/// <summary>
/// Compacts the path so it only contains the elements that are from
/// the namespace of the last element in the path.
/// </summary>
/// <remarks>This method is used when we need to know the path for a
/// particular namespace and do not care about the complete path.
/// </remarks>
public void Compact()
{
if (elements.HasItems)
{
XmlElementQualifiedName lastName = Elements.GetLast();
int index = LastIndexNotMatchingNamespace(lastName.Namespace);
if (index != -1)
{
elements.RemoveFirst(index + 1);
}
}
}
int LastIndexNotMatchingNamespace(string namespaceUri)
{
if (elements.Count > 1)
{
// Start the check from the last but one item.
for (int i = elements.Count - 2; i >= 0; --i)
{
XmlElementQualifiedName name = elements[i];
if (name.Namespace != namespaceUri)
{
return(i);
}
}
}
return(-1);
}
public void AddElement(XmlElementQualifiedName elementName)
{
elements.Add(elementName);
}
public void AddElement(XmlElementQualifiedName elementName)
{
elements.Add(elementName);
}
/// <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;
}
