feat: Adds file attributes supports on mac os platform.

Author: aixing

Files.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

Sources/Files.swift

@@ -45,6 +45,10 @@ public class FileSystem {
      *  to perform operations that are supported by both files & folders.
      */
     public class Item: Equatable, CustomStringConvertible {
+        #if os(macOS)
+        /// The attributes of the `FileSystem.Item` on mac os platform.
+        public typealias Attributes = [FileAttributeKey: Any]
+        #endif
         /// Errror type used for invalid paths for files or folders
         public enum PathError: Error, Equatable, CustomStringConvertible {
             /// Thrown when an empty path was given when initializing a file
@@ -213,6 +217,20 @@ public class FileSystem {
         fileprivate let kind: Kind
         fileprivate let fileManager: FileManager
 
+        #if os(macOS)
+        /// The file attributes of the item on file system.
+        @available(macOS 10.5, *)
+        public var attributes: Attributes? {
+            get {
+                return try? fileManager.attributesOfItem(atPath: path)
+            }
+            
+            set {
+                try? fileManager.setAttributes(newValue ?? [:], ofItemAtPath: path)
+            }
+        }
+        #endif
+        
         fileprivate init(path: String, kind: Kind, using fileManager: FileManager) throws {
             guard !path.isEmpty else {
                 throw PathError.empty