Create MaxLengthRule.swift

Validator/MaxLengthRule.swift

@@ -0,0 +1,27 @@
+//
+//  MaxLengthRule.swift
+//  Validator
+//
+//  Created by Guilherme Berger on 4/6/15.
+//
+
+import Foundation
+
+class MaxLengthRule: Rule {
+    
+    private var DEFAULT_MAX_LENGTH: Int = 16
+    
+    init(){}
+    
+    init(length: Int){
+        self.DEFAULT_MAX_LENGTH = length
+    }
+    
+    func validate(value: String) -> Bool {
+        return countElements(value) <= DEFAULT_MAX_LENGTH
+    }
+    
+    func errorMessage() -> String {
+        return "Must be at most \(DEFAULT_MAX_LENGTH) characters long"
+    }
+}