wallabag/inc/3rdparty/libraries/feedwriter/FeedItem.php

<?php
 /**
 * Univarsel Feed Writer
 * 
 * FeedItem class - Used as feed element in FeedWriter class
 *
 * @package         UnivarselFeedWriter
 * @author          Anis uddin Ahmad <anisniit@gmail.com>
 * @link            http://www.ajaxray.com/projects/rss
 */
 class FeedItem
 {
    private $elements = array();    //Collection of feed elements
    private $version;
    
    /**
    * Constructor 
    * 
    * @param    contant     (RSS1/RSS2/ATOM) RSS2 is default. 
    */ 
    function __construct($version = RSS2)
    {    
        $this->version = $version;
    }

    /**
    * Set element (overwrites existing elements with $elementName)
    * 
    * @access   public
    * @param    srting  The tag name of an element
    * @param    srting  The content of tag
    * @param    array   Attributes(if any) in 'attrName' => 'attrValue' format
    * @return   void
    */
    public function setElement($elementName, $content, $attributes = null)
    {
        if (isset($this->elements[$elementName])) {
            unset($this->elements[$elementName]);
        }
        $this->addElement($elementName, $content, $attributes);
    }    
    
    /**
    * Add an element to elements array
    * 
    * @access   public
    * @param    srting  The tag name of an element
    * @param    srting  The content of tag
    * @param    array   Attributes(if any) in 'attrName' => 'attrValue' format
    * @return   void
    */
    public function addElement($elementName, $content, $attributes = null)
    {
        $i = 0;
        if (isset($this->elements[$elementName])) {
            $i = count($this->elements[$elementName]);
        } else {
            $this->elements[$elementName] = array();
        }
        $this->elements[$elementName][$i]['name']       = $elementName;
        $this->elements[$elementName][$i]['content']    = $content;
        $this->elements[$elementName][$i]['attributes'] = $attributes;
    }
    
    /**
    * Set multiple feed elements from an array. 
    * Elements which have attributes cannot be added by this method
    * 
    * @access   public
    * @param    array   array of elements in 'tagName' => 'tagContent' format.
    * @return   void
    */
    public function addElementArray($elementArray)
    {
        if(! is_array($elementArray)) return;
        foreach ($elementArray as $elementName => $content) 
        {
            $this->addElement($elementName, $content);
        }
    }
    
    /**
    * Return the collection of elements in this feed item
    * 
    * @access   public
    * @return   array
    */
    public function getElements()
    {
        return $this->elements;
    }
    
    // Wrapper functions ------------------------------------------------------
    
    /**
    * Set the 'dscription' element of feed item
    * 
    * @access   public
    * @param    string  The content of 'description' element
    * @return   void
    */
    public function setDescription($description) 
    {
        $this->setElement('description', $description);
    }
    
    /**
    * @desc     Set the 'title' element of feed item
    * @access   public
    * @param    string  The content of 'title' element
    * @return   void
    */
    public function setTitle($title) 
    {
        $this->setElement('title', $title);      
    }
    
    /**
    * Set the 'date' element of feed item
    * 
    * @access   public
    * @param    string  The content of 'date' element
    * @return   void
    */
    public function setDate($date) 
    {
        if(! is_numeric($date))
        {
            $date = strtotime($date);
        }
      
        if($this->version == RSS2) 
        {
            $tag    = 'pubDate';
            $value  = date(DATE_RSS, $date);
        }
        else                                
        {
            $tag    = 'dc:date';
            $value  = date("Y-m-d", $date);
        }
        
        $this->setElement($tag, $value);    
    }
    
    /**
    * Set the 'link' element of feed item
    * 
    * @access   public
    * @param    string  The content of 'link' element
    * @return   void
    */
    public function setLink($link) 
    {
        if($this->version == RSS2 || $this->version == RSS1)
        {
            $this->setElement('link', $link);
            $this->setElement('guid', $link);
        }
        else
        {
            $this->setElement('link','',array('href'=>$link));
            $this->setElement('id', FeedWriter::uuid($link,'urn:uuid:'));
        } 
        
    }

    /**
    * Set the 'source' element of feed item
    * 
    * @access   public
    * @param    string  The content of 'source' element
    * @return   void
    */
    public function setSource($link) 
    {
        $this->setElement('source', $link);
    }
    
    /**
    * Set the 'encloser' element of feed item
    * For RSS 2.0 only
    * 
    * @access   public
    * @param    string  The url attribute of encloser tag
    * @param    string  The length attribute of encloser tag
    * @param    string  The type attribute of encloser tag
    * @return   void
    */
    public function setEncloser($url, $length, $type)
    {
        $attributes = array('url'=>$url, 'length'=>$length, 'type'=>$type);
        $this->setElement('enclosure','',$attributes);
    }
    
 } // end of class FeedItem
?>