package org.kuali.ole.docstore.common;
   
   import org.apache.commons.lang3.ArrayUtils;
   import org.apache.commons.lang3.StringUtils;
   import org.dom4j.DocumentHelper;
   import org.dom4j.io.OutputFormat;
   import org.dom4j.io.XMLWriter;
   
   import java.io.StringWriter;
  
  /**
   * Created by pvsubrah on 5/7/15.
   */
  public class XMLFormatter {
      public static String prettyPrint(final String xml) {
          if (StringUtils.isBlank(xml)) {
              throw new RuntimeException("xml was null or blank in prettyPrint()");
          }
  
          final StringWriter sw;
  
          try {
              final OutputFormat format = OutputFormat.createPrettyPrint();
              final org.dom4j.Document document = DocumentHelper.parseText(xml);
              sw = new StringWriter();
              final XMLWriter writer = new XMLWriter(sw, format);
              writer.write(document);
          } catch (Exception e) {
              throw new RuntimeException("Error pretty printing xml:\n" + xml, e);
          }
          String[] xmlArray = StringUtils.split(sw.toString(), '\n');
          Object[] xmlContent = ArrayUtils.subarray(xmlArray, 1, xmlArray.length);
          StringBuilder xmlStr = new StringBuilder();
          for (Object object : xmlContent) {
              xmlStr.append(object.toString());
              xmlStr.append('\n');
          }
          return xmlStr.toString();
      }
  }