A Depth-First Recursive Tree Traversal of an XML Tree in ActionScript 3 (AS3)

dirXML.as

/*****
*  Function Name: 
*    dirXml
*  Description:
*    Print out an XML Tree to the console (trace) using a "Depth-First Tree Traversal"
*    http://en.wikipedia.org/wiki/Tree_traversal#Depth-first
******/
//How to Use this function (function source code below):
/* 
    //Example:
    var testXml = 
    <l>
        <a atribute1="sadsdaf" atribute2="asdfsda">
            <b>
                <g>test</g>
            </b>
            <c>asdfdsaf</c>
        </a>
    </l>;
    dirXml(testXml);

    //Output:


<l>

<a atribute1="sadsdaf" atribute2="asdfsda">

<b>

<g>

test

</g>

</b>

<c>

asdfdsaf

</c>

</a>

</l>
*/
public function dirXml(_xml:*, depth:int = 0):void{
	var returnStr:String;
	var xmlList:XMLList = _xml.children();
	if (xmlList.length() > 0) {
		trace( _htmlEscape("<"+_xml.name()+" "+_getAttributesStr(_xml.attributes())+">") );
		for each (var item_xml in xmlList){
			dirXml(item_xml,depth+1);
		}
		trace( _htmlEscape("</"+_xml.name()+">") );
	} else {
		//this is a leaf
		trace( _htmlEscape(_xml));
	}
	return;
}

/*****
*  Return a string of all the attributes in a node
******/
private function _getAttributesStr(atribs:XMLList):String{
    var allAtribs:String = "";
    for each (var item_xml in at ribs){
        allAtribs += item_xml.name()+"=\""+item_xml+"\" ";
    }
    return allAtribs;
}

/*****
*  Format XML string by converting it to XML and then back to a string
******/
private function _htmlEscape(str:String):String
{
    return XML( new XMLNode( XMLNodeType.TEXT_NODE, str ) ).toXMLString();
}  

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