add vfs.cp function

Author: prabirshrestha

async-vfs-os/src/os.rs

@@ -132,6 +132,11 @@ impl Vfs for OsFs {
         Ok((list, None))
     }
 
+    async fn cp(&self, from: &str, to: &str) -> VfsResult<()> {
+        fs::copy(self.get_real_path(from)?, self.get_real_path(to)?).await?;
+        Ok(())
+    }
+
     async fn metadata(&self, path: &str) -> VfsResult<Box<dyn VMetadata>> {
         let path = self.get_real_path(path)?;
 

async-vfs/src/vfs.rs

@@ -32,8 +32,8 @@ pub trait Vfs: Sync + Send {
         skip_token: Option<String>,
     ) -> VfsResult<(Vec<Box<dyn VMetadata>>, Option<String>)>;
 
+    async fn cp(&self, from: &str, to: &str) -> VfsResult<()>;
     async fn metadata(&self, path: &str) -> VfsResult<Box<dyn VMetadata>>;
-
     async fn mkdir(&self, path: &str) -> VfsResult<()>;
     async fn mv(&self, from: &str, to: &str) -> VfsResult<()>;
     async fn open(&self, path: &str, options: OpenOptions) -> VfsResult<Pin<Box<dyn VFile>>>;