major session refactoring.

laravel/autoloader.php

@@ -0,0 +1,98 @@
+<?php namespace Laravel;
+
+class Autoloader {
+
+	/**
+	 * The class alises defined for the application.
+	 *
+	 * @var array
+	 */
+	protected $aliases = array();
+
+	/**
+	 * The PSR-0 compliant libraries registered with the auto-loader.
+	 *
+	 * @var array
+	 */
+	protected $libraries = array();
+
+	/**
+	 * The paths to be searched by the auto-loader.
+	 *
+	 * @var array
+	 */
+	protected $paths = array(BASE_PATH, CLASS_PATH);
+
+	/**
+	 * Create a new auto-loader instance.
+	 *
+	 * @param  array  $aliases
+	 * @return void
+	 */
+	public function __construct($aliases = array())
+	{
+		$this->aliases = $aliases;
+	}
+
+	/**
+	 * Load the file corresponding to a given class.
+	 *
+	 * @param  string  $class
+	 * @return void
+	 */
+	public function load($class)
+	{
+		// Most of the core classes are aliases for convenient access in spite
+		// of the namespace. If an alias is defined for the class, we will load
+		// the alias and bail out of the auto-load method.
+		if (array_key_exists($class, $this->aliases))
+		{
+			return class_alias($this->aliases[$class], $class);
+		}
+
+		$file = str_replace('\\', '/', $class);
+
+		$namespace = substr($class, 0, strpos($class, '\\'));
+
+		// If the class namespace exists in the libraries array, it means that
+		// the library is PSR-0 compliant, and we will load it following those
+		// standards. This allows us to add many third-party libraries to an
+		// application and be able to auto-load them automatically.
+		if (array_key_exists($namespace, $this->libraries))
+		{
+			require CLASS_PATH.$this->psr($file);
+		}
+
+		foreach ($this->paths as $path)
+		{
+			if (file_exists($path = $path.strtolower($file).EXT))
+			{
+				require $path;
+
+				return;
+			}
+		}
+
+		// If the namespace exists in the classes directory, we will assume the
+		// library is PSR-0 compliant, and will add the namespace to the array
+		// of libraries and load the class accordingly.
+		if (is_dir(CLASS_PATH.$namespace))
+		{
+			$this->libraries[] = $namespace;
+
+			require CLASS_PATH.$this->psr($file);
+		}
+	}
+
+	/**
+	 * Format a path for PSR-0 compliant auto-loading.
+	 *
+	 * @param  string  $file
+	 * @return string
+	 */
+	protected function psr($file)
+	{
+		return str_replace('_', '/', $file);
+	}
+
+}