Add RomFS support to the file-explorer example (by jumping to romfs:/)

ctru-rs/examples/file-explorer.rs

@@ -3,17 +3,19 @@
 
 use ctru::applets::swkbd::{Button, Swkbd};
 use ctru::console::Console;
+use ctru::romfs::RomFS;
 use ctru::services::hid::KeyPad;
 use ctru::services::{Apt, Hid};
 use ctru::Gfx;
 use std::fs::DirEntry;
-use std::path::PathBuf;
+use std::path::{Path, PathBuf};
 
 fn main() {
     ctru::init();
     let apt = Apt::init().unwrap();
     let hid = Hid::init().unwrap();
     let gfx = Gfx::default();
+    let _romfs = RomFS::new().unwrap();
 
     FileExplorer::init(&apt, &hid, &gfx).run();
 }
@@ -59,7 +61,9 @@ impl<'a> FileExplorer<'a> {
                 self.console.clear();
                 self.print_menu();
             } else if input.contains(KeyPad::KEY_A) {
-                self.get_next_path();
+                self.get_input_and_run(Self::set_next_path);
+            } else if input.contains(KeyPad::KEY_X) {
+                self.get_input_and_run(Self::set_exact_path);
             }
 
             self.gfx.flush_buffers();
@@ -107,16 +111,32 @@ impl<'a> FileExplorer<'a> {
             }
         }
 
-        println!("Start to exit, A to select an entry by number, B to go up a directory");
+        println!("Start to exit, A to select an entry by number, B to go up a directory, X to set the path.");
     }
 
-    fn get_next_path(&mut self) {
+    fn get_input_and_run(&mut self, action: impl FnOnce(&mut Self, String)) {
         let mut keyboard = Swkbd::default();
-        let mut next_path_index = String::new();
+        let mut new_path_str = String::new();
 
-        match keyboard.get_utf8(&mut next_path_index) {
+        match keyboard.get_utf8(&mut new_path_str) {
             Ok(Button::Right) => {
                 // Clicked "OK"
+                action(self, new_path_str);
+            }
+            Ok(Button::Left) => {
+                // Clicked "Cancel"
+            }
+            Ok(Button::Middle) => {
+                // This button wasn't shown
+                unreachable!()
+            }
+            Err(e) => {
+                panic!("Error: {:?}", e)
+            }
+        }
+    }
+
+    fn set_next_path(&mut self, next_path_index: String) {
         let next_path_index: usize = match next_path_index.parse() {
             Ok(index) => index,
             Err(e) => {
@@ -142,16 +162,16 @@ impl<'a> FileExplorer<'a> {
         self.path = next_entry.path();
         self.print_menu();
     }
-            Ok(Button::Left) => {
-                // Clicked "Cancel"
-            }
-            Ok(Button::Middle) => {
-                // This button wasn't shown
-                unreachable!()
-            }
-            Err(e) => {
-                panic!("Error: {:?}", e)
-            }
+
+    fn set_exact_path(&mut self, new_path_str: String) {
+        let new_path = Path::new(&new_path_str);
+        if !new_path.is_dir() {
+            println!("Not a directory: {}", new_path_str);
+            return;
         }
+
+        self.console.clear();
+        self.path = new_path.to_path_buf();
+        self.print_menu();
     }
 }

romfs/test-file.txt

@@ -0,0 +1 @@
+test