127 lines
3.6 KiB
C#
127 lines
3.6 KiB
C#
//
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// Copyright (c) 2008-2012, Kenneth Bell
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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using System.Collections.Generic;
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using System.IO;
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namespace DiscUtils.Streams
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{
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/// <summary>
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/// Base class for streams that wrap another stream.
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/// </summary>
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/// <remarks>
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/// Provides the default implementation of methods & properties, so
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/// wrapping streams need only override the methods they need to intercept.
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/// </remarks>
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public class WrappingStream : SparseStream
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{
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private readonly Ownership _ownership;
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private SparseStream _wrapped;
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public WrappingStream(SparseStream toWrap, Ownership ownership)
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{
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_wrapped = toWrap;
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_ownership = ownership;
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}
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public override bool CanRead
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{
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get { return _wrapped.CanRead; }
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}
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public override bool CanSeek
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{
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get { return _wrapped.CanSeek; }
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}
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public override bool CanWrite
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{
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get { return _wrapped.CanWrite; }
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}
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public override IEnumerable<StreamExtent> Extents
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{
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get { return _wrapped.Extents; }
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}
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public override long Length
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{
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get { return _wrapped.Length; }
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}
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public override long Position
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{
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get { return _wrapped.Position; }
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set { _wrapped.Position = value; }
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}
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public override void Flush()
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{
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_wrapped.Flush();
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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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return _wrapped.Read(buffer, offset, count);
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}
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public override long Seek(long offset, SeekOrigin origin)
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{
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return _wrapped.Seek(offset, origin);
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}
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public override void SetLength(long value)
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{
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_wrapped.SetLength(value);
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}
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public override void Clear(int count)
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{
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_wrapped.Clear(count);
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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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_wrapped.Write(buffer, offset, count);
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}
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protected override void Dispose(bool disposing)
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{
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try
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{
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if (disposing)
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{
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if (_wrapped != null && _ownership == Ownership.Dispose)
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{
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_wrapped.Dispose();
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}
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_wrapped = null;
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}
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}
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finally
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{
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base.Dispose(disposing);
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}
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}
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}
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} |