forked from osmocom/wireshark
![Guy Harris](/assets/img/avatar_default.png)
they have LF at the end of the line on UN*X and CR/LF on Windows; hopefully this means that if a CR/LF version is checked in on Windows, the CRs will be stripped so that they show up only when checked out on Windows, not on UN*X. svn path=/trunk/; revision=11400
117 lines
2.6 KiB
C
117 lines
2.6 KiB
C
/* ptvcursor.c
|
|
*
|
|
* Proto Tree TVBuff cursor
|
|
* Gilbert Ramirez <gram@alumni.rice.edu>
|
|
*
|
|
* $Id$
|
|
*
|
|
* Ethereal - Network traffic analyzer
|
|
* By Gerald Combs <gerald@zing.org>
|
|
* Copyright 2000 Gerald Combs
|
|
*
|
|
* This program 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
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program 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 this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#include "ptvcursor.h"
|
|
|
|
|
|
struct ptvcursor {
|
|
proto_tree *tree;
|
|
tvbuff_t *tvb;
|
|
gint offset;
|
|
};
|
|
|
|
|
|
/* Allocates an initializes a ptvcursor_t with 3 variables:
|
|
* proto_tree, tvbuff, and offset. */
|
|
ptvcursor_t*
|
|
ptvcursor_new(proto_tree *tree, tvbuff_t *tvb, gint offset)
|
|
{
|
|
ptvcursor_t *ptvc;
|
|
|
|
ptvc = g_new(ptvcursor_t, 1);
|
|
ptvc->tree = tree;
|
|
ptvc->tvb = tvb;
|
|
ptvc->offset = offset;
|
|
return ptvc;
|
|
}
|
|
|
|
|
|
/* Gets data from tvbuff, adds it to proto_tree, increments offset,
|
|
* and returns proto_item* */
|
|
proto_item*
|
|
ptvcursor_add(ptvcursor_t *ptvc, int hf, gint length, gboolean endianness)
|
|
{
|
|
proto_item *item;
|
|
|
|
item = ptvcursor_add_no_advance(ptvc, hf, length, endianness);
|
|
ptvc->offset += proto_item_get_len(item);
|
|
return item;
|
|
}
|
|
|
|
/* Gets data from tvbuff, adds it to proto_tree, *DOES NOT* increment
|
|
* offset, and returns proto_item* */
|
|
proto_item*
|
|
ptvcursor_add_no_advance(ptvcursor_t* ptvc, int hf, gint length,
|
|
gboolean endianness)
|
|
{
|
|
proto_item *item;
|
|
|
|
item = proto_tree_add_item(ptvc->tree, hf, ptvc->tvb, ptvc->offset,
|
|
length, endianness);
|
|
|
|
return item;
|
|
}
|
|
|
|
/* Advance the ptvcursor's offset within its tvbuff without
|
|
* adding anything to the proto_tree. */
|
|
void
|
|
ptvcursor_advance(ptvcursor_t* ptvc, gint length)
|
|
{
|
|
ptvc->offset += length;
|
|
}
|
|
|
|
/* Frees memory for ptvcursor_t, but nothing deeper than that. */
|
|
void
|
|
ptvcursor_free(ptvcursor_t *ptvc)
|
|
{
|
|
g_free(ptvc);
|
|
}
|
|
/* Returns tvbuff. */
|
|
tvbuff_t*
|
|
ptvcursor_tvbuff(ptvcursor_t* ptvc)
|
|
{
|
|
return ptvc->tvb;
|
|
}
|
|
|
|
/* Returns current offset. */
|
|
gint
|
|
ptvcursor_current_offset(ptvcursor_t* ptvc)
|
|
{
|
|
return ptvc->offset;
|
|
}
|
|
|
|
proto_tree*
|
|
ptvcursor_tree(ptvcursor_t* ptvc)
|
|
{
|
|
return ptvc->tree;
|
|
}
|
|
|
|
void
|
|
ptvcursor_set_tree(ptvcursor_t* ptvc, proto_tree *tree)
|
|
{
|
|
ptvc->tree = tree;
|
|
}
|