From: tsuchiya <tsuchiya>
Date: Sun, 9 Dec 2001 08:29:42 +0000 (+0000)
Subject: New file which is imported from `t-gnus-6_15-quimby' branch.
X-Git-Tag: t-gnus-6_15_3-06-last-~5
X-Git-Url: http://git.chise.org/gitweb/?p=elisp%2Fgnus.git-;a=commitdiff_plain;h=34d8a6153acbc46f36bf4f5205a29848b18687ed

New file which is imported from `t-gnus-6_15-quimby' branch.
---

diff --git a/ChangeLog b/ChangeLog
index 7094133..1abbac1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2001-12-09  TSUCHIYA Masatoshi  <tsuchiya@namazu.org>
+
+	* lisp/gnus-namazu.el: New file.
+
 2001-09-27  Katsumi Yamaoka  <yamaoka@jpl.org>
 
 	* lisp/gnus-vers.el (gnus-revision-number): Increment to 06.
diff --git a/lisp/gnus-namazu.el b/lisp/gnus-namazu.el
new file mode 100644
index 0000000..55317ea
--- /dev/null
+++ b/lisp/gnus-namazu.el
@@ -0,0 +1,500 @@
+;;; 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://namazu.org/
+
+
+;;; Install:
+
+;; Make index of articles with Namzu before using this module.
+;;
+;;	 % mkdir ~/News/namazu
+;;       % mknmz -a -h -O ~/News/namazu ~/Mail
+;;
+;; When you put index files of Namazu into the directory other than
+;; the default one (~/News/namazu), it is necessary to put this
+;; expression to your ~/.gnus, in order to set the path of index files
+;; to `gnus-namazu-index-directories'.
+;;
+;;      (setq gnus-namazu-index-directories
+;;            (list (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)
+
+;; It is required for Mule 2.3.  See the file Mule23@1934.en.
+(eval-and-compile
+  (autoload 'regexp-opt "regexp-opt"))
+
+;; To suppress byte-compile warning.
+(eval-when-compile
+  (defvar nnml-directory)
+  (defvar nnml-group-alist)
+  (defvar nnmh-directory)
+  (defvar nnmh-group-alist))
+
+
+(defgroup gnus-namazu nil
+  "Search nnmh and nnml groups in Gnus with Namazu."
+  :group 'namazu
+  :group 'gnus
+  :prefix "gnus-namazu-")
+
+(defcustom gnus-namazu-index-directories
+  (list
+   (or (and (boundp 'gnus-namazu-index-directory)
+	    (symbol-value 'gnus-namazu-index-directory))
+       (and (boundp 'nnir-namazu-index-directory)
+	    (symbol-value 'nnir-namazu-index-directory))
+       (expand-file-name "namazu" gnus-directory)))
+  "*Index directory of Namazu."
+  :type '(repeat directory)
+  :group 'gnus-namazu)
+
+(defcustom gnus-namazu-command
+  (or (and (boundp 'namazu-command)
+	   (symbol-value 'namazu-command))
+      (and (boundp 'nnir-namazu-program)
+	   (symbol-value 'nnir-namazu-program))
+      "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 (memq system-type '(windows-nt OS/2 emx))
+      (if (boundp 'MULE) '*sjis* 'shift_jis)
+    (if (boundp 'MULE) '*euc-japan* 'euc-japan))
+  "*Coding system for Namazu process."
+  :type 'coding-system
+  :group 'gnus-namazu)
+
+(defcustom gnus-namazu-need-path-normalization
+  (eq system-type 'windows-nt)
+  "*Non-nil means that outputs of namazu may contain a not normalized path."
+  :type 'boolean
+  :group 'gnus-namazu)
+
+(defcustom gnus-namazu-case-sensitive-filesystem
+  (not (eq system-type 'windows-nt))
+  "*Non-nil means that the using file system distinguishes cases of characters."
+  :type 'boolean
+  :group 'gnus-namazu)
+
+
+;;; Internal Variable:
+(defvar gnus-namazu/group-alist nil
+  "Associative list to map groups in lower case to official names.")
+(defconst gnus-namazu/group-name-regexp "\\`nnvirtual:namazu-search\\?")
+
+
+(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))
+
+(defsubst gnus-namazu/indexed-servers ()
+  "Choice appropriate servers from opened ones, and return thier list."
+  (append
+   (gnus-servers-using-backend 'nnml)
+   (gnus-servers-using-backend 'nnmh)))
+
+(defun gnus-namazu/setup ()
+  (add-to-list 'gnus-group-name-charset-group-alist
+	       (cons gnus-namazu/group-name-regexp gnus-namazu-coding-system))
+  (unless gnus-namazu-case-sensitive-filesystem
+    ;; FIXME: The alist to map group names in lower case to real names
+    ;; is reconstructed every when gnus-namazu/setup() is called.
+    ;; This reconstruction make gnus-namazu-search() slow.
+    (setq gnus-namazu/group-alist nil)
+    (dolist (server (gnus-namazu/indexed-servers))
+      (dolist (group (gnus-namazu/request-list server))
+	(let ((name (gnus-group-prefixed-name group server)))
+	  (unless (assoc name gnus-namazu/group-alist)
+	    (push (cons (downcase name) name) gnus-namazu/group-alist)))))))
+
+(defun gnus-namazu/shutdown ()
+  (setq gnus-namazu/group-alist nil))
+(add-hook 'gnus-exit-gnus-hook 'gnus-namazu/shutdown)
+
+(defun gnus-namazu/request-list (server)
+  "Return groups of the server SERVER."
+  (and (memq (car server) '(nnml nnmh))
+       (nnoo-change-server (car server) (nth 1 server) (nthcdr 2 server))
+       (gnus-request-list server)
+       (mapcar (function car)
+	       (if (eq 'nnml (car server))
+		   nnml-group-alist
+		 nnmh-group-alist))))
+
+(defun gnus-namazu/server-directory (server)
+  "Return the top directory of the server 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/normalize-results ()
+  "Normalize file names returned by Namazu in this current buffer."
+  (goto-char (point-min))
+  (while (not (eobp))
+    (when (if gnus-namazu-need-path-normalization
+	      (or (not (looking-at "/\\(.\\)|/"))
+		  (replace-match "\\1:/"))
+	    (eq ?~ (char-after (point))))
+      (insert (expand-file-name
+	       (buffer-substring (gnus-point-at-bol) (gnus-point-at-eol))))
+      (delete-region (point) (gnus-point-at-eol)))
+    (forward-line 1)))
+
+(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))
+	(file-name-coding-system gnus-namazu-coding-system)
+	(pathname-coding-system gnus-namazu-coding-system))
+    (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-directories))))
+
+(defsubst gnus-namazu/group-prefixed-name (group method)
+  "Return the whole name from GROUP and METHOD."
+  (if gnus-namazu-case-sensitive-filesystem
+      (gnus-group-prefixed-name group method)
+    (let ((name (gnus-group-prefixed-name group method)))
+      (or (cdr (assoc (downcase name) gnus-namazu/group-alist))
+	  name))))
+
+(defun gnus-namazu/search (groups query)
+  (with-temp-buffer
+    (let ((exit-status (gnus-namazu/call-namazu query)))
+      (unless (zerop exit-status)
+	(error "Namazu finished abnormally: %d" exit-status))
+      (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))))
+	(gnus-namazu/normalize-results)
+	(goto-char (point-min))
+	(while (not (eobp))
+	  (let (server group file)
+	    (and (looking-at topdir-regexp)
+		 ;; Check a discovered file is managed by Gnus servers.
+		 (setq file (buffer-substring-no-properties
+			     (match-end 0) (gnus-point-at-eol))
+		       server (cdr (assoc (match-string-no-properties 0)
+					  server-alist)))
+		 ;; Check validity of the file name.
+		 (string-match "/\\([0-9]+\\)\\'" file)
+		 (progn
+		   (setq group (substring file 0 (match-beginning 0))
+			 file (match-string 1 file))
+		   (setq group
+			 (gnus-namazu/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)))))
+
+
+;;; User Interface:
+(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 gnus-namazu/group-name-regexp 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 gnus-namazu/group-name-regexp 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 (mail-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 query: ")))
+  (gnus-namazu/setup)
+  (let ((articles (gnus-namazu/search groups query)))
+    (if articles
+	(let ((real-groups groups)
+	      (vgroup
+	       (apply (function format)
+		      "nnvirtual:namazu-search?query=%s&groups=%s&id=%d%d%d"
+		      query
+		      (if groups (mapconcat 'identity groups ",") "ALL")
+		      (current-time))
+	       gnus-namazu-coding-system))
+	  (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.
+	  (when (fboundp 'gnus-group-decoded-name)
+	    (setq vgroup
+		  (encode-coding-string vgroup gnus-namazu-coding-system)))
+	  (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.