// 
// System.Xml.Serialization.KeyHelper.cs 
//
// Author:
//   Lluis Sanchez Gual (lluis@ximian.com)
//
// Copyright (C) 2004 Novell, Inc.
//

//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

using System.Collections;
using System.Globalization;
using System.Text;

namespace System.Xml.Serialization 
{
	internal class KeyHelper
	{
		public static void AddField (StringBuilder sb, int n, string val)
		{
			AddField (sb, n, val, null);
		}
		
		public static void AddField (StringBuilder sb, int n, string val, string def)
		{
			if (val != def) {
				sb.Append (n.ToString());
				sb.Append (val.Length.ToString(CultureInfo.InvariantCulture));
				sb.Append (val);
			}
		}
		
		public static void AddField (StringBuilder sb, int n, bool val)
		{
			AddField (sb, n, val, false);
		}
		
		public static void AddField (StringBuilder sb, int n, bool val, bool def)
		{
			if (val != def)
				sb.Append (n.ToString());
		}
		
		public static void AddField (StringBuilder sb, int n, int val, int def)
		{
			if (val != def) {
				sb.Append (n.ToString());
				sb.Append (val.ToString(CultureInfo.InvariantCulture));
			}
		}
		
		public static void AddField (StringBuilder sb, int n, Type val)
		{
			if (val != null) {
				sb.Append (n.ToString(CultureInfo.InvariantCulture));
				sb.Append (val.ToString());
			}
		}
	}
}