added help/versions args

worterbuch/Cargo.toml

@@ -38,6 +38,7 @@ anyhow = "1.0.57"
 serde = { version = "1.0.137", features = ["derive"] }
 serde_json = "1.0.81"
 uuid = { version = "1.1.1", features = ["v4"] }
+clap = "3.2.6"
 
 juniper = { version = "0.15.9", optional = true }
 juniper_graphql_ws = { version = "0.3.0", optional = true }

worterbuch/src/main.rs

@@ -9,6 +9,7 @@ mod worterbuch;
 use crate::repl::repl;
 use crate::worterbuch::Worterbuch;
 use anyhow::Result;
+use clap::App;
 use libworterbuch::config::Config;
 use std::sync::Arc;
 #[cfg(feature = "docker")]
@@ -20,22 +21,27 @@ use tokio::{spawn, sync::RwLock};
 async fn main() -> Result<()> {
     dotenv::dotenv().ok();
     env_logger::init();
-    log::info!("Starting single-threaded instance of Wörterbuch …");
-    run().await
+    run("Starting Wörterbuch in single-threaded mode …").await
 }
 
 #[cfg(feature = "multithreaded")]
 #[tokio::main]
 async fn main() -> Result<()> {
     dotenv::dotenv().ok();
     env_logger::init();
-    log::info!("Starting multi-threaded instance of Wörterbuch …");
-    run().await
+    run("Starting Wörterbuch in multi-threaded mode …").await
 }
 
-async fn run() -> Result<()> {
+async fn run(msg: &str) -> Result<()> {
     let config = Config::new()?;
 
+    App::new("worterbuch")
+        .version(env!("CARGO_PKG_VERSION"))
+        .author(env!("CARGO_PKG_AUTHORS"))
+        .about("An in-memory data base / message broker hybrid")
+        .get_matches();
+
+    log::info!("{msg}");
     log::debug!("Separator: {}", config.separator);
     log::debug!("Wildcard: {}", config.wildcard);
     log::debug!("Multi-Wildcard: {}", config.multi_wildcard);

worterbuch/src/repl.rs

@@ -29,7 +29,7 @@ pub async fn repl(worterbuch: Arc<RwLock<Worterbuch>>) {
     let (tx, mut rx) = unbounded_channel();
     thread::spawn(|| read(tx));
 
-    log::info!("Starting REPL:");
+    log::info!("Starting REPL …");
 
     while let Some(line) = rx.recv().await {
         if let Err(e) = interpret(line, &worterbuch).await {