VFS crate

vfs/src/std_backend.rs

@@ -0,0 +1,37 @@
+use std::fs;
+use std::io;
+use std::path::Path;
+
+use crate::{DirEntry, Metadata, ReadDir, VfsBackend};
+
+pub struct StdBackend;
+
+impl VfsBackend for StdBackend {
+    fn read(&self, path: &Path) -> io::Result<Vec<u8>> {
+        fs::read(path)
+    }
+
+    fn write(&self, path: &Path, data: &[u8]) -> io::Result<()> {
+        fs::write(path, data)
+    }
+
+    fn read_dir(&self, path: &Path) -> io::Result<ReadDir> {
+        let inner = fs::read_dir(path)?.map(|entry| {
+            Ok(DirEntry {
+                path: entry?.path(),
+            })
+        });
+
+        Ok(ReadDir {
+            inner: Box::new(inner),
+        })
+    }
+
+    fn metadata(&self, path: &Path) -> io::Result<Metadata> {
+        let inner = fs::metadata(path)?;
+
+        Ok(Metadata {
+            is_file: inner.is_file(),
+        })
+    }
+}