blob: 2f706c9ff8d6f81b302a7ccc873e34ffb65c4fb6 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
#include "sdbm_hash.h"
#include <stdlib.h>
sdbm_state_t *sdbm_state_new()
{
sdbm_state_t *state = (sdbm_state_t *)malloc(sizeof(sdbm_state_t));
state->hashfunc = CMPH_HASH_SDBM;
return state;
}
void sdbm_state_destroy(sdbm_state_t *state)
{
free(state);
}
cmph_uint32 sdbm_hash(sdbm_state_t *state, const char *k, cmph_uint32 keylen)
{
register cmph_uint32 hash = 0;
const unsigned char *ptr = (unsigned char *)k;
cmph_uint32 i = 0;
while(i < keylen) {
hash = *ptr + (hash << 6) + (hash << 16) - hash;
++ptr, ++i;
}
return hash;
}
void sdbm_state_dump(sdbm_state_t *state, char **buf, cmph_uint32 *buflen)
{
*buf = NULL;
*buflen = 0;
return;
}
sdbm_state_t *sdbm_state_copy(sdbm_state_t *src_state)
{
sdbm_state_t *dest_state = (sdbm_state_t *)malloc(sizeof(sdbm_state_t));
dest_state->hashfunc = src_state->hashfunc;
return dest_state;
}
sdbm_state_t *sdbm_state_load(const char *buf, cmph_uint32 buflen)
{
sdbm_state_t *state = (sdbm_state_t *)malloc(sizeof(sdbm_state_t));
state->hashfunc = CMPH_HASH_SDBM;
return state;
}
|
