X-Git-Url: http://git.chise.org/gitweb/?a=blobdiff_plain;f=lisp%2Fgnus-util.el;h=e2246d4232407d72fbc8722dea995fcb70c0c314;hb=36bd162f4f7cd40453b8683e796730836c352b2a;hp=8b4f68741f21ab3b8a317f4c3d8f595d481bcdfe;hpb=1822f1a902ecb304afee5697021eeab62c77bd99;p=elisp%2Fgnus.git-

diff --git a/lisp/gnus-util.el b/lisp/gnus-util.el
index 8b4f687..e2246d4 100644
--- a/lisp/gnus-util.el
+++ b/lisp/gnus-util.el
@@ -1207,6 +1207,38 @@ sure of changing the value of `foo'."
 If you find some problem with the directory separator character, try
 \"[/\\\\\]\" for some systems.")
 
+(defun gnus-url-unhex (x)
+  (if (> x ?9)
+      (if (>= x ?a)
+	  (+ 10 (- x ?a))
+	(+ 10 (- x ?A)))
+    (- x ?0)))
+
+(defun gnus-url-unhex-string (str &optional allow-newlines)
+  "Remove %XXX embedded spaces, etc in a url.
+If optional second argument ALLOW-NEWLINES is non-nil, then allow the
+decoding of carriage returns and line feeds in the string, which is normally
+forbidden in URL encoding."
+  (setq str (or (mm-subst-char-in-string ?+ ?  str) ""))
+  (let ((tmp "")
+	(case-fold-search t))
+    (while (string-match "%[0-9a-f][0-9a-f]" str)
+      (let* ((start (match-beginning 0))
+	     (ch1 (gnus-url-unhex (elt str (+ start 1))))
+	     (code (+ (* 16 ch1)
+		      (gnus-url-unhex (elt str (+ start 2))))))
+	(setq tmp (concat
+		   tmp (substring str 0 start)
+		   (cond
+		    (allow-newlines
+		     (char-to-string code))
+		    ((or (= code ?\n) (= code ?\r))
+		     " ")
+		    (t (char-to-string code))))
+	      str (substring str (match-end 0)))))
+    (setq tmp (concat tmp str))
+    tmp))
+
 (provide 'gnus-util)
 
 ;;; gnus-util.el ends here