1 ;;; gnus-namazu.el --- Search mail with Namazu.
3 ;; Copyright (C) 2000,2001 Tsuchiya Masatoshi <tsuchiya@namazu.org>
5 ;; Author: Tsuchiya Masatoshi <tsuchiya@namazu.org>
6 ;; Keywords: mail searching namazu
10 ;; This file is a part of Semi-Gnus.
12 ;; This program is free software; you can redistribute it and/or modify
13 ;; it under the terms of the GNU General Public License as published by
14 ;; the Free Software Foundation; either version 2, or (at your option)
17 ;; This program is distributed in the hope that it will be useful,
18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ;; GNU General Public License for more details.
22 ;; You should have received a copy of the GNU General Public License
23 ;; along with this program; if not, you can either send email to this
24 ;; program's maintainer or write to: The Free Software Foundation,
25 ;; Inc.; 59 Temple Place, Suite 330; Boston, MA 02111-1307, USA.
30 ;; This file defines the command to search mails with Namazu and
31 ;; browse its results with Gnus. This module requires the external
32 ;; command Namazu. Visit the following page for more information.
39 ;; Make index of articles with Namzu before using this module.
41 ;; % mkdir ~/News/namazu
42 ;; % mknmz -a -h -O ~/News/namazu ~/Mail
44 ;; When you put index files of Namazu into the directory other than
45 ;; the default one (~/News/namazu), it is necessary to put this
46 ;; expression to your ~/.gnus, in order to set the path of index files
47 ;; to `gnus-namazu-index-directories'.
49 ;; (setq gnus-namazu-index-directories
50 ;; (list (expand-file-name "~/namazu")))
52 ;; If you would like to use this module in Gnus (not T-gnus), put this
53 ;; file into the lisp/ directory in the Gnus source tree and run `make
54 ;; install'. And then, put the following expressions into your ~/.gnus.
56 ;; (require 'gnus-namazu)
57 ;; (gnus-namazu-insinuate)
62 ;; In group buffer or in summary buffer, type C-c C-n query RET.
67 (eval-when-compile (require 'cl))
73 ;; It is required for Mule 2.3. See the file Mule23@1934.en.
75 (autoload 'regexp-opt "regexp-opt"))
77 ;; To suppress byte-compile warning.
79 (defvar nnml-directory)
80 (defvar nnml-group-alist)
81 (defvar nnmh-directory)
82 (defvar nnmh-group-alist))
85 (defgroup gnus-namazu nil
86 "Search nnmh and nnml groups in Gnus with Namazu."
89 :prefix "gnus-namazu-")
91 (defcustom gnus-namazu-index-directories
93 (or (and (boundp 'gnus-namazu-index-directory)
94 (symbol-value 'gnus-namazu-index-directory))
95 (and (boundp 'nnir-namazu-index-directory)
96 (symbol-value 'nnir-namazu-index-directory))
97 (expand-file-name "namazu" gnus-directory)))
98 "*Index directory of Namazu."
99 :type '(repeat directory)
102 (defcustom gnus-namazu-command
103 (or (and (boundp 'namazu-command)
104 (symbol-value 'namazu-command))
105 (and (boundp 'nnir-namazu-program)
106 (symbol-value 'nnir-namazu-program))
108 "*Name of the executable file of Namazu."
112 (defcustom gnus-namazu-additional-arguments nil
113 "*Additional arguments of Namazu.
114 The options `-q', `-a', and `-l' are always used, very few other
115 options make any sense in this context."
116 :type '(repeat string)
119 (defcustom gnus-namazu-field-keywords
120 '("date" "from" "newsgroups" "size" "subject" "summary" "to" "uri")
121 "*List of keywords to do field-search."
122 :type '(repeat string)
125 (defcustom gnus-namazu-coding-system
126 (if (memq system-type '(windows-nt OS/2 emx))
127 (if (boundp 'MULE) '*sjis* 'shift_jis)
128 (if (boundp 'MULE) '*euc-japan* 'euc-japan))
129 "*Coding system for Namazu process."
133 (defcustom gnus-namazu-need-path-normalization
134 (eq system-type 'windows-nt)
135 "*Non-nil means that outputs of namazu may contain a not normalized path."
139 (defcustom gnus-namazu-case-sensitive-filesystem
140 (not (eq system-type 'windows-nt))
141 "*Non-nil means that the using file system distinguishes cases of characters."
146 ;;; Internal Variable:
147 (defvar gnus-namazu/group-alist nil
148 "Associative list to map groups in lower case to official names.")
149 (defconst gnus-namazu/group-name-regexp "\\`nnvirtual:namazu-search\\?")
151 ;; Multibyte group name:
153 (fboundp 'gnus-group-decoded-name)
154 (let ((gnus-group-name-charset-group-alist
155 (list (cons gnus-namazu/group-name-regexp gnus-namazu-coding-system)))
156 (query (decode-coding-string
157 (string 27 36 66 52 65 59 122 27 40 66)
158 (if (boundp 'MULE) '*iso-2022-jp* 'iso-2022-7bit))))
159 (not (string-match query
160 (gnus-summary-buffer-name
161 (encode-coding-string
162 (concat "nnvirtual:namazu-search?query=" query)
163 gnus-namazu-coding-system)))))
164 (let (current-load-list)
165 (defadvice gnus-summary-buffer-name
166 (before gnus-namazu-summary-buffer-name activate compile)
167 "Advised by `gnus-namazu' to handle encoded group names."
168 (ad-set-arg 0 (gnus-group-decoded-name (ad-get-arg 0))))))
170 (defmacro gnus-namazu/make-article (group number)
171 `(cons ,group ,number))
172 (defmacro gnus-namazu/article-group (x) `(car ,x))
173 (defmacro gnus-namazu/article-number (x) `(cdr ,x))
175 (defsubst gnus-namazu/indexed-servers ()
176 "Choice appropriate servers from opened ones, and return thier list."
178 (gnus-servers-using-backend 'nnml)
179 (gnus-servers-using-backend 'nnmh)))
181 (defun gnus-namazu/setup ()
182 (and (boundp 'gnus-group-name-charset-group-alist)
183 (not (member (cons gnus-namazu/group-name-regexp
184 gnus-namazu-coding-system)
185 gnus-group-name-charset-group-alist))
186 (let ((pair (assoc gnus-namazu/group-name-regexp
187 gnus-group-name-charset-group-alist)))
189 (setcdr pair gnus-namazu-coding-system)
190 (push (cons gnus-namazu/group-name-regexp
191 gnus-namazu-coding-system)
192 gnus-group-name-charset-group-alist))))
193 (unless gnus-namazu-case-sensitive-filesystem
194 ;; FIXME: The alist to map group names in lower case to real names
195 ;; is reconstructed every when gnus-namazu/setup() is called.
196 ;; This reconstruction make gnus-namazu-search() slow.
197 (setq gnus-namazu/group-alist nil)
198 (dolist (server (gnus-namazu/indexed-servers))
199 (dolist (group (gnus-namazu/request-list server))
200 (let ((name (gnus-group-prefixed-name group server)))
201 (unless (assoc name gnus-namazu/group-alist)
202 (push (cons (downcase name) name) gnus-namazu/group-alist)))))))
204 (defun gnus-namazu/shutdown ()
205 (setq gnus-namazu/group-alist nil))
206 (add-hook 'gnus-exit-gnus-hook 'gnus-namazu/shutdown)
208 (defun gnus-namazu/request-list (server)
209 "Return groups of the server SERVER."
210 (and (memq (car server) '(nnml nnmh))
211 (nnoo-change-server (car server) (nth 1 server) (nthcdr 2 server))
212 (gnus-request-list server)
213 (mapcar (function car)
214 (if (eq 'nnml (car server))
218 (defun gnus-namazu/server-directory (server)
219 "Return the top directory of the server SERVER."
220 (and (memq (car server) '(nnml nnmh))
221 (nnoo-change-server (car server) (nth 1 server) (nthcdr 2 server))
222 (file-name-as-directory
223 (expand-file-name (if (eq 'nnml (car server))
227 ;;; Functions to call Namazu.
228 (defsubst gnus-namazu/normalize-results ()
229 "Normalize file names returned by Namazu in this current buffer."
230 (goto-char (point-min))
232 (when (if gnus-namazu-need-path-normalization
233 (or (not (looking-at "/\\(.\\)|/"))
234 (replace-match "\\1:/"))
235 (eq ?~ (char-after (point))))
236 (insert (expand-file-name
237 (buffer-substring (gnus-point-at-bol) (gnus-point-at-eol))))
238 (delete-region (point) (gnus-point-at-eol)))
241 (defsubst gnus-namazu/call-namazu (query)
242 (let ((coding-system-for-read gnus-namazu-coding-system)
243 (coding-system-for-write gnus-namazu-coding-system)
244 (default-process-coding-system
245 (cons gnus-namazu-coding-system gnus-namazu-coding-system))
246 (file-name-coding-system gnus-namazu-coding-system)
247 (pathname-coding-system gnus-namazu-coding-system))
249 `(,gnus-namazu-command
250 nil ; input from /dev/null
252 nil ; don't redisplay
253 "-q" ; don't be verbose
254 "-a" ; show all matches
255 "-l" ; use list format
256 ,@gnus-namazu-additional-arguments
258 ,@gnus-namazu-index-directories))))
260 (defsubst gnus-namazu/group-prefixed-name (group method)
261 "Return the whole name from GROUP and METHOD."
262 (if gnus-namazu-case-sensitive-filesystem
263 (gnus-group-prefixed-name group method)
264 (let ((name (gnus-group-prefixed-name group method)))
265 (or (cdr (assoc (downcase name) gnus-namazu/group-alist))
268 (defun gnus-namazu/search (groups query)
270 (let ((exit-status (gnus-namazu/call-namazu query)))
271 (unless (zerop exit-status)
272 (error "Namazu finished abnormally: %d" exit-status))
279 (when (setq dir (gnus-namazu/server-directory s))
280 (cons (file-name-as-directory dir) s)))
281 (gnus-namazu/indexed-servers)))))
282 (topdir-regexp (regexp-opt (mapcar 'car server-alist))))
283 (gnus-namazu/normalize-results)
284 (goto-char (point-min))
286 (let (server group file)
287 (and (looking-at topdir-regexp)
288 ;; Check a discovered file is managed by Gnus servers.
289 (setq file (buffer-substring-no-properties
290 (match-end 0) (gnus-point-at-eol))
291 server (cdr (assoc (match-string-no-properties 0)
293 ;; Check validity of the file name.
294 (string-match "/\\([0-9]+\\)\\'" file)
296 (setq group (substring file 0 (match-beginning 0))
297 file (match-string 1 file))
299 (gnus-namazu/group-prefixed-name
300 (nnheader-replace-chars-in-string group ?/ ?.)
302 (when (or (not groups)
303 (member group groups))
304 (push (gnus-namazu/make-article
305 group (string-to-number file))
308 (nreverse articles)))))
312 (defun gnus-namazu/get-target-groups ()
314 ((eq major-mode 'gnus-group-mode)
318 (gnus-group-process-prefix current-prefix-arg))
320 (prog1 gnus-group-marked (gnus-group-unmark-all-groups)))))
321 ((eq major-mode 'gnus-summary-mode)
322 ;; In Summary buffer.
323 (if current-prefix-arg
324 (list (gnus-read-group "Group: "))
325 (if (and (gnus-ephemeral-group-p gnus-newsgroup-name)
326 (string-match gnus-namazu/group-name-regexp gnus-newsgroup-name))
327 (cadr (assq 'gnus-namazu-target-groups
328 (gnus-info-method (gnus-get-info gnus-newsgroup-name))))
329 (list gnus-newsgroup-name))))))
331 (defun gnus-namazu/get-current-query ()
332 (and (eq major-mode 'gnus-summary-mode)
333 (gnus-ephemeral-group-p gnus-newsgroup-name)
334 (string-match gnus-namazu/group-name-regexp gnus-newsgroup-name)
335 (cadr (assq 'gnus-namazu-current-query
336 (gnus-info-method (gnus-get-info gnus-newsgroup-name))))))
338 (defvar gnus-namazu/read-query-original-buffer nil)
339 (defvar gnus-namazu/read-query-prompt nil)
340 (defvar gnus-namazu/read-query-history nil)
342 (defun gnus-namazu/get-current-subject ()
343 (and gnus-namazu/read-query-original-buffer
344 (bufferp gnus-namazu/read-query-original-buffer)
345 (with-current-buffer gnus-namazu/read-query-original-buffer
346 (when (eq major-mode 'gnus-summary-mode)
347 (let ((s (gnus-summary-article-subject)))
348 ;; Remove typically prefixes of mailing lists.
350 "^\\(\\[[^]]*[0-9]+\\]\\|([^)]*[0-9]+)\\)\\s-*" s)
351 (setq s (substring s (match-end 0))))
353 "^\\(Re\\(\\^?\\([0-9]+\\|\\[[0-9]+\\]\\)\\)?:\\s-*\\)+" s)
354 (setq s (substring s (match-end 0))))
355 (when (string-match "\\s-*(\\(re\\|was\\)\\b" s)
356 (setq s (substring s 0 (match-beginning 0))))
359 (defun gnus-namazu/get-current-from ()
360 (and gnus-namazu/read-query-original-buffer
361 (bufferp gnus-namazu/read-query-original-buffer)
362 (with-current-buffer gnus-namazu/read-query-original-buffer
363 (when (eq major-mode 'gnus-summary-mode)
364 (cadr (mail-extract-address-components
366 (gnus-summary-article-header))))))))
368 (defmacro gnus-namazu/minibuffer-prompt-end ()
369 (if (fboundp 'minibuffer-prompt-end)
370 '(minibuffer-prompt-end)
373 (defun gnus-namazu/message (string &rest arguments)
375 gnus-namazu/read-query-prompt
376 (buffer-substring (gnus-namazu/minibuffer-prompt-end)
378 (s2 (apply (function format) string arguments))
383 (message (if (>= w 0)
384 (concat s1 (make-string w ?\ ) s2)
386 (if (sit-for 0.3) (message s1))
389 (defun gnus-namazu/complete-query ()
393 ((and (re-search-backward "\\+\\([a-z]*\\)" nil t)
394 (= pos (match-end 0)))
395 (let* ((partial (match-string 1))
399 (mapcar 'list gnus-namazu-field-keywords))))
402 (gnus-namazu/message "No completions of %s" partial))
403 ((= 1 (length completions))
404 (goto-char (match-beginning 1))
405 (delete-region (match-beginning 1) (match-end 1))
406 (insert (car completions) ":")
408 (gnus-namazu/message "Completed"))
410 (let ((x (try-completion partial (mapcar 'list completions))))
411 (if (string= x partial)
412 (if (and (eq last-command
413 'gnus-namazu/field-keyword-completion)
414 completion-auto-help)
415 (with-output-to-temp-buffer "*Completions*"
416 (display-completion-list completions))
417 (gnus-namazu/message "Sole completion"))
418 (goto-char (match-beginning 1))
419 (delete-region (match-beginning 1) (match-end 1))
421 (setq pos (point))))))))
422 ((and (looking-at "\\+subject:")
423 (= pos (match-end 0)))
424 (let ((s (gnus-namazu/get-current-subject)))
428 (setq pos (point)))))
429 ((and (looking-at "\\+from:")
430 (= pos (match-end 0)))
431 (let ((f (gnus-namazu/get-current-from)))
435 (setq pos (point))))))
438 (defvar gnus-namazu/read-query-map
439 (let ((keymap (copy-keymap minibuffer-local-map)))
440 (define-key keymap "\t" 'gnus-namazu/complete-query)
443 (defun gnus-namazu/read-query (prompt &optional initial)
444 (let ((gnus-namazu/read-query-original-buffer (current-buffer))
445 (gnus-namazu/read-query-prompt prompt))
447 (when (setq initial (gnus-namazu/get-current-query))
448 (setq initial (cons initial 0))))
449 (read-from-minibuffer prompt initial gnus-namazu/read-query-map nil
450 'gnus-namazu/read-query-history)))
452 (defun gnus-namazu/truncate-article-list (articles)
453 (let ((hit (length articles)))
454 (when (> hit gnus-large-newsgroup)
455 (let* ((cursor-in-echo-area nil)
457 (when (> hit gnus-large-newsgroup)
458 (read-from-minibuffer
460 "Too many articles were retrieved. How many articles (max %d): "
462 (cons (number-to-string gnus-large-newsgroup) 0)))))
463 (unless (string-match "\\`[ \t]*\\'" input)
464 (setcdr (nthcdr (min (1- (string-to-number input)) hit) articles)
469 (defun gnus-namazu-search (groups query)
470 "Search QUERY through GROUPS with Namazu,
471 and make a virtual group contains its results."
474 (gnus-namazu/get-target-groups)
475 (gnus-namazu/read-query "Enter query: ")))
477 (let ((articles (gnus-namazu/search groups query)))
479 (let ((real-groups groups)
481 (apply (function format)
482 "nnvirtual:namazu-search?query=%s&groups=%s&id=%d%d%d"
484 (if groups (mapconcat 'identity groups ",") "ALL")
486 (gnus-namazu/truncate-article-list articles)
489 (add-to-list 'real-groups (gnus-namazu/article-group a))))
490 ;; Generate virtual group which includes all results.
491 (when (fboundp 'gnus-group-decoded-name)
493 (encode-coding-string vgroup gnus-namazu-coding-system)))
495 (gnus-group-read-ephemeral-group
498 (nnvirtual-component-groups ,real-groups)
499 (gnus-namazu-target-groups ,groups)
500 (gnus-namazu-current-query ,query))
501 t (cons (current-buffer) (current-window-configuration)) t))
502 ;; Generate new summary buffer which contains search results.
503 (gnus-group-read-group
505 (sort (delq nil ;; Ad-hoc fix, to avoid wrong-type-argument error.
508 (nnvirtual-reverse-map-article
509 (gnus-namazu/article-group a)
510 (gnus-namazu/article-number a)))
513 (message "No entry."))))
515 (defun gnus-namazu-insinuate ()
517 'gnus-group-mode-hook
519 (define-key gnus-group-mode-map "\C-c\C-n" 'gnus-namazu-search)))
521 'gnus-summary-mode-hook
523 (define-key gnus-summary-mode-map "\C-c\C-n" 'gnus-namazu-search))))
525 (provide 'gnus-namazu)
527 ;; gnus-namazu.el ends here.