nes-proj/core/net/uipbuf.c

135 lines
3.9 KiB
C

/*
* Copyright (c) 2004, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
* Author: Adam Dunkels <adam@sics.se>
*
* $Id: uipbuf.c,v 1.1 2006/06/17 22:41:19 adamdunkels Exp $
*/
#if 0 /* This whole file is #ifdef'd out - the contents are to be removed */
#include "net/uipbuf.h"
#include <string.h>
/*---------------------------------------------------------------------------*/
void
uipbuf_setup(struct uipbuf_buffer *buf,
u8_t *bufptr, u16_t bufsize)
{
buf->buffer = buf->ptr = bufptr;
buf->bufsize = buf->left = bufsize;
}
/*---------------------------------------------------------------------------*/
u8_t
uipbuf_bufdata(struct uipbuf_buffer *buf, u16_t len,
u8_t **dataptr, u16_t *datalen)
{
if(*datalen < buf->left) {
memcpy(buf->ptr, *dataptr, *datalen);
buf->ptr += *datalen;
buf->left -= *datalen;
*dataptr += *datalen;
*datalen = 0;
return UIPBUF_NOT_FULL;
} else if(*datalen == buf->left) {
memcpy(buf->ptr, *dataptr, *datalen);
buf->ptr += *datalen;
buf->left = 0;
*dataptr += *datalen;
*datalen = 0;
return UIPBUF_FULL;
} else {
memcpy(buf->ptr, *dataptr, buf->left);
buf->ptr += buf->left;
*datalen -= buf->left;
*dataptr += buf->left;
buf->left = 0;
return UIPBUF_FULL;
}
}
/*---------------------------------------------------------------------------*/
u8_t
uipbuf_bufto(register struct uipbuf_buffer *buf, u8_t endmarker,
register u8_t **dataptr, register u16_t *datalen)
{
u8_t c;
/*
int len;
ptr = memchr(*dataptr, endmarker, *datalen);
if(ptr != NULL) {
len = ptr - *dataptr;
} else {
len = *datalen;
}
memcpy(buf->ptr, *dataptr, len);
*dataptr += len;
*datalen -= len;
buf->ptr += len;
*/
while(buf->left > 0 && *datalen > 0) {
c = *buf->ptr = **dataptr;
++*dataptr;
++buf->ptr;
--*datalen;
--buf->left;
if(c == endmarker) {
return UIPBUF_FOUND;
}
}
if(*datalen == 0) {
return UIPBUF_NOT_FOUND;
}
while(*datalen > 0) {
c = **dataptr;
--*datalen;
++*dataptr;
if(c == endmarker) {
return UIPBUF_FOUND | UIPBUF_FULL;
}
}
return UIPBUF_FULL;
}
/*----------------------------------------------------------------------------*/
u16_t
uipbuf_len(struct uipbuf_buffer *buf)
{
return buf->bufsize - buf->left;
}
/*----------------------------------------------------------------------------*/
#endif /* 0 */