//https://stackoverflow.com/questions/3722192/how-do-i-use-gzipstream-with-system-io-memorystream
/// <summary>
/// This method takes a dictionary object and serializes it into a binary array.
/// </summary>
/// <param name="plugin">the current plugin</param>
/// <param name="stateInfo">The Dictionary object of string and object</param>
/// <returns>the dictionary object serialized into byte array</returns>
public static byte[] SerializeAndCompressStateInformation(this IPluginWithStateInfo plugin, Dictionary <string, object> stateInfo)
{
byte[] retArr = new byte[] { byte.MinValue };
try
{
using (MemoryStream msCompressed = new MemoryStream()) //what gzip writes to
{
using (GZipStream gZipStream = new GZipStream(msCompressed, CompressionMode.Compress)) //setting up gzip
using (MemoryStream msToCompress = new MemoryStream()) //what the settings will serialize to
{
BinaryFormatter formatter = new BinaryFormatter();
//serialize the info into bytes
formatter.Serialize(msToCompress, stateInfo);
//reset to 0 to read from beginning byte[0] fix.
msToCompress.Position = 0;
//this then does the compression
msToCompress.CopyTo(gZipStream);
}
//the compressed data as an array of bytes
retArr = msCompressed.ToArray();
}
}
catch (Exception ex)
{
Logger.Error(ex.Message, ex);
#if DEBUG
throw ex;
#endif
}
return(retArr);
}
/// <summary>
/// This method takes a byte array and de-serializes it into a dictionary of string and object.
/// </summary>
/// <param name="plugin">the current plugin</param>
/// <param name="stateInfo">the byte array that will be converted to a dictionary</param>
/// <returns></returns>
public static Dictionary <string, object> DeserializeAndDecompressStateInformation(this IPluginWithStateInfo plugin, byte[] stateInfo)
{
Dictionary <string, object> settings = new Dictionary <string, object>();
try
{
using (MemoryStream msDecompressed = new MemoryStream()) //the stream that will hold the decompressed data
{
using (MemoryStream msCompressed = new MemoryStream(stateInfo)) //the compressed data
using (GZipStream gzDecomp = new GZipStream(msCompressed, CompressionMode.Decompress)) //the gzip that will decompress
{
msCompressed.Position = 0; //fix for byte[0]
gzDecomp.CopyTo(msDecompressed); //decompress the data
}
BinaryFormatter formatter = new BinaryFormatter();
//prevents 'End of stream encountered' error
msDecompressed.Position = 0;
//change the decompressed data to the object
settings = formatter.Deserialize(msDecompressed) as Dictionary <string, object>;
}
}
catch (Exception ex)
{
Logger.Error(ex.Message, ex);
#if DEBUG
throw ex;
#endif
}
return(settings);
}
