Util/Mail/MIMEParser/Attachment.cs

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/******************************************************************************
	Copyright 2003-2004 Hamid Qureshi and Unruled Boy 
	OpenPOP.Net is free software; you can redistribute it and/or modify
	it under the terms of the Lesser GNU General Public License as published by
	the Free Software Foundation; either version 2 of the License, or
	(at your option) any later version.

	OpenPOP.Net 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
	Lesser GNU General Public License for more details.

	You should have received a copy of the Lesser 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
/*******************************************************************************/

/*
*Name:			Util.Mail.MIMEParser.Attachment
*Function:		Attachment
*Author:		Hamid Qureshi
*Created:		2003/8
*Last Modified:	2004/5/28 10:19 GMT+8 by Unruled Boy
*Description:
*Changes:		
*				2004/5/28 10:19 GMT+8 by grandepuffo via Unruled Boy
*					1.Fixed a bug in parsing ContentFileName @ https://sourceforge.net/forum/message.php?msg_id=2589759
*				2004/5/17 14:20 GMT+8 by Unruled Boy
*					1.Fixed a bug in parsing FileName
*				2004/5/8 17:00 GMT+8 by Unruled Boy
*					1.Again, hopefully we have handled the NotAttachment property correctly
*				2004/5/1 14:13 GMT+8 by Unruled Boy
*					1.Adding three more constructors
*					2.Adding descriptions to every public functions/property/void
*				2004/4/29 19:05 GMT+8 by Unruled Boy
*					1.Hopefully we have handled the NotAttachment property correctly
*				2004/3/29 10:28 GMT+8 by Unruled Boy
*					1.removing bugs in decoding attachment
*				2004/3/29 17:32 GMT+8 by Unruled Boy
*					1.support for reply message using ms-tnef 
*					2.adding detail description for every function
*					3.cleaning up the codes
*/
using System;
using System.IO;
using System.Text;
using System.Text.RegularExpressions;

namespace Util.Mail.MIMEParser
{
	/// <summary>
	/// Summary description for Attachment.
	/// </summary>
	public class Attachment : IComparable
	{
		#region Member Variables
		private string _contentType=null;
		private string _contentCharset=null;
		private string _contentFormat=null;
		private string _contentTransferEncoding=null;