//
// 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.
//

namespace DiscUtils.Ntfs
{
    using System.Collections.Generic;

    internal abstract class ClusterStream
    {
        public abstract long AllocatedClusterCount
        {
            get;
        }

        public abstract IEnumerable<Range<long, long>> StoredClusters
        {
            get;
        }

        public abstract bool IsClusterStored(long vcn);

        public abstract void ExpandToClusters(long numVirtualClusters, NonResidentAttributeRecord extent, bool allocate);

        public abstract void TruncateToClusters(long numVirtualClusters);

        public abstract void ReadClusters(long startVcn, int count, byte[] buffer, int offset);

        public abstract int WriteClusters(long startVcn, int count, byte[] buffer, int offset);

        public abstract int ClearClusters(long startVcn, int count);
    }
}