init

vid.go

@@ -0,0 +1,38 @@
+package core
+
+import (
+  "encoding/hex"
+  "fmt"
+)
+
+type VID [16]byte
+
+var byteGroups = []int{8, 4, 4, 4, 12}
+
+// TODO: leverage a full functional UUID library
+func UUIDToVID(uuid string) (v VID, err error) {
+  text := []byte(uuid)
+  if len(text) < 32 {
+		err = fmt.Errorf("uuid: invalid UUID string: %s", text)
+		return
+	}
+
+	b := v[:]
+
+	for _, byteGroup := range byteGroups {
+		if text[0] == '-' {
+			text = text[1:]
+		}
+
+		_, err = hex.Decode(b[:byteGroup/2], text[:byteGroup])
+
+		if err != nil {
+			return
+		}
+
+		text = text[byteGroup:]
+		b = b[byteGroup/2:]
+	}
+
+	return
+}