/// <summary>
/// Decompress a block of Snappy data. This must be an entire block.
/// </summary>
/// <param name="input">Data to decompress.</param>
/// <param name="output">Buffer to receive the decompressed data.</param>
/// <returns>Number of bytes written to <paramref name="output"/>.</returns>
/// <exception cref="InvalidDataException">Invalid Snappy block.</exception>
/// <exception cref="ArgumentException">Output buffer is too small.</exception>
public static int Decompress(ReadOnlySpan <byte> input, Span <byte> output)
{
var decompressor = new SnappyDecompressor();
decompressor.Decompress(input);
if (!decompressor.AllDataDecompressed)
{
throw new InvalidDataException("Incomplete Snappy block.");
}
var read = decompressor.Read(output);
if (!decompressor.EndOfFile)
{
throw new ArgumentException("Output buffer is too small.", nameof(output));
}
return(read);
}