commit fc7c1f5673cfa3b756e23867e9f4d925c29b9033
Author: Qiang Xue <qiang.xue@gmail.com>
Date:   Thu Apr 14 09:05:15 2011 -0400

    initial import

diff --git a/classmap.txt b/classmap.txt
new file mode 100644
index 0000000..ffc7483
--- /dev/null
+++ b/classmap.txt
@@ -0,0 +1,11 @@
+yii\
+	YiiBase
+	Yii
+	base\
+		Application
+		Behavior
+		Component
+		Event
+		Exception
+		Model
+		Module
diff --git a/framework/base/Behavior.php b/framework/base/Behavior.php
new file mode 100644
index 0000000..74a072c
--- /dev/null
+++ b/framework/base/Behavior.php
@@ -0,0 +1,87 @@
+<?php
+
+namespace yii\base;
+
+class CBehavior extends CComponent implements IBehavior
+{
+	private $_enabled;
+	private $_owner;
+
+	/**
+	 * Declares events and the corresponding event handler methods.
+	 * The events are defined by the {@link owner} component, while the handler
+	 * methods by the behavior class. The handlers will be attached to the corresponding
+	 * events when the behavior is attached to the {@link owner} component; and they
+	 * will be detached from the events when the behavior is detached from the component.
+	 * @return array events (array keys) and the corresponding event handler methods (array values).
+	 */
+	public function events()
+	{
+		return array();
+	}
+
+	/**
+	 * Attaches the behavior object to the component.
+	 * The default implementation will set the {@link owner} property
+	 * and attach event handlers as declared in {@link events}.
+	 * Make sure you call the parent implementation if you override this method.
+	 * @param CComponent $owner the component that this behavior is to be attached to.
+	 */
+	public function attach($owner)
+	{
+		$this->_owner=$owner;
+		foreach($this->events() as $event=>$handler)
+			$owner->attachEventHandler($event,array($this,$handler));
+	}
+
+	/**
+	 * Detaches the behavior object from the component.
+	 * The default implementation will unset the {@link owner} property
+	 * and detach event handlers declared in {@link events}.
+	 * Make sure you call the parent implementation if you override this method.
+	 * @param CComponent $owner the component that this behavior is to be detached from.
+	 */
+	public function detach($owner)
+	{
+		foreach($this->events() as $event=>$handler)
+			$owner->detachEventHandler($event,array($this,$handler));
+		$this->_owner=null;
+	}
+
+	/**
+	 * @return CComponent the owner component that this behavior is attached to.
+	 */
+	public function getOwner()
+	{
+		return $this->_owner;
+	}
+
+	/**
+	 * @return boolean whether this behavior is enabled
+	 */
+	public function getEnabled()
+	{
+		return $this->_enabled;
+	}
+
+	/**
+	 * @param boolean $value whether this behavior is enabled
+	 */
+	public function setEnabled($value)
+	{
+		if($this->_enabled!=$value && $this->_owner)
+		{
+			if($value)
+			{
+				foreach($this->events() as $event=>$handler)
+					$this->_owner->attachEventHandler($event,array($this,$handler));
+			}
+			else
+			{
+				foreach($this->events() as $event=>$handler)
+					$this->_owner->detachEventHandler($event,array($this,$handler));
+			}
+		}
+		$this->_enabled=$value;
+	}
+}
diff --git a/framework/base/Component.php b/framework/base/Component.php
new file mode 100644
index 0000000..3dc4926
--- /dev/null
+++ b/framework/base/Component.php
@@ -0,0 +1,526 @@
+<?php
+
+namespace yii\base;
+
+class Component
+{
+	private $_e;
+	private $_m;
+
+	/**
+	 * Returns a property value, an event handler list or a behavior based on its name.
+	 * Do not call this method. This is a PHP magic method that we override
+	 * to allow using the following syntax to read a property or obtain event handlers:
+	 * <pre>
+	 * $value=$component->propertyName;
+	 * $handlers=$component->eventName;
+	 * </pre>
+	 * @param string $name the property name or event name
+	 * @return mixed the property value, event handlers attached to the event, or the named behavior (since version 1.0.2)
+	 * @throws CException if the property or event is not defined
+	 * @see __set
+	 */
+	public function __get($name)
+	{
+		$getter = 'get' . $name;
+		if(method_exists($this, $getter))
+			return $this->$getter();
+		else if(method_exists($this, $name) && strncasecmp($name, 'on', 2)===0)
+		{
+			$name=strtolower($name);
+			if(!isset($this->_e[$name]))
+				$this->_e[$name]=new yii\collections\Vector;
+			return $this->_e[$name];
+		}
+		else if(isset($this->_m[$name]))
+			return $this->_m[$name];
+		else if(is_array($this->_m)) // has attached behaviors
+		{
+			foreach($this->_m as $object)
+			{
+				if($object->getEnabled() && $object->canGetProperty($name))
+					return $object->$name;
+			}
+		}
+		throw new Exception('Undefined property: ' . get_class($this) . '.' $name);
+	}
+
+	/**
+	 * Sets value of a component property.
+	 * Do not call this method. This is a PHP magic method that we override
+	 * to allow using the following syntax to set a property or attach an event handler
+	 * <pre>
+	 * $this->propertyName=$value;
+	 * $this->eventName=$callback;
+	 * </pre>
+	 * @param string $name the property name or the event name
+	 * @param mixed $value the property value or callback
+	 * @throws CException if the property/event is not defined or the property is read only.
+	 * @see __get
+	 */
+	public function __set($name,$value)
+	{
+		$setter='set'.$name;
+		if(method_exists($this,$setter))
+			return $this->$setter($value);
+		else if(method_exists($this,$name) && strncasecmp($name,'on',2)===0)
+		{
+			$name=strtolower($name);
+			if(!isset($this->_e[$name]))
+				$this->_e[$name]=new yii\collections\Vector;
+			return $this->_e[$name]->add($value);
+		}
+		else if(is_array($this->_m))
+		{
+			foreach($this->_m as $object)
+			{
+				if($object->getEnabled() && $object->canSetProperty($name))
+					return $object->$name=$value;
+			}
+		}
+		if(method_exists($this,'get'.$name))
+			throw new Exception('Unable to set read-only property: ' . get_class($this) . '.' $name);
+		else
+			throw new Exception('Undefined property: ' . get_class($this) . '.' $name);
+	}
+
+	/**
+	 * Checks if a property value is null.
+	 * Do not call this method. This is a PHP magic method that we override
+	 * to allow using isset() to detect if a component property is set or not.
+	 * @param string $name the property name or the event name
+	 * @since 1.0.1
+	 */
+	public function __isset($name)
+	{
+		$getter='get'.$name;
+		if(method_exists($this,$getter))
+			return $this->$getter()!==null;
+		else if(method_exists($this,$name) && strncasecmp($name,'on',2)===0)
+		{
+			$name=strtolower($name);
+			return isset($this->_e[$name]) && $this->_e[$name]->getCount();
+		}
+ 		else if(isset($this->_m[$name]))
+ 			return true;
+		else if(is_array($this->_m))
+		{
+			foreach($this->_m as $object)
+			{
+				if($object->getEnabled() && $object->canGetProperty($name))
+					return true;
+			}
+		}
+		return false;
+	}
+
+	/**
+	 * Sets a component property to be null.
+	 * Do not call this method. This is a PHP magic method that we override
+	 * to allow using unset() to set a component property to be null.
+	 * @param string $name the property name or the event name
+	 * @throws CException if the property is read only.
+	 * @since 1.0.1
+	 */
+	public function __unset($name)
+	{
+		$setter='set'.$name;
+		if(method_exists($this,$setter))
+			$this->$setter(null);
+		else if(method_exists($this,$name) && strncasecmp($name,'on',2)===0)
+			unset($this->_e[strtolower($name)]);
+		else if(isset($this->_m[$name]))
+			$this->detachBehavior($name);
+		else if(is_array($this->_m))
+		{
+			foreach($this->_m as $object)
+			{
+				if($object->getEnabled() && $object->canSetProperty($name))
+					return $object->$name=null;
+			}
+		}
+		else if(method_exists($this,'get'.$name))
+			throw new Exception('Unable to unset read-only property: ' . get_class($this) . '.' $name);
+	}
+
+	/**
+	 * Calls the named method which is not a class method.
+	 * Do not call this method. This is a PHP magic method that we override
+	 * to implement the behavior feature.
+	 * @param string $name the method name
+	 * @param array $parameters method parameters
+	 * @return mixed the method return value
+	 * @since 1.0.2
+	 */
+	public function __call($name,$parameters)
+	{
+		if($this->_m!==null)
+		{
+			foreach($this->_m as $object)
+			{
+				if($object->getEnabled() && method_exists($object,$name))
+					return call_user_func_array(array($object,$name),$parameters);
+			}
+		}
+		if($this->canGetProperty($name) && $this->$name instanceof \Closure)
+			return call_user_func_array($this->$name, $parameters);
+		throw new Exception('Unknown method: ' . get_class($this) . '::' $name . '()');
+	}
+
+	/**
+	 * Returns the named behavior object.
+	 * The name 'asa' stands for 'as a'.
+	 * @param string $behavior the behavior name
+	 * @return IBehavior the behavior object, or null if the behavior does not exist
+	 * @since 1.0.2
+	 */
+	public function asa($behavior)
+	{
+		return isset($this->_m[$behavior]) ? $this->_m[$behavior] : null;
+	}
+
+	/**
+	 * Attaches a list of behaviors to the component.
+	 * Each behavior is indexed by its name and should be an instance of
+	 * {@link IBehavior}, a string specifying the behavior class, or an
+	 * array of the following structure:
+	 * <pre>
+	 * array(
+	 *     'class'=>'path.to.BehaviorClass',
+	 *     'property1'=>'value1',
+	 *     'property2'=>'value2',
+	 * )
+	 * </pre>
+	 * @param array $behaviors list of behaviors to be attached to the component
+	 * @since 1.0.2
+	 */
+	public function attachBehaviors($behaviors)
+	{
+		foreach($behaviors as $name=>$behavior)
+			$this->attachBehavior($name,$behavior);
+	}
+
+	/**
+	 * Detaches all behaviors from the component.
+	 * @since 1.0.2
+	 */
+	public function detachBehaviors()
+	{
+		if($this->_m!==null)
+		{
+			foreach($this->_m as $name=>$behavior)
+				$this->detachBehavior($name);
+			$this->_m=null;
+		}
+	}
+
+	/**
+	 * Attaches a behavior to this component.
+	 * This method will create the behavior object based on the given
+	 * configuration. After that, the behavior object will be initialized
+	 * by calling its {@link IBehavior::attach} method.
+	 * @param string $name the behavior's name. It should uniquely identify this behavior.
+	 * @param mixed $behavior the behavior configuration. This is passed as the first
+	 * parameter to {@link YiiBase::createComponent} to create the behavior object.
+	 * @return IBehavior the behavior object
+	 * @since 1.0.2
+	 */
+	public function attachBehavior($name,$behavior)
+	{
+		if(!($behavior instanceof IBehavior))
+			$behavior=Yii::createComponent($behavior);
+		$behavior->setEnabled(true);
+		$behavior->attach($this);
+		return $this->_m[$name]=$behavior;
+	}
+
+	/**
+	 * Detaches a behavior from the component.
+	 * The behavior's {@link IBehavior::detach} method will be invoked.
+	 * @param string $name the behavior's name. It uniquely identifies the behavior.
+	 * @return IBehavior the detached behavior. Null if the behavior does not exist.
+	 * @since 1.0.2
+	 */
+	public function detachBehavior($name)
+	{
+		if(isset($this->_m[$name]))
+		{
+			$this->_m[$name]->detach($this);
+			$behavior=$this->_m[$name];
+			unset($this->_m[$name]);
+			return $behavior;
+		}
+	}
+
+	/**
+	 * Enables all behaviors attached to this component.
+	 * @since 1.0.2
+	 */
+	public function enableBehaviors()
+	{
+		if($this->_m!==null)
+		{
+			foreach($this->_m as $behavior)
+				$behavior->setEnabled(true);
+		}
+	}
+
+	/**
+	 * Disables all behaviors attached to this component.
+	 * @since 1.0.2
+	 */
+	public function disableBehaviors()
+	{
+		if($this->_m!==null)
+		{
+			foreach($this->_m as $behavior)
+				$behavior->setEnabled(false);
+		}
+	}
+
+	/**
+	 * Enables an attached behavior.
+	 * A behavior is only effective when it is enabled.
+	 * A behavior is enabled when first attached.
+	 * @param string $name the behavior's name. It uniquely identifies the behavior.
+	 * @since 1.0.2
+	 */
+	public function enableBehavior($name)
+	{
+		if(isset($this->_m[$name]))
+			$this->_m[$name]->setEnabled(true);
+	}
+
+	/**
+	 * Disables an attached behavior.
+	 * A behavior is only effective when it is enabled.
+	 * @param string $name the behavior's name. It uniquely identifies the behavior.
+	 * @since 1.0.2
+	 */
+	public function disableBehavior($name)
+	{
+		if(isset($this->_m[$name]))
+			$this->_m[$name]->setEnabled(false);
+	}
+
+	/**
+	 * Determines whether a property is defined.
+	 * A property is defined if there is a getter or setter method
+	 * defined in the class. Note, property names are case-insensitive.
+	 * @param string $name the property name
+	 * @return boolean whether the property is defined
+	 * @see canGetProperty
+	 * @see canSetProperty
+	 */
+	public function hasProperty($name)
+	{
+		return method_exists($this,'get'.$name) || method_exists($this,'set'.$name);
+	}
+
+	/**
+	 * Determines whether a property can be read.
+	 * A property can be read if the class has a getter method
+	 * for the property name. Note, property name is case-insensitive.
+	 * @param string $name the property name
+	 * @param boolean $checkVar whether to check class properties. If false, only properties declared by getters will be checked.
+	 * @return boolean whether the property can be read
+	 * @see canSetProperty
+	 */
+	public function canGetProperty($name, $checkVar=true)
+	{
+		return method_exists($this,'get'.$name) || $checkVar && property_exists($this,$name);
+	}
+
+	/**
+	 * Determines whether a property can be set.
+	 * A property can be written if the class has a setter method
+	 * for the property name. Note, property name is case-insensitive.
+	 * @param string $name the property name
+	 * @param boolean $checkVar whether to check class properties. If false, only properties declared by setters will be checked.
+	 * @return boolean whether the property can be written
+	 * @see canGetProperty
+	 */
+	public function canSetProperty($name, $checkVar=true)
+	{
+		return method_exists($this,'set'.$name) || $checkVar && property_exists($this,$name);
+	}
+
+	/**
+	 * Determines whether an event is defined.
+	 * An event is defined if the class has a method named like 'onXXX'.
+	 * Note, event name is case-insensitive.
+	 * @param string $name the event name
+	 * @return boolean whether an event is defined
+	 */
+	public function hasEvent($name)
+	{
+		return !strncasecmp($name,'on',2) && method_exists($this,$name);
+	}
+
+	/**
+	 * Checks whether the named event has attached handlers.
+	 * @param string $name the event name
+	 * @return boolean whether an event has been attached one or several handlers
+	 */
+	public function hasEventHandler($name)
+	{
+		$name=strtolower($name);
+		return isset($this->_e[$name]) && $this->_e[$name]->getCount()>0;
+	}
+
+	/**
+	 * Returns the list of attached event handlers for an event.
+	 * @param string $name the event name
+	 * @return CList list of attached event handlers for the event
+	 * @throws CException if the event is not defined
+	 */
+	public function getEventHandlers($name)
+	{
+		if($this->hasEvent($name))
+		{
+			$name=strtolower($name);
+			if(!isset($this->_e[$name]))
+				$this->_e[$name]=new CList;
+			return $this->_e[$name];
+		}
+		else
+			throw new CException(Yii::t('yii','Event "{class}.{event}" is not defined.',
+				array('{class}'=>get_class($this), '{event}'=>$name)));
+	}
+
+	/**
+	 * Attaches an event handler to an event.
+	 *
+	 * An event handler must be a valid PHP callback, i.e., a string referring to
+	 * a global function name, or an array containing two elements with
+	 * the first element being an object and the second element a method name
+	 * of the object.
+	 *
+	 * An event handler must be defined with the following signature,
+	 * <pre>
+	 * function handlerName($event) {}
+	 * </pre>
+	 * where $event includes parameters associated with the event.
+	 *
+	 * This is a convenient method of attaching a handler to an event.
+	 * It is equivalent to the following code:
+	 * <pre>
+	 * $component->getEventHandlers($eventName)->add($eventHandler);
+	 * </pre>
+	 *
+	 * Using {@link getEventHandlers}, one can also specify the excution order
+	 * of multiple handlers attaching to the same event. For example:
+	 * <pre>
+	 * $component->getEventHandlers($eventName)->insertAt(0,$eventHandler);
+	 * </pre>
+	 * makes the handler to be invoked first.
+	 *
+	 * @param string $name the event name
+	 * @param callback $handler the event handler
+	 * @throws CException if the event is not defined
+	 * @see detachEventHandler
+	 */
+	public function attachEventHandler($name,$handler)
+	{
+		$this->getEventHandlers($name)->add($handler);
+	}
+
+	/**
+	 * Detaches an existing event handler.
+	 * This method is the opposite of {@link attachEventHandler}.
+	 * @param string $name event name
+	 * @param callback $handler the event handler to be removed
+	 * @return boolean if the detachment process is successful
+	 * @see attachEventHandler
+	 */
+	public function detachEventHandler($name,$handler)
+	{
+		if($this->hasEventHandler($name))
+			return $this->getEventHandlers($name)->remove($handler)!==false;
+		else
+			return false;
+	}
+
+	/**
+	 * Raises an event.
+	 * This method represents the happening of an event. It invokes
+	 * all attached handlers for the event.
+	 * @param string $name the event name
+	 * @param CEvent $event the event parameter
+	 * @throws CException if the event is undefined or an event handler is invalid.
+	 */
+	public function raiseEvent($name,$event)
+	{
+		$name=strtolower($name);
+		if(isset($this->_e[$name]))
+		{
+			foreach($this->_e[$name] as $handler)
+			{
+				if(is_string($handler))
+					call_user_func($handler,$event);
+				else if(is_callable($handler,true))
+				{
+					if(is_array($handler))
+					{
+						// an array: 0 - object, 1 - method name
+						list($object,$method)=$handler;
+						if(is_string($object))	// static method call
+							call_user_func($handler,$event);
+						else if(method_exists($object,$method))
+							$object->$method($event);
+						else
+							throw new CException(Yii::t('yii','Event "{class}.{event}" is attached with an invalid handler "{handler}".',
+								array('{class}'=>get_class($this), '{event}'=>$name, '{handler}'=>$handler[1])));
+					}
+					else // PHP 5.3: anonymous function
+						call_user_func($handler,$event);
+				}
+				else
+					throw new CException(Yii::t('yii','Event "{class}.{event}" is attached with an invalid handler "{handler}".',
+						array('{class}'=>get_class($this), '{event}'=>$name, '{handler}'=>gettype($handler))));
+				// stop further handling if param.handled is set true
+				if(($event instanceof CEvent) && $event->handled)
+					return;
+			}
+		}
+		else if(YII_DEBUG && !$this->hasEvent($name))
+			throw new CException(Yii::t('yii','Event "{class}.{event}" is not defined.',
+				array('{class}'=>get_class($this), '{event}'=>$name)));
+	}
+
+	/**
+	 * Evaluates a PHP expression or callback under the context of this component.
+	 *
+	 * Valid PHP callback can be class method name in the form of
+	 * array(ClassName/Object, MethodName), or anonymous function (only available in PHP 5.3.0 or above).
+	 *
+	 * If a PHP callback is used, the corresponding function/method signature should be
+	 * <pre>
+	 * function foo($param1, $param2, ..., $component) { ... }
+	 * </pre>
+	 * where the array elements in the second parameter to this method will be passed
+	 * to the callback as $param1, $param2, ...; and the last parameter will be the component itself.
+	 *
+	 * If a PHP expression is used, the second parameter will be "extracted" into PHP variables
+	 * that can be directly accessed in the expression. See {@link http://us.php.net/manual/en/function.extract.php PHP extract}
+	 * for more details. In the expression, the component object can be accessed using $this.
+	 *
+	 * @param mixed $_expression_ a PHP expression or PHP callback to be evaluated.
+	 * @param array $_data_ additional parameters to be passed to the above expression/callback.
+	 * @return mixed the expression result
+	 * @since 1.1.0
+	 */
+	public function evaluateExpression($_expression_,$_data_=array())
+	{
+		if(is_string($_expression_))
+		{
+			extract($_data_);
+			return eval('return '.$_expression_.';');
+		}
+		else
+		{
+			$_data_[]=$this;
+			return call_user_func_array($_expression_, $_data_);
+		}
+	}
+}
diff --git a/framework/base/Event.php b/framework/base/Event.php
new file mode 100644
index 0000000..e95888d
--- /dev/null
+++ b/framework/base/Event.php
@@ -0,0 +1,39 @@
+<?php
+
+namespace yii\base;
+
+/**
+ * CEvent is the base class for all event classes.
+ *
+ * It encapsulates the parameters associated with an event.
+ * The {@link sender} property describes who raises the event.
+ * And the {@link handled} property indicates if the event is handled.
+ * If an event handler sets {@link handled} to true, those handlers
+ * that are not invoked yet will not be invoked anymore.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id: CComponent.php 3001 2011-02-24 16:42:44Z alexander.makarow $
+ * @package system.base
+ * @since 1.0
+ */
+class CEvent extends CComponent
+{
+	/**
+	 * @var object the sender of this event
+	 */
+	public $sender;
+	/**
+	 * @var boolean whether the event is handled. Defaults to false.
+	 * When a handler sets this true, the rest of the uninvoked event handlers will not be invoked anymore.
+	 */
+	public $handled=false;
+
+	/**
+	 * Constructor.
+	 * @param mixed $sender sender of the event
+	 */
+	public function __construct($sender=null)
+	{
+		$this->sender=$sender;
+	}
+}
diff --git a/framework/base/YiiBase.php b/framework/base/YiiBase.php
new file mode 100644
index 0000000..42a697d
--- /dev/null
+++ b/framework/base/YiiBase.php
@@ -0,0 +1,795 @@
+<?php
+
+namespace yii;
+
+/**
+ * Gets the application start timestamp.
+ */
+defined('YII_BEGIN_TIME') or define('YII_BEGIN_TIME',microtime(true));
+/**
+ * This constant defines whether the application should be in debug mode or not. Defaults to false.
+ */
+defined('YII_DEBUG') or define('YII_DEBUG',false);
+/**
+ * This constant defines how much call stack information (file name and line number) should be logged by Yii::trace().
+ * Defaults to 0, meaning no backtrace information. If it is greater than 0,
+ * at most that number of call stacks will be logged. Note, only user application call stacks are considered.
+ */
+defined('YII_TRACE_LEVEL') or define('YII_TRACE_LEVEL',0);
+/**
+ * This constant defines whether exception handling should be enabled. Defaults to true.
+ */
+defined('YII_ENABLE_EXCEPTION_HANDLER') or define('YII_ENABLE_EXCEPTION_HANDLER',true);
+/**
+ * This constant defines whether error handling should be enabled. Defaults to true.
+ */
+defined('YII_ENABLE_ERROR_HANDLER') or define('YII_ENABLE_ERROR_HANDLER',true);
+/**
+ * Defines the Yii framework installation path.
+ */
+defined('YII_PATH') or define('YII_PATH',dirname(__FILE__));
+/**
+ * Defines the Zii library installation path.
+ */
+defined('YII_ZII_PATH') or define('YII_ZII_PATH',YII_PATH.DIRECTORY_SEPARATOR.'zii');
+
+/**
+ * YiiBase is a helper class serving common framework functionalities.
+ *
+ * Do not use YiiBase directly. Instead, use its child class {@link Yii} where
+ * you can customize methods of YiiBase.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id: YiiBase.php 2895 2011-01-20 10:33:02Z mdomba $
+ * @package system
+ * @since 1.0
+ */
+class YiiBase
+{
+	/**
+	 * @var array class map used by the Yii autoloading mechanism.
+	 * The array keys are the class names and the array values are the corresponding class file paths.
+	 * @since 1.1.5
+	 */
+	public static $classMap=array();
+
+	private static $_aliases=array('system'=>YII_PATH,'zii'=>YII_ZII_PATH); // alias => path
+	private static $_imports=array();					// alias => class name or directory
+	private static $_includePaths;						// list of include paths
+	private static $_app;
+	private static $_logger;
+
+
+	/**
+	 * @return string the version of Yii framework
+	 */
+	public static function getVersion()
+	{
+		return '1.1.7-dev';
+	}
+
+	/**
+	 * Creates a Web application instance.
+	 * @param mixed $config application configuration.
+	 * If a string, it is treated as the path of the file that contains the configuration;
+	 * If an array, it is the actual configuration information.
+	 * Please make sure you specify the {@link CApplication::basePath basePath} property in the configuration,
+	 * which should point to the directory containing all application logic, template and data.
+	 * If not, the directory will be defaulted to 'protected'.
+	 */
+	public static function createWebApplication($config=null)
+	{
+		return self::createApplication('CWebApplication',$config);
+	}
+
+	/**
+	 * Creates a console application instance.
+	 * @param mixed $config application configuration.
+	 * If a string, it is treated as the path of the file that contains the configuration;
+	 * If an array, it is the actual configuration information.
+	 * Please make sure you specify the {@link CApplication::basePath basePath} property in the configuration,
+	 * which should point to the directory containing all application logic, template and data.
+	 * If not, the directory will be defaulted to 'protected'.
+	 */
+	public static function createConsoleApplication($config=null)
+	{
+		return self::createApplication('CConsoleApplication',$config);
+	}
+
+	/**
+	 * Creates an application of the specified class.
+	 * @param string $class the application class name
+	 * @param mixed $config application configuration. This parameter will be passed as the parameter
+	 * to the constructor of the application class.
+	 * @return mixed the application instance
+	 * @since 1.0.10
+	 */
+	public static function createApplication($class,$config=null)
+	{
+		return new $class($config);
+	}
+
+	/**
+	 * Returns the application singleton, null if the singleton has not been created yet.
+	 * @return CApplication the application singleton, null if the singleton has not been created yet.
+	 */
+	public static function app()
+	{
+		return self::$_app;
+	}
+
+	/**
+	 * Stores the application instance in the class static member.
+	 * This method helps implement a singleton pattern for CApplication.
+	 * Repeated invocation of this method or the CApplication constructor
+	 * will cause the throw of an exception.
+	 * To retrieve the application instance, use {@link app()}.
+	 * @param CApplication $app the application instance. If this is null, the existing
+	 * application singleton will be removed.
+	 * @throws CException if multiple application instances are registered.
+	 */
+	public static function setApplication($app)
+	{
+		if(self::$_app===null || $app===null)
+			self::$_app=$app;
+		else
+			throw new CException(Yii::t('yii','Yii application can only be created once.'));
+	}
+
+	/**
+	 * @return string the path of the framework
+	 */
+	public static function getFrameworkPath()
+	{
+		return YII_PATH;
+	}
+
+	/**
+	 * Creates an object and initializes it based on the given configuration.
+	 *
+	 * The specified configuration can be either a string or an array.
+	 * If the former, the string is treated as the object type which can
+	 * be either the class name or {@link YiiBase::getPathOfAlias class path alias}.
+	 * If the latter, the 'class' element is treated as the object type,
+	 * and the rest name-value pairs in the array are used to initialize
+	 * the corresponding object properties.
+	 *
+	 * Any additional parameters passed to this method will be
+	 * passed to the constructor of the object being created.
+	 *
+	 * NOTE: the array-typed configuration has been supported since version 1.0.1.
+	 *
+	 * @param mixed $config the configuration. It can be either a string or an array.
+	 * @return mixed the created object
+	 * @throws CException if the configuration does not have a 'class' element.
+	 */
+	public static function createComponent($config)
+	{
+		if(is_string($config))
+		{
+			$type=$config;
+			$config=array();
+		}
+		else if(isset($config['class']))
+		{
+			$type=$config['class'];
+			unset($config['class']);
+		}
+		else
+			throw new CException(Yii::t('yii','Object configuration must be an array containing a "class" element.'));
+
+		if(!class_exists($type,false))
+			$type=Yii::import($type,true);
+
+		if(($n=func_num_args())>1)
+		{
+			$args=func_get_args();
+			if($n===2)
+				$object=new $type($args[1]);
+			else if($n===3)
+				$object=new $type($args[1],$args[2]);
+			else if($n===4)
+				$object=new $type($args[1],$args[2],$args[3]);
+			else
+			{
+				unset($args[0]);
+				$class=new ReflectionClass($type);
+				// Note: ReflectionClass::newInstanceArgs() is available for PHP 5.1.3+
+				// $object=$class->newInstanceArgs($args);
+				$object=call_user_func_array(array($class,'newInstance'),$args);
+			}
+		}
+		else
+			$object=new $type;
+
+		foreach($config as $key=>$value)
+			$object->$key=$value;
+
+		return $object;
+	}
+
+	/**
+	 * Imports a class or a directory.
+	 *
+	 * Importing a class is like including the corresponding class file.
+	 * The main difference is that importing a class is much lighter because it only
+	 * includes the class file when the class is referenced the first time.
+	 *
+	 * Importing a directory is equivalent to adding a directory into the PHP include path.
+	 * If multiple directories are imported, the directories imported later will take
+	 * precedence in class file searching (i.e., they are added to the front of the PHP include path).
+	 *
+	 * Path aliases are used to import a class or directory. For example,
+	 * <ul>
+	 *   <li><code>application.components.GoogleMap</code>: import the <code>GoogleMap</code> class.</li>
+	 *   <li><code>application.components.*</code>: import the <code>components</code> directory.</li>
+	 * </ul>
+	 *
+	 * The same path alias can be imported multiple times, but only the first time is effective.
+	 * Importing a directory does not import any of its subdirectories.
+	 *
+	 * Starting from version 1.1.5, this method can also be used to import a class in namespace format
+	 * (available for PHP 5.3 or above only). It is similar to importing a class in path alias format,
+	 * except that the dot separator is replaced by the backslash separator. For example, importing
+	 * <code>application\components\GoogleMap</code> is similar to importing <code>application.components.GoogleMap</code>.
+	 * The difference is that the former class is using qualified name, while the latter unqualified.
+	 *
+	 * Note, importing a class in namespace format requires that the namespace is corresponding to
+	 * a valid path alias if we replace the backslash characters with dot characters.
+	 * For example, the namespace <code>application\components</code> must correspond to a valid
+	 * path alias <code>application.components</code>.
+	 *
+	 * @param string $alias path alias to be imported
+	 * @param boolean $forceInclude whether to include the class file immediately. If false, the class file
+	 * will be included only when the class is being used. This parameter is used only when
+	 * the path alias refers to a class.
+	 * @return string the class name or the directory that this alias refers to
+	 * @throws CException if the alias is invalid
+	 */
+	public static function import($alias,$forceInclude=false)
+	{
+		if(isset(self::$_imports[$alias]))  // previously imported
+			return self::$_imports[$alias];
+
+		if(class_exists($alias,false) || interface_exists($alias,false))
+			return self::$_imports[$alias]=$alias;
+
+		if(($pos=strrpos($alias,'\\'))!==false) // a class name in PHP 5.3 namespace format
+		{
+			$namespace=str_replace('\\','.',ltrim(substr($alias,0,$pos),'\\'));
+			if(($path=self::getPathOfAlias($namespace))!==false)
+			{
+				$classFile=$path.DIRECTORY_SEPARATOR.substr($alias,$pos+1).'.php';
+				if($forceInclude)
+				{
+					if(is_file($classFile))
+						require($classFile);
+					else
+						throw new CException(Yii::t('yii','Alias "{alias}" is invalid. Make sure it points to an existing PHP file.',array('{alias}'=>$alias)));
+					self::$_imports[$alias]=$alias;
+				}
+				else
+					self::$classMap[$alias]=$classFile;
+				return $alias;
+			}
+			else
+				throw new CException(Yii::t('yii','Alias "{alias}" is invalid. Make sure it points to an existing directory.',
+					array('{alias}'=>$namespace)));
+		}
+
+		if(($pos=strrpos($alias,'.'))===false)  // a simple class name
+		{
+			if($forceInclude && self::autoload($alias))
+				self::$_imports[$alias]=$alias;
+			return $alias;
+		}
+
+		$className=(string)substr($alias,$pos+1);
+		$isClass=$className!=='*';
+
+		if($isClass && (class_exists($className,false) || interface_exists($className,false)))
+			return self::$_imports[$alias]=$className;
+
+		if(($path=self::getPathOfAlias($alias))!==false)
+		{
+			if($isClass)
+			{
+				if($forceInclude)
+				{
+					if(is_file($path.'.php'))
+						require($path.'.php');
+					else
+						throw new CException(Yii::t('yii','Alias "{alias}" is invalid. Make sure it points to an existing PHP file.',array('{alias}'=>$alias)));
+					self::$_imports[$alias]=$className;
+				}
+				else
+					self::$classMap[$className]=$path.'.php';
+				return $className;
+			}
+			else  // a directory
+			{
+				if(self::$_includePaths===null)
+				{
+					self::$_includePaths=array_unique(explode(PATH_SEPARATOR,get_include_path()));
+					if(($pos=array_search('.',self::$_includePaths,true))!==false)
+						unset(self::$_includePaths[$pos]);
+				}
+
+				array_unshift(self::$_includePaths,$path);
+
+				if(set_include_path('.'.PATH_SEPARATOR.implode(PATH_SEPARATOR,self::$_includePaths))===false)
+					throw new CException(Yii::t('yii','Unable to import "{alias}". Please check your server configuration to make sure you are allowed to change PHP include_path.',array('{alias}'=>$alias)));
+
+				return self::$_imports[$alias]=$path;
+			}
+		}
+		else
+			throw new CException(Yii::t('yii','Alias "{alias}" is invalid. Make sure it points to an existing directory or file.',
+				array('{alias}'=>$alias)));
+	}
+
+	/**
+	 * Translates an alias into a file path.
+	 * Note, this method does not ensure the existence of the resulting file path.
+	 * It only checks if the root alias is valid or not.
+	 * @param string $alias alias (e.g. system.web.CController)
+	 * @return mixed file path corresponding to the alias, false if the alias is invalid.
+	 */
+	public static function getPathOfAlias($alias)
+	{
+		if(isset(self::$_aliases[$alias]))
+			return self::$_aliases[$alias];
+		else if(($pos=strpos($alias,'.'))!==false)
+		{
+			$rootAlias=substr($alias,0,$pos);
+			if(isset(self::$_aliases[$rootAlias]))
+				return self::$_aliases[$alias]=rtrim(self::$_aliases[$rootAlias].DIRECTORY_SEPARATOR.str_replace('.',DIRECTORY_SEPARATOR,substr($alias,$pos+1)),'*'.DIRECTORY_SEPARATOR);
+			else if(self::$_app instanceof CWebApplication)
+			{
+				if(self::$_app->findModule($rootAlias)!==null)
+					return self::getPathOfAlias($alias);
+			}
+		}
+		return false;
+	}
+
+	/**
+	 * Create a path alias.
+	 * Note, this method neither checks the existence of the path nor normalizes the path.
+	 * @param string $alias alias to the path
+	 * @param string $path the path corresponding to the alias. If this is null, the corresponding
+	 * path alias will be removed.
+	 */
+	public static function setPathOfAlias($alias,$path)
+	{
+		if(empty($path))
+			unset(self::$_aliases[$alias]);
+		else
+			self::$_aliases[$alias]=rtrim($path,'\\/');
+	}
+
+	/**
+	 * Class autoload loader.
+	 * This method is provided to be invoked within an __autoload() magic method.
+	 * @param string $className class name
+	 * @return boolean whether the class has been loaded successfully
+	 */
+	public static function autoload($className)
+	{
+		// use include so that the error PHP file may appear
+		if(isset(self::$_coreClasses[$className]))
+			include(YII_PATH.self::$_coreClasses[$className]);
+		else if(isset(self::$classMap[$className]))
+			include(self::$classMap[$className]);
+		else
+		{
+			if(strpos($className,'\\')===false)
+				include($className.'.php');
+			else  // class name with namespace in PHP 5.3
+			{
+				$namespace=str_replace('\\','.',ltrim($className,'\\'));
+				if(($path=self::getPathOfAlias($namespace))!==false)
+					include($path.'.php');
+				else
+					return false;
+			}
+			return class_exists($className,false) || interface_exists($className,false);
+		}
+		return true;
+	}
+
+	/**
+	 * Writes a trace message.
+	 * This method will only log a message when the application is in debug mode.
+	 * @param string $msg message to be logged
+	 * @param string $category category of the message
+	 * @see log
+	 */
+	public static function trace($msg,$category='application')
+	{
+		if(YII_DEBUG)
+			self::log($msg,CLogger::LEVEL_TRACE,$category);
+	}
+
+	/**
+	 * Logs a message.
+	 * Messages logged by this method may be retrieved via {@link CLogger::getLogs}
+	 * and may be recorded in different media, such as file, email, database, using
+	 * {@link CLogRouter}.
+	 * @param string $msg message to be logged
+	 * @param string $level level of the message (e.g. 'trace', 'warning', 'error'). It is case-insensitive.
+	 * @param string $category category of the message (e.g. 'system.web'). It is case-insensitive.
+	 */
+	public static function log($msg,$level=CLogger::LEVEL_INFO,$category='application')
+	{
+		if(self::$_logger===null)
+			self::$_logger=new CLogger;
+		if(YII_DEBUG && YII_TRACE_LEVEL>0 && $level!==CLogger::LEVEL_PROFILE)
+		{
+			$traces=debug_backtrace();
+			$count=0;
+			foreach($traces as $trace)
+			{
+				if(isset($trace['file'],$trace['line']) && strpos($trace['file'],YII_PATH)!==0)
+				{
+					$msg.="\nin ".$trace['file'].' ('.$trace['line'].')';
+					if(++$count>=YII_TRACE_LEVEL)
+						break;
+				}
+			}
+		}
+		self::$_logger->log($msg,$level,$category);
+	}
+
+	/**
+	 * Marks the begin of a code block for profiling.
+	 * This has to be matched with a call to {@link endProfile()} with the same token.
+	 * The begin- and end- calls must also be properly nested, e.g.,
+	 * <pre>
+	 * Yii::beginProfile('block1');
+	 * Yii::beginProfile('block2');
+	 * Yii::endProfile('block2');
+	 * Yii::endProfile('block1');
+	 * </pre>
+	 * The following sequence is not valid:
+	 * <pre>
+	 * Yii::beginProfile('block1');
+	 * Yii::beginProfile('block2');
+	 * Yii::endProfile('block1');
+	 * Yii::endProfile('block2');
+	 * </pre>
+	 * @param string $token token for the code block
+	 * @param string $category the category of this log message
+	 * @see endProfile
+	 */
+	public static function beginProfile($token,$category='application')
+	{
+		self::log('begin:'.$token,CLogger::LEVEL_PROFILE,$category);
+	}
+
+	/**
+	 * Marks the end of a code block for profiling.
+	 * This has to be matched with a previous call to {@link beginProfile()} with the same token.
+	 * @param string $token token for the code block
+	 * @param string $category the category of this log message
+	 * @see beginProfile
+	 */
+	public static function endProfile($token,$category='application')
+	{
+		self::log('end:'.$token,CLogger::LEVEL_PROFILE,$category);
+	}
+
+	/**
+	 * @return CLogger message logger
+	 */
+	public static function getLogger()
+	{
+		if(self::$_logger!==null)
+			return self::$_logger;
+		else
+			return self::$_logger=new CLogger;
+	}
+
+	/**
+	 * Returns a string that can be displayed on your Web page showing Powered-by-Yii information
+	 * @return string a string that can be displayed on your Web page showing Powered-by-Yii information
+	 */
+	public static function powered()
+	{
+		return 'Powered by <a href="http://www.yiiframework.com/" rel="external">Yii Framework</a>.';
+	}
+
+	/**
+	 * Translates a message to the specified language.
+	 * Starting from version 1.0.2, this method supports choice format (see {@link CChoiceFormat}),
+	 * i.e., the message returned will be chosen from a few candidates according to the given
+	 * number value. This feature is mainly used to solve plural format issue in case
+	 * a message has different plural forms in some languages.
+	 * @param string $category message category. Please use only word letters. Note, category 'yii' is
+	 * reserved for Yii framework core code use. See {@link CPhpMessageSource} for
+	 * more interpretation about message category.
+	 * @param string $message the original message
+	 * @param array $params parameters to be applied to the message using <code>strtr</code>.
+	 * Starting from version 1.0.2, the first parameter can be a number without key.
+	 * And in this case, the method will call {@link CChoiceFormat::format} to choose
+	 * an appropriate message translation.
+	 * Starting from version 1.1.6 you can pass parameter for {@link CChoiceFormat::format}
+	 * or plural forms format without wrapping it with array.
+	 * @param string $source which message source application component to use.
+	 * Defaults to null, meaning using 'coreMessages' for messages belonging to
+	 * the 'yii' category and using 'messages' for the rest messages.
+	 * @param string $language the target language. If null (default), the {@link CApplication::getLanguage application language} will be used.
+	 * This parameter has been available since version 1.0.3.
+	 * @return string the translated message
+	 * @see CMessageSource
+	 */
+	public static function t($category,$message,$params=array(),$source=null,$language=null)
+	{
+		if(self::$_app!==null)
+		{
+			if($source===null)
+				$source=($category==='yii'||$category==='zii')?'coreMessages':'messages';
+			if(($source=self::$_app->getComponent($source))!==null)
+				$message=$source->translate($category,$message,$language);
+		}
+		if($params===array())
+			return $message;
+		if(!is_array($params))
+			$params=array($params);
+		if(isset($params[0])) // number choice
+		{
+			if(strpos($message,'|')!==false)
+			{
+				if(strpos($message,'#')===false)
+				{
+					$chunks=explode('|',$message);
+					$expressions=self::$_app->getLocale($language)->getPluralRules();
+					if($n=min(count($chunks),count($expressions)))
+					{
+						for($i=0;$i<$n;$i++)
+							$chunks[$i]=$expressions[$i].'#'.$chunks[$i];
+
+						$message=implode('|',$chunks);
+					}
+				}
+				$message=CChoiceFormat::format($message,$params[0]);
+			}
+			if(!isset($params['{n}']))
+				$params['{n}']=$params[0];
+			unset($params[0]);
+		}
+		return $params!==array() ? strtr($message,$params) : $message;
+	}
+
+	/**
+	 * Registers a new class autoloader.
+	 * The new autoloader will be placed before {@link autoload} and after
+	 * any other existing autoloaders.
+	 * @param callback $callback a valid PHP callback (function name or array($className,$methodName)).
+	 * @since 1.0.10
+	 */
+	public static function registerAutoloader($callback)
+	{
+		spl_autoload_unregister(array('YiiBase','autoload'));
+		spl_autoload_register($callback);
+		spl_autoload_register(array('YiiBase','autoload'));
+	}
+
+	/**
+	 * @var array class map for core Yii classes.
+	 * NOTE, DO NOT MODIFY THIS ARRAY MANUALLY. IF YOU CHANGE OR ADD SOME CORE CLASSES,
+	 * PLEASE RUN 'build autoload' COMMAND TO UPDATE THIS ARRAY.
+	 */
+	private static $_coreClasses=array(
+		'CApplication' => '/base/CApplication.php',
+		'CApplicationComponent' => '/base/CApplicationComponent.php',
+		'CBehavior' => '/base/CBehavior.php',
+		'CComponent' => '/base/CComponent.php',
+		'CErrorEvent' => '/base/CErrorEvent.php',
+		'CErrorHandler' => '/base/CErrorHandler.php',
+		'CException' => '/base/CException.php',
+		'CExceptionEvent' => '/base/CExceptionEvent.php',
+		'CHttpException' => '/base/CHttpException.php',
+		'CModel' => '/base/CModel.php',
+		'CModelBehavior' => '/base/CModelBehavior.php',
+		'CModelEvent' => '/base/CModelEvent.php',
+		'CModule' => '/base/CModule.php',
+		'CSecurityManager' => '/base/CSecurityManager.php',
+		'CStatePersister' => '/base/CStatePersister.php',
+		'CApcCache' => '/caching/CApcCache.php',
+		'CCache' => '/caching/CCache.php',
+		'CDbCache' => '/caching/CDbCache.php',
+		'CDummyCache' => '/caching/CDummyCache.php',
+		'CEAcceleratorCache' => '/caching/CEAcceleratorCache.php',
+		'CFileCache' => '/caching/CFileCache.php',
+		'CMemCache' => '/caching/CMemCache.php',
+		'CWinCache' => '/caching/CWinCache.php',
+		'CXCache' => '/caching/CXCache.php',
+		'CZendDataCache' => '/caching/CZendDataCache.php',
+		'CCacheDependency' => '/caching/dependencies/CCacheDependency.php',
+		'CChainedCacheDependency' => '/caching/dependencies/CChainedCacheDependency.php',
+		'CDbCacheDependency' => '/caching/dependencies/CDbCacheDependency.php',
+		'CDirectoryCacheDependency' => '/caching/dependencies/CDirectoryCacheDependency.php',
+		'CExpressionDependency' => '/caching/dependencies/CExpressionDependency.php',
+		'CFileCacheDependency' => '/caching/dependencies/CFileCacheDependency.php',
+		'CGlobalStateCacheDependency' => '/caching/dependencies/CGlobalStateCacheDependency.php',
+		'CAttributeCollection' => '/collections/CAttributeCollection.php',
+		'CConfiguration' => '/collections/CConfiguration.php',
+		'CList' => '/collections/CList.php',
+		'CListIterator' => '/collections/CListIterator.php',
+		'CMap' => '/collections/CMap.php',
+		'CMapIterator' => '/collections/CMapIterator.php',
+		'CQueue' => '/collections/CQueue.php',
+		'CQueueIterator' => '/collections/CQueueIterator.php',
+		'CStack' => '/collections/CStack.php',
+		'CStackIterator' => '/collections/CStackIterator.php',
+		'CTypedList' => '/collections/CTypedList.php',
+		'CTypedMap' => '/collections/CTypedMap.php',
+		'CConsoleApplication' => '/console/CConsoleApplication.php',
+		'CConsoleCommand' => '/console/CConsoleCommand.php',
+		'CConsoleCommandRunner' => '/console/CConsoleCommandRunner.php',
+		'CHelpCommand' => '/console/CHelpCommand.php',
+		'CDbCommand' => '/db/CDbCommand.php',
+		'CDbConnection' => '/db/CDbConnection.php',
+		'CDbDataReader' => '/db/CDbDataReader.php',
+		'CDbException' => '/db/CDbException.php',
+		'CDbMigration' => '/db/CDbMigration.php',
+		'CDbTransaction' => '/db/CDbTransaction.php',
+		'CActiveFinder' => '/db/ar/CActiveFinder.php',
+		'CActiveRecord' => '/db/ar/CActiveRecord.php',
+		'CActiveRecordBehavior' => '/db/ar/CActiveRecordBehavior.php',
+		'CDbColumnSchema' => '/db/schema/CDbColumnSchema.php',
+		'CDbCommandBuilder' => '/db/schema/CDbCommandBuilder.php',
+		'CDbCriteria' => '/db/schema/CDbCriteria.php',
+		'CDbExpression' => '/db/schema/CDbExpression.php',
+		'CDbSchema' => '/db/schema/CDbSchema.php',
+		'CDbTableSchema' => '/db/schema/CDbTableSchema.php',
+		'CMssqlColumnSchema' => '/db/schema/mssql/CMssqlColumnSchema.php',
+		'CMssqlCommandBuilder' => '/db/schema/mssql/CMssqlCommandBuilder.php',
+		'CMssqlPdoAdapter' => '/db/schema/mssql/CMssqlPdoAdapter.php',
+		'CMssqlSchema' => '/db/schema/mssql/CMssqlSchema.php',
+		'CMssqlTableSchema' => '/db/schema/mssql/CMssqlTableSchema.php',
+		'CMysqlColumnSchema' => '/db/schema/mysql/CMysqlColumnSchema.php',
+		'CMysqlSchema' => '/db/schema/mysql/CMysqlSchema.php',
+		'CMysqlTableSchema' => '/db/schema/mysql/CMysqlTableSchema.php',
+		'COciColumnSchema' => '/db/schema/oci/COciColumnSchema.php',
+		'COciCommandBuilder' => '/db/schema/oci/COciCommandBuilder.php',
+		'COciSchema' => '/db/schema/oci/COciSchema.php',
+		'COciTableSchema' => '/db/schema/oci/COciTableSchema.php',
+		'CPgsqlColumnSchema' => '/db/schema/pgsql/CPgsqlColumnSchema.php',
+		'CPgsqlSchema' => '/db/schema/pgsql/CPgsqlSchema.php',
+		'CPgsqlTableSchema' => '/db/schema/pgsql/CPgsqlTableSchema.php',
+		'CSqliteColumnSchema' => '/db/schema/sqlite/CSqliteColumnSchema.php',
+		'CSqliteCommandBuilder' => '/db/schema/sqlite/CSqliteCommandBuilder.php',
+		'CSqliteSchema' => '/db/schema/sqlite/CSqliteSchema.php',
+		'CChoiceFormat' => '/i18n/CChoiceFormat.php',
+		'CDateFormatter' => '/i18n/CDateFormatter.php',
+		'CDbMessageSource' => '/i18n/CDbMessageSource.php',
+		'CGettextMessageSource' => '/i18n/CGettextMessageSource.php',
+		'CLocale' => '/i18n/CLocale.php',
+		'CMessageSource' => '/i18n/CMessageSource.php',
+		'CNumberFormatter' => '/i18n/CNumberFormatter.php',
+		'CPhpMessageSource' => '/i18n/CPhpMessageSource.php',
+		'CGettextFile' => '/i18n/gettext/CGettextFile.php',
+		'CGettextMoFile' => '/i18n/gettext/CGettextMoFile.php',
+		'CGettextPoFile' => '/i18n/gettext/CGettextPoFile.php',
+		'CDbLogRoute' => '/logging/CDbLogRoute.php',
+		'CEmailLogRoute' => '/logging/CEmailLogRoute.php',
+		'CFileLogRoute' => '/logging/CFileLogRoute.php',
+		'CLogFilter' => '/logging/CLogFilter.php',
+		'CLogRoute' => '/logging/CLogRoute.php',
+		'CLogRouter' => '/logging/CLogRouter.php',
+		'CLogger' => '/logging/CLogger.php',
+		'CProfileLogRoute' => '/logging/CProfileLogRoute.php',
+		'CWebLogRoute' => '/logging/CWebLogRoute.php',
+		'CDateTimeParser' => '/utils/CDateTimeParser.php',
+		'CFileHelper' => '/utils/CFileHelper.php',
+		'CFormatter' => '/utils/CFormatter.php',
+		'CMarkdownParser' => '/utils/CMarkdownParser.php',
+		'CPropertyValue' => '/utils/CPropertyValue.php',
+		'CTimestamp' => '/utils/CTimestamp.php',
+		'CVarDumper' => '/utils/CVarDumper.php',
+		'CBooleanValidator' => '/validators/CBooleanValidator.php',
+		'CCaptchaValidator' => '/validators/CCaptchaValidator.php',
+		'CCompareValidator' => '/validators/CCompareValidator.php',
+		'CDefaultValueValidator' => '/validators/CDefaultValueValidator.php',
+		'CEmailValidator' => '/validators/CEmailValidator.php',
+		'CExistValidator' => '/validators/CExistValidator.php',
+		'CFileValidator' => '/validators/CFileValidator.php',
+		'CFilterValidator' => '/validators/CFilterValidator.php',
+		'CInlineValidator' => '/validators/CInlineValidator.php',
+		'CNumberValidator' => '/validators/CNumberValidator.php',
+		'CRangeValidator' => '/validators/CRangeValidator.php',
+		'CRegularExpressionValidator' => '/validators/CRegularExpressionValidator.php',
+		'CRequiredValidator' => '/validators/CRequiredValidator.php',
+		'CSafeValidator' => '/validators/CSafeValidator.php',
+		'CStringValidator' => '/validators/CStringValidator.php',
+		'CTypeValidator' => '/validators/CTypeValidator.php',
+		'CUniqueValidator' => '/validators/CUniqueValidator.php',
+		'CUnsafeValidator' => '/validators/CUnsafeValidator.php',
+		'CUrlValidator' => '/validators/CUrlValidator.php',
+		'CValidator' => '/validators/CValidator.php',
+		'CActiveDataProvider' => '/web/CActiveDataProvider.php',
+		'CArrayDataProvider' => '/web/CArrayDataProvider.php',
+		'CAssetManager' => '/web/CAssetManager.php',
+		'CBaseController' => '/web/CBaseController.php',
+		'CCacheHttpSession' => '/web/CCacheHttpSession.php',
+		'CClientScript' => '/web/CClientScript.php',
+		'CController' => '/web/CController.php',
+		'CDataProvider' => '/web/CDataProvider.php',
+		'CDbHttpSession' => '/web/CDbHttpSession.php',
+		'CExtController' => '/web/CExtController.php',
+		'CFormModel' => '/web/CFormModel.php',
+		'CHttpCookie' => '/web/CHttpCookie.php',
+		'CHttpRequest' => '/web/CHttpRequest.php',
+		'CHttpSession' => '/web/CHttpSession.php',
+		'CHttpSessionIterator' => '/web/CHttpSessionIterator.php',
+		'COutputEvent' => '/web/COutputEvent.php',
+		'CPagination' => '/web/CPagination.php',
+		'CSort' => '/web/CSort.php',
+		'CSqlDataProvider' => '/web/CSqlDataProvider.php',
+		'CTheme' => '/web/CTheme.php',
+		'CThemeManager' => '/web/CThemeManager.php',
+		'CUploadedFile' => '/web/CUploadedFile.php',
+		'CUrlManager' => '/web/CUrlManager.php',
+		'CWebApplication' => '/web/CWebApplication.php',
+		'CWebModule' => '/web/CWebModule.php',
+		'CWidgetFactory' => '/web/CWidgetFactory.php',
+		'CAction' => '/web/actions/CAction.php',
+		'CInlineAction' => '/web/actions/CInlineAction.php',
+		'CViewAction' => '/web/actions/CViewAction.php',
+		'CAccessControlFilter' => '/web/auth/CAccessControlFilter.php',
+		'CAuthAssignment' => '/web/auth/CAuthAssignment.php',
+		'CAuthItem' => '/web/auth/CAuthItem.php',
+		'CAuthManager' => '/web/auth/CAuthManager.php',
+		'CBaseUserIdentity' => '/web/auth/CBaseUserIdentity.php',
+		'CDbAuthManager' => '/web/auth/CDbAuthManager.php',
+		'CPhpAuthManager' => '/web/auth/CPhpAuthManager.php',
+		'CUserIdentity' => '/web/auth/CUserIdentity.php',
+		'CWebUser' => '/web/auth/CWebUser.php',
+		'CFilter' => '/web/filters/CFilter.php',
+		'CFilterChain' => '/web/filters/CFilterChain.php',
+		'CInlineFilter' => '/web/filters/CInlineFilter.php',
+		'CForm' => '/web/form/CForm.php',
+		'CFormButtonElement' => '/web/form/CFormButtonElement.php',
+		'CFormElement' => '/web/form/CFormElement.php',
+		'CFormElementCollection' => '/web/form/CFormElementCollection.php',
+		'CFormInputElement' => '/web/form/CFormInputElement.php',
+		'CFormStringElement' => '/web/form/CFormStringElement.php',
+		'CGoogleApi' => '/web/helpers/CGoogleApi.php',
+		'CHtml' => '/web/helpers/CHtml.php',
+		'CJSON' => '/web/helpers/CJSON.php',
+		'CJavaScript' => '/web/helpers/CJavaScript.php',
+		'CPradoViewRenderer' => '/web/renderers/CPradoViewRenderer.php',
+		'CViewRenderer' => '/web/renderers/CViewRenderer.php',
+		'CWebService' => '/web/services/CWebService.php',
+		'CWebServiceAction' => '/web/services/CWebServiceAction.php',
+		'CWsdlGenerator' => '/web/services/CWsdlGenerator.php',
+		'CActiveForm' => '/web/widgets/CActiveForm.php',
+		'CAutoComplete' => '/web/widgets/CAutoComplete.php',
+		'CClipWidget' => '/web/widgets/CClipWidget.php',
+		'CContentDecorator' => '/web/widgets/CContentDecorator.php',
+		'CFilterWidget' => '/web/widgets/CFilterWidget.php',
+		'CFlexWidget' => '/web/widgets/CFlexWidget.php',
+		'CHtmlPurifier' => '/web/widgets/CHtmlPurifier.php',
+		'CInputWidget' => '/web/widgets/CInputWidget.php',
+		'CMarkdown' => '/web/widgets/CMarkdown.php',
+		'CMaskedTextField' => '/web/widgets/CMaskedTextField.php',
+		'CMultiFileUpload' => '/web/widgets/CMultiFileUpload.php',
+		'COutputCache' => '/web/widgets/COutputCache.php',
+		'COutputProcessor' => '/web/widgets/COutputProcessor.php',
+		'CStarRating' => '/web/widgets/CStarRating.php',
+		'CTabView' => '/web/widgets/CTabView.php',
+		'CTextHighlighter' => '/web/widgets/CTextHighlighter.php',
+		'CTreeView' => '/web/widgets/CTreeView.php',
+		'CWidget' => '/web/widgets/CWidget.php',
+		'CCaptcha' => '/web/widgets/captcha/CCaptcha.php',
+		'CCaptchaAction' => '/web/widgets/captcha/CCaptchaAction.php',
+		'CBasePager' => '/web/widgets/pagers/CBasePager.php',
+		'CLinkPager' => '/web/widgets/pagers/CLinkPager.php',
+		'CListPager' => '/web/widgets/pagers/CListPager.php',
+	);
+}
+
+spl_autoload_register(array('YiiBase','autoload'));
+require(YII_PATH.'/base/interfaces.php');
diff --git a/framework/yii.php b/framework/yii.php
new file mode 100644
index 0000000..1603a66
--- /dev/null
+++ b/framework/yii.php
@@ -0,0 +1,29 @@
+<?php
+/**
+ * Yii bootstrap file.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright &copy; 2008-2011 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ * @version $Id: yii.php 2799 2011-01-01 19:31:13Z qiang.xue $
+ * @package system
+ * @since 1.0
+ */
+
+require(__DIR__.'/base/YiiBase.php');
+
+/**
+ * Yii is a helper class serving common framework functionalities.
+ *
+ * It encapsulates {@link YiiBase} which provides the actual implementation.
+ * By writing your own Yii class, you can customize some functionalities of YiiBase.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id: yii.php 2799 2011-01-01 19:31:13Z qiang.xue $
+ * @package system
+ * @since 1.0
+ */
+class Yii extends yii\YiiBase
+{
+}