root/branches/Abonament/BazaReklam.Updater/ICSharpCode.SharpZipLib/BZip2/BZip2.cs @ 876

// BZip2.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.

using System;
using System.IO;

namespace ICSharpCode.SharpZipLib.BZip2
{
        
        /// <summary>
        /// A helper class to simplify compressing and decompressing streams.
        /// </summary>
        public sealed class BZip2
        {
                /// <summary>
                /// Decompress <paramref name="inStream">input</paramref> writing 
                /// decompressed data to the <paramref name="outStream">output stream</paramref>
                /// </summary>
                /// <param name="inStream">The stream containing data to decompress.</param>
                /// <param name="outStream">The stream to write decompressed data to.</param>
                /// <remarks>Both streams are closed on completion</remarks>
                public static void Decompress(Stream inStream, Stream outStream) 
                {
                        if ( inStream == null ) {
                                throw new ArgumentNullException("inStream");
                        }
                        
                        if ( outStream == null ) {
                                throw new ArgumentNullException("outStream");
                        }
                        
                        using ( outStream ) {
                                using ( BZip2InputStream bzis = new BZip2InputStream(inStream) ) {
                                        int ch = bzis.ReadByte();
                                        while (ch != -1) {
                                                outStream.WriteByte((byte)ch);
                                                ch = bzis.ReadByte();
                                        }
                                }
                        }
                }
                
                /// <summary>
                /// Compress <paramref name="inStream">input stream</paramref> sending 
                /// result to <paramref name="outStream">output stream</paramref>
                /// </summary>
                /// <param name="inStream">The stream to compress.</param>
                /// <param name="outStream">The stream to write compressed data to.</param>
                /// <param name="blockSize">The block size to use.</param>
                /// <remarks>Both streams are closed on completion</remarks>
                public static void Compress(Stream inStream, Stream outStream, int blockSize) 
                {                       
                        if ( inStream == null ) {
                                throw new ArgumentNullException("inStream");
                        }
                        
                        if ( outStream == null ) {
                                throw new ArgumentNullException("outStream");
                        }
                        
                        using ( inStream ) {
                                using (BZip2OutputStream bzos = new BZip2OutputStream(outStream, blockSize)) {
                                        int ch = inStream.ReadByte();
                                        while (ch != -1) {
                                                bzos.WriteByte((byte)ch);
                                                ch = inStream.ReadByte();
                                        }
                                }
                        }
                }

                /// <summary>
                /// Initialise a default instance of this class.
                /// </summary>
                BZip2()
                {
                }
        }
}

/* derived from a file which contained this license :
 * Copyright (c) 1999-2001 Keiron Liddle, Aftex Software
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
*/