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/* buffer.h
*
* $Id: buffer.h,v 1.7 2000/08/11 13:32:35 deniel Exp $
*
* Wiretap Library
* Copyright (c) 1998 by Gilbert Ramirez <gram@xiexie.org>
*
* 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.
*
*/
#ifndef __W_BUFFER_H__
#define __W_BUFFER_H__
#define SOME_FUNCTIONS_ARE_DEFINES
#ifdef HAVE_WINSOCK_H
#include <winsock.h> /* to define u_char */
#endif
typedef struct Buffer {
u_char *data;
unsigned int allocated;
unsigned int start;
unsigned int first_free;
} Buffer;
void buffer_init(Buffer* buffer, unsigned int space);
void buffer_free(Buffer* buffer);
void buffer_assure_space(Buffer* buffer, unsigned int space);
void buffer_append(Buffer* buffer, u_char *from, unsigned int bytes);
void buffer_remove_start(Buffer* buffer, unsigned int bytes);
#ifdef SOME_FUNCTIONS_ARE_DEFINES
# define buffer_increase_length(buffer,bytes) (buffer)->first_free += (bytes)
# define buffer_length(buffer) ((buffer)->first_free - (buffer)->start)
# define buffer_start_ptr(buffer) ((buffer)->data + (buffer)->start)
# define buffer_end_ptr(buffer) ((buffer)->data + (buffer)->first_free)
#else
void buffer_increase_length(Buffer* buffer, unsigned int bytes);
unsigned int buffer_length(Buffer* buffer);
u_char* buffer_start_ptr(Buffer* buffer);
u_char* buffer_end_ptr(Buffer* buffer);
#endif
#endif
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