Bridge native logger to JVM

[magic-cucumber]

This PR serves as a follow-up to my previous logging-related PR. It introduces a channel to bridge logger content to the JVM side for centralized collection.

Details

static GLOBAL_LOGGER: OnceLock<RwLock<Option<Box<dyn NativeLogger>>>> = OnceLock::new();

fn get_logger_registry() -> &'static RwLock<Option<Box<dyn NativeLogger>>> {
GLOBAL_LOGGER.get_or_init(|| RwLock::new(None))
}

#[uniffi::export]
pub fn set_native_logger(logger: Box<dyn NativeLogger>) {
let mut lock = get_logger_registry().write().unwrap();
*lock = Some(logger);
}

#[macro_export]
macro_rules! wry_log {
($($arg:tt)*) => {
$crate::do_internal_log(format_args!($($arg)*));
};
}

#[doc(hidden)]
pub fn do_internal_log(args: std::fmt::Arguments) {
if !log_enabled() {
return;
}
let log_string = args.to_string();

if let Ok(lock) = crate::get_logger_registry().read() {
if let Some(ref logger) = *lock {
logger.handle_log(log_string);
return;
}
}
eprintln!("{}", log_string);
}

private object NativeBindings {
init {
setNativeLogger(
object : NativeLogger {
override fun handleLog(data: String) {
println(data)
}
}
)
}
}

[kdroidFilter]

Oh great initiative ! Love it !