Alphabetical sorting of the XmlNodes
#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
{
// #################################################################### //
// These code is derived from Mainsoft.com //
// http://www.koders.com/csharp/fid439BB5BEF93D1AEFAF0B9206236AB0ECE49BC229.aspx
// #################################################################### //
/// -----------------------------------------------------------
/// <summary>
/// Alphabetical sorting of the XmlNodes
/// and their attributes in the <see cref="System.Xml.XmlDocument"/>.
/// </summary>
/// <param name="document"><see cref="System.Xml.XmlDocument"/> to be sorted</param>
/// -----------------------------------------------------------
public static void SortXml(XmlDocument document)
{
SortXml(document.DocumentElement);
}
/// -----------------------------------------------------------
/// <summary>
/// Inplace pre-order recursive alphabetical sorting of the XmlNodes child
/// elements and <see cref="System.Xml.XmlAttributeCollection" />.
/// </summary>
/// <param name="rootNode">The root to be sorted.</param>
/// -----------------------------------------------------------
public static void SortXml(XmlNode rootNode)
{
SortAttributes(rootNode.Attributes);
SortElements(rootNode);
foreach (XmlNode childNode in rootNode.ChildNodes)
{
SortXml(childNode);
}
}
/// -----------------------------------------------------------
/// <summary>
/// Sorts an attributes collection alphabetically.
/// It uses the bubble sort algorithm.
/// </summary>
/// <param name="attribCol">The attribute collection to be sorted.</param>
/// -----------------------------------------------------------
public static void SortAttributes(XmlAttributeCollection attribCol)
{
if (attribCol == null)
return;
bool hasChanged = true;
while (hasChanged)
{
hasChanged = false;
for (int i = 1; i < attribCol.Count; i++)
{
if (String.Compare(attribCol[i].Name, attribCol[i-1].Name, true) < 0)
{
//Replace
attribCol.InsertBefore(attribCol[i], attribCol[i - 1]);
hasChanged = true;
}
}
}
}
/// -----------------------------------------------------------
/// <summary>
/// Sorts a <see cref="XmlNodeList" /> alphabetically, by the names of the elements.
/// It uses the bubble sort algorithm.
/// </summary>
/// <param name="node">The node in which its childNodes are to be sorted.</param>
/// -----------------------------------------------------------
public static void SortElements(XmlNode node)
{
bool changed = true;
while (changed)
{
changed = false;
for (int i = 1; i < node.ChildNodes.Count; i++)
{
if (String.Compare(node.ChildNodes[i].Name, node.ChildNodes[i-1].Name, true) < 0)
{
//Replace:
node.InsertBefore(node.ChildNodes[i], node.ChildNodes[i-1]);
changed = true;
}
}
}
}
}
}
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