using System;
using System.Collections;

namespace Server.Commands.Generic
{
	public sealed class LimitExtension : BaseExtension
	{
		public static ExtensionInfo ExtInfo = new ExtensionInfo( 80, "Limit", 1, delegate { return new LimitExtension(); } );

		public static void Initialize()
		{
			ExtensionInfo.Register( ExtInfo );
		}

		public override ExtensionInfo Info => ExtInfo;

		public int Limit { get; private set; }

		public LimitExtension()
		{
		}

		public override void Parse( Mobile from, string[] arguments, int offset, int size )
		{
			Limit = Utility.ToInt32( arguments[offset] );

			if ( Limit < 0 )
				throw new Exception( "Limit cannot be less than zero." );
		}

		public override void Filter( ArrayList list )
		{
			if ( list.Count > Limit )
				list.RemoveRange( Limit, list.Count - Limit );
		}
	}
}