fixed version info.

1 files changed, 619 insertions, 619 deletions

diff --git a/framework/PradoBase.php b/framework/PradoBase.php
index ead66e1b..4a64d6dd 100644
--- a/framework/PradoBase.php
+++ b/framework/PradoBase.php
@@ -1,619 +1,619 @@
-<?php

-/**

- * PradoBase class file.

- *

- * This is the file that establishes the PRADO component model

- * and error handling mechanism.

- *

- * @author Qiang Xue <qiang.xue@gmail.com>

- * @link http://www.pradosoft.com/

- * @copyright Copyright &copy; 2005-2008 PradoSoft

- * @license http://www.pradosoft.com/license/

- * @version $Id$

- * @package System

- */

-

-/**

- * Defines the PRADO framework installation path.

- */

-if(!defined('PRADO_DIR'))

-	define('PRADO_DIR',dirname(__FILE__));

-/**

- * Defines the default permission for writable directories and files

- */

-if(!defined('PRADO_CHMOD'))

-	define('PRADO_CHMOD',0777);

-

-/**

- * PradoBase class.

- *

- * PradoBase implements a few fundamental static methods.

- *

- * To use the static methods, Use Prado as the class name rather than PradoBase.

- * PradoBase is meant to serve as the base class of Prado. The latter might be

- * rewritten for customization.

- *

- * @author Qiang Xue <qiang.xue@gmail.com>

- * @version $Id$

- * @package System

- * @since 3.0

- */

-class PradoBase

-{

-	/**

-	 * File extension for Prado class files.

-	 */

-	const CLASS_FILE_EXT='.php';

-	/**

-	 * @var array list of path aliases

-	 */

-	private static $_aliases=array('System'=>PRADO_DIR);

-	/**

-	 * @var array list of namespaces currently in use

-	 */

-	private static $_usings=array();

-	/**

-	 * @var TApplication the application instance

-	 */

-	private static $_application=null;

-	/**

-	 * @var TLogger logger instance

-	 */

-	private static $_logger=null;

-

-	/**

-	 * @return string the version of Prado framework

-	 */

-	public static function getVersion()

-	{

-		return '3.1.3a';

-	}

-

-	/**

-	 * Initializes error handlers.

-	 * This method set error and exception handlers to be functions

-	 * defined in this class.

-	 */

-	public static function initErrorHandlers()

-	{

-		/**

-		 * Sets error handler to be Prado::phpErrorHandler

-		 */

-		set_error_handler(array('PradoBase','phpErrorHandler'),error_reporting());

-		/**

-		 * Sets exception handler to be Prado::exceptionHandler

-		 */

-		set_exception_handler(array('PradoBase','exceptionHandler'));

-	}

-

-	/**

-	 * Class autoload loader.

-	 * This method is provided to be invoked within an __autoload() magic method.

-	 * @param string class name

-	 */

-	public static function autoload($className)

-	{

-		include_once($className.self::CLASS_FILE_EXT);

-		if(!class_exists($className,false) && !interface_exists($className,false))

-			self::fatalError("Class file for '$className' cannot be found.");

-	}

-

-	/**

-	 * @param integer the type of "powered logo". Valid values include 0 and 1.

-	 * @return string a string that can be displayed on your Web page showing powered-by-PRADO information

-	 */

-	public static function poweredByPrado($logoType=0)

-	{

-		$logoName=$logoType==1?'powered2':'powered';

-		if(self::$_application!==null)

-		{

-			$am=self::$_application->getAssetManager();

-			$url=$am->publishFilePath(self::getPathOfNamespace('System.'.$logoName,'.gif'));

-		}

-		else

-			$url='http://www.pradosoft.com/images/'.$logoName.'.gif';

-		return '<a title="Powered by PRADO" href="http://www.pradosoft.com/" target="_blank"><img src="'.$url.'" style="border-width:0px;" alt="Powered by PRADO" /></a>';

-	}

-	

-	public static function metaGenerator()

-	{

-		return 'PRADO - http://www.pradosoft.com/';

-	}

-

-	/**

-	 * PHP error handler.

-	 * This method should be registered as PHP error handler using

-	 * {@link set_error_handler}. The method throws an exception that

-	 * contains the error information.

-	 * @param integer the level of the error raised

-	 * @param string the error message

-	 * @param string the filename that the error was raised in

-	 * @param integer the line number the error was raised at

-	 */

-	public static function phpErrorHandler($errno,$errstr,$errfile,$errline)

-	{

-		if(error_reporting()!=0)

-			throw new TPhpErrorException($errno,$errstr,$errfile,$errline);

-	}

-

-	/**

-	 * Default exception handler.

-	 * This method should be registered as default exception handler using

-	 * {@link set_exception_handler}. The method tries to use the errorhandler

-	 * module of the Prado application to handle the exception.

-	 * If the application or the module does not exist, it simply echoes the

-	 * exception.

-	 * @param Exception exception that is not caught

-	 */

-	public static function exceptionHandler($exception)

-	{

-		if(self::$_application!==null && ($errorHandler=self::$_application->getErrorHandler())!==null)

-		{

-			$errorHandler->handleError(null,$exception);

-		}

-		else

-		{

-			echo $exception;

-		}

-		exit(1);

-	}

-

-	/**

-	 * Stores the application instance in the class static member.

-	 * This method helps implement a singleton pattern for TApplication.

-	 * Repeated invocation of this method or the application constructor

-	 * will cause the throw of an exception.

-	 * This method should only be used by framework developers.

-	 * @param TApplication the application instance

-	 * @throws TInvalidOperationException if this method is invoked twice or more.

-	 */

-	public static function setApplication($application)

-	{

-		if(self::$_application!==null)

-			throw new TInvalidOperationException('prado_application_singleton_required');

-		self::$_application=$application;

-	}

-

-	/**

-	 * @return TApplication the application singleton, null if the singleton has not be created yet.

-	 */

-	public static function getApplication()

-	{

-		return self::$_application;

-	}

-

-	/**

-	 * @return string the path of the framework

-	 */

-	public static function getFrameworkPath()

-	{

-		return PRADO_DIR;

-	}

-

-	/**

-	 * Serializes a data.

-	 * The original PHP serialize function has a bug that may not serialize

-	 * properly an object.

-	 * @param mixed data to be serialized

-	 * @return string the serialized data

-	 */

-	public static function serialize($data)

-	{

-		$arr[0]=$data;

-		return serialize($arr);

-	}

-

-	/**

-	 * Unserializes a data.

-	 * The original PHP unserialize function has a bug that may not unserialize

-	 * properly an object.

-	 * @param string data to be unserialized

-	 * @return mixed unserialized data, null if unserialize failed

-	 */

-	public static function unserialize($str)

-	{

-		$arr=unserialize($str);

-		return isset($arr[0])?$arr[0]:null;

-	}

-

-	/**

-	 * Creates a component with the specified type.

-	 * A component type can be either the component class name

-	 * or a namespace referring to the path of the component class file.

-	 * For example, 'TButton', 'System.Web.UI.WebControls.TButton' are both

-	 * valid component type.

-	 * This method can also pass parameters to component constructors.

-	 * All parameters passed to this method except the first one (the component type)

-	 * will be supplied as component constructor parameters.

-	 * @param string component type

-	 * @return TComponent component instance of the specified type

-	 * @throws TInvalidDataValueException if the component type is unknown

-	 */

-	public static function createComponent($type)

-	{

-		self::using($type);

-		if(($pos=strrpos($type,'.'))!==false)

-			$type=substr($type,$pos+1);

-		if(($n=func_num_args())>1)

-		{

-			$args=func_get_args();

-			$s='$args[1]';

-			for($i=2;$i<$n;++$i)

-				$s.=",\$args[$i]";

-			eval("\$component=new $type($s);");

-			return $component;

-		}

-		else

-			return new $type;

-	}

-

-	/**

-	 * Uses a namespace.

-	 * A namespace ending with an asterisk '*' refers to a directory, otherwise it represents a PHP file.

-	 * If the namespace corresponds to a directory, the directory will be appended

-	 * to the include path. If the namespace corresponds to a file, it will be included (include_once).

-	 * @param string namespace to be used

-	 * @param boolean whether to check the existence of the class after the class file is included

-	 * @throws TInvalidDataValueException if the namespace is invalid

-	 */

-	public static function using($namespace,$checkClassExistence=true)

-	{

-		if(isset(self::$_usings[$namespace]) || class_exists($namespace,false))

-			return;

-		if(($pos=strrpos($namespace,'.'))===false)  // a class name

-		{

-			try

-			{

-				include_once($namespace.self::CLASS_FILE_EXT);

-			}

-			catch(Exception $e)

-			{

-				if($checkClassExistence && !class_exists($namespace,false))

-					throw new TInvalidOperationException('prado_component_unknown',$namespace,$e->getMessage());

-				else

-					throw $e;

-			}

-		}

-		else if(($path=self::getPathOfNamespace($namespace,self::CLASS_FILE_EXT))!==null)

-		{

-			$className=substr($namespace,$pos+1);

-			if($className==='*')  // a directory

-			{

-				self::$_usings[$namespace]=$path;

-				set_include_path(get_include_path().PATH_SEPARATOR.$path);

-			}

-			else  // a file

-			{

-				self::$_usings[$namespace]=$path;

-				if(!$checkClassExistence || !class_exists($className,false))

-				{

-					try

-					{

-						include_once($path);

-					}

-					catch(Exception $e)

-					{

-						if($checkClassExistence && !class_exists($className,false))

-							throw new TInvalidOperationException('prado_component_unknown',$className,$e->getMessage());

-						else

-							throw $e;

-					}

-				}

-			}

-		}

-		else

-			throw new TInvalidDataValueException('prado_using_invalid',$namespace);

-	}

-

-	/**

-	 * Translates a namespace into a file path.

-	 * The first segment of the namespace is considered as a path alias

-	 * which is replaced with the actual path. The rest segments are

-	 * subdirectory names appended to the aliased path.

-	 * If the namespace ends with an asterisk '*', it represents a directory;

-	 * Otherwise it represents a file whose extension name is specified by the second parameter (defaults to empty).

-	 * Note, this method does not ensure the existence of the resulting file path.

-	 * @param string namespace

-	 * @param string extension to be appended if the namespace refers to a file

-	 * @return string file path corresponding to the namespace, null if namespace is invalid

-	 */

-	public static function getPathOfNamespace($namespace,$ext='')

-	{

-		if(isset(self::$_usings[$namespace]))

-			return self::$_usings[$namespace];

-		else if(isset(self::$_aliases[$namespace]))

-			return self::$_aliases[$namespace];

-		else

-		{

-			$segs=explode('.',$namespace);

-			$alias=array_shift($segs);

-			if(($file=array_pop($segs))!==null && ($root=self::getPathOfAlias($alias))!==null)

-				return rtrim($root.DIRECTORY_SEPARATOR.implode(DIRECTORY_SEPARATOR ,$segs),'/\\').(($file==='*')?'':DIRECTORY_SEPARATOR.$file.$ext);

-			else

-				return null;

-		}

-	}

-

-	/**

-	 * @param string alias to the path

-	 * @return string the path corresponding to the alias, null if alias not defined.

-	 */

-	public static function getPathOfAlias($alias)

-	{

-		return isset(self::$_aliases[$alias])?self::$_aliases[$alias]:null;

-	}

-

-	protected static function getPathAliases()

-	{

-		return self::$_aliases;

-	}

-

-	/**

-	 * @param string alias to the path

-	 * @param string the path corresponding to the alias

-	 * @throws TInvalidOperationException if the alias is already defined

-	 * @throws TInvalidDataValueException if the path is not a valid file path

-	 */

-	public static function setPathOfAlias($alias,$path)

-	{

-		if(isset(self::$_aliases[$alias]))

-			throw new TInvalidOperationException('prado_alias_redefined',$alias);

-		else if(($rp=realpath($path))!==false && is_dir($rp))

-		{

-			if(strpos($alias,'.')===false)

-				self::$_aliases[$alias]=$rp;

-			else

-				throw new TInvalidDataValueException('prado_aliasname_invalid',$alias);

-		}

-		else

-			throw new TInvalidDataValueException('prado_alias_invalid',$alias,$path);

-	}

-

-	/**

-	 * Fatal error handler.

-	 * This method displays an error message together with the current call stack.

-	 * The application will exit after calling this method.

-	 * @param string error message

-	 */

-	public static function fatalError($msg)

-	{

-		echo '<h1>Fatal Error</h1>';

-		echo '<p>'.$msg.'</p>';

-		if(!function_exists('debug_backtrace'))

-			return;

-		echo '<h2>Debug Backtrace</h2>';

-		echo '<pre>';

-		$index=-1;

-		foreach(debug_backtrace() as $t)

-		{

-			$index++;

-			if($index==0)  // hide the backtrace of this function

-				continue;

-			echo '#'.$index.' ';

-			if(isset($t['file']))

-				echo basename($t['file']) . ':' . $t['line'];

-			else

-			   echo '<PHP inner-code>';

-			echo ' -- ';

-			if(isset($t['class']))

-				echo $t['class'] . $t['type'];

-			echo $t['function'] . '(';

-			if(isset($t['args']) && sizeof($t['args']) > 0)

-			{

-				$count=0;

-				foreach($t['args'] as $item)

-				{

-					if(is_string($item))

-					{

-						$str=htmlentities(str_replace("\r\n", "", $item), ENT_QUOTES);

-						if (strlen($item) > 70)

-							echo "'". substr($str, 0, 70) . "...'";

-						else

-							echo "'" . $str . "'";

-					}

-					else if (is_int($item) || is_float($item))

-						echo $item;

-					else if (is_object($item))

-						echo get_class($item);

-					else if (is_array($item))

-						echo 'array(' . count($item) . ')';

-					else if (is_bool($item))

-						echo $item ? 'true' : 'false';

-					else if ($item === null)

-						echo 'NULL';

-					else if (is_resource($item))

-						echo get_resource_type($item);

-					$count++;

-					if (count($t['args']) > $count)

-						echo ', ';

-				}

-			}

-			echo ")\n";

-		}

-		echo '</pre>';

-		exit(1);

-	}

-

-	/**

-	 * Returns a list of user preferred languages.

-	 * The languages are returned as an array. Each array element

-	 * represents a single language preference. The languages are ordered

-	 * according to user preferences. The first language is the most preferred.

-	 * @return array list of user preferred languages.

-	 */

-	public static function getUserLanguages()

-	{

-		static $languages=null;

-		if($languages===null)

-		{

-			if(!isset($_SERVER['HTTP_ACCEPT_LANGUAGE']))

-				$languages[0]='en';

-			else

-			{

-				$languages=array();

-				foreach(explode(',',$_SERVER['HTTP_ACCEPT_LANGUAGE']) as $language)

-				{

-					$array=split(';q=',trim($language));

-					$languages[trim($array[0])]=isset($array[1])?(float)$array[1]:1.0;

-				}

-				arsort($languages);

-				$languages=array_keys($languages);

-				if(empty($languages))

-					$languages[0]='en';

-			}

-		}

-		return $languages;

-	}

-

-	/**

-	 * Returns the most preferred language by the client user.

-	 * @return string the most preferred language by the client user, defaults to English.

-	 */

-	public static function getPreferredLanguage()

-	{

-		static $language=null;

-		if($language===null)

-		{

-			$langs=Prado::getUserLanguages();

-			$lang=explode('-',$langs[0]);

-			if(empty($lang[0]) || !ctype_alpha($lang[0]))

-				$language='en';

-			else

-				$language=$lang[0];

-		}

-		return $language;

-	}

-

-	/**

-	 * Writes a log message.

-	 * This method wraps {@link log()} by checking the application mode.

-	 * When the application is in Debug mode, debug backtrace information is appended

-	 * to the message and the message is logged at DEBUG level.

-	 * When the application is in Performance mode, this method does nothing.

-	 * Otherwise, the message is logged at INFO level.

-	 * @param string message to be logged

-	 * @param string category of the message

-	 * @see log, getLogger

-	 */

-	public static function trace($msg,$category='Uncategorized')

-	{

-		if(self::$_application && self::$_application->getMode()===TApplicationMode::Performance)

-			return;

-		if(!self::$_application || self::$_application->getMode()===TApplicationMode::Debug)

-		{

-			$trace=debug_backtrace();

-			if(isset($trace[0]['file']) && isset($trace[0]['line']))

-				$msg.=" (line {$trace[0]['line']}, {$trace[0]['file']})";

-			$level=TLogger::DEBUG;

-		}

-		else

-			$level=TLogger::INFO;

-		self::log($msg,$level,$category);

-	}

-

-	/**

-	 * Logs a message.

-	 * Messages logged by this method may be retrieved via {@link TLogger::getLogs}

-	 * and may be recorded in different media, such as file, email, database, using

-	 * {@link TLogRouter}.

-	 * @param string message to be logged

-	 * @param integer level of the message. Valid values include

-	 * TLogger::DEBUG, TLogger::INFO, TLogger::NOTICE, TLogger::WARNING,

-	 * TLogger::ERROR, TLogger::ALERT, TLogger::FATAL.

-	 * @param string category of the message

-	 */

-	public static function log($msg,$level=TLogger::INFO,$category='Uncategorized')

-	{

-		if(self::$_logger===null)

-			self::$_logger=new TLogger;

-		self::$_logger->log($msg,$level,$category);

-	}

-

-	/**

-	 * @return TLogger message logger

-	 */

-	public static function getLogger()

-	{

-		if(self::$_logger===null)

-			self::$_logger=new TLogger;

-		return self::$_logger;

-	}

-

-	/**

-	 * Converts a variable into a string representation.

-	 * This method achieves the similar functionality as var_dump and print_r

-	 * but is more robust when handling complex objects such as PRADO controls.

-	 * @param mixed variable to be dumped

-	 * @param integer maximum depth that the dumper should go into the variable. Defaults to 10.

-	 * @param boolean whether to syntax highlight the output. Defaults to false.

-	 * @return string the string representation of the variable

-	 */

-	public static function varDump($var,$depth=10,$highlight=false)

-	{

-		Prado::using('System.Util.TVarDumper');

-		return TVarDumper::dump($var,$depth,$highlight);

-	}

-

-	/**

-	 * Localize a text to the locale/culture specified in the globalization handler.

-	 * @param string text to be localized.

-	 * @param array a set of parameters to substitute.

-	 * @param string a different catalogue to find the localize text.

-	 * @param string the input AND output charset.

-	 * @return string localized text.

-	 * @see TTranslate::formatter()

-	 * @see TTranslate::init()

-	 */

-	public static function localize($text, $parameters=array(), $catalogue=null, $charset=null)

-	{

-		Prado::using('System.I18N.Translation');

-		$app = Prado::getApplication()->getGlobalization(false);

-

-		$params = array();

-		foreach($parameters as $key => $value)

-			$params['{'.$key.'}'] = $value;

-

-		//no translation handler provided

-		if($app===null || ($config = $app->getTranslationConfiguration())===null)

-			return strtr($text, $params);

-

-		if ($catalogue===null)

-			$catalogue=isset($config['catalogue'])?$config['catalogue']:'messages';

-			

-		Translation::init($catalogue);

-

-		//globalization charset

-		$appCharset = $app===null ? '' : $app->getCharset();

-

-		//default charset

-		$defaultCharset = ($app===null) ? 'UTF-8' : $app->getDefaultCharset();

-

-		//fall back

-		if(empty($charset)) $charset = $appCharset;

-		if(empty($charset)) $charset = $defaultCharset;

-

-		return Translation::formatter($catalogue)->format($text,$params,$catalogue,$charset);

-	}

-}

-

-/**

- * TReflectionClass class.

- * This class was originally written to cope with the incompatibility between different PHP versions.

- * It is equivalent to ReflectionClass for PHP version >= 5.1.0

- * @author Qiang Xue <qiang.xue@gmail.com>

- * @version $Id$

- * @package System

- * @since 3.0

- */

-class TReflectionClass extends ReflectionClass

-{

-}

-

-/**

- * Includes the classes essential for PradoBase class

- */

-PradoBase::using('System.TComponent');

-PradoBase::using('System.Exceptions.TException');

-PradoBase::using('System.Util.TLogger');

-

-?>

+<?php
+/**
+ * PradoBase class file.
+ *
+ * This is the file that establishes the PRADO component model
+ * and error handling mechanism.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @link http://www.pradosoft.com/
+ * @copyright Copyright &copy; 2005-2008 PradoSoft
+ * @license http://www.pradosoft.com/license/
+ * @version $Id$
+ * @package System
+ */
+
+/**
+ * Defines the PRADO framework installation path.
+ */
+if(!defined('PRADO_DIR'))
+	define('PRADO_DIR',dirname(__FILE__));
+/**
+ * Defines the default permission for writable directories and files
+ */
+if(!defined('PRADO_CHMOD'))
+	define('PRADO_CHMOD',0777);
+
+/**
+ * PradoBase class.
+ *
+ * PradoBase implements a few fundamental static methods.
+ *
+ * To use the static methods, Use Prado as the class name rather than PradoBase.
+ * PradoBase is meant to serve as the base class of Prado. The latter might be
+ * rewritten for customization.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id$
+ * @package System
+ * @since 3.0
+ */
+class PradoBase
+{
+	/**
+	 * File extension for Prado class files.
+	 */
+	const CLASS_FILE_EXT='.php';
+	/**
+	 * @var array list of path aliases
+	 */
+	private static $_aliases=array('System'=>PRADO_DIR);
+	/**
+	 * @var array list of namespaces currently in use
+	 */
+	private static $_usings=array();
+	/**
+	 * @var TApplication the application instance
+	 */
+	private static $_application=null;
+	/**
+	 * @var TLogger logger instance
+	 */
+	private static $_logger=null;
+
+	/**
+	 * @return string the version of Prado framework
+	 */
+	public static function getVersion()
+	{
+		return '3.1.4a';
+	}
+
+	/**
+	 * Initializes error handlers.
+	 * This method set error and exception handlers to be functions
+	 * defined in this class.
+	 */
+	public static function initErrorHandlers()
+	{
+		/**
+		 * Sets error handler to be Prado::phpErrorHandler
+		 */
+		set_error_handler(array('PradoBase','phpErrorHandler'),error_reporting());
+		/**
+		 * Sets exception handler to be Prado::exceptionHandler
+		 */
+		set_exception_handler(array('PradoBase','exceptionHandler'));
+	}
+
+	/**
+	 * Class autoload loader.
+	 * This method is provided to be invoked within an __autoload() magic method.
+	 * @param string class name
+	 */
+	public static function autoload($className)
+	{
+		include_once($className.self::CLASS_FILE_EXT);
+		if(!class_exists($className,false) && !interface_exists($className,false))
+			self::fatalError("Class file for '$className' cannot be found.");
+	}
+
+	/**
+	 * @param integer the type of "powered logo". Valid values include 0 and 1.
+	 * @return string a string that can be displayed on your Web page showing powered-by-PRADO information
+	 */
+	public static function poweredByPrado($logoType=0)
+	{
+		$logoName=$logoType==1?'powered2':'powered';
+		if(self::$_application!==null)
+		{
+			$am=self::$_application->getAssetManager();
+			$url=$am->publishFilePath(self::getPathOfNamespace('System.'.$logoName,'.gif'));
+		}
+		else
+			$url='http://www.pradosoft.com/images/'.$logoName.'.gif';
+		return '<a title="Powered by PRADO" href="http://www.pradosoft.com/" target="_blank"><img src="'.$url.'" style="border-width:0px;" alt="Powered by PRADO" /></a>';
+	}
+
+	public static function metaGenerator()
+	{
+		return 'PRADO - http://www.pradosoft.com/';
+	}
+
+	/**
+	 * PHP error handler.
+	 * This method should be registered as PHP error handler using
+	 * {@link set_error_handler}. The method throws an exception that
+	 * contains the error information.
+	 * @param integer the level of the error raised
+	 * @param string the error message
+	 * @param string the filename that the error was raised in
+	 * @param integer the line number the error was raised at
+	 */
+	public static function phpErrorHandler($errno,$errstr,$errfile,$errline)
+	{
+		if(error_reporting()!=0)
+			throw new TPhpErrorException($errno,$errstr,$errfile,$errline);
+	}
+
+	/**
+	 * Default exception handler.
+	 * This method should be registered as default exception handler using
+	 * {@link set_exception_handler}. The method tries to use the errorhandler
+	 * module of the Prado application to handle the exception.
+	 * If the application or the module does not exist, it simply echoes the
+	 * exception.
+	 * @param Exception exception that is not caught
+	 */
+	public static function exceptionHandler($exception)
+	{
+		if(self::$_application!==null && ($errorHandler=self::$_application->getErrorHandler())!==null)
+		{
+			$errorHandler->handleError(null,$exception);
+		}
+		else
+		{
+			echo $exception;
+		}
+		exit(1);
+	}
+
+	/**
+	 * Stores the application instance in the class static member.
+	 * This method helps implement a singleton pattern for TApplication.
+	 * Repeated invocation of this method or the application constructor
+	 * will cause the throw of an exception.
+	 * This method should only be used by framework developers.
+	 * @param TApplication the application instance
+	 * @throws TInvalidOperationException if this method is invoked twice or more.
+	 */
+	public static function setApplication($application)
+	{
+		if(self::$_application!==null)
+			throw new TInvalidOperationException('prado_application_singleton_required');
+		self::$_application=$application;
+	}
+
+	/**
+	 * @return TApplication the application singleton, null if the singleton has not be created yet.
+	 */
+	public static function getApplication()
+	{
+		return self::$_application;
+	}
+
+	/**
+	 * @return string the path of the framework
+	 */
+	public static function getFrameworkPath()
+	{
+		return PRADO_DIR;
+	}
+
+	/**
+	 * Serializes a data.
+	 * The original PHP serialize function has a bug that may not serialize
+	 * properly an object.
+	 * @param mixed data to be serialized
+	 * @return string the serialized data
+	 */
+	public static function serialize($data)
+	{
+		$arr[0]=$data;
+		return serialize($arr);
+	}
+
+	/**
+	 * Unserializes a data.
+	 * The original PHP unserialize function has a bug that may not unserialize
+	 * properly an object.
+	 * @param string data to be unserialized
+	 * @return mixed unserialized data, null if unserialize failed
+	 */
+	public static function unserialize($str)
+	{
+		$arr=unserialize($str);
+		return isset($arr[0])?$arr[0]:null;
+	}
+
+	/**
+	 * Creates a component with the specified type.
+	 * A component type can be either the component class name
+	 * or a namespace referring to the path of the component class file.
+	 * For example, 'TButton', 'System.Web.UI.WebControls.TButton' are both
+	 * valid component type.
+	 * This method can also pass parameters to component constructors.
+	 * All parameters passed to this method except the first one (the component type)
+	 * will be supplied as component constructor parameters.
+	 * @param string component type
+	 * @return TComponent component instance of the specified type
+	 * @throws TInvalidDataValueException if the component type is unknown
+	 */
+	public static function createComponent($type)
+	{
+		self::using($type);
+		if(($pos=strrpos($type,'.'))!==false)
+			$type=substr($type,$pos+1);
+		if(($n=func_num_args())>1)
+		{
+			$args=func_get_args();
+			$s='$args[1]';
+			for($i=2;$i<$n;++$i)
+				$s.=",\$args[$i]";
+			eval("\$component=new $type($s);");
+			return $component;
+		}
+		else
+			return new $type;
+	}
+
+	/**
+	 * Uses a namespace.
+	 * A namespace ending with an asterisk '*' refers to a directory, otherwise it represents a PHP file.
+	 * If the namespace corresponds to a directory, the directory will be appended
+	 * to the include path. If the namespace corresponds to a file, it will be included (include_once).
+	 * @param string namespace to be used
+	 * @param boolean whether to check the existence of the class after the class file is included
+	 * @throws TInvalidDataValueException if the namespace is invalid
+	 */
+	public static function using($namespace,$checkClassExistence=true)
+	{
+		if(isset(self::$_usings[$namespace]) || class_exists($namespace,false))
+			return;
+		if(($pos=strrpos($namespace,'.'))===false)  // a class name
+		{
+			try
+			{
+				include_once($namespace.self::CLASS_FILE_EXT);
+			}
+			catch(Exception $e)
+			{
+				if($checkClassExistence && !class_exists($namespace,false))
+					throw new TInvalidOperationException('prado_component_unknown',$namespace,$e->getMessage());
+				else
+					throw $e;
+			}
+		}
+		else if(($path=self::getPathOfNamespace($namespace,self::CLASS_FILE_EXT))!==null)
+		{
+			$className=substr($namespace,$pos+1);
+			if($className==='*')  // a directory
+			{
+				self::$_usings[$namespace]=$path;
+				set_include_path(get_include_path().PATH_SEPARATOR.$path);
+			}
+			else  // a file
+			{
+				self::$_usings[$namespace]=$path;
+				if(!$checkClassExistence || !class_exists($className,false))
+				{
+					try
+					{
+						include_once($path);
+					}
+					catch(Exception $e)
+					{
+						if($checkClassExistence && !class_exists($className,false))
+							throw new TInvalidOperationException('prado_component_unknown',$className,$e->getMessage());
+						else
+							throw $e;
+					}
+				}
+			}
+		}
+		else
+			throw new TInvalidDataValueException('prado_using_invalid',$namespace);
+	}
+
+	/**
+	 * Translates a namespace into a file path.
+	 * The first segment of the namespace is considered as a path alias
+	 * which is replaced with the actual path. The rest segments are
+	 * subdirectory names appended to the aliased path.
+	 * If the namespace ends with an asterisk '*', it represents a directory;
+	 * Otherwise it represents a file whose extension name is specified by the second parameter (defaults to empty).
+	 * Note, this method does not ensure the existence of the resulting file path.
+	 * @param string namespace
+	 * @param string extension to be appended if the namespace refers to a file
+	 * @return string file path corresponding to the namespace, null if namespace is invalid
+	 */
+	public static function getPathOfNamespace($namespace,$ext='')
+	{
+		if(isset(self::$_usings[$namespace]))
+			return self::$_usings[$namespace];
+		else if(isset(self::$_aliases[$namespace]))
+			return self::$_aliases[$namespace];
+		else
+		{
+			$segs=explode('.',$namespace);
+			$alias=array_shift($segs);
+			if(($file=array_pop($segs))!==null && ($root=self::getPathOfAlias($alias))!==null)
+				return rtrim($root.DIRECTORY_SEPARATOR.implode(DIRECTORY_SEPARATOR ,$segs),'/\\').(($file==='*')?'':DIRECTORY_SEPARATOR.$file.$ext);
+			else
+				return null;
+		}
+	}
+
+	/**
+	 * @param string alias to the path
+	 * @return string the path corresponding to the alias, null if alias not defined.
+	 */
+	public static function getPathOfAlias($alias)
+	{
+		return isset(self::$_aliases[$alias])?self::$_aliases[$alias]:null;
+	}
+
+	protected static function getPathAliases()
+	{
+		return self::$_aliases;
+	}
+
+	/**
+	 * @param string alias to the path
+	 * @param string the path corresponding to the alias
+	 * @throws TInvalidOperationException if the alias is already defined
+	 * @throws TInvalidDataValueException if the path is not a valid file path
+	 */
+	public static function setPathOfAlias($alias,$path)
+	{
+		if(isset(self::$_aliases[$alias]))
+			throw new TInvalidOperationException('prado_alias_redefined',$alias);
+		else if(($rp=realpath($path))!==false && is_dir($rp))
+		{
+			if(strpos($alias,'.')===false)
+				self::$_aliases[$alias]=$rp;
+			else
+				throw new TInvalidDataValueException('prado_aliasname_invalid',$alias);
+		}
+		else
+			throw new TInvalidDataValueException('prado_alias_invalid',$alias,$path);
+	}
+
+	/**
+	 * Fatal error handler.
+	 * This method displays an error message together with the current call stack.
+	 * The application will exit after calling this method.
+	 * @param string error message
+	 */
+	public static function fatalError($msg)
+	{
+		echo '<h1>Fatal Error</h1>';
+		echo '<p>'.$msg.'</p>';
+		if(!function_exists('debug_backtrace'))
+			return;
+		echo '<h2>Debug Backtrace</h2>';
+		echo '<pre>';
+		$index=-1;
+		foreach(debug_backtrace() as $t)
+		{
+			$index++;
+			if($index==0)  // hide the backtrace of this function
+				continue;
+			echo '#'.$index.' ';
+			if(isset($t['file']))
+				echo basename($t['file']) . ':' . $t['line'];
+			else
+			   echo '<PHP inner-code>';
+			echo ' -- ';
+			if(isset($t['class']))
+				echo $t['class'] . $t['type'];
+			echo $t['function'] . '(';
+			if(isset($t['args']) && sizeof($t['args']) > 0)
+			{
+				$count=0;
+				foreach($t['args'] as $item)
+				{
+					if(is_string($item))
+					{
+						$str=htmlentities(str_replace("\r\n", "", $item), ENT_QUOTES);
+						if (strlen($item) > 70)
+							echo "'". substr($str, 0, 70) . "...'";
+						else
+							echo "'" . $str . "'";
+					}
+					else if (is_int($item) || is_float($item))
+						echo $item;
+					else if (is_object($item))
+						echo get_class($item);
+					else if (is_array($item))
+						echo 'array(' . count($item) . ')';
+					else if (is_bool($item))
+						echo $item ? 'true' : 'false';
+					else if ($item === null)
+						echo 'NULL';
+					else if (is_resource($item))
+						echo get_resource_type($item);
+					$count++;
+					if (count($t['args']) > $count)
+						echo ', ';
+				}
+			}
+			echo ")\n";
+		}
+		echo '</pre>';
+		exit(1);
+	}
+
+	/**
+	 * Returns a list of user preferred languages.
+	 * The languages are returned as an array. Each array element
+	 * represents a single language preference. The languages are ordered
+	 * according to user preferences. The first language is the most preferred.
+	 * @return array list of user preferred languages.
+	 */
+	public static function getUserLanguages()
+	{
+		static $languages=null;
+		if($languages===null)
+		{
+			if(!isset($_SERVER['HTTP_ACCEPT_LANGUAGE']))
+				$languages[0]='en';
+			else
+			{
+				$languages=array();
+				foreach(explode(',',$_SERVER['HTTP_ACCEPT_LANGUAGE']) as $language)
+				{
+					$array=split(';q=',trim($language));
+					$languages[trim($array[0])]=isset($array[1])?(float)$array[1]:1.0;
+				}
+				arsort($languages);
+				$languages=array_keys($languages);
+				if(empty($languages))
+					$languages[0]='en';
+			}
+		}
+		return $languages;
+	}
+
+	/**
+	 * Returns the most preferred language by the client user.
+	 * @return string the most preferred language by the client user, defaults to English.
+	 */
+	public static function getPreferredLanguage()
+	{
+		static $language=null;
+		if($language===null)
+		{
+			$langs=Prado::getUserLanguages();
+			$lang=explode('-',$langs[0]);
+			if(empty($lang[0]) || !ctype_alpha($lang[0]))
+				$language='en';
+			else
+				$language=$lang[0];
+		}
+		return $language;
+	}
+
+	/**
+	 * Writes a log message.
+	 * This method wraps {@link log()} by checking the application mode.
+	 * When the application is in Debug mode, debug backtrace information is appended
+	 * to the message and the message is logged at DEBUG level.
+	 * When the application is in Performance mode, this method does nothing.
+	 * Otherwise, the message is logged at INFO level.
+	 * @param string message to be logged
+	 * @param string category of the message
+	 * @see log, getLogger
+	 */
+	public static function trace($msg,$category='Uncategorized')
+	{
+		if(self::$_application && self::$_application->getMode()===TApplicationMode::Performance)
+			return;
+		if(!self::$_application || self::$_application->getMode()===TApplicationMode::Debug)
+		{
+			$trace=debug_backtrace();
+			if(isset($trace[0]['file']) && isset($trace[0]['line']))
+				$msg.=" (line {$trace[0]['line']}, {$trace[0]['file']})";
+			$level=TLogger::DEBUG;
+		}
+		else
+			$level=TLogger::INFO;
+		self::log($msg,$level,$category);
+	}
+
+	/**
+	 * Logs a message.
+	 * Messages logged by this method may be retrieved via {@link TLogger::getLogs}
+	 * and may be recorded in different media, such as file, email, database, using
+	 * {@link TLogRouter}.
+	 * @param string message to be logged
+	 * @param integer level of the message. Valid values include
+	 * TLogger::DEBUG, TLogger::INFO, TLogger::NOTICE, TLogger::WARNING,
+	 * TLogger::ERROR, TLogger::ALERT, TLogger::FATAL.
+	 * @param string category of the message
+	 */
+	public static function log($msg,$level=TLogger::INFO,$category='Uncategorized')
+	{
+		if(self::$_logger===null)
+			self::$_logger=new TLogger;
+		self::$_logger->log($msg,$level,$category);
+	}
+
+	/**
+	 * @return TLogger message logger
+	 */
+	public static function getLogger()
+	{
+		if(self::$_logger===null)
+			self::$_logger=new TLogger;
+		return self::$_logger;
+	}
+
+	/**
+	 * Converts a variable into a string representation.
+	 * This method achieves the similar functionality as var_dump and print_r
+	 * but is more robust when handling complex objects such as PRADO controls.
+	 * @param mixed variable to be dumped
+	 * @param integer maximum depth that the dumper should go into the variable. Defaults to 10.
+	 * @param boolean whether to syntax highlight the output. Defaults to false.
+	 * @return string the string representation of the variable
+	 */
+	public static function varDump($var,$depth=10,$highlight=false)
+	{
+		Prado::using('System.Util.TVarDumper');
+		return TVarDumper::dump($var,$depth,$highlight);
+	}
+
+	/**
+	 * Localize a text to the locale/culture specified in the globalization handler.
+	 * @param string text to be localized.
+	 * @param array a set of parameters to substitute.
+	 * @param string a different catalogue to find the localize text.
+	 * @param string the input AND output charset.
+	 * @return string localized text.
+	 * @see TTranslate::formatter()
+	 * @see TTranslate::init()
+	 */
+	public static function localize($text, $parameters=array(), $catalogue=null, $charset=null)
+	{
+		Prado::using('System.I18N.Translation');
+		$app = Prado::getApplication()->getGlobalization(false);
+
+		$params = array();
+		foreach($parameters as $key => $value)
+			$params['{'.$key.'}'] = $value;
+
+		//no translation handler provided
+		if($app===null || ($config = $app->getTranslationConfiguration())===null)
+			return strtr($text, $params);
+
+		if ($catalogue===null)
+			$catalogue=isset($config['catalogue'])?$config['catalogue']:'messages';
+
+		Translation::init($catalogue);
+
+		//globalization charset
+		$appCharset = $app===null ? '' : $app->getCharset();
+
+		//default charset
+		$defaultCharset = ($app===null) ? 'UTF-8' : $app->getDefaultCharset();
+
+		//fall back
+		if(empty($charset)) $charset = $appCharset;
+		if(empty($charset)) $charset = $defaultCharset;
+
+		return Translation::formatter($catalogue)->format($text,$params,$catalogue,$charset);
+	}
+}
+
+/**
+ * TReflectionClass class.
+ * This class was originally written to cope with the incompatibility between different PHP versions.
+ * It is equivalent to ReflectionClass for PHP version >= 5.1.0
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id$
+ * @package System
+ * @since 3.0
+ */
+class TReflectionClass extends ReflectionClass
+{
+}
+
+/**
+ * Includes the classes essential for PradoBase class
+ */
+PradoBase::using('System.TComponent');
+PradoBase::using('System.Exceptions.TException');
+PradoBase::using('System.Util.TLogger');
+
+?>