internal static XmlNodeList SelectNodes(
XmlNode rootNode,
XmlNode currentParentNode,
string pathDescriptor)
{
switch (pathDescriptor[0])
{
case '*':
if (pathDescriptor.Length == 1)
{
return(PathDescriptorParser.SelectAllChildren(currentParentNode));
}
PathDescriptorParser.OnInvalidExpression(pathDescriptor);
return((XmlNodeList)null);
case '/':
return(PathDescriptorParser.SelectAbsoluteNodes(rootNode, pathDescriptor));
case '@':
if (pathDescriptor.Length < 2)
{
PathDescriptorParser.OnInvalidExpression(pathDescriptor);
}
return(pathDescriptor[1] == '*' ? PathDescriptorParser.SelectAllAttributes(currentParentNode) : PathDescriptorParser.SelectAttributes(currentParentNode, pathDescriptor));
default:
return(PathDescriptorParser.SelectChildNodes(currentParentNode, pathDescriptor, 0));
}
}
private static XmlNodeList SelectAbsoluteNodes(XmlNode rootNode, string path)
{
var pos = 1;
var xmlNode = rootNode;
int startPos;
while (true)
{
startPos = pos;
var childNodes = xmlNode.ChildNodes;
var num = PathDescriptorParser.ReadPosition(path, ref pos);
if (pos == path.Length || path[pos] == '/')
{
if (childNodes.Count == 0 || num < 0 || num > childNodes.Count)
{
PathDescriptorParser.OnNoMatchingNode(path);
}
xmlNode = childNodes.Item(num - 1);
if (pos != path.Length)
{
++pos;
}
else
{
break;
}
}
else if (path[pos] != '-' && path[pos] != '|')
{
PathDescriptorParser.OnInvalidExpression(path);
}
else
{
goto label_8;
}
}
var xmlPatchNodeList = (XmlPatchNodeList) new SingleNodeList();
xmlPatchNodeList.AddNode(xmlNode);
return((XmlNodeList)xmlPatchNodeList);
label_8:
return(PathDescriptorParser.SelectChildNodes(xmlNode, path, startPos));
}
