get nextsync_root

src/utils.rs

@@ -0,0 +1 @@
+pub mod path;

src/utils/path.rs

@@ -0,0 +1,19 @@
+use std::env;
+use std::path::{PathBuf, Path};
+
+pub fn nextsync_root() -> Option<PathBuf> {
+    let mut path = env::current_dir().unwrap();
+    let root = loop {
+        path.push(".nextsync");
+        if path.exists() {
+            path.pop();
+            break Some(path);
+        }
+        path.pop();
+        path.pop();
+        if path == Path::new("/") {
+            break None;
+        }
+    };
+    root
+}