.some

Sources/Path+Attributes.swift

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+import Foundation
+
+public extension Path {
+    /// - Note: If file is already locked, does nothing
+    /// - Note: If file doesn’t exist, throws
+    @discardableResult
+    public func lock() throws -> Path {
+        var attrs = try FileManager.default.attributesOfItem(atPath: string)
+        let b = attrs[.immutable] as? Bool ?? false
+        if !b {
+            attrs[.immutable] = true
+            try FileManager.default.setAttributes(attrs, ofItemAtPath: string)
+        }
+        return self
+    }
+
+    /// - Note: If file isn‘t locked, does nothing
+    /// - Note: If file doesn’t exist, does nothing
+    @discardableResult
+    public func unlock() throws -> Path {
+        var attrs: [FileAttributeKey: Any]
+        do {
+            attrs = try FileManager.default.attributesOfItem(atPath: string)
+        } catch CocoaError.fileReadNoSuchFile {
+            return self
+        }
+        let b = attrs[.immutable] as? Bool ?? false
+        if b {
+            attrs[.immutable] = false
+            try FileManager.default.setAttributes(attrs, ofItemAtPath: string)
+        }
+        return self
+    }
+
+    /**
+     Sets the file’s attributes using UNIX octal notation.
+
+         Path.home.join("foo").chmod(0o555)
+     */
+    @discardableResult
+    public func chmod(_ octal: Int) throws -> Path {
+        try FileManager.default.setAttributes([.posixPermissions: octal], ofItemAtPath: string)
+        return self
+    }
+
+    /// - Returns: modification-time or creation-time if none
+    public var mtime: Date {
+        do {
+            let attrs = try FileManager.default.attributesOfItem(atPath: string)
+            return attrs[.modificationDate] as? Date ?? attrs[.creationDate] as? Date ?? Date()
+        } catch {
+            //TODO print(error)
+            return Date()
+        }
+    }
+}