1 ;;; riece-keyword.el --- highlight keywords in channel buffers
2 ;; Copyright (C) 1998-2003 Daiki Ueno
4 ;; Author: Daiki Ueno <ueno@unixuser.org>
6 ;; Keywords: IRC, riece
8 ;; This file is part of Riece.
10 ;; This program is free software; you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2, or (at your option)
15 ;; This program is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 ;; Boston, MA 02111-1307, USA.
27 ;; To use, add the following line to your ~/.riece/init.el:
28 ;; (add-to-list 'riece-addons 'riece-keyword)
32 (defgroup riece-keyword nil
33 "Highlight keyword in IRC buffer."
36 (defcustom riece-keywords nil
37 "Keywords to be highlightened."
38 :type '(repeat string)
39 :group 'riece-keyword)
41 (defcustom riece-notify-keyword-functions nil
42 "Functions used to notify keyword match."
43 :type '(list function)
44 :group 'riece-keyword)
46 (defface riece-keyword-face
48 (:foreground "red" :underline t))
51 "Face used for highlightening matching keyword."
52 :group 'riece-highlight-faces)
53 (defvar riece-keyword-face 'riece-keyword-face)
55 ;;; The old XEmacs package doesn't have autoload setting for regexp-opt.
56 (autoload 'regexp-opt "regexp-opt")
57 (defun riece-keyword-message-filter (message)
59 (let ((regexp (regexp-opt riece-keywords))
61 (while (string-match regexp (riece-message-text message) index)
62 (if (memq 'riece-highlight riece-addons)
63 (put-text-property (match-beginning 0) (match-end 0)
65 (riece-message-text message)))
67 (run-hook-with-args 'riece-notify-keyword-functions
68 (match-string 0 (riece-message-text message))))
69 (setq index (match-end 0)))))
72 (defun riece-keyword-map-region (start end function)
75 ;; Search for the beginning of the button region.
76 (unless (get-text-property start 'riece-keyword)
77 (setq start (next-single-property-change start 'riece-keyword
81 ;; Search for the end of the button region.
82 (let ((button-end (next-single-property-change start 'riece-keyword
84 (if (= button-end end)
86 (funcall function start button-end)
87 (setq start button-end)))))
89 (defun riece-keyword-scan-region (start end)
90 (riece-keyword-map-region
93 (riece-overlay-put (riece-make-overlay start end)
94 'face riece-keyword-face))))
96 (defun riece-keyword-requires ()
97 (if (memq 'riece-highlight riece-addons)
100 (defun riece-keyword-insinuate ()
101 (add-hook 'riece-message-filter-functions 'riece-keyword-message-filter)
102 (add-hook 'riece-after-insert-functions 'riece-keyword-scan-region))
104 (provide 'riece-keyword)
106 ;;; riece-keyword.el ends here