LibHac/LibHac.Nand/DiscUtils.Streams/Builder/PassthroughStreamBuilder.cs

//
// Copyright (c) 2008-2011, Kenneth Bell
//
// 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
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//

using System.Collections.Generic;
using System.IO;

namespace DiscUtils.Streams
{
    public class PassthroughStreamBuilder : StreamBuilder
    {
        private readonly Stream _stream;

        public PassthroughStreamBuilder(Stream stream)
        {
            _stream = stream;
        }

        protected override List<BuilderExtent> FixExtents(out long totalLength)
        {
            _stream.Position = 0;
            List<BuilderExtent> result = new List<BuilderExtent>();
            result.Add(new BuilderStreamExtent(0, _stream));
            totalLength = _stream.Length;
            return result;
        }
    }
}