/// <summary>
/// Compresses the specified byte range using the
/// specified compressionLevel (constants are defined in
/// java.util.zip.Deflater).
/// </summary>
public static byte[] Compress(byte[] value, int offset, int length, int compressionLevel)
{
/* Create an expandable byte array to hold the compressed data.
* You cannot use an array that's the same size as the orginal because
* there is no guarantee that the compressed data will be smaller than
* the uncompressed data. */
var bos = new ByteArrayOutputStream(length);
Deflater compressor = SharpZipLib.CreateDeflater();
try
{
compressor.SetLevel(compressionLevel);
compressor.SetInput(value, offset, length);
compressor.Finish();
// Compress the data
var buf = new byte[1024];
while (!compressor.IsFinished)
{
int count = compressor.Deflate(buf);
bos.Write(buf, 0, count);
}
}
finally
{
}
return bos.ToArray();
}
/// <summary>
/// Decompress the byte array previously returned by
/// compress
/// </summary>
public static byte[] Decompress(byte[] value, int offset, int length)
{
// Create an expandable byte array to hold the decompressed data
var bos = new ByteArrayOutputStream(length);
Inflater decompressor = SharpZipLib.CreateInflater();
try
{
decompressor.SetInput(value);
// Decompress the data
var buf = new byte[1024];
while (!decompressor.IsFinished)
{
int count = decompressor.Inflate(buf);
bos.Write(buf, 0, count);
}
}
finally
{
}
return bos.ToArray();
}
