Echo document

package com.ack.xml.dom;

import com.ack.util.XmlUtil;
import org.w3c.dom.Document;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;

public class EchoDocument {

private void print( Document doc ) {
printNode( doc, "" );
}

public void printNode( Node n, String indent ) {
switch( n.getNodeType() ) {
case Node.DOCUMENT_NODE:
NodeList children = n.getChildNodes();
if( children != null ) {
for( int i = 0; i < children.getLength(); i++ ) { printNode( children.item( i ), indent + " " ); } } break; case Node.ELEMENT_NODE: log( indent + getElementStart( n ) ); getElementChildren( n, indent ); log( indent + getElementEnd( n ) ); break; case Node.TEXT_NODE: String text = getTextNode( n ); if( text.length() > 0 ) {
log( indent + " " + text );
}
break;

case Node.PROCESSING_INSTRUCTION_NODE:
log( indent + getProcessingInstructionNode( n ) );
break;

case Node.COMMENT_NODE:
log( indent + getCommentNode( n ) );
break;
}
}

private void log( String msg ) {
System.out.println( "EchoDocument: " + msg );
}


private String getElementStart( Node e ) {
StringBuffer buf = new StringBuffer();
buf.append( "<" + e.getNodeName() ); buf.append( getElementAttributes( e ) ); buf.append( ">" );
return buf.toString();
}

private void getElementChildren( Node e, String indent ) {
NodeList children = e.getChildNodes();
if( children != null ) {
for( int i = 0; i < children.getLength(); i++ ) printNode( children.item( i ), indent + " " ); } } private String getElementEnd( Node e ) { return "";
}

private String getElementAttributes( Node e ) {
StringBuffer buf = new StringBuffer();
NamedNodeMap attributes = e.getAttributes();
for( int i = 0; i < attributes.getLength(); i++ ) { Node n = attributes.item( i ); buf.append( " " ); buf.append( n.getNodeName() ); buf.append( "=" ); buf.append( n.getNodeValue() ); } return buf.toString(); } private String getTextNode( Node t ) { return t.getNodeValue().trim(); } private String getProcessingInstructionNode( Node pi ) { return "";
}

private String getCommentNode( Node c ) {
return "comment: " + c.getNodeValue();
}

public static void main( String[] args )
throws Exception {
// create an input source for target document and parse it
InputSource is = new InputSource( "resources\\personal.xml" );
Document d = XmlUtil.getDocument( is );

new EchoDocument().print( d );
}
}