private void CompressString(string str)
{
MemoryStream memoryStream = new MemoryStream();
CompressionMethod method = (CompressionMethod)Enum.Parse(typeof(CompressionMethod), CompressionMethods.SelectedValue.ToString(), false);
CompressionSettings settins = null;
switch (method)
{
case CompressionMethod.Stored:
settins = new StoreSettings();
break;
case CompressionMethod.Deflate:
settins = new DeflateSettings();
break;
case CompressionMethod.Lzma:
settins = new LzmaSettings();
break;
}
CompressedStream zipOutputStream = new CompressedStream(memoryStream, StreamOperationMode.Write, settins);
StreamWriter writer = new StreamWriter(zipOutputStream);
writer.Write(str);
writer.Flush();
CompressedText.Text = Convert.ToBase64String(memoryStream.ToArray());
}
private void LzmaSettings()
{
#region radziplibrary-compression-settings_1
LzmaSettings compressionSettings = new LzmaSettings();
compressionSettings.DictionarySize = 23;
compressionSettings.FastBytes = 32;
compressionSettings.LiteralContextBits = 3;
compressionSettings.LiteralPositionBits = 3;
compressionSettings.MatchFinderType = LzmaMatchFinderType.BT4;
compressionSettings.PositionStateBits = 2;
#endregion
}
internal override void CopyFrom(CompressionSettings baseSettings)
{
LzmaSettings lzmaSettings = baseSettings as LzmaSettings;
if (lzmaSettings == null)
{
return;
}
this.UseZipHeader = lzmaSettings.UseZipHeader;
this.DictionarySize = lzmaSettings.DictionarySize;
this.PositionStateBits = lzmaSettings.PositionStateBits;
this.LiteralContextBits = lzmaSettings.LiteralContextBits;
this.LiteralPositionBits = lzmaSettings.LiteralPositionBits;
this.FastBytes = lzmaSettings.FastBytes;
this.MatchFinderType = lzmaSettings.MatchFinderType;
}
public LzmaTransformBase(LzmaSettings settings)
{
this.Settings = settings;
}
