Remove empty tags in the Xml string

   
 
#region License and Copyright
/*
 * Dotnet Commons Xml
 *
 *
 * This library is free software; you can redistribute it and/or modify it 
 * under the terms of the GNU Lesser General Public License as published by 
 * the Free Software Foundation; either version 2.1 of the License, or 
 * (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but 
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License 
 * for more details. 
 *
 * You should have received a copy of the GNU Lesser General Public License 
 * along with this library; if not, write to the 
 * Free Software Foundation, Inc., 
 * 59 Temple Place, 
 * Suite 330, 
 * Boston, 
 * MA 02111-1307 
 * USA 
 * 
 */
#endregion

using System;
using System.Collections;
using System.Collections.Specialized;
using System.Diagnostics;
using System.IO;
using System.Reflection;
using System.Text;
using System.Text.RegularExpressions;
using System.Xml;
using System.Xml.Xsl;
using System.Xml.Serialization;

//using Dotnet.Commons.Reflection;

namespace Dotnet.Commons.Xml
{
  
  ///  
  /// <summary>
  /// This utility class contains wrapper functions that help to ease the handling and 
    /// manipulation of Xml documents, such as adding an element, adding an attribute
    /// to an element, copying and cloning of nodes, etc.
  ///
  /// </summary>
  /// 
    
  public abstract class XmlUtils
  {
    /// -----------------------------------------------------------
    /// <summary>
    /// Remove empty tags in the Xml string
    /// </summary>
    /// <param name="sXML"></param>
    /// <returns></returns>
    /// <remarks>Thanks to http://dotnet.editme.com/codeCleanXML</remarks>
    /// -----------------------------------------------------------
    public static string RemoveEmptyTags(string sXML)
    {
      System.Text.StringBuilder sb = new StringBuilder();
               
      sb.Append("<?xml version="1.0" encoding="UTF-8"?>");
      sb.Append("<xsl:stylesheet ");
      sb.Append("     version="1.0" ");
      sb.Append("     xmlns:msxsl="urn:schemas-microsoft-com:xslt"");
      sb.Append("     xmlns:xsl="http://www.w3.org/1999/XSL/Transform">");
      sb.Append("     <xsl:output method="xml" version="1.0" encoding="UTF-8"/>");
      sb.Append("   <!-- Whenever you match any node or any attribute -->");
      sb.Append("   <xsl:template match="node()|@*">");
      sb.Append("      <!-- Copy the current node -->");
      sb.Append("     <xsl:if test="normalize-space(.) != &#039;&#039; or normalize-space(./@*) != &#039;&#039; ">");
      sb.Append("          <xsl:copy>");
      sb.Append("              <!-- Including any attributes it has and any child nodes -->");
      sb.Append("               <xsl:apply-templates select="@*|node()"/>");
      sb.Append("          </xsl:copy>");
      sb.Append("     </xsl:if>");
      sb.Append("   </xsl:template>");
      sb.Append("</xsl:stylesheet>");
      return transXMLStringThroughXSLTString(sXML, sb.ToString());
    }

   


    private static string transXMLStringThroughXSLTString(string sXML, string sXSLT)
    {
            //This is the logic of the application.
            XslCompiledTransform objTransform = new XslCompiledTransform();

            StringReader xmlStream = new StringReader(sXML);
            XmlReader xmlReader = new XmlTextReader(xmlStream);


            StringReader stream = new StringReader(sXSLT);
            XmlReader xmlReaderXslt = new XmlTextReader(stream);

            objTransform.Load(xmlReaderXslt, null, null);

            StringWriter objStream = new StringWriter();
            objTransform.Transform(xmlReader, null, objStream);

            return objStream.ToString().Replace(@"encoding=""utf-16""?>", @"encoding=""utf-8""?>");
    }
   }
}