Parse commands as strings + wq

src/main.rs

@@ -333,39 +333,42 @@ impl State {
         Ok(())
     }
 
+    fn write_command(&mut self, command: &str, args: &[&str]) -> std::result::Result<(), String> {
+        let handle = match self.file.clone() {
+            Some(handle) => handle,
+            None => match args.get(0) {
+                Some(part) => OsString::from(part),
+                None => {
+                    return Err(format!("{}: No file name.", command));
+                }
+            },
+        };
+
+        self.write_buffer(handle).map_err(|err| format!("{}", err))
+    }
+
     fn execute_command(&mut self, command: &str) -> std::result::Result<(), String> {
         let command_parts = command.split(' ').collect::<Vec<&str>>();
 
-        let commands = match command_parts.get(0) {
-            Some(parts) => parts.chars().collect::<Vec<char>>(),
+        let command = match command_parts.get(0) {
+            Some(command) => command,
             None => return Ok(()),
         };
 
-        for command in commands.clone().iter() {
-            match command {
-                'q' => self.quit = true,
-                'w' => {
-                    let handle: OsString;
+        let args = &command_parts[1..];
 
-                    if let Some(part) = self.file.clone() {
-                        handle = part;
-                    } else {
-                        handle = match command_parts.get(1) {
-                            Some(part) => OsString::from(part),
-                            None => {
-                                return Err(format!("{}: No file name.", command));
-                            }
-                        };
-                    }
-
-                    self.write_buffer(handle)
-                        .map_err(|err| format!("{}", err))?;
-                }
-                command => {
-                    return Err(format!("{}: Unrecognized command.", command));
-                }
+        match *command {
+            "q" => self.quit = true,
+            "w" => return self.write_command(command, args),
+            "wq" => {
+                self.write_command(command, args)?;
+                self.quit = true;
+            }
+            command => {
+                return Err(format!("{}: Unrecognized command.", command));
             }
         }
+
         Ok(())
     }