Fixed manual autoloader.

Author: typerandom

README.md

@@ -24,8 +24,7 @@ UserApp relies on the autoloading features of PHP to load its files when needed.
 
 #### Not using Composer? Use the library's own autoloader
 
-    require 'lib/Autoloader.php';
-    UserApp\Widget\Autoloader::register();
+    require 'autoload.php';
 
 ## Example
 

autoload.php

@@ -0,0 +1,5 @@
+<?php
+
+require __DIR__.'/lib/UserApp/Widget/Autoloader.php';
+
+UserApp\Widget\Autoloader::register();

lib/Autoload.php

@@ -0,0 +1,47 @@
+<?php
+
+namespace UserApp\Widget;
+
+class Autoloader
+{
+    private $directory;
+    private $prefix;
+    private $prefixLength;
+
+    /**
+     * @param string $baseDirectory Base directory where the source files are located.
+     */
+    public function __construct($baseDirectory = __DIR__)
+    {
+        $this->directory = $baseDirectory;
+        $this->prefix = __NAMESPACE__ . '\\';
+        $this->prefixLength = strlen($this->prefix);
+    }
+
+    /**
+     * Registers the autoloader class with the PHP SPL autoloader.
+     *
+     * @param bool $prepend Prepend the autoloader on the stack instead of appending it.
+     */
+    public static function register($prepend = false)
+    {
+        spl_autoload_register(array(new self, 'autoload'), true, $prepend);
+    }
+
+    /**
+     * Loads a class from a file using its fully qualified name.
+     *
+     * @param string $className Fully qualified name of a class.
+     */
+    public function autoload($className)
+    {
+        if (0 === strpos($className, $this->prefix)) {
+            $parts = explode('\\', substr($className, $this->prefixLength));
+            $filepath = $this->directory.DIRECTORY_SEPARATOR.implode(DIRECTORY_SEPARATOR, $parts).'.php';
+
+            if (is_file($filepath)) {
+                require($filepath);
+            }
+        }
+    }
+}