public override async Task <int> ReadElementContentAsBase64Async(byte[] buffer, int index, int count)
{
// check arguments
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if (count < 0)
{
throw new ArgumentOutOfRangeException("count");
}
if (index < 0)
{
throw new ArgumentOutOfRangeException("index");
}
if (buffer.Length - index < count)
{
throw new ArgumentOutOfRangeException("count");
}
if (ReadState != ReadState.Interactive)
{
return(0);
}
if (_state != State.InReadBinary)
{
// forward ReadBase64Chunk calls into the base (wrapped) reader if possible, i.e. if it can read binary and we
// should not check characters
if (base.CanReadBinaryContent && (!_checkCharacters))
{
_readBinaryHelper = null;
_state = State.InReadBinary;
return(await base.ReadElementContentAsBase64Async(buffer, index, count).ConfigureAwait(false));
}
// the wrapped reader cannot read chunks or we are on an element where we should check characters or ignore white spaces
else
{
_readBinaryHelper = ReadContentAsBinaryHelper.CreateOrReset(_readBinaryHelper, this);
}
}
else
{
// forward calls into wrapped reader
if (_readBinaryHelper == null)
{
return(await base.ReadElementContentAsBase64Async(buffer, index, count).ConfigureAwait(false));
}
}
// turn off InReadBinary state in order to have a normal Read() behavior when called from readBinaryHelper
_state = State.Interactive;
// call to the helper
int readCount = await _readBinaryHelper.ReadElementContentAsBase64Async(buffer, index, count).ConfigureAwait(false);
// turn on InReadBinary in again and return
_state = State.InReadBinary;
return(readCount);
}
public override async Task <int> ReadElementContentAsBinHexAsync(byte[] buffer, int index, int count)
{
if (ReadState != ReadState.Interactive)
{
return(0);
}
// init ReadContentAsBinaryHelper when called first time
if (_validationState != ValidatingReaderState.OnReadBinaryContent)
{
_readBinaryHelper = ReadContentAsBinaryHelper.CreateOrReset(_readBinaryHelper, this);
_savedState = _validationState;
}
// restore original state in order to have a normal Read() behavior when called from readBinaryHelper
_validationState = _savedState;
// call to the helper
int readCount = await _readBinaryHelper.ReadElementContentAsBinHexAsync(buffer, index, count).ConfigureAwait(false);
// set OnReadBinaryContent state again and return
_savedState = _validationState;
_validationState = ValidatingReaderState.OnReadBinaryContent;
return(readCount);
}
// Static methods
internal static ReadContentAsBinaryHelper CreateOrReset(ReadContentAsBinaryHelper helper, XmlReader reader)
{
if (helper == null)
{
return(new ReadContentAsBinaryHelper(reader));
}
else
{
helper.Reset();
return(helper);
}
}
public override int ReadContentAsBinHex(byte[] buffer, int index, int count)
{
if (ReadState != ReadState.Interactive)
{
return(0);
}
if (_state != State.InReadBinary)
{
// forward ReadBinHexChunk calls into the base (wrapped) reader if possible, i.e. if it can read chunks and we
// should not check characters
if (base.CanReadBinaryContent && (!_checkCharacters))
{
_readBinaryHelper = null;
_state = State.InReadBinary;
return(base.ReadContentAsBinHex(buffer, index, count));
}
// the wrapped reader cannot read chunks or we are on an element where we should check characters or ignore white spaces
else
{
_readBinaryHelper = ReadContentAsBinaryHelper.CreateOrReset(_readBinaryHelper, this);
}
}
else
{
// forward calls into wrapped reader
if (_readBinaryHelper == null)
{
return(base.ReadContentAsBinHex(buffer, index, count));
}
}
// turn off InReadBinary state in order to have a normal Read() behavior when called from readBinaryHelper
_state = State.Interactive;
// call to the helper
int readCount = _readBinaryHelper.ReadContentAsBinHex(buffer, index, count);
// turn on InReadBinary in again and return
_state = State.InReadBinary;
return(readCount);
}
public override int ReadElementContentAsBinHex(byte[] buffer, int index, int count)
{
if (ReadState != ReadState.Interactive)
{
return(0);
}
// init ReadChunkHelper when called first time
if (_parsingFunction != ParsingFunction.InReadBinaryContent)
{
_readBinaryHelper = ReadContentAsBinaryHelper.CreateOrReset(_readBinaryHelper, _outerReader);
}
// set parsingFunction to Read state in order to have a normal Read() behavior when called from readBinaryHelper
_parsingFunction = ParsingFunction.Read;
// call to the helper
int readCount = _readBinaryHelper.ReadElementContentAsBinHex(buffer, index, count);
// setup parsingFunction
_parsingFunction = ParsingFunction.InReadBinaryContent;
return(readCount);
}
