--- /dev/null
+;;; ecomplete.el --- electric completion of addresses and the like
+
+;; Copyright (C) 2006-2016 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 of the License, 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. If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;;; Code:
+
+(eval-when-compile
+ (require 'cl))
+
+(eval-when-compile
+ (when (featurep 'xemacs)
+ ;; The `kbd' macro requires that the `read-kbd-macro' macro is available.
+ (require 'edmacro)))
+
+(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" (if (featurep 'emacs)
+ (float-time)
+ (require 'gnus-util)
+ (gnus-float-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 "%s" matches)
+ nil)
+ (setq highlight (ecomplete-highlight-match-line matches line))
+ (let ((local-map (make-sparse-keymap))
+ selected)
+ (define-key local-map (kbd "RET")
+ (lambda () (setq selected (nth line (split-string matches "\n")))))
+ (define-key local-map (kbd "M-n")
+ (lambda () (setq line (min (1+ line) max-lines))))
+ (define-key local-map (kbd "M-p")
+ (lambda () (setq line (max (1- line) 0))))
+ (let ((overriding-local-map local-map))
+ (while (and (null selected)
+ (setq command (read-key-sequence highlight))
+ (lookup-key local-map command))
+ (apply (key-binding command) nil)
+ (setq highlight (ecomplete-highlight-match-line matches line))))
+ (if selected
+ (message selected)
+ (message "Abort"))
+ selected)))))
+
+(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 characters 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)
+
+;;; ecomplete.el ends here
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