tokenize string

this should let us have arguments with spaces like quoted strings

main.rs

@@ -27,11 +27,50 @@ fn exfil_saprus(data: &str) {
     }
 }
 
+fn tokenize_command(command: &str) -> Vec<String> {
+    let mut tokens = Vec::new();
+    let mut current_token = String::new();
+    let mut in_single_quotes = false;
+    let mut in_double_quotes = false;
+    let mut escape_next = false;
+
+    for c in command.chars() {
+        if escape_next {
+            current_token.push(c);
+            escape_next = false;
+            continue;
+        }
+
+        match c {
+            '\\' => escape_next = true,
+            '\'' if !in_double_quotes => in_single_quotes = !in_single_quotes,
+            '"' if !in_single_quotes => in_double_quotes = !in_double_quotes,
+            ' ' if !in_single_quotes && !in_double_quotes => {
+                if !current_token.is_empty() {
+                    tokens.push(current_token);
+                    current_token = String::new();
+                }
+            },
+            _ => current_token.push(c),
+        }
+    }
+
+    if !current_token.is_empty() {
+        tokens.push(current_token);
+    }
+
+    tokens
+}
+
 fn execute_command(command: &str) -> IoResult<String> {
     // Checking to see if the command is a builtin
-    match command.split_whitespace().next() {
+    match tokenize_command(&command).first() {
         Some(first_word) if first_word == "cd" => {
-            let path: String = command.split_whitespace().skip(1).collect::<Vec<&str>>().join(" ");
+            let path = tokenize_command(&command)
+                .into_iter()
+                .skip(1)
+                .collect::<Vec<String>>()
+                .join(" ");
             match cd(&path) {
                 Ok(_) => return Ok("".to_string()),
                 Err(e) => return Err(e),