1 /*- 2 * Copyright (c) 2003, 2004 David Young. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 3. The name of David Young may not be used to endorse or promote 13 * products derived from this software without specific prior 14 * written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY DAVID YOUNG ``AS IS'' AND ANY 17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 18 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 19 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL DAVID 20 * YOUNG BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 21 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 22 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 27 * OF SUCH DAMAGE. 28 */ 29 30 #ifndef _CPACK_H 31 #define _CPACK_H 32 33 struct cpack_state { 34 const uint8_t *c_buf; 35 const uint8_t *c_next; 36 size_t c_len; 37 }; 38 39 int cpack_init(struct cpack_state *, const uint8_t *, size_t); 40 41 int cpack_uint8(struct cpack_state *, uint8_t *); 42 int cpack_uint16(struct cpack_state *, uint16_t *); 43 int cpack_uint32(struct cpack_state *, uint32_t *); 44 int cpack_uint64(struct cpack_state *, uint64_t *); 45 46 const uint8_t *cpack_next_boundary(const uint8_t *buf, const uint8_t *p, size_t alignment); 47 const uint8_t *cpack_align_and_reserve(struct cpack_state *cs, size_t wordsize); 48 49 #define cpack_int8(__s, __p) cpack_uint8((__s), (uint8_t*)(__p)) 50 #define cpack_int16(__s, __p) cpack_uint16((__s), (uint16_t*)(__p)) 51 #define cpack_int32(__s, __p) cpack_uint32((__s), (uint32_t*)(__p)) 52 #define cpack_int64(__s, __p) cpack_uint64((__s), (uint64_t*)(__p)) 53 54 extern int cpack_advance(struct cpack_state *, const size_t); 55 56 #endif /* _CPACK_H */ 57