feat: dabble with macros a bit more

src/registry.rs

@@ -1,26 +1,33 @@
-use super::boxcmd::Boxcmd;
+use crate::boxcmd::Boxcmd;
 use boxutils::registry::CommandRegistry;
 
+macro_rules! register {
+    ($registry:expr, { $($cmd_name:expr => $cmd:expr),* }) => {
+        $(
+            $registry.register($cmd_name, Box::new($cmd));
+        )*
+    };
+}
+
 pub fn get_registry() -> CommandRegistry {
     let mut registry = CommandRegistry::new();
 
-    registry.register("hello", Box::new(coreutils::commands::Hello));
-    registry.register("cat", Box::new(coreutils::commands::Cat));
-    registry.register("echo", Box::new(coreutils::commands::Echo));
-    registry.register("mkdir", Box::new(coreutils::commands::Mkdir));
-    registry.register("ash", Box::new(shell::ash::Ash));
-    registry.register("dd", Box::new(coreutils::commands::Dd));
-    registry.register("nproc", Box::new(coreutils::commands::Nproc));
-    registry.register("true", Box::new(coreutils::commands::True));
-    registry.register("false", Box::new(coreutils::commands::False));
-    registry.register(
-        "test",
-        Box::new(coreutils::commands::Test::without_bracket()),
-    );
-    registry.register("[", Box::new(coreutils::commands::Test::with_bracket()));
-    registry.register("yes", Box::new(coreutils::commands::Yes));
-    registry.register("pwd", Box::new(coreutils::commands::Pwd));
-    registry.register("box", Box::new(Boxcmd));
+    register!(registry, {
+        "hello" => coreutils::commands::Hello,
+        "cat" => coreutils::commands::Cat,
+        "echo" => coreutils::commands::Echo,
+        "mkdir" => coreutils::commands::Mkdir,
+        "ash" => shell::ash::Ash,
+        "dd" => coreutils::commands::Dd,
+        "nproc" => coreutils::commands::Nproc,
+        "true" => coreutils::commands::True,
+        "false" => coreutils::commands::False,
+        "test" => coreutils::commands::Test::without_bracket(),
+        "[" => coreutils::commands::Test::with_bracket(),
+        "yes" => coreutils::commands::Yes,
+        "pwd" => coreutils::commands::Pwd,
+        "box" => Boxcmd
+    });
 
     registry
 }