// Access by index to elements in document order.
// Useful for repeated elements.
public override bool TryGetIndex(GetIndexBinder binder, object[] indexes, out object result)
{
if (indexes.Length == 1 && indexes[0] is int)
{
var index = (int)indexes[0];
if (index >= 0)
{
// this is slow...
var el = element_.Elements().Skip(index).FirstOrDefault();
if (el != null)
{
result = new DynamicXml(el)
{
Converter = Converter
}
}
;
else
{
result = new Missing($"{index}. element");
}
return(true);
}
else
{
// negative index throws exception;
// alternatively access from the end of collection can be considered
throw new IndexOutOfRangeException();
}
}
return(base.TryGetIndex(binder, indexes, out result));
}
// Access to XML subnodes or attributes.
public override bool TryGetMember(GetMemberBinder binder, out object result)
{
// is it a subelement?
var subelement = Element.Element(binder.Name);
if (subelement != null)
{
result = new DynamicXml(subelement)
{
Converter = Converter
};
return(true);
}
// if not a subelement, try attributes
var attribute = Element.Attribute(binder.Name);
if (attribute != null)
{
result = new DynamicConverter(attribute.Value)
{
Converter = Converter
};
return(true);
}
// name not found
result = new Missing(binder.Name);
return(true);
}
public ConfigReader(Stream stream)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream)); //ArgumentException("Missing configuration: " + path);
}
cfg_ = new DynamicXml(XElement.Load(stream));
}
// Traversal support for node attributes.
public static IEnumerable GetAttributes(DynamicXml element, ConfigurationConverterFunc converter)
{
if (element == null)
{
return(empty_);
}
return(element.Element.Attributes().Select(
a => new ConfigurationAttribute(a, new DynamicConverter {
Value = a.Value, Converter = converter
})));
}
public ConfigReader(string xml, bool path) // takes configuration xml file path or xml text
{
if (xml == null)
{
throw new ArgumentNullException(nameof(xml)); //ArgumentException("Missing configuration: " + path);
}
if (path && !File.Exists(xml))
{
throw new ArgumentException($"Missing XML file: {path}.");
}
cfg_ = new DynamicXml(path ? XElement.Load(xml) : XElement.Parse(xml));
}
// Traversal support for nodes.
public static IEnumerable GetDescendants(DynamicXml element, bool deep, ConfigurationConverterFunc converter)
{
if (element == null)
{
return(empty_);
}
var elements = deep ? element.Element.Descendants() : element.Element.Elements();
return(elements.Select(
d => new ConfigurationElement(d, new DynamicXml(d)
{
Converter = converter
})));
}
public IEnumerable GetAttributes(dynamic element)
{
return(DynamicXml.GetAttributes(element as DynamicXml, Converter));
}
public IEnumerable GetElements(dynamic element, bool deep)
{
return(DynamicXml.GetDescendants(element as DynamicXml, deep, Converter));
}
