feat: add echo, fix annoying windows bug

coreutils/src/commands/echo.rs

@@ -0,0 +1,12 @@
+use boxutils::commands::Command;
+
+pub struct Echo;
+
+impl Command for Echo {
+    fn execute(&self) {
+        let args: Vec<String> = std::env::args().collect::<Vec<_>>();
+        let arguments: Vec<String> = boxutils::commands::get_args(String::from("echo"), args);
+        let message = &arguments.join(" ");
+        println!("{}", message);
+    }
+}

coreutils/src/commands/mod.rs

@@ -3,3 +3,6 @@ pub use hello::Hello;
 
 mod cat;
 pub use cat::Cat;
+
+mod echo;
+pub use echo::Echo;

src/main.rs

@@ -1,17 +1,7 @@
 mod boxcmd;
 mod registry;
 
-use std::env;
-use std::path::Path;
-
-fn being_called_as() -> String {
-    let args = env::args().collect::<Vec<String>>();
-    let exe_path = args[0].clone();
-    let path = Path::new(&exe_path);
-    let being_called = path.file_name().unwrap().to_str().unwrap().to_string();
-    let formatted = being_called.replace(".exe", "");
-    formatted
-}
+use boxutils::commands::being_called_as;
 
 fn main() {
     let utility_name = being_called_as();

src/registry.rs

@@ -1,11 +1,12 @@
-use boxutils::registry::CommandRegistry;
 use super::boxcmd::Boxcmd;
+use boxutils::registry::CommandRegistry;
 
 pub fn get_registry() -> CommandRegistry {
-let mut registry = CommandRegistry::new();
+    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("box", Box::new(Boxcmd));
 
     registry

utils/src/commands.rs

@@ -1,15 +1,21 @@
+use std::env;
 use std::mem;
+use std::path::Path;
+
+pub fn being_called_as() -> String {
+    let args = env::args().collect::<Vec<String>>();
+    let exe_path = args[0].clone();
+    let path = Path::new(&exe_path);
+    let being_called = path.file_name().unwrap().to_str().unwrap().to_string();
+    let formatted = being_called.replace(".exe", "");
+    formatted
+}
 
 pub fn get_args(commandname: String, args: Vec<String>) -> Vec<String> {
     let mut arguments: Vec<String> = args.clone();
-    let cmd = arguments[0].clone();
+    let exe_name = being_called_as();
 
-    let _ = mem::replace(
-        &mut arguments[0],
-        cmd
-        .replace(".exe", "")
-        .replace("./", "")
-    );
+    let _ = mem::replace(&mut arguments[0], exe_name);
 
     if let Some(num) = arguments.iter().position(|x| *x == commandname) {
         arguments.drain(..=num);