71 lines
2.0 KiB
C#
71 lines
2.0 KiB
C#
namespace MareSynchronosStaticFilesServer.Utils;
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public sealed class BlockFileDataStream : Stream
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{
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private readonly BlockFileDataSubstream[] _substreams;
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private int _currentStreamIndex = 0;
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public BlockFileDataStream(BlockFileDataSubstream[] substreams)
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{
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_substreams = substreams;
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}
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public override bool CanRead => true;
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public override bool CanSeek => false;
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public override bool CanWrite => false;
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public override long Length => throw new NotSupportedException();
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public override long Position { get => throw new NotSupportedException(); set => throw new NotSupportedException(); }
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public override int Read(byte[] buffer, int offset, int count)
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{
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int totalRead = 0;
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int currentOffset = 0;
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int remainingCount = count;
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while (totalRead < count && _currentStreamIndex < _substreams.Length)
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{
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var lastReadBytes = _substreams[_currentStreamIndex].Read(buffer, currentOffset, remainingCount);
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if (lastReadBytes < remainingCount)
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{
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_substreams[_currentStreamIndex].Dispose();
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_currentStreamIndex++;
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}
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totalRead += lastReadBytes;
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currentOffset += lastReadBytes;
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remainingCount -= lastReadBytes;
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}
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return totalRead;
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}
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protected override void Dispose(bool disposing)
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{
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base.Dispose(disposing);
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foreach (var substream in _substreams)
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{
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// probably unnecessary but better safe than sorry
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substream.Dispose();
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}
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}
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public override void Flush()
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{
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throw new NotSupportedException();
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}
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public override long Seek(long offset, SeekOrigin origin)
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{
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throw new NotSupportedException();
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}
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public override void SetLength(long value)
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{
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throw new NotSupportedException();
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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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throw new NotSupportedException();
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}
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}
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