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 <?php
 
 /**
  * Zend Framework
  *
  * LICENSE
  *
  * This source file is subject to the new BSD license that is bundled
  * with this package in the file LICENSE.txt.
  * It is also available through the world-wide-web at this URL:
  * http://framework.zend.com/license/new-bsd
  * If you did not receive a copy of the license and are unable to
  * obtain it through the world-wide-web, please send an email
  * to license@zend.com so we can send you a copy immediately.
  *
  * @category   Zend
  * @package    Zend_Gdata
  * @subpackage Gdata
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 /**
  * Zend_Gdata_App
  */
 // require_once 'Zend/Gdata/App.php';
 
 /**
  * Provides functionality to interact with Google data APIs
  * Subclasses exist to implement service-specific features
  *
  * As the Google data API protocol is based upon the Atom Publishing Protocol
  * (APP), Gdata functionality extends the appropriate Zend_Gdata_App classes
  *
  * @link http://code.google.com/apis/gdata/overview.html
  *
  * @category   Zend
  * @package    Zend_Gdata
  * @subpackage Gdata
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Gdata extends Zend_Gdata_App
 {
 
     /**
      * Service name for use with Google's authentication mechanisms
      *
      * @var string
      */
     const AUTH_SERVICE_NAME = 'xapi';
 
     /**
      * Default URI to which to POST.
      *
      * @var string
      */
     protected $_defaultPostUri = null;
 
     /**
      * Packages to search for classes when using magic __call method, in order.
      *
      * @var array
      */
     protected $_registeredPackages = array(
             'Zend_Gdata_Kind',
             'Zend_Gdata_Extension',
             'Zend_Gdata',
             'Zend_Gdata_App_Extension',
             'Zend_Gdata_App');
 
     /**
      * Namespaces used for Gdata data
      *
      * @var array
      */
     public static $namespaces = array(
         array('gd', 'http://schemas.google.com/g/2005', 1, 0),
         array('openSearch', 'http://a9.com/-/spec/opensearchrss/1.0/', 1, 0),
         array('openSearch', 'http://a9.com/-/spec/opensearch/1.1/', 2, 0),
         array('rss', 'http://blogs.law.harvard.edu/tech/rss', 1, 0)
     );
 
     /**
      * Client object used to communicate
      *
      * @var Zend_Gdata_HttpClient
      */
     protected $_httpClient;
 
     /**
      * Client object used to communicate in static context
      *
      * @var Zend_Gdata_HttpClient
      */
     protected static $_staticHttpClient = null;
 
     /**
      * Create Gdata object
      *
      * @param Zend_Http_Client $client
      * @param string $applicationId The identity of the app in the form of
      *          Company-AppName-Version
      */
     public function __construct($client = null, $applicationId = 'MyCompany-MyApp-1.0')
     {
         parent::__construct($client, $applicationId);
     }
 
     /**
      * Imports a feed located at $uri.
      *
      * @param  string $uri
      * @param  Zend_Http_Client $client The client used for communication
      * @param  string $className The class which is used as the return type
      * @throws Zend_Gdata_App_Exception
      * @return string|Zend_Gdata_App_Feed Returns string only if the object
      *                                    mapping has been disabled explicitly
      *                                    by passing false to the
      *                                    useObjectMapping() function.
      */
     public static function import($uri, $client = null,
         $className='Zend_Gdata_Feed', $useObjectMapping = true)
     {
         $app = new Zend_Gdata($client);
         $requestData = $app->decodeRequest('GET', $uri);
         $response = $app->performHttpRequest($requestData['method'], $requestData['url']);
 
         $feedContent = $response->getBody();
 
         $feed = self::importString($feedContent, $className);
         if ($client != null) {
             $feed->setHttpClient($client);
         }
         return $feed;
     }
 
     /**
      * Retrieve feed as string or object
      *
      * @param mixed $location The location as string or Zend_Gdata_Query
      * @param string $className The class type to use for returning the feed
      * @throws Zend_Gdata_App_InvalidArgumentException
      * @return string|Zend_Gdata_App_Feed Returns string only if the object
      *                                    mapping has been disabled explicitly
      *                                    by passing false to the
      *                                    useObjectMapping() function.
      */
     public function getFeed($location, $className='Zend_Gdata_Feed')
     {
         if (is_string($location)) {
             $uri = $location;
         } elseif ($location instanceof Zend_Gdata_Query) {
             $uri = $location->getQueryUrl();
         } else {
             // require_once 'Zend/Gdata/App/InvalidArgumentException.php';
             throw new Zend_Gdata_App_InvalidArgumentException(
                     'You must specify the location as either a string URI ' .
                     'or a child of Zend_Gdata_Query');
         }
         return parent::getFeed($uri, $className);
     }
 
     /**
      * Retrieve entry as string or object
      *
      * @param mixed $location The location as string or Zend_Gdata_Query
      * @throws Zend_Gdata_App_InvalidArgumentException
      * @return string|Zend_Gdata_App_Entry Returns string only if the object
      *                                     mapping has been disabled explicitly
      *                                     by passing false to the
      *                                     useObjectMapping() function.
      */
     public function getEntry($location, $className='Zend_Gdata_Entry')
     {
         if (is_string($location)) {
             $uri = $location;
         } elseif ($location instanceof Zend_Gdata_Query) {
             $uri = $location->getQueryUrl();
         } else {
             // require_once 'Zend/Gdata/App/InvalidArgumentException.php';
             throw new Zend_Gdata_App_InvalidArgumentException(
                     'You must specify the location as either a string URI ' .
                     'or a child of Zend_Gdata_Query');
         }
         return parent::getEntry($uri, $className);
     }
 
     /**
      * Performs a HTTP request using the specified method.
      *
      * Overrides the definition in the parent (Zend_Gdata_App)
      * and uses the Zend_Gdata_HttpClient functionality
      * to filter the HTTP requests and responses.
      *
      * @param string $method The HTTP method for the request -
      *                       'GET', 'POST', 'PUT', 'DELETE'
      * @param string $url The URL to which this request is being performed,
      *                    or null if found in $data
      * @param array $headers An associative array of HTTP headers
      *                       for this request
      * @param string $body The body of the HTTP request
      * @param string $contentType The value for the content type of the
      *                            request body
      * @param int $remainingRedirects Number of redirects to follow
      *                                if requests results in one
      * @return Zend_Http_Response The response object
      */
     public function performHttpRequest($method, $url, $headers = array(), $body = null, $contentType = null, $remainingRedirects = null)
     {
         if ($this->_httpClient instanceof Zend_Gdata_HttpClient) {
             $filterResult = $this->_httpClient->filterHttpRequest($method, $url, $headers, $body, $contentType);
             $method = $filterResult['method'];
             $url = $filterResult['url'];
             $body = $filterResult['body'];
             $headers = $filterResult['headers'];
             $contentType = $filterResult['contentType'];
             return $this->_httpClient->filterHttpResponse(parent::performHttpRequest($method, $url, $headers, $body, $contentType, $remainingRedirects));
         } else {
             return parent::performHttpRequest($method, $url, $headers, $body, $contentType, $remainingRedirects);
         }
     }
 
     /**
      * Determines whether service object is authenticated.
      *
      * @return boolean True if service object is authenticated, false otherwise.
      */
     public function isAuthenticated()
     {
         $client = parent::getHttpClient();
         if ($client->getClientLoginToken() ||
             $client->getAuthSubToken()) {
                 return true;
         }
 
         return false;
     }
 
 }