1 <?php

     2 /**

     3  * Zend Framework

     4  *

     5  * LICENSE

     6  *

     7  * This source file is subject to the new BSD license that is bundled

     8  * with this package in the file LICENSE.txt.

     9  * It is also available through the world-wide-web at this URL:

    10  * http://framework.zend.com/license/new-bsd

    11  * If you did not receive a copy of the license and are unable to

    12  * obtain it through the world-wide-web, please send an email

    13  * to license@zend.com so we can send you a copy immediately.

    14  *

    15  * @category   Zend

    16  * @package    Zend_Service_Amazon

    17  * @subpackage Ec2

    18  * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

    19  * @license    http://framework.zend.com/license/new-bsd     New BSD License

    20  * @version    $Id: Response.php 20096 2010-01-06 02:05:09Z bkarwin $

    21  */

    22 

    23 /**

    24  * @see Zend_Http_Response

    25  */

    26 require_once 'Zend/Http/Response.php';

    27 

    28 /**

    29  * @category   Zend

    30  * @package    Zend_Service_Amazon

    31  * @subpackage Ec2

    32  * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

    33  * @license    http://framework.zend.com/license/new-bsd     New BSD License

    34  */

    35 class Zend_Service_Amazon_Ec2_Response {

    36     /**

    37      * XML namespace used for EC2 responses.

    38      */

    39     protected $_xmlNamespace = 'http://ec2.amazonaws.com/doc/2009-04-04/';

    40 

    41     /**

    42      * The original HTTP response

    43      *

    44      * This contains the response body and headers.

    45      *

    46      * @var Zend_Http_Response

    47      */

    48     private $_httpResponse = null;

    49 

    50     /**

    51      * The response document object

    52      *

    53      * @var DOMDocument

    54      */

    55     private $_document = null;

    56 

    57     /**

    58      * The response XPath

    59      *

    60      * @var DOMXPath

    61      */

    62     private $_xpath = null;

    63 

    64     /**

    65      * Last error code

    66      *

    67      * @var integer

    68      */

    69     private $_errorCode = 0;

    70 

    71     /**

    72      * Last error message

    73      *

    74      * @var string

    75      */

    76     private $_errorMessage = '';

    77 

    78     /**

    79      * Creates a new high-level EC2 response object

    80      *

    81      * @param Zend_Http_Response $httpResponse the HTTP response.

    82      */

    83     public function __construct(Zend_Http_Response $httpResponse)

    84     {

    85         $this->_httpResponse = $httpResponse;

    86     }

    87 

    88     /**

    89      * Gets the XPath object for this response

    90      *

    91      * @return DOMXPath the XPath object for response.

    92      */

    93     public function getXPath()

    94     {

    95         if ($this->_xpath === null) {

    96             $document = $this->getDocument();

    97             if ($document === false) {

    98                 $this->_xpath = false;

    99             } else {

   100                 $this->_xpath = new DOMXPath($document);

   101                 $this->_xpath->registerNamespace('ec2',

   102                     $this->getNamespace());

   103             }

   104         }

   105 

   106         return $this->_xpath;

   107     }

   108 

   109     /**

   110      * Gets the document object for this response

   111      *

   112      * @return DOMDocument the DOM Document for this response.

   113      */

   114     public function getDocument()

   115     {

   116         try {

   117             $body = $this->_httpResponse->getBody();

   118         } catch (Zend_Http_Exception $e) {

   119             $body = false;

   120         }

   121 

   122         if ($this->_document === null) {

   123             if ($body !== false) {

   124                 // turn off libxml error handling

   125                 $errors = libxml_use_internal_errors();

   126 

   127                 $this->_document = new DOMDocument();

   128                 if (!$this->_document->loadXML($body)) {

   129                     $this->_document = false;

   130                 }

   131 

   132                 // reset libxml error handling

   133                 libxml_clear_errors();

   134                 libxml_use_internal_errors($errors);

   135             } else {

   136                 $this->_document = false;

   137             }

   138         }

   139 

   140         return $this->_document;

   141     }

   142 

   143     /**

   144      * Return the current set XML Namespace.

   145      *

   146      * @return string

   147      */

   148     public function getNamespace()

   149     {

   150         return $this->_xmlNamespace;

   151     }

   152 

   153     /**

   154      * Set a new XML Namespace

   155      *

   156      * @param string $namespace

   157      */

   158     public function setNamespace($namespace)

   159     {

   160         $this->_xmlNamespace = $namespace;

   161     }

   162 

   163 }