private void InitIncrementalRead(IncrementalReadDecoder decoder)
{
ResetAttributes();
decoder.Reset();
_incReadDecoder = decoder;
_incReadState = IncrementalReadState.Text;
_incReadDepth = 1;
_incReadLeftStartPos = _ps.charPos;
_incReadLeftEndPos = _ps.charPos;
_incReadLineInfo.Set(_ps.LineNo, _ps.LinePos);
_parsingFunction = ParsingFunction.InIncrementalRead;
}
public override int ReadContentAsBase64(byte[] buffer, int index, int count)
{
switch (state)
{
case State.Initial:
case State.EndOfFile:
case State.Closed:
case State.Error:
return(0);
case State.ClearNsAttributes:
case State.PopNamespaceScope:
switch (NodeType)
{
case XmlNodeType.Element:
throw CreateReadContentAsException("ReadContentAsBase64");
case XmlNodeType.EndElement:
return(0);
case XmlNodeType.Attribute:
if (curNsAttr != -1 && reader.CanReadBinaryContent)
{
CheckBuffer(buffer, index, count);
if (count == 0)
{
return(0);
}
if (nsIncReadOffset == 0)
{
// called first time on this ns attribute
if (binDecoder != null && binDecoder is Base64Decoder)
{
binDecoder.Reset();
}
else
{
binDecoder = new Base64Decoder();
}
}
if (nsIncReadOffset == curNode.value.Length)
{
return(0);
}
binDecoder.SetNextOutputBuffer(buffer, index, count);
nsIncReadOffset += binDecoder.Decode(curNode.value, nsIncReadOffset, curNode.value.Length - nsIncReadOffset);
return(binDecoder.DecodedCount);
}
goto case XmlNodeType.Text;
case XmlNodeType.Text:
Debug.Assert(AttributeCount > 0);
return(reader.ReadContentAsBase64(buffer, index, count));
default:
Debug.Assert(false);
return(0);
}
case State.Interactive:
state = State.ReadContentAsBase64;
goto case State.ReadContentAsBase64;
case State.ReadContentAsBase64:
int read = reader.ReadContentAsBase64(buffer, index, count);
if (read == 0)
{
state = State.Interactive;
ProcessNamespaces();
}
return(read);
case State.ReadContentAsBinHex:
case State.ReadElementContentAsBase64:
case State.ReadElementContentAsBinHex:
throw new InvalidOperationException(Res.GetString(Res.Xml_MixingBinaryContentMethods));
default:
Debug.Assert(false);
return(0);
}
}
