1 /* Listpack -- A lists of strings serialization format 2 * 3 * This file implements the specification you can find at: 4 * 5 * https://github.com/antirez/listpack 6 * 7 * Copyright (c) 2017, Salvatore Sanfilippo <antirez at gmail dot com> 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions are met: 12 * 13 * * Redistributions of source code must retain the above copyright notice, 14 * this list of conditions and the following disclaimer. 15 * * Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * * Neither the name of Redis nor the names of its contributors may be used 19 * to endorse or promote products derived from this software without 20 * specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #ifndef __LISTPACK_H 36 #define __LISTPACK_H 37 38 #include <stdint.h> 39 40 #define LP_INTBUF_SIZE 21 /* 20 digits of -2^63 + 1 null term = 21. */ 41 42 /* lpInsert() where argument possible values: */ 43 #define LP_BEFORE 0 44 #define LP_AFTER 1 45 #define LP_REPLACE 2 46 47 unsigned char *lpNew(void); 48 void lpFree(unsigned char *lp); 49 unsigned char *lpInsert(unsigned char *lp, unsigned char *ele, uint32_t size, unsigned char *p, int where, unsigned char **newp); 50 unsigned char *lpAppend(unsigned char *lp, unsigned char *ele, uint32_t size); 51 unsigned char *lpDelete(unsigned char *lp, unsigned char *p, unsigned char **newp); 52 uint32_t lpLength(unsigned char *lp); 53 unsigned char *lpGet(unsigned char *p, int64_t *count, unsigned char *intbuf); 54 unsigned char *lpFirst(unsigned char *lp); 55 unsigned char *lpLast(unsigned char *lp); 56 unsigned char *lpNext(unsigned char *lp, unsigned char *p); 57 unsigned char *lpPrev(unsigned char *lp, unsigned char *p); 58 uint32_t lpBytes(unsigned char *lp); 59 unsigned char *lpSeek(unsigned char *lp, long index); 60 61 #endif 62