X-Git-Url: https://pd.if.org/git/?p=nbds;a=blobdiff_plain;f=datatype%2Fnstring.c;fp=datatype%2Fnstring.c;h=f4f6f3811474ad058438a9600b5526919c0af26b;hp=0000000000000000000000000000000000000000;hb=11572afcaf218cfcbb8e9747f22739f75252c4f4;hpb=f1098084dd54496a61f9a254541190df77edd166

diff --git a/datatype/nstring.c b/datatype/nstring.c
new file mode 100644
index 0000000..f4f6f38
--- /dev/null
+++ b/datatype/nstring.c
@@ -0,0 +1,27 @@
+#include "common.h"
+#include "nstring.h"
+#include "murmur.h"
+#include "mem.h"
+
+const datatype_t DATATYPE_NSTRING = { (cmp_fun_t)ns_cmp, (hash_fun_t)ns_hash, (clone_fun_t)ns_dup };
+
+nstring_t *ns_alloc (uint32_t len) {
+    nstring_t *ns = nbd_malloc(sizeof(nstring_t) + len);
+    ns->len = len;
+    return ns;
+}
+
+int ns_cmp (const nstring_t *ns1, const nstring_t *ns2) {
+    int d = memcmp(ns1->data, ns2->data, (ns1->len < ns2->len) ? ns1->len : ns1->len);
+    return (d == 0) ? ns1->len - ns2->len : d;
+}
+
+uint32_t ns_hash (const nstring_t *ns) {
+    return murmur32(ns->data, ns->len);
+}
+
+nstring_t *ns_dup (const nstring_t *ns1) {
+    nstring_t *ns2 = ns_alloc(ns1->len);
+    memcpy(ns2->data, ns1->data, ns1->len);
+    return ns2;
+}