internal AsyncCompletionResult StartAsync(AsyncEventArgs <XmlNodeWriterWriteBase64TextArgs> xmlNodeWriterState)
{
Fx.Assert(xmlNodeWriterState != null, "xmlNodeWriterState cannot be null.");
Fx.Assert(this.nodeState == null, "nodeState is not null.");
this.nodeState = xmlNodeWriterState;
XmlNodeWriterWriteBase64TextArgs nodeWriterArgs = xmlNodeWriterState.Arguments;
if (nodeWriterArgs.TrailCount > 0)
{
this.writerArgs.Buffer = nodeWriterArgs.TrailBuffer;
this.writerArgs.Offset = 0;
this.writerArgs.Count = nodeWriterArgs.TrailCount;
this.writerState.Set(onTrailByteComplete, this.writerArgs, this);
if (this.InternalWriteBase64TextAsync(this.writerState) != AsyncCompletionResult.Completed)
{
return(AsyncCompletionResult.Queued);
}
this.writerState.Complete(true);
}
if (this.WriteBufferAsync() == AsyncCompletionResult.Completed)
{
this.nodeState = null;
return(AsyncCompletionResult.Completed);
}
return(AsyncCompletionResult.Queued);
}
bool HandleWriteBase64Text(bool isAsyncCallback)
{
Fx.Assert(this.count > 0 && this.actualByteCount >= 3, "HandleWriteBase64Text cannot be invoked with less than 3 bytes.");
if (!writer.isXmlnsAttribute)
{
if (!isAsyncCallback)
{
if (this.nodeWriterAsyncState == null)
{
this.nodeWriterAsyncState = new AsyncEventArgs<XmlNodeWriterWriteBase64TextArgs>();
this.nodeWriterArgs = new XmlNodeWriterWriteBase64TextArgs();
}
if (onWriteComplete == null)
{
onWriteComplete = new AsyncEventArgsCallback(OnWriteComplete);
}
this.writer.StartContent();
this.nodeWriterArgs.TrailBuffer = this.writer.trailBytes;
this.nodeWriterArgs.TrailCount = this.writer.trailByteCount;
this.nodeWriterArgs.Buffer = this.buffer;
this.nodeWriterArgs.Offset = this.offset;
this.nodeWriterArgs.Count = this.actualByteCount - this.writer.trailByteCount;
this.nodeWriterAsyncState.Set(onWriteComplete, this.nodeWriterArgs, this);
if (this.writer.writer.WriteBase64TextAsync(this.nodeWriterAsyncState) != AsyncCompletionResult.Completed)
{
return false;
}
this.nodeWriterAsyncState.Complete(true);
}
this.writer.EndContent();
}
this.writer.trailByteCount = (this.totalByteCount - this.actualByteCount);
if (this.writer.trailByteCount > 0)
{
int trailOffset = offset + count - this.writer.trailByteCount;
for (int i = 0; i < this.writer.trailByteCount; i++)
this.writer.trailBytes[i] = this.buffer[trailOffset++];
}
return true;
}