Add --no-input flag to make background process work

src/app.rs

@@ -6,7 +6,14 @@ use objc::rc::autoreleasepool;
 use objc::rc::{StrongPtr, WeakPtr};
 use objc::runtime::{Class, Object, Sel};
 
-use std::{mem, ops::Deref, raw};
+use std::{mem, ops::Deref};
+
+/// Meta data for a trait object
+#[derive(Copy, Clone, PartialEq, Eq, Debug)]
+pub struct TraitObject {
+	pub data: *mut (),
+	pub vtable: *mut (),
+}
 
 bitflags::bitflags! {
     struct NSKeyValueObservingOptions: NSUInteger {
@@ -23,7 +30,7 @@ fn get_callback(self_obj: &Object) -> *mut dyn Fn(id) {
     unsafe {
         let data: *mut libc::c_void = *self_obj.get_ivar("_data");
         let vtable: *mut libc::c_void = *self_obj.get_ivar("_vtable");
-        let trait_obj = raw::TraitObject {
+        let trait_obj = TraitObject {
             data: data.cast::<()>(),
             vtable: vtable.cast::<()>(),
         };
@@ -99,7 +106,7 @@ impl KeyValueObserver {
         unsafe {
             let boxed = Box::new(closure);
             let callback: *const dyn Fn(*mut Object) = Box::into_raw(boxed);
-            let trait_obj: raw::TraitObject = mem::transmute(callback);
+            let trait_obj: TraitObject = mem::transmute(callback);
             let observer: id = msg_send![*RUST_KVO_HELPER, new];
             (*observer).set_ivar("_data", trait_obj.data.cast::<libc::c_void>());
             (*observer).set_ivar("_vtable", trait_obj.vtable.cast::<libc::c_void>());

src/main.rs

@@ -1,4 +1,3 @@
-#![feature(raw)]
 #![allow(non_snake_case)]
 
 mod app;
@@ -27,6 +26,10 @@ struct Options {
     /// Does not print the initial value, only prints actual changes.
     #[structopt(short = "o", long = "only-changes")]
     only_changes: bool,
+
+    /// Disable listening to the `quit` command.
+    #[structopt(short = "n", long = "no-input")]
+    no_input: bool,
 }
 
 fn handle_quit() -> Result<(), Error> {
@@ -44,7 +47,9 @@ fn handle_quit() -> Result<(), Error> {
 
 fn main() -> Result<(), Error> {
     let options = Options::from_args();
-    handle_quit()?;
+    if !options.no_input {
+        handle_quit()?;
+    }
     app::run(!options.only_changes || options.exit, move |appearance| {
         if let Some(command) = options.command.as_ref() {
             let cmd = format!("{} {}", command, appearance);