From fc8dcf1761da00c6359209703a9ea379ef7c5b8b Mon Sep 17 00:00:00 2001
From: xdavidwu <xdavidwuph@gmail.com>
Date: Sun, 15 May 2022 22:42:43 +0800
Subject: [PATCH] import evdev bindings from previous experiments

---
 evdev/libevdev.ha | 29 +++++++++++++++++++++++++++++
 evdev/types.ha    | 12 ++++++++++++
 2 files changed, 41 insertions(+)
 create mode 100644 evdev/libevdev.ha
 create mode 100644 evdev/types.ha

diff --git a/evdev/libevdev.ha b/evdev/libevdev.ha
new file mode 100644
index 0000000..3365b41
--- /dev/null
+++ b/evdev/libevdev.ha
@@ -0,0 +1,29 @@
+use io;
+use rt;
+use strings;
+
+export fn new_from_fd(fd: io::file) (rt::errno | libevdev) = {
+	let handle = null: libevdev;
+	const r = c_libevdev_new_from_fd(fd, &handle);
+	if (r < 0) {
+		return (-r): rt::errno;
+	};
+	return handle;
+};
+
+export fn get_name(dev: libevdev) const str = {
+	return strings::fromc(c_libevdev_get_name(dev));
+};
+
+export fn next_event(dev: libevdev, flags: uint) (rt::errno | input_event) = {
+	let ev = input_event { ... };
+	const r = c_libevdev_next_event(dev, flags, &ev);
+	if (r < 0) {
+		return (-r): rt::errno;
+	};
+	return ev;
+};
+
+@symbol("libevdev_new_from_fd") fn c_libevdev_new_from_fd(fd: int, dev: *libevdev) int;
+@symbol("libevdev_get_name") fn c_libevdev_get_name(dev: libevdev) *const char;
+@symbol("libevdev_next_event") fn c_libevdev_next_event(dev: libevdev, flags: uint, ev: *input_event) int;
diff --git a/evdev/types.ha b/evdev/types.ha
new file mode 100644
index 0000000..37c28e8
--- /dev/null
+++ b/evdev/types.ha
@@ -0,0 +1,12 @@
+use rt;
+
+export type libevdev = *void;
+
+export type input_event = struct {
+	time:	rt::timeval,
+	_type:	u16,
+	code:	u16,
+	value:	i32,
+};
+
+export def READ_FLAG_NORMAL: uint	= 2;
-- 
2.45.2