feat: add the yes command

coreutils/src/commands/mod.rs

@@ -14,3 +14,4 @@ command!(nproc::Nproc);
 command!(r#true::True);
 command!(r#false::False);
 command!(test::Test);
+command!(yes::Yes);

coreutils/src/commands/yes.rs

@@ -0,0 +1,25 @@
+use boxutils::args::ArgParser;
+use boxutils::commands::Command;
+
+pub struct Yes;
+
+impl Command for Yes {
+    fn execute(&self) {
+        let args = ArgParser::builder().add_flag("--help").parse_args("yes");
+
+        if args.get_flag("--help") {
+            println!("Usage: yes [STRING]");
+            return;
+        }
+
+        let string = if args.get_normal_args().is_empty() {
+            String::from("y")
+        } else {
+            args.get_normal_args().join(" ")
+        };
+
+        loop {
+            println!("{}", string);
+        }
+    }
+}

src/registry.rs

@@ -18,6 +18,7 @@ pub fn get_registry() -> CommandRegistry {
         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("box", Box::new(Boxcmd));
 
     registry