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Diffstat (limited to 'girepository/cmph/djb2_hash.c')
-rw-r--r--girepository/cmph/djb2_hash.c49
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;
+}