Update to 20180730 release.

byuu says:

These WIPs-within-WIPs are getting more and more broken ... this isn't
going the way I wanted.

But ... this time around, I've revamped the entire ruby API again, to
solve a bunch of tough problems that have always made using ruby really
clunky.

But there are *so many* ruby drivers that it's going to take a long
time to work through them all. This WIP is only going to run bsnes, and
only on FreeBSD, and only with some drivers.

hiro's Application::initialize() now calls hiro::initialize(), which you
define inside of your hiro apps. This lets you call
Application::setName(...) before anything else in hiro runs. This is
essential on Xorg to set program icons, for instance.

With the ruby rewrite and the change to hiro, I can get away from the
need to make everything in bsnes/higan pointers to objects, and can now
just declare them as regular objects.

ruby/input/input.hpp

@@ -0,0 +1,60 @@
+struct Input;
+
+struct InputDriver {
+  InputDriver(Input& super) : super(super) {}
+  virtual ~InputDriver() = default;
+
+  virtual auto create() -> bool { return true; }
+  virtual auto driverName() -> string { return "None"; }
+  virtual auto ready() -> bool { return true; }
+
+  virtual auto hasContext() -> bool { return false; }
+
+  virtual auto setContext(uintptr context) -> bool { return true; }
+
+  virtual auto acquired() -> bool { return false; }
+  virtual auto acquire() -> bool { return false; }
+  virtual auto release() -> bool { return false; }
+  virtual auto poll() -> vector<shared_pointer<nall::HID::Device>> { return {}; }
+  virtual auto rumble(uint64_t id, bool enable) -> bool { return false; }
+
+protected:
+  Input& super;
+  friend class Input;
+
+  uintptr context = 0;
+};
+
+struct Input {
+  static auto hasDrivers() -> vector<string>;
+  static auto hasDriver(string driver) -> bool { return (bool)hasDrivers().find(driver); }
+  static auto optimalDriver() -> string;
+  static auto safestDriver() -> string;
+
+  Input() : self(*this) {}
+  explicit operator bool() const { return (bool)driver; }
+  auto reset() -> void { driver.reset(); }
+  auto create(string driver = "") -> bool;
+  auto driverName() -> string { return driver->driverName(); }
+  auto ready() -> bool { return driver->ready(); }
+
+  auto hasContext() -> bool { return driver->hasContext(); }
+
+  auto context() -> uintptr { return driver->context; }
+
+  auto setContext(uintptr context) -> bool;
+
+  auto acquired() -> bool;
+  auto acquire() -> bool;
+  auto release() -> bool;
+  auto poll() -> vector<shared_pointer<nall::HID::Device>>;
+  auto rumble(uint64_t id, bool enable) -> bool;
+
+  auto onChange(const function<void (shared_pointer<nall::HID::Device>, uint, uint, int16_t, int16_t)>&) -> void;
+  auto doChange(shared_pointer<nall::HID::Device> device, uint group, uint input, int16_t oldValue, int16_t newValue) -> void;
+
+protected:
+  Input& self;
+  unique_pointer<InputDriver> driver;
+  function<void (shared_pointer<nall::HID::Device> device, uint group, uint input, int16_t oldValue, int16_t newValue)> change;
+};