public static int Uncompress(byte[] input, int inputOffset, int inputLength, byte[] output, int outputOffset, int outputLength)
{
Ensure.IsNotNull(input, nameof(input));
Ensure.IsNotNull(output, nameof(output));
EnsureBufferRangeIsValid(inputOffset, inputLength, input.Length);
EnsureBufferRangeIsValid(outputOffset, outputLength, output.Length);
if (inputLength == 0)
{
throw new InvalidDataException("Compressed block cannot be empty.");
}
var status = SnappyAdapter.snappy_uncompress(input, inputOffset, inputLength, output, outputOffset, ref outputLength);
switch (status)
{
case SnappyStatus.Ok:
return(outputLength);
case SnappyStatus.BufferTooSmall:
throw new ArgumentOutOfRangeException("Output array is too small.");
default:
throw new InvalidDataException("Input is not a valid snappy-compressed block.");
}
}
public static bool Validate(byte[] input, int inputOffset, int inputLength)
{
Ensure.IsNotNull(input, nameof(input));
EnsureBufferRangeIsValid(inputOffset, inputLength, input.Length);
if (inputLength == 0)
{
return(false);
}
return(SnappyAdapter.snappy_validate_compressed_buffer(input, inputOffset, inputLength) == SnappyStatus.Ok);
}
public static int GetUncompressedLength(byte[] input, int inputOffset, int inputLength)
{
Ensure.IsNotNull(input, nameof(input));
EnsureBufferRangeIsValid(inputOffset, inputLength, input.Length);
if (inputLength == 0)
{
throw new InvalidDataException("Compressed block cannot be empty.");
}
var status = SnappyAdapter.snappy_uncompressed_length(input, inputOffset, inputLength, out var outputLength);
switch (status)
{
case SnappyStatus.Ok:
return(outputLength);
default:
throw new InvalidDataException("Input is not a valid snappy-compressed block.");
}
}
public static int GetMaxCompressedLength(int inputLength)
{
return(SnappyAdapter.snappy_max_compressed_length(inputLength));
}