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Diffstat (limited to 'lisp/gnus/ecomplete.el')
| -rw-r--r-- | lisp/gnus/ecomplete.el | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/lisp/gnus/ecomplete.el b/lisp/gnus/ecomplete.el new file mode 100644 index 00000000000..1c333fd2e03 --- /dev/null +++ b/lisp/gnus/ecomplete.el @@ -0,0 +1,152 @@ +;;; ecomplete.el --- electric completion of addresses and the like +;; Copyright (C) 2006 Free Software Foundation, Inc. + +;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org> +;; Keywords: mail + +;; This file is part of GNU Emacs. + +;; GNU Emacs 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 3, or (at your option) +;; any later version. + +;; GNU Emacs 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 GNU Emacs; see the file COPYING. If not, write to the +;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, +;; Boston, MA 02110-1301, USA. + +;;; Commentary: + +;;; Code: + +(eval-when-compile + (require 'cl)) + +(defgroup ecomplete nil + "Electric completion of email addresses and the like." + :group 'mail) + +(defcustom ecomplete-database-file "~/.ecompleterc" + "*The name of the file to store the ecomplete data." + :group 'ecomplete + :type 'file) + +(defcustom ecomplete-database-file-coding-system 'iso-2022-7bit + "Coding system used for writing the ecomplete database file." + :type '(symbol :tag "Coding system") + :group 'ecomplete) + +;;; Internal variables. + +(defvar ecomplete-database nil) + +;;;###autoload +(defun ecomplete-setup () + (when (file-exists-p ecomplete-database-file) + (with-temp-buffer + (let ((coding-system-for-read ecomplete-database-file-coding-system)) + (insert-file-contents ecomplete-database-file) + (setq ecomplete-database (read (current-buffer))))))) + +(defun ecomplete-add-item (type key text) + (let ((elems (assq type ecomplete-database)) + (now (string-to-number + (format "%.0f" (time-to-seconds (current-time))))) + entry) + (unless elems + (push (setq elems (list type)) ecomplete-database)) + (if (setq entry (assoc key (cdr elems))) + (setcdr entry (list (1+ (cadr entry)) now text)) + (nconc elems (list (list key 1 now text)))))) + +(defun ecomplete-get-item (type key) + (assoc key (cdr (assq type ecomplete-database)))) + +(defun ecomplete-save () + (with-temp-buffer + (let ((coding-system-for-write ecomplete-database-file-coding-system)) + (insert "(") + (loop for (type . elems) in ecomplete-database + do + (insert (format "(%s\n" type)) + (dolist (entry elems) + (prin1 entry (current-buffer)) + (insert "\n")) + (insert ")\n")) + (insert ")") + (write-region (point-min) (point-max) + ecomplete-database-file nil 'silent)))) + +(defun ecomplete-get-matches (type match) + (let* ((elems (cdr (assq type ecomplete-database))) + (match (regexp-quote match)) + (candidates + (sort + (loop for (key count time text) in elems + when (string-match match text) + collect (list count time text)) + (lambda (l1 l2) + (> (car l1) (car l2)))))) + (when (> (length candidates) 10) + (setcdr (nthcdr 10 candidates) nil)) + (unless (zerop (length candidates)) + (with-temp-buffer + (dolist (candidate candidates) + (insert (caddr candidate) "\n")) + (goto-char (point-min)) + (put-text-property (point) (1+ (point)) 'ecomplete t) + (while (re-search-forward match nil t) + (put-text-property (match-beginning 0) (match-end 0) + 'face 'isearch)) + (buffer-string))))) + +(defun ecomplete-display-matches (type word &optional choose) + (let* ((matches (ecomplete-get-matches type word)) + (line 0) + (max-lines (when matches (- (length (split-string matches "\n")) 2))) + (message-log-max nil) + command highlight) + (if (not matches) + (progn + (message "No ecomplete matches") + nil) + (if (not choose) + (progn + (message matches) + nil) + (setq highlight (ecomplete-highlight-match-line matches line)) + (while (not (memq (setq command (read-event highlight)) '(? return))) + (cond + ((eq command ?\M-n) + (setq line (min (1+ line) max-lines))) + ((eq command ?\M-p) + (setq line (max (1- line) 0)))) + (setq highlight (ecomplete-highlight-match-line matches line))) + (when (eq command 'return) + (nth line (split-string matches "\n"))))))) + +(defun ecomplete-highlight-match-line (matches line) + (with-temp-buffer + (insert matches) + (goto-char (point-min)) + (forward-line line) + (save-restriction + (narrow-to-region (point) (point-at-eol)) + (while (not (eobp)) + ;; Put the 'region face on any charactes on this line that + ;; aren't already highlighted. + (unless (get-text-property (point) 'face) + (put-text-property (point) (1+ (point)) 'face 'highlight)) + (forward-char 1))) + (buffer-string))) + +(provide 'ecomplete) + +;; arch-tag: 34622935-bb81-4711-a600-57b89c2ece72 +;;; ecomplete.el ends here |