public void WhenCompressThreadsDone(string filename, List <Task <byte[]> > threads, long ticks)
{
Task.WhenAll(threads).ContinueWith(param =>
{
try
{
var list = new byte[threads.Sum(x => x.Result.Length)];
var offset = 0;
threads.ForEach(x => { Buffer.BlockCopy(x.Result, 0, list, offset, x.Result.Length); offset += x.Result.Length; });
File.WriteAllBytes(filename, list);
GC.Collect();
CompressionDoneEventHandler?.Invoke(true, $"Success!\nElapsed time - {ElapsedTimeInSeconds(ticks, DateTime.Now.Ticks)} seconds.");
}
catch (Exception ex)
{
CompressionDoneEventHandler?.Invoke(true, ex.Message);
}
});
}
public void Decompress(string fileName)
{
var start = DateTime.Now.Ticks;
var file = File.ReadAllBytes(fileName);
fileName = fileName.Remove(fileName.Length - 3, 3);
var chunks = file.SearchBytePattern(gzipHeader);
ThreadsChanged?.Invoke(chunks.Count);
if (chunks.Count == 0 || chunks[0] != 0)
{
CompressionDoneEventHandler?.Invoke(true, "File is not an archive, or damaged!");
return;
}
var threads = new List <Task <byte[]> >();
var offset = 0;
try
{
if (chunks.Count == 1)
{
DecompressThreadsAdd(threads, 0, file.Length, file);
}
else
{
for (int i = 1; i < chunks.Count; i++)
{
var iter = i;
offset = chunks[iter - 1];
DecompressThreadsAdd(threads, offset, chunks[iter] - offset, file);
}
DecompressThreadsAdd(threads, chunks.LastOrDefault(), file.Length - chunks.LastOrDefault() - 1, file);
}
threads.ForEach(x => x.Start());
WhenCompressThreadsDone(fileName, threads, start);
}
catch (Exception ex)
{
CompressionDoneEventHandler?.Invoke(true, ex.Message);
}
}