Source code for comparesitemaps.cs

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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.IO;
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using System.Xml;
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namespace RobvanderWoude
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{
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	internal class CompareSitemaps
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	{
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		static readonly string progver = "1.00";

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		static int Main( string[] args )
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		{
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			int rc = 0;
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			bool quiet = false;
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			bool verbose = false;
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			Stopwatch stopwatch = new Stopwatch( );

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			#region Command Line Parsing
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			if ( args.Length < 2 || args.Length > 3 )

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			{
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				return ShowHelp( );
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			}
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			if ( args.Length == 3 )
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			{
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				if ( args[2].ToUpper( ) == "/V" )
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				{
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					verbose = true;
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				}
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				else if ( args[2].ToUpper( ) == "/Q" )

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				{
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					quiet = true;
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				}
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				else
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				{
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					return ShowHelp( );
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				}
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			}
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			if ( !File.Exists( args[0] ) )
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			{
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				return ShowHelp( "File \"{0}\" not found", args[0] );

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			}
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			if ( !File.Exists( args[1] ) )
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			{
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				return ShowHelp( "File \"{0}\" not found", args[1] );

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			}
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			if ( !QuickTestXML( args[0] ) )
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			{
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				return ShowHelp( "File \"{0}\" is not an XML file", args[0] );

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			}
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			if ( !QuickTestXML( args[1] ) )
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			{
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				return ShowHelp( "File \"{0}\" is not an XML file", args[1] );

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			}
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			#endregion Command Line Parsing
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			if ( verbose )
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			{
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				stopwatch.Start( );
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			}
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			#region Open XML
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			XmlReader xml0r = XmlReader.Create( args[0] );

			XmlDocument xml0d = new XmlDocument( );

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			xml0d.Load( xml0r );
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			XmlReader xml1r= XmlReader.Create( args[1] );

			XmlDocument xml1d = new XmlDocument( );

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			xml1d.Load( xml1r );
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			int nodecount0 = xml0d.DocumentElement.ChildNodes.Count;

			int nodecount1 = xml1d.DocumentElement.ChildNodes.Count;

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			if ( nodecount0 != nodecount1 )
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			{
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				rc = 1;
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				if ( quiet )
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				{
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					return 1;
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				}
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			}
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			#endregion Open XML
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			if ( verbose )
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			{
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				Single filesize0 = new FileInfo( args[0] ).Length / 1048576;

				Single filesize1 = new FileInfo( args[1] ).Length / 1048576;

```
 
```

				Console.WriteLine( "Files to compare:" );

				Console.WriteLine( "=================" );

				Console.WriteLine( "{0,5:0.00} MB    {1,7} nodes    {2}", filesize0, nodecount0, Path.GetFullPath( args[0] ) );

				Console.WriteLine( "{0,5:0.00} MB    {1,7} nodes    {2}", filesize1, nodecount1, Path.GetFullPath( args[1] ) );

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				Console.WriteLine( );
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			}
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			#region Read XML
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			SortedList<string, string> urls = new SortedList<string, string>( );

			SortedList<string, string> urls0 = new SortedList<string, string>( );

			SortedList<string, string> urls1 = new SortedList<string, string>( );

			for ( int i = 0; i < nodecount0; i++ )

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			{
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				string url = xml0d.DocumentElement.ChildNodes[i].ChildNodes[0].InnerText;

				string lastmod = xml0d.DocumentElement.ChildNodes[i].ChildNodes[1].InnerText;

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				urls[url] = url;
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				urls0[url] = lastmod;
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			}
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			for ( int i = 0; i < nodecount1; i++ )

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			{
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				string url = xml1d.DocumentElement.ChildNodes[i].ChildNodes[0].InnerText;

				string lastmod = xml1d.DocumentElement.ChildNodes[i].ChildNodes[1].InnerText;

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				urls[url] = url;
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				urls1[url] = lastmod;
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			}
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			xml0r.Close( );
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			xml1r.Close( );
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			#endregion Read XML
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			Console.ForegroundColor = ConsoleColor.Black;

			Console.BackgroundColor = ConsoleColor.White;

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			int width = Console.WindowWidth;
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			Console.WriteLine( new String( ' ', width - 1 ) );

			Console.WriteLine( "Sitemap0:     Sitemap1:     URL:{0}", new string( ' ', width - 33 ) );

			Console.WriteLine( new String( ' ', width - 1 ) );

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			Console.ResetColor( );
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			Console.WriteLine( );
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			ConsoleColor defcol = Console.ForegroundColor;

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			ConsoleColor lm0col = defcol;
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			ConsoleColor lm1col = defcol;
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			ConsoleColor urlcol = defcol;
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			for ( int i = 0; i < urls.Keys.Count; i++ )

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			{
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				string url = urls.Keys[i];
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				string lastmod0 = string.Empty;
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				string lastmod1 = string.Empty;
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				if ( urls0.ContainsKey( url ) )
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				{
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					lastmod0 = urls0[url];
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				}
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				if ( urls1.ContainsKey( url ) )
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				{
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					lastmod1 = urls1[url];
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				}
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				if ( verbose || lastmod0 != lastmod1 )

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				{
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					if ( lastmod0 != lastmod1 )
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					{
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						rc = 1;
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						if ( quiet )
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						{
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							return 1;
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						}
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						if ( string.IsNullOrWhiteSpace( lastmod0 ) ) // url in second sitemap only

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						{
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							lm1col = ConsoleColor.Red;
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							urlcol = ConsoleColor.Cyan;
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						}
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						else if ( string.IsNullOrWhiteSpace( lastmod1 ) ) // url in first sitemap only

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						{
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							lm0col = ConsoleColor.Green;
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							urlcol = ConsoleColor.White;
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						}
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						else if ( string.Compare( lastmod0, lastmod1 ) < 0 ) // url older in first sitemap

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						{
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							lm0col = ConsoleColor.Red;
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							lm1col = ConsoleColor.Green;
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							urlcol = ConsoleColor.DarkYellow;

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						}
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						else // url older in second sitemap

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						{
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							lm0col = ConsoleColor.Green;
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							lm1col = ConsoleColor.Red;
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							urlcol = ConsoleColor.Yellow;
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						}
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					}
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					Console.ForegroundColor = lm0col;
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					Console.Write( "{0,10}\t", lastmod0 );

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					Console.ForegroundColor = lm1col;
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					Console.Write( "{0,10}\t", lastmod1 );

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					Console.ForegroundColor = urlcol;
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					Console.WriteLine( url );
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					lm0col = defcol;
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					lm1col = defcol;
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					urlcol = defcol;
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				}
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			}
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			if ( rc == 0 )
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			{
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				Console.ForegroundColor = ConsoleColor.Green;

				Console.WriteLine( "\nFiles are identical" );

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			}
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			else
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			{
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				Console.ForegroundColor = ConsoleColor.Red;

				Console.WriteLine( "\nFiles are different" );

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			}
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			Console.ResetColor( );
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			if ( verbose )
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			{
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				stopwatch.Stop( );
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				Console.WriteLine( "\nComparison took {0:0.000} seconds", stopwatch.Elapsed.TotalSeconds );

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			}
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			return rc;
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		}
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		static bool QuickTestXML( string file )

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		{
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			// Check if the file starts with "<?xml"

			StreamReader test = new StreamReader( file );

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			string firstline = test.ReadLine( );
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			test.Close( );
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			return ( firstline.StartsWith( "<?xml", StringComparison.OrdinalIgnoreCase ) );

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		}
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		#region Error handling
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		public static int ShowHelp( params string[] errmsg )

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		{
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			#region Error Message
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			if ( errmsg.Length > 0 )
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			{
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				System.Collections.Generic.List<string> errargs = new System.Collections.Generic.List<string>( errmsg );

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				errargs.RemoveAt( 0 );
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				Console.Error.WriteLine( );
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				Console.ForegroundColor = ConsoleColor.Red;

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				Console.Error.Write( "ERROR:\t" );
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				Console.ForegroundColor = ConsoleColor.White;

				Console.Error.WriteLine( errmsg[0], errargs.ToArray( ) );

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				Console.ResetColor( );
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			}
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			#endregion Error Message
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			#region Help Text
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			/*
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			CompareSitemaps.exe,  Version 1.00
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			Compare 2 XML sitemaps and display the differences on screen

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			Usage:   CompareSitemaps.exe  sitemap1  sitemap2  [ /Q | /V ]

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			Where:   sitemap1, sitemap2   XML sitemap files to be compared

			         /Q                   Quiet mode: no text, return code only

			         /V                   Verbose mode: show all nodes

			                              (default: show differences only)

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			Note:    Return code 0 if files are identical, 1 if not, -1 on errors.

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			Written by Rob van der Woude
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			https://www.robvanderwoude.com
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			*/
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			#endregion Help Text
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			#region Display help
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			Console.Error.WriteLine( );
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			Console.Error.WriteLine( "CompareSitemaps.exe,  Version {0}", progver );

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			Console.Error.WriteLine( "Compare 2 XML sitemaps and display the differences on screen" );

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			Console.Error.WriteLine( );
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			Console.Error.Write( "Usage:   " );
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			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.WriteLine( "CompareSitemaps.exe  sitemap1  sitemap2  [ /V ]" );

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			Console.ResetColor( );
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			Console.Error.WriteLine( );
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			Console.Error.Write( "Where:   " );
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			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.Write( "sitemap1, sitemap2" );

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			Console.ResetColor( );
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			Console.Error.WriteLine( "   XML sitemap files to be compared" );

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			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.Write( "         /Q                   Q" );

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			Console.ResetColor( );
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			Console.Error.WriteLine( "uiet mode: no text, return code only" );

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			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.Write( "         /V                   V" );

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			Console.ResetColor( );
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			Console.Error.WriteLine( "erbose mode: show all nodes" );

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			Console.Error.WriteLine( "                              (default: show differences only)" );

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			Console.Error.WriteLine( );
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			Console.Error.WriteLine( "Note:    Return code 0 if files are identical, 1 if not, -1 on errors." );

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			Console.Error.WriteLine( );
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			Console.Error.WriteLine( "Written by Rob van der Woude" );

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			Console.Error.WriteLine( "https://www.robvanderwoude.com" );

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			#endregion Display Help
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			return -1;
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		}
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		#endregion Error handling
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	}
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}
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