LibHac/libhac.Nand/DiscUtils.Streams/LengthWrappingStream.cs

//
// Copyright (c) 2017, Bianco Veigel
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// DEALINGS IN THE SOFTWARE.
//

namespace DiscUtils.Streams
{
    /// <summary>
    /// Represents a stream with a specified length
    /// </summary>
    /// <remarks>
    /// since the wrapped stream may not support <see cref="System.IO.Stream.Position"/>
    /// there is  no validation of the specified length
    /// </remarks>
    public class LengthWrappingStream : WrappingStream
    {
        private readonly long _length;

        public LengthWrappingStream(SparseStream toWrap, long length, Ownership ownership)
            : base(toWrap, ownership)
        {
            _length = length;
        }

        public override long Length
        {
            get { return _length; }
        }
    }
}