1 ;;; gnus-registry.el --- article registry for Gnus
3 ;; Copyright (C) 2002-2013 Free Software Foundation, Inc.
5 ;; Author: Ted Zlatanov <tzz@lifelogs.com>
6 ;; Keywords: news registry
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is free software: you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation, either version 3 of the License, or
13 ;; (at your option) any later version.
15 ;; GNU Emacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
25 ;; This is the gnus-registry.el package, which works with all
26 ;; Gnus backends, not just nnmail. The major issue is that it
27 ;; doesn't go across backends, so for instance if an article is in
28 ;; nnml:sys and you see a reference to it in nnimap splitting, the
29 ;; article will end up in nnimap:sys
31 ;; gnus-registry.el intercepts article respooling, moving, deleting,
32 ;; and copying for all backends. If it doesn't work correctly for
33 ;; you, submit a bug report and I'll be glad to fix it. It needs
34 ;; better documentation in the manual (also on my to-do list).
36 ;; If you want to track recipients (and you should to make the
37 ;; gnus-registry splitting work better), you need the To and Cc
38 ;; headers collected by Gnus. Note that in more recent Gnus versions
39 ;; this is already the case: look at `gnus-extra-headers' to be sure.
41 ;; ;;; you may also want Gcc Newsgroups Keywords X-Face
42 ;; (add-to-list 'gnus-extra-headers 'To)
43 ;; (add-to-list 'gnus-extra-headers 'Cc)
44 ;; (setq nnmail-extra-headers gnus-extra-headers)
46 ;; Put this in your startup file (~/.gnus.el for instance) or use Customize:
48 ;; (setq gnus-registry-max-entries 2500
49 ;; gnus-registry-track-extra '(sender subject recipient))
51 ;; (gnus-registry-initialize)
53 ;; Then use this in your fancy-split:
55 ;; (: gnus-registry-split-fancy-with-parent)
57 ;; You should also consider using the nnregistry backend to look up
58 ;; articles. See the Gnus manual for more information.
60 ;; Finally, you can put %uM in your summary line format to show the
61 ;; registry marks if you do this:
63 ;; show the marks as single characters (see the :char property in
64 ;; `gnus-registry-marks'):
65 ;; (defalias 'gnus-user-format-function-M 'gnus-registry-article-marks-to-chars)
67 ;; show the marks by name (see `gnus-registry-marks'):
68 ;; (defalias 'gnus-user-format-function-M 'gnus-registry-article-marks-to-names)
72 ;; - get the correct group on spool actions
74 ;; - articles that are spooled to a different backend should be moved
79 (eval-when-compile (require 'cl))
90 (defvar gnus-adaptive-word-syntax-table)
92 (defvar gnus-registry-dirty t
93 "Boolean set to t when the registry is modified.")
95 (defgroup gnus-registry nil
100 (defvar gnus-registry-marks
103 :image "summary_important")
106 :image "summary_work")
109 :image "summary_personal")
112 :image "summary_todo")
115 :image "summary_later"))
117 "List of registry marks and their options.
119 `gnus-registry-mark-article' will offer symbols from this list
122 Each entry must have a character to be useful for summary mode
123 line display and for keyboard shortcuts.
125 Each entry must have an image string to be useful for visual
128 (defcustom gnus-registry-default-mark 'To-Do
129 "The default mark. Should be a valid key for `gnus-registry-marks'."
130 :group 'gnus-registry
133 (defcustom gnus-registry-unfollowed-addresses
134 (list (regexp-quote user-mail-address))
135 "List of addresses that gnus-registry-split-fancy-with-parent won't trace.
136 The addresses are matched, they don't have to be fully qualified.
137 In the messages, these addresses can be the sender or the
140 :group 'gnus-registry
141 :type '(repeat regexp))
143 (defcustom gnus-registry-unfollowed-groups
144 '("delayed$" "drafts$" "queue$" "INBOX$" "^nnmairix:" "archive")
145 "List of groups that gnus-registry-split-fancy-with-parent won't return.
146 The group names are matched, they don't have to be fully
147 qualified. This parameter tells the Gnus registry 'never split a
148 message into a group that matches one of these, regardless of
151 nnmairix groups are specifically excluded because they are ephemeral."
152 :group 'gnus-registry
153 :type '(repeat regexp))
155 (defcustom gnus-registry-install 'ask
156 "Whether the registry should be installed."
157 :group 'gnus-registry
158 :type '(choice (const :tag "Never Install" nil)
159 (const :tag "Always Install" t)
160 (const :tag "Ask Me" ask)))
162 (defvar gnus-registry-enabled nil)
164 (defvar gnus-summary-misc-menu) ;; Avoid byte compiler warning.
166 (defvar gnus-registry-misc-menus nil) ; ugly way to keep the menus
168 (make-obsolete-variable 'gnus-registry-clean-empty nil "23.4")
169 (make-obsolete-variable 'gnus-registry-use-long-group-names nil "23.4")
170 (make-obsolete-variable 'gnus-registry-max-track-groups nil "23.4")
171 (make-obsolete-variable 'gnus-registry-entry-caching nil "23.4")
172 (make-obsolete-variable 'gnus-registry-trim-articles-without-groups nil "23.4")
174 (defcustom gnus-registry-track-extra '(subject sender recipient)
175 "Whether the registry should track extra data about a message.
176 The subject, recipients (To: and Cc:), and Sender (From:) headers
177 are tracked this way by default."
178 :group 'gnus-registry
180 '(set :tag "Tracking choices"
181 (const :tag "Track by subject (Subject: header)" subject)
182 (const :tag "Track by recipient (To: and Cc: headers)" recipient)
183 (const :tag "Track by sender (From: header)" sender)))
185 (defcustom gnus-registry-split-strategy nil
186 "The splitting strategy applied to the keys in `gnus-registry-track-extra'.
188 Given a set of unique found groups G and counts for each element
189 of G, and a key K (typically 'sender or 'subject):
191 When nil, if G has only one element, use it. Otherwise give up.
192 This is the fastest but also least useful strategy.
194 When 'majority, use the majority by count. So if there is a
195 group with the most articles counted by K, use that. Ties are
196 resolved in no particular order, simply the first one found wins.
197 This is the slowest strategy but also the most accurate one.
199 When 'first, the first element of G wins. This is fast and
200 should be OK if your senders and subjects don't \"bleed\" across
202 :group 'gnus-registry
204 '(choice :tag "Splitting strategy"
205 (const :tag "Only use single choices, discard multiple matches" nil)
206 (const :tag "Majority of matches wins" majority)
207 (const :tag "First found wins" first)))
209 (defcustom gnus-registry-minimum-subject-length 5
210 "The minimum length of a subject before it's considered trackable."
211 :group 'gnus-registry
214 (defcustom gnus-registry-extra-entries-precious '(mark)
215 "What extra keys are precious, meaning entries with them won't get pruned.
216 By default, 'mark is included, so articles with marks are
219 Before you save the Gnus registry, it's pruned. Any entries with
220 keys in this list will not be pruned. All other entries go to
222 :group 'gnus-registry
223 :type '(repeat symbol))
225 (defcustom gnus-registry-cache-file
227 (or gnus-dribble-directory gnus-home-directory "~/")
228 ".gnus.registry.eioio")
229 "File where the Gnus registry will be stored."
230 :group 'gnus-registry
233 (defcustom gnus-registry-max-entries nil
234 "Maximum number of entries in the registry, nil for unlimited."
235 :group 'gnus-registry
236 :type '(radio (const :format "Unlimited " nil)
237 (integer :format "Maximum number: %v")))
239 (defcustom gnus-registry-max-pruned-entries nil
240 "Maximum number of pruned entries in the registry, nil for unlimited."
242 :group 'gnus-registry
243 :type '(radio (const :format "Unlimited " nil)
244 (integer :format "Maximum number: %v")))
246 (defun gnus-registry-fixup-registry (db)
248 (let ((old (oref db :tracked)))
250 (append gnus-registry-extra-entries-precious
253 (or gnus-registry-max-entries
254 most-positive-fixnum))
255 (oset db :prune-factor
258 (or gnus-registry-max-pruned-entries
259 most-positive-fixnum))
261 (append gnus-registry-track-extra
262 '(mark group keyword)))
263 (when (not (equal old (oref db :tracked)))
264 (gnus-message 9 "Reindexing the Gnus registry (tracked change)")
265 (registry-reindex db))))
268 (defun gnus-registry-make-db (&optional file)
269 (interactive "fGnus registry persistence file: \n")
270 (gnus-registry-fixup-registry
273 :file (or file gnus-registry-cache-file)
274 ;; these parameters are set in `gnus-registry-fixup-registry'
275 :max-hard most-positive-fixnum
276 :max-soft most-positive-fixnum
280 (defvar gnus-registry-db (gnus-registry-make-db)
281 "The article registry by Message ID. See `registry-db'.")
283 ;; top-level registry data management
284 (defun gnus-registry-remake-db (&optional forsure)
285 "Remake the registry database after customization.
286 This is not required after changing `gnus-registry-cache-file'."
287 (interactive (list (y-or-n-p "Remake and CLEAR the Gnus registry? ")))
289 (gnus-message 4 "Remaking the Gnus registry")
290 (setq gnus-registry-db (gnus-registry-make-db))))
292 (defun gnus-registry-read ()
293 "Read the registry cache file."
295 (let ((file gnus-registry-cache-file))
298 (gnus-message 5 "Reading Gnus registry from %s..." file)
299 (setq gnus-registry-db
300 (gnus-registry-fixup-registry
302 (eieio-persistent-read file 'registry-db)
303 ;; Older EIEIO versions do not check the class name.
304 ('wrong-number-of-arguments
305 (eieio-persistent-read file)))))
306 (gnus-message 5 "Reading Gnus registry from %s...done" file))
310 "The Gnus registry could not be loaded from %s, creating a new one"
312 (gnus-registry-remake-db t)))))
314 (defun gnus-registry-save (&optional file db)
315 "Save the registry cache file."
317 (let ((file (or file gnus-registry-cache-file))
318 (db (or db gnus-registry-db)))
319 (gnus-message 5 "Saving Gnus registry (%d entries) to %s..."
320 (registry-size db) file)
322 ;; TODO: call (gnus-string-remove-all-properties v) on all elements?
323 (eieio-persistent-save db file)
324 (gnus-message 5 "Saving Gnus registry (size %d) to %s...done"
325 (registry-size db) file)))
327 (defun gnus-registry-remove-ignored ()
329 (let* ((db gnus-registry-db)
330 (grouphashtb (registry-lookup-secondary db 'group))
331 (old-size (registry-size db)))
332 (registry-reindex db)
333 (loop for k being the hash-keys of grouphashtb
334 using (hash-values v)
335 when (gnus-registry-ignore-group-p k)
336 do (registry-delete db v nil))
337 (registry-reindex db)
338 (gnus-message 4 "Removed %d ignored entries from the Gnus registry"
339 (- old-size (registry-size db)))))
341 ;; article move/copy/spool/delete actions
342 (defun gnus-registry-action (action data-header from &optional to method)
343 (let* ((id (mail-header-id data-header))
344 (subject (mail-header-subject data-header))
345 (extra (mail-header-extra data-header))
346 (recipients (gnus-registry-sort-addresses
347 (or (cdr-safe (assq 'Cc extra)) "")
348 (or (cdr-safe (assq 'To extra)) "")))
349 (sender (nth 0 (gnus-registry-extract-addresses
350 (mail-header-from data-header))))
351 (from (gnus-group-guess-full-name-from-command-method from))
352 (to (if to (gnus-group-guess-full-name-from-command-method to) nil))
353 (to-name (if to to "the Bit Bucket")))
354 (gnus-message 7 "Gnus registry: article %s %s from %s to %s"
355 id (if method "respooling" "going") from to)
357 (gnus-registry-handle-action
359 ;; unless copying, remove the old "from" group
360 (if (not (equal 'copy action)) from nil)
361 to subject sender recipients)))
363 (defun gnus-registry-spool-action (id group &optional subject sender recipients)
364 (let ((to (gnus-group-guess-full-name-from-command-method group))
365 (recipients (or recipients
366 (gnus-registry-sort-addresses
367 (or (message-fetch-field "cc") "")
368 (or (message-fetch-field "to") ""))))
369 (subject (or subject (message-fetch-field "subject")))
370 (sender (or sender (message-fetch-field "from"))))
371 (when (and (stringp id) (string-match "\r$" id))
372 (setq id (substring id 0 -1)))
373 (gnus-message 7 "Gnus registry: article %s spooled to %s"
376 (gnus-registry-handle-action id nil to subject sender recipients)))
378 (defun gnus-registry-handle-action (id from to subject sender
379 &optional recipients)
382 "gnus-registry-handle-action %S" (list id from to subject sender recipients))
383 (let ((db gnus-registry-db)
384 ;; if the group is ignored, set the destination to nil (same as delete)
385 (to (if (gnus-registry-ignore-group-p to) nil to))
387 (entry (gnus-registry-get-or-make-entry id))
388 (subject (gnus-string-remove-all-properties
389 (gnus-registry-simplify-subject subject)))
390 (sender (gnus-string-remove-all-properties sender)))
392 ;; this could be done by calling `gnus-registry-set-id-key'
393 ;; several times but it's better to bunch the transactions
396 (registry-delete db (list id) nil)
398 (setq entry (cons (delete from (assoc 'group entry))
399 (assq-delete-all 'group entry))))
401 (dolist (kv `((group ,to)
403 (recipient ,@recipients)
406 (let ((new (or (assq (first kv) entry)
408 (dolist (toadd (cdr kv))
409 (add-to-list 'new toadd t))
410 (setq entry (cons new
411 (assq-delete-all (first kv) entry))))))
412 (gnus-message 10 "Gnus registry: new entry for %s is %S"
415 (gnus-registry-insert db id entry)))
417 ;; Function for nn{mail|imap}-split-fancy: look up all references in
418 ;; the cache and if a match is found, return that group.
419 (defun gnus-registry-split-fancy-with-parent ()
420 "Split this message into the same group as its parent.
421 The parent is obtained from the registry. This function can be used as an
422 entry in `nnmail-split-fancy' or `nnimap-split-fancy', for example like
423 this: (: gnus-registry-split-fancy-with-parent)
425 This function tracks ALL backends, unlike
426 `nnmail-split-fancy-with-parent' which tracks only nnmail
429 For a message to be split, it looks for the parent message in the
430 References or In-Reply-To header and then looks in the registry
431 to see which group that message was put in. This group is
432 returned, unless `gnus-registry-follow-group-p' return nil for
435 See the Info node `(gnus)Fancy Mail Splitting' for more details."
436 (let* ((refstr (or (message-fetch-field "references") "")) ; guaranteed
437 (reply-to (message-fetch-field "in-reply-to")) ; may be nil
438 ;; now, if reply-to is valid, append it to the References
440 (concat refstr " " reply-to)
442 (references (and refstr (gnus-extract-references refstr)))
443 ;; these may not be used, but the code is cleaner having them up here
444 (sender (gnus-string-remove-all-properties
445 (message-fetch-field "from")))
446 (recipients (gnus-registry-sort-addresses
447 (or (message-fetch-field "cc") "")
448 (or (message-fetch-field "to") "")))
449 (subject (gnus-string-remove-all-properties
450 (gnus-registry-simplify-subject
451 (message-fetch-field "subject"))))
453 (nnmail-split-fancy-with-parent-ignore-groups
454 (if (listp nnmail-split-fancy-with-parent-ignore-groups)
455 nnmail-split-fancy-with-parent-ignore-groups
456 (list nnmail-split-fancy-with-parent-ignore-groups))))
457 (gnus-registry--split-fancy-with-parent-internal
458 :references references
461 :recipients recipients
463 :log-agent "Gnus registry fancy splitting with parent")))
465 (defun* gnus-registry--split-fancy-with-parent-internal
467 &key references refstr sender subject recipients log-agent
471 "gnus-registry--split-fancy-with-parent-internal %S" spec)
472 (let ((db gnus-registry-db)
474 ;; this is a big chain of statements. it uses
475 ;; gnus-registry-post-process-groups to filter the results after
477 ;; the references string must be valid and parse to valid references
481 "%s is tracing references %s"
483 (dolist (reference (nreverse references))
484 (gnus-message 9 "%s is looking up %s" log-agent reference)
485 (loop for group in (gnus-registry-get-id-key reference 'group)
486 when (gnus-registry-follow-group-p group)
489 (gnus-message 7 "%s traced %s to %s" log-agent reference group)
490 (push group found))))
491 ;; filter the found groups and return them
492 ;; the found groups are the full groups
493 (setq found (gnus-registry-post-process-groups
494 "references" refstr found)))
496 ;; else: there were no matches, now try the extra tracking by subject
497 (when (and (null found)
498 (memq 'subject gnus-registry-track-extra)
500 (< gnus-registry-minimum-subject-length (length subject)))
505 (gnus-registry-get-id-key reference 'group))
506 (registry-lookup-secondary-value db 'subject subject)))))
508 (loop for group in groups
509 when (gnus-registry-follow-group-p group)
511 ;; warn more if gnus-registry-track-extra
512 (if gnus-registry-track-extra 7 9)
513 "%s (extra tracking) traced subject '%s' to %s"
514 log-agent subject group)
516 ;; filter the found groups and return them
517 ;; the found groups are NOT the full groups
518 (setq found (gnus-registry-post-process-groups
519 "subject" subject found))))
521 ;; else: there were no matches, try the extra tracking by sender
522 (when (and (null found)
523 (memq 'sender gnus-registry-track-extra)
525 (not (gnus-grep-in-list
527 gnus-registry-unfollowed-addresses)))
532 (gnus-registry-get-id-key reference 'group))
533 (registry-lookup-secondary-value db 'sender sender)))))
535 (loop for group in groups
536 when (gnus-registry-follow-group-p group)
538 ;; warn more if gnus-registry-track-extra
539 (if gnus-registry-track-extra 7 9)
540 "%s (extra tracking) traced sender '%s' to %s"
541 log-agent sender group)
544 ;; filter the found groups and return them
545 ;; the found groups are NOT the full groups
546 (setq found (gnus-registry-post-process-groups
547 "sender" sender found)))
549 ;; else: there were no matches, try the extra tracking by recipient
550 (when (and (null found)
551 (memq 'recipient gnus-registry-track-extra)
553 (dolist (recp recipients)
554 (when (and (null found)
555 (not (gnus-grep-in-list
557 gnus-registry-unfollowed-addresses)))
558 (let ((groups (apply 'append
561 (gnus-registry-get-id-key reference 'group))
562 (registry-lookup-secondary-value
563 db 'recipient recp)))))
565 (loop for group in groups
566 when (gnus-registry-follow-group-p group)
568 ;; warn more if gnus-registry-track-extra
569 (if gnus-registry-track-extra 7 9)
570 "%s (extra tracking) traced recipient '%s' to %s"
571 log-agent recp group)
572 and collect group)))))
574 ;; filter the found groups and return them
575 ;; the found groups are NOT the full groups
576 (setq found (gnus-registry-post-process-groups
577 "recipients" (mapconcat 'identity recipients ", ") found)))
579 ;; after the (cond) we extract the actual value safely
582 (defun gnus-registry-post-process-groups (mode key groups)
583 "Inspects GROUPS found by MODE for KEY to determine which ones to follow.
585 MODE can be 'subject' or 'sender' for example. The KEY is the
586 value by which MODE was searched.
588 Transforms each group name to the equivalent short name.
590 Checks if the current Gnus method (from `gnus-command-method' or
591 from `gnus-newsgroup-name') is the same as the group's method.
592 Foreign methods are not supported so they are rejected.
594 Reduces the list to a single group, or complains if that's not
595 possible. Uses `gnus-registry-split-strategy'."
596 (let ((log-agent "gnus-registry-post-process-group")
597 (desc (format "%d groups" (length groups)))
599 ;; the strategy can be nil, in which case chosen is nil
601 (case gnus-registry-split-strategy
602 ;; default, take only one-element lists into chosen
604 (and (= (length groups) 1)
611 (let ((freq (make-hash-table
614 (mapc (lambda (x) (let ((x (gnus-group-short-name x)))
615 (puthash x (1+ (gethash x freq 0)) freq)))
617 (setq desc (format "%d groups, %d unique"
619 (hash-table-count freq)))
623 (> (gethash (gnus-group-short-name a) freq 0)
624 (gethash (gnus-group-short-name b) freq 0)))))))))
629 "%s: strategy %s on %s produced %s"
630 log-agent gnus-registry-split-strategy desc chosen)
633 "%s: strategy %s on %s did not produce an answer"
635 (or gnus-registry-split-strategy "default")
638 (setq groups (and chosen (list chosen)))
640 (dolist (group groups)
641 (let ((m1 (gnus-find-method-for-group group))
642 (m2 (or gnus-command-method
643 (gnus-find-method-for-group gnus-newsgroup-name)))
644 (short-name (gnus-group-short-name group)))
645 (if (gnus-methods-equal-p m1 m2)
647 ;; this is REALLY just for debugging
648 (when (not (equal group short-name))
651 "%s: stripped group %s to %s"
652 log-agent group short-name))
653 (add-to-list 'out short-name))
657 "%s: ignored foreign group %s"
660 (setq out (delq nil out))
663 ((= (length out) 1) out)
667 "%s: no matches for %s '%s'."
672 "%s: too many extra matches (%s) for %s '%s'. Returning none."
673 log-agent out mode key)
676 (defun gnus-registry-follow-group-p (group)
677 "Determines if a group name should be followed.
678 Consults `gnus-registry-unfollowed-groups' and
679 `nnmail-split-fancy-with-parent-ignore-groups'."
681 (not (or (gnus-grep-in-list
683 gnus-registry-unfollowed-groups)
686 nnmail-split-fancy-with-parent-ignore-groups)))))
688 ;; note that gnus-registry-ignored-groups is defined in gnus.el as a
689 ;; group/topic parameter and an associated variable!
691 ;; we do special logic for ignoring to accept regular expressions and
692 ;; nnmail-split-fancy-with-parent-ignore-groups as well
693 (defun gnus-registry-ignore-group-p (group)
694 "Determines if a group name should be ignored.
695 Consults `gnus-registry-ignored-groups' and
696 `nnmail-split-fancy-with-parent-ignore-groups'."
698 (or (gnus-grep-in-list
700 (delq nil (mapcar (lambda (g)
703 ((and (listp g) (nth 1 g))
705 (t nil))) gnus-registry-ignored-groups)))
706 ;; only use `gnus-parameter-registry-ignore' if
707 ;; `gnus-registry-ignored-groups' is a list of lists
708 ;; (it can be a list of regexes)
709 (and (listp (nth 0 gnus-registry-ignored-groups))
710 (get-buffer "*Group*") ; in automatic tests this is false
711 (gnus-parameter-registry-ignore group))
714 nnmail-split-fancy-with-parent-ignore-groups))))
716 (defun gnus-registry-wash-for-keywords (&optional force)
717 "Get the keywords of the current article.
718 Overrides existing keywords with FORCE set non-nil."
720 (let ((id (gnus-registry-fetch-message-id-fast gnus-current-article))
722 (if (or (not (gnus-registry-get-id-key id 'keyword))
724 (with-current-buffer gnus-article-buffer
726 (save-window-excursion
728 (narrow-to-region (point) (point-max))
729 (with-syntax-table gnus-adaptive-word-syntax-table
730 (while (re-search-forward "\\b\\w+\\b" nil t)
731 (setq word (gnus-string-remove-all-properties
732 (downcase (buffer-substring
733 (match-beginning 0) (match-end 0)))))
734 (if (> (length word) 2)
735 (push word words))))))
736 (gnus-registry-set-id-key id 'keyword words)))))
738 (defun gnus-registry-keywords ()
739 (let ((table (registry-lookup-secondary gnus-registry-db 'keyword)))
740 (when table (maphash (lambda (k v) k) table))))
742 (defun gnus-registry-find-keywords (keyword)
744 (completing-read "Keyword: " (gnus-registry-keywords) nil t)))
745 (registry-lookup-secondary-value gnus-registry-db 'keyword keyword))
747 (defun gnus-registry-register-message-ids ()
748 "Register the Message-ID of every article in the group."
749 (unless (gnus-parameter-registry-ignore gnus-newsgroup-name)
750 (dolist (article gnus-newsgroup-articles)
751 (let* ((id (gnus-registry-fetch-message-id-fast article))
752 (groups (gnus-registry-get-id-key id 'group)))
753 (unless (member gnus-newsgroup-name groups)
754 (gnus-message 9 "Registry: Registering article %d with group %s"
755 article gnus-newsgroup-name)
756 (gnus-registry-handle-action id nil gnus-newsgroup-name
757 (gnus-registry-fetch-simplified-message-subject-fast article)
758 (gnus-registry-fetch-sender-fast article)
759 (gnus-registry-fetch-recipients-fast article)))))))
761 ;; message field fetchers
762 (defun gnus-registry-fetch-message-id-fast (article)
763 "Fetch the Message-ID quickly, using the internal gnus-data-list function."
764 (if (and (numberp article)
765 (assoc article (gnus-data-list nil)))
766 (mail-header-id (gnus-data-header (assoc article (gnus-data-list nil))))
769 (defun gnus-registry-extract-addresses (text)
770 "Extract all the addresses in a normalized way from TEXT.
771 Returns an unsorted list of strings in the name <address> format.
772 Addresses without a name will say \"noname\"."
773 (mapcar (lambda (add)
774 (gnus-string-remove-all-properties
775 (let* ((name (or (nth 0 add) "noname"))
777 (addr (if (bufferp addr)
778 (with-current-buffer addr
781 (format "%s <%s>" name addr))))
782 (mail-extract-address-components text t)))
784 (defun gnus-registry-sort-addresses (&rest addresses)
785 "Return a normalized and sorted list of ADDRESSES."
786 (sort (apply 'nconc (mapcar 'gnus-registry-extract-addresses addresses))
789 (defun gnus-registry-simplify-subject (subject)
790 (if (stringp subject)
791 (gnus-simplify-subject subject)
794 (defun gnus-registry-fetch-simplified-message-subject-fast (article)
795 "Fetch the Subject quickly, using the internal gnus-data-list function."
796 (if (and (numberp article)
797 (assoc article (gnus-data-list nil)))
798 (gnus-string-remove-all-properties
799 (gnus-registry-simplify-subject
800 (mail-header-subject (gnus-data-header
801 (assoc article (gnus-data-list nil))))))
804 (defun gnus-registry-fetch-sender-fast (article)
805 (gnus-registry-fetch-header-fast "from" article))
807 (defun gnus-registry-fetch-recipients-fast (article)
808 (gnus-registry-sort-addresses
809 (or (ignore-errors (gnus-registry-fetch-header-fast "Cc" article)) "")
810 (or (ignore-errors (gnus-registry-fetch-header-fast "To" article)) "")))
812 (defun gnus-registry-fetch-header-fast (article header)
813 "Fetch the HEADER quickly, using the internal gnus-data-list function."
814 (if (and (numberp article)
815 (assoc article (gnus-data-list nil)))
816 (gnus-string-remove-all-properties
817 (cdr (assq header (gnus-data-header
818 (assoc article (gnus-data-list nil))))))
821 ;; registry marks glue
822 (defun gnus-registry-do-marks (type function)
823 "For each known mark, call FUNCTION for each cell of type TYPE.
825 FUNCTION should take two parameters, a mark symbol and the cell value."
826 (dolist (mark-info gnus-registry-marks)
827 (let* ((mark (car-safe mark-info))
828 (data (cdr-safe mark-info))
829 (cell-data (plist-get data type)))
831 (funcall function mark cell-data)))))
833 ;; FIXME: Why not merge gnus-registry--set/remove-mark and
834 ;; gnus-registry-set-article-mark-internal?
835 (defun gnus-registry--set/remove-mark (remove mark articles)
836 "Set/remove the MARK over process-marked ARTICLES."
837 ;; If this is called and the user doesn't want the
838 ;; registry enabled, we'll ask anyhow.
839 (unless gnus-registry-install
840 (let ((gnus-registry-install 'ask))
841 (gnus-registry-install-p)))
843 ;; Now the user is asked if gnus-registry-install is `ask'.
844 (when (gnus-registry-install-p)
845 (gnus-registry-set-article-mark-internal
846 ;; All this just to get the mark, I must be doing it wrong.
847 mark articles remove t)
848 ;; FIXME: Why do we do the above only here and not directly inside
849 ;; gnus-registry-set-article-mark-internal? I.e. we wouldn't we want to do
850 ;; the things below when gnus-registry-set-article-mark-internal is called
851 ;; from gnus-registry-set-article-mark or
852 ;; gnus-registry-remove-article-mark?
853 (gnus-message 9 "Applying mark %s to %d articles"
854 mark (length articles))
855 (dolist (article articles)
856 (gnus-summary-update-article
858 (assoc article (gnus-data-list nil))))))
860 ;; This is ugly code, but I don't know how to do it better.
861 (defun gnus-registry-install-shortcuts ()
862 "Install the keyboard shortcuts and menus for the registry.
863 Uses `gnus-registry-marks' to find what shortcuts to install."
865 (setq gnus-registry-misc-menus nil)
866 (gnus-registry-do-marks
869 (let ((function-format
870 (format "gnus-registry-%%s-article-%s-mark" mark)))
872 ;;; The following generates these functions:
873 ;;; (defun gnus-registry-set-article-Important-mark (&rest articles)
874 ;;; "Apply the Important mark to process-marked ARTICLES."
875 ;;; (interactive (gnus-summary-work-articles current-prefix-arg))
876 ;;; (gnus-registry-set-article-mark-internal 'Important articles nil t))
877 ;;; (defun gnus-registry-remove-article-Important-mark (&rest articles)
878 ;;; "Apply the Important mark to process-marked ARTICLES."
879 ;;; (interactive (gnus-summary-work-articles current-prefix-arg))
880 ;;; (gnus-registry-set-article-mark-internal 'Important articles t t))
882 (dolist (remove '(t nil))
883 (let* ((variant-name (if remove "remove" "set"))
885 (intern (format function-format variant-name)))
886 (shortcut (format "%c" (if remove (upcase data) data))))
887 (defalias function-name
888 ;; If it weren't for the function's docstring, we could
889 ;; use a closure, with lexical-let :-(
890 `(lambda (&rest articles)
892 "%s the %s mark over process-marked ARTICLES."
893 (upcase-initials variant-name)
896 (gnus-summary-work-articles current-prefix-arg))
897 (gnus-registry--set/remove-mark ',mark ',remove articles)))
898 (push function-name keys-plist)
899 (push shortcut keys-plist)
900 (push (vector (format "%s %s"
901 (upcase-initials variant-name)
904 gnus-registry-misc-menus)
905 (gnus-message 9 "Defined mark handling function %s"
908 '(gnus-registry-mark-map "M" gnus-summary-mark-map)
910 (add-hook 'gnus-summary-menu-hook
913 gnus-summary-misc-menu
915 (cons "Registry Marks" gnus-registry-misc-menus))))))
917 (make-obsolete 'gnus-registry-user-format-function-M
918 'gnus-registry-article-marks-to-chars "24.1") ?
920 (defalias 'gnus-registry-user-format-function-M
921 'gnus-registry-article-marks-to-chars)
924 ;; (defalias 'gnus-user-format-function-M 'gnus-registry-article-marks-to-chars)
925 (defun gnus-registry-article-marks-to-chars (headers)
926 "Show the marks for an article by the :char property."
927 (let* ((id (mail-header-message-id headers))
928 (marks (when id (gnus-registry-get-id-key id 'mark))))
929 (mapconcat (lambda (mark)
932 (assoc mark gnus-registry-marks))
937 ;; (defalias 'gnus-user-format-function-M 'gnus-registry-article-marks-to-names)
938 (defun gnus-registry-article-marks-to-names (headers)
939 "Show the marks for an article by name."
940 (let* ((id (mail-header-message-id headers))
941 (marks (when id (gnus-registry-get-id-key id 'mark))))
942 (mapconcat (lambda (mark) (symbol-name mark)) marks ",")))
944 (defun gnus-registry-read-mark ()
945 "Read a mark name from the user with completion."
946 (let ((mark (gnus-completing-read
948 (mapcar 'symbol-name (mapcar 'car gnus-registry-marks))
950 (symbol-name gnus-registry-default-mark))))
954 (defun gnus-registry-set-article-mark (&rest articles)
955 "Apply a mark to process-marked ARTICLES."
956 (interactive (gnus-summary-work-articles current-prefix-arg))
957 (gnus-registry-set-article-mark-internal (gnus-registry-read-mark)
960 (defun gnus-registry-remove-article-mark (&rest articles)
961 "Remove a mark from process-marked ARTICLES."
962 (interactive (gnus-summary-work-articles current-prefix-arg))
963 (gnus-registry-set-article-mark-internal (gnus-registry-read-mark)
966 (defun gnus-registry-set-article-mark-internal (mark
970 "Apply or remove MARK across a list of ARTICLES."
971 (let ((article-id-list
972 (mapcar 'gnus-registry-fetch-message-id-fast articles)))
973 (dolist (id article-id-list)
974 (let* ((marks (delq mark (gnus-registry-get-id-key id 'mark)))
975 (marks (if remove marks (cons mark marks))))
977 (gnus-message 1 "%s mark %s with message ID %s, resulting in %S"
978 (if remove "Removing" "Adding")
980 (gnus-registry-set-id-key id 'mark marks)))))
982 (defun gnus-registry-get-article-marks (&rest articles)
983 "Get the Gnus registry marks for ARTICLES and show them if interactive.
984 Uses process/prefix conventions. For multiple articles,
985 only the last one's marks are returned."
986 (interactive (gnus-summary-work-articles 1))
987 (let* ((article (last articles))
988 (id (gnus-registry-fetch-message-id-fast article))
989 (marks (when id (gnus-registry-get-id-key id 'mark))))
990 (when (gmm-called-interactively-p 'any)
991 (gnus-message 1 "Marks are %S" marks))
994 (defun gnus-registry-group-count (id)
995 "Get the number of groups of a message, based on the message ID."
996 (length (gnus-registry-get-id-key id 'group)))
998 (defun gnus-registry-get-or-make-entry (id)
999 (let* ((db gnus-registry-db)
1000 ;; safe if not found
1001 (entries (registry-lookup db (list id))))
1003 (when (null entries)
1004 (gnus-registry-insert db id (list (list 'creation-time (current-time))
1005 '(group) '(sender) '(subject)))
1006 (setq entries (registry-lookup db (list id))))
1008 (nth 1 (assoc id entries))))
1010 (defun gnus-registry-delete-entries (idlist)
1011 (registry-delete gnus-registry-db idlist nil))
1013 (defun gnus-registry-get-id-key (id key)
1014 (cdr-safe (assq key (gnus-registry-get-or-make-entry id))))
1016 (defun gnus-registry-set-id-key (id key vals)
1017 (let* ((db gnus-registry-db)
1018 (entry (gnus-registry-get-or-make-entry id)))
1019 (registry-delete db (list id) nil)
1020 (setq entry (cons (cons key vals) (assq-delete-all key entry)))
1021 (gnus-registry-insert db id entry)
1024 (defun gnus-registry-insert (db id entry)
1025 "Just like `registry-insert' but tries to prune on error."
1026 (when (registry-full db)
1027 (message "Trying to prune the registry because it's full")
1028 (registry-prune db))
1029 (registry-insert db id entry)
1032 (defun gnus-registry-import-eld (file)
1033 (interactive "fOld registry file to import? ")
1035 ;; (setq gnus-registry-alist '(
1036 ;; ("<messageID>" ((marks nil)
1037 ;; (mtime 19365 1776 440496)
1038 ;; (sender . "root (Cron Daemon)")
1039 ;; (subject . "Cron"))
1040 ;; "cron" "nnml+private:cron")
1042 (when (boundp 'gnus-registry-alist)
1043 (let* ((old (symbol-value 'gnus-registry-alist))
1045 (expected (length old))
1047 (while (car-safe old)
1049 ;; don't use progress reporters for backwards compatibility
1050 (when (and (< 0 expected)
1051 (= 0 (mod count 100)))
1052 (message "importing: %d of %d (%.2f%%)"
1053 count expected (/ (* 100 count) expected)))
1054 (setq entry (car-safe old)
1056 (let* ((id (car-safe entry))
1057 (new-entry (gnus-registry-get-or-make-entry id))
1058 (rest (cdr-safe entry))
1059 (groups (loop for p in rest
1063 ;; remove all the strings from the entry
1065 (if (stringp elem) (setq rest (delq elem rest))))
1066 (gnus-registry-set-id-key id 'group groups)
1067 ;; just use the first extra element
1068 (setq rest (car-safe rest))
1069 (while (car-safe rest)
1070 (setq extra-cell (car-safe rest)
1071 key (car-safe extra-cell)
1072 val (cdr-safe extra-cell)
1073 rest (cdr-safe rest))
1074 (when (and val (atom val))
1075 (setq val (list val)))
1076 (gnus-registry-set-id-key id key val))))
1077 (message "Import done, collected %d entries" count))))
1080 (defun gnus-registry-initialize ()
1081 "Initialize the Gnus registry."
1083 (gnus-message 5 "Initializing the registry")
1084 (gnus-registry-install-hooks)
1085 (gnus-registry-install-shortcuts)
1086 (gnus-registry-read))
1088 ;; FIXME: Why autoload this function?
1090 (defun gnus-registry-install-hooks ()
1091 "Install the registry hooks."
1093 (setq gnus-registry-enabled t)
1094 (add-hook 'gnus-summary-article-move-hook 'gnus-registry-action)
1095 (add-hook 'gnus-summary-article-delete-hook 'gnus-registry-action)
1096 (add-hook 'gnus-summary-article-expire-hook 'gnus-registry-action)
1097 (add-hook 'nnmail-spool-hook 'gnus-registry-spool-action)
1099 (add-hook 'gnus-save-newsrc-hook 'gnus-registry-save)
1100 (add-hook 'gnus-read-newsrc-el-hook 'gnus-registry-read)
1102 (add-hook 'gnus-summary-prepare-hook 'gnus-registry-register-message-ids))
1104 (defun gnus-registry-unload-hook ()
1105 "Uninstall the registry hooks."
1107 (remove-hook 'gnus-summary-article-move-hook 'gnus-registry-action)
1108 (remove-hook 'gnus-summary-article-delete-hook 'gnus-registry-action)
1109 (remove-hook 'gnus-summary-article-expire-hook 'gnus-registry-action)
1110 (remove-hook 'nnmail-spool-hook 'gnus-registry-spool-action)
1112 (remove-hook 'gnus-save-newsrc-hook 'gnus-registry-save)
1113 (remove-hook 'gnus-read-newsrc-el-hook 'gnus-registry-read)
1115 (remove-hook 'gnus-summary-prepare-hook 'gnus-registry-register-message-ids)
1116 (setq gnus-registry-enabled nil))
1118 (add-hook 'gnus-registry-unload-hook 'gnus-registry-unload-hook)
1120 (defun gnus-registry-install-p ()
1121 "If the registry is not already enabled, and `gnus-registry-install' is t,
1122 the registry is enabled. If `gnus-registry-install' is `ask',
1123 the user is asked first. Returns non-nil iff the registry is enabled."
1125 (unless gnus-registry-enabled
1126 (when (if (eq gnus-registry-install 'ask)
1128 (concat "Enable the Gnus registry? "
1129 "See the variable `gnus-registry-install' "
1130 "to get rid of this query permanently. "))
1131 gnus-registry-install)
1132 (gnus-registry-initialize)))
1133 gnus-registry-enabled)
1135 ;; largely based on nnir-warp-to-article
1136 (defun gnus-try-warping-via-registry ()
1137 "Try to warp via the registry.
1138 This will be done via the current article's source group based on
1139 data stored in the registry."
1141 (when (gnus-summary-article-header)
1142 (let* ((message-id (mail-header-id (gnus-summary-article-header)))
1143 ;; Retrieve the message's group(s) from the registry
1144 (groups (gnus-registry-get-id-key message-id 'group))
1145 ;; If starting from an ephemeral group, this describes
1146 ;; how to restore the window configuration
1148 (gnus-ephemeral-group-p gnus-newsgroup-name))
1149 (seen-groups (list (gnus-group-group-name))))
1152 (dolist (group (mapcar 'gnus-simplify-group-name groups))
1154 ;; skip over any groups we really don't want to warp to.
1155 (unless (or (member group seen-groups)
1156 (gnus-ephemeral-group-p group) ;; any ephemeral group
1157 (memq (car (gnus-find-method-for-group group))
1158 ;; Specific methods; this list may need to expand.
1161 ;; remember that we've seen this group already
1162 (push group seen-groups)
1164 ;; first exit from any ephemeral summary buffer.
1167 ;; and if the ephemeral summary buffer in turn came from
1168 ;; another summary buffer we have to clean that summary
1170 (when (eq (cdr quit-config) 'summary)
1171 (gnus-summary-exit))
1172 ;; remember that we've already done this part
1173 (setq quit-config nil))
1175 ;; Try to activate the group. If that fails, just move
1176 ;; along. We may have more groups to work with
1179 (gnus-select-group-with-message-id group message-id) t)
1180 (throw 'found t))))))))
1182 ;; TODO: a few things
1184 (provide 'gnus-registry)
1186 ;;; gnus-registry.el ends here