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/*-
* Copyright (c) 2005 Ivan Voras <ivoras@gmail.com>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS 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 AUTHORS 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.
*
* $FreeBSD: release/9.1.0/sys/geom/virstor/binstream.h 172302 2007-09-23 07:34:23Z pjd $
*/
// $Id: binstream.h,v 1.1 2006/07/05 10:47:54 ivoras Exp $
#ifndef _BIN_STREAM_
#define _BIN_STREAM_
#ifndef uint8_t
#define uint8_t unsigned char
#endif
typedef struct {
unsigned char *data;
int pos;
} bin_stream_t;
/* "Open" a binary stream for reading */
void bs_open (bin_stream_t * bs, void *data);
/* "Reset" position in binary stream to zero */
void bs_reset (bin_stream_t * bs);
/* Write a zero-terminated string; return next position */
unsigned bs_write_str(bin_stream_t * bs, char *data);
/* Write an arbitrary buffer; return next position */
unsigned bs_write_buf(bin_stream_t * bs, char *data, unsigned data_size);
/* Write a 8bit uint; return next position. */
unsigned bs_write_u8(bin_stream_t * bs, uint8_t data);
/* Write a 16bit uint; return next position. */
unsigned bs_write_u16(bin_stream_t * bs, uint16_t data);
/* Write a 32bit uint; return next position. */
unsigned bs_write_u32(bin_stream_t * bs, uint32_t data);
/* Write a 64bit uint; return next position. */
unsigned bs_write_u64(bin_stream_t * bs, uint64_t data);
/*
* Read a null-terminated string from stream into a buffer; buf_size is size
* of the buffer, including the final \0. Returns buf pointer or NULL if
* garbage input.
*/
char *bs_read_str(bin_stream_t * bs, char *buf, unsigned buf_size);
/* Read an arbitrary buffer. */
void bs_read_buf(bin_stream_t * bs, char *buf, unsigned buf_size);
/* Read a 8bit uint * return it */
uint8_t bs_read_u8(bin_stream_t * bs);
/* Read a 16bit uint * return it */
uint16_t bs_read_u16(bin_stream_t * bs);
/* Read a 8bit uint * return it */
uint32_t bs_read_u32(bin_stream_t * bs);
/* Read a 8bit uint * return it */
uint64_t bs_read_u64(bin_stream_t * bs);
#endif