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<?php # $Id: $

/* RSS reader plugin by Auz (www.auzsoft.net). Reads RSS. Based on rss-reader by Kailash Nadh */

class serendipity_plugin_rssreader extends serendipity_plugin {
    function introspect(&$propbag)
    {
        $propbag->add('name',          'RSS Reader Plugin');
        $propbag->add('description',   'Reads RSS Feed');
        $propbag->add('configuration', array(
										'title',
                                        'url',
                                        'items',
										'chop'
                                       )
        );
    }

    function introspect_config_item($name, &$propbag)
    {
        switch($name) {
			case 'title':
                $propbag->add('type',        'string');
                $propbag->add('name',        'Feed Title');
                $propbag->add('description', 'Title of the RSS feed (leave blank to use feed\'s)');
                break;

			case 'url':
                $propbag->add('type',        'string');
                $propbag->add('name',        'URL');
                $propbag->add('description', 'URL of the RSS feed');
                break;

			case 'chop':
                $propbag->add('type',        'string');
                $propbag->add('name',        'Truncate');
                $propbag->add('description', 'Max length of headlines');
                break;

            case 'items':
				$select["1"] = "One";
				$select["2"] = "Two";
				$select["3"] = "Three";
				$select["4"] = "Four";
				$select["5"] = "Five";
				$select["10"] = "Ten";
                $propbag->add('type',        'select');
                $propbag->add('name',        'Display');
                $propbag->add('description', 'No. of items to display');
				$propbag->add('select_values', $select);
                break;
           
            default:
                return false;
        }
        return true;
    }

    function generate_content(&$title, $output = true)
    {
        $title = $this->get_config('title');
		$url   = $this->get_config('url');
		$disp  = $this->get_config('items');
		$chop  = $this->get_config('chop');
        //echo "Viewing $disp items from $url";
		$data = @fread( fopen("$url","r"), 10000 );
		$myar = $this->getXmlData($data);
		
		if (!$title) {
			$title = $myar["TITLE"][0];
		}

		echo "<div>";
		for ( $i=1; $i<=$disp; $i++ ) {
			$head = $myar["TITLE"][$i];
			$full = $head;
			$link = $myar["LINK"][$i];
			if ( $chop ) {
				if ( strlen($head) > $chop ) {
					$head = rtrim(substr( $head, 0, $chop-3 )) . "...";
				}
			}
			echo "<a href=\"$link\" target=\"_blank\" title=\"$full\">$head</a><br>\n";
		}
		echo "</div>";
		//echo "<!--\n ".print_r($myar,TRUE)." \n-->";
    }

	/*##############################################

	RSS parser written for bMachine feed.
	This script can be used to read ANY kind of RSS feeds from anywhere!

	*--------------------------------------------*
	Written by Kailash Nadh,
	http://bnsoft.net , kailash@bnsoft.net

	Author of bMachine, http://boastology.com

	I wrote this script on the 1st day I studied
	XML by running through the documentation at www.php.net ;)
	*--------------------------------------------*

	WARNING!: This script is Heavily commented! :)

	This is how the script works.
	> Reads the XML file
	> Parses it into an array using xml_parse_into_struct()
	> Converts that array into a more sensible, easily usable array
	[ See the structure.txt file to get an idea of the array structure ]
	> Finally, Display the data in anyway you want!

	This script demonstrates the use of simple logic
	to do Complex XML/RSS parsing functions
	This script can be easily developed into a powerful application.

	##############################################*/

	//#####################################################################

	// This is the function. It returns the array of the parsed XML data

	function getXmlData($xml_doc) {

		$n=0; 		 // Counter used for arraying the XML data
		$ar=array(); // The main array for storing parsed xml using xml_parse_into_struct()

		// Parse the XML document
		$parser = xml_parser_create();
		xml_parse_into_struct($parser,$xml_doc,$vals,$index) or die(xml_error_string(xml_get_error_code($parser)));
		xml_parser_free($parser);

		$ttags=array(); // Temporary arry for storing tag names

		// The main part. This is MY CREATION
		// and this piece of code makes this script simple :)
		// This is the "MAGIC LOOP" !! :)

		for($n=0;$n<=count($vals)-1;$n++) {
			if(trim($vals[$n][value])) {
				$ar[$vals[$n][tag]][count($ar[$vals[$n][tag]])]=$vals[$n][value];
				$ttags[$vals[$n][tag]]=$vals[$n][tag];
			}
		}

		// Array for storing all the tag names
		// This array will hold all the Tag names found in the XML document
		// eg: ("TITLE","LINK","AUTHOR","DOMAIN")..
		// Use this if you need it.

		$tags=array();

		// Extract and save the tag names to the array
		foreach($ttags as $tagi) { array_push($tags,$tagi); }

		return $ar;
	}
}

?>