internal static void BuildSubtree(XmlReader reader, XmlWriter writer)
{
// important (perf) string literal...
string xmlnsUri = XmlConst.ReservedNsXmlNs; // http://www.w3.org/2000/xmlns/
ReadState readState = reader.ReadState;
if (readState != ReadState.Initial
&& readState != ReadState.Interactive)
{
throw new ArgumentException(SR.Xml_InvalidOperation, "reader");
}
int level = 0;
if (readState == ReadState.Initial)
{
if (!reader.Read())
return;
level++; // if start in initial, read everything (not just first)
}
do
{
switch (reader.NodeType)
{
case XmlNodeType.Element:
writer.WriteStartElement(reader.Prefix, reader.LocalName, reader.NamespaceURI);
bool isEmptyElement = reader.IsEmptyElement;
while (reader.MoveToNextAttribute())
{
if ((object)reader.NamespaceURI == (object)xmlnsUri)
{
if (reader.Prefix.Length == 0)
{
// Default namespace declaration "xmlns"
Debug.Assert(reader.LocalName == "xmlns");
writer.WriteAttributeString("", "xmlns", xmlnsUri, reader.Value);
}
else
{
Debug.Assert(reader.Prefix == "xmlns");
writer.WriteAttributeString("xmlns", reader.LocalName, xmlnsUri, reader.Value);
}
}
else
{
writer.WriteStartAttribute(reader.Prefix, reader.LocalName, reader.NamespaceURI);
writer.WriteString(reader.Value);
writer.WriteEndAttribute();
}
}
reader.MoveToElement();
if (isEmptyElement)
{
// there might still be a value, if there is a default value specified in the schema
writer.WriteEndElement();
}
else
{
level++;
}
break;
case XmlNodeType.EndElement:
writer.WriteFullEndElement();
//should not read beyond the level of the reader's original position.
level--;
break;
case XmlNodeType.Text:
case XmlNodeType.CDATA:
writer.WriteString(reader.Value);
break;
case XmlNodeType.SignificantWhitespace:
case XmlNodeType.Whitespace:
writer.WriteString(reader.Value);
break;
case XmlNodeType.Comment:
writer.WriteComment(reader.Value);
break;
case XmlNodeType.ProcessingInstruction:
writer.WriteProcessingInstruction(reader.LocalName, reader.Value);
break;
case XmlNodeType.EntityReference:
reader.ResolveEntity();
break;
case XmlNodeType.EndEntity:
case XmlNodeType.None:
case XmlNodeType.DocumentType:
case XmlNodeType.XmlDeclaration:
break;
case XmlNodeType.Attribute:
if ((object)reader.NamespaceURI == (object)xmlnsUri)
{
if (reader.Prefix.Length == 0)
{
// Default namespace declaration "xmlns"
Debug.Assert(reader.LocalName == "xmlns");
writer.WriteAttributeString("", "xmlns", xmlnsUri, reader.Value);
}
else
{
Debug.Assert(reader.Prefix == "xmlns");
writer.WriteAttributeString("xmlns", reader.LocalName, xmlnsUri, reader.Value);
}
}
else
{
writer.WriteStartAttribute(reader.Prefix, reader.LocalName, reader.NamespaceURI);
writer.WriteString(reader.Value);
writer.WriteEndAttribute();
}
break;
}
}
while (reader.Read() && (level > 0));
}
private void ReadElementFrom(XmlReader r, LoadOptions o)
{
if (r.ReadState != ReadState.Interactive) throw new InvalidOperationException(SR.InvalidOperation_ExpectedInteractive);
name = XNamespace.Get(r.NamespaceURI).GetName(r.LocalName);
if ((o & LoadOptions.SetBaseUri) != 0)
{
string baseUri = r.BaseURI;
if (!string.IsNullOrEmpty(baseUri))
{
SetBaseUri(baseUri);
}
}
IXmlLineInfo li = null;
if ((o & LoadOptions.SetLineInfo) != 0)
{
li = r as IXmlLineInfo;
if (li != null && li.HasLineInfo())
{
SetLineInfo(li.LineNumber, li.LinePosition);
}
}
if (r.MoveToFirstAttribute())
{
do
{
XAttribute a = new XAttribute(XNamespace.Get(r.Prefix.Length == 0 ? string.Empty : r.NamespaceURI).GetName(r.LocalName), r.Value);
if (li != null && li.HasLineInfo())
{
a.SetLineInfo(li.LineNumber, li.LinePosition);
}
AppendAttributeSkipNotify(a);
} while (r.MoveToNextAttribute());
r.MoveToElement();
}
if (!r.IsEmptyElement)
{
r.Read();
ReadContentFrom(r, o);
}
r.Read();
}