implement a local sync server

taskchampion/src/utils.rs

@@ -0,0 +1,39 @@
+use std::convert::TryInto;
+use uuid::Uuid;
+
+/// A representation of a UUID as a key.  This is just a newtype wrapping the 128-bit packed form
+/// of a UUID.
+#[derive(Debug, PartialEq, Eq, PartialOrd, Ord)]
+pub(crate) struct Key(uuid::Bytes);
+
+impl From<&[u8]> for Key {
+    fn from(bytes: &[u8]) -> Key {
+        Key(bytes.try_into().unwrap())
+    }
+}
+
+impl From<&Uuid> for Key {
+    fn from(uuid: &Uuid) -> Key {
+        let key = Key(*uuid.as_bytes());
+        key
+    }
+}
+
+impl From<Uuid> for Key {
+    fn from(uuid: Uuid) -> Key {
+        let key = Key(*uuid.as_bytes());
+        key
+    }
+}
+
+impl From<Key> for Uuid {
+    fn from(key: Key) -> Uuid {
+        Uuid::from_bytes(key.0)
+    }
+}
+
+impl AsRef<[u8]> for Key {
+    fn as_ref(&self) -> &[u8] {
+        &self.0[..]
+    }
+}