git.m6w6.name Git - m6w6/libmemcached/blob - libhashkit-1.0/hashkit.hpp

   1 /*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
   2  *
   3  *  HashKit library
   4  *
   5  *  Copyright (C) 2011-2012 Data Differential, http://datadifferential.com/
   6  *  Copyright (C) 2006-2010 Brian Aker All rights reserved.
   7  *
   8  *  Redistribution and use in source and binary forms, with or without
   9  *  modification, are permitted provided that the following conditions are
  10  *  met:
  11  *
  12  *      * Redistributions of source code must retain the above copyright
  13  *  notice, this list of conditions and the following disclaimer.
  14  *
  15  *      * Redistributions in binary form must reproduce the above
  16  *  copyright notice, this list of conditions and the following disclaimer
  17  *  in the documentation and/or other materials provided with the
  18  *  distribution.
  19  *
  20  *      * The names of its contributors may not be used to endorse or
  21  *  promote products derived from this software without specific prior
  22  *  written permission.
  23  *
  24  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  25  *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  26  *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  27  *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  28  *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  29  *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  30  *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  31  *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  32  *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  33  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  34  *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  35  *
  36  */
  37
  38
  39 #pragma once
  40
  41 #include <libhashkit-1.0/hashkit.h>
  42 #include <string>
  43
  44 class Hashkit {
  45
  46 public:
  47
  48   Hashkit()
  49   {
  50     hashkit_create(&self);
  51   }
  52
  53   Hashkit(const Hashkit& source)
  54   {
  55     hashkit_clone(&self, &source.self);
  56   }
  57
  58   Hashkit& operator=(const Hashkit& source)
  59   {
  60     hashkit_free(&self);
  61     hashkit_clone(&self, &source.self);
  62
  63     return *this;
  64   }
  65
  66   friend bool operator==(const Hashkit &left, const Hashkit &right)
  67   {
  68     return hashkit_compare(&left.self, &right.self);
  69   }
  70
  71   uint32_t digest(std::string& str)
  72   {
  73     return hashkit_digest(&self, str.c_str(), str.length());
  74   }
  75
  76   uint32_t digest(const char *key, size_t key_length)
  77   {
  78     return hashkit_digest(&self, key, key_length);
  79   }
  80
  81   hashkit_return_t set_function(hashkit_hash_algorithm_t hash_algorithm)
  82   {
  83     return hashkit_set_function(&self, hash_algorithm);
  84   }
  85
  86   hashkit_return_t set_distribution_function(hashkit_hash_algorithm_t hash_algorithm)
  87   {
  88     return hashkit_set_function(&self, hash_algorithm);
  89   }
  90
  91   ~Hashkit()
  92   {
  93     hashkit_free(&self);
  94   }
  95 private:
  96
  97   hashkit_st self;
  98 };