From ca5dfa4061f98e097384c29aedeaa7d57ed9be15 Mon Sep 17 00:00:00 2001
From: Taylor Otwell <taylorotwell@gmail.com>
Date: Mon, 27 Feb 2012 14:08:01 -0600
Subject: [PATCH] fixing underscored library auto-loading.

Signed-off-by: Taylor Otwell <taylorotwell@gmail.com>
---
 laravel/autoloader.php | 74 ++++++++++++++++++++++++++++++++++--------
 laravel/helpers.php    |  7 ++--
 2 files changed, 64 insertions(+), 17 deletions(-)

diff --git a/laravel/autoloader.php b/laravel/autoloader.php
index 5748c44a..0ab32851 100644
--- a/laravel/autoloader.php
+++ b/laravel/autoloader.php
@@ -23,6 +23,13 @@ class Autoloader {
 	 */
 	public static $namespaces = array();
 
+	/**
+	 * The mappings for underscored libraries to directories.
+	 *
+	 * @var array
+	 */
+	public static $underscored = array();
+
 	/**
 	 * All of the class aliases registered with the auto-loader.
 	 *
@@ -56,21 +63,49 @@ class_alias(static::$aliases[$class], $class);
 			require static::$mappings[$class];
 		}
 
-		$namespace = root_namespace($class).'\\';
-
 		// If the class namespace is mapped to a directory, we will load the
 		// class using the PSR-0 standards from that directory accounting
-		// for the root of the namespace by trimming it.
+		// for the root of the namespace by trimming it off.
+		$namespace = root_namespace($class).'\\';
+
 		if (isset(static::$namespaces[$namespace]))
 		{
-			$class = substr($class, strlen($namespace));
+			$directory = static::$namespaces[$namespace];
 
-			return static::load_psr($class, static::$namespaces[$namespace]);
+			return static::load_namespaced($class, $namespace, $directory);
 		}
 
+		// If the class uses PEARish style underscores for indicating its
+		// directory structure, we will load the class using the PSR-0
+		// standards from that directory, trimming the root.
+		$namespace = root_namespace($class, '_').'_';
+
+		if (isset(static::$underscored[$namespace]))
+		{
+			$directory = static::$underscored[$namespace];
+
+			return static::load_namespaced($class, $namespace, $directory);
+		}
+
+		// If all else fails we will just iterator through the mapped
+		// PSR-0 directories looking for the class. This is the last
+		// resort and slowest loading option for the class.
 		static::load_psr($class);
 	}
 
+	/**
+	 * Load a namespaced class from a given directory.
+	 *
+	 * @param  string  $class
+	 * @param  string  $namespace
+	 * @param  string  $directory
+	 * @return void
+	 */
+	protected static function load_namespaced($class, $namespace, $directory)
+	{
+		return static::load_psr(substr($class, strlen($namespace)), $directory);
+	}
+
 	/**
 	 * Attempt to resolve a class using the PSR-0 standard.
 	 *
@@ -149,17 +184,32 @@ public static function directories($directory)
 	 */
 	public static function underscored($mappings)
 	{
-		static::namespaces($mappings, '_');
+		$mappings = static::format_mappings($mappings, '_');
+
+		static::$underscored = array_merge($mappings, static::$underscored);
 	}
 
 	/**
 	 * Map namespaces to directories.
 	 *
-	 * @param  array   $mappings
-	 * @param  string  $append
+	 * @param  array  $mappings
 	 * @return void
 	 */
-	public static function namespaces($mappings, $append = '\\')
+	public static function namespaces($mappings)
+	{
+		$mappings = static::format_mappings($mappings, '\\');
+
+		static::$namespaces = array_merge($mappings, static::$namespaces);
+	}
+
+	/**
+	 * Format an array of namespace to directory mappings.
+	 *
+	 * @param  array   $mappings
+	 * @param  string  $append
+	 * @return array
+	 */
+	protected static function format_mappings($mappings, $append)
 	{
 		foreach ($mappings as $namespace => $directory)
 		{
@@ -173,11 +223,7 @@ public static function namespaces($mappings, $append = '\\')
 			$namespaces[$namespace] = head(static::format($directory));
 		}
 
-		// We'll array_merge the new mappings onto the front of the array so
-		// derivative namespaces are not always shadowed by their parents.
-		// For instance, when mappings Laravel\Docs, we don't want the
-		// main Laravel namespace to always override it.
-		static::$namespaces = array_merge($namespaces, static::$namespaces);
+		return $namespaces;
 	}
 
 	/**
diff --git a/laravel/helpers.php b/laravel/helpers.php
index b2dc48ce..f459fe7f 100644
--- a/laravel/helpers.php
+++ b/laravel/helpers.php
@@ -365,13 +365,14 @@ function str_finish($value, $cap)
  * Get the root namespace of a given class.
  *
  * @param  string  $class
+ * @param  string  $separator
  * @return string
  */
-function root_namespace($class)
+function root_namespace($class, $separator = '\\')
 {
-	if (str_contains($class, '\\'))
+	if (str_contains($class, $separator))
 	{
-		return head(explode('\\', $class));
+		return head(explode($separator, $class));
 	}
 }