feat: add build script for version info and shell completions

Introduce a build.rs that generates a version.txt file with the
package version, git commit hash, and date. Also generate shell
completion scripts using mingling's build utilities.

Migrate the `-v/--version` flag to read from the generated
version.txt and replace BasicProgramSetup with HelpFlagSetup.

1 files changed, 12 insertions, 1 deletions

diff --git a/rola-cli/src/lib.rs b/rola-cli/src/lib.rs
index f81c34e..54ff09a 100644
--- a/rola-cli/src/lib.rs
+++ b/rola-cli/src/lib.rs
@@ -1,4 +1,6 @@
-use mingling::macros::gen_program;
+use std::process::exit;
+
+use mingling::macros::{gen_program, help};
 
 pub mod res;
 pub mod tokio_wrapper;
@@ -9,6 +11,15 @@ use bucket_mgr::*;
 mod error;
 use error::*;
 
+#[help]
+fn handle_error_dispatch_not_found(_err: ErrorDispatcherNotFound) {
+    let help = locale::helps::Basic::help().trim();
+
+    // Print directly to stderr and exit with code 0
+    eprintln!("{}", help);
+    exit(0)
+}
+
 gen_program!();
 
 pub mod locale {