From 79852e056de4179f9bb7c5621e04d8d37d7cac11 Mon Sep 17 00:00:00 2001
From: tsuchiya <tsuchiya>
Date: Mon, 10 Sep 2001 02:18:51 +0000
Subject: [PATCH] * lisp/gnus-namazu.el: New file.

* lisp/gnus.el (top): Add autoload of `gnus-namazu-search'.

* lisp/gnus-sum.el (gnus-summary-mode-map): Define "\C-c\C-n" as
`gnus-namazu-search'.

* lisp/gnus-group.el (gnus-group-mode-map): Define "\C-c\C-n" as
`gnus-namazu-search', and removed `gnus-group-make-shimbun-group'.
---
 ChangeLog           |   12 ++
 lisp/gnus-group.el  |    2 +-
 lisp/gnus-namazu.el |  439 +++++++++++++++++++++++++++++++++++++++++++++++++++
 lisp/gnus-sum.el    |    1 +
 lisp/gnus.el        |    3 +
 5 files changed, 456 insertions(+), 1 deletion(-)
 create mode 100644 lisp/gnus-namazu.el

diff --git a/ChangeLog b/ChangeLog
index dbef953..455f861 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,15 @@
+2001-09-10  TSUCHIYA Masatoshi  <tsuchiya@namazu.org>
+
+	* lisp/gnus-namazu.el: New file.
+
+	* lisp/gnus.el (top): Add autoload of `gnus-namazu-search'.
+
+	* lisp/gnus-sum.el (gnus-summary-mode-map): Define "\C-c\C-n" as
+	`gnus-namazu-search'.
+
+	* lisp/gnus-group.el (gnus-group-mode-map): Define "\C-c\C-n" as
+	`gnus-namazu-search', and removed `gnus-group-make-shimbun-group'.
+
 2001-09-10  Katsumi Yamaoka  <yamaoka@jpl.org>
 
 	* lisp/gnus-xmas.el (gnus-tilde-pad-form): Abolished.  Use the
diff --git a/lisp/gnus-group.el b/lisp/gnus-group.el
index 27784e8..65ce2f0 100644
--- a/lisp/gnus-group.el
+++ b/lisp/gnus-group.el
@@ -583,6 +583,7 @@ simple manner.")
     "<" beginning-of-buffer
     ">" end-of-buffer
     "\C-c\C-b" gnus-bug
+    "\C-c\C-n" gnus-namazu-search
     "\C-c\C-s" gnus-group-sort-groups
     "t" gnus-topic-mode
     "\C-c\M-g" gnus-activate-all-groups
@@ -614,7 +615,6 @@ simple manner.")
     "D" gnus-group-enter-directory
     "f" gnus-group-make-doc-group
     "G" gnus-group-make-nnir-group
-    "S" gnus-group-make-shimbun-group
     "w" gnus-group-make-web-group
     "r" gnus-group-rename-group
     "c" gnus-group-customize
diff --git a/lisp/gnus-namazu.el b/lisp/gnus-namazu.el
new file mode 100644
index 0000000..9955af9
--- /dev/null
+++ b/lisp/gnus-namazu.el
@@ -0,0 +1,439 @@
+;;; gnus-namazu.el --- Search mail with Namazu.
+
+;; Copyright (C) 2000,2001 Tsuchiya Masatoshi <tsuchiya@namazu.org>
+
+;; Author: Tsuchiya Masatoshi <tsuchiya@namazu.org>
+;; Keywords: mail searching namazu
+
+;;; Copyright:
+
+;; This file is a part of Semi-Gnus.
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 2, or (at your option)
+;; any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program; if not, you can either send email to this
+;; program's maintainer or write to: The Free Software Foundation,
+;; Inc.; 59 Temple Place, Suite 330; Boston, MA 02111-1307, USA.
+
+
+;;; Commentary:
+
+;; This file defines the command to search mails with Namazu and
+;; browse its results with Gnus.  This module requires the external
+;; command Namazu.  Visit the following page for more information.
+;;
+;;     http://www.namazu.org/
+
+
+;;; Install:
+
+;; (1) Make index of articles with Namzu before using this module.
+;;
+;;	 % mkdir ~/News/namazu
+;;	 % cd ~/News/namazu
+;;       % mknmz -a -c -h ~/Mail
+;;
+;; (2) Furthermore, put these expressions to your ~/.emacs, to set the
+;;     path of the index files to `gnus-namazu-index-directory' and to
+;;     initialize this module.
+;;
+;;       (setq gnus-namazu-index-directory (expand-file-name "~/Namazu"))
+
+;; If you would like to use this module in Gnus (not T-gnus), put this
+;; file into the lisp/ directory in the Gnus source tree and run `make
+;; install'.  And then, put the following expressions into your ~/.gnus.
+;;
+;;	 (require 'gnus-namazu)
+;;       (gnus-namazu-insinuate)
+
+
+;;; Usage:
+
+;; In group buffer or in summary buffer, type C-c C-n query RET.
+
+
+;;; Code:
+
+(eval-when-compile (require 'cl))
+(require 'nnoo)
+(require 'nnheader)
+(require 'nnmail)
+(require 'gnus-sum)
+(require 'std11)
+
+
+(defgroup gnus-namazu nil
+  "Search nnmh and nnml groups in Gnus with Namazu."
+  :group 'namazu
+  :group 'gnus
+  :prefix "gnus-namazu-")
+
+(defcustom gnus-namazu-indexed-servers nil
+  "*List of servers indexed with Namazu."
+  :type '(repeat gnus-select-method)
+  :group 'gnus-namazu)
+
+(defcustom gnus-namazu-index-directory
+  (if (boundp 'nnir-namazu-index-directory)
+      (symbol-value 'nnir-namazu-index-directory)
+    (expand-file-name "namazu" gnus-directory))
+  "*Index directory of Namazu."
+  :type 'directory
+  :group 'gnus-namazu)
+
+(defcustom gnus-namazu-command
+  (cond
+   ((boundp 'namazu-command)
+    (symbol-value 'namazu-command))
+   ((boundp 'nnir-namazu-program)
+    (symbol-value 'nnir-namazu-program))
+   (t "namazu"))
+  "*Name of the executable file of Namazu."
+  :group 'gnus-namazu
+  :type 'string)
+
+(defcustom gnus-namazu-additional-arguments nil
+  "*Additional arguments of Namazu.
+The options `-q', `-a', and `-l' are always used, very few other
+options make any sense in this context."
+  :type '(repeat string)
+  :group 'gnus-namazu)
+
+(defcustom gnus-namazu-field-keywords
+  '("date" "from" "newsgroups" "size" "subject" "summary" "to" "uri")
+  "*List of keywords to do field-search."
+  :type '(repeat string)
+  :group 'gnus-namazu)
+
+(defcustom gnus-namazu-coding-system
+  (if (>= emacs-major-version 20) 'euc-japan '*euc-japan*)
+  "*Coding system for Namazu process."
+  :type 'coding-system
+  :group 'gnus-namazu)
+
+
+(defmacro gnus-namazu/make-article (group number)
+  `(cons ,group ,number))
+(defmacro gnus-namazu/article-group  (x) `(car ,x))
+(defmacro gnus-namazu/article-number (x) `(cdr ,x))
+
+
+(defun gnus-namazu/setup ()
+  (unless gnus-namazu-indexed-servers
+    (setq gnus-namazu-indexed-servers
+	  (delq nil
+		(mapcar (lambda (method)
+			  (when (memq (car method) '(nnml nnmh))
+			    method))
+			(cons gnus-select-method
+			      gnus-secondary-select-methods)))))
+  (unless gnus-namazu-indexed-servers
+    (error "%s" "Can't find either nnml backend or nnmh backend"))
+  (unless (and (stringp gnus-namazu-index-directory)
+	       (file-directory-p gnus-namazu-index-directory)
+	       (file-readable-p
+		(expand-file-name "NMZ.i" gnus-namazu-index-directory)))
+    (error "%s" "Can't find index.  Check `gnus-namazu-index-directory'")))
+
+
+;; To suppress byte-compile warning.
+(eval-when-compile
+  (defvar nnml-directory)
+  (defvar nnmh-directory))
+
+(defun gnus-namazu/server-directory (server)
+  "Return the top directory of articles in SERVER."
+  (and (memq (car server) '(nnml nnmh))
+       (nnoo-change-server (car server) (nth 1 server) (nthcdr 2 server))
+       (file-name-as-directory
+	(expand-file-name (if (eq 'nnml (car server))
+			      nnml-directory
+			    nnmh-directory)))))
+
+
+;;; Functions to call Namazu.
+(defsubst gnus-namazu/call-namazu (query)
+  (let ((coding-system-for-read gnus-namazu-coding-system)
+	(coding-system-for-write gnus-namazu-coding-system)
+	(default-process-coding-system
+	  (cons gnus-namazu-coding-system gnus-namazu-coding-system))
+	(process-environment
+	 (copy-sequence process-environment)))
+    ;; Disable locale.
+    (dolist (env process-environment)
+      (when (string-match "\
+\\`\\(L\\(ANG\\|C_\\(ALL\\|CTYPE\\|COLLATE\\|TIME\\|NUMERIC\\|MONETARY\\|MESSAGES\\)\\)\\)=" env)
+	(setenv (match-string 1 env) nil)))
+    (setenv "LANG" "C")
+    (apply 'call-process
+	   `(,gnus-namazu-command
+	     nil			; input from /dev/null
+	     t				; output
+	     nil			; don't redisplay
+	     "-q"			; don't be verbose
+	     "-a"			; show all matches
+	     "-l"			; use list format
+	     ,@gnus-namazu-additional-arguments
+	     ,query
+	     ,gnus-namazu-index-directory))))
+
+(defun gnus-namazu/search (groups query)
+  (with-temp-buffer
+    (when (zerop (gnus-namazu/call-namazu query))
+      (let* ((articles)
+	     (server-alist
+	      (delq nil
+		    (let (dir)
+		      (mapcar
+		       (lambda (s)
+			 (when (setq dir (gnus-namazu/server-directory s))
+			   (cons (file-name-as-directory dir) s)))
+		       gnus-namazu-indexed-servers))))
+	     (topdir-regexp
+	      (regexp-opt (mapcar 'car server-alist) t)))
+	(goto-char (point-min))
+	(while (not (eobp))
+	  (let (server group file)
+	    (and (looking-at topdir-regexp)
+		 (setq server (cdr (assoc (match-string 1) server-alist))
+		       file (buffer-substring-no-properties
+			     (match-end 0) (point-at-eol)))
+		 (string-match "/\\([0-9]+\\)$" file)
+		 (progn
+		   (setq group (substring file 0 (match-beginning 0))
+			 file (match-string 1 file))
+		   (setq group
+			 (gnus-group-prefixed-name
+			  (nnheader-replace-chars-in-string group ?/ ?.)
+			  server))
+		   (when (or (not groups)
+			     (member group groups))
+		     (push (gnus-namazu/make-article
+			    group (string-to-number file))
+			   articles)))))
+	  (forward-line 1))
+	(nreverse articles)))))
+
+
+(defun gnus-namazu/get-target-groups ()
+  (cond
+   ((eq major-mode 'gnus-group-mode)
+    ;; In Group buffer.
+    (cond
+     (current-prefix-arg
+      (gnus-group-process-prefix current-prefix-arg))
+     (gnus-group-marked
+      (prog1 gnus-group-marked (gnus-group-unmark-all-groups)))))
+   ((eq major-mode 'gnus-summary-mode)
+    ;; In Summary buffer.
+    (if current-prefix-arg
+	(list (gnus-read-group "Group: "))
+      (if (and (gnus-ephemeral-group-p gnus-newsgroup-name)
+	       (string-match "^nnvirtual:namazu-search" gnus-newsgroup-name))
+	  (cadr (assq 'gnus-namazu-target-groups
+		      (gnus-info-method (gnus-get-info gnus-newsgroup-name))))
+	(list gnus-newsgroup-name))))))
+
+(defun gnus-namazu/get-current-query ()
+  (and (eq major-mode 'gnus-summary-mode)
+       (gnus-ephemeral-group-p gnus-newsgroup-name)
+       (string-match "^nnvirtual:namazu-search" gnus-newsgroup-name)
+       (cadr (assq 'gnus-namazu-current-query
+		   (gnus-info-method (gnus-get-info gnus-newsgroup-name))))))
+
+(defvar gnus-namazu/read-query-original-buffer nil)
+(defvar gnus-namazu/read-query-prompt nil)
+(defvar gnus-namazu/read-query-history nil)
+
+(defun gnus-namazu/get-current-subject ()
+  (and gnus-namazu/read-query-original-buffer
+       (bufferp gnus-namazu/read-query-original-buffer)
+       (with-current-buffer gnus-namazu/read-query-original-buffer
+	 (when (eq major-mode 'gnus-summary-mode)
+	   (let ((s (gnus-summary-article-subject)))
+	     ;; Remove typically prefixes of mailing lists.
+	     (when (string-match
+		    "^\\(\\[[^]]*[0-9]+\\]\\|([^)]*[0-9]+)\\)\\s-*" s)
+	       (setq s (substring s (match-end 0))))
+	     (when (string-match
+		    "^\\(Re\\(\\^?\\([0-9]+\\|\\[[0-9]+\\]\\)\\)?:\\s-*\\)+" s)
+	       (setq s (substring s (match-end 0))))
+	     (when (string-match "\\s-*(\\(re\\|was\\)\\b" s)
+	       (setq s (substring s 0 (match-beginning 0))))
+	     s)))))
+
+(defun gnus-namazu/get-current-from ()
+  (and gnus-namazu/read-query-original-buffer
+       (bufferp gnus-namazu/read-query-original-buffer)
+       (with-current-buffer gnus-namazu/read-query-original-buffer
+	 (when (eq major-mode 'gnus-summary-mode)
+	   (cadr (std11-extract-address-components
+		  (mail-header-from
+		   (gnus-summary-article-header))))))))
+
+(defmacro gnus-namazu/minibuffer-prompt-end ()
+  (if (fboundp 'minibuffer-prompt-end)
+      '(minibuffer-prompt-end)
+    '(point-min)))
+
+(defun gnus-namazu/message (string &rest arguments)
+  (let* ((s1 (concat
+	      gnus-namazu/read-query-prompt
+	      (buffer-substring (gnus-namazu/minibuffer-prompt-end)
+				(point-max))))
+	 (s2 (apply (function format) string arguments))
+	 (w (- (window-width)
+	       (string-width s1)
+	       (string-width s2)
+	       1)))
+    (message (if (>= w 0)
+		 (concat s1 (make-string w ?\ ) s2)
+	       s2))
+    (if (sit-for 0.3) (message s1))
+    s2))
+
+(defun gnus-namazu/complete-query ()
+  (interactive)
+  (let ((pos (point)))
+    (cond
+     ((and (re-search-backward "\\+\\([a-z]*\\)" nil t)
+	   (= pos (match-end 0)))
+      (let* ((partial (match-string 1))
+	     (completions
+	      (all-completions
+	       partial
+	       (mapcar 'list gnus-namazu-field-keywords))))
+	(cond
+	 ((null completions)
+	  (gnus-namazu/message "No completions of %s" partial))
+	 ((= 1 (length completions))
+	  (goto-char (match-beginning 1))
+	  (delete-region (match-beginning 1) (match-end 1))
+	  (insert (car completions) ":")
+	  (setq pos (point))
+	  (gnus-namazu/message "Completed"))
+	 (t
+	  (let ((x (try-completion partial (mapcar 'list completions))))
+	    (if (string= x partial)
+		(if (and (eq last-command
+			     'gnus-namazu/field-keyword-completion)
+			 completion-auto-help)
+		    (with-output-to-temp-buffer "*Completions*"
+		      (display-completion-list completions))
+		  (gnus-namazu/message "Sole completion"))
+	      (goto-char (match-beginning 1))
+	      (delete-region (match-beginning 1) (match-end 1))
+	      (insert x)
+	      (setq pos (point))))))))
+     ((and (looking-at "\\+subject:")
+	   (= pos (match-end 0)))
+      (let ((s (gnus-namazu/get-current-subject)))
+	(when s
+	  (goto-char pos)
+	  (insert "\"" s "\"")
+	  (setq pos (point)))))
+     ((and (looking-at "\\+from:")
+	   (= pos (match-end 0)))
+      (let ((f (gnus-namazu/get-current-from)))
+	(when f
+	  (goto-char pos)
+	  (insert "\"" f "\"")
+	  (setq pos (point))))))
+    (goto-char pos)))
+
+(defvar gnus-namazu/read-query-map
+  (let ((keymap (copy-keymap minibuffer-local-map)))
+    (define-key keymap "\t" 'gnus-namazu/complete-query)
+    keymap))
+
+(defun gnus-namazu/read-query (prompt &optional initial)
+  (let ((gnus-namazu/read-query-original-buffer (current-buffer))
+	(gnus-namazu/read-query-prompt prompt))
+    (unless initial
+      (when (setq initial (gnus-namazu/get-current-query))
+	(setq initial (cons initial 0))))
+    (read-from-minibuffer prompt initial gnus-namazu/read-query-map nil
+			  'gnus-namazu/read-query-history)))
+
+(defun gnus-namazu/truncate-article-list (articles)
+  (let ((hit (length articles)))
+    (when (> hit gnus-large-newsgroup)
+      (let* ((cursor-in-echo-area nil)
+	     (input
+	      (when (> hit gnus-large-newsgroup)
+		(read-from-minibuffer
+		 (format
+		  "Too many articles were retrieved.  How many articles (max %d): "
+		  hit)
+		 (cons (number-to-string gnus-large-newsgroup) 0)))))
+	(unless (string-match "^[ \t]*$" input)
+	  (setcdr (nthcdr (min (1- (string-to-number input)) hit) articles)
+		  nil))))
+    articles))
+
+(defun gnus-namazu-search (groups query)
+  "Search QUERY through GROUPS with Namazu,
+and make a virtual group contains its results."
+  (interactive
+   (list
+    (gnus-namazu/get-target-groups)
+    (gnus-namazu/read-query "Enter Keyword: ")))
+  (gnus-namazu/setup)
+  (let ((articles (gnus-namazu/search groups query)))
+    (if articles
+	(let ((real-groups groups)
+	      (vgroup
+	       (apply 'format
+		      "nnvirtual:namazu-search?query=%s&groups=%s&id=%d%d%d"
+		      query
+		      (if groups (mapconcat 'identity groups ",") "ALL")
+		      (current-time))))
+	  (gnus-namazu/truncate-article-list articles)
+	  (unless real-groups
+	    (dolist (a articles)
+	      (add-to-list 'real-groups (gnus-namazu/article-group a))))
+	  ;; Generate virtual group which includes all results.
+	  (setq vgroup
+		(gnus-group-read-ephemeral-group
+		 vgroup
+		 `(nnvirtual ,vgroup
+			     (nnvirtual-component-groups ,real-groups)
+			     (gnus-namazu-target-groups ,groups)
+			     (gnus-namazu-current-query ,query))
+		 t (cons (current-buffer) (current-window-configuration)) t))
+	  ;; Generate new summary buffer which contains search results.
+	  (gnus-group-read-group
+	   t t vgroup
+	   (sort (delq nil ;; Ad-hoc fix, to avoid wrong-type-argument error.
+		       (mapcar
+			(lambda (a)
+			  (nnvirtual-reverse-map-article
+			   (gnus-namazu/article-group a)
+			   (gnus-namazu/article-number a)))
+			articles))
+		 '<)))
+      (message "No entry."))))
+
+
+(defun gnus-namazu-insinuate ()
+  (add-hook
+   'gnus-group-mode-hook
+   (lambda ()
+     (define-key gnus-group-mode-map "\C-c\C-n" 'gnus-namazu-search)))
+  (add-hook
+   'gnus-summary-mode-hook
+   (lambda ()
+     (define-key gnus-summary-mode-map "\C-c\C-n" 'gnus-namazu-search))))
+
+
+(provide 'gnus-namazu)
+;; gnus-namazu.el ends here.
diff --git a/lisp/gnus-sum.el b/lisp/gnus-sum.el
index b0eba9c..b00c1d6 100644
--- a/lisp/gnus-sum.el
+++ b/lisp/gnus-sum.el
@@ -1560,6 +1560,7 @@ increase the score of each group you read."
     "\M-\C-e" gnus-summary-edit-parameters
     "\M-\C-a" gnus-summary-customize-parameters
     "\C-c\C-b" gnus-bug
+    "\C-c\C-n" gnus-namazu-search
     "*" gnus-cache-enter-article
     "\M-*" gnus-cache-remove-article
     "\M-&" gnus-summary-universal-argument
diff --git a/lisp/gnus.el b/lisp/gnus.el
index f77485b..a75e43d 100644
--- a/lisp/gnus.el
+++ b/lisp/gnus.el
@@ -2170,6 +2170,9 @@ gnus-newsrc-hashtb should be kept so that both hold the same information.")
 	     (subrp (symbol-function 'base64-encode-string)))
   (require 'base64))
 
+;; To search articles with Namazu.
+(autoload 'gnus-namazu-search "gnus-namazu" nil t)
+
 ;; To make nnir groups.
 (autoload 'gnus-group-make-nnir-group "nnir" nil t)
 
-- 
1.7.10.4