// Creates a duplicate of this node.
public override XmlNode CloneNode(bool deep)
{
Debug.Assert(OwnerDocument != null);
XmlEntityReference eref = OwnerDocument.CreateEntityReference(_name);
return(eref);
}
private XmlEntityReference LoadEntityReferenceNode(bool direct)
{
Debug.Assert(_reader.NodeType == XmlNodeType.EntityReference);
XmlEntityReference eref = direct ? new XmlEntityReference(_reader.Name, _doc) : _doc.CreateEntityReference(_reader.Name);
if (_reader.CanResolveEntity)
{
_reader.ResolveEntity();
while (_reader.Read() && _reader.NodeType != XmlNodeType.EndEntity)
{
XmlNode node = direct ? LoadNodeDirect() : LoadNode(false);
if (node != null)
{
eref.AppendChildForLoad(node, _doc);
}
}
// Code internally relies on the fact that an EntRef nodes has at least one child (even an empty text node). Ensure that this holds true,
// if the reader does not present any children for the ent-ref
if (eref.LastChild == null)
{
eref.AppendChildForLoad(_doc.CreateTextNode(string.Empty), _doc);
}
}
return(eref);
}
private void LoadEntityAttributeChildren(XmlNode parent)
{
while (reader.ReadAttributeValue())
{
switch (reader.NodeType)
{
case XmlNodeType.EndEntity:
// exit read loop
return;
case XmlNodeType.Text:
parent.AppendChild(new XmlText(reader.Value, this.doc));
break;
case XmlNodeType.EntityReference: {
XmlEntityReference eref = new XmlEntityReference(reader.LocalName, this.doc);
reader.ResolveEntity();
LoadEntityAttributeChildren(eref);
//what if eref doesn't have children at all? should we just put a Empty String text here?
if (eref.ChildNodes.Count == 0)
{
eref.AppendChild(new XmlText(""));
}
parent.AppendChild(eref);
break;
}
default:
throw new InvalidOperationException(Res.GetString(Res.Xdom_Load_NodeType) + reader.NodeType);
}
}
}
//The function is called when expanding the entity ref. ( inside XmlEntityReference.SetParent )
internal void ExpandEntityReference(XmlEntityReference eref)
{
//when the ent ref is not associated w/ an entity, append an empty string text node as child
_doc = eref.OwnerDocument;
bool bOrigLoadingState = _doc.IsLoading;
_doc.IsLoading = true;
switch (eref.Name)
{
case "lt":
eref.AppendChildForLoad(_doc.CreateTextNode("<"), _doc);
_doc.IsLoading = bOrigLoadingState;
return;
case "gt":
eref.AppendChildForLoad(_doc.CreateTextNode(">"), _doc);
_doc.IsLoading = bOrigLoadingState;
return;
case "amp":
eref.AppendChildForLoad(_doc.CreateTextNode("&"), _doc);
_doc.IsLoading = bOrigLoadingState;
return;
case "apos":
eref.AppendChildForLoad(_doc.CreateTextNode("'"), _doc);
_doc.IsLoading = bOrigLoadingState;
return;
case "quot":
eref.AppendChildForLoad(_doc.CreateTextNode("\""), _doc);
_doc.IsLoading = bOrigLoadingState;
return;
}
XmlNamedNodeMap entities = _doc.Entities;
foreach (XmlEntity ent in entities)
{
if (Ref.Equal(ent.Name, eref.Name))
{
ParsePartialContent(eref, EntitizeName(eref.Name), XmlNodeType.EntityReference);
return;
}
}
//no fit so far
if (!(_doc.ActualLoadingStatus))
{
eref.AppendChildForLoad(_doc.CreateTextNode(""), _doc);
_doc.IsLoading = bOrigLoadingState;
}
else
{
_doc.IsLoading = bOrigLoadingState;
throw new XmlException(SR.Xml_UndeclaredParEntity, eref.Name);
}
}
internal void ExpandEntityReference(XmlEntityReference eref)
{
this.doc = eref.OwnerDocument;
bool isLoading = this.doc.IsLoading;
this.doc.IsLoading = true;
switch (eref.Name)
{
case "lt":
eref.AppendChildForLoad(this.doc.CreateTextNode("<"), this.doc);
this.doc.IsLoading = isLoading;
return;
case "gt":
eref.AppendChildForLoad(this.doc.CreateTextNode(">"), this.doc);
this.doc.IsLoading = isLoading;
return;
case "amp":
eref.AppendChildForLoad(this.doc.CreateTextNode("&"), this.doc);
this.doc.IsLoading = isLoading;
return;
case "apos":
eref.AppendChildForLoad(this.doc.CreateTextNode("'"), this.doc);
this.doc.IsLoading = isLoading;
return;
case "quot":
eref.AppendChildForLoad(this.doc.CreateTextNode("\""), this.doc);
this.doc.IsLoading = isLoading;
return;
}
foreach (XmlEntity entity in this.doc.Entities)
{
if (Ref.Equal(entity.Name, eref.Name))
{
this.ParsePartialContent(eref, this.EntitizeName(eref.Name), XmlNodeType.EntityReference);
return;
}
}
if (!this.doc.ActualLoadingStatus)
{
eref.AppendChildForLoad(this.doc.CreateTextNode(""), this.doc);
this.doc.IsLoading = isLoading;
}
else
{
this.doc.IsLoading = isLoading;
throw new XmlException("Xml_UndeclaredParEntity", eref.Name);
}
}
internal void ExpandEntityReference(XmlEntityReference eref)
{
this.doc = eref.OwnerDocument;
bool isLoading = this.doc.IsLoading;
this.doc.IsLoading = true;
switch (eref.Name)
{
case "lt":
eref.AppendChildForLoad(this.doc.CreateTextNode("<"), this.doc);
this.doc.IsLoading = isLoading;
return;
case "gt":
eref.AppendChildForLoad(this.doc.CreateTextNode(">"), this.doc);
this.doc.IsLoading = isLoading;
return;
case "amp":
eref.AppendChildForLoad(this.doc.CreateTextNode("&"), this.doc);
this.doc.IsLoading = isLoading;
return;
case "apos":
eref.AppendChildForLoad(this.doc.CreateTextNode("'"), this.doc);
this.doc.IsLoading = isLoading;
return;
case "quot":
eref.AppendChildForLoad(this.doc.CreateTextNode("\""), this.doc);
this.doc.IsLoading = isLoading;
return;
}
foreach (XmlEntity entity in this.doc.Entities)
{
if (Ref.Equal(entity.Name, eref.Name))
{
this.ParsePartialContent(eref, this.EntitizeName(eref.Name), XmlNodeType.EntityReference);
return;
}
}
if (!this.doc.ActualLoadingStatus)
{
eref.AppendChildForLoad(this.doc.CreateTextNode(""), this.doc);
this.doc.IsLoading = isLoading;
}
else
{
this.doc.IsLoading = isLoading;
throw new XmlException("Xml_UndeclaredParEntity", eref.Name);
}
}
private XmlEntityReference LoadEntityReferenceNode()
{
Debug.Assert(reader.NodeType == XmlNodeType.EntityReference);
XmlEntityReference eref = doc.CreateEntityReference(reader.Name);
if (reader.CanResolveEntity)
{
reader.ResolveEntity();
LoadChildren(eref);
// Code internally relies on the fact that an EntRef nodes has at least one child (even an empty text node). Ensure that this holds true,
// if the reader does not present any children for the ent-ref
if (eref.LastChild == null)
{
eref.AppendChild(doc.CreateTextNode(""));
}
}
return(eref);
}
private XmlEntityReference LoadEntityReferenceNode(bool direct)
{
XmlEntityReference reference = direct ? new XmlEntityReference(this.reader.Name, this.doc) : this.doc.CreateEntityReference(this.reader.Name);
if (this.reader.CanResolveEntity)
{
this.reader.ResolveEntity();
while (this.reader.Read() && (this.reader.NodeType != XmlNodeType.EndEntity))
{
XmlNode newChild = direct ? this.LoadNodeDirect() : this.LoadNode(false);
if (newChild != null)
{
reference.AppendChildForLoad(newChild, this.doc);
}
}
if (reference.LastChild == null)
{
reference.AppendChildForLoad(this.doc.CreateTextNode(string.Empty), this.doc);
}
}
return(reference);
}
//The function is called when expanding the entity ref. ( inside XmlEntityReference.SetParent )
internal void ExpandEntityReference(XmlEntityReference eref)
{
//when the ent ref is not associated w/ an entity, append an empty string text node as child
_doc = eref.OwnerDocument;
bool bOrigLoadingState = _doc.IsLoading;
_doc.IsLoading = true;
switch (eref.Name)
{
case "lt":
eref.AppendChildForLoad(_doc.CreateTextNode("<"), _doc);
_doc.IsLoading = bOrigLoadingState;
return;
case "gt":
eref.AppendChildForLoad(_doc.CreateTextNode(">"), _doc);
_doc.IsLoading = bOrigLoadingState;
return;
case "amp":
eref.AppendChildForLoad(_doc.CreateTextNode("&"), _doc);
_doc.IsLoading = bOrigLoadingState;
return;
case "apos":
eref.AppendChildForLoad(_doc.CreateTextNode("'"), _doc);
_doc.IsLoading = bOrigLoadingState;
return;
case "quot":
eref.AppendChildForLoad(_doc.CreateTextNode("\""), _doc);
_doc.IsLoading = bOrigLoadingState;
return;
}
XmlNamedNodeMap entities = _doc.Entities;
foreach (XmlEntity ent in entities)
{
if (Ref.Equal(ent.Name, eref.Name))
{
ParsePartialContent(eref, EntitizeName(eref.Name), XmlNodeType.EntityReference);
return;
}
}
//no fit so far
if (!(_doc.ActualLoadingStatus))
{
eref.AppendChildForLoad(_doc.CreateTextNode(""), _doc);
_doc.IsLoading = bOrigLoadingState;
}
else
{
_doc.IsLoading = bOrigLoadingState;
throw new XmlException(SR.Format(SR.Xml_UndeclaredParEntity, eref.Name));
}
}
private void LoadEntityAttributeChildren( XmlNode parent ) {
while (reader.ReadAttributeValue()) {
switch (reader.NodeType) {
case XmlNodeType.EndEntity:
// exit read loop
return;
case XmlNodeType.Text:
parent.AppendChild( new XmlText( reader.Value, this.doc ) );
break;
case XmlNodeType.EntityReference: {
XmlEntityReference eref = new XmlEntityReference( reader.LocalName, this.doc );
reader.ResolveEntity();
LoadEntityAttributeChildren( eref );
//what if eref doesn't have children at all? should we just put a Empty String text here?
if ( eref.ChildNodes.Count == 0 )
eref.AppendChild( new XmlText("") );
parent.AppendChild( eref );
break;
}
default:
throw new InvalidOperationException(Res.GetString(Res.Xdom_Load_NodeType) + reader.NodeType);
}
}
}
private XmlNode LoadEntityChildren() {
XmlNode node = null;
// We do not use creator functions on XmlDocument, b/c we do not want to let users extend the nodes that are children of entity nodes (also, if we do
// this, XmlDataDocument will have a problem, b/c they do not know that those nodes should not be mapped).
switch (reader.NodeType) {
case XmlNodeType.EndElement:
case XmlNodeType.EndEntity:
break;
case XmlNodeType.Element: {
bool fEmptyElement = reader.IsEmptyElement;
XmlElement element = new XmlElement( reader.Prefix, reader.LocalName, reader.NamespaceURI, this.doc );
element.IsEmpty = fEmptyElement;
while(reader.MoveToNextAttribute()) {
XmlAttribute attr = (XmlAttribute) LoadEntityChildren();
element.Attributes.Append( attr );
}
// recursively load all children.
if (! fEmptyElement)
LoadEntityChildren( element );
node = element;
break;
}
case XmlNodeType.Attribute:
if (reader.IsDefault) {
XmlUnspecifiedAttribute attr = new XmlUnspecifiedAttribute( reader.Prefix, reader.LocalName, reader.NamespaceURI, this.doc );
LoadEntityAttributeChildren( attr );
attr.SetSpecified( false );
node = attr;
}
else {
XmlAttribute attr = new XmlAttribute( reader.Prefix, reader.LocalName, reader.NamespaceURI, this.doc );
LoadEntityAttributeChildren( attr );
node = attr;
}
break;
case XmlNodeType.SignificantWhitespace:
node = new XmlSignificantWhitespace( reader.Value, this.doc );
break;
case XmlNodeType.Whitespace:
if ( preserveWhitespace )
node = new XmlWhitespace( reader.Value, this.doc );
else {
// if preserveWhitespace is false skip all subsequent WS nodes and position on the first non-WS node
do {
if (! reader.Read() )
return null;
} while (reader.NodeType == XmlNodeType.Whitespace);
node = LoadEntityChildren(); // Skip WS node if preserveWhitespace is false
}
break;
case XmlNodeType.Text:
node = new XmlText( reader.Value, this.doc );
break;
case XmlNodeType.CDATA:
node = new XmlCDataSection( reader.Value, this.doc );
break;
case XmlNodeType.EntityReference:{
XmlEntityReference eref = new XmlEntityReference( reader.Name, this.doc );
if ( reader.CanResolveEntity ) {
reader.ResolveEntity();
LoadEntityChildren( eref );
//what if eref doesn't have children at all? should we just put a Empty String text here?
if ( eref.ChildNodes.Count == 0 )
eref.AppendChild( new XmlText("") );
}
node = eref;
break;
}
case XmlNodeType.ProcessingInstruction:
node = new XmlProcessingInstruction( reader.Name, reader.Value, this.doc );
break;
case XmlNodeType.Comment:
node = new XmlComment( reader.Value, this.doc );
break;
default:
throw new InvalidOperationException(string.Format(Res.GetString(Res.Xdom_Load_NodeType),reader.NodeType.ToString()));
}
return node;
}
internal DOMEntityReference(XmlEntityReference/*!*/ xmlEntityReference)
: base(ScriptContext.CurrentContext, true)
{
this.XmlEntityReference = xmlEntityReference;
}
private XmlNode LoadEntityChildren()
{
XmlNode node = null;
// We do not use creator functions on XmlDocument, b/c we do not want to let users extend the nodes that are children of entity nodes (also, if we do
// this, XmlDataDocument will have a problem, b/c they do not know that those nodes should not be mapped).
switch (reader.NodeType)
{
case XmlNodeType.EndElement:
case XmlNodeType.EndEntity:
break;
case XmlNodeType.Element: {
bool fEmptyElement = reader.IsEmptyElement;
XmlElement element = new XmlElement(reader.Prefix, reader.LocalName, reader.NamespaceURI, this.doc);
element.IsEmpty = fEmptyElement;
while (reader.MoveToNextAttribute())
{
XmlAttribute attr = (XmlAttribute)LoadEntityChildren();
element.Attributes.Append(attr);
}
// recursively load all children.
if (!fEmptyElement)
{
LoadEntityChildren(element);
}
node = element;
break;
}
case XmlNodeType.Attribute:
if (reader.IsDefault)
{
XmlUnspecifiedAttribute attr = new XmlUnspecifiedAttribute(reader.Prefix, reader.LocalName, reader.NamespaceURI, this.doc);
LoadEntityAttributeChildren(attr);
attr.SetSpecified(false);
node = attr;
}
else
{
XmlAttribute attr = new XmlAttribute(reader.Prefix, reader.LocalName, reader.NamespaceURI, this.doc);
LoadEntityAttributeChildren(attr);
node = attr;
}
break;
case XmlNodeType.SignificantWhitespace:
node = new XmlSignificantWhitespace(reader.Value, this.doc);
break;
case XmlNodeType.Whitespace:
if (preserveWhitespace)
{
node = new XmlWhitespace(reader.Value, this.doc);
}
else
{
// if preserveWhitespace is false skip all subsequent WS nodes and position on the first non-WS node
do
{
if (!reader.Read())
{
return(null);
}
} while (reader.NodeType == XmlNodeType.Whitespace);
node = LoadEntityChildren(); // Skip WS node if preserveWhitespace is false
}
break;
case XmlNodeType.Text:
node = new XmlText(reader.Value, this.doc);
break;
case XmlNodeType.CDATA:
node = new XmlCDataSection(reader.Value, this.doc);
break;
case XmlNodeType.EntityReference: {
XmlEntityReference eref = new XmlEntityReference(reader.Name, this.doc);
if (reader.CanResolveEntity)
{
reader.ResolveEntity();
LoadEntityChildren(eref);
//what if eref doesn't have children at all? should we just put a Empty String text here?
if (eref.ChildNodes.Count == 0)
{
eref.AppendChild(new XmlText(""));
}
}
node = eref;
break;
}
case XmlNodeType.ProcessingInstruction:
node = new XmlProcessingInstruction(reader.Name, reader.Value, this.doc);
break;
case XmlNodeType.Comment:
node = new XmlComment(reader.Value, this.doc);
break;
default:
throw new InvalidOperationException(string.Format(Res.GetString(Res.Xdom_Load_NodeType), reader.NodeType.ToString()));
}
return(node);
}
// Used by the ReadNode method for recursively building a DOM subtree.
internal XmlNode ReadNodeInternal(XmlReader r)
{
switch (r.NodeType)
{
case XmlNodeType.Attribute:
{
// create the attribute
XmlAttribute att = CreateAttribute
(r.Prefix, r.LocalName, r.NamespaceURI);
// read and append the children
ReadChildren(r, att);
// return the attribute
return(att);
}
// Not reached.
case XmlNodeType.CDATA:
{
// create the character data section
XmlCDataSection cdata = CreateCDataSection(r.Value);
// advance the reader to the next node
r.Read();
// return the character data section
return(cdata);
}
// Not reached.
case XmlNodeType.Comment:
{
// create the comment
XmlComment comment = CreateComment(r.Value);
// advance the reader to the next node
r.Read();
// return the comment
return(comment);
}
// Not reached.
case XmlNodeType.DocumentType:
{
// create the document type
XmlDocumentType doctype = CreateDocumentType
(r.Name, r["PUBLIC"], r["SYSTEM"], r.Value);
// advance the reader to the next node
r.Read();
// return the document type
return(doctype);
}
// Not reached.
case XmlNodeType.Element:
{
// create the element
XmlElement elem = CreateElement
(r.Prefix, r.LocalName, r.NamespaceURI);
bool isEmptyElement = r.IsEmptyElement;
// read the attributes
while (r.MoveToNextAttribute())
{
XmlAttribute att = (XmlAttribute)ReadNodeInternal(r);
elem.SetAttributeNode(att);
}
r.MoveToElement();
// return now if there are no children
if (isEmptyElement)
{
// advance the reader to the next node
r.Read();
// return the empty element
return(elem);
}
elem.IsEmpty = isEmptyElement;
// read and append the children
ReadChildren(r, elem);
// return the element
return(elem);
}
// Not reached.
case XmlNodeType.DocumentFragment:
case XmlNodeType.EndElement:
case XmlNodeType.EndEntity:
case XmlNodeType.Entity:
case XmlNodeType.Notation:
{
// TODO
// advance the reader to the next node
r.Read();
// nothing to return
return(null);
}
// Not reached.
case XmlNodeType.EntityReference:
{
// create the entity reference
XmlEntityReference er = CreateEntityReference(r.Name);
// advance the reader to the next node
r.Read();
// return the entity reference
return(er);
}
// Not reached.
case XmlNodeType.ProcessingInstruction:
{
// create the processing instruction
XmlProcessingInstruction pi = CreateProcessingInstruction
(r.Name, r.Value);
// advance the reader to the next node
r.Read();
// return the processing instruction
return(pi);
}
// Not reached.
case XmlNodeType.SignificantWhitespace:
{
// create the significant whitespace
XmlSignificantWhitespace sws = CreateSignificantWhitespace
(r.Value);
// advance the reader to the next node
r.Read();
// return the significant whitespace
return(sws);
}
// Not reached.
case XmlNodeType.Text:
{
// create the text
XmlText text = CreateTextNode(r.Value);
// advance the reader to the next node
r.Read();
// return the text
return(text);
}
// Not reached.
case XmlNodeType.Whitespace:
{
// if whitespace preservation is off, skip whitespace
if (!preserveWhitespace)
{
while (r.Read())
{
if (r.NodeType != XmlNodeType.Whitespace)
{
return(null);
}
}
return(null);
}
// create the whitespace
XmlWhitespace ws = CreateWhitespace(r.Value);
// advance the reader to the next node
r.Read();
// return the whitespace
return(ws);
}
// Not reached.
case XmlNodeType.XmlDeclaration:
{
// set up the defaults
String e = String.Empty;
String s = String.Empty;
// read the version
r.MoveToNextAttribute();
// read the optional attributes
if (r.MoveToNextAttribute())
{
if (r.Name == "encoding")
{
e = r.Value;
if (r.MoveToNextAttribute())
{
s = r.Value;
}
}
else
{
s = r.Value;
}
}
// create the xml declaration
XmlDeclaration xml = CreateXmlDeclaration("1.0", e, s);
// advance the reader to the next node
r.Read();
// return the xml declaration
return(xml);
}
// Not reached.
default:
{
throw new InvalidOperationException(/* TODO */);
}
// Not reached.
}
}
