feat: support hiding folders with --hidden (#73)

src/utils.rs

@@ -1,4 +1,5 @@
-use std::borrow::Cow;
+use crate::BoxResult;
+use std::{borrow::Cow, path::Path};
 
 pub fn encode_uri(v: &str) -> String {
     let parts: Vec<_> = v.split('/').map(urlencoding::encode).collect();
@@ -10,3 +11,15 @@ pub fn decode_uri(v: &str) -> Option<Cow<str>> {
         .decode_utf8()
         .ok()
 }
+
+pub fn get_file_name(path: &Path) -> &str {
+    path.file_name()
+        .and_then(|v| v.to_str())
+        .unwrap_or_default()
+}
+
+pub fn try_get_file_name(path: &Path) -> BoxResult<&str> {
+    path.file_name()
+        .and_then(|v| v.to_str())
+        .ok_or_else(|| format!("Failed to get file name of `{}`", path.display()).into())
+}