml-current-directory nil
)
110 (defvoo nnml-current-group nil
)
111 (defvoo nnml-status-string
"")
112 (defvoo nnml-nov-buffer-alist nil
)
113 (defvoo nnml-group-alist nil
)
114 (defvoo nnml-active-timestamp nil
)
115 (defvoo nnml-article-file-alist nil
)
117 (defvoo nnml-generate-active-function
'nnml-generate-active-info
)
119 (defvar nnml-nov-buffer-file-name nil
)
121 (defvoo nnml-file-coding-system nnmail-file-coding-system
)
123 (defvoo nnml-marks nil
)
125 (defvar nnml-marks-modtime
(gnus-make-hashtable))
128 ;;; Interface functions.
130 (nnoo-define-basics nnml
)
133 (defsubst nnml-group-name-charset
(group server-or-method
)
134 (gnus-group-name-charset
135 (if (stringp server-or-method
)
136 (gnus-server-to-method
137 (if (string-match "\\+" server-or-method
)
138 (concat (substring server-or-method
0 (match-beginning 0))
139 ":" (substring server-or-method
(match-end 0)))
140 (concat "nnml:" server-or-method
)))
141 (or server-or-method gnus-command-method
'(nnml "")))
144 (defun nnml-decoded-group-name (group &optional server-or-method
)
145 "Return a decoded group name of GROUP on SERVER-OR-METHOD."
146 (if nnmail-group-names-not-encoded-p
148 (mm-decode-coding-string
150 (nnml-group-name-charset group server-or-method
))))
152 (defun nnml-encoded-group-name (group &optional server-or-method
)
153 "Return an encoded group name of GROUP on SERVER-OR-METHOD."
154 (mm-encode-coding-string
156 (nnml-group-name-charset group server-or-method
)))
158 (defun nnml-group-pathname (group &optional file server
)
159 "Return an absolute file name of FILE for GROUP on SERVER."
160 (nnmail-group-pathname (inline (nnml-decoded-group-name group server
))
161 nnml-directory file
))
163 (deffoo nnml-retrieve-headers
(sequence &optional group server fetch-old
)
164 (when (nnml-possibly-change-directory group server
)
166 (set-buffer nntp-server-buffer
)
169 (number (length sequence
))
171 (file-name-coding-system nnmail-pathname-coding-system
)
173 (if (stringp (car sequence
))
175 (if (nnml-retrieve-headers-with-nov sequence fetch-old
)
178 (setq article
(car sequence
))
179 (setq file
(nnml-article-to-file article
))
182 (not (file-directory-p file
)))
183 (insert (format "221 %d Article retrieved.\n" article
))
185 (nnheader-insert-head file
)
187 (if (re-search-forward "\n\r?\n" nil t
)
189 (goto-char (point-max))
192 (delete-region (point) (point-max)))
193 (setq sequence
(cdr sequence
))
194 (setq count
(1+ count
))
195 (and (numberp nnmail-large-newsgroup
)
196 (> number nnmail-large-newsgroup
)
198 (nnheader-message 6 "nnml: Receiving headers... %d%%"
199 (/ (* count
100) number
))))
201 (and (numberp nnmail-large-newsgroup
)
202 (> number nnmail-large-newsgroup
)
203 (nnheader-message 6 "nnml: Receiving headers...done"))
205 (nnheader-fold-continuation-lines)
208 (deffoo nnml-open-server
(server &optional defs
)
209 (nnoo-change-server 'nnml server defs
)
210 (when (not (file-exists-p nnml-directory
))
211 (ignore-errors (make-directory nnml-directory t
)))
213 ((not (file-exists-p nnml-directory
))
215 (nnheader-report 'nnml
"Couldn't create directory: %s" nnml-directory
))
216 ((not (file-directory-p (file-truename nnml-directory
)))
218 (nnheader-report 'nnml
"Not a directory: %s" nnml-directory
))
220 (nnheader-report 'nnml
"Opened server %s using directory %s"
221 server nnml-directory
)
224 (deffoo nnml-request-regenerate
(server)
225 (nnml-possibly-change-directory nil server
)
226 (nnml-generate-nov-databases server
)
229 (deffoo nnml-request-article
(id &optional group server buffer
)
230 (nnml-possibly-change-directory group server
)
231 (let* ((nntp-server-buffer (or buffer nntp-server-buffer
))
232 (file-name-coding-system nnmail-pathname-coding-system
)
233 path gpath group-num
)
235 (when (and (setq group-num
(nnml-find-group-number id server
))
237 (assq (cdr group-num
)
238 (nnheader-article-to-file-alist
239 (setq gpath
(nnml-group-pathname (car group-num
)
241 (setq path
(concat gpath
(int-to-string (cdr group-num
)))))
242 (setq path
(nnml-article-to-file id
)))
245 (nnheader-report 'nnml
"No such article: %s" id
))
246 ((not (file-exists-p path
))
247 (nnheader-report 'nnml
"No such file: %s" path
))
248 ((file-directory-p path
)
249 (nnheader-report 'nnml
"File is a directory: %s" path
))
250 ((not (save-excursion (let ((nnmail-file-coding-system
251 nnml-file-coding-system
))
252 (nnmail-find-file path
))))
253 (nnheader-report 'nnml
"Couldn't read file: %s" path
))
255 (nnheader-report 'nnml
"Article %s retrieved" id
)
256 ;; We return the article number.
257 (cons (if group-num
(car group-num
) group
)
258 (string-to-number (file-name-nondirectory path
)))))))
260 (deffoo nnml-request-group
(group &optional server dont-check
)
261 (let ((file-name-coding-system nnmail-pathname-coding-system
))
263 ((not (nnml-possibly-change-directory group server
))
264 (nnheader-report 'nnml
"Invalid group (no such directory)"))
265 ((not (file-exists-p nnml-current-directory
))
266 (nnheader-report 'nnml
"Directory %s does not exist"
267 nnml-current-directory
))
268 ((not (file-directory-p nnml-current-directory
))
269 (nnheader-report 'nnml
"%s is not a directory" nnml-current-directory
))
271 (nnheader-report 'nnml
"Group %s selected" group
)
274 (nnheader-re-read-dir nnml-current-directory
)
275 (nnmail-activate 'nnml
)
276 (let ((active (nth 1 (assoc group nnml-group-alist
))))
278 (nnheader-report 'nnml
"No such group: %s" group
)
279 (nnheader-report 'nnml
"Selected group %s" group
)
280 (nnheader-insert "211 %d %d %d %s\n"
281 (max (1+ (- (cdr active
) (car active
))) 0)
282 (car active
) (cdr active
) group
)))))))
284 (deffoo nnml-request-scan
(&optional group server
)
285 (setq nnml-article-file-alist nil
)
286 (nnml-possibly-change-directory group server
)
287 (nnmail-get-new-mail 'nnml
'nnml-save-nov nnml-directory group
))
289 (deffoo nnml-close-group
(group &optional server
)
290 (setq nnml-article-file-alist nil
)
293 (deffoo nnml-request-create-group
(group &optional server args
)
294 (nnml-possibly-change-directory nil server
)
295 (nnmail-activate 'nnml
)
297 ((let ((file (directory-file-name (nnml-group-pathname group nil server
)))
298 (file-name-coding-system nnmail-pathname-coding-system
))
299 (and (file-exists-p file
)
300 (not (file-directory-p file
))))
301 (nnheader-report 'nnml
"%s is a file"
302 (directory-file-name (nnml-group-pathname group
304 ((assoc group nnml-group-alist
)
308 (push (list group
(setq active
(cons 1 0)))
310 (nnml-possibly-create-directory group server
)
311 (nnml-possibly-change-directory group server
)
312 (let* ((file-name-coding-system nnmail-pathname-coding-system
)
313 (articles (nnml-directory-articles nnml-current-directory
)))
315 (setcar active
(apply 'min articles
))
316 (setcdr active
(apply 'max articles
))))
317 (nnmail-save-active nnml-group-alist nnml-active-file
)
320 (deffoo nnml-request-list
(&optional server
)
322 (let ((nnmail-file-coding-system nnmail-active-file-coding-system
)
323 (file-name-coding-system nnmail-pathname-coding-system
))
324 (nnmail-find-file nnml-active-file
))
325 (setq nnml-group-alist
(nnmail-get-active))
328 (deffoo nnml-request-newgroups
(date &optional server
)
329 (nnml-request-list server
))
331 (deffoo nnml-request-list-newsgroups
(&optional server
)
333 (nnmail-find-file nnml-newsgroups-file
)))
335 (deffoo nnml-request-expire-articles
(articles group
&optional server force
)
336 (nnml-possibly-change-directory group server
)
337 (let* ((file-name-coding-system nnmail-pathname-coding-system
)
339 (nnml-directory-articles nnml-current-directory
))
341 (decoded (nnml-decoded-group-name group server
))
342 article rest mod-time number target
)
343 (nnmail-activate 'nnml
)
345 (setq active-articles
(sort active-articles
'<))
346 ;; Articles not listed in active-articles are already gone,
347 ;; so don't try to expire them.
348 (setq articles
(gnus-sorted-intersection articles active-articles
))
350 (while (and articles is-old
)
351 (if (and (setq article
(nnml-article-to-file
352 (setq number
(pop articles
))))
353 (setq mod-time
(nth 5 (file-attributes article
)))
354 (nnml-deletable-article-p group number
)
355 (setq is-old
(nnmail-expired-article-p group mod-time force
356 nnml-inhibit-expiry
)))
358 ;; Allow a special target group.
359 (setq target nnmail-expiry-target
)
360 (unless (eq target
'delete
)
362 (nnml-request-article number group server
(current-buffer))
363 (let (nnml-current-directory
365 nnml-article-file-alist
)
366 (when (functionp target
)
367 (setq target
(funcall target group
)))
369 (or (gnus-request-group target
)
370 (gnus-request-create-group target
)))
371 (nnmail-expiry-target-group target group
)
373 ;; Maybe directory is changed during nnmail-expiry-target-group.
374 (nnml-possibly-change-directory group server
))
377 (nnheader-message 5 "Deleting article %s in %s"
380 (funcall nnmail-delete-file-function article
)
383 (setq active-articles
(delq number active-articles
))
384 (nnml-nov-delete-article group number
))
387 (let ((active (nth 1 (assoc group nnml-group-alist
))))
389 (setcar active
(or (and active-articles
390 (apply 'min active-articles
))
392 (nnmail-save-active nnml-group-alist nnml-active-file
))
394 (nconc rest articles
)))
396 (deffoo nnml-request-move-article
397 (article group server accept-form
&optional last move-is-internal
)
398 (let ((buf (get-buffer-create " *nnml move*"))
399 (file-name-coding-system nnmail-pathname-coding-system
)
401 (nnml-possibly-change-directory group server
)
402 (nnml-update-file-alist)
404 (nnml-deletable-article-p group article
)
405 (nnml-request-article article group server
)
406 (let (nnml-current-directory
408 nnml-article-file-alist
)
411 (insert-buffer-substring nntp-server-buffer
)
412 (setq result
(eval accept-form
))
413 (kill-buffer (current-buffer))
416 (nnml-possibly-change-directory group server
)
418 (funcall nnmail-delete-file-function
419 (nnml-article-to-file article
))
421 (nnml-nov-delete-article group article
)
424 (nnmail-save-active nnml-group-alist nnml-active-file
))))
427 (deffoo nnml-request-accept-article
(group &optional server last
)
428 (nnml-possibly-change-directory group server
)
429 (nnmail-check-syntax)
431 (when nnmail-cache-accepted-message-ids
432 (nnmail-cache-insert (nnmail-fetch-field "message-id")
434 (nnmail-fetch-field "subject")
435 (nnmail-fetch-field "from")))
438 (nnmail-activate 'nnml
)
439 (setq result
(car (nnml-save-mail
440 (list (cons group
(nnml-active-number group
444 (nnmail-save-active nnml-group-alist nnml-active-file
)
445 (and last
(nnml-save-nov))))
447 (nnmail-activate 'nnml
)
448 (if (and (not (setq result
(nnmail-article-group
450 (nnml-active-number group
,server
)))))
451 (yes-or-no-p "Moved to `junk' group; delete article? "))
453 (setq result
(car (nnml-save-mail result server
))))
455 (nnmail-save-active nnml-group-alist nnml-active-file
)
456 (when nnmail-cache-accepted-message-ids
457 (nnmail-cache-close))
461 (deffoo nnml-request-post
(&optional server
)
462 (nnmail-do-request-post 'nnml-request-accept-article server
))
464 (deffoo nnml-request-replace-article
(article group buffer
)
465 (nnml-possibly-change-directory group
)
468 (nnml-possibly-create-directory group
)
469 (let ((chars (nnmail-insert-lines))
470 (art (concat (int-to-string article
) "\t"))
474 (point-min) (point-max)
475 (or (nnml-article-to-file article
)
476 (expand-file-name (int-to-string article
)
477 nnml-current-directory
))
478 nil
(if (nnheader-be-verbose 5) nil
'nomesg
))
480 (setq headers
(nnml-parse-head chars article
))
481 ;; Replace the NOV line in the NOV file.
483 (set-buffer (nnml-open-nov group
))
484 (goto-char (point-min))
485 (if (or (looking-at art
)
486 (search-forward (concat "\n" art
) nil t
))
487 ;; Delete the old NOV line.
489 ;; The line isn't here, so we have to find out where
490 ;; we should insert it. (This situation should never
491 ;; occur, but one likes to make sure...)
492 (while (and (looking-at "[0-9]+\t")
495 (match-beginning 0) (match-end 0)))
497 (zerop (forward-line 1)))))
499 (nnheader-insert-nov headers
)
503 (deffoo nnml-request-delete-group
(group &optional force server
)
504 (nnml-possibly-change-directory group server
)
505 (let ((file (directory-file-name nnml-current-directory
))
506 (file-name-coding-system nnmail-pathname-coding-system
))
507 (if (file-exists-p file
)
508 (if (file-directory-p file
)
511 ;; Delete all articles in GROUP.
514 nnml-current-directory t
516 nnheader-numerical-short-files
517 "\\|" (regexp-quote nnml-nov-file-name
) "$"
518 "\\|" (regexp-quote nnml-marks-file-name
) "$")))
519 (decoded (nnml-decoded-group-name group server
)))
520 (dolist (article articles
)
521 (when (file-writable-p article
)
522 (nnheader-message 5 "Deleting article %s in %s..."
523 (file-name-nondirectory article
)
525 (funcall nnmail-delete-file-function article
))))
526 ;; Try to delete the directory itself.
527 (ignore-errors (delete-directory nnml-current-directory
))))
528 (nnheader-report 'nnml
"%s is not a directory" file
))
529 (nnheader-report 'nnml
"No such directory: %s/" file
))
530 ;; Remove the group from all structures.
531 (setq nnml-group-alist
532 (delq (assoc group nnml-group-alist
) nnml-group-alist
)
533 nnml-current-group nil
534 nnml-current-directory nil
)
535 ;; Save the active file.
536 (nnmail-save-active nnml-group-alist nnml-active-file
))
539 (deffoo nnml-request-rename-group
(group new-name
&optional server
)
540 (nnml-possibly-change-directory group server
)
541 (let ((new-dir (nnml-group-pathname new-name nil server
))
542 (old-dir (nnml-group-pathname group nil server
))
543 (file-name-coding-system nnmail-pathname-coding-system
))
545 (make-directory new-dir t
)
547 ;; We move the articles file by file instead of renaming
548 ;; the directory -- there may be subgroups in this group.
549 ;; One might be more clever, I guess.
550 (dolist (file (nnheader-article-to-file-alist old-dir
))
552 (concat old-dir
(cdr file
))
553 (concat new-dir
(cdr file
))))
554 ;; Move .overview file.
555 (let ((overview (concat old-dir nnml-nov-file-name
)))
556 (when (file-exists-p overview
)
557 (rename-file overview
(concat new-dir nnml-nov-file-name
))))
559 (let ((marks (concat old-dir nnml-marks-file-name
)))
560 (when (file-exists-p marks
)
561 (rename-file marks
(concat new-dir nnml-marks-file-name
))))
562 (when (<= (length (directory-files old-dir
)) 2)
563 (ignore-errors (delete-directory old-dir
)))
564 ;; That went ok, so we change the internal structures.
565 (let ((entry (assoc group nnml-group-alist
)))
567 (setcar entry new-name
))
568 (setq nnml-current-directory nil
569 nnml-current-group nil
)
570 ;; Save the new group alist.
571 (nnmail-save-active nnml-group-alist nnml-active-file
)
574 (deffoo nnml-set-status
(article name value
&optional group server
)
575 (nnml-possibly-change-directory group server
)
576 (let ((file (nnml-article-to-file article
)))
578 ((not (file-exists-p file
))
579 (nnheader-report 'nnml
"File %s does not exist" file
))
582 (nnheader-insert-file-contents file
)
583 (nnmail-replace-status name value
))
587 ;;; Internal functions.
589 (defun nnml-article-to-file (article)
590 (nnml-update-file-alist)
593 (if nnml-use-compressed-files
594 (cdr (assq article nnml-article-file-alist
))
595 (number-to-string article
)))
596 (expand-file-name file nnml-current-directory
)
597 (when (not nnheader-directory-files-is-safe
)
598 ;; Just to make sure nothing went wrong when reading over NFS --
601 (setq file
(expand-file-name (number-to-string article
)
602 nnml-current-directory
)))
603 (nnml-update-file-alist t
)
606 (defun nnml-deletable-article-p (group article
)
607 "Say whether ARTICLE in GROUP can be deleted."
608 (let ((file-name-coding-system nnmail-pathname-coding-system
)
610 (when (setq path
(nnml-article-to-file article
))
611 (when (file-writable-p path
)
612 (or (not nnmail-keep-last-article
)
613 (not (eq (cdr (nth 1 (assoc group nnml-group-alist
)))
616 ;; Find an article number in the current group given the Message-ID.
617 (defun nnml-find-group-number (id server
)
619 (set-buffer (get-buffer-create " *nnml id*"))
620 (let ((alist nnml-group-alist
)
622 ;; We want to look through all .overview files, but we want to
623 ;; start with the one in the current directory. It seems most
624 ;; likely that the article we are looking for is in that group.
625 (if (setq number
(nnml-find-id nnml-current-group id server
))
626 (cons nnml-current-group number
)
627 ;; It wasn't there, so we look through the other groups as well.
628 (while (and (not number
)
630 (or (string= (caar alist
) nnml-current-group
)
631 (setq number
(nnml-find-id (caar alist
) id server
)))
633 (setq alist
(cdr alist
))))
635 (cons (caar alist
) number
))))))
637 (defun nnml-find-id (group id server
)
639 (let ((nov (nnml-group-pathname group nnml-nov-file-name server
))
641 (when (file-exists-p nov
)
642 (nnheader-insert-file-contents nov
)
643 (while (and (not found
)
644 (search-forward id nil t
)) ; We find the ID.
645 ;; And the id is in the fourth field.
646 (if (not (and (search-backward "\t" nil t
4)
647 (not (search-backward "\t" (point-at-bol) t
))))
651 ;; We return the article number.
653 (ignore-errors (read (current-buffer))))))
656 (defun nnml-retrieve-headers-with-nov (articles &optional fetch-old
)
657 (if (or gnus-nov-is-evil nnml-nov-is-evil
)
659 (let ((nov (expand-file-name nnml-nov-file-name nnml-current-directory
)))
660 (when (file-exists-p nov
)
662 (set-buffer nntp-server-buffer
)
664 (nnheader-insert-file-contents nov
)
666 (not (numberp fetch-old
)))
667 t
; Don't remove anything.
668 (nnheader-nov-delete-outside-range
669 (if fetch-old
(max 1 (- (car articles
) fetch-old
))
671 (car (last articles
)))
674 (defun nnml-possibly-change-directory (group &optional server
)
676 (not (nnml-server-opened server
)))
677 (nnml-open-server server
))
680 (let ((pathname (nnml-group-pathname group nil server
))
681 (file-name-coding-system nnmail-pathname-coding-system
))
682 (when (not (equal pathname nnml-current-directory
))
683 (setq nnml-current-directory pathname
684 nnml-current-group group
685 nnml-article-file-alist nil
))
686 (file-exists-p nnml-current-directory
))))
688 (defun nnml-possibly-create-directory (group &optional server
)
689 (let ((dir (nnml-group-pathname group nil server
))
690 (file-name-coding-system nnmail-pathname-coding-system
))
691 (unless (file-exists-p dir
)
692 (make-directory (directory-file-name dir
) t
)
693 (nnheader-message 5 "Creating mail directory %s" dir
))))
695 (defun nnml-save-mail (group-art &optional server
)
696 "Save a mail into the groups GROUP-ART in the nnml server SERVER.
697 GROUP-ART is a list that each element is a cons of a group name and an
698 article number. This function is called narrowed to an article."
699 (let* ((chars (nnmail-insert-lines))
700 (extension (and nnml-use-compressed-files
701 (> chars nnml-compressed-files-size-threshold
)
702 (if (stringp nnml-use-compressed-files
)
703 nnml-use-compressed-files
705 decoded dec file first headers
)
706 (when nnmail-group-names-not-encoded-p
707 (dolist (ga (prog1 group-art
(setq group-art nil
)))
708 (setq group-art
(nconc group-art
709 (list (cons (nnml-encoded-group-name (car ga
)
712 decoded
(nconc decoded
(list (car ga
)))))
714 (nnmail-insert-xref group-art
)
715 (run-hooks 'nnmail-prepare-save-mail-hook
)
716 (run-hooks 'nnml-prepare-save-mail-hook
)
717 (goto-char (point-min))
718 (while (looking-at "From ")
719 (replace-match "X-From-Line: ")
721 ;; We save the article in all the groups it belongs in.
722 (dolist (ga group-art
)
723 (if nnmail-group-names-not-encoded-p
725 (nnml-possibly-create-directory (car decoded
) server
)
726 (setq file
(nnmail-group-pathname
727 (pop decoded
) nnml-directory
728 (concat (number-to-string (cdr ga
)) extension
))))
729 (nnml-possibly-create-directory (car ga
) server
)
730 (setq file
(nnml-group-pathname
731 (car ga
) (concat (number-to-string (cdr ga
)) extension
)
734 ;; It was already saved, so we just make a hard link.
735 (let ((file-name-coding-system nnmail-pathname-coding-system
))
736 (funcall nnmail-crosspost-link-function first file t
))
738 (nnmail-write-region (point-min) (point-max) file nil
739 (if (nnheader-be-verbose 5) nil
'nomesg
))
741 ;; Generate a nov line for this article. We generate the nov
742 ;; line after saving, because nov generation destroys the
744 (setq headers
(nnml-parse-head chars
))
745 ;; Output the nov line to all nov databases that should have it.
746 (if nnmail-group-names-not-encoded-p
747 (dolist (ga group-art
)
748 (nnml-add-nov (pop dec
) (cdr ga
) headers
))
749 (dolist (ga group-art
)
750 (nnml-add-nov (car ga
) (cdr ga
) headers
))))
753 (defun nnml-active-number (group &optional server
)
754 "Compute the next article number in GROUP on SERVER."
755 (let ((active (cadr (assoc (if nnmail-group-names-not-encoded-p
756 (nnml-encoded-group-name group server
)
759 ;; The group wasn't known to nnml, so we just create an active
762 ;; Perhaps the active file was corrupt? See whether
763 ;; there are any articles in this group.
764 (nnml-possibly-create-directory group server
)
765 (nnml-possibly-change-directory group server
)
766 (unless nnml-article-file-alist
767 (setq nnml-article-file-alist
769 (nnml-current-group-article-to-file-alist)
770 'car-less-than-car
)))
772 (if nnml-article-file-alist
773 (cons (caar nnml-article-file-alist
)
774 (caar (last nnml-article-file-alist
)))
776 (push (list group active
) nnml-group-alist
))
777 (setcdr active
(1+ (cdr active
)))
778 (while (file-exists-p
779 (nnml-group-pathname group
(int-to-string (cdr active
)) server
))
780 (setcdr active
(1+ (cdr active
))))
783 (defun nnml-add-nov (group article headers
)
784 "Add a nov line for the GROUP base."
786 (set-buffer (nnml-open-nov group
))
787 (goto-char (point-max))
788 (mail-header-set-number headers article
)
789 (nnheader-insert-nov headers
)))
791 (defsubst nnml-header-value
()
792 (buffer-substring (match-end 0) (point-at-eol)))
794 (defun nnml-parse-head (chars &optional number
)
795 "Parse the head of the current buffer."
798 (unless (zerop (buffer-size))
800 (goto-char (point-min))
801 (if (re-search-forward "\n\r?\n" nil t
)
804 (let ((headers (nnheader-parse-naked-head)))
805 (mail-header-set-chars headers chars
)
806 (mail-header-set-number headers number
)
809 (defun nnml-get-nov-buffer (group)
810 (let* ((decoded (nnml-decoded-group-name group
))
811 (buffer (get-buffer-create (format " *nnml overview %s*" decoded
)))
812 (file-name-coding-system nnmail-pathname-coding-system
))
815 (set (make-local-variable 'nnml-nov-buffer-file-name
)
816 (nnmail-group-pathname decoded nnml-directory nnml-nov-file-name
))
818 (when (file-exists-p nnml-nov-buffer-file-name
)
819 (nnheader-insert-file-contents nnml-nov-buffer-file-name
)))
822 (defun nnml-open-nov (group)
823 (or (cdr (assoc group nnml-nov-buffer-alist
))
824 (let ((buffer (nnml-get-nov-buffer group
)))
825 (push (cons group buffer
) nnml-nov-buffer-alist
)
828 (defun nnml-save-nov ()
830 (while nnml-nov-buffer-alist
831 (when (buffer-name (cdar nnml-nov-buffer-alist
))
832 (set-buffer (cdar nnml-nov-buffer-alist
))
833 (when (buffer-modified-p)
834 (nnmail-write-region (point-min) (point-max)
835 nnml-nov-buffer-file-name nil
'nomesg
))
836 (set-buffer-modified-p nil
)
837 (kill-buffer (current-buffer)))
838 (setq nnml-nov-buffer-alist
(cdr nnml-nov-buffer-alist
)))))
841 (defun nnml-generate-nov-databases (&optional server
)
842 "Generate NOV databases in all nnml directories."
843 (interactive (list (or (nnoo-current-server 'nnml
) "")))
844 ;; Read the active file to make sure we don't re-use articles
845 ;; numbers in empty groups.
846 (nnmail-activate 'nnml
)
847 (unless (nnml-server-opened server
)
848 (nnml-open-server server
))
849 (setq nnml-directory
(expand-file-name nnml-directory
))
850 ;; Recurse down the directories.
851 (nnml-generate-nov-databases-directory nnml-directory nil t
)
852 ;; Save the active file.
853 (nnmail-save-active nnml-group-alist nnml-active-file
))
855 (defun nnml-generate-nov-databases-directory (dir &optional seen no-active
)
856 "Regenerate the NOV database in DIR.
858 Unless no-active is non-nil, update the active file too."
859 (interactive (list (let ((file-name-coding-system
860 nnmail-pathname-coding-system
))
861 (read-directory-name "Regenerate NOV in: "
862 nnml-directory nil t
))))
863 (setq dir
(file-name-as-directory dir
))
864 (let ((file-name-coding-system nnmail-pathname-coding-system
))
865 ;; Only scan this sub-tree if we haven't been here yet.
866 (unless (member (file-truename dir
) seen
)
867 (push (file-truename dir
) seen
)
868 ;; We descend recursively
869 (dolist (dir (directory-files dir t nil t
))
870 (when (and (not (string-match "^\\." (file-name-nondirectory dir
)))
871 (file-directory-p dir
))
872 (nnml-generate-nov-databases-directory dir seen
)))
873 ;; Do this directory.
874 (let ((files (sort (nnheader-article-to-file-alist dir
)
875 'car-less-than-car
)))
877 (let* ((group (nnheader-file-to-group
878 (directory-file-name dir
) nnml-directory
))
879 (info (cadr (assoc group nnml-group-alist
))))
881 (setcar info
(1+ (cdr info
)))))
882 (funcall nnml-generate-active-function dir
)
883 ;; Generate the nov file.
884 (nnml-generate-nov-file dir files
)
886 (nnmail-save-active nnml-group-alist nnml-active-file
)))))))
888 (eval-when-compile (defvar files
))
889 (defun nnml-generate-active-info (dir)
890 ;; Update the active info for this group.
891 (let ((group (directory-file-name dir
))
893 (setq group
(nnheader-file-to-group (nnml-encoded-group-name group
)
895 entry
(assoc group nnml-group-alist
)
896 last
(or (caadr entry
) 0)
897 nnml-group-alist
(delq entry nnml-group-alist
))
899 (cons (or (caar files
) (1+ last
))
901 (or (caar (last files
))
905 (defun nnml-generate-nov-file (dir files
)
906 (let* ((dir (file-name-as-directory dir
))
907 (nov (concat dir nnml-nov-file-name
))
908 (nov-buffer (get-buffer-create " *nov*"))
911 ;; Init the nov buffer.
912 (set-buffer nov-buffer
)
913 (buffer-disable-undo)
915 (set-buffer nntp-server-buffer
)
916 ;; Delete the old NOV file.
917 (when (file-exists-p nov
)
918 (funcall nnmail-delete-file-function nov
))
920 (unless (file-directory-p (setq file
(concat dir
(cdar files
))))
922 (nnheader-insert-file-contents file
)
924 (goto-char (point-min))
926 (re-search-forward "\n\r?\n" nil t
)
927 (setq chars
(- (point-max) (point)))
928 (max (point-min) (1- (point)))))
929 (unless (zerop (buffer-size))
930 (goto-char (point-min))
931 (setq headers
(nnml-parse-head chars
(caar files
)))
933 (set-buffer nov-buffer
)
934 (goto-char (point-max))
935 (nnheader-insert-nov headers
)))
937 (setq files
(cdr files
)))
939 (set-buffer nov-buffer
)
940 (nnmail-write-region (point-min) (point-max) nov nil
'nomesg
)
941 (kill-buffer (current-buffer))))))
943 (defun nnml-nov-delete-article (group article
)
945 (set-buffer (nnml-open-nov group
))
946 (when (nnheader-find-nov-line article
)
947 (delete-region (point) (progn (forward-line 1) (point)))
949 (let ((active (cadr (assoc group nnml-group-alist
)))
953 (setf (car active
) (1+ (cdr active
)))
954 (when (and (setq num
(ignore-errors (read (current-buffer))))
956 (setf (car active
) num
)))))))
959 (defun nnml-update-file-alist (&optional force
)
960 (when nnml-use-compressed-files
961 (when (or (not nnml-article-file-alist
)
963 (setq nnml-article-file-alist
964 (nnml-current-group-article-to-file-alist)))))
966 (defun nnml-directory-articles (dir)
967 "Return a list of all article files in a directory.
968 Use the nov database for that directory if available."
969 (if (or gnus-nov-is-evil nnml-nov-is-evil
971 (expand-file-name nnml-nov-file-name dir
))))
972 (nnheader-directory-articles dir
)
973 ;; build list from .overview if available
974 ;; We would use nnml-open-nov, except that nnml-nov-buffer-alist is
975 ;; defvoo'd, and we might get called when it hasn't been swapped in.
979 (buffer (nnml-get-nov-buffer nnml-current-group
)))
981 (goto-char (point-min))
983 (setq art
(read (current-buffer)))
988 (defun nnml-current-group-article-to-file-alist ()
989 "Return an alist of article/file pairs in the current group.
990 Use the nov database for the current group if available."
991 (if (or nnml-use-compressed-files
995 (expand-file-name nnml-nov-file-name
996 nnml-current-directory
))))
997 (nnheader-article-to-file-alist nnml-current-directory
)
998 ;; build list from .overview if available
1001 (buffer (nnml-get-nov-buffer nnml-current-group
))
1004 (goto-char (point-min))
1006 (setq art
(read (current-buffer)))
1007 ;; assume file name is unadorned (ie. not compressed etc)
1008 (push (cons art
(int-to-string art
)) alist
)
1012 (deffoo nnml-request-set-mark
(group actions
&optional server
)
1013 (nnml-possibly-change-directory group server
)
1014 (unless nnml-marks-is-evil
1015 (nnml-open-marks group server
)
1016 (dolist (action actions
)
1017 (let ((range (nth 0 action
))
1018 (what (nth 1 action
))
1019 (marks (nth 2 action
)))
1020 (assert (or (eq what
'add
) (eq what
'del
)) nil
1021 "Unknown request-set-mark action: %s" what
)
1022 (dolist (mark marks
)
1023 (setq nnml-marks
(gnus-update-alist-soft
1025 (funcall (if (eq what
'add
) 'gnus-range-add
1026 'gnus-remove-from-range
)
1027 (cdr (assoc mark nnml-marks
)) range
)
1029 (nnml-save-marks group server
))
1032 (deffoo nnml-request-update-info
(group info
&optional server
)
1033 (nnml-possibly-change-directory group server
)
1034 (when (and (not nnml-marks-is-evil
) (nnml-marks-changed-p group server
))
1035 (nnheader-message 8 "Updating marks for %s..." group
)
1036 (nnml-open-marks group server
)
1037 ;; Update info using `nnml-marks'.
1038 (mapc (lambda (pred)
1039 (unless (memq (cdr pred
) gnus-article-unpropagated-mark-lists
)
1040 (gnus-info-set-marks
1042 (gnus-update-alist-soft
1044 (cdr (assq (cdr pred
) nnml-marks
))
1045 (gnus-info-marks info
))
1047 gnus-article-mark-lists
)
1048 (let ((seen (cdr (assq 'read nnml-marks
))))
1049 (gnus-info-set-read info
1050 (if (and (integerp (car seen
))
1052 (list (cons (car seen
) (car seen
)))
1054 (nnheader-message 8 "Updating marks for %s...done" group
))
1057 (defun nnml-marks-changed-p (group server
)
1058 (let ((file (nnml-group-pathname group nnml-marks-file-name server
)))
1059 (if (null (gnus-gethash file nnml-marks-modtime
))
1060 t
;; never looked at marks file, assume it has changed
1061 (not (equal (gnus-gethash file nnml-marks-modtime
)
1062 (nth 5 (file-attributes file
)))))))
1064 (defun nnml-save-marks (group server
)
1065 (let ((file-name-coding-system nnmail-pathname-coding-system
)
1066 (file (nnml-group-pathname group nnml-marks-file-name server
)))
1069 (nnml-possibly-create-directory group server
)
1070 (with-temp-file file
1072 (gnus-prin1 nnml-marks
)
1075 (nth 5 (file-attributes file
))
1076 nnml-marks-modtime
))
1077 (error (or (gnus-yes-or-no-p
1078 (format "Could not write to %s (%s). Continue? " file err
))
1079 (error "Cannot write to %s (%s)" file err
))))))
1081 (defun nnml-open-marks (group server
)
1082 (let* ((decoded (nnml-decoded-group-name group server
))
1083 (file (nnmail-group-pathname decoded nnml-directory
1084 nnml-marks-file-name
))
1085 (file-name-coding-system nnmail-pathname-coding-system
))
1086 (if (file-exists-p file
)
1089 (gnus-sethash file
(nth 5 (file-attributes file
))
1091 (nnheader-insert-file-contents file
)
1092 (setq nnml-marks
(read (current-buffer)))
1093 (dolist (el gnus-article-unpropagated-mark-lists
)
1094 (setq nnml-marks
(gnus-remassoc el nnml-marks
))))
1095 (error (or (gnus-yes-or-no-p
1096 (format "Error reading nnml marks file %s (%s). Continuing will use marks from .newsrc.eld. Continue? " file err
))
1097 (error "Cannot read nnml marks file %s (%s)" file err
))))
1098 ;; User didn't have a .marks file. Probably first time
1099 ;; user of the .marks stuff. Bootstrap it from .newsrc.eld.
1100 (let ((info (gnus-get-info
1101 (gnus-group-prefixed-name
1103 (gnus-server-to-method
1104 (format "nnml:%s" (or server
"")))))))
1105 (setq decoded
(if (member server
'(nil ""))
1106 (concat "nnml:" decoded
)
1107 (format "nnml+%s:%s" server decoded
)))
1108 (nnheader-message 7 "Bootstrapping marks for %s..." decoded
)
1109 (setq nnml-marks
(gnus-info-marks info
))
1110 (push (cons 'read
(gnus-info-read info
)) nnml-marks
)
1111 (dolist (el gnus-article-unpropagated-mark-lists
)
1112 (setq nnml-marks
(gnus-remassoc el nnml-marks
)))
1113 (nnml-save-marks group server
)
1114 (nnheader-message 7 "Bootstrapping marks for %s...done" decoded
)))))
1118 ;;; Group and server compaction. -- dvl
1121 ;; #### FIXME: this function handles self Xref: entry correctly, but I don't
1122 ;; #### know how to handle external cross-references. I actually don't know if
1123 ;; #### this is handled correctly elsewhere. For instance, what happens if you
1124 ;; #### move all articles to a new group (that's what people do for manual
1125 ;; #### compaction) ?
1127 ;; #### NOTE: the function below handles the article backlog. This is
1128 ;; #### conceptually the wrong place to do it because the backend is at a
1129 ;; #### lower level. However, this is the only place where we have the needed
1130 ;; #### information to do the job. Ideally, this function should not handle
1131 ;; #### the backlog by itself, but return a list of moved groups / articles to
1132 ;; #### the caller. This will become important to avoid code duplication when
1133 ;; #### other backends get a compaction feature. Also, note that invalidating
1134 ;; #### the "original article buffer" is already done at an upper level.
1136 ;; Shouldn't `nnml-request-compact-group' be interactive? --rsteib
1138 (defun nnml-request-compact-group (group &optional server save
)
1139 (nnml-possibly-change-directory group server
)
1140 (unless nnml-article-file-alist
1141 (setq nnml-article-file-alist
1142 (sort (nnml-current-group-article-to-file-alist)
1143 'car-less-than-car
)))
1144 (if (not nnml-article-file-alist
)
1145 ;; The group is empty: do nothing but return t
1147 ;; The group is not empty:
1148 (let* ((group-full-name
1149 (gnus-group-prefixed-name
1151 (gnus-server-to-method (format "nnml:%s" server
))))
1152 (info (gnus-get-info group-full-name
))
1155 (let ((articles nnml-article-file-alist
)
1157 (while (setq article
(pop articles
))
1158 (let ((old-number (car article
)))
1159 (when (> old-number new-number
)
1160 ;; There is a gap here:
1161 (let ((old-number-string (int-to-string old-number
))
1162 (new-number-string (int-to-string new-number
)))
1164 ;; #### NOTE: `nnml-article-to-file' calls
1165 ;; #### `nnml-update-file-alist' (which in turn calls
1166 ;; #### `nnml-current-group-article-to-file-alist', which
1167 ;; #### might use the NOV database). This might turn out to be
1168 ;; #### inefficient. In that case, we will do the work
1170 ;; 1/ Move the article to a new file:
1171 (let* ((oldfile (nnml-article-to-file old-number
))
1173 (gnus-replace-in-string
1175 ;; nnml-use-compressed-files might be any string, but
1176 ;; probably it's sufficient to take into account only
1177 ;; "\\.[a-z0-9]+". Note that we can't only use the
1178 ;; value of nnml-use-compressed-files because old
1179 ;; articles might have been saved with a different
1182 "\\(" old-number-string
"\\)\\(\\(\\.[a-z0-9]+\\)?\\)$")
1183 (concat new-number-string
"\\2"))))
1184 (with-current-buffer nntp-server-buffer
1185 (nnmail-find-file oldfile
)
1186 ;; Update the Xref header in the article itself:
1187 (when (and (re-search-forward "^Xref: [^ ]+ " nil t
)
1191 (concat group
":" old-number-string
))
1195 (concat group
":" new-number-string
)))
1196 ;; Save to the new file:
1197 (nnmail-write-region (point-min) (point-max) newfile
))
1198 (funcall nnmail-delete-file-function oldfile
))
1199 ;; 2/ Update all marks for this article:
1200 ;; #### NOTE: it is possible that the new article number
1201 ;; #### already belongs to a range, whereas the corresponding
1202 ;; #### article doesn't exist (for example, if you delete an
1203 ;; #### article). For that reason, it is important to update
1204 ;; #### the ranges (meaning remove inexistant articles) before
1205 ;; #### doing anything on them.
1206 ;; 2 a/ read articles:
1207 (let ((read (gnus-info-read info
)))
1208 (setq read
(gnus-remove-from-range read
(list new-number
)))
1209 (when (gnus-member-of-range old-number read
)
1210 (setq read
(gnus-remove-from-range read
(list old-number
)))
1211 (setq read
(gnus-add-to-range read
(list new-number
))))
1212 (gnus-info-set-read info read
))
1213 ;; 2 b/ marked articles:
1214 (let ((oldmarks (gnus-info-marks info
))
1216 (while (setq mark
(pop oldmarks
))
1217 (setcdr mark
(gnus-remove-from-range (cdr mark
)
1219 (when (gnus-member-of-range old-number
(cdr mark
))
1220 (setcdr mark
(gnus-remove-from-range (cdr mark
)
1222 (setcdr mark
(gnus-add-to-range (cdr mark
)
1223 (list new-number
))))
1224 (push mark newmarks
))
1225 (gnus-info-set-marks info newmarks
))
1226 ;; 3/ Update the NOV entry for this article:
1227 (unless nnml-nov-is-evil
1229 (set-buffer (nnml-open-nov group
))
1230 (when (nnheader-find-nov-line old-number
)
1231 ;; Replace the article number:
1232 (looking-at old-number-string
)
1233 (replace-match new-number-string nil t
)
1234 ;; Update the Xref header:
1235 (when (re-search-forward
1236 (concat "\\(Xref:[^\t\n]* \\)\\<"
1238 (concat group
":" old-number-string
))
1242 (concat "\\1" group
":" new-number-string
))))))
1243 ;; 4/ Possibly remove the article from the backlog:
1244 (when gnus-keep-backlog
1245 ;; #### NOTE: instead of removing the article, we could
1246 ;; #### modify the backlog to reflect the numbering change,
1247 ;; #### but I don't think it's worth it.
1248 (gnus-backlog-remove-article group-full-name old-number
)
1249 (gnus-backlog-remove-article group-full-name new-number
))))
1250 (setq new-number
(1+ new-number
)))))
1252 ;; No compaction had to be done:
1254 ;; Some articles have actually been renamed:
1255 ;; 1/ Rebuild active information:
1256 (let ((entry (assoc group nnml-group-alist
))
1257 (active (cons 1 (1- new-number
))))
1258 (setq nnml-group-alist
(delq entry nnml-group-alist
))
1259 (push (list group active
) nnml-group-alist
)
1260 ;; Update the active hashtable to let the *Group* buffer display
1261 ;; up-to-date lines. I don't think that either gnus-newsrc-hashtb or
1262 ;; gnus-newwrc-alist are out of date, since all we did is to modify
1263 ;; the info of the group internally.
1264 (gnus-set-active group-full-name active
))
1266 ;; #### NOTE: normally, we should save the overview (NOV) file
1267 ;; #### here, just like we save the marks file. However, there is no
1268 ;; #### such function as nnml-save-nov for a single group. Only for
1269 ;; #### all groups. Gnus inconsistency is getting worse every day...
1270 ;; 2/ Rebuild marks file:
1271 (unless nnml-marks-is-evil
1272 ;; #### NOTE: this constant use of global variables everywhere is
1273 ;; #### truly disgusting. Gnus really needs a *major* cleanup.
1274 (setq nnml-marks
(gnus-info-marks info
))
1275 (push (cons 'read
(gnus-info-read info
)) nnml-marks
)
1276 (dolist (el gnus-article-unpropagated-mark-lists
)
1277 (setq nnml-marks
(gnus-remassoc el nnml-marks
)))
1278 (nnml-save-marks group server
))
1279 ;; 3/ Save everything if this was not part of a bigger operation:
1281 ;; Nothing to save (yet):
1283 ;; Something to save:
1284 ;; a/ Save the NOV databases:
1285 ;; #### NOTE: this should be done directory per directory in 1bis
1286 ;; #### above. See comment there.
1288 ;; b/ Save the active file:
1289 (nnmail-save-active nnml-group-alist nnml-active-file
)
1292 (defun nnml-request-compact (&optional server
)
1293 "Request compaction of all SERVER nnml groups."
1294 (interactive (list (or (nnoo-current-server 'nnml
) "")))
1295 (nnmail-activate 'nnml
)
1296 (unless (nnml-server-opened server
)
1297 (nnml-open-server server
))
1298 (setq nnml-directory
(expand-file-name nnml-directory
))
1299 (let* ((groups (gnus-groups-from-server
1300 (gnus-server-to-method (format "nnml:%s" server
))))
1301 (first (pop groups
))
1304 (while (setq group
(pop groups
))
1305 (nnml-request-compact-group (gnus-group-real-name group
) server
))
1306 (nnml-request-compact-group (gnus-group-real-name first
) server t
))))
1311 ;;; arch-tag: 52c97dc3-9735-45de-b439-9e4d23b52004
1312 ;;; nnml.el ends here