kenneth.skovhede@gmail.com
b0a359fd27
git-svn-id: https://duplicati.googlecode.com/svn/trunk@770 59da171f-624f-0410-aa54-27559c288bec
88 lines
2.8 KiB
C#
88 lines
2.8 KiB
C#
#region Disclaimer / License
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// Copyright (C) 2011, Kenneth Skovhede
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// http://www.hexad.dk, opensource@hexad.dk
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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//
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Text;
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namespace Duplicati.Library.Utility
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{
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/// <summary>
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/// This is a stream wrapper that reports the current progress of reading or writing the stream to the supplied delegate
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/// </summary>
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public class ProgressReportingStream : OverrideableStream
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{
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public delegate void ProgressDelegate(int progress);
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public event ProgressDelegate Progress;
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private int m_lastPg;
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private long m_expectedSize;
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private long m_streamOffset;
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public ProgressReportingStream(System.IO.Stream basestream, long expectedSize)
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: base(basestream)
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{
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m_lastPg = -1;
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m_expectedSize = expectedSize;
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m_streamOffset = 0;
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}
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public override int Read(byte[] buffer, int offset, int count)
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{
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ReportProgress();
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int r = base.Read(buffer, offset, count);
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m_streamOffset += r;
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ReportProgress();
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return r;
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}
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public override void Write(byte[] buffer, int offset, int count)
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{
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ReportProgress();
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base.Write(buffer, offset, count);
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m_streamOffset += count;
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ReportProgress();
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}
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protected override void Dispose(bool disposing)
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{
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/*if (Progress != null)
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Progress(100);*/
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base.Dispose(disposing);
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}
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private void ReportProgress()
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{
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if (Progress != null && m_expectedSize > 0)
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{
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int pg = (int)(((m_streamOffset) / (double)m_expectedSize) * 100);
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if (pg != m_lastPg)
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{
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m_lastPg = pg;
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Progress(pg);
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}
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}
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}
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}
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}
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