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-rw-r--r--ext/tdb/hash_functions.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/ext/tdb/hash_functions.c b/ext/tdb/hash_functions.c
new file mode 100644
index 0000000..7cf69f1
--- /dev/null
+++ b/ext/tdb/hash_functions.c
@@ -0,0 +1,40 @@
+#include "rbtdb.h"
+
+#define HASH_FN(fn) \
+static VALUE fn(VALUE self,VALUE str) \
+{ \
+        TDB_DATA data; \
+        StringValue(str); \
+        data.dptr = (unsigned char *)RSTRING_PTR(str); \
+        data.dsize = RSTRING_LEN(str); \
+        return UINT2NUM(rbtdb_##fn(&data)); \
+}
+
+HASH_FN(murmur1)
+HASH_FN(murmur1_aligned)
+HASH_FN(murmur2)
+HASH_FN(murmur2a)
+HASH_FN(murmur2_neutral)
+HASH_FN(murmur2_aligned)
+HASH_FN(fnv1a)
+HASH_FN(djb2)
+HASH_FN(djb3)
+HASH_FN(jenkins_lookup3)
+
+#define HASH_M(fn) rb_define_method(mHashFunctions, "tdb_hash_"#fn, fn, 1)
+void rbtdb_init_tdb_hash_functions(void)
+{
+        VALUE cTDB = rb_const_get(rb_cObject, rb_intern("TDB"));
+        VALUE mHashFunctions = rb_define_module_under(cTDB, "HashFunctions");
+
+        HASH_M(murmur1);
+        HASH_M(murmur1_aligned);
+        HASH_M(murmur2);
+        HASH_M(murmur2a);
+        HASH_M(murmur2_neutral);
+        HASH_M(murmur2_aligned);
+        HASH_M(fnv1a);
+        HASH_M(djb2);
+        HASH_M(djb3);
+        HASH_M(jenkins_lookup3);
+}