public static void AddDecompressionRequest(DecompressionRequest req)
{
lock(DecompressionRequests)
{
DecompressionRequests.Enqueue(req);
}
}
private static int Decompress(DecompressionRequest req)
{
string zipName = req.sourceFilename;
string fileName = req.targetFilename;
string dstFile = "";
FileStream fsIn = null;
FileStream fsOut = null;
GZipStream gzip = null;
const int bufferSize = 4096;
byte[] buffer = new byte[bufferSize];
int count = 0;
int totalCount = 0;
try
{
dstFile = fileName;
fsIn = new FileStream(zipName, FileMode.Open, FileAccess.Read, FileShare.Read);
fsOut = new FileStream(dstFile, FileMode.Create, FileAccess.Write, FileShare.None);
gzip = new GZipStream(fsIn, CompressionMode.Decompress, true);
while (true)
{
count = gzip.Read(buffer, 0, bufferSize);
if (count != 0)
{
fsOut.Write(buffer, 0, count);
totalCount += count;
}
if (count != bufferSize)
{
// have reached the end
break;
}
}
}
catch (Exception ex)
{
// handle or display the error
System.Diagnostics.Debug.Assert(false, ex.ToString());
}
finally
{
if (gzip != null)
{
gzip.Close();
gzip = null;
}
if (fsOut != null)
{
fsOut.Close();
fsOut = null;
}
if (fsIn != null)
{
fsIn.Close();
fsIn = null;
}
}
return totalCount;
}