void DoResolveEntity()
{
if (entity != null)
{
entity.ResolveEntity();
}
else
{
if (source.NodeType != XmlNodeType.EntityReference)
{
throw new InvalidOperationException("The current node is not an Entity Reference");
}
if (ParserContext.Dtd == null)
{
throw new XmlException(this as IXmlLineInfo, this.BaseURI, String.Format("Cannot resolve entity without DTD: '{0}'", source.Name));
}
XmlReader entReader = ParserContext.Dtd.GenerateEntityContentReader(
source.Name, ParserContext);
if (entReader == null)
{
throw new XmlException(this as IXmlLineInfo, this.BaseURI, String.Format("Reference to undeclared entity '{0}'.", source.Name));
}
entity = new EntityResolvingXmlReader(
entReader, inside_attr);
entity.CopyProperties(this);
}
}
public override void MoveToAttribute(int i)
{
if (entity != null && entity_inside_attr)
{
entity.Close();
entity = null;
}
Current.MoveToAttribute(i);
inside_attr = true;
}
public override void MoveToAttribute(int i)
{
if (this.entity != null && this.entity_inside_attr)
{
this.entity.Close();
this.entity = null;
}
this.Current.MoveToAttribute(i);
this.inside_attr = true;
}
public override bool MoveToElement()
{
if (this.entity != null && this.entity_inside_attr)
{
this.entity.Close();
this.entity = null;
}
if (!this.Current.MoveToElement())
{
return(false);
}
this.inside_attr = false;
return(true);
}
public override bool ReadAttributeValue()
{
if (this.entity != null && this.entity_inside_attr)
{
if (!this.entity.EOF)
{
this.entity.Read();
return(true);
}
this.entity.Close();
this.entity = null;
}
return(this.Current.ReadAttributeValue());
}
public override bool MoveToElement()
{
if (entity != null && entity_inside_attr)
{
entity.Close();
entity = null;
}
if (!Current.MoveToElement())
{
return(false);
}
inside_attr = false;
return(true);
}
public override bool Read()
{
if (do_resolve)
{
DoResolveEntity();
do_resolve = false;
}
inside_attr = false;
if (entity != null && (entity_inside_attr || entity.EOF))
{
entity.Close();
entity = null;
}
if (entity != null)
{
if (entity.Read())
{
return(true);
}
if (EntityHandling == EntityHandling.ExpandEntities)
{
// EndEntity must be skipped
entity.Close();
entity = null;
return(Read());
}
else
{
return(true); // either success or EndEntity
}
}
else
{
if (!source.Read())
{
return(false);
}
if (EntityHandling == EntityHandling.ExpandEntities &&
source.NodeType == XmlNodeType.EntityReference)
{
ResolveEntity();
return(Read());
}
return(true);
}
}
public override bool ReadAttributeValue()
{
if (entity != null && entity_inside_attr)
{
if (entity.EOF)
{
entity.Close();
entity = null;
}
else
{
entity.Read();
return(true); // either success or EndEntity
}
}
return(Current.ReadAttributeValue());
}
public override bool MoveToNextAttribute()
{
if (this.entity != null && !this.entity_inside_attr)
{
return(this.entity.MoveToNextAttribute());
}
if (!this.source.MoveToNextAttribute())
{
return(false);
}
if (this.entity != null && this.entity_inside_attr)
{
this.entity.Close();
this.entity = null;
}
this.inside_attr = true;
return(true);
}
public override bool MoveToAttribute(string localName, string namespaceName)
{
if (entity != null && !entity_inside_attr)
{
return(entity.MoveToAttribute(localName, namespaceName));
}
if (!source.MoveToAttribute(localName, namespaceName))
{
return(false);
}
if (entity != null && entity_inside_attr)
{
entity.Close();
entity = null;
}
inside_attr = true;
return(true);
}
public override bool MoveToNextAttribute()
{
if (entity != null && !entity_inside_attr)
{
return(entity.MoveToNextAttribute());
}
if (!source.MoveToNextAttribute())
{
return(false);
}
if (entity != null && entity_inside_attr)
{
entity.Close();
entity = null;
}
inside_attr = true;
return(true);
}
public override bool Read()
{
if (this.do_resolve)
{
this.DoResolveEntity();
this.do_resolve = false;
}
this.inside_attr = false;
if (this.entity != null && (this.entity_inside_attr || this.entity.EOF))
{
this.entity.Close();
this.entity = null;
}
if (this.entity != null)
{
if (this.entity.Read())
{
return(true);
}
if (this.EntityHandling == EntityHandling.ExpandEntities)
{
this.entity.Close();
this.entity = null;
return(this.Read());
}
return(true);
}
else
{
if (!this.source.Read())
{
return(false);
}
if (this.EntityHandling == EntityHandling.ExpandEntities && this.source.NodeType == XmlNodeType.EntityReference)
{
this.ResolveEntity();
return(this.Read());
}
return(true);
}
}
// non-overrides
private void CopyProperties (EntityResolvingXmlReader other)
{
context = other.context;
resolver = other.resolver;
entity_handling = other.entity_handling;
}
public override bool MoveToAttribute (string localName, string namespaceName)
{
if (entity != null && !entity_inside_attr)
return entity.MoveToAttribute (localName, namespaceName);
if (!source.MoveToAttribute (localName, namespaceName))
return false;
if (entity != null && entity_inside_attr) {
entity.Close ();
entity = null;
}
inside_attr = true;
return true;
}
public override bool MoveToElement ()
{
if (entity != null && entity_inside_attr) {
entity.Close ();
entity = null;
}
if (!Current.MoveToElement ())
return false;
inside_attr = false;
return true;
}
public override bool MoveToNextAttribute ()
{
if (entity != null && !entity_inside_attr)
return entity.MoveToNextAttribute ();
if (!source.MoveToNextAttribute ())
return false;
if (entity != null && entity_inside_attr) {
entity.Close ();
entity = null;
}
inside_attr = true;
return true;
}
public override bool Read ()
{
if (do_resolve) {
DoResolveEntity ();
do_resolve = false;
}
inside_attr = false;
if (entity != null && (entity_inside_attr || entity.EOF)) {
entity.Close ();
entity = null;
}
if (entity != null) {
if (entity.Read ())
return true;
if (EntityHandling == EntityHandling.ExpandEntities) {
// EndEntity must be skipped
entity.Close ();
entity = null;
return Read ();
}
else
return true; // either success or EndEntity
}
else {
if (!source.Read ())
return false;
if (EntityHandling == EntityHandling.ExpandEntities
&& source.NodeType == XmlNodeType.EntityReference) {
ResolveEntity ();
return Read ();
}
return true;
}
}
// non-overrides
private void CopyProperties(EntityResolvingXmlReader other)
{
context = other.context;
resolver = other.resolver;
entity_handling = other.entity_handling;
}
public override bool ReadAttributeValue ()
{
if (entity != null && entity_inside_attr) {
if (entity.EOF) {
entity.Close ();
entity = null;
}
else {
entity.Read ();
return true; // either success or EndEntity
}
}
return Current.ReadAttributeValue ();
}
public override void MoveToAttribute (int i)
{
if (entity != null && entity_inside_attr) {
entity.Close ();
entity = null;
}
Current.MoveToAttribute (i);
inside_attr = true;
}
void DoResolveEntity ()
{
if (entity != null)
entity.ResolveEntity ();
else {
if (source.NodeType != XmlNodeType.EntityReference)
throw new InvalidOperationException ("The current node is not an Entity Reference");
if (ParserContext.Dtd == null)
throw new XmlException (this as IXmlLineInfo, this.BaseURI, String.Format ("Cannot resolve entity without DTD: '{0}'", source.Name));
XmlReader entReader = ParserContext.Dtd.GenerateEntityContentReader (
source.Name, ParserContext);
if (entReader == null)
throw new XmlException (this as IXmlLineInfo, this.BaseURI, String.Format ("Reference to undeclared entity '{0}'.", source.Name));
entity = new EntityResolvingXmlReader (
entReader, inside_attr);
entity.CopyProperties (this);
}
}
