Generate shell auto-completion files at build time

Cargo.lock

@@ -88,6 +88,7 @@ dependencies = [
  "avt",
  "axum",
  "clap",
+ "clap_complete",
  "clap_mangen",
  "config",
  "futures-util",
@@ -318,6 +319,15 @@ dependencies = [
  "strsim",
 ]
 
+[[package]]
+name = "clap_complete"
+version = "4.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dd79504325bf38b10165b02e89b4347300f855f273c4cb30c4a3209e6583275e"
+dependencies = [
+ "clap",
+]
+
 [[package]]
 name = "clap_derive"
 version = "4.4.7"

Cargo.toml

@@ -46,6 +46,7 @@ tokio-util = "0.7.10"
 
 [build-dependencies]
 clap = { version = "4.4.7", features = ["derive"] }
+clap_complete = "4.5.2"
 clap_mangen = "0.2.20"
 url = "2.5.0"
 

build.rs

@@ -1,4 +1,6 @@
 use clap::CommandFactory;
+use clap::ValueEnum;
+use clap_complete::{generate_to, Shell};
 use clap_mangen::Man;
 use std::env;
 use std::fs::File;
@@ -11,9 +13,14 @@ mod cli {
 
 fn main() -> std::io::Result<()> {
     let out_dir = PathBuf::from(env::var_os("OUT_DIR").ok_or(io::ErrorKind::NotFound)?);
-    let cmd = cli::Cli::command();
-    let man = Man::new(cmd);
+    let mut cmd = cli::Cli::command();
+
+    let man = Man::new(cmd.clone());
     man.render(&mut File::create(out_dir.join("asciinema.1"))?)?;
 
+    for shell in Shell::value_variants() {
+        generate_to(*shell, &mut cmd, "asciinema", &out_dir).unwrap();
+    }
+
     Ok(())
 }