1 ;;; ecomplete.el --- electric completion of addresses and the like
2 ;; Copyright (C) 2006 Free Software Foundation, Inc.
4 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
22 ;; Boston, MA 02110-1301, USA.
31 (defgroup ecomplete nil
32 "Suppression of duplicate articles."
35 (defcustom ecomplete-database-file "~/.ecompleterc"
36 "*The name of the file to store the ecomplete data."
40 ;;; Internal variables.
42 (defvar ecomplete-database nil)
43 (defvar ecomplete-current-matches nil)
44 (defvar ecomplete-match-length nil)
45 (defvar ecomplete-current-line nil)
46 (defvar ecomplete-current-match nil)
48 (defun ecomplete-setup ()
49 (when (file-exists-p ecomplete-database-file)
51 (insert-file-contents ecomplete-database-file)
52 (setq ecomplete-database (read (current-buffer))))))
54 (defun ecomplete-add-item (type key text)
55 (let ((elems (assq type ecomplete-database))
56 (now (string-to-number
57 (format "%.0f" (time-to-seconds (current-time)))))
60 (push (setq elems (list type)) ecomplete-database))
61 (if (setq entry (assoc key (cdr elems)))
62 (setcdr entry (list (1+ (cadr entry)) now text))
63 (nconc elems (list (list key 1 now text))))))
65 (defun ecomplete-get-item (type key)
66 (assoc key (cdr (assq type ecomplete-database))))
68 (defun ecomplete-save ()
71 (loop for (type . elems) in ecomplete-database
73 (insert (format "(%s\n" type))
75 (prin1 entry (current-buffer))
79 (write-region (point-min) (point-max) ecomplete-database-file nil 'silent)))
81 (defun ecomplete-get-matches (type match)
82 (setq ecomplete-current-match match)
83 (let* ((elems (cdr (assq type ecomplete-database)))
84 (match (regexp-quote match))
87 (loop for (key count time text) in elems
88 when (string-match match text)
89 collect (list count time text))
91 (> (car l1) (car l2))))))
92 (when (> (length candidates) 10)
93 (setcdr (nthcdr 10 candidates) nil))
94 (unless (zerop (length candidates))
96 (dolist (candidate candidates)
97 (insert (caddr candidate) "\n"))
98 (goto-char (point-min))
99 (put-text-property (point) (1+ (point)) 'ecomplete t)
100 (while (re-search-forward match nil t)
101 (put-text-property (match-beginning 0) (match-end 0)
103 (setq ecomplete-current-matches (buffer-string)
104 ecomplete-current-line -1
105 ecomplete-match-length (count-lines (point-min) (point-max)))))))
107 (defun ecomplete-prev-match (type match)
108 "Go up the list of matches."
110 (unless (equal match ecomplete-current-match)
111 (ecomplete-get-matches type match))
112 (when (and ecomplete-current-matches
113 (> ecomplete-current-line 0))
114 (decf ecomplete-current-line)
115 (ecomplete-highlight-match-line)))
117 (defun ecomplete-next-match (type match)
118 "Go down the list of matches."
120 (unless (equal match ecomplete-current-match)
121 (ecomplete-get-matches type match))
122 (when (and ecomplete-current-matches
123 (< ecomplete-current-line ecomplete-match-length))
124 (incf ecomplete-current-line)
125 (ecomplete-highlight-match-line)))
127 (defun ecomplete-highlight-match-line ()
129 (insert ecomplete-current-matches)
130 (goto-char (point-min))
131 (forward-line ecomplete-current-line)
133 (narrow-to-region (point) (line-end-position))
135 ;; Put the 'region face on any charactes on this line that
136 ;; aren't already highlighted.
137 (unless (get-text-property (point) 'face)
138 (put-text-property (point) (1+ (point)) 'face 'region))
140 (message "%s" (buffer-string))))
142 (defun ecomplete-return-current-match ()
143 (nth ecomplete-current-line (split-string ecomplete-current-matches "\n")))
147 ;;; ecomplete.el ends here