beer: initial project scaffolding

Signed-off-by: NotAShelf <raf@notashelf.dev>
Change-Id: I07c4ee715f51332893e2466b8c52f8eb6a6a6964

src/main.rs

@@ -0,0 +1,49 @@
+//! beer, a fast, software-rendered, Wayland-native terminal emulator.
+
+use std::process::ExitCode;
+
+use pound::Parse;
+
+/// A fast, software-rendered, Wayland-native terminal emulator.
+#[derive(Parse)]
+#[pound(name = "beer", version = "0.0.0")]
+struct Cli {
+    /// Run as a daemon hosting multiple windows.
+    #[pound(long)]
+    server: bool,
+}
+
+fn main() -> ExitCode {
+    init_logging();
+    match run(Cli::parse()) {
+        Ok(()) => ExitCode::SUCCESS,
+        Err(err) => {
+            tracing::error!("{err:#}");
+            eprintln!("beer: {err:#}");
+            ExitCode::FAILURE
+        }
+    }
+}
+
+fn init_logging() {
+    use tracing_subscriber::{EnvFilter, fmt};
+
+    let filter = EnvFilter::try_from_env("BEER_LOG")
+        .or_else(|_| EnvFilter::try_from_default_env())
+        .unwrap_or_else(|_| EnvFilter::new("warn"));
+
+    fmt()
+        .with_env_filter(filter)
+        .with_writer(std::io::stderr)
+        .init();
+}
+
+fn run(cli: Cli) -> anyhow::Result<()> {
+    if cli.server {
+        tracing::info!("starting beer server");
+        todo!("server mode")
+    }
+
+    tracing::info!("starting beer");
+    todo!("window mode")
+}