/// <summary>
/// Extends BeginWrite so that when a state object is not needed, null does not need to be passed.
/// <example>
/// gzipstream.BeginWrite(array, offset, count, asyncCallback);
/// </example>
/// </summary>
public static IAsyncResult BeginWrite(this GZipStream gzipstream, Byte[] array, Int32 offset, Int32 count, AsyncCallback asyncCallback)
{
if (gzipstream == null)
{
throw new ArgumentNullException("gzipstream");
}
return(gzipstream.BeginWrite(array, offset, count, asyncCallback, null));
}
/// <summary>
/// Extends BeginWrite so that buffer offset of 0 and call to Array.Length are not needed.
/// <example>
/// gzipstream.BeginWrite(array, asyncCallback);
/// </example>
/// </summary>
public static IAsyncResult BeginWrite(this GZipStream gzipstream, Byte[] array, AsyncCallback asyncCallback)
{
if (gzipstream == null)
{
throw new ArgumentNullException("gzipstream");
}
if (array == null)
{
throw new ArgumentNullException("array");
}
return(gzipstream.BeginWrite(array, 0, array.Length, asyncCallback));
}
public void AsyncWrite()
{
GZipStream cs = new GZipStream(new MemoryStream(), CompressionMode.Compress);
message = "AsyncWrite";
reset.Reset();
IAsyncResult r = cs.BeginWrite(new byte[0], 0, 0, new AsyncCallback(WriteCallback), cs);
Assert.IsNotNull(r, "IAsyncResult");
if (!reset.WaitOne(timeout, true))
{
Assert.Ignore("Timeout");
}
Assert.IsNull(message, message);
// the Close is currently buggy in Mono
// cs.Close ();
}
/// <summary>
/// Завершение чтения входного потока
/// </summary>
/// <param name="result">result - содержит manualEvent</param>
protected virtual void EndReadCallBack(IAsyncResult result)
{
ManualResetEvent me = (ManualResetEvent)result.AsyncState;
// Console.WriteLine("Read: Off={0} bytes={1}", offset, numBytes);
// Читаем блок данных в буфер
numBytes = fsStream.EndRead(result);
// Теперь в buf находится numBytes байтов, их надо упаковать
if (compressType == CompressType.Deflate)
{
result = dfStream.BeginWrite(buf, 0, numBytes, new AsyncCallback(EndWriteCallBack), me);
}
else
{
result = gzStream.BeginWrite(buf, 0, numBytes, new AsyncCallback(EndWriteCallBack), me);
}
}