diff -r 5b37998e522e -r 162c1de6545a web/lib/Zend/Tool/Project/Context/Repository.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/Tool/Project/Context/Repository.php	Fri Mar 11 15:05:35 2011 +0100
@@ -0,0 +1,189 @@
+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category   Zend
+ * @package    Zend_Tool
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id: Repository.php 20096 2010-01-06 02:05:09Z bkarwin $
+ */
+
+require_once 'Zend/Tool/Project/Context/System/Interface.php';
+require_once 'Zend/Tool/Project/Context/System/TopLevelRestrictable.php';
+require_once 'Zend/Tool/Project/Context/System/NotOverwritable.php';
+
+/**
+ * @category   Zend
+ * @package    Zend_Tool
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zend_Tool_Project_Context_Repository implements Countable
+{
+
+    protected static $_instance = null;
+    protected static $_isInitialized = false;
+
+    protected $_shortContextNames = array();
+    protected $_contexts          = array();
+
+    /**
+     * Enter description here...
+     *
+     * @return Zend_Tool_Project_Context_Repository
+     */
+    public static function getInstance()
+    {
+        if (self::$_instance == null) {
+            self::$_instance = new self();
+        }
+
+        return self::$_instance;
+    }
+
+    public static function resetInstance()
+    {
+        self::$_instance = null;
+        self::$_isInitialized = false;
+    }
+
+    protected function __construct()
+    {
+        if (self::$_isInitialized == false) {
+            $this->addContextClass('Zend_Tool_Project_Context_System_ProjectDirectory')
+                 ->addContextClass('Zend_Tool_Project_Context_System_ProjectProfileFile')
+                 ->addContextClass('Zend_Tool_Project_Context_System_ProjectProvidersDirectory');
+            self::$_isInitialized = true;
+        }
+    }
+
+    public function addContextsFromDirectory($directory, $prefix)
+    {
+        $prefix = trim($prefix, '_') . '_';
+        foreach (new DirectoryIterator($directory) as $directoryItem) {
+            if ($directoryItem->isDot() || (substr($directoryItem->getFilename(), -4) !== '.php')) {
+                continue;
+            }
+            $class = $prefix . substr($directoryItem->getFilename(), 0, -4);
+            $this->addContextClass($class);
+        }
+    }
+
+
+    public function addContextClass($contextClass)
+    {
+        if (!class_exists($contextClass)) {
+            require_once 'Zend/Loader.php';
+            Zend_Loader::loadClass($contextClass);
+        }
+        $reflectionContextClass = new ReflectionClass($contextClass);
+        if ($reflectionContextClass->isInstantiable()) {
+            $context = new $contextClass();
+            return $this->addContext($context);
+        }
+        return $this;
+    }
+
+    /**
+     * Enter description here...
+     *
+     * @param Zend_Tool_Project_Context_Interface $context
+     * @return Zend_Tool_Project_Context_Repository
+     */
+    public function addContext(Zend_Tool_Project_Context_Interface $context)
+    {
+        $isSystem       = ($context instanceof Zend_Tool_Project_Context_System_Interface);
+        $isTopLevel     = ($context instanceof Zend_Tool_Project_Context_System_TopLevelRestrictable);
+        $isOverwritable = !($context instanceof Zend_Tool_Project_Context_System_NotOverwritable);
+
+        $index = (count($this->_contexts)) ? max(array_keys($this->_contexts)) + 1 : 1;
+
+        $normalName = $this->_normalizeName($context->getName());
+
+        if (isset($this->_shortContextNames[$normalName]) && ($this->_contexts[$this->_shortContextNames[$normalName]]['isOverwritable'] === false) ) {
+            require_once 'Zend/Tool/Project/Context/Exception.php';
+            throw new Zend_Tool_Project_Context_Exception('Context ' . $context->getName() . ' is not overwriteable.');
+        }
+
+        $this->_shortContextNames[$normalName] = $index;
+        $this->_contexts[$index] = array(
+            'isTopLevel'     => $isTopLevel,
+            'isSystem'       => $isSystem,
+            'isOverwritable' => $isOverwritable,
+            'normalName'     => $normalName,
+            'context'        => $context
+            );
+
+        return $this;
+    }
+
+    public function getContext($name)
+    {
+        if (!$this->hasContext($name)) {
+            require_once 'Zend/Tool/Project/Context/Exception.php';
+            throw new Zend_Tool_Project_Context_Exception('Context by name ' . $name . ' does not exist in the registry.');
+        }
+
+        $name = $this->_normalizeName($name);
+        return clone $this->_contexts[$this->_shortContextNames[$name]]['context'];
+    }
+
+    public function hasContext($name)
+    {
+        $name = $this->_normalizeName($name);
+        return (isset($this->_shortContextNames[$name]) ? true : false);
+    }
+
+    public function isSystemContext($name)
+    {
+        if (!$this->hasContext($name)) {
+            return false;
+        }
+
+        $name = $this->_normalizeName($name);
+        $index = $this->_shortContextNames[$name];
+        return $this->_contexts[$index]['isSystemContext'];
+    }
+
+    public function isTopLevelContext($name)
+    {
+        if (!$this->hasContext($name)) {
+            return false;
+        }
+        $name = $this->_normalizeName($name);
+        $index = $this->_shortContextNames[$name];
+        return $this->_contexts[$index]['isTopLevel'];
+    }
+
+    public function isOverwritableContext($name)
+    {
+        if (!$this->hasContext($name)) {
+            return false;
+        }
+        $name = $this->_normalizeName($name);
+        $index = $this->_shortContextNames[$name];
+        return $this->_contexts[$index]['isOverwritable'];
+    }
+
+    public function count()
+    {
+        return count($this->_contexts);
+    }
+
+    protected function _normalizeName($name)
+    {
+        return strtolower($name);
+    }
+
+}