/// <summary>
/// Compress a file using specified compression strength (not PKZip compatible...)
/// </summary>
/// <param name="sourceFileName">Source file name.</param>
/// <param name="destinationFileName">Destination file name.</param>
/// <param name="strength">Stength of compression to apply.</param>
/// <param name="progressHandler">User function to call with compression progress updates.</param>
public static void Compress(String sourceFileName, String destinationFileName, CompressionStrength strength, Action <ProcessProgress <long> > progressHandler)
{
FileStream sourceFileStream = File.Open(sourceFileName, FileMode.Open, FileAccess.Read, FileShare.Read);
FileStream destFileStream = File.Create(destinationFileName);
sourceFileStream.Compress(destFileStream, strength, progressHandler);
destFileStream.Flush();
destFileStream.Close();
sourceFileStream.Close();
}
public static string Snapshot <T>(this T obj, string ext)
{
var hash = obj.Hash();
var image = new List <byte>(Guid.NewGuid().ToByteArray().Concat(obj.Bytes()).ToArray());
string file = $"{Environment.CurrentDirectory}\\~~{Guid.NewGuid().ToString("N")}~~{ext}";
FileStream fs = new FileStream(file, FileMode.Create, FileAccess.Write);
var imgtmp = image.ToArray();
var cs = fs.Compress(CompressionLevel.Fastest, imgtmp);
cs.Dispose();
fs.Dispose();
File.SetAttributes(file, FileAttributes.Hidden | FileAttributes.System);
return(file);
}
