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_Feed_Writer

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

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

    19  * @version    $Id: Feed.php 20325 2010-01-16 00:17:59Z padraic $

    20  */

    21  

    22 /**

    23  * @see Zend_Feed_Writer_Extension_RendererAbstract

    24  */

    25 require_once 'Zend/Feed/Writer/Extension/RendererAbstract.php';

    26  

    27 /**

    28  * @category   Zend

    29  * @package    Zend_Feed_Writer

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

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

    32  */

    33 class Zend_Feed_Writer_Extension_Atom_Renderer_Feed

    34     extends Zend_Feed_Writer_Extension_RendererAbstract

    35 {

    36 

    37     /**

    38      * Set to TRUE if a rendering method actually renders something. This

    39      * is used to prevent premature appending of a XML namespace declaration

    40      * until an element which requires it is actually appended.

    41      *

    42      * @var bool

    43      */

    44     protected $_called = false;

    45     

    46     /**

    47      * Render feed

    48      * 

    49      * @return void

    50      */

    51     public function render()

    52     {

    53         /**

    54          * RSS 2.0 only. Used mainly to include Atom links and

    55          * Pubsubhubbub Hub endpoint URIs under the Atom namespace

    56          */

    57         if (strtolower($this->getType()) == 'atom') {

    58             return;

    59         }

    60         $this->_setFeedLinks($this->_dom, $this->_base);

    61         $this->_setHubs($this->_dom, $this->_base);

    62         if ($this->_called) {

    63             $this->_appendNamespaces();

    64         }

    65     }

    66     

    67     /**

    68      * Append namespaces to root element of feed

    69      * 

    70      * @return void

    71      */

    72     protected function _appendNamespaces()

    73     {

    74         $this->getRootElement()->setAttribute('xmlns:atom',

    75             'http://www.w3.org/2005/Atom');  

    76     }

    77 

    78     /**

    79      * Set feed link elements

    80      * 

    81      * @param  DOMDocument $dom 

    82      * @param  DOMElement $root 

    83      * @return void

    84      */

    85     protected function _setFeedLinks(DOMDocument $dom, DOMElement $root)

    86     {

    87         $flinks = $this->getDataContainer()->getFeedLinks();

    88         if(!$flinks || empty($flinks)) {

    89             return;

    90         }

    91         foreach ($flinks as $type => $href) {

    92             $mime  = 'application/' . strtolower($type) . '+xml';

    93             $flink = $dom->createElement('atom:link');

    94             $root->appendChild($flink);

    95             $flink->setAttribute('rel', 'self');

    96             $flink->setAttribute('type', $mime);

    97             $flink->setAttribute('href', $href);

    98         }

    99         $this->_called = true;

   100     }

   101     

   102     /**

   103      * Set PuSH hubs

   104      * 

   105      * @param  DOMDocument $dom 

   106      * @param  DOMElement $root 

   107      * @return void

   108      */

   109     protected function _setHubs(DOMDocument $dom, DOMElement $root)

   110     {

   111         $hubs = $this->getDataContainer()->getHubs();

   112         if (!$hubs || empty($hubs)) {

   113             return;

   114         }

   115         foreach ($hubs as $hubUrl) {

   116             $hub = $dom->createElement('atom:link');

   117             $hub->setAttribute('rel', 'hub');

   118             $hub->setAttribute('href', $hubUrl);

   119             $root->appendChild($hub);

   120         }

   121         $this->_called = true;

   122     }

   123 }