private byte[] ReadBlock(BlockHandle handle)
{
// var br = new BinaryReader(stream);
// stream.Position = handle.Offset;
// TODO optimize mem usage
// TODO max int byte[]
var n = (int)handle.Size;
var data = _contentReader.ReadContent(handle.Offset, n + BlockTrailerSize);
if (data.Length != n + BlockTrailerSize)
{
throw new InvalidDataException("truncated block read");
}
// TODO crc32 checksum
switch ((CompressionType)data[n])
{
case CompressionType.NoCompression:
Array.Resize(ref data, n);
return(data);
case CompressionType.SnappyCompression:
return(_decompressor.Decompress(data, 0, n));
default:
throw new InvalidDataException("bad block type");
}
}
public static byte[] Decompress(this ISnappyDecompressor decompressor, byte[] src)
{
return(decompressor.Decompress(src, 0, src.Length));
}
