<?php
/**
+ * XBELCreator is a FeedCreator that implements the XBEL specification,
+ * as in http://pyxml.sourceforge.net/topics/xbel/docs/html/xbel.html
+ *
+ * @since Viscacha 1.0
+ * @author Kimmo Suominen <hide@address.com>
+ */
class XBEL extends FeedCreator {

	function createFeed() {
		$feed = "<?xml version=\"1.0\" encoding=\"{$this->encoding}\"?>\n";
		$feed.= "<!DOCTYPE xbel PUBLIC\n";
		$feed.= '	"+//IDN python.org//DTD XML Bookmark Exchange Language 1.0//EN//XML"' . "\n";
		$feed.= '	"http://www.python.org/topics/xml/dtds/xbel-1.0.dtd">' . "\n";
		$feed.= $this->_createGeneratorComment();
		$feed.= '<xbel version="1.0"';
		$now = new FeedDate();
		$feed.= ' added="'.$this->htmlspecialchars($now->iso8601()).'"';
		if ($this->language!="") {
			$feed.= " xml:lang=\"".$this->language."\"";
		}
		$feed.= ">\n";
		if ($this->title != "") {
			$feed.= "<folder>\n";
			$feed.= "	<title>".$this->htmlspecialchars($this->title)."</title>\n";
			$feed.= "	<desc>".$this->htmlspecialchars($this->description)."</desc>\n";
		}
		$feed.= $this->_createAdditionalElements($this->additionalElements, "		");
		$ocat = '';
		for ($i=0;$i<count($this->items);$i++) {
			if ($this->items[$i]->category != $ocat) {
				if ($ocat != '') {
					$feed.= "	</folder>\n";
				}
				$ocat = $this->items[$i]->category;
				if ($ocat != '') {
					$feed.= "	<folder>\n";
					$feed.= "		<title>".$this->htmlspecialchars($ocat)."</title>\n";
				}
			}
			if (preg_match('/^\-+$/', $this->items[$i]->title)) {
				$feed.= "	<separator/>\n";
				continue;
			}
			$feed.= '		<bookmark';
			$feed.= ' href="'.$this->htmlspecialchars($this->items[$i]->link).'"';
			if ($this->items[$i]->date == "") {
				$itemDate = $now;
			} else {
				$itemDate = new FeedDate($this->items[$i]->date);
			}
			$feed.= ' added="'.$this->htmlspecialchars($itemDate->iso8601()).'"';
			$feed.= ">\n";
			$feed.= "			<title>".$this->htmlspecialchars($this->items[$i]->title)."</title>\n";
			if ($this->items[$i]->description!="") {
				$feed.= "			<desc>".$this->htmlspecialchars($this->items[$i]->description)."</desc>\n";
			}
			$feed.= $this->_createAdditionalElements($this->items[$i]->additionalElements, "		");
			$feed.= "		</bookmark>\n";
		}
		if ($ocat != '') {
			$feed.= "	</folder>\n";
		}
		if ($this->title != "") {
			$feed.= "</folder>\n";
		}
		$feed.= "</xbel>\n";
		return $feed;
	}
}
?>