better command parsing with file name argument for :w

src/main.rs

@@ -433,20 +433,40 @@ impl State {
     }
 
     fn execute_command(&mut self, command: &str) -> std::result::Result<(), String> {
-        match command {
-            "q" => self.quit = true,
-            "w" => {
-                let handle = self.file.clone().unwrap_or_else(|| {
-                    OsString::from("file")
-                });
+        let command_parts = command.split(' ').collect::<Vec<&str>>();
 
-                self.write_buffer(handle)?;
-            },
-            command => {
-                return Err(
-                    format!("{:?}: Unrecognized command.", command)
-                );
-            },
+        let commands = match command_parts.get(0) {
+            Some(parts) => parts.chars().collect::<Vec<char>>(),
+            None => return Ok(()),
+        };
+
+        for command in commands.clone().iter() {
+            match command {
+                'q' => self.quit = true,
+                'w' => {
+                    let handle: OsString;
+
+                    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)?;
+                },
+                command => {
+                    return Err(
+                        format!("{}: Unrecognized command.", command)
+                    );
+                },
+            }
         }
         Ok(())
     }