apps: Add mouse

A simple mouse packet reader.

apps/CMakeLists.txt

@@ -44,3 +44,4 @@ luna_app(gol.cpp gol)
 luna_app(buffer-test.cpp buffer-test)
 luna_app(socket-test.cpp socket-test)
 luna_app(socket-client.cpp socket-client)
+luna_app(mouse.cpp mouse)

apps/mouse.cpp

@@ -0,0 +1,16 @@
+#include <moon/Mouse.h>
+#include <os/File.h>
+
+Result<int> luna_main(int, char**)
+{
+    auto mouse = TRY(os::File::open("/dev/mouse", os::File::ReadOnly));
+    mouse->set_buffer(os::File::NotBuffered);
+
+    while (1)
+    {
+        moon::MousePacket packet;
+        TRY(mouse->read_typed(packet));
+
+        os::println("Mouse packet: xdelta=%d, ydelta=%d, buttons=%d", packet.xdelta, packet.ydelta, packet.buttons);
+    }
+}