X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/fec99105e2cb5ff47aa3c71c55eda771dc9c5eb2..b03f96dc5a6651d1dc84b81b2a15cad6908b9809:/lisp/gnus/yenc.el?ds=sidebyside

diff --git a/lisp/gnus/yenc.el b/lisp/gnus/yenc.el
index 4b01612d04..a1cfa99ef0 100644
--- a/lisp/gnus/yenc.el
+++ b/lisp/gnus/yenc.el
@@ -1,6 +1,6 @@
 ;;; 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 Free Software Foundation, Inc.
 
 ;; Author: Jesper Harder <harder@ifa.au.dk>
 ;; Keywords: yenc news
@@ -9,7 +9,7 @@
 
 ;; 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)
+;; 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,
@@ -55,6 +55,25 @@
        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."