Move custom libs to the source tree

libs/SimpleValidator/Validator.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace SimpleValidator;
+
+class Validator
+{
+    private $data = array();
+    private $errors = array();
+    private $validators = array();
+
+    public function __construct(array $data, array $validators)
+    {
+        $this->data = $data;
+        $this->validators = $validators;
+    }
+
+    public function execute()
+    {
+        $result = true;
+
+        foreach ($this->validators as $validator) {
+            if (! $validator->execute($this->data)) {
+                $this->addError($validator->getField(), $validator->getErrorMessage());
+                $result = false;
+            }
+        }
+
+        return $result;
+    }
+
+    public function addError($field, $message)
+    {
+        if (! isset($this->errors[$field])) {
+            $this->errors[$field] = array();
+        }
+
+        $this->errors[$field][] = $message;
+    }
+
+    public function getErrors()
+    {
+        return $this->errors;
+    }
+}