3 * Proto Tree TVBuff cursor
4 * Gilbert Ramirez <gram@alumni.rice.edu>
6 * $Id: ptvcursor.h,v 1.7 2002/08/28 21:00:41 jmayer Exp $
8 * Ethereal - Network traffic analyzer
9 * By Gerald Combs <gerald@ethereal.com>
10 * Copyright 2000 Gerald Combs
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
27 #ifndef __PTVCURSOR_H__
28 #define __PTVCURSOR_H__
35 #include <epan/packet.h>
37 typedef struct ptvcursor ptvcursor_t;
39 /* Allocates an initializes a ptvcursor_t with 3 variables:
40 * proto_tree, tvbuff, and offset. */
42 ptvcursor_new(proto_tree*, tvbuff_t*, gint);
44 /* Gets data from tvbuff, adds it to proto_tree, increments offset,
45 * and returns proto_item* */
47 ptvcursor_add(ptvcursor_t*, int hf, gint length, gboolean endianness);
50 /* Gets data from tvbuff, adds it to proto_tree, *DOES NOT* increment
51 * offset, and returns proto_item* */
53 ptvcursor_add_no_advance(ptvcursor_t*, int hf, gint length, gboolean endianness);
55 /* Advance the ptvcursor's offset within its tvbuff without
56 * adding anything to the proto_tree. */
58 ptvcursor_advance(ptvcursor_t* ptvc, gint length);
60 /* Frees memory for ptvcursor_t, but nothing deeper than that. */
62 ptvcursor_free(ptvcursor_t*);
66 ptvcursor_tvbuff(ptvcursor_t*);
68 /* Returns current offset. */
70 ptvcursor_current_offset(ptvcursor_t*);
72 /* Returns the proto_tree* */
74 ptvcursor_tree(ptvcursor_t* ptvc);
76 /* Sets a new proto_tree* for the ptvcursor_t */
78 ptvcursor_set_tree(ptvcursor_t* ptvc, proto_tree *tree);
80 #endif /* __PTVCURSOR_H__ */