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1 /* Listpack -- A lists of strings serialization format
3 * This file implements the specification you can find at:
5 * https://github.com/antirez/listpack
7 * Copyright (c) 2017, Salvatore Sanfilippo <antirez at gmail dot com>
8 * All rights reserved.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions are met:
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.
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.
35 #ifndef __LISTPACK_H
36 #define __LISTPACK_H
38 #include <stdint.h>
40 #define LP_INTBUF_SIZE 21 /* 20 digits of -2^63 + 1 null term = 21. */
42 /* lpInsert() where argument possible values: */
43 #define LP_BEFORE 0
44 #define LP_AFTER 1
45 #define LP_REPLACE 2
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);