static void GetBufferFlushComplete(IAsyncEventArgs completionState)
{
XmlStreamNodeWriter thisPtr = (XmlStreamNodeWriter)completionState.AsyncState;
GetBufferAsyncEventArgs getBufferState = (GetBufferAsyncEventArgs)thisPtr.flushBufferState.Arguments;
getBufferState.Result = getBufferState.Result ?? new GetBufferEventResult();
getBufferState.Result.Buffer = thisPtr.buffer;
getBufferState.Result.Offset = 0;
getBufferState.Complete(false, completionState.Exception);
}
internal AsyncCompletionResult GetBufferAsync(GetBufferAsyncEventArgs getBufferState)
{
Fx.Assert(getBufferState != null, "GetBufferAsyncEventArgs cannot be null.");
int count = getBufferState.Arguments.Count;
Fx.Assert(count >= 0 && count <= bufferLength, String.Empty);
int finalOffset = 0;
int bufferOffset = this.offset;
if (bufferOffset + count <= bufferLength)
{
finalOffset = bufferOffset;
}
else
{
if (onGetFlushComplete == null)
{
onGetFlushComplete = new AsyncEventArgsCallback(GetBufferFlushComplete);
}
if (flushBufferState == null)
{
this.flushBufferState = new AsyncEventArgs <object>();
}
this.flushBufferState.Set(onGetFlushComplete, getBufferState, this);
if (FlushBufferAsync(this.flushBufferState) == AsyncCompletionResult.Completed)
{
finalOffset = 0;
this.flushBufferState.Complete(true);
}
else
{
return(AsyncCompletionResult.Queued);
}
}
#if DEBUG
Fx.Assert(finalOffset + count <= bufferLength, "");
for (int i = 0; i < count; i++)
{
buffer[finalOffset + i] = (byte)'<';
}
#endif
//return the buffer and finalOffset;
getBufferState.Result = getBufferState.Result ?? new GetBufferEventResult();
getBufferState.Result.Buffer = this.buffer;
getBufferState.Result.Offset = finalOffset;
return(AsyncCompletionResult.Completed);
}
AsyncCompletionResult InternalWriteBase64TextAsync(AsyncEventArgs<XmlWriteBase64AsyncArguments> writerState)
{
GetBufferAsyncEventArgs bufferState = this.getBufferState;
GetBufferArgs bufferArgs = this.getBufferArgs;
XmlWriteBase64AsyncArguments writerArgs = writerState.Arguments;
if (bufferState == null)
{
// Need to initialize the cached getBufferState
// used to call GetBufferAsync() multiple times.
bufferState = new GetBufferAsyncEventArgs();
bufferArgs = new GetBufferArgs();
this.getBufferState = bufferState;
this.getBufferArgs = bufferArgs;
}
Base64Encoding encoding = XmlConverter.Base64Encoding;
while (writerArgs.Count >= 3)
{
int byteCount = Math.Min(bufferLength / 4 * 3, writerArgs.Count - writerArgs.Count % 3);
int charCount = byteCount / 3 * 4;
bufferArgs.Count = charCount;
bufferState.Set(onGetBufferComplete, bufferArgs, this);
if (writer.GetBufferAsync(bufferState) == AsyncCompletionResult.Completed)
{
GetBufferEventResult getbufferResult = bufferState.Result;
bufferState.Complete(true);
writer.Advance(encoding.GetChars(
writerArgs.Buffer,
writerArgs.Offset,
byteCount,
getbufferResult.Buffer,
getbufferResult.Offset));
writerArgs.Offset += byteCount;
writerArgs.Count -= byteCount;
}
else
{
return AsyncCompletionResult.Queued;
}
}
if (writerArgs.Count > 0)
{
bufferArgs.Count = 4;
bufferState.Set(onGetBufferComplete, bufferArgs, this);
if (writer.GetBufferAsync(bufferState) == AsyncCompletionResult.Completed)
{
GetBufferEventResult getbufferResult = bufferState.Result;
bufferState.Complete(true);
writer.Advance(encoding.GetChars(
writerArgs.Buffer,
writerArgs.Offset,
writerArgs.Count,
getbufferResult.Buffer,
getbufferResult.Offset));
}
else
{
return AsyncCompletionResult.Queued;
}
}
return AsyncCompletionResult.Completed;
}
AsyncCompletionResult InternalWriteBase64TextAsync(AsyncEventArgs <XmlWriteBase64AsyncArguments> writerState)
{
GetBufferAsyncEventArgs bufferState = this.getBufferState;
GetBufferArgs bufferArgs = this.getBufferArgs;
XmlWriteBase64AsyncArguments writerArgs = writerState.Arguments;
if (bufferState == null)
{
// Need to initialize the cached getBufferState
// used to call GetBufferAsync() multiple times.
bufferState = new GetBufferAsyncEventArgs();
bufferArgs = new GetBufferArgs();
this.getBufferState = bufferState;
this.getBufferArgs = bufferArgs;
}
Base64Encoding encoding = XmlConverter.Base64Encoding;
while (writerArgs.Count >= 3)
{
int byteCount = Math.Min(bufferLength / 4 * 3, writerArgs.Count - writerArgs.Count % 3);
int charCount = byteCount / 3 * 4;
bufferArgs.Count = charCount;
bufferState.Set(onGetBufferComplete, bufferArgs, this);
if (writer.GetBufferAsync(bufferState) == AsyncCompletionResult.Completed)
{
GetBufferEventResult getbufferResult = bufferState.Result;
bufferState.Complete(true);
writer.Advance(encoding.GetChars(
writerArgs.Buffer,
writerArgs.Offset,
byteCount,
getbufferResult.Buffer,
getbufferResult.Offset));
writerArgs.Offset += byteCount;
writerArgs.Count -= byteCount;
}
else
{
return(AsyncCompletionResult.Queued);
}
}
if (writerArgs.Count > 0)
{
bufferArgs.Count = 4;
bufferState.Set(onGetBufferComplete, bufferArgs, this);
if (writer.GetBufferAsync(bufferState) == AsyncCompletionResult.Completed)
{
GetBufferEventResult getbufferResult = bufferState.Result;
bufferState.Complete(true);
writer.Advance(encoding.GetChars(
writerArgs.Buffer,
writerArgs.Offset,
writerArgs.Count,
getbufferResult.Buffer,
getbufferResult.Offset));
}
else
{
return(AsyncCompletionResult.Queued);
}
}
return(AsyncCompletionResult.Completed);
}
