1 files changed, 74 insertions, 0 deletions
diff --git a/ThirdParty/CsvHelper-master/src/CsvHelper/Configuration/MemberMapComparer.cs b/ThirdParty/CsvHelper-master/src/CsvHelper/Configuration/MemberMapComparer.cs
new file mode 100644
index 0000000..84cdf6c
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+++ b/ThirdParty/CsvHelper-master/src/CsvHelper/Configuration/MemberMapComparer.cs
@@ -0,0 +1,74 @@
+// Copyright 2009-2022 Josh Close
+// This file is a part of CsvHelper and is dual licensed under MS-PL and Apache 2.0.
+// See LICENSE.txt for details or visit http://www.opensource.org/licenses/ms-pl.html for MS-PL and http://opensource.org/licenses/Apache-2.0 for Apache 2.0.
+// https://github.com/JoshClose/CsvHelper
+using System;
+using System.Collections.Generic;
+
+namespace CsvHelper.Configuration
+{
+	/// <summary>
+	/// Used to compare <see cref="MemberMap"/>s.
+	/// The order is by field index ascending. Any
+	/// fields that don't have an index are pushed
+	/// to the bottom.
+	/// </summary>
+	internal class MemberMapComparer : IComparer<MemberMap>
+	{
+		/// <summary>
+		/// Compares two objects and returns a value indicating whether one is less than, equal to, or greater than the other.
+		/// </summary>
+		/// <returns>
+		/// Value 
+		///                     Condition 
+		///                     Less than zero 
+		///                 <paramref name="x"/> is less than <paramref name="y"/>. 
+		///                     Zero 
+		///                 <paramref name="x"/> equals <paramref name="y"/>. 
+		///                     Greater than zero 
+		///                 <paramref name="x"/> is greater than <paramref name="y"/>. 
+		/// </returns>
+		/// <param name="x">The first object to compare. 
+		///                 </param><param name="y">The second object to compare. 
+		///                 </param><exception cref="T:System.ArgumentException">Neither <paramref name="x"/> nor <paramref name="y"/> implements the <see cref="T:System.IComparable"/> interface.
+		///                     -or- 
+		///                 <paramref name="x"/> and <paramref name="y"/> are of different types and neither one can handle comparisons with the other. 
+		///                 </exception><filterpriority>2</filterpriority>
+		public virtual int Compare( object x, object y )
+		{
+			var xMember = x as MemberMap;
+			var yMember = y as MemberMap;
+			return Compare( xMember, yMember );
+		}
+
+		/// <summary>
+		/// Compares two objects and returns a value indicating whether one is less than, equal to, or greater than the other.
+		/// </summary>
+		/// <returns>
+		/// Value 
+		///                     Condition 
+		///                     Less than zero
+		///                 <paramref name="x"/> is less than <paramref name="y"/>.
+		///                     Zero
+		///                 <paramref name="x"/> equals <paramref name="y"/>.
+		///                     Greater than zero
+		///                 <paramref name="x"/> is greater than <paramref name="y"/>.
+		/// </returns>
+		/// <param name="x">The first object to compare.
+		///                 </param><param name="y">The second object to compare.
+		///                 </param>
+		public virtual int Compare( MemberMap x, MemberMap y )
+		{
+			if( x == null )
+			{
+				throw new ArgumentNullException( nameof( x ) );
+			}
+			if( y == null )
+			{
+				throw new ArgumentNullException( nameof( y ) );
+			}
+
+			return x.Data.Index.CompareTo( y.Data.Index );
+		}
+	}
+}