Import subrepo hid/:hid at 3ac1005fe3e874bef850ab733fe1a09bc36b91c5

1 files changed, 51 insertions, 0 deletions

diff --git a/hid/src/devices.rs b/hid/src/devices.rs
new file mode 100644
index 0000000..002ffa9
--- /dev/null
+++ b/hid/src/devices.rs
@@ -0,0 +1,51 @@
+use std::marker::PhantomData;
+
+use sys::*;
+use Device;
+
+/// An iterator over the available devices.
+pub struct Devices<'a> {
+	ptr: *mut hid_device_info,
+	cur: *mut hid_device_info,
+
+	_marker: PhantomData<&'a ()>,
+}
+
+impl<'a> Devices<'a> {
+	#[doc(hidden)]
+	pub unsafe fn new(vendor: Option<u16>, product: Option<u16>) -> Self {
+		let list = hid_enumerate(vendor.unwrap_or(0), product.unwrap_or(0));
+
+		Devices {
+			ptr: list,
+			cur: list,
+
+			_marker: PhantomData,
+		}
+	}
+}
+
+impl<'a> Iterator for Devices<'a> {
+	type Item = Device<'a>;
+
+	fn next(&mut self) -> Option<Self::Item> {
+		if self.cur.is_null() {
+			return None;
+		}
+
+		unsafe {
+			let info = Device::new(self.cur);
+			self.cur = (*self.cur).next;
+
+			Some(info)
+		}
+	}
+}
+
+impl<'a> Drop for Devices<'a> {
+	fn drop(&mut self) {
+		unsafe {
+			hid_free_enumeration(self.ptr);
+		}
+	}
+}