/// <summary>
/// Transform method
/// false - Decompress;
/// true - Compress;
/// </summary>
public bool Transform(BlockSupplier blockSupplier, Stream destination, bool transformMethod)
{
try
{
var threadList = new List <Thread>();
ThreadFunc threadFunc;
if (transformMethod)
{
threadFunc = new Compressor();
}
else
{
threadFunc = new Decompressor();
}
var supplier = new Thread(threadFunc.Supply)
{
Name = "Supplier", IsBackground = true, Priority = ThreadPriority.Normal
};
threadList.Add(supplier);
supplier.Start(blockSupplier);
int procLim = _processorCount;
var processors = new Thread[procLim];
for (int i = 0; i < procLim; i++)
{
processors[i] = new Thread(threadFunc.Process)
{
Name = $"worker {i}", IsBackground = true, Priority = ThreadPriority.AboveNormal
};
threadList.Add(processors[i]);
processors[i].Start();
}
var consumer = new Thread(threadFunc.Consume)
{
Name = "Writer", IsBackground = true, Priority = ThreadPriority.Normal
};
threadList.Add(consumer);
consumer.Start(destination);
supplier.Join();
foreach (var t in processors)
{
t.Join();
}
consumer.Join();
}
catch (Exception e)
{
InfoPrinter.PrintError(e);
return(false);
}
return(true);
}
public static int Start(string[] args)
{
if (args.Length != 3)
{
InfoPrinter.PrintUsage(); return(0);
}
if (!File.Exists(args[1]))
{
Console.WriteLine($"Error! {args[0]}ed failed! ");
Console.WriteLine($"File {args[1]} not found!");
return(1);
}
Console.WriteLine("Start");
var timer = new Stopwatch();
ParallelGZipArchiver pgzip = new ParallelGZipArchiver();
string tempString = $"{ args[0] } source =\"{args[1]}\" to \" {args[2]}\"";
try
{
if (File.Exists(args[2]))
{
File.Delete(args[2]);
}
Console.WriteLine("Processing...");
Console.WriteLine($"Start {tempString} ...");
timer.Start();
switch (args[0])
{
case "compress":
pgzip.Compress(args[1], args[2]);
break;
case "decompress":
pgzip.Decompress(args[1], args[2]);
break;
default:
InfoPrinter.PrintUsage();
return(0);
}
}
catch (Exception e)
{
InfoPrinter.PrintError(e);
Environment.Exit(1);
}
timer.Stop();
Console.WriteLine($"End {tempString} ...");
Console.WriteLine($"Success! Elapsed time: {timer.ElapsedMilliseconds}ms");
long firstFileSize = new FileInfo(args[1]).Length;
long secondFileSize = new FileInfo(args[2]).Length;
Console.WriteLine($"File before {args[0]} = {firstFileSize}\nFile after {args[0]} = {secondFileSize}");
if (args[0] == "compress")
{
if (firstFileSize < secondFileSize)
{
Console.WriteLine($"Compression did not give a better result! File size increased!");
ModeSelector.Action(args[2], ModeSelector.IncreaseAction.Delete);
}
}
return(0);
}