1 ;;; ecomplete.el --- electric completion of addresses and the like
3 ;; Copyright (C) 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
5 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs 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 3 of the License, or
13 ;; (at your option) any later version.
15 ;; GNU Emacs 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. If not, see <http://www.gnu.org/licenses/>.
31 (unless (fboundp 'with-no-warnings)
32 (defmacro with-no-warnings (&rest body)
35 (defgroup ecomplete nil
36 "Electric completion of email addresses and the like."
39 (defcustom ecomplete-database-file "~/.ecompleterc"
40 "*The name of the file to store the ecomplete data."
44 (defcustom ecomplete-database-file-coding-system 'iso-2022-7bit
45 "Coding system used for writing the ecomplete database file."
46 :type '(symbol :tag "Coding system")
49 ;;; Internal variables.
51 (defvar ecomplete-database nil)
54 (defun ecomplete-setup ()
55 (when (file-exists-p ecomplete-database-file)
57 (let ((coding-system-for-read ecomplete-database-file-coding-system))
58 (insert-file-contents ecomplete-database-file)
59 (setq ecomplete-database (read (current-buffer)))))))
61 (defun ecomplete-add-item (type key text)
62 (let ((elems (assq type ecomplete-database))
63 (now (string-to-number
64 (format "%.0f" (if (and (fboundp 'float-time)
65 (subrp (symbol-function 'float-time)))
68 (time-to-seconds (current-time)))))))
71 (push (setq elems (list type)) ecomplete-database))
72 (if (setq entry (assoc key (cdr elems)))
73 (setcdr entry (list (1+ (cadr entry)) now text))
74 (nconc elems (list (list key 1 now text))))))
76 (defun ecomplete-get-item (type key)
77 (assoc key (cdr (assq type ecomplete-database))))
79 (defun ecomplete-save ()
81 (let ((coding-system-for-write ecomplete-database-file-coding-system))
83 (loop for (type . elems) in ecomplete-database
85 (insert (format "(%s\n" type))
87 (prin1 entry (current-buffer))
91 (write-region (point-min) (point-max)
92 ecomplete-database-file nil 'silent))))
94 (defun ecomplete-get-matches (type match)
95 (let* ((elems (cdr (assq type ecomplete-database)))
96 (match (regexp-quote match))
99 (loop for (key count time text) in elems
100 when (string-match match text)
101 collect (list count time text))
103 (> (car l1) (car l2))))))
104 (when (> (length candidates) 10)
105 (setcdr (nthcdr 10 candidates) nil))
106 (unless (zerop (length candidates))
108 (dolist (candidate candidates)
109 (insert (caddr candidate) "\n"))
110 (goto-char (point-min))
111 (put-text-property (point) (1+ (point)) 'ecomplete t)
112 (while (re-search-forward match nil t)
113 (put-text-property (match-beginning 0) (match-end 0)
117 (defun ecomplete-display-matches (type word &optional choose)
118 (let* ((matches (ecomplete-get-matches type word))
120 (max-lines (when matches (- (length (split-string matches "\n")) 2)))
121 (message-log-max nil)
125 (message "No ecomplete matches")
129 (message "%s" matches)
131 (setq highlight (ecomplete-highlight-match-line matches line))
132 (while (not (memq (setq command (read-event highlight)) '(? return)))
135 (setq line (min (1+ line) max-lines)))
137 (setq line (max (1- line) 0))))
138 (setq highlight (ecomplete-highlight-match-line matches line)))
139 (when (eq command 'return)
140 (nth line (split-string matches "\n")))))))
142 (defun ecomplete-highlight-match-line (matches line)
145 (goto-char (point-min))
148 (narrow-to-region (point) (point-at-eol))
150 ;; Put the 'region face on any characters on this line that
151 ;; aren't already highlighted.
152 (unless (get-text-property (point) 'face)
153 (put-text-property (point) (1+ (point)) 'face 'highlight))
159 ;;; ecomplete.el ends here