/// <summary>
/// Source: Sharpdevelop
/// Gets the active element path given the element text.
/// </summary>
static XmlElementInformation GetActiveElementStartPath(string xml, int index, string elementText)
{
XmlElementQualifiedName elementName = GetElementName(elementText);
if (elementName.IsEmpty)
{
return(new XmlElementInformation());
}
XmlNamespace elementNamespace = GetElementNamespace(elementText);
XmlElementInformation path = GetFullParentElementPath(xml.Substring(0, index));
// Try to get a namespace for the active element's prefix.
if (elementName.HasPrefix && !elementNamespace.HasName)
{
elementName.Namespace = path.GetNamespaceForPrefix(elementName.Prefix);
elementNamespace.Name = elementName.Namespace;
elementNamespace.Prefix = elementName.Prefix;
}
if (!elementNamespace.HasName)
{
if (path.Elements.Count > 0)
{
XmlElementQualifiedName parentName = path.Elements[path.Elements.Count - 1];
elementNamespace.Name = parentName.Namespace;
elementNamespace.Prefix = parentName.Prefix;
}
}
path.AddElement(new XmlElementQualifiedName(elementName.Name, elementNamespace));
return(path);
}
/// <summary>
/// An xml element path is considered to be equal if
/// each path item has the same name and namespace.
/// </summary>
public override bool Equals(object obj)
{
XmlElementInformation rhsPath = obj as XmlElementInformation;
if (rhsPath == null)
{
return(false);
}
return(elements.Equals(rhsPath.elements));
}
/// <summary>
/// Source: SharpDevelop
/// </summary>
/// <param name="xml"></param>
/// <returns></returns>
public static XmlElementInformation GetParentElementPath(string xml)
{
XmlElementInformation path = new XmlElementInformation();
IDictionary <string, string> namespacesInScope = null;
using (StringReader reader = new StringReader(xml))
{
using (XmlTextReader xmlReader = new XmlTextReader(reader))
{
try
{
xmlReader.XmlResolver = null; // prevent XmlTextReader from loading external DTDs
while (xmlReader.Read())
{
switch (xmlReader.NodeType)
{
case XmlNodeType.Element:
if (!xmlReader.IsEmptyElement)
{
XmlElementQualifiedName elementName = new XmlElementQualifiedName(xmlReader.LocalName, xmlReader.NamespaceURI, xmlReader.Prefix);
path.AddElement(elementName);
}
break;
case XmlNodeType.EndElement:
path.Elements.RemoveLast();
break;
}
}
}
catch (XmlException)
{
namespacesInScope = xmlReader.GetNamespacesInScope(XmlNamespaceScope.All);
}
}
}
// Add namespaces in scope for the last element read.
if (namespacesInScope != null)
{
foreach (KeyValuePair <string, string> ns in namespacesInScope)
{
path.NamespacesInScope.Add(new XmlNamespace(ns.Key, ns.Value));
}
}
return(path);
}
