move listdir to separate file

src/fs.cpp

@@ -0,0 +1,29 @@
+#include <iostream>
+#include <string>
+#include <vector>
+
+#include <boost/filesystem/operations.hpp>
+#include <boost/filesystem/path.hpp>
+
+#include "fs.hpp"
+
+using namespace std;
+
+vector<string> cellar::fs::listdir(string path) {
+	vector<string> result;
+    boost::filesystem::path cwd(path);
+    boost::filesystem::directory_iterator iter_end;
+
+    for (boost::filesystem::directory_iterator iter_cwd(cwd); iter_cwd != iter_end; ++iter_cwd) {
+        try {
+            string item = iter_cwd->path().filename().native();
+			
+			result.push_back(item);
+        }
+        catch (const exception& exc) {
+            cout << "fuck" << endl;
+        }
+    }
+	return result;
+}
+

src/fs.hpp

@@ -0,0 +1,16 @@
+#ifndef __FS_HPP
+#define __FS_HPP
+#pragma once
+
+#include <string>
+#include <vector>
+
+using namespace std;
+
+namespace cellar {
+	namespace fs {
+		extern vector<string> listdir(string path);
+	}
+}
+
+#endif // __FS_HPP