/// <summary>
/// Initializes a new instance of the <see cref="SnappyStream"/> class.
/// </summary>
/// <param name="s">The stream.</param>
/// <param name="mode">The compression mode.</param>
/// <param name="leaveOpen">If set to <c>true</c> leaves the stream open when complete.</param>
/// <param name="checksum"><c>true</c> if checksums should be written to the stream </param>
public SnappyStream(Stream s, CompressionMode mode, bool leaveOpen, bool checksum)
{
stream = s;
compressionMode = mode;
leaveStreamOpen = leaveOpen;
writeChecksums = checksum;
if (compressionMode == CompressionMode.Decompress)
{
if (!stream.CanRead)
{
throw new InvalidOperationException("Trying to decompress and underlying stream not readable.");
}
decompressor = new SnappyDecompressor();
CheckStreamIdentifier();
CheckStreamHeader();
}
if (compressionMode == CompressionMode.Compress)
{
if (!stream.CanWrite)
{
throw new InvalidOperationException("Trying to compress and underlying stream is not writable.");
}
compressor = new SnappyCompressor();
stream.WriteByte(StreamIdentifier);
stream.Write(StreamHeader, 0, StreamHeader.Length);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="SnappyStream"/> class.
/// </summary>
/// <param name="s">The stream.</param>
/// <param name="mode">The compression mode.</param>
/// <param name="leaveOpen">If set to <c>true</c> leaves the stream open when complete.</param>
/// <param name="checksum"><c>true</c> if checksums should be written to the stream </param>
public SnappyStream(Stream s, CompressionMode mode, bool leaveOpen, bool checksum)
{
stream = s;
compressionMode = mode;
leaveStreamOpen = leaveOpen;
writeChecksums = checksum;
if (compressionMode == CompressionMode.Decompress)
{
if (!stream.CanRead)
throw new InvalidOperationException("Trying to decompress and underlying stream not readable.");
decompressor = new SnappyDecompressor();
CheckStreamIdentifier();
CheckStreamHeader();
}
if (compressionMode == CompressionMode.Compress)
{
if (!stream.CanWrite)
throw new InvalidOperationException("Trying to compress and underlying stream is not writable.");
compressor = new SnappyCompressor();
stream.WriteByte(StreamIdentifier);
stream.Write(StreamHeader, 0, StreamHeader.Length);
}
}
public static byte[] Compress(byte[] uncompressed)
{
var target = new SnappyCompressor();
var result = new byte[target.MaxCompressedLength(uncompressed.Length)];
var count = target.Compress(uncompressed, 0, uncompressed.Length, result);
return result.Take(count).ToArray();
}
public static byte[] Compress(byte[] uncompressed)
{
var target = new SnappyCompressor();
var result = new byte[target.MaxCompressedLength(uncompressed.Length)];
var count = target.Compress(uncompressed, 0, uncompressed.Length, result);
return(result.Take(count).ToArray());
}
public static int MaxCompressedLength(int sourceLength)
{
var compressor = new SnappyCompressor();
return(compressor.MaxCompressedLength(sourceLength));
}
public static int MaxCompressedLength(int sourceLength)
{
var compressor = new SnappyCompressor();
return compressor.MaxCompressedLength(sourceLength);
}