--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/dragdrop.c	Mon Aug 13 10:33:18 2007 +0200
@@ -0,0 +1,117 @@
+/* Drag'n'Drop definitions
+   created 03-may-98 by Oliver Graf <ograf@fga.de>
+   Copyright (C) 1998 Oliver Graf <ograf@fga.de>
+
+This file is part of XEmacs.
+
+XEmacs 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.
+
+XEmacs 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 XEmacs; see the file COPYING.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/* Synched up with: Not in FSF. */
+
+/* This file should be Mule-ized. */
+
+/* A short introduction to the new Drag'n'Drop Model:
+
+   Currently only drops from OffiX are implemented.
+
+   A drop generates a extended misc-user-event, as defined in events.[ch].
+   This event contains the same as a eval and a button event.
+   The function of a drop is set to 'dragdrop-drop-dispatch' which will be
+   defined in ../lisp/dragdrop.el.
+   The object of the misc-user-event has the following format:
+              ( TYPE . DATA )
+   TYPE  is one of 'dragdrop-MIME and 'dragdrop-URL
+   DATA  - if TYPE is 'dragdrop-URL, DATA is a list of valid URL strings. It
+	   is always a list, also if only one URL string is within it.
+	 - if TYPE is 'dragdrop-MIME, DATA is a list of MIME elements.
+	   Each can be a string or a list.
+	   if it is a string it is the pure MIME data complete with header
+	   and body.
+	   if it is a list it should look like
+	      ( MIME-TYPE MIME-ENCODING MIME-DATA )
+	   MIME-TYPE should have the format as required by tm-view, but
+	             is a string
+	   MIME-ENC  the same (a string in this case)
+	   MIME-DATA is a string
+*/
+
+#include <config.h>
+#include "lisp.h"
+#include "dragdrop.h"
+
+/* Drag'n'Drop data types known by XEmacs */
+Lisp_Object Qdragdrop_MIME;
+Lisp_Object Qdragdrop_URL;
+
+/* External defined functions to handle Drag'n'Drop */
+Lisp_Object Qdragdrop_drop_dispatch;
+
+/* from wget -- thanxx Hrvoje */
+/* A list of unsafe characters for encoding, as per RFC1738.  '@' and
+   ':' (not listed in RFC) were added because of user/password
+   encoding, and \033 for safe printing.  */
+
+#define URL_UNSAFE " <>\"#%{}|\\^~[]`@:\033"
+
+/* HEX digit -> ASCII char */
+#define HEXD2ASC(x) (((x) < 10) ? ((x) + '0') : ((x) - 10 + 'A'))
+
+/* Encodes the unsafe characters (listed in URL_UNSAFE) in a given
+   string, returning a malloc-ed %XX encoded string.
+   if method is != NULL it is prepended to the string. */
+char *
+dnd_url_hexify_string (const char *s, const char *m)
+{
+  const char *b;
+  char *p, *res;
+  int i;
+
+  b = s;
+  for (i = 0; *s; s++, i++)
+    if (strchr (URL_UNSAFE, *s))
+      i += 2; /* Two more characters (hex digits) */
+  if (m)
+    {
+      res = (char *)xmalloc (i + 1 + strlen (m));
+      strcpy (res, m);
+      p = res + strlen (m);
+    }
+  else
+    {
+      res = (char *)xmalloc (i + 1);
+      p = res;
+    }
+  for (s = b; *s; s++)
+    if (strchr (URL_UNSAFE, *s))
+      {
+	const unsigned char c = *s;
+	*p++ = '%';
+	*p++ = HEXD2ASC (c >> 4);
+	*p++ = HEXD2ASC (c & 0xf);
+      }
+    else
+      *p++ = *s;
+  *p = '\0';
+  return res;
+}
+
+void
+syms_of_dragdrop (void)
+{
+  defsymbol (&Qdragdrop_MIME, "dragdrop-MIME");
+  defsymbol (&Qdragdrop_URL,  "dragdrop-URL");
+  defsymbol (&Qdragdrop_drop_dispatch, "dragdrop-drop-dispatch");
+}