replace function

FossilOrigin-Name: 6fdd1d6c766912e7944940595f6d99287b862314c725f5fc0320695cf16041e4

src/cw/cw_ktv_replace.c

@@ -0,0 +1,31 @@
+#include "ktv.h"
+#include "cw.h"
+
+#include "log.h"
+#include "dbg.h"
+
+cw_KTV_t * cw_ktv_replace(mavl_t kvtstore, const char *key, const struct cw_Type *type,
+			const uint8_t * data, int len)
+{
+	cw_KTV_t mdata, *mresult;
+	int exists;
+
+	mdata.key=cw_strdup(key);
+	if (!mdata.key){
+		cw_log(LOG_ERR, "Can't allocate memory for KTV key %s: %s",
+				key,strerror(errno));
+		return NULL;
+	}
+
+	mresult = type->get(&mdata,data,len);
+	if (!mresult){
+		cw_log(LOG_ERR, "Can't create kvstore element for key %s of type %s: %s",
+				key,type->name, strerror(errno));
+		free(mdata.key);
+		return NULL;
+	}
+	
+	mresult = mavl_replace(kvtstore, &mdata, &exists);
+
+	return mresult;
+}