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/* buffer.h
*
* Wiretap Library
* Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu>
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#ifndef __W_BUFFER_H__
#define __W_BUFFER_H__
#include <glib.h>
#include "ws_symbol_export.h"
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define SOME_FUNCTIONS_ARE_DEFINES
typedef struct Buffer {
guint8 *data;
gsize allocated;
gsize start;
gsize first_free;
} Buffer;
WS_DLL_PUBLIC
void ws_buffer_init(Buffer* buffer, gsize space);
WS_DLL_PUBLIC
void ws_buffer_free(Buffer* buffer);
WS_DLL_PUBLIC
void ws_buffer_assure_space(Buffer* buffer, gsize space);
WS_DLL_PUBLIC
void ws_buffer_append(Buffer* buffer, guint8 *from, gsize bytes);
WS_DLL_PUBLIC
void ws_buffer_remove_start(Buffer* buffer, gsize bytes);
#ifdef SOME_FUNCTIONS_ARE_DEFINES
# define ws_buffer_clean(buffer) ws_buffer_remove_start((buffer), ws_buffer_length(buffer))
# define ws_buffer_increase_length(buffer,bytes) (buffer)->first_free += (bytes)
# define ws_buffer_length(buffer) ((buffer)->first_free - (buffer)->start)
# define ws_buffer_start_ptr(buffer) ((buffer)->data + (buffer)->start)
# define ws_buffer_end_ptr(buffer) ((buffer)->data + (buffer)->first_free)
# define ws_buffer_append_buffer(buffer,src_buffer) ws_buffer_append((buffer), ws_buffer_start_ptr(src_buffer), ws_buffer_length(src_buffer))
#else
void ws_buffer_clean(Buffer* buffer);
void ws_buffer_increase_length(Buffer* buffer, unsigned int bytes);
unsigned int ws_buffer_length(Buffer* buffer);
guint8* ws_buffer_start_ptr(Buffer* buffer);
guint8* ws_buffer_end_ptr(Buffer* buffer);
void ws_buffer_append_buffer(Buffer* buffer, Buffer* src_buffer);
#endif
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif
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