Merge pull request #81 from bertjwregeer/feature/exit-without-exec

Add support for exiting with an exit code

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "barnacle"
-version = "0.2.0"
+version = "0.3.0"
 edition = "2021"
 authors = ["Bert JW Regeer <[email protected]>"]
 license = "ISC"

src/cli.rs

@@ -13,9 +13,13 @@ pub struct Cli {
     pub output: PathBuf,
 
     /// The command + arguments to execute once template is rendered
-    #[arg(required(true))]
+    #[arg(group = "command_or_exit", required(true))]
     pub command: Vec<String>,
 
+    /// Exit with error code, exclusive with a command to exeute
+    #[arg(short, long, group = "command_or_exit", required(true))]
+    pub exit: Option<u8>,
+
     /// Turn debugging information on
     #[arg(short, long, action = clap::ArgAction::Count)]
     pub verbose: u8,

src/main.rs

@@ -40,5 +40,11 @@ fn main() {
 
     fs::write(&matches.output, output).expect("Failed to write output file");
 
+    // If we have an exit code, use it
+    if let Some(exit) = matches.exit {
+        std::process::exit(exit.into());
+    }
+
+    // Otherwise we execute the command provided on the CLI
     exec(&matches.command);
 }