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)
47 (defun ecomplete-setup ()
48 (when (file-exists-p ecomplete-database-file)
50 (insert-file-contents ecomplete-database-file)
51 (setq ecomplete-database (read (current-buffer))))
53 (loop for (type . elems) in ecomplete-database
54 do (let ((buffer (get-buffer-create
55 (format " *ecomplete %s*" type))))
58 (loop for (key count time text) in elems
59 do (insert text "\n")))))))
61 (defun ecomplete-add-item (type key text)
62 (let ((elems (assq type ecomplete-database))
63 (now (string-to-number
64 (format "%.0f" (time-to-seconds (current-time)))))
67 (push (setq elems (list type)) ecomplete-database))
68 (if (setq entry (assoc key (cdr elems)))
69 (setcdr entry (list (1+ (cadr entry)) now text))
70 (nconc elems (list (list key 1 now text))))))
72 (defun ecomplete-get-item (type key)
73 (assoc key (cdr (assq type ecomplete-database))))
75 (defun ecomplete-save ()
78 (loop for (type . elems) in ecomplete-database
80 (insert (format "(%s\n" type))
82 (prin1 entry (current-buffer))
86 (write-region (point-min) (point-max) ecomplete-database-file nil 'silent)))
88 (defun ecomplete-show-matches (type match)
89 (let* ((elems (cdr (assq type ecomplete-database)))
90 (match (regexp-quote match))
93 (loop for (key count time text) in elems
94 when (string-match match text)
95 collect (list count time text))
97 (> (car l1) (car l2))))))
98 (when (> (length candidates) 10)
99 (setcdr (nthcdr 10 candidates) nil))
100 (unless (zerop (length candidates))
102 (dolist (candidate candidates)
103 (insert (caddr candidate) "\n"))
104 (goto-char (point-min))
105 (while (re-search-forward match nil t)
106 (put-text-property (match-beginning 0) (match-end 0)
108 (setq ecomplete-current-matches (buffer-string)
109 ecomplete-current-line 0
110 ecomplete-match-length (count-lines (point-min) (point-max)))
111 (ecomplete-highlight-match-line)))))
113 (defun ecomplete-up-list ()
114 "Go up the list of matches."
116 (when (and ecomplete-current-matches
117 (> ecomplete-current-line 0))
118 (decf ecomplete-current-line)
119 (ecomplete-highlight-match-line)))
121 (defun ecomplete-down-list ()
122 "Go down the list of matches."
124 (when (and ecomplete-current-matches
125 (< ecomplete-current-line ecomplete-match-length))
126 (incf ecomplete-current-line)
127 (ecomplete-highlight-match-line)))
129 (defun ecomplete-highlight-match-line ()
131 (insert ecomplete-current-matches)
132 (goto-char (point-min))
133 (forward-line ecomplete-current-line)
135 (narrow-to-region (point) (line-end-position))
137 ;; Put the 'region face on any charactes on this line that
138 ;; aren't already highlighted.
139 (unless (get-text-property (point) 'face)
140 (put-text-property (point) (1+ (point)) 'face 'region))
142 (message "%s" (buffer-string))))
146 ;;; ecomplete.el ends here