diff options
Diffstat (limited to 'girepository/cmph/djb2_hash.c')
-rw-r--r-- | girepository/cmph/djb2_hash.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/girepository/cmph/djb2_hash.c b/girepository/cmph/djb2_hash.c new file mode 100644 index 00000000..d3b4330a --- /dev/null +++ b/girepository/cmph/djb2_hash.c @@ -0,0 +1,49 @@ +#include "djb2_hash.h" +#include <stdlib.h> + +djb2_state_t *djb2_state_new() +{ + djb2_state_t *state = (djb2_state_t *)malloc(sizeof(djb2_state_t)); + state->hashfunc = CMPH_HASH_DJB2; + return state; +} + +void djb2_state_destroy(djb2_state_t *state) +{ + free(state); +} + +cmph_uint32 djb2_hash(djb2_state_t *state, const char *k, cmph_uint32 keylen) +{ + register cmph_uint32 hash = 5381; + const unsigned char *ptr = (unsigned char *)k; + cmph_uint32 i = 0; + while (i < keylen) + { + hash = hash*33 ^ *ptr; + ++ptr, ++i; + } + return hash; +} + + +void djb2_state_dump(djb2_state_t *state, char **buf, cmph_uint32 *buflen) +{ + *buf = NULL; + *buflen = 0; + return; +} + +djb2_state_t *djb2_state_copy(djb2_state_t *src_state) +{ + djb2_state_t *dest_state = (djb2_state_t *)malloc(sizeof(djb2_state_t)); + dest_state->hashfunc = src_state->hashfunc; + return dest_state; +} + +djb2_state_t *djb2_state_load(const char *buf, cmph_uint32 buflen) +{ + djb2_state_t *state = (djb2_state_t *)malloc(sizeof(djb2_state_t)); + state->hashfunc = CMPH_HASH_DJB2; + return state; +} |