implement list dir

Sources/Fileable/Info+Fileable.swift

@@ -26,6 +26,22 @@ extension Fileable {
         let path = NSHomeDirectory()
         return path
     }
+    
+    /// List contents of specific directory
+    /// - returns: path array
+    public var ls: [String]? {
+
+        var path: [String]? = []
+        
+        do {
+            try path = Fileable.fm.contentsOfDirectory(atPath: self.path)
+            
+        } catch {
+            path = nil
+        }
+        
+        return path
+    }
 }
 
 

Sources/Fileable/Operation+Fileable.swift

@@ -36,10 +36,10 @@ extension Fileable {
         print("This function is not implemented now.")
     }
 
-    public static func touch(_ path: String) throws {
+    public static func touch(at: String) throws {
         let empty = ""
         do {
-            try empty.write(toFile: path, atomically: true, encoding: String.Encoding.utf8)
+            try empty.write(to: URL(string: at)!, atomically: true, encoding: String.Encoding.utf8)
         } catch let error as NSError {
             print("failed to write: \(error)")
         }

Tests/Info.swift

@@ -36,6 +36,16 @@ class Info: XCTestCase {
         XCTAssertFalse(Fileable(file).isFile)
     }
 
+    func testCaseLS() {
+        // This is an example of a functional test case.
+        // Use XCTAssert and related functions to verify your tests produce the correct results.
+        let file: String = Fileable.home
+        
+        let fileList = Fileable(file).ls!
+        
+        NSLog(String(describing: fileList))
+    }
+
     func testPerformanceExample() {
         // This is an example of a performance test case.