Added history callback

src/main.rs

@@ -149,18 +149,38 @@ fn get_hist_from_number(number: &i32) -> Option<String> {
     }
 }
 
+fn treat_history_callback(line: &str) -> Option<String> {
+    let mut mystring = String::from(line);
+    mystring = mystring.trim().to_string();
+    let mut chars = mystring.chars();
+    //Skip the !
+    chars.next();
+    let mynbr: i32 = chars.as_str().parse().unwrap();
+    get_hist_from_number(&mynbr)
+}
 
 
 fn main(){
     loop {
         print!("> ");
-        stdout().flush();
+        //stdout().flush();
 
         let mut input = String::new();
         stdin().read_line(&mut input).unwrap();
-        write_to_history(&input);
-        if process_line(input) {
-            return
+        if input.starts_with("!") {
+            let command_found = treat_history_callback(&input);
+            match command_found {
+                Some(c) => {
+                    write_to_history(&c);
+                    process_line(c);
+                },
+                None => ()
+            };
+        } else {
+            write_to_history(&input);
+            if process_line(input) {
+                return
+            }
         }
     }
 }