/*
 * Copyright (c) 1995 Danny Gasparovski.
 *
 * Please read the file COPYRIGHT for the
 * terms and conditions of the copyright.
 */

#ifndef _SBUF_H_
#define _SBUF_H_

#define sbflush(sb) sbdrop((sb),(sb)->sb_cc)
#define sbspace(sb) ((sb)->sb_datalen - (sb)->sb_cc)

struct sbuf
{
    u_int   sb_cc;          /* actual chars in buffer */
    u_int   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 */
};

void sbfree (struct sbuf *);
void sbdrop (struct sbuf *, int);
void sbreserve (PNATState, struct sbuf *, int);
void sbappend (PNATState, struct socket *, struct mbuf *);
void sbappendsb (PNATState, struct sbuf *, struct mbuf *);
void sbcopy (struct sbuf *, int, int, char *);

#endif