<?php
// includes
require_once 'util/OutputFormatter.php';
/**
 * Enter description here ...
 * @author sysal
 *
 */
class XmlFormatter implements OutputFormatter {

	private $xml;
	private $currentNode;
	private $currentParents;
	
	public function initResult(){
		$this->xml = new DOMDocument;
		$this->currentNode = $this->xml;
		$this->currentParents = array();
	}
	
	public function formatElement($form_ctl, $elem = null, $value = null, $attrs = array()) {
		if ($form_ctl == self::FC_END) {
			$this->currentNode = array_pop($this->currentParents);
			return;
		}

		$elemNode = $this->xml->createElement($elem);

		if (isset($value)) {
			$elemNode->nodeValue = $value;
		}

		foreach ($attrs as $attr_key => $attr_val) {
			$attr = $this->xml->createAttribute($attr_key);
			$attr->nodeValue = $attr_val;
			$elemNode->appendChild($attr);
		}
		
		$this->currentNode->appendChild($elemNode);

		if ($form_ctl == self::FC_BEG) {
			array_push($this->currentParents, $this->currentNode);
			$this->currentNode = $elemNode;
		}
	}
	
	public function finish() {
		;
	}
	
	public function printIt() {
		return $this->xml->saveXML();
	}
}