1 ;;; nnir.el --- search mail with various search engines -*- coding: iso-8859-1 -*-
3 ;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
4 ;; 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
6 ;; Author: Kai Großjohann <grossjohann@ls6.cs.uni-dortmund.de>
7 ;; Swish-e and Swish++ backends by:
8 ;; Christoph Conrad <christoph.conrad@gmx.de>.
9 ;; IMAP backend by: Simon Josefsson <jas@pdc.kth.se>.
10 ;; IMAP search by: Torsten Hilbrich <torsten.hilbrich <at> gmx.net>
11 ;; IMAP search improved by Daniel Pittman <daniel@rimspace.net>.
12 ;; nnmaildir support for Swish++ and Namazu backends by:
13 ;; Justus Piater <Justus <at> Piater.name>
14 ;; Keywords: news mail searching ir
16 ;; This file is part of GNU Emacs.
18 ;; GNU Emacs is free software: you can redistribute it and/or modify
19 ;; it under the terms of the GNU General Public License as published by
20 ;; the Free Software Foundation, either version 3 of the License, or
21 ;; (at your option) any later version.
23 ;; GNU Emacs is distributed in the hope that it will be useful,
24 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
25 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 ;; GNU General Public License for more details.
28 ;; You should have received a copy of the GNU General Public License
29 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
33 ;; TODO: Documentation in the Gnus manual
35 ;; Where in the existing gnus manual would this fit best?
37 ;; What does it do? Well, it allows you to search your mail using
38 ;; some search engine (imap, namazu, swish-e, gmane and others -- see
39 ;; later) by typing `G G' in the Group buffer. You will then get a
40 ;; buffer which shows all articles matching the query, sorted by
41 ;; Retrieval Status Value (score).
43 ;; When looking at the retrieval result (in the Summary buffer) you
44 ;; can type `A W' (aka M-x gnus-warp-to-article RET) on an article. You
45 ;; will be warped into the group this article came from. Typing `A T'
46 ;; (aka M-x gnus-summary-refer-thread RET) will warp to the group and
47 ;; also show the thread this article is part of.
49 ;; The Lisp setup may involve setting a few variables and setting up the
50 ;; search engine. You can define the variables in the server definition
52 ;; (setq gnus-secondary-select-methods '(
53 ;; (nnimap "" (nnimap-address "localhost")
54 ;; (nnir-search-engine namazu)
56 ;; The main variable to set is `nnir-search-engine'. Choose one of
57 ;; the engines listed in `nnir-engines'. (Actually `nnir-engines' is
58 ;; an alist, type `C-h v nnir-engines RET' for more information; this
59 ;; includes examples for setting `nnir-search-engine', too.)
61 ;; If you use one of the local indices (namazu, find-grep, swish) you
62 ;; must also set up a search engine backend.
66 ;; The Namazu backend requires you to have one directory containing all
67 ;; index files, this is controlled by the `nnir-namazu-index-directory'
68 ;; variable. To function the `nnir-namazu-remove-prefix' variable must
69 ;; also be correct, see the documentation for `nnir-namazu-remove-prefix'
72 ;; It is particularly important not to pass any any switches to namazu
73 ;; that will change the output format. Good switches to use include
74 ;; `--sort', `--ascending', `--early' and `--late'. Refer to the Namazu
75 ;; documentation for further information on valid switches.
77 ;; To index my mail with the `mknmz' program I use the following
78 ;; configuration file:
81 ;; | package conf; # Don't remove this line!
83 ;; | # Paths which will not be indexed. Don't use `^' or `$' anchors.
84 ;; | $EXCLUDE_PATH = "spam|sent";
86 ;; | # Header fields which should be searchable. case-insensitive
87 ;; | $REMAIN_HEADER = "from|date|message-id|subject";
89 ;; | # Searchable fields. case-insensitive
90 ;; | $SEARCH_FIELD = "from|date|message-id|subject";
92 ;; | # The max length of a word.
93 ;; | $WORD_LENG_MAX = 128;
95 ;; | # The max length of a field.
96 ;; | $MAX_FIELD_LENGTH = 256;
99 ;; My mail is stored in the directories ~/Mail/mail/, ~/Mail/lists/ and
100 ;; ~/Mail/archive/, so to index them I go to the directory set in
101 ;; `nnir-namazu-index-directory' and issue the following command.
103 ;; mknmz --mailnews ~/Mail/archive/ ~/Mail/mail/ ~/Mail/lists/
105 ;; For maximum searching efficiency I have a cron job set to run this
106 ;; command every four hours.
110 ;; The find-grep engine simply runs find(1) to locate eligible
111 ;; articles and searches them with grep(1). This, of course, is much
112 ;; slower than using a proper search engine but OTOH doesn't require
113 ;; maintenance of an index and is still faster than using any built-in
114 ;; means for searching. The method specification of the server to
115 ;; search must include a directory for this engine to work (E.g.,
116 ;; `nnml-directory'). The tools must be POSIX compliant. GNU Find
117 ;; prior to version 4.2.12 (4.2.26 on Linux due to incorrect ARG_MAX
118 ;; handling) does not work.
120 ;; | ;; find-grep configuration for searching the Gnus Cache
123 ;; | (nnml-get-new-mail nil)
124 ;; | (nnir-search-engine find-grep)
125 ;; | (nnml-directory "~/News/cache/")
126 ;; | (nnml-active-file "~/News/cache/active"))
129 ;; Developer information:
131 ;; I have tried to make the code expandable. Basically, it is divided
132 ;; into two layers. The upper layer is somewhat like the `nnvirtual'
133 ;; backend: given a specification of what articles to show from
134 ;; another backend, it creates a group containing exactly those
135 ;; articles. The lower layer issues a query to a search engine and
136 ;; produces such a specification of what articles to show from the
139 ;; The interface between the two layers consists of the single
140 ;; function `nnir-run-query', which just selects the appropriate
141 ;; function for the search engine one is using. The input to
142 ;; `nnir-run-query' is a string, representing the query as input by
143 ;; the user. The output of `nnir-run-query' is supposed to be a
144 ;; vector, each element of which should in turn be a three-element
145 ;; vector. The first element should be full group name of the article,
146 ;; the second element should be the article number, and the third
147 ;; element should be the Retrieval Status Value (RSV) as returned from
148 ;; the search engine. An RSV is the score assigned to the document by
149 ;; the search engine. For Boolean search engines, the
150 ;; RSV is always 1000 (or 1 or 100, or whatever you like).
152 ;; The sorting order of the articles in the summary buffer created by
153 ;; nnir is based on the order of the articles in the above mentioned
154 ;; vector, so that's where you can do the sorting you'd like. Maybe
155 ;; it would be nice to have a way of displaying the search result
156 ;; sorted differently?
158 ;; So what do you need to do when you want to add another search
159 ;; engine? You write a function that executes the query. Temporary
160 ;; data from the search engine can be put in `nnir-tmp-buffer'. This
161 ;; function should return the list of articles as a vector, as
162 ;; described above. Then, you need to register this backend in
163 ;; `nnir-engines'. Then, users can choose the backend by setting
164 ;; `nnir-search-engine' as a server variable.
170 ;; For Emacs <22.2 and XEmacs.
172 (unless (fboundp 'declare-function) (defmacro declare-function (&rest r))))
175 (require 'gnus-group)
181 ;;; Internal Variables:
183 (defvar nnir-current-query nil
184 "Internal: stores current query (= group name).")
186 (defvar nnir-current-server nil
187 "Internal: stores current server (does it ever change?).")
189 (defvar nnir-current-group-marked nil
190 "Internal: stores current list of process-marked groups.")
192 (defvar nnir-artlist nil
193 "Internal: stores search result.")
195 (defvar nnir-tmp-buffer " *nnir*"
196 "Internal: temporary buffer.")
198 (defvar nnir-search-history ()
199 "Internal: the history for querying search options in nnir")
201 (defvar nnir-extra-parms nil
202 "Internal: stores request for extra search parms")
206 (defvar nnir-imap-search-arguments
207 '(("Whole message" . "TEXT")
208 ("Subject" . "SUBJECT")
212 "Mapping from user readable keys to IMAP search items for use in nnir")
214 (defvar nnir-imap-search-other "HEADER %S"
215 "The IMAP search item to use for anything other than
216 `nnir-imap-search-arguments'. By default this is the name of an
219 (defvar nnir-imap-search-argument-history ()
220 "The history for querying search options in nnir")
224 ;; Data type article list.
226 (defmacro nnir-artlist-length (artlist)
227 "Returns number of articles in artlist."
230 (defmacro nnir-artlist-article (artlist n)
231 "Returns from ARTLIST the Nth artitem (counting starting at 1)."
233 (elt ,artlist (1- ,n))))
235 (defmacro nnir-artitem-group (artitem)
236 "Returns the group from the ARTITEM."
239 (defmacro nnir-artitem-number (artitem)
240 "Returns the number from the ARTITEM."
243 (defmacro nnir-artitem-rsv (artitem)
244 "Returns the Retrieval Status Value (RSV, score) from the ARTITEM."
247 (defmacro nnir-article-group (article)
248 "Returns the group for ARTICLE"
249 `(nnir-artitem-group (nnir-artlist-article nnir-artlist ,article)))
251 (defmacro nnir-article-number (article)
252 "Returns the number for ARTICLE"
253 `(nnir-artitem-number (nnir-artlist-article nnir-artlist ,article)))
255 (defmacro nnir-article-rsv (article)
256 "Returns the rsv for ARTICLE"
257 `(nnir-artitem-rsv (nnir-artlist-article nnir-artlist ,article)))
259 (defsubst nnir-article-ids (article)
260 "Returns the pair `(nnir id . real id)' of ARTICLE"
261 (cons article (nnir-article-number article)))
263 (defmacro nnir-categorize (sequence keyfunc &optional valuefunc)
264 "Sorts a sequence into categories and returns a list of the form
265 `((key1 (element11 element12)) (key2 (element21 element22))'.
266 The category key for a member of the sequence is obtained
267 as `(keyfunc member)' and the corresponding element is just
268 `member'. If `valuefunc' is non-nil, the element of the list
269 is `(valuefunc member)'."
270 `(unless (null ,sequence)
274 (let ((y (,keyfunc member))
279 (push x (cadr (assoc y value)))
280 (push (list y (list x)) value))))
289 (autoload 'nnimap-buffer "nnimap")
290 (autoload 'nnimap-command "nnimap")
291 (autoload 'nnimap-possibly-change-group "nnimap")
292 (autoload 'gnus-registry-action "gnus-registry"))
295 (nnoo-define-basics nnir)
297 (gnus-declare-backend "nnir" 'mail)
300 ;;; User Customizable Variables:
303 "Search groups in Gnus with assorted seach engines."
306 (defcustom nnir-method-default-engines
309 "*Alist of default search engines keyed by server method."
313 (defcustom nnir-ignored-newsgroups ""
314 "*A regexp to match newsgroups in the active file that should
315 be skipped when searching."
319 (defcustom nnir-summary-line-format nil
320 "*The format specification of the lines in an nnir summary buffer.
322 All the items from `gnus-summary-line-format' are available, along
323 with three items unique to nnir summary buffers:
325 %Z Search retrieval score value (integer)
326 %G Article original full group name (string)
327 %g Article original short group name (string)
329 If nil this will use `gnus-summary-line-format'."
333 (defcustom nnir-retrieve-headers-override-function nil
334 "*If non-nil, a function that accepts an article list and group
335 and populates the `nntp-server-buffer' with the retrieved
336 headers. Must return either 'nov or 'headers indicating the
337 retrieved header format.
339 If this variable is nil, or if the provided function returns nil for a search
340 result, `gnus-retrieve-headers' will be called instead."
344 (defcustom nnir-imap-default-search-key "Whole message"
345 "*The default IMAP search key for an nnir search. Must be one of
346 the keys in `nnir-imap-search-arguments'. To use raw imap queries
347 by default set this to \"Imap\"."
351 (defcustom nnir-swish++-configuration-file
352 (expand-file-name "~/Mail/swish++.conf")
353 "*Configuration file for swish++."
357 (defcustom nnir-swish++-program "search"
358 "*Name of swish++ search executable."
362 (defcustom nnir-swish++-additional-switches '()
363 "*A list of strings, to be given as additional arguments to swish++.
365 Note that this should be a list. Ie, do NOT use the following:
366 (setq nnir-swish++-additional-switches \"-i -w\") ; wrong
368 (setq nnir-swish++-additional-switches '(\"-i\" \"-w\"))"
369 :type '(repeat (string))
372 (defcustom nnir-swish++-remove-prefix (concat (getenv "HOME") "/Mail/")
373 "*The prefix to remove from each file name returned by swish++
374 in order to get a group name (albeit with / instead of .). This is a
377 This variable is very similar to `nnir-namazu-remove-prefix', except
378 that it is for swish++, not Namazu."
383 ;; URL: http://swish-e.org/
384 ;; Variables `nnir-swish-e-index-file', `nnir-swish-e-program' and
385 ;; `nnir-swish-e-additional-switches'
387 (make-obsolete-variable 'nnir-swish-e-index-file
388 'nnir-swish-e-index-files "Emacs 23.1")
389 (defcustom nnir-swish-e-index-file
390 (expand-file-name "~/Mail/index.swish-e")
391 "*Index file for swish-e.
392 This could be a server parameter.
393 It is never consulted once `nnir-swish-e-index-files', which should be
394 used instead, has been customized."
398 (defcustom nnir-swish-e-index-files
399 (list nnir-swish-e-index-file)
400 "*List of index files for swish-e.
401 This could be a server parameter."
402 :type '(repeat (file))
405 (defcustom nnir-swish-e-program "swish-e"
406 "*Name of swish-e search executable.
407 This cannot be a server parameter."
411 (defcustom nnir-swish-e-additional-switches '()
412 "*A list of strings, to be given as additional arguments to swish-e.
414 Note that this should be a list. Ie, do NOT use the following:
415 (setq nnir-swish-e-additional-switches \"-i -w\") ; wrong
417 (setq nnir-swish-e-additional-switches '(\"-i\" \"-w\"))
419 This could be a server parameter."
420 :type '(repeat (string))
423 (defcustom nnir-swish-e-remove-prefix (concat (getenv "HOME") "/Mail/")
424 "*The prefix to remove from each file name returned by swish-e
425 in order to get a group name (albeit with / instead of .). This is a
428 This variable is very similar to `nnir-namazu-remove-prefix', except
429 that it is for swish-e, not Namazu.
431 This could be a server parameter."
435 ;; HyREX engine, see <URL:http://ls6-www.cs.uni-dortmund.de/>
437 (defcustom nnir-hyrex-program "nnir-search"
438 "*Name of the nnir-search executable."
442 (defcustom nnir-hyrex-additional-switches '()
443 "*A list of strings, to be given as additional arguments for nnir-search.
444 Note that this should be a list. Ie, do NOT use the following:
445 (setq nnir-hyrex-additional-switches \"-ddl ddl.xml -c nnir\") ; wrong !
447 (setq nnir-hyrex-additional-switches '(\"-ddl\" \"ddl.xml\" \"-c\" \"nnir\"))"
448 :type '(repeat (string))
451 (defcustom nnir-hyrex-index-directory (getenv "HOME")
452 "*Index directory for HyREX."
456 (defcustom nnir-hyrex-remove-prefix (concat (getenv "HOME") "/Mail/")
457 "*The prefix to remove from each file name returned by HyREX
458 in order to get a group name (albeit with / instead of .).
460 For example, suppose that HyREX returns file names such as
461 \"/home/john/Mail/mail/misc/42\". For this example, use the following
462 setting: (setq nnir-hyrex-remove-prefix \"/home/john/Mail/\")
463 Note the trailing slash. Removing this prefix gives \"mail/misc/42\".
464 `nnir' knows to remove the \"/42\" and to replace \"/\" with \".\" to
465 arrive at the correct group name, \"mail.misc\"."
469 ;; Namazu engine, see <URL:http://www.namazu.org/>
471 (defcustom nnir-namazu-program "namazu"
472 "*Name of Namazu search executable."
476 (defcustom nnir-namazu-index-directory (expand-file-name "~/Mail/namazu/")
477 "*Index directory for Namazu."
481 (defcustom nnir-namazu-additional-switches '()
482 "*A list of strings, to be given as additional arguments to namazu.
483 The switches `-q', `-a', and `-s' are always used, very few other switches
484 make any sense in this context.
486 Note that this should be a list. Ie, do NOT use the following:
487 (setq nnir-namazu-additional-switches \"-i -w\") ; wrong
489 (setq nnir-namazu-additional-switches '(\"-i\" \"-w\"))"
490 :type '(repeat (string))
493 (defcustom nnir-namazu-remove-prefix (concat (getenv "HOME") "/Mail/")
494 "*The prefix to remove from each file name returned by Namazu
495 in order to get a group name (albeit with / instead of .).
497 For example, suppose that Namazu returns file names such as
498 \"/home/john/Mail/mail/misc/42\". For this example, use the following
499 setting: (setq nnir-namazu-remove-prefix \"/home/john/Mail/\")
500 Note the trailing slash. Removing this prefix gives \"mail/misc/42\".
501 `nnir' knows to remove the \"/42\" and to replace \"/\" with \".\" to
502 arrive at the correct group name, \"mail.misc\"."
506 ;;; Developer Extension Variable:
509 `((imap nnir-run-imap
511 "Imap Search in" ; Prompt
512 ,(mapcar 'car nnir-imap-search-arguments) ; alist for completing
513 nil ; allow any user input
515 nnir-imap-search-argument-history ; the history to use
516 ,nnir-imap-default-search-key ; default
518 (gmane nnir-run-gmane
519 ((author . "Gmane Author: ")))
520 (swish++ nnir-run-swish++
521 ((group . "Swish++ Group spec: ")))
522 (swish-e nnir-run-swish-e
523 ((group . "Swish-e Group spec: ")))
524 (namazu nnir-run-namazu
526 (hyrex nnir-run-hyrex
527 ((group . "Hyrex Group spec: ")))
528 (find-grep nnir-run-find-grep
529 ((grep-options . "Grep options: "))))
530 "Alist of supported search engines.
531 Each element in the alist is a three-element list (ENGINE FUNCTION ARGS).
532 ENGINE is a symbol designating the searching engine. FUNCTION is also
533 a symbol, giving the function that does the search. The third element
534 ARGS is a list of cons pairs (PARAM . PROMPT). When issuing a query,
535 the FUNCTION will issue a query for each of the PARAMs, using PROMPT.
537 The value of `nnir-search-engine' must be one of the ENGINE symbols.
538 For example, for searching a server using namazu include
539 (nnir-search-engine namazu)
540 in the server definition. Note that you have to set additional
541 variables for most backends. For example, the `namazu' backend
542 needs the variables `nnir-namazu-program',
543 `nnir-namazu-index-directory' and `nnir-namazu-remove-prefix'.
545 Add an entry here when adding a new search engine.")
550 (defun gnus-group-make-nnir-group (nnir-extra-parms)
551 "Create an nnir group. Asks for query."
553 (setq nnir-current-query nil
554 nnir-current-server nil
555 nnir-current-group-marked nil
557 (let* ((query (read-string "Query: " nil 'nnir-search-history))
558 (parms (list (cons 'query query)))
559 (srv (if (gnus-server-server-name)
561 (add-to-list 'parms (cons 'unique-id (message-unique-id)) t)
562 (gnus-group-read-ephemeral-group
563 (concat "nnir:" (prin1-to-string parms)) (list 'nnir srv) t
564 (cons (current-buffer) gnus-current-window-configuration)
568 ;; Gnus backend interface functions.
570 (deffoo nnir-open-server (server &optional definitions)
571 ;; Just set the server variables appropriately.
572 (add-hook 'gnus-summary-mode-hook 'nnir-mode)
573 (nnoo-change-server 'nnir server definitions))
575 (deffoo nnir-request-group (group &optional server fast info)
576 "GROUP is the query string."
577 (nnir-possibly-change-server server)
578 ;; Check for cache and return that if appropriate.
579 (if (and (equal group nnir-current-query)
580 (equal gnus-group-marked nnir-current-group-marked)
582 (equal server nnir-current-server)))
585 (setq nnir-artlist (nnir-run-query group server)))
586 (with-current-buffer nntp-server-buffer
587 (setq nnir-current-query group)
588 (when server (setq nnir-current-server server))
589 (setq nnir-current-group-marked gnus-group-marked)
590 (if (zerop (length nnir-artlist))
591 (nnheader-report 'nnir "Search produced empty results.")
592 ;; Remember data for cache.
593 (nnheader-insert "211 %d %d %d %s\n"
594 (nnir-artlist-length nnir-artlist) ; total #
596 (nnir-artlist-length nnir-artlist) ; last #
597 group)))) ; group name
599 (deffoo nnir-retrieve-headers (articles &optional group server fetch-old)
600 (with-current-buffer nntp-server-buffer
601 (let ((gnus-inhibit-demon t)
602 (articles-by-group (nnir-categorize
603 articles nnir-article-group nnir-article-ids))
605 (while (not (null articles-by-group))
606 (let* ((group-articles (pop articles-by-group))
607 (artgroup (car group-articles))
608 (articleids (cadr group-articles))
609 (artlist (sort (mapcar 'cdr articleids) '<))
610 (server (gnus-group-server artgroup))
611 (gnus-override-method (gnus-server-to-method server))
616 ;; "nnir-retrieve-headers doesn't grok message ids: %s"
618 (nnir-possibly-change-server server)
621 (case (setq gnus-headers-retrieved-by
624 nnir-retrieve-headers-override-function
625 (funcall nnir-retrieve-headers-override-function
627 (gnus-retrieve-headers artlist artgroup nil)))
629 (setq parsefunc 'nnheader-parse-nov))
631 (setq parsefunc 'nnheader-parse-head))
632 (t (error "Unknown header type %s while requesting articles \
633 of group %s" gnus-headers-retrieved-by artgroup)))
634 (goto-char (point-min))
636 (let* ((novitem (funcall parsefunc))
637 (artno (mail-header-number novitem))
638 (art (car (rassq artno articleids))))
640 (mail-header-set-number novitem art)
641 (push novitem headers))
646 (< (mail-header-number x) (mail-header-number y)))))
648 (mapc 'nnheader-insert-nov headers)
651 (deffoo nnir-request-article (article &optional group server to-buffer)
652 (if (stringp article)
655 "nnir-retrieve-headers doesn't grok message ids: %s"
658 (let ((artfullgroup (nnir-article-group article))
659 (artno (nnir-article-number article)))
660 (message "Requesting article %d from group %s"
663 (with-current-buffer to-buffer
664 (let ((gnus-article-decode-hook nil))
665 (gnus-request-article-this-buffer artno artfullgroup)))
666 (gnus-request-article artno artfullgroup))
667 (cons artfullgroup artno)))))
669 (deffoo nnir-request-move-article (article group server accept-form
670 &optional last internal-move-group)
671 (let* ((artfullgroup (nnir-article-group article))
672 (artno (nnir-article-number article))
673 (to-newsgroup (nth 1 accept-form))
674 (to-method (gnus-find-method-for-group to-newsgroup))
675 (from-method (gnus-find-method-for-group artfullgroup))
676 (move-is-internal (gnus-server-equal from-method to-method)))
677 (unless (gnus-check-backend-function
678 'request-move-article artfullgroup)
679 (error "The group %s does not support article moving" artfullgroup))
680 (gnus-request-move-article
686 (and move-is-internal
687 to-newsgroup ; Not respooling
688 (gnus-group-real-name to-newsgroup)))))
690 (deffoo nnir-request-expire-articles (articles group &optional server force)
692 (let ((articles-by-group (nnir-categorize
693 articles nnir-article-group nnir-article-ids))
695 (while (not (null articles-by-group))
696 (let* ((group-articles (pop articles-by-group))
697 (artgroup (car group-articles))
698 (articleids (cadr group-articles))
699 (artlist (sort (mapcar 'cdr articleids) '<)))
700 (unless (gnus-check-backend-function 'request-expire-articles
702 (error "The group %s does not support article deletion" artgroup))
703 (unless (gnus-check-server (gnus-find-method-for-group artgroup))
704 (error "Couldn't open server for group %s" artgroup))
705 (push (gnus-request-expire-articles
706 artlist artgroup force)
708 (sort (delq nil not-deleted) '<))
711 (deffoo nnir-warp-to-article ()
712 (let* ((cur (if (> (gnus-summary-article-number) 0)
713 (gnus-summary-article-number)
714 (error "This is not a real article.")))
715 (gnus-newsgroup-name (nnir-article-group cur))
716 (backend-number (nnir-article-number cur)))
717 (gnus-summary-read-group-1 gnus-newsgroup-name t t gnus-summary-buffer
718 nil (list backend-number))))
720 (nnoo-define-skeleton nnir)
723 (defmacro nnir-add-result (dirnam artno score prefix server artlist)
724 "Ask `nnir-compose-result' to construct a result vector,
725 and if it is non-nil, add it to artlist."
726 `(let ((result (nnir-compose-result ,dirnam ,artno ,score ,prefix ,server)))
727 (when (not (null result))
728 (push result ,artlist))))
730 (autoload 'nnmaildir-base-name-to-article-number "nnmaildir")
732 ;; Helper function currently used by the Swish++ and Namazu backends;
733 ;; perhaps useful for other backends as well
734 (defun nnir-compose-result (dirnam article score prefix server)
735 "Extract the group from dirnam, and create a result vector
736 ready to be added to the list of search results."
738 ;; remove nnir-*-remove-prefix from beginning of dirnam filename
739 (when (string-match (concat "^" prefix) dirnam)
740 (setq dirnam (replace-match "" t t dirnam)))
742 (when (file-readable-p (concat prefix dirnam article))
743 ;; remove trailing slash and, for nnmaildir, cur/new/tmp
746 (if (string= (gnus-group-server server) "nnmaildir")
749 ;; Set group to dirnam without any leading dots or slashes,
750 ;; and with all subsequent slashes replaced by dots
751 (let ((group (gnus-replace-in-string
752 (gnus-replace-in-string dirnam "^[./\\]" "" t)
755 (vector (gnus-group-full-name group server)
756 (if (string= (gnus-group-server server) "nnmaildir")
757 (nnmaildir-base-name-to-article-number
758 (substring article 0 (string-match ":" article))
760 (string-to-number article))
761 (string-to-number score)))))
763 ;;; Search Engine Interfaces:
766 (defun nnir-run-imap (query srv &optional groups)
767 "Run a search against an IMAP back-end server.
768 This uses a custom query language parser; see `nnir-imap-make-query' for
769 details on the language and supported extensions"
771 (let ((qstring (cdr (assq 'query query)))
772 (server (cadr (gnus-server-to-method srv)))
773 (defs (caddr (gnus-server-to-method srv)))
774 (criteria (or (cdr (assq 'criteria query))
775 (cdr (assoc nnir-imap-default-search-key
776 nnir-imap-search-arguments))))
777 (gnus-inhibit-demon t)
778 (groups (or groups (nnir-get-active srv))))
779 (message "Opening server %s" server)
786 (when (nnimap-possibly-change-group
787 (gnus-group-short-name group) server)
788 (with-current-buffer (nnimap-buffer)
789 (message "Searching %s..." group)
791 (result (nnimap-command "UID SEARCH %s"
792 (if (string= criteria "")
794 (nnir-imap-make-query
795 criteria qstring)))))
798 (let ((artn (string-to-number artnum)))
800 (push (vector group artn 100)
802 (setq arts (1+ arts)))))
803 (and (car result) (cdr (assoc "SEARCH" (cdr result)))))
804 (message "Searching %s... %d matches" group arts)))
805 (message "Searching %s...done" group))
810 (defun nnir-imap-make-query (criteria qstring)
811 "Parse the query string and criteria into an appropriate IMAP search
812 expression, returning the string query to make.
814 This implements a little language designed to return the expected results
815 to an arbitrary query string to the end user.
817 The search is always case-insensitive, as defined by RFC2060, and supports
818 the following features (inspired by the Google search input language):
820 Automatic \"and\" queries
821 If you specify multiple words then they will be treated as an \"and\"
822 expression intended to match all components.
825 If you wrap your query in double-quotes then it will be treated as a
829 If you precede a term with \"-\" then it will negate that.
832 If you include an upper-case \"OR\" in your search it will cause the
833 term before it and the term after it to be treated as alternatives.
835 In future the following will be added to the language:
836 * support for date matches
837 * support for location of text matching within the query
838 * from/to/etc headers
839 * additional search terms
840 * flag based searching
841 * anything else that the RFC supports, basically."
842 ;; Walk through the query and turn it into an IMAP query string.
843 (nnir-imap-query-to-imap criteria (nnir-imap-parse-query qstring)))
846 (defun nnir-imap-query-to-imap (criteria query)
847 "Turn a s-expression format query into IMAP."
849 ;; Turn the expressions into IMAP text
851 (nnir-imap-expr-to-imap criteria item))
852 ;; The query, already in s-expr format.
854 ;; Append a space between each expression
858 (defun nnir-imap-expr-to-imap (criteria expr)
859 "Convert EXPR into an IMAP search expression on CRITERIA"
860 ;; What sort of expression is this, eh?
862 ;; Simple string term
864 (format "%s %S" criteria expr))
867 ;; Composite term: or expression
868 ((eq (car-safe expr) 'or)
870 (nnir-imap-expr-to-imap criteria (second expr))
871 (nnir-imap-expr-to-imap criteria (third expr))))
872 ;; Composite term: just the fax, mam
873 ((eq (car-safe expr) 'not)
874 (format "NOT (%s)" (nnir-imap-query-to-imap criteria (rest expr))))
875 ;; Composite term: just expand it all.
876 ((and (not (null expr)) (listp expr))
877 (format "(%s)" (nnir-imap-query-to-imap criteria expr)))
878 ;; Complex value, give up for now.
879 (t (error "Unhandled input: %S" expr))))
882 (defun nnir-imap-parse-query (string)
883 "Turn STRING into an s-expression based query based on the IMAP
884 query language as defined in `nnir-imap-make-query'.
886 This involves turning individual tokens into higher level terms
887 that the search language can then understand and use."
889 ;; Set up the parsing environment.
891 (goto-char (point-min))
892 ;; Now, collect the output terms and return them.
894 (while (not (nnir-imap-end-of-input))
895 (push (nnir-imap-next-expr) out))
899 (defun nnir-imap-next-expr (&optional count)
900 "Return the next expression from the current buffer."
901 (let ((term (nnir-imap-next-term count))
902 (next (nnir-imap-peek-symbol)))
903 ;; Are we looking at an 'or' expression?
905 ;; Handle 'expr or expr'
907 (list 'or term (nnir-imap-next-expr 2)))
912 (defun nnir-imap-next-term (&optional count)
913 "Return the next TERM from the current buffer."
914 (let ((term (nnir-imap-next-symbol count)))
915 ;; What sort of term is this?
917 ;; and -- just ignore it
918 ((eq term 'and) 'and)
920 ((eq term 'not) (list 'not (nnir-imap-next-expr)))
925 (defun nnir-imap-peek-symbol ()
926 "Return the next symbol from the current buffer, but don't consume it."
928 (nnir-imap-next-symbol)))
930 (defun nnir-imap-next-symbol (&optional count)
931 "Return the next symbol from the current buffer, or nil if we are
932 at the end of the buffer. If supplied COUNT skips some symbols before
933 returning the one at the supplied position."
934 (when (and (numberp count) (> count 1))
935 (nnir-imap-next-symbol (1- count)))
936 (let ((case-fold-search t))
937 ;; end of input stream?
938 (unless (nnir-imap-end-of-input)
939 ;; No, return the next symbol from the stream.
941 ;; negated expression -- return it and advance one char.
942 ((looking-at "-") (forward-char 1) 'not)
944 ((looking-at "\"") (nnir-imap-delimited-string "\""))
945 ;; list expression -- we parse the content and return this as a list.
947 (nnir-imap-parse-query (nnir-imap-delimited-string ")")))
948 ;; keyword input -- return a symbol version
949 ((looking-at "\\band\\b") (forward-char 3) 'and)
950 ((looking-at "\\bor\\b") (forward-char 2) 'or)
951 ((looking-at "\\bnot\\b") (forward-char 3) 'not)
952 ;; Simple, boring keyword
953 (t (let ((start (point))
954 (end (if (search-forward-regexp "[[:blank:]]" nil t)
957 ;; unskip if we hit a non-blank terminal character.
958 (when (string-match "[^[:blank:]]" (match-string 0))
960 (goto-char (point-max)))))
961 (buffer-substring start end)))))))
963 (defun nnir-imap-delimited-string (delimiter)
964 "Return a delimited string from the current buffer."
965 (let ((start (point)) end)
966 (forward-char 1) ; skip the first delimiter.
968 (unless (search-forward delimiter nil t)
969 (error "Unmatched delimited input with %s in query" delimiter))
970 (let ((here (point)))
971 (unless (equal (buffer-substring (- here 2) (- here 1)) "\\")
972 (setq end (point)))))
973 (buffer-substring (1+ start) (1- end))))
975 (defun nnir-imap-end-of-input ()
976 "Are we at the end of input?"
977 (skip-chars-forward "[[:blank:]]")
981 ;; Swish++ interface.
990 (defun nnir-run-swish++ (query server &optional group)
991 "Run QUERY against swish++.
992 Returns a vector of (group name, file name) pairs (also vectors,
995 Tested with swish++ 4.7 on GNU/Linux and with swish++ 5.0b2 on
999 ;; (error "The swish++ backend cannot search specific groups"))
1002 (let ( (qstring (cdr (assq 'query query)))
1003 (groupspec (cdr (assq 'group query)))
1004 (prefix (nnir-read-server-parm 'nnir-swish++-remove-prefix server))
1006 ;; nnml-use-compressed-files might be any string, but probably this
1007 ;; is sufficient. Note that we can't only use the value of
1008 ;; nnml-use-compressed-files because old articles might have been
1009 ;; saved with a different value.
1010 (article-pattern (if (string= (gnus-group-server server) "nnmaildir")
1012 "^[0-9]+\\(\\.[a-z0-9]+\\)?$"))
1013 score artno dirnam filenam)
1015 (when (equal "" qstring)
1016 (error "swish++: You didn't enter anything"))
1018 (set-buffer (get-buffer-create nnir-tmp-buffer))
1022 (message "Doing swish++ query %s on %s..." qstring groupspec)
1023 (message "Doing swish++ query %s..." qstring))
1025 (let* ((cp-list `( ,nnir-swish++-program
1026 nil ; input from /dev/null
1028 nil ; don't redisplay
1029 "--config-file" ,(nnir-read-server-parm 'nnir-swish++-configuration-file server)
1030 ,@(nnir-read-server-parm 'nnir-swish++-additional-switches server)
1031 ,qstring ; the query, in swish++ format
1035 (message "%s args: %s" nnir-swish++-program
1036 (mapconcat 'identity (cddddr cp-list) " ")) ;; ???
1037 (apply 'call-process cp-list))))
1038 (unless (or (null exitstatus)
1040 (nnheader-report 'nnir "Couldn't run swish++: %s" exitstatus)
1041 ;; swish++ failure reason is in this buffer, show it if
1042 ;; the user wants it.
1043 (when (> gnus-verbose 6)
1044 (display-buffer nnir-tmp-buffer))))
1046 ;; The results are output in the format of:
1048 ;; rank relative-path-name file-size file-title
1050 ;; rank relative-path-name file-size topic??
1051 ;; where rank is an integer from 1 to 100.
1052 (goto-char (point-min))
1053 (while (re-search-forward
1054 "\\(^[0-9]+\\) \\([^ ]+\\) [0-9]+ \\(.*\\)$" nil t)
1055 (setq score (match-string 1)
1056 filenam (match-string 2)
1057 artno (file-name-nondirectory filenam)
1058 dirnam (file-name-directory filenam))
1060 ;; don't match directories
1061 (when (string-match article-pattern artno)
1062 (when (not (null dirnam))
1064 ;; maybe limit results to matching groups.
1065 (when (or (not groupspec)
1066 (string-match groupspec dirnam))
1067 (nnir-add-result dirnam artno score prefix server artlist)))))
1069 (message "Massaging swish++ output...done")
1074 (function (lambda (x y)
1075 (> (nnir-artitem-rsv x)
1076 (nnir-artitem-rsv y)))))))))
1078 ;; Swish-E interface.
1079 (defun nnir-run-swish-e (query server &optional group)
1080 "Run given query against swish-e.
1081 Returns a vector of (group name, file name) pairs (also vectors,
1084 Tested with swish-e-2.0.1 on Windows NT 4.0."
1086 ;; swish-e crashes with empty parameter to "-w" on commandline...
1088 ;; (error "The swish-e backend cannot search specific groups"))
1091 (let ((qstring (cdr (assq 'query query)))
1093 (or (nnir-read-server-parm 'nnir-swish-e-remove-prefix server)
1094 (error "Missing parameter `nnir-swish-e-remove-prefix'")))
1095 artlist score artno dirnam group )
1097 (when (equal "" qstring)
1098 (error "swish-e: You didn't enter anything"))
1100 (set-buffer (get-buffer-create nnir-tmp-buffer))
1103 (message "Doing swish-e query %s..." query)
1105 (or (nnir-read-server-parm
1106 'nnir-swish-e-index-files server)
1107 (error "Missing parameter `nnir-swish-e-index-files'")))
1108 (additional-switches
1109 (nnir-read-server-parm
1110 'nnir-swish-e-additional-switches server))
1111 (cp-list `(,nnir-swish-e-program
1112 nil ; input from /dev/null
1114 nil ; don't redisplay
1116 ,@additional-switches
1118 ,qstring ; the query, in swish-e format
1122 (message "%s args: %s" nnir-swish-e-program
1123 (mapconcat 'identity (cddddr cp-list) " "))
1124 (apply 'call-process cp-list))))
1125 (unless (or (null exitstatus)
1127 (nnheader-report 'nnir "Couldn't run swish-e: %s" exitstatus)
1128 ;; swish-e failure reason is in this buffer, show it if
1129 ;; the user wants it.
1130 (when (> gnus-verbose 6)
1131 (display-buffer nnir-tmp-buffer))))
1133 ;; The results are output in the format of:
1134 ;; rank path-name file-title file-size
1135 (goto-char (point-min))
1136 (while (re-search-forward
1137 "\\(^[0-9]+\\) \\([^ ]+\\) \"\\([^\"]+\\)\" [0-9]+$" nil t)
1138 (setq score (match-string 1)
1139 artno (match-string 3)
1140 dirnam (file-name-directory (match-string 2)))
1142 ;; don't match directories
1143 (when (string-match "^[0-9]+$" artno)
1144 (when (not (null dirnam))
1146 ;; remove nnir-swish-e-remove-prefix from beginning of dirname
1147 (when (string-match (concat "^" prefix) dirnam)
1148 (setq dirnam (replace-match "" t t dirnam)))
1150 (setq dirnam (substring dirnam 0 -1))
1151 ;; eliminate all ".", "/", "\" from beginning. Always matches.
1152 (string-match "^[./\\]*\\(.*\\)$" dirnam)
1154 (setq group (gnus-replace-in-string (match-string 1 dirnam) "/" "."))
1155 ;; Windows "\\" -> "."
1156 (setq group (gnus-replace-in-string group "\\\\" "."))
1158 (push (vector (gnus-group-full-name group server)
1159 (string-to-number artno)
1160 (string-to-number score))
1163 (message "Massaging swish-e output...done")
1168 (function (lambda (x y)
1169 (> (nnir-artitem-rsv x)
1170 (nnir-artitem-rsv y)))))))))
1173 (defun nnir-run-hyrex (query server &optional group)
1176 (groupspec (cdr (assq 'group query)))
1177 (qstring (cdr (assq 'query query)))
1178 (prefix (nnir-read-server-parm 'nnir-hyrex-remove-prefix server))
1180 (when (and (not groupspec) group)
1183 (mapcar (lambda (x) (gnus-group-real-name x)) group))))
1184 (set-buffer (get-buffer-create nnir-tmp-buffer))
1186 (message "Doing hyrex-search query %s..." query)
1188 `( ,nnir-hyrex-program
1189 nil ; input from /dev/null
1191 nil ; don't redisplay
1192 "-i",(nnir-read-server-parm 'nnir-hyrex-index-directory server) ; index directory
1193 ,@(nnir-read-server-parm 'nnir-hyrex-additional-switches server)
1194 ,qstring ; the query, in hyrex-search format
1198 (message "%s args: %s" nnir-hyrex-program
1199 (mapconcat 'identity (cddddr cp-list) " "))
1200 (apply 'call-process cp-list))))
1201 (unless (or (null exitstatus)
1203 (nnheader-report 'nnir "Couldn't run hyrex-search: %s" exitstatus)
1204 ;; nnir-search failure reason is in this buffer, show it if
1205 ;; the user wants it.
1206 (when (> gnus-verbose 6)
1207 (display-buffer nnir-tmp-buffer)))) ;; FIXME: Dont clear buffer !
1208 (message "Doing hyrex-search query \"%s\"...done" qstring)
1210 ;; nnir-search returns:
1211 ;; for nnml/nnfolder: "filename mailid weigth"
1212 ;; for nnimap: "group mailid weigth"
1213 (goto-char (point-min))
1214 (delete-non-matching-lines "^\\S + [0-9]+ [0-9]+$")
1215 ;; HyREX doesn't search directly in groups -- so filter out here.
1217 (keep-lines groupspec))
1218 ;; extract data from result lines
1219 (goto-char (point-min))
1220 (while (re-search-forward
1221 "\\(\\S +\\) \\([0-9]+\\) \\([0-9]+\\)" nil t)
1222 (setq dirnam (match-string 1)
1223 artno (match-string 2)
1224 score (match-string 3))
1225 (when (string-match prefix dirnam)
1226 (setq dirnam (replace-match "" t t dirnam)))
1227 (push (vector (gnus-group-full-name
1228 (gnus-replace-in-string dirnam "/" ".") server)
1229 (string-to-number artno)
1230 (string-to-number score))
1232 (message "Massaging hyrex-search output...done.")
1235 (function (lambda (x y)
1236 (if (string-lessp (nnir-artitem-group x)
1237 (nnir-artitem-group y))
1239 (< (nnir-artitem-number x)
1240 (nnir-artitem-number y)))))))
1244 (defun nnir-run-namazu (query server &optional group)
1245 "Run given query against Namazu. Returns a vector of (group name, file name)
1246 pairs (also vectors, actually).
1248 Tested with Namazu 2.0.6 on a GNU/Linux system."
1250 ;; (error "The Namazu backend cannot search specific groups"))
1252 (let ((article-pattern (if (string= (gnus-group-server server) "nnmaildir")
1256 (qstring (cdr (assq 'query query)))
1257 (prefix (nnir-read-server-parm 'nnir-namazu-remove-prefix server))
1259 (process-environment (copy-sequence process-environment)))
1260 (setenv "LC_MESSAGES" "C")
1261 (set-buffer (get-buffer-create nnir-tmp-buffer))
1264 `( ,nnir-namazu-program
1265 nil ; input from /dev/null
1267 nil ; don't redisplay
1268 "-q" ; don't be verbose
1269 "-a" ; show all matches
1270 "-s" ; use short format
1271 ,@(nnir-read-server-parm 'nnir-namazu-additional-switches server)
1272 ,qstring ; the query, in namazu format
1273 ,(nnir-read-server-parm 'nnir-namazu-index-directory server) ; index directory
1277 (message "%s args: %s" nnir-namazu-program
1278 (mapconcat 'identity (cddddr cp-list) " "))
1279 (apply 'call-process cp-list))))
1280 (unless (or (null exitstatus)
1282 (nnheader-report 'nnir "Couldn't run namazu: %s" exitstatus)
1283 ;; Namazu failure reason is in this buffer, show it if
1284 ;; the user wants it.
1285 (when (> gnus-verbose 6)
1286 (display-buffer nnir-tmp-buffer))))
1288 ;; Namazu output looks something like this:
1289 ;; 2. Re: Gnus agent expire broken (score: 55)
1290 ;; /home/henrik/Mail/mail/sent/1310 (4,138 bytes)
1292 (goto-char (point-min))
1293 (while (re-search-forward
1294 "^\\([0-9]+\\.\\).*\\((score: \\([0-9]+\\)\\))\n\\([^ ]+\\)"
1296 (setq score (match-string 3)
1297 group (file-name-directory (match-string 4))
1298 article (file-name-nondirectory (match-string 4)))
1300 ;; make sure article and group is sane
1301 (when (and (string-match article-pattern article)
1303 (nnir-add-result group article score prefix server artlist)))
1305 ;; sort artlist by score
1308 (function (lambda (x y)
1309 (> (nnir-artitem-rsv x)
1310 (nnir-artitem-rsv y)))))))))
1312 (defun nnir-run-find-grep (query server &optional grouplist)
1313 "Run find and grep to obtain matching articles."
1314 (let* ((method (gnus-server-to-method server))
1316 (concat (symbol-name (car method)) "-directory")))
1317 (directory (cadr (assoc sym (cddr method))))
1318 (regexp (cdr (assoc 'query query)))
1319 (grep-options (cdr (assoc 'grep-options query)))
1320 (grouplist (or grouplist (nnir-get-active server)))
1323 (error "No directory found in method specification of server %s"
1329 (message "Searching %s using find-grep..."
1331 (save-window-excursion
1332 (set-buffer (get-buffer-create nnir-tmp-buffer))
1334 (if (> gnus-verbose 6)
1335 (pop-to-buffer (current-buffer)))
1336 (cd directory) ; Using relative paths simplifies
1341 ;; Try accessing the group literally as
1342 ;; well as interpreting dots as directory
1343 ;; separators so the engine works with
1344 ;; plain nnml as well as the Gnus Cache.
1345 (let ((group (gnus-group-real-name group)))
1346 ;; Replace cl-func find-if.
1347 (if (file-directory-p group)
1349 (if (file-directory-p
1351 (gnus-replace-in-string
1356 (error "Cannot locate directory for group"))
1359 'call-process "find" nil t
1360 "find" group "-type" "f" "-name" "[0-9]*" "-exec"
1362 `("-l" ,@(and grep-options
1363 (split-string grep-options "\\s-" t))
1364 "-e" ,regexp "{}" "+"))))
1366 ;; Translate relative paths to group names.
1368 (let* ((path (split-string
1371 (line-end-position)) "/" t))
1372 (art (string-to-number (car (last path)))))
1373 (while (string= "." (car path))
1374 (setq path (cdr path)))
1375 (let ((group (mapconcat 'identity
1377 ;; (subseq path 0 -1)
1378 (let ((end (1- (length path)))
1381 (>= (setq end (1- end)) 0)
1382 (push (pop path) res))
1386 (vector (gnus-group-full-name group server) art 0)
1389 (message "Searching %s using find-grep...done"
1394 (declare-function mm-url-insert "mm-url" (url &optional follow-refresh))
1395 (declare-function mm-url-encode-www-form-urlencoded "mm-url" (pairs))
1398 (defun nnir-run-gmane (query srv &optional groups)
1399 "Run a search against a gmane back-end server."
1400 (let* ((case-fold-search t)
1401 (qstring (cdr (assq 'query query)))
1402 (server (cadr (gnus-server-to-method srv)))
1403 (groupspec (mapconcat
1405 (if (gnus-string-match-p "gmane" x)
1406 (format "group:%s" (gnus-group-short-name x))
1407 (error "Can't search non-gmane groups: %s" x)))
1410 (if (assq 'author query)
1411 (format "author:%s" (cdr (assq 'author query))) ""))
1412 (search (format "%s %s %s"
1413 qstring groupspec authorspec))
1414 (gnus-inhibit-demon t)
1417 (with-current-buffer (get-buffer-create nnir-tmp-buffer)
1421 "http://search.gmane.org/nov.php"
1423 (mm-url-encode-www-form-urlencoded
1424 `(("query" . ,search)
1425 ("HITSPERPAGE" . "999")))))
1426 (unless (featurep 'xemacs) (set-buffer-multibyte t))
1427 (mm-decode-coding-region (point-min) (point-max) 'utf-8)
1428 (goto-char (point-min))
1431 (unless (or (eolp) (looking-at "\x0d"))
1432 (let ((header (nnheader-parse-nov)))
1433 (let ((xref (mail-header-xref header))
1434 (xscore (string-to-number (cdr (assoc 'X-Score
1435 (mail-header-extra header))))))
1436 (when (string-match " \\([^:]+\\)[:/]\\([0-9]+\\)" xref)
1439 (gnus-group-prefixed-name (match-string 1 xref) srv)
1440 (string-to-number (match-string 2 xref)) xscore)
1443 (apply 'vector (nreverse (mm-delete-duplicates artlist)))))
1447 (defun nnir-read-parms (query nnir-search-engine)
1448 "Reads additional search parameters according to `nnir-engines'."
1449 (let ((parmspec (caddr (assoc nnir-search-engine nnir-engines))))
1451 (mapcar 'nnir-read-parm parmspec))))
1453 (defun nnir-read-parm (parmspec)
1454 "Reads a single search parameter.
1455 `parmspec' is a cons cell, the car is a symbol, the cdr is a prompt."
1456 (let ((sym (car parmspec))
1457 (prompt (cdr parmspec)))
1459 (let* ((result (apply 'gnus-completing-read prompt))
1460 (mapping (or (assoc result nnir-imap-search-arguments)
1461 (cons nil nnir-imap-search-other))))
1462 (cons sym (format (cdr mapping) result)))
1463 (cons sym (read-string prompt)))))
1465 (autoload 'gnus-group-topic-name "gnus-topic")
1467 (defun nnir-run-query (query nserver)
1468 "Invoke appropriate search engine function (see `nnir-engines').
1469 If some groups were process-marked, run the query for each of the groups
1470 and concat the results."
1471 (let ((q (car (read-from-string query)))
1472 (groups (if (string= "all-ephemeral" nserver)
1473 (with-current-buffer gnus-server-buffer
1474 (list (list (gnus-server-server-name))))
1476 (or gnus-group-marked
1477 (if (gnus-group-group-name)
1478 (list (gnus-group-group-name))
1479 (cdr (assoc (gnus-group-topic-name)
1480 gnus-topic-alist))))
1481 gnus-group-server))))
1485 (let* ((server (car x))
1487 (or (nnir-read-server-parm 'nnir-search-engine
1490 (gnus-server-to-method server))
1491 nnir-method-default-engines))))
1493 (setq search-func (cadr (assoc nnir-search-engine
1496 (funcall search-func
1497 (if nnir-extra-parms
1498 (nnir-read-parms q nnir-search-engine)
1504 (defun nnir-read-server-parm (key server)
1505 "Returns the parameter value of key for the given server, where
1506 server is of form 'backend:name'."
1507 (let ((method (gnus-server-to-method server)))
1508 (cond ((and method (assq key (cddr method)))
1509 (nth 1 (assq key (cddr method))))
1512 (defun nnir-possibly-change-server (server)
1513 (unless (and server (nnir-server-opened server))
1514 (nnir-open-server server)))
1519 (defun nnir-artlist-groups (artlist)
1520 "Returns a list of all groups in the given ARTLIST."
1523 ;; from each artitem, extract group component
1524 (setq with-dups (mapcar 'nnir-artitem-group artlist))
1525 ;; remove duplicates from above
1526 (mapc (function (lambda (x) (add-to-list 'res x)))
1530 (defun nnir-get-active (srv)
1531 (let ((method (gnus-server-to-method srv))
1533 (gnus-request-list method)
1534 (with-current-buffer nntp-server-buffer
1535 (let ((cur (current-buffer))
1537 (goto-char (point-min))
1538 (unless (string= nnir-ignored-newsgroups "")
1539 (delete-matching-lines nnir-ignored-newsgroups))
1540 (if (eq (car method) 'nntp)
1543 (push (mm-string-as-unibyte
1544 (gnus-group-full-name
1548 (skip-chars-forward "^ \t")
1554 (push (mm-string-as-unibyte
1555 (if (eq (char-after) ?\")
1556 (gnus-group-full-name (read cur) method)
1557 (let ((p (point)) (name ""))
1558 (skip-chars-forward "^ \t\\\\")
1559 (setq name (buffer-substring p (point)))
1560 (while (eq (char-after) ?\\)
1561 (setq p (1+ (point)))
1563 (skip-chars-forward "^ \t\\\\")
1564 (setq name (concat name (buffer-substring
1566 (gnus-group-full-name name method))))
1571 (defun nnir-registry-action (action data-header from &optional to method)
1572 "Call `gnus-registry-action' with the original article group."
1573 (gnus-registry-action
1576 (nnir-article-group (mail-header-number data-header))
1581 (when (eq (car (gnus-find-method-for-group gnus-newsgroup-name)) 'nnir)
1582 (setq gnus-summary-line-format
1583 (or nnir-summary-line-format gnus-summary-line-format))
1584 (remove-hook 'gnus-summary-article-delete-hook 'gnus-registry-action t)
1585 (remove-hook 'gnus-summary-article-move-hook 'gnus-registry-action t)
1586 (remove-hook 'gnus-summary-article-expire-hook 'gnus-registry-action t)
1587 (add-hook 'gnus-summary-article-delete-hook 'nnir-registry-action t t)
1588 (add-hook 'gnus-summary-article-move-hook 'nnir-registry-action t t)
1589 (add-hook 'gnus-summary-article-expire-hook 'nnir-registry-action t t)))
1596 ;;; nnir.el ends here