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/*
* Copyright (c) 1995 Danny Gasparovski.
*
* Please read the file COPYRIGHT for the
* terms and conditions of the copyright.
*/
#ifndef _SBUF_H_
#define _SBUF_H_
#include "mbuf.h"
#include <stddef.h>
/* a SBuf is a simple circular buffer used to hold RX and TX data in a struct socket
*/
typedef struct sbuf {
unsigned sb_cc; /* actual chars in buffer */
unsigned sb_datalen; /* Length of data */
char* sb_wptr; /* write pointer. points to where the next
* bytes should be written in the sbuf */
char* sb_rptr; /* read pointer. points to where the next
* byte should be read from the sbuf */
char* sb_data; /* Actual data */
} SBufRec, *SBuf;
void sbuf_free (SBuf sb);
void sbuf_drop (SBuf sb, int num);
void sbuf_reserve (SBuf sb, int count);
void sbuf_append (struct socket *so, MBuf m);
void sbuf_appendsb(SBuf sb, MBuf m);
void sbuf_copy (SBuf sb, int offset, int length, char *to);
#define sbuf_flush(sb) sbuf_drop((sb),(sb)->sb_cc)
#define sbuf_space(sb) ((sb)->sb_datalen - (sb)->sb_cc)
#endif
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