added KVStore

src/lib/KVStore.hx

@@ -0,0 +1,70 @@
+package lib;
+
+import haxe.Serializer;
+import haxe.Unserializer;
+import kernel.fs.FS;
+import haxe.ds.StringMap;
+
+/**
+	Key value store with persistence.
+**/
+class KVStore {
+	private var kvStore: StringMap<Dynamic> = new StringMap();
+	private final namespace:String;
+
+	public function new(namespace: String) {
+		this.namespace = namespace;
+	}
+
+	private static function getNamespaceFile(namespace: String): String {
+		return '/$namespace';
+	}
+
+	public function load() {
+		if (FS.exists(getNamespaceFile(namespace))){
+			var handle = FS.openRead("/" + namespace);
+			parseFile(handle.readAll());
+		}
+	}
+
+	public function save() {
+		var handle = FS.openWrite(getNamespaceFile(this.namespace));
+
+		handle.write(Serializer.run(this.kvStore));
+
+		handle.close();
+	}
+
+	private function parseFile(content: String) {
+		var unserializer = new Unserializer(content);
+		this.kvStore = unserializer.unserialize();
+	}
+
+	public inline function set(key: String, value: Dynamic) {
+		this.kvStore.set(key,value);
+	}
+
+	public inline function get<T>(key: String): Null<T> {
+		return this.kvStore.get(key);
+	}
+
+	public inline function exists(key: String): Bool {
+		return this.kvStore.exists(key);
+	}
+
+	public inline function clear() {
+		this.kvStore.clear();
+	}
+
+	public inline function remove(key: String): Bool {
+		return this.kvStore.remove(key);
+	}
+
+	public inline function keys(): Iterator<String> {
+		return this.kvStore.keys();
+	}
+
+	public inline function keyValueIterator():KeyValueIterator<String, Dynamic> {
+		return this.kvStore.keyValueIterator();
+	}
+}