From f0ee83ebbbea2007b53b5ccf648d721b2cac2eb7 Mon Sep 17 00:00:00 2001
From: Asmir A <asmir.abdulahovic@gmail.com>
Date: Mon, 4 Sep 2023 19:34:00 +0200
Subject: [PATCH] main: add inputDeviceOpenAndGrab fun

---
 src/main.zig | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/src/main.zig b/src/main.zig
index e9b484f..51cd71b 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -35,7 +35,17 @@ fn write_esc() !void {
     try event_write(&EscUp);
 }
 
-fn device_open() !void {}
+fn inputDeviceOpenAndGrab(dev_name: []const u8) !?*c.libevdev {
+    const dev_fd = try std.fs.openFileAbsolute(dev_name, .{});
+    const dev = c.libevdev_new();
+    if (c.libevdev_set_fd(dev, dev_fd.handle) < 0) {
+        return error.libevdevCreateFail;
+    }
+    if (c.libevdev_grab(dev, c.LIBEVDEV_GRAB) < 0) {
+        return error.libevdevGrabFail;
+    }
+    return dev;
+}
 
 pub fn main() !void {
     var gpa = std.heap.GeneralPurposeAllocator(.{}){};
@@ -49,17 +59,7 @@ pub fn main() !void {
         std.os.exit(1);
     }
     const dev_name = args[1];
-    var dev_fd = try std.fs.openFileAbsolute(dev_name, .{});
-
-    const dev = c.libevdev_new();
-    if (c.libevdev_set_fd(dev, dev_fd.handle) < 0) {
-        std.debug.print("evdev: failed creating device from descriptor", .{});
-        std.os.exit(1);
-    }
-    if (c.libevdev_grab(dev, c.LIBEVDEV_GRAB) < 0) {
-        std.debug.print("evdev: failed grabbing device", .{});
-        std.os.exit(1);
-    }
+    const dev = try inputDeviceOpenAndGrab(dev_name);
 
     if (c.libevdev_uinput_create_from_device(@ptrCast(dev), c.LIBEVDEV_UINPUT_OPEN_MANAGED, @ptrCast(&uidev)) < 0) {
         std.debug.print("evdev: failed creating uinput device", .{});