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:
152 (add-to-list 'gnus-group-name-charset-group-alist
153 (cons gnus-namazu/group-name-regexp gnus-namazu-coding-system))
155 (fboundp 'gnus-group-decoded-name)
157 (concat "nnvirtual:namazu-search?query="
158 (decode-coding-string
159 (string 27 36 66 52 65 59 122 27 40 66)
160 (if (boundp 'MULE) '*iso-2022-jp* 'iso-2022-7bit)))))
161 (/= (length (string-to-char-list (concat "*Summary " group "*")))
164 (gnus-summary-buffer-name
165 (encode-coding-string group gnus-namazu-coding-system))))))
166 (let (current-load-list)
167 (defadvice gnus-summary-buffer-name
168 (before gnus-namazu-summary-buffer-name activate compile)
169 "Advised by `gnus-namazu' to handle encoded group names."
170 (ad-set-arg 0 (gnus-group-decoded-name (ad-get-arg 0))))))
172 (defmacro gnus-namazu/make-article (group number)
173 `(cons ,group ,number))
174 (defmacro gnus-namazu/article-group (x) `(car ,x))
175 (defmacro gnus-namazu/article-number (x) `(cdr ,x))
177 (defsubst gnus-namazu/indexed-servers ()
178 "Choice appropriate servers from opened ones, and return thier list."
180 (gnus-servers-using-backend 'nnml)
181 (gnus-servers-using-backend 'nnmh)))
183 (defun gnus-namazu/setup ()
184 (unless gnus-namazu-case-sensitive-filesystem
185 ;; FIXME: The alist to map group names in lower case to real names
186 ;; is reconstructed every when gnus-namazu/setup() is called.
187 ;; This reconstruction make gnus-namazu-search() slow.
188 (setq gnus-namazu/group-alist nil)
189 (dolist (server (gnus-namazu/indexed-servers))
190 (dolist (group (gnus-namazu/request-list server))
191 (let ((name (gnus-group-prefixed-name group server)))
192 (unless (assoc name gnus-namazu/group-alist)
193 (push (cons (downcase name) name) gnus-namazu/group-alist)))))))
195 (defun gnus-namazu/shutdown ()
196 (setq gnus-namazu/group-alist nil))
197 (add-hook 'gnus-exit-gnus-hook 'gnus-namazu/shutdown)
199 (defun gnus-namazu/request-list (server)
200 "Return groups of the server SERVER."
201 (and (memq (car server) '(nnml nnmh))
202 (nnoo-change-server (car server) (nth 1 server) (nthcdr 2 server))
203 (gnus-request-list server)
204 (mapcar (function car)
205 (if (eq 'nnml (car server))
209 (defun gnus-namazu/server-directory (server)
210 "Return the top directory of the server SERVER."
211 (and (memq (car server) '(nnml nnmh))
212 (nnoo-change-server (car server) (nth 1 server) (nthcdr 2 server))
213 (file-name-as-directory
214 (expand-file-name (if (eq 'nnml (car server))
218 ;;; Functions to call Namazu.
219 (defsubst gnus-namazu/normalize-results ()
220 "Normalize file names returned by Namazu in this current buffer."
221 (goto-char (point-min))
223 (when (if gnus-namazu-need-path-normalization
224 (or (not (looking-at "/\\(.\\)|/"))
225 (replace-match "\\1:/"))
226 (eq ?~ (char-after (point))))
227 (insert (expand-file-name
228 (buffer-substring (gnus-point-at-bol) (gnus-point-at-eol))))
229 (delete-region (point) (gnus-point-at-eol)))
232 (defsubst gnus-namazu/call-namazu (query)
233 (let ((coding-system-for-read gnus-namazu-coding-system)
234 (coding-system-for-write gnus-namazu-coding-system)
235 (default-process-coding-system
236 (cons gnus-namazu-coding-system gnus-namazu-coding-system))
237 (file-name-coding-system gnus-namazu-coding-system)
238 (pathname-coding-system gnus-namazu-coding-system))
240 `(,gnus-namazu-command
241 nil ; input from /dev/null
243 nil ; don't redisplay
244 "-q" ; don't be verbose
245 "-a" ; show all matches
246 "-l" ; use list format
247 ,@gnus-namazu-additional-arguments
249 ,@gnus-namazu-index-directories))))
251 (defsubst gnus-namazu/group-prefixed-name (group method)
252 "Return the whole name from GROUP and METHOD."
253 (if gnus-namazu-case-sensitive-filesystem
254 (gnus-group-prefixed-name group method)
255 (let ((name (gnus-group-prefixed-name group method)))
256 (or (cdr (assoc (downcase name) gnus-namazu/group-alist))
259 (defun gnus-namazu/search (groups query)
261 (let ((exit-status (gnus-namazu/call-namazu query)))
262 (unless (zerop exit-status)
263 (error "Namazu finished abnormally: %d" exit-status))
270 (when (setq dir (gnus-namazu/server-directory s))
271 (cons (file-name-as-directory dir) s)))
272 (gnus-namazu/indexed-servers)))))
273 (topdir-regexp (regexp-opt (mapcar 'car server-alist))))
274 (gnus-namazu/normalize-results)
275 (goto-char (point-min))
277 (let (server group file)
278 (and (looking-at topdir-regexp)
279 ;; Check a discovered file is managed by Gnus servers.
280 (setq file (buffer-substring-no-properties
281 (match-end 0) (gnus-point-at-eol))
282 server (cdr (assoc (match-string-no-properties 0)
284 ;; Check validity of the file name.
285 (string-match "/\\([0-9]+\\)\\'" file)
287 (setq group (substring file 0 (match-beginning 0))
288 file (match-string 1 file))
290 (gnus-namazu/group-prefixed-name
291 (nnheader-replace-chars-in-string group ?/ ?.)
293 (when (or (not groups)
294 (member group groups))
295 (push (gnus-namazu/make-article
296 group (string-to-number file))
299 (nreverse articles)))))
303 (defun gnus-namazu/get-target-groups ()
305 ((eq major-mode 'gnus-group-mode)
309 (gnus-group-process-prefix current-prefix-arg))
311 (prog1 gnus-group-marked (gnus-group-unmark-all-groups)))))
312 ((eq major-mode 'gnus-summary-mode)
313 ;; In Summary buffer.
314 (if current-prefix-arg
315 (list (gnus-read-group "Group: "))
316 (if (and (gnus-ephemeral-group-p gnus-newsgroup-name)
317 (string-match gnus-namazu/group-name-regexp gnus-newsgroup-name))
318 (cadr (assq 'gnus-namazu-target-groups
319 (gnus-info-method (gnus-get-info gnus-newsgroup-name))))
320 (list gnus-newsgroup-name))))))
322 (defun gnus-namazu/get-current-query ()
323 (and (eq major-mode 'gnus-summary-mode)
324 (gnus-ephemeral-group-p gnus-newsgroup-name)
325 (string-match gnus-namazu/group-name-regexp gnus-newsgroup-name)
326 (cadr (assq 'gnus-namazu-current-query
327 (gnus-info-method (gnus-get-info gnus-newsgroup-name))))))
329 (defvar gnus-namazu/read-query-original-buffer nil)
330 (defvar gnus-namazu/read-query-prompt nil)
331 (defvar gnus-namazu/read-query-history nil)
333 (defun gnus-namazu/get-current-subject ()
334 (and gnus-namazu/read-query-original-buffer
335 (bufferp gnus-namazu/read-query-original-buffer)
336 (with-current-buffer gnus-namazu/read-query-original-buffer
337 (when (eq major-mode 'gnus-summary-mode)
338 (let ((s (gnus-summary-article-subject)))
339 ;; Remove typically prefixes of mailing lists.
341 "^\\(\\[[^]]*[0-9]+\\]\\|([^)]*[0-9]+)\\)\\s-*" s)
342 (setq s (substring s (match-end 0))))
344 "^\\(Re\\(\\^?\\([0-9]+\\|\\[[0-9]+\\]\\)\\)?:\\s-*\\)+" s)
345 (setq s (substring s (match-end 0))))
346 (when (string-match "\\s-*(\\(re\\|was\\)\\b" s)
347 (setq s (substring s 0 (match-beginning 0))))
350 (defun gnus-namazu/get-current-from ()
351 (and gnus-namazu/read-query-original-buffer
352 (bufferp gnus-namazu/read-query-original-buffer)
353 (with-current-buffer gnus-namazu/read-query-original-buffer
354 (when (eq major-mode 'gnus-summary-mode)
355 (cadr (mail-extract-address-components
357 (gnus-summary-article-header))))))))
359 (defmacro gnus-namazu/minibuffer-prompt-end ()
360 (if (fboundp 'minibuffer-prompt-end)
361 '(minibuffer-prompt-end)
364 (defun gnus-namazu/message (string &rest arguments)
366 gnus-namazu/read-query-prompt
367 (buffer-substring (gnus-namazu/minibuffer-prompt-end)
369 (s2 (apply (function format) string arguments))
374 (message (if (>= w 0)
375 (concat s1 (make-string w ?\ ) s2)
377 (if (sit-for 0.3) (message s1))
380 (defun gnus-namazu/complete-query ()
384 ((and (re-search-backward "\\+\\([a-z]*\\)" nil t)
385 (= pos (match-end 0)))
386 (let* ((partial (match-string 1))
390 (mapcar 'list gnus-namazu-field-keywords))))
393 (gnus-namazu/message "No completions of %s" partial))
394 ((= 1 (length completions))
395 (goto-char (match-beginning 1))
396 (delete-region (match-beginning 1) (match-end 1))
397 (insert (car completions) ":")
399 (gnus-namazu/message "Completed"))
401 (let ((x (try-completion partial (mapcar 'list completions))))
402 (if (string= x partial)
403 (if (and (eq last-command
404 'gnus-namazu/field-keyword-completion)
405 completion-auto-help)
406 (with-output-to-temp-buffer "*Completions*"
407 (display-completion-list completions))
408 (gnus-namazu/message "Sole completion"))
409 (goto-char (match-beginning 1))
410 (delete-region (match-beginning 1) (match-end 1))
412 (setq pos (point))))))))
413 ((and (looking-at "\\+subject:")
414 (= pos (match-end 0)))
415 (let ((s (gnus-namazu/get-current-subject)))
419 (setq pos (point)))))
420 ((and (looking-at "\\+from:")
421 (= pos (match-end 0)))
422 (let ((f (gnus-namazu/get-current-from)))
426 (setq pos (point))))))
429 (defvar gnus-namazu/read-query-map
430 (let ((keymap (copy-keymap minibuffer-local-map)))
431 (define-key keymap "\t" 'gnus-namazu/complete-query)
434 (defun gnus-namazu/read-query (prompt &optional initial)
435 (let ((gnus-namazu/read-query-original-buffer (current-buffer))
436 (gnus-namazu/read-query-prompt prompt))
438 (when (setq initial (gnus-namazu/get-current-query))
439 (setq initial (cons initial 0))))
440 (read-from-minibuffer prompt initial gnus-namazu/read-query-map nil
441 'gnus-namazu/read-query-history)))
443 (defun gnus-namazu/truncate-article-list (articles)
444 (let ((hit (length articles)))
445 (when (> hit gnus-large-newsgroup)
446 (let* ((cursor-in-echo-area nil)
448 (when (> hit gnus-large-newsgroup)
449 (read-from-minibuffer
451 "Too many articles were retrieved. How many articles (max %d): "
453 (cons (number-to-string gnus-large-newsgroup) 0)))))
454 (unless (string-match "\\`[ \t]*\\'" input)
455 (setcdr (nthcdr (min (1- (string-to-number input)) hit) articles)
460 (defun gnus-namazu-search (groups query)
461 "Search QUERY through GROUPS with Namazu,
462 and make a virtual group contains its results."
465 (gnus-namazu/get-target-groups)
466 (gnus-namazu/read-query "Enter query: ")))
468 (let ((articles (gnus-namazu/search groups query)))
470 (let ((real-groups groups)
472 (apply (function format)
473 "nnvirtual:namazu-search?query=%s&groups=%s&id=%d%d%d"
475 (if groups (mapconcat 'identity groups ",") "ALL")
477 (gnus-namazu/truncate-article-list articles)
480 (add-to-list 'real-groups (gnus-namazu/article-group a))))
481 ;; Generate virtual group which includes all results.
482 (when (fboundp 'gnus-group-decoded-name)
484 (encode-coding-string vgroup gnus-namazu-coding-system)))
486 (gnus-group-read-ephemeral-group
489 (nnvirtual-component-groups ,real-groups)
490 (gnus-namazu-target-groups ,groups)
491 (gnus-namazu-current-query ,query))
492 t (cons (current-buffer) (current-window-configuration)) t))
493 ;; Generate new summary buffer which contains search results.
494 (gnus-group-read-group
496 (sort (delq nil ;; Ad-hoc fix, to avoid wrong-type-argument error.
499 (nnvirtual-reverse-map-article
500 (gnus-namazu/article-group a)
501 (gnus-namazu/article-number a)))
504 (message "No entry."))))
506 (defun gnus-namazu-insinuate ()
508 'gnus-group-mode-hook
510 (define-key gnus-group-mode-map "\C-c\C-n" 'gnus-namazu-search)))
512 'gnus-summary-mode-hook
514 (define-key gnus-summary-mode-map "\C-c\C-n" 'gnus-namazu-search))))
516 (provide 'gnus-namazu)
518 ;; gnus-namazu.el ends here.