BN089-BS开发框架MVC4版/source20131023/Zephyr.Net/Zephyr.Utils/Compress/Ziplib/Tar/TarArchive.cs

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// TarArchive.cs
//
// Copyright (C) 2001 Mike Krueger
//
// 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.
//
// Linking this library statically or dynamically with other modules is
// making a combined work based on this library.  Thus, the terms and
// conditions of the GNU General Public License cover the whole
// combination.
//
// As a special exception, the copyright holders of this library give you
// permission to link this library with independent modules to produce an
// executable, regardless of the license terms of these independent
// modules, and to copy and distribute the resulting executable under
// terms of your choice, provided that you also meet, for each linked
// independent module, the terms and conditions of the license of that
// module.  An independent module is a module which is not derived from
// or based on this library.  If you modify this library, you may extend
// this exception to your version of the library, but you are not
// obligated to do so.  If you do not wish to do so, delete this
// exception statement from your version.

// HISTORY
//	28-01-2010	DavidPierson	Added IsStreamOwner

using System;
using System.IO;
using System.Text;

namespace Zephyr.Utils.ZipLib.Tar
{
	/// <summary>
	/// Used to advise clients of 'events' while processing archives
	/// </summary>
	public delegate void ProgressMessageHandler(TarArchive archive, TarEntry entry, string message);

	/// <summary>
	/// The TarArchive class implements the concept of a
	/// 'Tape Archive'. A tar archive is a series of entries, each of
	/// which represents a file system object. Each entry in
	/// the archive consists of a header block followed by 0 or more data blocks.
	/// Directory entries consist only of the header block, and are followed by entries
	/// for the directory's contents. File entries consist of a
	/// header followed by the number of blocks needed to
	/// contain the file's contents. All entries are written on
	/// block boundaries. Blocks are 512 bytes long.
	///