/*
* Dropbear SSH
*
* Copyright (c) 2002-2004 Matt Johnston
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE. */
#ifndef _CIRCBUFFER_H_
#define _CIRCBUFFER_H_
struct
circbuf {
unsigned
int
size;
unsigned
int
readpos;
unsigned
int
writepos;
unsigned
int
used;
unsigned
char
* data;
};
typedef
struct
circbuf circbuffer;
circbuffer * cbuf_new(unsigned
int
size);
void
cbuf_free(circbuffer * cbuf);
unsigned
int
cbuf_getused(circbuffer * cbuf);
/* how much data stored */
unsigned
int
cbuf_getavail(circbuffer * cbuf);
/* how much we can write */
unsigned
int
cbuf_readlen(circbuffer *cbuf);
/* max linear read len */
unsigned
int
cbuf_writelen(circbuffer *cbuf);
/* max linear write len */
unsigned
char
* cbuf_readptr(circbuffer *cbuf, unsigned
int
len);
unsigned
char
* cbuf_writeptr(circbuffer *cbuf, unsigned
int
len);
void
cbuf_incrwrite(circbuffer *cbuf, unsigned
int
len);
void
cbuf_incrread(circbuffer *cbuf, unsigned
int
len);
#endif