;;; utf7.el --- UTF-7 encoding/decoding for Emacs -*-coding: iso-8859-1;-*-
-;; Copyright (C) 1999, 2000, 2003 Free Software Foundation, Inc.
+
+;; Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
+;; 2008, 2009, 2010 Free Software Foundation, Inc.
;; Author: Jon K Hellan <hellan@acm.org>
;; Maintainer: bugs@gnus.org
;; This file is part of GNU Emacs.
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; 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 2, or (at your option)
-;; any later version.
+;; 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
;; 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., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
(defconst utf7-utf-16-coding-system
(cond ((mm-coding-system-p 'utf-16-be-no-signature) ; Mule-UCS
'utf-16-be-no-signature)
- ((and (mm-coding-system-p 'utf-16-be) ; Emacs 22.1
+ ((and (mm-coding-system-p 'utf-16-be) ; Emacs 21.3, Emacs 22
;; Avoid versions with BOM.
(= 2 (length (encode-coding-string "a" 'utf-16-be))))
'utf-16-be)
(defun utf7-encode (string &optional for-imap)
"Encode UTF-7 STRING. Use IMAP modification if FOR-IMAP is non-nil."
- (let ((default-enable-multibyte-characters t))
- (with-temp-buffer
- (insert string)
- (utf7-encode-internal for-imap)
- (buffer-string))))
+ (if (and (coding-system-p 'utf-7) (coding-system-p 'utf-7-imap))
+ ;; Emacs 23 with proper support for IMAP
+ (encode-coding-string string (if for-imap 'utf-7-imap 'utf-7))
+ (mm-with-multibyte-buffer
+ (insert string)
+ (utf7-encode-internal for-imap)
+ (buffer-string))))
(defun utf7-decode (string &optional for-imap)
"Decode UTF-7 STRING. Use IMAP modification if FOR-IMAP is non-nil."
- (let ((default-enable-multibyte-characters nil))
- (with-temp-buffer
- (insert string)
- (utf7-decode-internal for-imap)
- (mm-enable-multibyte)
- (buffer-string))))
+ (if (and (coding-system-p 'utf-7) (coding-system-p 'utf-7-imap))
+ ;; Emacs 23 with proper support for IMAP
+ (decode-coding-string string (if for-imap 'utf-7-imap 'utf-7))
+ (mm-with-unibyte-buffer
+ (insert string)
+ (utf7-decode-internal for-imap)
+ (mm-enable-multibyte)
+ (buffer-string))))
(provide 'utf7)
-;;; arch-tag: 96078b55-85c7-4161-aed2-932c24b282c7
+;; arch-tag: 96078b55-85c7-4161-aed2-932c24b282c7
;;; utf7.el ends here