fahhh

App/util/VarInt.h

@@ -0,0 +1,48 @@
+#pragma once
+
+#include "Network/api.h"
+
+namespace RBX {
+
+template<int WindowSize=4>
+struct VarInt {
+	static const unsigned char kDataMask = (1 << WindowSize) - 1;
+	static const unsigned char kFlagMask = (1 << WindowSize);
+
+	template<class OutputStream>
+	static void encode(OutputStream& out, unsigned int count) {
+		RBXASSERT(WindowSize < 8);
+
+		do {
+			unsigned char data = count & kDataMask;
+			count >>= WindowSize;
+			if (count) {
+				data |= kFlagMask;
+			}
+			out.WriteBits(&data, WindowSize + 1);
+		} while (count);
+	}
+
+	template<class InputStream>
+	static void decode(InputStream& in, unsigned int* out) {
+		RBXASSERT(WindowSize < 8);
+
+		unsigned int count = 0;
+		(*out) = 0;
+		unsigned char data;
+		do {
+			data = 0;
+			in.ReadBits(&data, WindowSize + 1);
+
+// TODO: The streaming.h include needs to be moved for it to be used here.
+//
+//			Network::readFastN<WindowSize + 1>( in, data );
+
+			(*out) |= (data & kDataMask) << (WindowSize * count);
+			count++;
+		} while (data & kFlagMask);
+	}
+
+};
+
+}