public virtual void TestZlibFactory()
{
Configuration cfg = new Configuration();
Assert.True("testZlibFactory compression level error !!!", ZlibCompressor.CompressionLevel
.DefaultCompression == ZlibFactory.GetCompressionLevel(cfg));
Assert.True("testZlibFactory compression strategy error !!!", ZlibCompressor.CompressionStrategy
.DefaultStrategy == ZlibFactory.GetCompressionStrategy(cfg));
ZlibFactory.SetCompressionLevel(cfg, ZlibCompressor.CompressionLevel.BestCompression
);
Assert.True("testZlibFactory compression strategy error !!!", ZlibCompressor.CompressionLevel
.BestCompression == ZlibFactory.GetCompressionLevel(cfg));
ZlibFactory.SetCompressionStrategy(cfg, ZlibCompressor.CompressionStrategy.Filtered
);
Assert.True("testZlibFactory compression strategy error !!!", ZlibCompressor.CompressionStrategy
.Filtered == ZlibFactory.GetCompressionStrategy(cfg));
}
/// <summary>
/// Prepare the compressor to be used in a new stream with settings defined in
/// the given Configuration.
/// </summary>
/// <remarks>
/// Prepare the compressor to be used in a new stream with settings defined in
/// the given Configuration. It will reset the compressor's compression level
/// and compression strategy.
/// </remarks>
/// <param name="conf">Configuration storing new settings</param>
public virtual void Reinit(Configuration conf)
{
Reset();
if (conf == null)
{
return;
}
End(stream);
level = ZlibFactory.GetCompressionLevel(conf);
strategy = ZlibFactory.GetCompressionStrategy(conf);
stream = Init(level.CompressionLevel(), strategy.CompressionStrategy(), windowBits
.WindowBits());
if (Log.IsDebugEnabled())
{
Log.Debug("Reinit compressor with new compression configuration");
}
}
/// <summary>reinit the compressor with the given configuration.</summary>
/// <remarks>
/// reinit the compressor with the given configuration. It will reset the
/// compressor's compression level and compression strategy. Different from
/// <tt>ZlibCompressor</tt>, <tt>BuiltInZlibDeflater</tt> only support three
/// kind of compression strategy: FILTERED, HUFFMAN_ONLY and DEFAULT_STRATEGY.
/// It will use DEFAULT_STRATEGY as default if the configured compression
/// strategy is not supported.
/// </remarks>
public virtual void Reinit(Configuration conf)
{
Reset();
if (conf == null)
{
return;
}
SetLevel(ZlibFactory.GetCompressionLevel(conf).CompressionLevel());
ZlibCompressor.CompressionStrategy strategy = ZlibFactory.GetCompressionStrategy(
conf);
try
{
SetStrategy(strategy.CompressionStrategy());
}
catch (ArgumentException)
{
Log.Warn(strategy + " not supported by BuiltInZlibDeflater.");
SetStrategy(DefaultStrategy);
}
if (Log.IsDebugEnabled())
{
Log.Debug("Reinit compressor with new compression configuration");
}
}
/// <summary>Creates a new compressor, taking settings from the configuration.</summary>
public ZlibCompressor(Configuration conf)
: this(ZlibFactory.GetCompressionLevel(conf), ZlibFactory.GetCompressionStrategy(
conf), ZlibCompressor.CompressionHeader.DefaultHeader, DefaultDirectBufferSize)
{
}
