/// <summary>
/// Override Read in order to search for strippable whitespace, to concatenate adjacent text nodes, and to
/// resolve entities.
/// </summary>
public override bool Read()
{
string?ws = null;
// Clear text value
_val = null;
while (base.Read())
{
switch (base.NodeType)
{
case XmlNodeType.Element:
// Push boolean indicating whether whitespace children of this element should be stripped
if (!base.IsEmptyElement)
{
_stkStrip.PushBit(_shouldStrip);
// Strip if rules say we should and we're not within the scope of xml:space="preserve"
_shouldStrip = _wsRules.ShouldStripSpace(base.LocalName, base.NamespaceURI) && (base.XmlSpace != XmlSpace.Preserve);
}
break;
case XmlNodeType.EndElement:
// Restore parent shouldStrip setting
_shouldStrip = _stkStrip.PopBit();
break;
case XmlNodeType.Text:
case XmlNodeType.CDATA:
// If preserving adjacent text, don't perform any further checks
if (_preserveAdjacent)
{
return(true);
}
if (_shouldStrip)
{
// Reader may report whitespace as Text or CDATA
if (XmlCharType.IsOnlyWhitespace(base.Value))
{
goto case XmlNodeType.Whitespace;
}
// If whitespace was cached, then prepend it to text or CDATA value
if (ws != null)
{
_val = string.Concat(ws, base.Value);
}
// Preserve adjacent whitespace
_preserveAdjacent = true;
return(true);
}
break;
case XmlNodeType.Whitespace:
case XmlNodeType.SignificantWhitespace:
// If preserving adjacent text, don't perform any further checks
if (_preserveAdjacent)
{
return(true);
}
if (_shouldStrip)
{
// Save whitespace until it can be determined whether it will be stripped
ws = ws == null ?
base.Value :
string.Concat(ws, base.Value);
// Read next event
continue;
}
break;
case XmlNodeType.EndEntity:
// Read next event
continue;
}
// No longer preserve adjacent space
_preserveAdjacent = false;
return(true);
}
return(false);
}
