protected override void ProccessingData(object indexThread)
{
try
{
byte[] hederBytes;
int lenghtBlock;
int dataLenght;
byte[] data;
long position;
long sizefile;
while (true && !IsError)
{
BlockData block;
if (BlockReaded.TryTakeBlock(out block))
{
using (var memStream = new MemoryStream(block.Bytes))
{
using (var gzipStream = new GZipStream(memStream, CompressionMode.Decompress))
{
hederBytes = new byte[4] {
block.Bytes[4], block.Bytes[5], block.Bytes[6], block.Bytes[7]
};
lenghtBlock = BitConverter.ToInt32(hederBytes, 0);
dataLenght = BitConverter.ToInt32(block.Bytes, lenghtBlock - 4);
data = new byte[dataLenght];
gzipStream.Read(data, 0, dataLenght);
//отделяем от data первые 8 байт - 4 байта позиция записи, 4 байта размер файла
data = GetHelpersData(out position, out sizefile, data);
BlockProcessed.AddBlock(new BlockData(position, sizefile, data));
BlocksProcessedCount++;
}
}
}
else
{
if (BlockReaded.IsFinish && BlocksProcessedCount == BlocksCount)
{
BlockProcessed.Finish();
}
return;
}
}
}
catch (IOException e)
{
ErrorOutput(e, "Unable to complete decompression operation due to insufficient RAM. Please close other applications and try again. ");
}
catch (OutOfMemoryException e)
{
ErrorOutput(e, "Not enough RAM to complete file decompression. Please close other applications and try again. ");
}
catch (Exception e)
{
ErrorOutput(e);
}
finally
{
EventWaitHandleArray[(int)indexThread].Set();
}
}
/// <summary>
/// сжатие данных
/// </summary>
protected override void ProccessingData(object indexThread)
{
try
{
BlockData block;
while (true && !IsError)
{
if (BlockReaded.TryTakeBlock(out block))
{
using (var memStream = new MemoryStream())
{
using (var gzipStream = new GZipStream(memStream, CompressionMode.Compress))
{
gzipStream.Write(block.Bytes, 0, block.Bytes.Length);
}
BlockProcessed.AddBlock(new BlockData(memStream.ToArray()));
BlocksProcessedCount++;
}
}
else
{
if (BlockReaded.IsFinish && BlocksProcessedCount == BlocksCount)
{
BlockProcessed.Finish();
}
return;
}
}
}
catch (IOException e)
{
ErrorOutput(e, "Unable to complete compression operation due to insufficient RAM. Please close other applications and try again. ");
}
catch (OutOfMemoryException e)
{
ErrorOutput(e, "Not enough RAM to complete file compression. Please close other applications and try again. ");
}
catch (Exception e)
{
ErrorOutput(e);
}
finally
{
EventWaitHandleArray[(int)indexThread].Set();
}
}
protected override void ReadData()
{
try
{
using (var input = new FileStream(InputFile, FileMode.Open, FileAccess.Read))
{
var lenght = input.Length;
int readCount;
byte[] bytes;
while (input.Position < lenght && !IsError)
{
if (lenght - input.Position < BlockSize)
{
readCount = (int)(lenght - input.Position);
}
else
{
readCount = BlockSize;
}
bytes = new byte[readCount];
input.Read(bytes, 0, readCount);
//добавим доп инф. о позиции массива байт в файле и размере файла
bytes = AddedHelpersData(input.Position - readCount, lenght, bytes);
BlockReaded.AddBlock(new BlockData(bytes));
}
BlockReaded.Finish();
}
}
catch (OutOfMemoryException e)
{
ErrorOutput(e, "Not enough RAM to complete file read. Please close other applications and try again. ");
}
catch (Exception e)
{
ErrorOutput(e);
}
finally
{
EventWaitHandleRead.Set();
}
}
protected override void ReadData()
{
try
{
using (var input = new FileStream(InputFile, FileMode.Open, FileAccess.Read))
{
byte[] headerGzip;
byte[] bytes;
int lenghtBlock;
while (input.Position < input.Length && !IsError)
{
//читаем заголовок запакованного блока и получаем размер полезной нагрузки указанной при записи
headerGzip = new byte[8];
input.Read(headerGzip, 0, headerGzip.Length);
lenghtBlock = BitConverter.ToInt32(headerGzip, 4);
bytes = new byte[lenghtBlock];
headerGzip.CopyTo(bytes, 0);
input.Read(bytes, headerGzip.Length, lenghtBlock - headerGzip.Length);
BlockReaded.AddBlock(new BlockData(bytes));
}
BlockReaded.Finish();
EventWaitHandleRead.Set();
}
}
catch (OutOfMemoryException e)
{
ErrorOutput(e, "Not enough RAM to complete file read. Please close other applications and try again. ");
}
catch (Exception e)
{
ErrorOutput(e);
}
finally
{
EventWaitHandleRead.Set();
}
}
