private void TestCompression()
{
Compress cmp = new Compress();
MemoryStream cstm;
/*string folder = @"C:\Tests\Compression Test";
cstm = cmp.CompressArchive(folder);
cstm.Position = 0;
cmp.DeCompressArchive(cstm, folder + @"\Out");*/
byte[] data = new CSPRng().GetBytes(1000);
cstm = cmp.CompressStream(new MemoryStream(data));
cstm.Position = 0;
MemoryStream cmp2 = cmp.DeCompressStream(cstm);
cmp2.Position = 0;
if (!Compare.AreEqual(data, cmp2.ToArray()))
throw new Exception("CompressionTest: decompressed array is not equal!");
cmp.CompressionFormat = Compress.CompressionFormats.GZip;
cstm = cmp.CompressStream(new MemoryStream(data));
cstm.Position = 0;
cmp2 = cmp.DeCompressStream(cstm);
cmp2.Position = 0;
if (!Compare.AreEqual(data, cmp2.ToArray()))
throw new Exception("CompressionTest: decompressed array is not equal!");
}
/// <summary>
/// Initialize internal state
/// </summary>
///
/// <param name="DirectoryPath">The Source directory, or destination path</param>
/// <param name="DataStream">The input or output stream</param>
/// <param name="CompressionFormat">The type of compression to apply to the stream stream</param>
/// <param name="DisposeStream">Dispose of streams when Dispose() on this class is called</param>
///
/// <exception cref="CryptoProcessingException">Thrown if the directory path has no files, does not exist, or is not writeable</exception>
public void Initialize(string DirectoryPath, Stream DataStream, Compress.CompressionFormats CompressionFormat = Compress.CompressionFormats.Deflate, bool DisposeStream = false)
{
_dirPath = DirectoryPath;
_cmpEngine = new Compress(CompressionFormat);
if (_isCompression)
{
if (!DirectoryTools.Exists(DirectoryPath))
throw new CryptoProcessingException("CompressionCipher:Initialize", "The directory does not exist!", new ArgumentException());
if (DirectoryTools.FileCount(DirectoryPath) < 1)
throw new CryptoProcessingException("CompressionCipher:Initialize", "There are no files in this directory!", new ArgumentException());
MemoryStream inStream = _cmpEngine.CompressArchive(DirectoryPath);
inStream.Seek(0, SeekOrigin.Begin);
base.Initialize(inStream, DataStream, DisposeStream);
}
else
{
if (!DirectoryTools.Exists(DirectoryPath))
Directory.CreateDirectory(DirectoryPath);
if (!DirectoryTools.IsWritable(DirectoryPath))
throw new CryptoProcessingException("CompressionCipher:Initialize", "Directory path is not writable! Check permissions.", new AccessViolationException());
MemoryStream outStream = new MemoryStream();
base.Initialize(DataStream, outStream, DisposeStream);
}
}
