discord-rpc-client/examples/java.rs

#[macro_use]
extern crate tracing;

use discord_rpc_client::java::*;

use jni::objects::{JClass, JObject, JString};
use jni::JNIEnv;

// can't just put these in src/java.rs and re-export because of some tree-shaking that the compiler does.

#[no_mangle]
pub extern "system" fn Java_com_discord_rpc_DiscordRPC_create<'a>(
    env: JNIEnv<'a>,
    class: JClass,
) -> JObject<'a> {
    let _ = tracing_subscriber::fmt::try_init();

    match jni_create(env, class) {
        Ok(obj) => obj,
        Err(e) => {
            error!(
                concat!("at ", file!(), ":", line!(), ":", column!(), ": {}"),
                e
            );
            JObject::null()
        }
    }
}

#[no_mangle]
pub extern "system" fn Java_com_discord_rpc_DiscordRPC_connect(
    env: JNIEnv,
    obj: JObject,
    client_id: JString,
) -> bool {
    match jni_connect(env, obj, client_id) {
        Ok(_) => true,
        Err(e) => {
            match e.downcast::<std::io::Error>() {
                Ok(e) => {
                    if e.kind() == std::io::ErrorKind::NotFound {
                        debug!(
                            concat!("at ", file!(), ":", line!(), ":", column!(), ": {}"),
                            e
                        );
                        return false;
                    } else {
                        error!(
                            concat!("at ", file!(), ":", line!(), ":", column!(), ": {}"),
                            e
                        );
                    }
                }
                Err(e) => {
                    error!(
                        concat!("at ", file!(), ":", line!(), ":", column!(), ": {}"),
                        e
                    );
                }
            }
            false
        }
    }
}

#[no_mangle]
pub extern "system" fn Java_com_discord_rpc_DiscordRPC_disconnect(
    env: JNIEnv,
    obj: JObject,
) -> bool {
    match jni_disconnect(env, obj) {
        Ok(_) => true,
        Err(e) => {
            error!(
                concat!("at ", file!(), ":", line!(), ":", column!(), ": {}"),
                e
            );
            false
        }
    }
}

#[no_mangle]
pub extern "system" fn Java_com_discord_rpc_DiscordRPC_setActivity(
    env: JNIEnv,
    obj: JObject,
    j_activity: JObject,
) -> bool {
    match jni_set_activity(env, obj, j_activity) {
        Ok(_) => true,
        Err(e) => {
            error!(
                concat!("at ", file!(), ":", line!(), ":", column!(), ": {}"),
                e
            );
            false
        }
    }
}

#[no_mangle]
pub extern "system" fn Java_com_discord_rpc_DiscordRPC_clearActivity(
    env: JNIEnv,
    obj: JObject,
) -> bool {
    match jni_clear_activity(env, obj) {
        Ok(_) => true,
        Err(e) => {
            error!(
                concat!("at ", file!(), ":", line!(), ":", column!(), ": {}"),
                e
            );
            false
        }
    }
}