public static string GetValue(this XContainer element, string path, string defaultValue = null)
{
XElement xe = element.GetNode(path);
if (xe != null)
{
return(xe.Value);
}
return(defaultValue);
}
/// <summary>Verify the element node exists.</summary>
/// <param name="container">The theme container.</param>
/// <param name="elementPath">The element path.</param>
/// <returns>The <see cref="bool" />.</returns>
public static bool NodeExists(XContainer container, string elementPath)
{
if (container == null)
{
throw new ArgumentNullException(nameof(container));
}
if (string.IsNullOrEmpty(elementPath))
{
throw new ArgumentNullException(nameof(elementPath));
}
XElement node = container.GetNode(elementPath);
bool nodeExists = node != null;
return(nodeExists);
}
/// <summary>Retrieves the node from the path.</summary>
/// <param name="container">The container.</param>
/// <param name="path">The full node path.</param>
/// <returns>The <see cref="XElement" />.</returns>
public static XElement[] GetNodes(this XContainer container, string path)
{
path = path.Trim().Trim('/');
if ((container == null) || string.IsNullOrEmpty(path))
{
return(null);
}
int _index = path.LastIndexOf('/');
if (_index <= -1)
{
return(null);
}
string _leftPath = path.Left(_index);
string _lastPath = path.RemoveLeft(_index + 1);
XElement lastNode = container.GetNode(_leftPath);
return(lastNode?.Elements(_lastPath).Where(x => x != null).ToArray());
}
/// <summary>Reads the xml container element to string.</summary>
/// <param name="container">The xml container.</param>
/// <param name="elementPath">The element path.</param>
/// <returns>The <see cref="string" />.</returns>
public static string ReadElement(XContainer container, string elementPath)
{
if (container == null)
{
throw new ArgumentNullException(nameof(container));
}
if (string.IsNullOrEmpty(elementPath))
{
throw new ArgumentNullException(nameof(elementPath));
}
string element;
if (NodeExists(container, elementPath))
{
if (NodeEmpty(container, elementPath))
{
// Empty node return a default or null value;
element = null;
}
else
{
// TODO: Create method to deserialize various color input data. Like Red. Currently only support HTML code (hex).
// Read node value.
element = container.GetNode(elementPath).Value;
}
}
else
{
element = null;
// Node not found logging to trace listener.
Logger.WriteDebug($@"Unable to read the xml node. Path: {elementPath}");
}
return(element);
}
public static XElement[] GetNodes(this XContainer element, string path)
{
path = path.Trim().Trim('/');
if (element != null && !string.IsNullOrEmpty(path))
{
int index = path.LastIndexOf('/');
if (index > -1)
{
string leftPath = path.Left(index);
string lastPath = path.RemoveLeft(index + 1);
XElement lastNode = element.GetNode(leftPath);
if (lastNode != null)
{
return(lastNode.Elements(lastPath).Where(x => x != null).ToArray());
}
}
}
return(null);
}
/// <summary>Retrieves the value.</summary>
/// <param name="element">The element.</param>
/// <param name="path">The full path.</param>
/// <param name="defaultValue">The default value.</param>
/// <returns>The <see cref="string" />.</returns>
public static string GetValue(this XContainer element, string path, string defaultValue = null)
{
return(element.GetNode(path)?.Value ?? defaultValue);
}