public override ScenarioInstance <ICompressor> CreateInstance()
{
var compressor = new GzipCompressor();
var instance = new ScenarioInstance <ICompressor>(compressor);
return(instance);
}
public static void CompressorTest(string[] args)
{
MemoryDuplex memory = new MemoryDuplex();
GzipCompressor c = new GzipCompressor();
c.Pipe(memory);
GzipDecompressor d = new GzipDecompressor();
memory.Pipe(d);
d.OnData += (data) => Console.WriteLine("data {0}", data.Stringify());
c.Write(new byte[] { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 });
c.Finish();
d.Finish();
Console.ReadKey();
}
/// <summary>
/// Сжать файл.
/// </summary>
/// <param name="sourceFilename">Имя исходного файла.</param>
/// <param name="archiveFilename">Имя файла архива.</param>
/// <returns>В случае успеха функция возвращает 0, при ошибке 1.</returns>
private static int ExecuteCompress(string sourceFilename, string archiveFilename)
{
if (!File.Exists(sourceFilename))
{
Console.WriteLine("File not found:" + sourceFilename);
return(1);
}
int errorType;
using (GzipCompressor compressor = new GzipCompressor())
{
errorType = compressor.PackFile(new ArchiveSettings(sourceFilename, archiveFilename));
}
return(errorType);
}
public void OneThreadCompressorTest()
{
string sourceFilename = TestFolder.File("Emgu.chm");
string archiveFilename = "!pack.Emgu.1_thread.gz";
int errorType;
using (GzipCompressor compressor = new GzipCompressor())
{
errorType = compressor.PackFile(new ArchiveSettings(sourceFilename, archiveFilename)
{
ThreadCount = 1
});
}
Assert.AreEqual(errorType, 0);
FileInfo fileInfo = new FileInfo(archiveFilename);
Assert.AreEqual(fileInfo.Length, 11810196);
}
public void Compress(CompressionType compressionType)
{
if (IsSet)
{
throw new InvalidOperationException("Explicitly setting compression type must be performed before headers get sent");
}
Compression = compressionType;
switch (compressionType)
{
case CompressionType.None: ContentTransform = new RawUnifiedDuplex(); IsCompressionSet = false; break;
case CompressionType.Gzip: ContentTransform = new GzipCompressor(CompressionLevel); IsCompressionSet = true; break;
case CompressionType.Deflate: ContentTransform = new DeflateCompressor(CompressionLevel); IsCompressionSet = true; break;
case CompressionType.Compress: throw new NotImplementedException("Got Compress, an unimplemented compression, as compression type");
default: throw new ArgumentException("Got Unknown as compression type");
}
}
public bool TrySetFor(MessageHead head)
{
ThrowIfEnded();
BodyType?bodyType = BodyType.TryDetectFor(head);
if (bodyType == null)
{
return(false);
}
CompressionType compression = bodyType.Value.CompressionType;
TransferEncoding transfer = bodyType.Value.TransferEncoding;
int contentLength = bodyType.Value.ContentLength;
if (IsSet)
{
Finish();
}
IsSet = true;
TransferEncoding = transfer;
ContentLength = contentLength;
if (Compression != CompressionType.Unknown)
{
return(true);
}
Compression = compression;
switch (compression)
{
case CompressionType.None: ContentTransform = new RawUnifiedDuplex(); IsCompressionSet = false; break;
case CompressionType.Gzip: ContentTransform = new GzipCompressor(CompressionLevel); IsCompressionSet = true; break;
case CompressionType.Deflate: ContentTransform = new DeflateCompressor(CompressionLevel); IsCompressionSet = true; break;
case CompressionType.Compress: return(false);
default: return(false);
}
return(true);
}
public void GzipCompressor_Does_Actually_Compress()
{
var compressor = new GzipCompressor();
var source = Encoding.GetEncoding("utf-16").GetBytes(_fixture.TestString);
byte[] gzipBytes = null;
using (var input = new MemoryStream(source))
using (var output = new MemoryStream())
{
compressor.Compress(input, output);
var sourceBytes = input.ToArray();
gzipBytes = output.ToArray();
Assert.Equal(source, sourceBytes);
Assert.True(sourceBytes.Length > gzipBytes.Length);
Assert.NotEqual(sourceBytes, gzipBytes);
var gzipString = Encoding.UTF8.GetString(gzipBytes);
Assert.NotEqual(_fixture.TestString, gzipString);
}
using (var input = new MemoryStream(gzipBytes))
using (var output = new MemoryStream())
{
compressor.Decompress(input, output);
var gzippedBytes = input.ToArray();
var sourceBytes = output.ToArray();
Assert.Equal(gzipBytes, gzippedBytes);
Assert.True(gzippedBytes.Length < sourceBytes.Length);
Assert.NotEqual(gzippedBytes, sourceBytes);
Assert.Equal(source, sourceBytes);
var sourceString = Encoding.GetEncoding("utf-16").GetString(sourceBytes);
Assert.Equal(_fixture.TestString, sourceString);
}
}
