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tags/2.0.0-beta
Qiang Xue 14 years ago
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  1. 965
      framework/base/Application.php
  2. 55
      framework/base/ApplicationComponent.php
  3. 501
      framework/base/Module.php

965
framework/base/Application.php
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<?php
/**
* Application class file.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.yiiframework.com/
* @copyright Copyright &copy; 2008-2012 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
/**
* Application is the base class for all application classes.
*
* An application serves as the global context that the user request
* is being processed. It manages a set of application components that
* provide specific functionalities to the whole application.
*
* The core application components provided by Application are the following:
* <ul>
* <li>{@link getErrorHandler errorHandler}: handles PHP errors and
* uncaught exceptions. This application component is dynamically loaded when needed.</li>
* <li>{@link getSecurityManager securityManager}: provides security-related
* services, such as hashing, encryption. This application component is dynamically
* loaded when needed.</li>
* <li>{@link getStatePersister statePersister}: provides global state
* persistence method. This application component is dynamically loaded when needed.</li>
* <li>{@link getCache cache}: provides caching feature. This application component is
* disabled by default.</li>
* <li>{@link getMessages messages}: provides the message source for translating
* application messages. This application component is dynamically loaded when needed.</li>
* <li>{@link getCoreMessages coreMessages}: provides the message source for translating
* Yii framework messages. This application component is dynamically loaded when needed.</li>
* </ul>
*
* Application will undergo the following lifecycles when processing a user request:
* <ol>
* <li>load application configuration;</li>
* <li>set up class autoloader and error handling;</li>
* <li>load static application components;</li>
* <li>{@link onBeginRequest}: preprocess the user request;</li>
* <li>{@link processRequest}: process the user request;</li>
* <li>{@link onEndRequest}: postprocess the user request;</li>
* </ol>
*
* Starting from lifecycle 3, if a PHP error or an uncaught exception occurs,
* the application will switch to its error handling logic and jump to step 6 afterwards.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @since 2.0
*
* @property string $basePath Returns the root path of the application.
* @property CCache $cache Returns the cache component.
* @property CPhpMessageSource $coreMessages Returns the core message translations.
* @property CDateFormatter $dateFormatter Returns the locale-dependent date formatter.
* @property CDbConnection $db Returns the database connection component.
* @property CErrorHandler $errorHandler Returns the error handler component.
* @property string $extensionPath Returns the root directory that holds all third-party extensions.
* @property string $id Returns the unique identifier for the application.
* @property string $language Returns the language that the user is using and the application should be targeted to.
* @property CLocale $locale Returns the locale instance.
* @property string $localeDataPath Returns the directory that contains the locale data.
* @property CMessageSource $messages Returns the application message translations component.
* @property CNumberFormatter $numberFormatter The locale-dependent number formatter.
* @property CHttpRequest $request Returns the request component.
* @property string $runtimePath Returns the directory that stores runtime files.
* @property CSecurityManager $securityManager Returns the security manager component.
* @property CStatePersister $statePersister Returns the state persister component.
* @property string $timeZone Returns the time zone used by this application.
* @property CUrlManager $urlManager Returns the URL manager component.
* @property string $baseUrl Returns the relative URL for the application
* @property string $homeUrl the homepage URL
*/
abstract class Application extends Module
{
/**
* @var string the application name. Defaults to 'My Application'.
*/
public $name = 'My Application';
/**
* @var string the charset currently used for the application. Defaults to 'UTF-8'.
*/
public $charset = 'UTF-8';
/**
* @var string the language that the application is written in. This mainly refers to
* the language that the messages and view files are in. Defaults to 'en_us' (US English).
*/
public $sourceLanguage = 'en_us';
private $_id;
private $_basePath;
private $_runtimePath;
private $_extensionPath;
private $_globalState;
private $_stateChanged;
private $_ended = false;
private $_language;
private $_homeUrl;
/**
* Processes the request.
* This is the place where the actual request processing work is done.
* Derived classes should override this method.
*/
abstract public function processRequest();
/**
* Constructor.
* @param mixed $config application configuration.
* If a string, it is treated as the path of the file that contains the configuration;
* If an array, it is the actual configuration information.
* Please make sure you specify the {@link getBasePath basePath} property in the configuration,
* which should point to the directory containing all application logic, template and data.
* If not, the directory will be defaulted to 'protected'.
*/
public function __construct($config = null)
{
Yii::setApplication($this);
// set basePath at early as possible to avoid trouble
if (is_string($config))
$config = require($config);
if (isset($config['basePath']))
{
$this->setBasePath($config['basePath']);
unset($config['basePath']);
}
else
$this->setBasePath('protected');
Yii::setPathOfAlias('application', $this->getBasePath());
Yii::setPathOfAlias('webroot', dirname($_SERVER['SCRIPT_FILENAME']));
Yii::setPathOfAlias('ext', $this->getBasePath() . DIRECTORY_SEPARATOR . 'extensions');
$this->preinit();
$this->initSystemHandlers();
$this->registerCoreComponents();
$this->configure($config);
$this->attachBehaviors($this->behaviors);
$this->preloadComponents();
$this->init();
}
/**
* Runs the application.
* This method loads static application components. Derived classes usually overrides this
* method to do more application-specific tasks.
* Remember to call the parent implementation so that static application components are loaded.
*/
public function run()
{
if ($this->hasEventHandler('onBeginRequest'))
$this->onBeginRequest(new CEvent($this));
$this->processRequest();
if ($this->hasEventHandler('onEndRequest'))
$this->onEndRequest(new CEvent($this));
}
/**
* Terminates the application.
* This method replaces PHP's exit() function by calling
* {@link onEndRequest} before exiting.
* @param integer $status exit status (value 0 means normal exit while other values mean abnormal exit).
* @param boolean $exit whether to exit the current request. This parameter has been available since version 1.1.5.
* It defaults to true, meaning the PHP's exit() function will be called at the end of this method.
*/
public function end($status = 0, $exit = true)
{
if ($this->hasEventHandler('onEndRequest'))
$this->onEndRequest(new CEvent($this));
if ($exit)
exit($status);
}
/**
* Raised right BEFORE the application processes the request.
* @param CEvent $event the event parameter
*/
public function onBeginRequest($event)
{
$this->raiseEvent('onBeginRequest', $event);
}
/**
* Raised right AFTER the application processes the request.
* @param CEvent $event the event parameter
*/
public function onEndRequest($event)
{
if (!$this->_ended)
{
$this->_ended = true;
$this->raiseEvent('onEndRequest', $event);
}
}
/**
* Returns the unique identifier for the application.
* @return string the unique identifier for the application.
*/
public function getId()
{
if ($this->_id !== null)
return $this->_id;
else
return $this->_id = sprintf('%x', crc32($this->getBasePath() . $this->name));
}
/**
* Sets the unique identifier for the application.
* @param string $id the unique identifier for the application.
*/
public function setId($id)
{
$this->_id = $id;
}
/**
* Returns the root path of the application.
* @return string the root directory of the application. Defaults to 'protected'.
*/
public function getBasePath()
{
return $this->_basePath;
}
/**
* Sets the root directory of the application.
* This method can only be invoked at the begin of the constructor.
* @param string $path the root directory of the application.
* @throws CException if the directory does not exist.
*/
public function setBasePath($path)
{
if (($this->_basePath = realpath($path)) === false || !is_dir($this->_basePath))
throw new CException(Yii::t('yii', 'Application base path "{path}" is not a valid directory.',
array('{path}' => $path)));
}
/**
* Returns the directory that stores runtime files.
* @return string the directory that stores runtime files. Defaults to 'protected/runtime'.
*/
public function getRuntimePath()
{
if ($this->_runtimePath !== null)
return $this->_runtimePath;
else
{
$this->setRuntimePath($this->getBasePath() . DIRECTORY_SEPARATOR . 'runtime');
return $this->_runtimePath;
}
}
/**
* Sets the directory that stores runtime files.
* @param string $path the directory that stores runtime files.
* @throws CException if the directory does not exist or is not writable
*/
public function setRuntimePath($path)
{
if (($runtimePath = realpath($path)) === false || !is_dir($runtimePath) || !is_writable($runtimePath))
throw new CException(Yii::t('yii', 'Application runtime path "{path}" is not valid. Please make sure it is a directory writable by the Web server process.',
array('{path}' => $path)));
$this->_runtimePath = $runtimePath;
}
/**
* Returns the root directory that holds all third-party extensions.
* @return string the directory that contains all extensions. Defaults to the 'extensions' directory under 'protected'.
*/
public function getExtensionPath()
{
return Yii::getPathOfAlias('ext');
}
/**
* Sets the root directory that holds all third-party extensions.
* @param string $path the directory that contains all third-party extensions.
*/
public function setExtensionPath($path)
{
if (($extensionPath = realpath($path)) === false || !is_dir($extensionPath))
throw new CException(Yii::t('yii', 'Extension path "{path}" does not exist.',
array('{path}' => $path)));
Yii::setPathOfAlias('ext', $extensionPath);
}
/**
* Returns the language that the user is using and the application should be targeted to.
* @return string the language that the user is using and the application should be targeted to.
* Defaults to the {@link sourceLanguage source language}.
*/
public function getLanguage()
{
return $this->_language === null ? $this->sourceLanguage : $this->_language;
}
/**
* Specifies which language the application is targeted to.
*
* This is the language that the application displays to end users.
* If set null, it uses the {@link sourceLanguage source language}.
*
* Unless your application needs to support multiple languages, you should always
* set this language to null to maximize the application's performance.
* @param string $language the user language (e.g. 'en_US', 'zh_CN').
* If it is null, the {@link sourceLanguage} will be used.
*/
public function setLanguage($language)
{
$this->_language = $language;
}
/**
* Returns the time zone used by this application.
* This is a simple wrapper of PHP function date_default_timezone_get().
* @return string the time zone used by this application.
* @see http://php.net/manual/en/function.date-default-timezone-get.php
* @since 1.0.9
*/
public function getTimeZone()
{
return date_default_timezone_get();
}
/**
* Sets the time zone used by this application.
* This is a simple wrapper of PHP function date_default_timezone_set().
* @param string $value the time zone used by this application.
* @see http://php.net/manual/en/function.date-default-timezone-set.php
* @since 1.0.9
*/
public function setTimeZone($value)
{
date_default_timezone_set($value);
}
/**
* Returns the localized version of a specified file.
*
* The searching is based on the specified language code. In particular,
* a file with the same name will be looked for under the subdirectory
* named as the locale ID. For example, given the file "path/to/view.php"
* and locale ID "zh_cn", the localized file will be looked for as
* "path/to/zh_cn/view.php". If the file is not found, the original file
* will be returned.
*
* For consistency, it is recommended that the locale ID is given
* in lower case and in the format of LanguageID_RegionID (e.g. "en_us").
*
* @param string $srcFile the original file
* @param string $srcLanguage the language that the original file is in. If null, the application {@link sourceLanguage source language} is used.
* @param string $language the desired language that the file should be localized to. If null, the {@link getLanguage application language} will be used.
* @return string the matching localized file. The original file is returned if no localized version is found
* or if source language is the same as the desired language.
*/
public function findLocalizedFile($srcFile, $srcLanguage = null, $language = null)
{
if ($srcLanguage === null)
$srcLanguage = $this->sourceLanguage;
if ($language === null)
$language = $this->getLanguage();
if ($language === $srcLanguage)
return $srcFile;
$desiredFile = dirname($srcFile) . DIRECTORY_SEPARATOR . $language . DIRECTORY_SEPARATOR . basename($srcFile);
return is_file($desiredFile) ? $desiredFile : $srcFile;
}
/**
* Returns the locale instance.
* @param string $localeID the locale ID (e.g. en_US). If null, the {@link getLanguage application language ID} will be used.
* @return CLocale the locale instance
*/
public function getLocale($localeID = null)
{
return CLocale::getInstance($localeID === null ? $this->getLanguage() : $localeID);
}
/**
* Returns the directory that contains the locale data.
* @return string the directory that contains the locale data. It defaults to 'framework/i18n/data'.
* @since 1.1.0
*/
public function getLocaleDataPath()
{
return CLocale::$dataPath === null ? Yii::getPathOfAlias('system.i18n.data') : CLocale::$dataPath;
}
/**
* Sets the directory that contains the locale data.
* @param string $value the directory that contains the locale data.
* @since 1.1.0
*/
public function setLocaleDataPath($value)
{
CLocale::$dataPath = $value;
}
/**
* @return CNumberFormatter the locale-dependent number formatter.
* The current {@link getLocale application locale} will be used.
*/
public function getNumberFormatter()
{
return $this->getLocale()->getNumberFormatter();
}
/**
* Returns the locale-dependent date formatter.
* @return CDateFormatter the locale-dependent date formatter.
* The current {@link getLocale application locale} will be used.
*/
public function getDateFormatter()
{
return $this->getLocale()->getDateFormatter();
}
/**
* Returns the database connection component.
* @return CDbConnection the database connection
*/
public function getDb()
{
return $this->getComponent('db');
}
/**
* Returns the error handler component.
* @return CErrorHandler the error handler application component.
*/
public function getErrorHandler()
{
return $this->getComponent('errorHandler');
}
/**
* Returns the security manager component.
* @return CSecurityManager the security manager application component.
*/
public function getSecurityManager()
{
return $this->getComponent('securityManager');
}
/**
* Returns the state persister component.
* @return CStatePersister the state persister application component.
*/
public function getStatePersister()
{
return $this->getComponent('statePersister');
}
/**
* Returns the cache component.
* @return CCache the cache application component. Null if the component is not enabled.
*/
public function getCache()
{
return $this->getComponent('cache');
}
/**
* Returns the core message translations component.
* @return CPhpMessageSource the core message translations
*/
public function getCoreMessages()
{
return $this->getComponent('coreMessages');
}
/**
* Returns the application message translations component.
* @return CMessageSource the application message translations
*/
public function getMessages()
{
return $this->getComponent('messages');
}
/**
* Returns the request component.
* @return CHttpRequest the request component
*/
public function getRequest()
{
return $this->getComponent('request');
}
/**
* Returns the URL manager component.
* @return CUrlManager the URL manager component
*/
public function getUrlManager()
{
return $this->getComponent('urlManager');
}
/**
* @return CController the currently active controller. Null is returned in this base class.
* @since 1.1.8
*/
public function getController()
{
return null;
}
/**
* Creates a relative URL based on the given controller and action information.
* @param string $route the URL route. This should be in the format of 'ControllerID/ActionID'.
* @param array $params additional GET parameters (name=>value). Both the name and value will be URL-encoded.
* @param string $ampersand the token separating name-value pairs in the URL.
* @return string the constructed URL
*/
public function createUrl($route, $params = array(), $ampersand = '&')
{
return $this->getUrlManager()->createUrl($route, $params, $ampersand);
}
/**
* Creates an absolute URL based on the given controller and action information.
* @param string $route the URL route. This should be in the format of 'ControllerID/ActionID'.
* @param array $params additional GET parameters (name=>value). Both the name and value will be URL-encoded.
* @param string $schema schema to use (e.g. http, https). If empty, the schema used for the current request will be used.
* @param string $ampersand the token separating name-value pairs in the URL.
* @return string the constructed URL
*/
public function createAbsoluteUrl($route, $params = array(), $schema = '', $ampersand = '&')
{
$url = $this->createUrl($route, $params, $ampersand);
if (strpos($url, 'http') === 0)
return $url;
else
return $this->getRequest()->getHostInfo($schema) . $url;
}
/**
* Returns the relative URL for the application.
* This is a shortcut method to {@link CHttpRequest::getBaseUrl()}.
* @param boolean $absolute whether to return an absolute URL. Defaults to false, meaning returning a relative one.
* This parameter has been available since 1.0.2.
* @return string the relative URL for the application
* @see CHttpRequest::getBaseUrl()
*/
public function getBaseUrl($absolute = false)
{
return $this->getRequest()->getBaseUrl($absolute);
}
/**
* @return string the homepage URL
*/
public function getHomeUrl()
{
if ($this->_homeUrl === null)
{
if ($this->getUrlManager()->showScriptName)
return $this->getRequest()->getScriptUrl();
else
return $this->getRequest()->getBaseUrl() . '/';
}
else
return $this->_homeUrl;
}
/**
* @param string $value the homepage URL
*/
public function setHomeUrl($value)
{
$this->_homeUrl = $value;
}
/**
* Returns a global value.
*
* A global value is one that is persistent across users sessions and requests.
* @param string $key the name of the value to be returned
* @param mixed $defaultValue the default value. If the named global value is not found, this will be returned instead.
* @return mixed the named global value
* @see setGlobalState
*/
public function getGlobalState($key, $defaultValue = null)
{
if ($this->_globalState === null)
$this->loadGlobalState();
if (isset($this->_globalState[$key]))
return $this->_globalState[$key];
else
return $defaultValue;
}
/**
* Sets a global value.
*
* A global value is one that is persistent across users sessions and requests.
* Make sure that the value is serializable and unserializable.
* @param string $key the name of the value to be saved
* @param mixed $value the global value to be saved. It must be serializable.
* @param mixed $defaultValue the default value. If the named global value is the same as this value, it will be cleared from the current storage.
* @see getGlobalState
*/
public function setGlobalState($key, $value, $defaultValue = null)
{
if ($this->_globalState === null)
$this->loadGlobalState();
$changed = $this->_stateChanged;
if ($value === $defaultValue)
{
if (isset($this->_globalState[$key]))
{
unset($this->_globalState[$key]);
$this->_stateChanged = true;
}
}
elseif (!isset($this->_globalState[$key]) || $this->_globalState[$key] !== $value)
{
$this->_globalState[$key] = $value;
$this->_stateChanged = true;
}
if ($this->_stateChanged !== $changed)
$this->attachEventHandler('onEndRequest', array($this, 'saveGlobalState'));
}
/**
* Clears a global value.
*
* The value cleared will no longer be available in this request and the following requests.
* @param string $key the name of the value to be cleared
*/
public function clearGlobalState($key)
{
$this->setGlobalState($key, true, true);
}
/**
* Loads the global state data from persistent storage.
* @see getStatePersister
* @throws CException if the state persister is not available
*/
public function loadGlobalState()
{
$persister = $this->getStatePersister();
if (($this->_globalState = $persister->load()) === null)
$this->_globalState = array();
$this->_stateChanged = false;
$this->detachEventHandler('onEndRequest', array($this, 'saveGlobalState'));
}
/**
* Saves the global state data into persistent storage.
* @see getStatePersister
* @throws CException if the state persister is not available
*/
public function saveGlobalState()
{
if ($this->_stateChanged)
{
$this->_stateChanged = false;
$this->detachEventHandler('onEndRequest', array($this, 'saveGlobalState'));
$this->getStatePersister()->save($this->_globalState);
}
}
/**
* Handles uncaught PHP exceptions.
*
* This method is implemented as a PHP exception handler. It requires
* that constant YII_ENABLE_EXCEPTION_HANDLER be defined true.
*
* This method will first raise an {@link onException} event.
* If the exception is not handled by any event handler, it will call
* {@link getErrorHandler errorHandler} to process the exception.
*
* The application will be terminated by this method.
*
* @param Exception $exception exception that is not caught
*/
public function handleException($exception)
{
// disable error capturing to avoid recursive errors
restore_error_handler();
restore_exception_handler();
$category = 'exception.' . get_class($exception);
if ($exception instanceof CHttpException)
$category .= '.' . $exception->statusCode;
// php <5.2 doesn't support string conversion auto-magically
$message = $exception->__toString();
if (isset($_SERVER['REQUEST_URI']))
$message .= ' REQUEST_URI=' . $_SERVER['REQUEST_URI'];
Yii::log($message, CLogger::LEVEL_ERROR, $category);
try
{
$event = new CExceptionEvent($this, $exception);
$this->onException($event);
if (!$event->handled)
{
// try an error handler
if (($handler = $this->getErrorHandler()) !== null)
$handler->handle($event);
else
$this->displayException($exception);
}
}
catch(Exception $e)
{
$this->displayException($e);
}
try
{
$this->end(1);
}
catch(Exception $e)
{
// use the most primitive way to log error
$msg = get_class($e) . ': ' . $e->getMessage() . ' (' . $e->getFile() . ':' . $e->getLine() . ")\n";
$msg .= $e->getTraceAsString() . "\n";
$msg .= "Previous exception:\n";
$msg .= get_class($exception) . ': ' . $exception->getMessage() . ' (' . $exception->getFile() . ':' . $exception->getLine() . ")\n";
$msg .= $exception->getTraceAsString() . "\n";
$msg .= '$_SERVER=' . var_export($_SERVER, true);
error_log($msg);
exit(1);
}
}
/**
* Handles PHP execution errors such as warnings, notices.
*
* This method is implemented as a PHP error handler. It requires
* that constant YII_ENABLE_ERROR_HANDLER be defined true.
*
* This method will first raise an {@link onError} event.
* If the error is not handled by any event handler, it will call
* {@link getErrorHandler errorHandler} to process the error.
*
* The application will be terminated by this method.
*
* @param integer $code the level of the error raised
* @param string $message the error message
* @param string $file the filename that the error was raised in
* @param integer $line the line number the error was raised at
*/
public function handleError($code, $message, $file, $line)
{
if ($code & error_reporting())
{
// disable error capturing to avoid recursive errors
restore_error_handler();
restore_exception_handler();
$log = "$message ($file:$line)\nStack trace:\n";
$trace = debug_backtrace();
// skip the first 3 stacks as they do not tell the error position
if (count($trace) > 3)
$trace = array_slice($trace, 3);
foreach ($trace as $i => $t)
{
if (!isset($t['file']))
$t['file'] = 'unknown';
if (!isset($t['line']))
$t['line'] = 0;
if (!isset($t['function']))
$t['function'] = 'unknown';
$log .= "#$i {$t['file']}( {$t['line']}): ";
if (isset($t['object']) && is_object($t['object']))
$log .= get_class($t['object']) . '->';
$log .= " {$t['function']}()\n";
}
if (isset($_SERVER['REQUEST_URI']))
$log .= 'REQUEST_URI=' . $_SERVER['REQUEST_URI'];
Yii::log($log, CLogger::LEVEL_ERROR, 'php');
try
{
Yii::import('CErrorEvent', true);
$event = new CErrorEvent($this, $code, $message, $file, $line);
$this->onError($event);
if (!$event->handled)
{
// try an error handler
if (($handler = $this->getErrorHandler()) !== null)
$handler->handle($event);
else
$this->displayError($code, $message, $file, $line);
}
}
catch(Exception $e)
{
$this->displayException($e);
}
try
{
$this->end(1);
}
catch(Exception $e)
{
// use the most primitive way to log error
$msg = get_class($e) . ': ' . $e->getMessage() . ' (' . $e->getFile() . ':' . $e->getLine() . ")\n";
$msg .= $e->getTraceAsString() . "\n";
$msg .= "Previous error:\n";
$msg .= $log . "\n";
$msg .= '$_SERVER=' . var_export($_SERVER, true);
error_log($msg);
exit(1);
}
}
}
/**
* Raised when an uncaught PHP exception occurs.
*
* An event handler can set the {@link CExceptionEvent::handled handled}
* property of the event parameter to be true to indicate no further error
* handling is needed. Otherwise, the {@link getErrorHandler errorHandler}
* application component will continue processing the error.
*
* @param CExceptionEvent $event event parameter
*/
public function onException($event)
{
$this->raiseEvent('onException', $event);
}
/**
* Raised when a PHP execution error occurs.
*
* An event handler can set the {@link CErrorEvent::handled handled}
* property of the event parameter to be true to indicate no further error
* handling is needed. Otherwise, the {@link getErrorHandler errorHandler}
* application component will continue processing the error.
*
* @param CErrorEvent $event event parameter
*/
public function onError($event)
{
$this->raiseEvent('onError', $event);
}
/**
* Displays the captured PHP error.
* This method displays the error in HTML when there is
* no active error handler.
* @param integer $code error code
* @param string $message error message
* @param string $file error file
* @param string $line error line
*/
public function displayError($code, $message, $file, $line)
{
if (YII_DEBUG)
{
echo "<h1>PHP Error [$code]</h1>\n";
echo "<p>$message ($file:$line)</p>\n";
echo '<pre>';
$trace = debug_backtrace();
// skip the first 3 stacks as they do not tell the error position
if (count($trace) > 3)
$trace = array_slice($trace, 3);
foreach ($trace as $i => $t)
{
if (!isset($t['file']))
$t['file'] = 'unknown';
if (!isset($t['line']))
$t['line'] = 0;
if (!isset($t['function']))
$t['function'] = 'unknown';
echo "#$i {$t['file']}( {$t['line']}): ";
if (isset($t['object']) && is_object($t['object']))
echo get_class($t['object']) . '->';
echo " {$t['function']}()\n";
}
echo '</pre>';
}
else
{
echo "<h1>PHP Error [$code]</h1>\n";
echo "<p>$message</p>\n";
}
}
/**
* Displays the uncaught PHP exception.
* This method displays the exception in HTML when there is
* no active error handler.
* @param Exception $exception the uncaught exception
*/
public function displayException($exception)
{
if (YII_DEBUG)
{
echo '<h1>' . get_class($exception) . "</h1>\n";
echo '<p>' . $exception->getMessage() . ' (' . $exception->getFile() . ':' . $exception->getLine() . ')</p>';
echo '<pre>' . $exception->getTraceAsString() . '</pre>';
}
else
{
echo '<h1>' . get_class($exception) . "</h1>\n";
echo '<p>' . $exception->getMessage() . '</p>';
}
}
/**
* Initializes the class autoloader and error handlers.
*/
protected function initSystemHandlers()
{
if (YII_ENABLE_EXCEPTION_HANDLER)
set_exception_handler(array($this, 'handleException'));
if (YII_ENABLE_ERROR_HANDLER)
set_error_handler(array($this, 'handleError'), error_reporting());
}
/**
* Registers the core application components.
* @see setComponents
*/
protected function registerCoreComponents()
{
$components = array(
'coreMessages' => array(
'class' => 'CPhpMessageSource',
'language' => 'en_us',
'basePath' => YII_PATH . DIRECTORY_SEPARATOR . 'messages',
),
'db' => array(
'class' => 'CDbConnection',
),
'messages' => array(
'class' => 'CPhpMessageSource',
),
'errorHandler' => array(
'class' => 'CErrorHandler',
),
'securityManager' => array(
'class' => 'CSecurityManager',
),
'statePersister' => array(
'class' => 'CStatePersister',
),
'urlManager' => array(
'class' => 'CUrlManager',
),
'request' => array(
'class' => 'CHttpRequest',
),
'format' => array(
'class' => 'CFormatter',
),
);
$this->setComponents($components);
}
}

55
framework/base/ApplicationComponent.php
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<?php
/**
* This file contains the base application component class.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.yiiframework.com/
* @copyright Copyright &copy; 2008-2012 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
/**
* ApplicationComponent is the base class for application component classes.
*
* ApplicationComponent implements the basic methods required by {@link IApplicationComponent}.
*
* When developing an application component, try to put application component initialization code in
* the {@link init()} method instead of the constructor. This has the advantage that
* the application component can be customized through application configuration.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @since 2.0
*/
abstract class ApplicationComponent extends Component
{
/**
* @var array the behaviors that should be attached to this component.
* The behaviors will be attached to the component when {@link init} is called.
* Please refer to {@link CModel::behaviors} on how to specify the value of this property.
* @since 1.0.2
*/
public $behaviors = array();
private $_initialized = false;
/**
* Initializes the application component.
* This method is required by {@link IApplicationComponent} and is invoked by application.
* If you override this method, make sure to call the parent implementation
* so that the application component can be marked as initialized.
*/
public function init()
{
$this->attachBehaviors($this->behaviors);
$this->_initialized = true;
}
/**
* Checks if this application component bas been initialized.
* @return boolean whether this application component has been initialized (ie, {@link init()} is invoked).
*/
public function getIsInitialized()
{
return $this->_initialized;
}
}

501
framework/base/Module.php
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@ -0,0 +1,501 @@
<?php
/**
* Module class file.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.yiiframework.com/
* @copyright Copyright &copy; 2008-2012 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\base;
/**
* Module is the base class for module and application classes.
*
* Module mainly manages application components and sub-modules.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @since 2.0
*/
abstract class Module extends Component
{
/**
* @var array the IDs of the application components that should be preloaded.
*/
public $preload = array();
/**
* @var array the behaviors that should be attached to the module.
* The behaviors will be attached to the module when {@link init} is called.
* Please refer to {@link CModel::behaviors} on how to specify the value of this property.
*/
public $behaviors = array();
private $_id;
private $_parentModule;
private $_basePath;
private $_modulePath;
private $_params;
private $_modules = array();
private $_moduleConfig = array();
private $_components = array();
private $_componentConfig = array();
/**
* Constructor.
* @param string $id the ID of this module
* @param CModule $parent the parent module (if any)
* @param mixed $config the module configuration. It can be either an array or
* the path of a PHP file returning the configuration array.
*/
public function __construct($id, $parent, $config = null)
{
$this->_id = $id;
$this->_parentModule = $parent;
// set basePath at early as possible to avoid trouble
if (is_string($config))
$config = require($config);
if (isset($config['basePath']))
{
$this->setBasePath($config['basePath']);
unset($config['basePath']);
}
Yii::setPathOfAlias($id, $this->getBasePath());
$this->preinit();
$this->configure($config);
$this->attachBehaviors($this->behaviors);
$this->preloadComponents();
$this->init();
}
/**
* Getter magic method.
* This method is overridden to support accessing application components
* like reading module properties.
* @param string $name application component or property name
* @return mixed the named property value
*/
public function __get($name)
{
if ($this->hasComponent($name))
return $this->getComponent($name);
else
return parent::__get($name);
}
/**
* Checks if a property value is null.
* This method overrides the parent implementation by checking
* if the named application component is loaded.
* @param string $name the property name or the event name
* @return boolean whether the property value is null
*/
public function __isset($name)
{
if ($this->hasComponent($name))
return $this->getComponent($name) !== null;
else
return parent::__isset($name);
}
/**
* Returns the module ID.
* @return string the module ID.
*/
public function getId()
{
return $this->_id;
}
/**
* Sets the module ID.
* @param string $id the module ID
*/
public function setId($id)
{
$this->_id = $id;
}
/**
* Returns the root directory of the module.
* @return string the root directory of the module. Defaults to the directory containing the module class.
*/
public function getBasePath()
{
if ($this->_basePath === null)
{
$class = new ReflectionClass(get_class($this));
$this->_basePath = dirname($class->getFileName());
}
return $this->_basePath;
}
/**
* Sets the root directory of the module.
* This method can only be invoked at the beginning of the constructor.
* @param string $path the root directory of the module.
* @throws CException if the directory does not exist.
*/
public function setBasePath($path)
{
if (($this->_basePath = realpath($path)) === false || !is_dir($this->_basePath))
throw new CException(Yii::t('yii', 'Base path "{path}" is not a valid directory.',
array('{path}' => $path)));
}
/**
* Returns user-defined parameters.
* @return CAttributeCollection the list of user-defined parameters
*/
public function getParams()
{
if ($this->_params !== null)
return $this->_params;
else
{
$this->_params = new CAttributeCollection;
$this->_params->caseSensitive = true;
return $this->_params;
}
}
/**
* Sets user-defined parameters.
* @param array $value user-defined parameters. This should be in name-value pairs.
*/
public function setParams($value)
{
$params = $this->getParams();
foreach ($value as $k => $v)
$params->add($k, $v);
}
/**
* Returns the directory that contains the application modules.
* @return string the directory that contains the application modules. Defaults to the 'modules' subdirectory of {@link basePath}.
*/
public function getModulePath()
{
if ($this->_modulePath !== null)
return $this->_modulePath;
else
return $this->_modulePath = $this->getBasePath() . DIRECTORY_SEPARATOR . 'modules';
}
/**
* Sets the directory that contains the application modules.
* @param string $value the directory that contains the application modules.
* @throws CException if the directory is invalid
*/
public function setModulePath($value)
{
if (($this->_modulePath = realpath($value)) === false || !is_dir($this->_modulePath))
throw new CException(Yii::t('yii', 'The module path "{path}" is not a valid directory.',
array('{path}' => $value)));
}
/**
* Sets the aliases that are used in the module.
* @param array $aliases list of aliases to be imported
*/
public function setImport($aliases)
{
foreach ($aliases as $alias)
Yii::import($alias);
}
/**
* Defines the root aliases.
* @param array $mappings list of aliases to be defined. The array keys are root aliases,
* while the array values are paths or aliases corresponding to the root aliases.
* For example,
* <pre>
* array(
* 'models'=>'application.models', // an existing alias
* 'extensions'=>'application.extensions', // an existing alias
* 'backend'=>dirname(__FILE__).'/../backend', // a directory
* )
* </pre>
* @since 1.0.5
*/
public function setAliases($mappings)
{
foreach ($mappings as $name => $alias)
{
if (($path = Yii::getPathOfAlias($alias)) !== false)
Yii::setPathOfAlias($name, $path);
else
Yii::setPathOfAlias($name, $alias);
}
}
/**
* Returns the parent module.
* @return CModule the parent module. Null if this module does not have a parent.
*/
public function getParentModule()
{
return $this->_parentModule;
}
/**
* Retrieves the named application module.
* The module has to be declared in {@link modules}. A new instance will be created
* when calling this method with the given ID for the first time.
* @param string $id application module ID (case-sensitive)
* @return CModule the module instance, null if the module is disabled or does not exist.
*/
public function getModule($id)
{
if (isset($this->_modules[$id]) || array_key_exists($id, $this->_modules))
return $this->_modules[$id];
elseif (isset($this->_moduleConfig[$id]))
{
$config = $this->_moduleConfig[$id];
if (!isset($config['enabled']) || $config['enabled'])
{
Yii::trace("Loading \"$id\" module", 'system.base.CModule');
$class = $config['class'];
unset($config['class'], $config['enabled']);
if ($this === Yii::app())
$module = Yii::createComponent($class, $id, null, $config);
else
$module = Yii::createComponent($class, $this->getId() . '/' . $id, $this, $config);
return $this->_modules[$id] = $module;
}
}
}
/**
* Returns a value indicating whether the specified module is installed.
* @param string $id the module ID
* @return boolean whether the specified module is installed.
* @since 1.1.2
*/
public function hasModule($id)
{
return isset($this->_moduleConfig[$id]) || isset($this->_modules[$id]);
}
/**
* Returns the configuration of the currently installed modules.
* @return array the configuration of the currently installed modules (module ID => configuration)
*/
public function getModules()
{
return $this->_moduleConfig;
}
/**
* Configures the sub-modules of this module.
*
* Call this method to declare sub-modules and configure them with their initial property values.
* The parameter should be an array of module configurations. Each array element represents a single module,
* which can be either a string representing the module ID or an ID-configuration pair representing
* a module with the specified ID and the initial property values.
*
* For example, the following array declares two modules:
* <pre>
* array(
* 'admin', // a single module ID
* 'payment'=>array( // ID-configuration pair
* 'server'=>'paymentserver.com',
* ),
* )
* </pre>
*
* By default, the module class is determined using the expression <code>ucfirst($moduleID).'Module'</code>.
* And the class file is located under <code>modules/$moduleID</code>.
* You may override this default by explicitly specifying the 'class' option in the configuration.
*
* You may also enable or disable a module by specifying the 'enabled' option in the configuration.
*
* @param array $modules module configurations.
*/
public function setModules($modules)
{
foreach ($modules as $id => $module)
{
if (is_int($id))
{
$id = $module;
$module = array();
}
if (!isset($module['class']))
{
Yii::setPathOfAlias($id, $this->getModulePath() . DIRECTORY_SEPARATOR . $id);
$module['class'] = $id . '.' . ucfirst($id) . 'Module';
}
if (isset($this->_moduleConfig[$id]))
$this->_moduleConfig[$id] = CMap::mergeArray($this->_moduleConfig[$id], $module);
else
$this->_moduleConfig[$id] = $module;
}
}
/**
* Checks whether the named component exists.
* @param string $id application component ID
* @return boolean whether the named application component exists (including both loaded and disabled.)
*/
public function hasComponent($id)
{
return isset($this->_components[$id]) || isset($this->_componentConfig[$id]);
}
/**
* Retrieves the named application component.
* @param string $id application component ID (case-sensitive)
* @param boolean $createIfNull whether to create the component if it doesn't exist yet. This parameter
* has been available since version 1.0.6.
* @return IApplicationComponent the application component instance, null if the application component is disabled or does not exist.
* @see hasComponent
*/
public function getComponent($id, $createIfNull = true)
{
if (isset($this->_components[$id]))
return $this->_components[$id];
elseif (isset($this->_componentConfig[$id]) && $createIfNull)
{
$config = $this->_componentConfig[$id];
if (!isset($config['enabled']) || $config['enabled'])
{
Yii::trace("Loading \"$id\" application component", 'system.CModule');
unset($config['enabled']);
$component = Yii::createComponent($config);
$component->init();
return $this->_components[$id] = $component;
}
}
}
/**
* Puts a component under the management of the module.
* The component will be initialized by calling its {@link CApplicationComponent::init() init()}
* method if it has not done so.
* @param string $id component ID
* @param IApplicationComponent $component the component to be added to the module.
* If this parameter is null, it will unload the component from the module.
*/
public function setComponent($id, $component)
{
if ($component === null)
unset($this->_components[$id]);
else
{
$this->_components[$id] = $component;
if (!$component->getIsInitialized())
$component->init();
}
}
/**
* Returns the application components.
* @param boolean $loadedOnly whether to return the loaded components only. If this is set false,
* then all components specified in the configuration will be returned, whether they are loaded or not.
* Loaded components will be returned as objects, while unloaded components as configuration arrays.
* This parameter has been available since version 1.1.3.
* @return array the application components (indexed by their IDs)
*/
public function getComponents($loadedOnly = true)
{
if ($loadedOnly)
return $this->_components;
else
return array_merge($this->_componentConfig, $this->_components);
}
/**
* Sets the application components.
*
* When a configuration is used to specify a component, it should consist of
* the component's initial property values (name-value pairs). Additionally,
* a component can be enabled (default) or disabled by specifying the 'enabled' value
* in the configuration.
*
* If a configuration is specified with an ID that is the same as an existing
* component or configuration, the existing one will be replaced silently.
*
* The following is the configuration for two components:
* <pre>
* array(
* 'db'=>array(
* 'class'=>'CDbConnection',
* 'connectionString'=>'sqlite:path/to/file.db',
* ),
* 'cache'=>array(
* 'class'=>'CDbCache',
* 'connectionID'=>'db',
* 'enabled'=>!YII_DEBUG, // enable caching in non-debug mode
* ),
* )
* </pre>
*
* @param array $components application components(id=>component configuration or instances)
* @param boolean $merge whether to merge the new component configuration with the existing one.
* Defaults to true, meaning the previously registered component configuration of the same ID
* will be merged with the new configuration. If false, the existing configuration will be replaced completely.
*/
public function setComponents($components, $merge = true)
{
foreach ($components as $id => $component)
{
if ($component instanceof IApplicationComponent)
$this->setComponent($id, $component);
elseif (isset($this->_componentConfig[$id]) && $merge)
$this->_componentConfig[$id] = CMap::mergeArray($this->_componentConfig[$id], $component);
else
$this->_componentConfig[$id] = $component;
}
}
/**
* Configures the module with the specified configuration.
* @param array $config the configuration array
*/
public function configure($config)
{
if (is_array($config))
{
foreach ($config as $key => $value)
$this->$key = $value;
}
}
/**
* Loads static application components.
*/
protected function preloadComponents()
{
foreach ($this->preload as $id)
$this->getComponent($id);
}
/**
* Preinitializes the module.
* This method is called at the beginning of the module constructor.
* You may override this method to do some customized preinitialization work.
* Note that at this moment, the module is not configured yet.
* @see init
*/
protected function preinit()
{
}
/**
* Initializes the module.
* This method is called at the end of the module constructor.
* Note that at this moment, the module has been configured, the behaviors
* have been attached and the application components have been registered.
* @see preinit
*/
protected function init()
{
}
}
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