;;; yenc.el --- elisp native yenc decoder
-;; Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+;; Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
;; Author: Jesper Harder <harder@ifa.au.dk>
;; Keywords: yenc news
;; 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., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207
208 209 210 211 212 213])
+(defun yenc-first-part-p ()
+ "Say whether the buffer contains the first part of a yEnc file."
+ (save-excursion
+ (goto-char (point-min))
+ (re-search-forward "^=ybegin part=1 " nil t)))
+
+(defun yenc-last-part-p ()
+ "Say whether the buffer contains the last part of a yEnc file."
+ (save-excursion
+ (goto-char (point-min))
+ (let (total-size end-size)
+ (when (re-search-forward "^=ybegin.*size=\\([0-9]+\\)" nil t)
+ (setq total-size (match-string 1)))
+ (when (re-search-forward "^=ypart.*end=\\([0-9]+\\)" nil t)
+ (setq end-size (match-string 1)))
+ (and total-size
+ end-size
+ (string= total-size end-size)))))
+
;;;###autoload
(defun yenc-decode-region (start end)
"Yenc decode region between START and END using an internal decoder."
(when (re-search-forward "^=yend.*$" end t)
(setq last (match-beginning 0))
(setq footer-alist (yenc-parse-line (match-string 0)))
- (let (default-enable-multibyte-characters)
- (setq work-buffer (generate-new-buffer " *yenc-work*")))
+ (letf (((default-value 'enable-multibyte-characters) nil))
+ (setq work-buffer (generate-new-buffer " *yenc-work*")))
(while (< first last)
(setq char (char-after first))
(cond ((or (eq char ?\r)
(provide 'yenc)
-;;; arch-tag: 74df17e8-6fa8-4071-9f7d-54d548d79d9a
+;; arch-tag: 74df17e8-6fa8-4071-9f7d-54d548d79d9a
;;; yenc.el ends here