// Noddybox.DOOM - DOOM WAD Wrapper
// Copyright (C) 2004  Ian Cowburn
// 
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
// 
// This program 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 General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
//
using System;
using System.IO;

namespace Noddybox.DOOM
{
	/// <summary>
	/// Describes a directory entry in a WAD file
	/// </summary>
	public class WADEntry
	{
		// ====================================
		// PUBLIC
		// ====================================

		/// <summary>
		/// Create an empty lump
		/// </summary>
		public WADEntry()
		{
			Name="LUMP";
			Data=null;
		}

		/// <summary>
		/// Create a lump
		/// </summary>
		/// <param name="name">The name</param>
		/// <param name="data">The data</param>
		public WADEntry(string name, byte[] data)
		{
			Name=name;
			Data=data;
		}
		
		/// <summary>
		/// Create a lump
		/// </summary>
		/// <param name="we">The lump to copy</param>
		public WADEntry(WADEntry we)
		{
			Name=we.Name;
			Data=(byte[])we.Data.Clone();
		}
		
		/// <summary>
		/// Get/set the lump's name
		/// </summary>
		public string Name
		{
			get {return m_name;}
			set
			{
				m_name=value;
				
				if (m_name.Length>8)
				{
					m_name=m_name.Substring(0,8);
				}
				
				m_name=m_name.Trim(new char[] {'\0'});
			}
		}
		
		/// <summary>
		/// Get the length of the lump's data
		/// </summary>
		public int Length
		{
			get {return m_length;}
		}
		
		/// <summary>
		/// Get/set the lump data
		/// </summary>
		public byte[] Data
		{
			get {return m_data;}
			set
			{
				m_data=value;
				
				if (m_data!=null)
				{
					m_length=m_data.Length;
				}
				else
				{
					m_length=0;
				}
			}
		}
		
		/// <summary>
		/// Index into the lump data as bytes
		/// </summary>
		public byte this[int index]
		{
			get {return m_data[index];}
			set {m_data[index]=value;}
		}
		
		/// <summary>
		/// Index into the lump data as bytes
		/// </summary>
		public byte this[uint index]
		{
			get {return m_data[index];}
			set {m_data[index]=value;}
		}
		
		/// <summary>
		/// Get the lump data as a MemoryStream
		/// </summary>
		public MemoryStream Stream
		{
			get {return new MemoryStream(m_data);}
		}
		
		// ====================================
		// PRIVATE
		// ====================================
		private string		m_name;
		private int			m_length;
		private byte[]		m_data;
	}
}