buffer.h

网络端口的服务程序

/*
    Portserver - Use RTERM protocol to serve serial ports over a network
    Copyright (C) 1998 Kenn Humborg

    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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#ifndef BUFFER_H
#define BUFFER_H

#include "status.h"

struct Buffer {
   char *data;
   int length;
   int data_length;
};

/* Adds data to a buffer.  Returns TRUE when buffer is full */
int BufferAdd(struct Buffer *buf, char *data, int data_len, int *bytes_added);

/* Removes data from a buffer.  Returns TRUE when the buffer is empty */
int BufferRemove(struct Buffer *buf, int data_len);

/* Create a buffer, returns NULL if error */
STATUS BufferCreate(int buffer_size, struct Buffer **new_buffer);

void BufferDelete(struct Buffer *buf);

#endif /* BUFFER_H */