/// <summary>
/// Gets path of the xml element start tag that the specified
/// <paramref name="index"/> is currently inside.
/// </summary>
/// <remarks>If the index outside the start tag then an empty path
/// is returned.</remarks>
public static XmlElementPath GetActiveElementStartPath(string xml, int index)
{
XmlElementPath path = new XmlElementPath();
string elementText = GetActiveElementStartText(xml, index);
if (elementText != null)
{
QualifiedName elementName = GetElementName(elementText);
NamespaceURI elementNamespace = GetElementNamespace(elementText);
path = GetParentElementPath(xml.Substring(0, index));
if (elementNamespace.Namespace.Length == 0)
{
if (path.Elements.Count > 0)
{
QualifiedName parentName = path.Elements[path.Elements.Count - 1];
elementNamespace.Namespace = parentName.Namespace;
elementNamespace.Prefix = parentName.Prefix;
}
}
path.Elements.Add(new QualifiedName(elementName.Name, elementNamespace.Namespace, elementNamespace.Prefix));
path.Compact();
}
return(path);
}
/// <summary>
/// Gets the active element path given the element text.
/// </summary>
static XmlElementPath GetActiveElementStartPath(string xml, int index, string elementText, QualifiedNameCollection namespaces)
{
QualifiedName elementName = GetElementName(elementText);
if (elementName == null)
{
return(new XmlElementPath());
}
NamespaceURI elementNamespace = GetElementNamespace(elementText);
XmlElementPath path = GetFullParentElementPath(xml.Substring(0, index), namespaces);
// Try to get a namespace for the active element's prefix.
if (elementName.Prefix.Length > 0 && elementNamespace.Namespace.Length == 0)
{
elementName.Namespace = GetNamespaceForPrefix(namespaces, elementName.Prefix);
elementNamespace.Namespace = elementName.Namespace;
elementNamespace.Prefix = elementName.Prefix;
}
if (elementNamespace.Namespace.Length == 0)
{
if (path.Elements.Count > 0)
{
QualifiedName parentName = path.Elements[path.Elements.Count - 1];
elementNamespace.Namespace = parentName.Namespace;
elementNamespace.Prefix = parentName.Prefix;
}
}
path.Elements.Add(new QualifiedName(elementName.Name, elementNamespace.Namespace, elementNamespace.Prefix));
path.Compact();
return(path);
}
public override int GetHashCode()
{
unchecked
{
int hashCode = 0;
if (NamespaceURI != null)
{
hashCode = NamespaceURI.GetHashCode();
}
if (LocalName != null)
{
hashCode = (hashCode * 397) ^ LocalName.GetHashCode();
}
return(hashCode);
}
}
/// <summary>
/// Gets the element namespace from the element start tag
/// string.
/// </summary>
/// <param name="xml">This string must start at the
/// element we are interested in.</param>
private static NamespaceURI GetElementNamespace(string xml)
{
NamespaceURI namespaceURI = new NamespaceURI();
Match match = Regex.Match(xml, ".*?(xmlns\\s*?|xmlns:.*?)=\\s*?['\\\"](.*?)['\\\"]");
if (match.Success)
{
namespaceURI.Namespace = match.Groups[2].Value;
string xmlns = match.Groups[1].Value.Trim();
int prefixIndex = xmlns.IndexOf(':');
if (prefixIndex > 0)
{
namespaceURI.Prefix = xmlns.Substring(prefixIndex + 1);
}
}
return(namespaceURI);
}
/// <summary>
/// Gets the element namespace from the element start tag
/// string.
/// </summary>
/// <param name="xml">This string must start at the
/// element we are interested in.</param>
static NamespaceURI GetElementNamespace(string xml)
{
NamespaceURI namespaceURI = new NamespaceURI();
Match match = Regex.Match(xml, ".*?(xmlns\\s*?|xmlns:.*?)=\\s*?['\\\"](.*?)['\\\"]");
if (match.Success) {
namespaceURI.Namespace = match.Groups[2].Value;
string xmlns = match.Groups[1].Value.Trim();
int prefixIndex = xmlns.IndexOf(':');
if (prefixIndex > 0) {
namespaceURI.Prefix = xmlns.Substring(prefixIndex + 1);
}
}
return namespaceURI;
}
public override int GetHashCode()
{
return((NamespaceURI?.GetHashCode() ?? 0) + (LocalName?.GetHashCode() ?? 0));
}
