Merge lp:~tangent-org/libmemcached/1.0-build/ Build: jenkins-Libmemcached-187
[m6w6/libmemcached] / libhashkit / digest.cc
1 /* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
2 *
3 * HashKit library
4 *
5 * Copyright (C) 2010-2012 Data Differential, http://datadifferential.com/
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are
9 * met:
10 *
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * * Redistributions in binary form must reproduce the above
15 * copyright notice, this list of conditions and the following disclaimer
16 * in the documentation and/or other materials provided with the
17 * distribution.
18 *
19 * * The names of its contributors may not be used to endorse or
20 * promote products derived from this software without specific prior
21 * written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
27 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
29 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
30 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 *
35 */
36
37
38 #include <libhashkit/common.h>
39
40 uint32_t hashkit_digest(const hashkit_st *self, const char *key, size_t key_length)
41 {
42 return self->base_hash.function(key, key_length, self->base_hash.context);
43 }
44
45 uint32_t libhashkit_digest(const char *key, size_t key_length, hashkit_hash_algorithm_t hash_algorithm)
46 {
47 switch (hash_algorithm)
48 {
49 case HASHKIT_HASH_DEFAULT:
50 return libhashkit_one_at_a_time(key, key_length);
51 case HASHKIT_HASH_MD5:
52 return libhashkit_md5(key, key_length);
53 case HASHKIT_HASH_CRC:
54 return libhashkit_crc32(key, key_length);
55 case HASHKIT_HASH_FNV1_64:
56 return libhashkit_fnv1_64(key, key_length);
57 case HASHKIT_HASH_FNV1A_64:
58 return libhashkit_fnv1a_64(key, key_length);
59 case HASHKIT_HASH_FNV1_32:
60 return libhashkit_fnv1_32(key, key_length);
61 case HASHKIT_HASH_FNV1A_32:
62 return libhashkit_fnv1a_32(key, key_length);
63 case HASHKIT_HASH_HSIEH:
64 #ifdef HAVE_HSIEH_HASH
65 return libhashkit_hsieh(key, key_length);
66 #else
67 return 1;
68 #endif
69 case HASHKIT_HASH_MURMUR3:
70 return libhashkit_murmur3(key, key_length);
71
72 case HASHKIT_HASH_MURMUR:
73 #ifdef HAVE_MURMUR_HASH
74 return libhashkit_murmur(key, key_length);
75 #else
76 return 1;
77 #endif
78 case HASHKIT_HASH_JENKINS:
79 return libhashkit_jenkins(key, key_length);
80 case HASHKIT_HASH_CUSTOM:
81 case HASHKIT_HASH_MAX:
82 default:
83 if (DEBUG)
84 {
85 fprintf(stderr, "hashkit_hash_t was extended but libhashkit_generate_value was not updated\n");
86 fflush(stderr);
87 assert(0);
88 }
89 break;
90 }
91
92 return 1;
93 }