common/blog.class.php

<?php
/**
 * THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS ECLIPSE PUBLIC LICENSE (http://www.eclipse.org/legal/epl-v10.html). 
 * ANY USE, REPRODUCTION OR DISTRIBUTION OF THE PROGRAM CONSTITUTES RECIPIENT'S ACCEPTANCE OF THIS AGREEMENT.
 * 
 */

 /**
  * 
  */
/*
 * Created on 15/12/2005
 *
 * Eduardo A. Romero Gomez
 * eromero@openmex.com
 * http://www.openmex.com
 */


require_once($_SERVER['DOCUMENT_ROOT'] . "/projects/common/xmlwrapper.class.php");

  /**
  * The Blog object models a RSS v2.0 or ATOM v1.0 <b>blog</b> 
  * 
  * see http://www.tbray.org/atom/RSS-and-Atom#specs for more information
  * 
  * As any blog out there it has a <b>name</b> and an <b>url</b>, description, date, image and copyrigth are also avaliable
  * 
  * @license http://www.eclipse.org/legal/epl-v10.html Eclipse Public License - v 1.0
  * @author Eduardo A. Romero
  */
class Blog {

	var $name="";
	var $url="";
	
	/* xml feed */
	var $xml;
	var $xmlsource;
	var $serialized = 0;
	var $xmlArray = array();
	var $errors = array();
	
	var $description = "";
	var $copyright = "";
	var $image = "";
	var $thedate = "";

/* type of feed 1 == RSS 2 == ATOM */
	var $feedType = 0; 
	
	/**
	 * Constructor,
	 * 
	 * Creates a new Blog object, if no name is given the URL will be used
	 * as the name.
	 * 
	 * @param string $name The name of the Blog, defaults to the URL
	 * @param string $url The URL of the Blog, defaults to the empty string
	 * 
	 * @return Blog The brand new blog
	 * 
	 */
    function Blog($url= "",$name="") {
    	$this->url = $url;
    	if(strlen($name) == 0)
    		$name = $url;
    	$this->name = $name;
    }
    
 	/**
 	 * Sets the name of the Blog
 	 * 
 	 * @access public
 	 * @param string  The <i>name</i> of the blog
 	 */
    function setName($name)
 	{
 		$this->name = $name;	
 	}
 	
 	/**
 	 * Sets the URL where the Blog can be found
 	 * 
 	 * @access public
 	 * @param string  The <i>url</i> of the blog
 	 */
 	function setURL($url)
 	{
 		$this->url = $url;	
 	}	 	

   	/**
 	 * Returns the name of the Blog
 	 * 
 	 * @access public
 	 * @return string The name of the blog
 	 */	
	function getName()
 	{
 		if($this->serialized == 0)
			$this->parseToArray();
 		return $this->name;	
 	}
 	
     /**
 	 * Returns the URL where the Blog can be found
 	 * 
 	 * @access public
 	 * @return string The URL of the Blog
 	 */		
 	function getURL()
 	{
 		return $this->url;	
 	}
 	
     /**
 	 * Returns the XML feed of the Blog
 	 * 
 	 * @access public
 	 * @return string The URL XML Feed of the Blog
 	 */		
 	function getXMLFeed()
 	{
 		return $this->xmlsource;	
 	} 	
 	
   	/**
 	 * Returns the Date of the Blog
 	 * 
 	 * @access public
 	 * @return string The Date of the blog
 	 */	
	function getDate()
 	{
 		if($this->serialized == 0)
			$this->parseToArray();
 		return $this->thedate;	
 	}
 	   	
 	 /**
 	 * Returns the Description of the Blog
 	 * 
 	 * @access public
 	 * @return string The Description of the blog
 	 */	
	function getDescription()
 	{
 		if($this->serialized == 0)
			$this->parseToArray();
 		return $this->description;	
 	}

   	/**
 	 * Returns the Copyright of the Blog
 	 * 
 	 * @access public
 	 * @return string The copyright notice of the blog
 	 */	
	function getCopyright()
 	{
 		if($this->serialized == 0)
			$this->parseToArray();
 		return $this->copyright;	
 	}
 	
   	/**
 	 * Returns the URL of the Image of the Blog
 	 * 
 	 * @access public
 	 * @return string The URL of the image of the blog
 	 */	
	function getImage()
 	{
 		if($this->serialized == 0)
			$this->parseToArray();
 		return $this->image;	
 	}

	/**
	 * Retrieves the XML from the XML Feed given on the constructor
	 * 
	 * @access private
	 */
 	function getXML()
	{
		$source = $this->url;
		if(isset($_REQUEST['debug']))		
			echo "xmlsource $source <br>";
		$xml = "";
		if(strlen($source))
		{
				$xml = @file($source);
				if(is_array($xml) && count($xml) > 0)
					$xml = implode('',$xml);
				$this->xmlsource = $source;				
		}

		if(strlen($xml) <= 0) 
		{
			/* no xml found */						
		} else {
		   $this->xml = $xml;
		   $this->xml = preg_replace( "/\<\!--.*?--\>/s", "", $this->xml );
		}
	}
 	
 	/**
 	 * Parses the XML Feed given on the constructor
 	 * 
 	 * @access private
 	 */
 	function parseToArray()    
    {    	    
    	$this->getXML();
    		    	
    	if($this->serialized == 0)
    	{
	    	$this->serialized = 1;    	    	
	    	$this->xmlArray= XML_unserialize($this->xml);
    	}
    	else
    		$this->xmlArray= array();
    		
		if(count($this->xmlArray)>0)
		{
			// El XML esta en el arreglo. a procesar se ha dicho!
			
			// es RSS o ATOM?			
			if(isset($this->xmlArray['rss']))
				$this->feedType = 1;
			elseif(isset($this->xmlArray['feed']))
				$this->feedType = 2;
			elseif(isset($this->xmlArray['rdf:RDF']))
			{
				$this->feedType = 1;
				$this->xmlArray['rss'] =	$this->xmlArray['rdf:RDF'];
			}
				
			if($this->feedType == 1)
			{					
				/* RSS Channel information */
				if(isset($this->xmlArray['rss']['channel']))
				{
						if(isset($this->xmlArray['rss']['channel']['title']))
							$this->name =  $this->xmlArray['rss']['channel']['title'];
							
						if(isset($this->xmlArray['rss']['channel']['description']))
							$this->description =  $this->xmlArray['rss']['channel']['description'];
							
						if(isset($this->xmlArray['rss']['channel']['copyright']))
							$this->copyright =  $this->xmlArray['rss']['channel']['copyright'];
							
						if(isset($this->xmlArray['rss']['channel']['image']['url']))
							$this->image =  $this->xmlArray['rss']['channel']['image']['url'];
							
						if(isset($this->xmlArray['rss']['channel']['lastBuildDate']))
							$this->thedate =  $this->xmlArray['rss']['channel']['lastBuildDate'];
						if(isset($this->xmlArray['rss']['channel']['link']))
							$this->url =  $this->xmlArray['rss']['channel']['link'];							
				}
				else
					$this->errors[] = "No channel found";					
					
														
			}
			elseif($this->feedType == 2)
			{
				/* Atom feed information */
						if(isset($this->xmlArray['feed']['title']))
							$this->name =  $this->xmlArray['feed']['title'];
							
						if(isset($this->xmlArray['feed']['subtitle']))
							$this->desription =  $this->xmlArray['feed']['subtitle'];
							
						if(isset($this->xmlArray['feed']['rights']))
							$this->copyright =  $this->xmlArray['feed']['rights'];
							
						if(isset($this->xmlArray['feed']['logo']))
							$this->image =  $this->xmlArray['feed']['logo'];
							
						if(isset($this->xmlArray['feed']['updated']))
							$this->thedate =  $this->xmlArray['feed']['updated'];		
			}
			else
			{
				//$error = "No Project Found";
				$this->serialized = -2;
			}
		}
		else
		{
			//$error = "No se pudo Serializar el XML";
			$this->errors[] = "Couldn't parse XML";
			$this->serialized = -1;
		}	
    }
    
}
?>