zipmap.h

   1 /* String -> String Map data structure optimized for size.
   2  *
   3  * See zipmap.c for more info.
   4  *
   5  * --------------------------------------------------------------------------
   6  *
   7  * Copyright (c) 2009-2010, 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 _ZIMMAP_H
  36 #define _ZIPMAP_H
  37
  38 unsigned char *zipmapNew(void);
  39 unsigned char *zipmapSet(unsigned char *zm, unsigned char *key, unsigned int klen, unsigned char *val, unsigned int vlen, int *update);
  40 unsigned char *zipmapDel(unsigned char *zm, unsigned char *key, unsigned int klen, int *deleted);
  41 unsigned char *zipmapRewind(unsigned char *zm);
  42 unsigned char *zipmapNext(unsigned char *zm, unsigned char **key, unsigned int *klen, unsigned char **value, unsigned int *vlen);
  43 int zipmapGet(unsigned char *zm, unsigned char *key, unsigned int klen, unsigned char **value, unsigned int *vlen);
  44 int zipmapExists(unsigned char *zm, unsigned char *key, unsigned int klen);
  45 unsigned int zipmapLen(unsigned char *zm);
  46 void zipmapRepr(unsigned char *p);
  47
  48 #endif