1 /*- 2 * Copyright (c) 2005 Ivan Voras <ivoras@gmail.com> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 // $Id: binstream.h,v 1.1 2006/07/05 10:47:54 ivoras Exp $ 30 31 32 #ifndef _BIN_STREAM_ 33 #define _BIN_STREAM_ 34 35 #ifndef uint8_t 36 #define uint8_t unsigned char 37 #endif 38 39 typedef struct { 40 unsigned char *data; 41 int pos; 42 } bin_stream_t; 43 44 45 /* "Open" a binary stream for reading */ 46 void bs_open (bin_stream_t * bs, void *data); 47 48 /* "Reset" position in binary stream to zero */ 49 void bs_reset (bin_stream_t * bs); 50 51 52 /* Write a zero-terminated string; return next position */ 53 unsigned bs_write_str(bin_stream_t * bs, char *data); 54 55 /* Write an arbitrary buffer; return next position */ 56 unsigned bs_write_buf(bin_stream_t * bs, char *data, unsigned data_size); 57 58 /* Write a 8bit uint; return next position. */ 59 unsigned bs_write_u8(bin_stream_t * bs, uint8_t data); 60 61 /* Write a 16bit uint; return next position. */ 62 unsigned bs_write_u16(bin_stream_t * bs, uint16_t data); 63 64 /* Write a 32bit uint; return next position. */ 65 unsigned bs_write_u32(bin_stream_t * bs, uint32_t data); 66 67 /* Write a 64bit uint; return next position. */ 68 unsigned bs_write_u64(bin_stream_t * bs, uint64_t data); 69 70 71 /* 72 * Read a null-terminated string from stream into a buffer; buf_size is size 73 * of the buffer, including the final \0. Returns buf pointer or NULL if 74 * garbage input. 75 */ 76 char *bs_read_str(bin_stream_t * bs, char *buf, unsigned buf_size); 77 78 /* Read an arbitrary buffer. */ 79 void bs_read_buf(bin_stream_t * bs, char *buf, unsigned buf_size); 80 81 /* Read a 8bit uint * return it */ 82 uint8_t bs_read_u8(bin_stream_t * bs); 83 84 /* Read a 16bit uint * return it */ 85 uint16_t bs_read_u16(bin_stream_t * bs); 86 87 /* Read a 8bit uint * return it */ 88 uint32_t bs_read_u32(bin_stream_t * bs); 89 90 /* Read a 8bit uint * return it */ 91 uint64_t bs_read_u64(bin_stream_t * bs); 92 93 #endif 94