Made very-very basic shell (? is used as Enter key)

src/main.rs

@@ -7,6 +7,7 @@
 
 use core::panic::PanicInfo;
 use gros::{println, print};
+use gros::{serial_println, serial_print};
 use bootloader::{BootInfo, entry_point};
 use gros::memory::BootInfoFrameAllocator;
 use gros::task::{Task, simple_executor::SimpleExecutor};
@@ -45,7 +46,9 @@ fn kernel_main(boot_info: &'static BootInfo) -> ! {
 
     let mut executor = Executor::new();
     //executor.spawn(Task::new(example_task()));
-    executor.spawn(Task::new(keyboard::print_keypresses()));
+    //executor.spawn(Task::new(keyboard::print_keypresses()));
+    executor.spawn(Task::new(keyboard::return_keychar()));
+
     executor.run();
 
     #[cfg(test)]

src/task/keyboard.rs

@@ -1,6 +1,11 @@
 use conquer_once::spin::OnceCell;
 use crossbeam_queue::ArrayQueue;
 use crate::println;
+use crate::serial_print;
+use alloc::string::String;
+use crate::alloc::string::ToString;
+
+use pc_keyboard::KeyCode;
 
 static SCANCODE_QUEUE: OnceCell<ArrayQueue<u8>> = OnceCell::uninit();
 
@@ -78,4 +83,41 @@ pub async fn print_keypresses() {
             }
         }
     }
+}
+
+pub async fn return_keychar() {
+    let mut scancodes = ScancodeStream::new();
+    let mut keyboard = Keyboard::new(layouts::Us104Key, ScancodeSet1,
+        HandleControl::Ignore);
+    let mut command = String::new();
+    while let Some(scancode) = scancodes.next().await {
+    	  if let Ok(Some(key_event)) = keyboard.add_byte(scancode) {
+	     if let Some(key) = keyboard.process_keyevent(key_event) {
+	     match key {   
+                DecodedKey::Unicode(character) => (
+					       match character {
+						     '?' => { println!(); command_func(command); command = "".to_string(); print!("> "); }
+						     char => { print!("{}", char); command.push(char); serial_print!("{:?}", char); }
+						     }
+
+		),
+                DecodedKey::RawKey(key) => serial_print!("{:?}", key),
+	     };
+	     };
+	 }
+	}
+}
+
+fn command_func(command: String) {
+   match command.as_str() {
+   	 "hi" => {
+	 		  println!("hello command!!!");
+			  }
+	 "wow" => {
+			  println!("wow!!");
+			  }
+	command => {
+		println!("I don't know that command");
+		}
+	}
 }