Initial commit of new Composer-based class loading interface.

composer.json

@@ -18,5 +18,8 @@
 	"require": {
 		"php": ">=5.3.6",
 		"composer/installers": "dev-master"
+	},
+	"autoload": {
+		"psr-0": {"lithium\\": "/" }
 	}
 }

core/Libraries.php

@@ -71,6 +71,13 @@ class Libraries {
 	 */
 	protected static $_configurations = array();
 
+	/**
+	 * A Composer-compatible SPL autoloader implementation.
+	 *
+	 * @var object
+	 */
+	protected static $_loader = null;
+
 	/**
 	 * Contains a cascading list of search path templates, indexed by base object type.
 	 *
@@ -336,6 +343,20 @@ protected static function _configure($config) {
 		}
 	}
 
+	/**
+	 * Configures dependency libraries using Composer's generated autoloader to introspect
+	 * dependencies.
+	 *
+	 * @param string $file A Composer-generated autoload file, which returns a PSR-0-compatible
+	 *        autloader instance.
+	 */
+	public static function loadConfig($file) {
+		if (static::$_loader) {
+			throw new ConfigException("Class loader already configured.");
+		}
+		static::$_loader = require $file;
+	}
+
 	/**
 	 * Allows library information to be retrieved in various ways, including:
 	 *