527 lines
20 KiB
C#
527 lines
20 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Dynamic;
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using System.Xml.Linq;
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using System.Xml.XPath;
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using System.Collections;
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namespace umbraco.MacroEngines
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{
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public class DynamicXml : DynamicObject, IEnumerable
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{
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public XElement BaseElement { get; set; }
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public DynamicXml(XElement baseElement)
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{
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this.BaseElement = baseElement;
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}
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public string InnerText
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{
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get
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{
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return BaseElement.Value;
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}
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}
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public override bool TryGetIndex(GetIndexBinder binder, object[] indexes, out object result)
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{
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int index = 0;
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if (indexes.Length > 0)
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{
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index = (int)indexes[0];
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result = new DynamicXml(this.BaseElement.Elements().ToList()[index]);
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return true;
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}
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return base.TryGetIndex(binder, indexes, out result);
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}
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public override bool TryInvokeMember(InvokeMemberBinder binder, object[] args, out object result)
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{
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if (args.Length == 0 && binder.Name == "ToXml")
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{
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result = this.BaseElement.ToString();
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return true;
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}
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if (args.Length == 1 && binder.Name == "XPath")
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{
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var elements = this.BaseElement.XPathSelectElements(args[0].ToString());
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HandleIEnumerableXElement(elements, out result);
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return true; //anyway
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}
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return base.TryInvokeMember(binder, args, out result);
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}
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public override bool TryGetMember(GetMemberBinder binder, out object result)
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{
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//Go ahead and try to fetch all of the elements matching the member name, and wrap them
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var elements = BaseElement.Elements(binder.Name);
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if (HandleIEnumerableXElement(elements, out result))
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{
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return true;
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}
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else
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{
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//Ok, so no elements matched, so lets try attributes
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var attributes = BaseElement.Attributes(binder.Name).Select(attr => attr.Value);
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int count = attributes.Count();
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if (count > 0)
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{
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if (count > 1)
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result = attributes; //more than one attribute matched, lets return the collection
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else
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result = attributes.FirstOrDefault(); //only one attribute matched, lets just return it
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return true; // return true because we matched
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}
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}
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return base.TryGetMember(binder, out result);
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}
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private bool HandleIEnumerableXElement(IEnumerable<XElement> elements, out object result)
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{
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//Get the count now, so we don't have to call it twice
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int count = elements.Count();
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if (count > 0)
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{
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var firstElement = elements.FirstOrDefault();
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//we have a single element, does it have any children?
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if (firstElement != null && firstElement.Elements().Count() == 0 && !firstElement.HasAttributes)
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{
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//no, return the text
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result = firstElement.Value;
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return true;
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}
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else
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{
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//We have more than one matching element, so let's return the collection
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//elements is IEnumerable<DynamicXml>
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//but we want to be able to re-enter this code
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XElement root = new XElement(XName.Get("root"));
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root.Add(elements);
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result = new DynamicXml(root);
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//From here, you'll either end up back here (because you have <root><node><node>)
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//or you use [] indexing and you end up with a single element
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return true;
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}
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}
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result = null;
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return false;
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}
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public IEnumerator GetEnumerator()
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{
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return this.BaseElement.Elements().Select(e => new DynamicXml(e)).GetEnumerator();
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}
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public int Count()
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{
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return this.BaseElement.Elements().Count();
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}
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public bool IsNull()
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{
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return false;
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}
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public bool HasValue()
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{
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return true;
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}
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public bool IsFirst()
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{
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return IsHelper(n => n.Index() == 0);
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}
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public string IsFirst(string valueIfTrue)
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{
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return IsHelper(n => n.Index() == 0, valueIfTrue);
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}
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public string IsFirst(string valueIfTrue, string valueIfFalse)
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{
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return IsHelper(n => n.Index() == 0, valueIfTrue, valueIfFalse);
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}
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public bool IsNotFirst()
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{
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return !IsHelper(n => n.Index() == 0);
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}
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public string IsNotFirst(string valueIfTrue)
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{
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return IsHelper(n => n.Index() != 0, valueIfTrue);
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}
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public string IsNotFirst(string valueIfTrue, string valueIfFalse)
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{
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return IsHelper(n => n.Index() != 0, valueIfTrue, valueIfFalse);
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}
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public bool IsPosition(int index)
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{
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if (this.BaseElement == null || this.BaseElement.Parent == null)
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{
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return false;
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}
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return IsHelper(n => n.Index() == index);
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}
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public string IsPosition(int index, string valueIfTrue)
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{
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if (this.BaseElement == null || this.BaseElement.Parent == null)
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{
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return string.Empty;
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}
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return IsHelper(n => n.Index() == index, valueIfTrue);
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}
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public string IsPosition(int index, string valueIfTrue, string valueIfFalse)
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{
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if (this.BaseElement == null || this.BaseElement.Parent == null)
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{
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return valueIfFalse;
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}
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return IsHelper(n => n.Index() == index, valueIfTrue, valueIfFalse);
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}
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public bool IsModZero(int modulus)
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{
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if (this.BaseElement == null || this.BaseElement.Parent == null)
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{
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return false;
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}
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return IsHelper(n => n.Index() % modulus == 0);
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}
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public string IsModZero(int modulus, string valueIfTrue)
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{
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if (this.BaseElement == null || this.BaseElement.Parent == null)
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{
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return string.Empty;
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}
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return IsHelper(n => n.Index() % modulus == 0, valueIfTrue);
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}
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public string IsModZero(int modulus, string valueIfTrue, string valueIfFalse)
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{
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if (this.BaseElement == null || this.BaseElement.Parent == null)
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{
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return valueIfFalse;
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}
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return IsHelper(n => n.Index() % modulus == 0, valueIfTrue, valueIfFalse);
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}
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public bool IsNotModZero(int modulus)
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{
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if (this.BaseElement == null || this.BaseElement.Parent == null)
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{
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return false;
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}
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return IsHelper(n => n.Index() % modulus != 0);
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}
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public string IsNotModZero(int modulus, string valueIfTrue)
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{
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if (this.BaseElement == null || this.BaseElement.Parent == null)
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{
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return string.Empty;
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}
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return IsHelper(n => n.Index() % modulus != 0, valueIfTrue);
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}
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public string IsNotModZero(int modulus, string valueIfTrue, string valueIfFalse)
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{
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if (this.BaseElement == null || this.BaseElement.Parent == null)
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{
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return valueIfFalse;
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}
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return IsHelper(n => n.Index() % modulus != 0, valueIfTrue, valueIfFalse);
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}
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public bool IsNotPosition(int index)
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{
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if (this.BaseElement == null || this.BaseElement.Parent == null)
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{
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return false;
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}
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return !IsHelper(n => n.Index() == index);
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}
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public string IsNotPosition(int index, string valueIfTrue)
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{
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if (this.BaseElement == null || this.BaseElement.Parent == null)
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{
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return string.Empty;
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}
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return IsHelper(n => n.Index() != index, valueIfTrue);
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}
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public string IsNotPosition(int index, string valueIfTrue, string valueIfFalse)
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{
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if (this.BaseElement == null || this.BaseElement.Parent == null)
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{
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return valueIfFalse;
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}
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return IsHelper(n => n.Index() != index, valueIfTrue, valueIfFalse);
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}
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public bool IsLast()
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{
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if (this.BaseElement == null || this.BaseElement.Parent == null)
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{
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return false;
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}
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int count = this.BaseElement.Parent.Elements().Count();
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return IsHelper(n => n.Index() == count - 1);
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}
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public string IsLast(string valueIfTrue)
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{
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if (this.BaseElement == null || this.BaseElement.Parent == null)
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{
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return string.Empty;
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}
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int count = this.BaseElement.Parent.Elements().Count();
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return IsHelper(n => n.Index() == count - 1, valueIfTrue);
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}
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public string IsLast(string valueIfTrue, string valueIfFalse)
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{
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if (this.BaseElement == null || this.BaseElement.Parent == null)
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{
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return valueIfFalse;
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}
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int count = this.BaseElement.Parent.Elements().Count();
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return IsHelper(n => n.Index() == count - 1, valueIfTrue, valueIfFalse);
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}
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public bool IsNotLast()
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{
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if (this.BaseElement == null || this.BaseElement.Parent == null)
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{
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return false;
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}
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int count = this.BaseElement.Parent.Elements().Count();
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return !IsHelper(n => n.Index() == count - 1);
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}
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public string IsNotLast(string valueIfTrue)
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{
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if (this.BaseElement == null || this.BaseElement.Parent == null)
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{
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return string.Empty;
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}
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int count = this.BaseElement.Parent.Elements().Count();
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return IsHelper(n => n.Index() != count - 1, valueIfTrue);
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}
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public string IsNotLast(string valueIfTrue, string valueIfFalse)
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{
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if (this.BaseElement == null || this.BaseElement.Parent == null)
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{
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return valueIfFalse;
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}
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int count = this.BaseElement.Parent.Elements().Count();
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return IsHelper(n => n.Index() != count - 1, valueIfTrue, valueIfFalse);
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}
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public bool IsEven()
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{
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return IsHelper(n => n.Index() % 2 == 0);
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}
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public string IsEven(string valueIfTrue)
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{
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return IsHelper(n => n.Index() % 2 == 0, valueIfTrue);
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}
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public string IsEven(string valueIfTrue, string valueIfFalse)
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{
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return IsHelper(n => n.Index() % 2 == 0, valueIfTrue, valueIfFalse);
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}
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public bool IsOdd()
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{
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return IsHelper(n => n.Index() % 2 == 1);
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}
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public string IsOdd(string valueIfTrue)
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{
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return IsHelper(n => n.Index() % 2 == 1, valueIfTrue);
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}
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public string IsOdd(string valueIfTrue, string valueIfFalse)
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{
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return IsHelper(n => n.Index() % 2 == 1, valueIfTrue, valueIfFalse);
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}
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public bool IsEqual(DynamicXml other)
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{
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return IsHelper(n => n.BaseElement == other.BaseElement);
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}
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public string IsEqual(DynamicXml other, string valueIfTrue)
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{
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return IsHelper(n => n.BaseElement == other.BaseElement, valueIfTrue);
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}
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public string IsEqual(DynamicXml other, string valueIfTrue, string valueIfFalse)
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{
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return IsHelper(n => n.BaseElement == other.BaseElement, valueIfTrue, valueIfFalse);
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}
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public bool IsDescendant(DynamicXml other)
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{
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var ancestors = this.Ancestors();
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return IsHelper(n => ancestors.Find(ancestor => ancestor.BaseElement == other.BaseElement) != null);
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}
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public string IsDescendant(DynamicXml other, string valueIfTrue)
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{
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var ancestors = this.Ancestors();
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return IsHelper(n => ancestors.Find(ancestor => ancestor.BaseElement == other.BaseElement) != null, valueIfTrue);
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}
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public string IsDescendant(DynamicXml other, string valueIfTrue, string valueIfFalse)
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{
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var ancestors = this.Ancestors();
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return IsHelper(n => ancestors.Find(ancestor => ancestor.BaseElement == other.BaseElement) != null, valueIfTrue, valueIfFalse);
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}
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public bool IsDescendantOrSelf(DynamicXml other)
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{
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var ancestors = this.AncestorsOrSelf();
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return IsHelper(n => ancestors.Find(ancestor => ancestor.BaseElement == other.BaseElement) != null);
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}
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public string IsDescendantOrSelf(DynamicXml other, string valueIfTrue)
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{
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var ancestors = this.AncestorsOrSelf();
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return IsHelper(n => ancestors.Find(ancestor => ancestor.BaseElement == other.BaseElement) != null, valueIfTrue);
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}
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public string IsDescendantOrSelf(DynamicXml other, string valueIfTrue, string valueIfFalse)
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{
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var ancestors = this.AncestorsOrSelf();
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return IsHelper(n => ancestors.Find(ancestor => ancestor.BaseElement == other.BaseElement) != null, valueIfTrue, valueIfFalse);
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}
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public bool IsAncestor(DynamicXml other)
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{
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var descendants = this.Descendants();
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return IsHelper(n => descendants.Find(descendant => descendant.BaseElement == other.BaseElement) != null);
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}
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public string IsAncestor(DynamicXml other, string valueIfTrue)
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{
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var descendants = this.Descendants();
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return IsHelper(n => descendants.Find(descendant => descendant.BaseElement == other.BaseElement) != null, valueIfTrue);
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}
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public string IsAncestor(DynamicXml other, string valueIfTrue, string valueIfFalse)
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{
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var descendants = this.Descendants();
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return IsHelper(n => descendants.Find(descendant => descendant.BaseElement == other.BaseElement) != null, valueIfTrue, valueIfFalse);
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}
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public bool IsAncestorOrSelf(DynamicXml other)
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{
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var descendants = this.DescendantsOrSelf();
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return IsHelper(n => descendants.Find(descendant => descendant.BaseElement == other.BaseElement) != null);
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}
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public string IsAncestorOrSelf(DynamicXml other, string valueIfTrue)
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{
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var descendants = this.DescendantsOrSelf();
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return IsHelper(n => descendants.Find(descendant => descendant.BaseElement == other.BaseElement) != null, valueIfTrue);
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}
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public string IsAncestorOrSelf(DynamicXml other, string valueIfTrue, string valueIfFalse)
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{
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var descendants = this.DescendantsOrSelf();
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return IsHelper(n => descendants.Find(descendant => descendant.BaseElement == other.BaseElement) != null, valueIfTrue, valueIfFalse);
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}
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public List<DynamicXml> Descendants()
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{
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return Descendants(n => true);
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}
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public List<DynamicXml> Descendants(Func<XElement, bool> func)
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{
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var flattenedNodes = this.BaseElement.Elements().Map(func, (XElement n) => { return n.Elements(); });
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return flattenedNodes.ToList().ConvertAll(n => new DynamicXml(n));
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}
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public List<DynamicXml> DescendantsOrSelf()
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{
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return DescendantsOrSelf(n => true);
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}
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public List<DynamicXml> DescendantsOrSelf(Func<XElement, bool> func)
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{
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var flattenedNodes = this.BaseElement.Elements().Map(func, (XElement n) => { return n.Elements(); });
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var list = new List<DynamicXml>();
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list.Add(this);
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list.AddRange(flattenedNodes.ToList().ConvertAll(n => new DynamicXml(n)));
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return list;
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}
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public List<DynamicXml> Ancestors()
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{
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return Ancestors(item => true);
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}
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public List<DynamicXml> Ancestors(Func<XElement, bool> func)
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{
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List<XElement> ancestorList = new List<XElement>();
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var node = this.BaseElement;
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while (node != null)
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{
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if (node.Parent == null) break;
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XElement parent = node.Parent;
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if (parent != null)
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{
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if (this.BaseElement != parent)
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{
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node = parent;
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if (func(node))
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{
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ancestorList.Add(node);
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}
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}
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else
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{
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break;
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}
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}
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else
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{
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break;
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}
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}
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ancestorList.Reverse();
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return ancestorList.ConvertAll(item => new DynamicXml(item));
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}
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public List<DynamicXml> AncestorsOrSelf()
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{
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return AncestorsOrSelf(item => true);
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}
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public List<DynamicXml> AncestorsOrSelf(Func<XElement, bool> func)
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{
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List<XElement> ancestorList = new List<XElement>();
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var node = this.BaseElement;
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ancestorList.Add(node);
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while (node != null)
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{
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if (node.Parent == null) break;
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XElement parent = node.Parent;
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if (parent != null)
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{
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if (this.BaseElement != parent)
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{
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node = parent;
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if (func(node))
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{
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ancestorList.Add(node);
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}
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}
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else
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{
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break;
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}
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}
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else
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{
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break;
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}
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}
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ancestorList.Reverse();
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return ancestorList.ConvertAll(item => new DynamicXml(item));
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}
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public int Index()
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{
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if (this.BaseElement != null && this.BaseElement.Parent != null)
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{
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var elements = this.BaseElement.Parent.Elements();
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int index = 0;
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foreach (var element in elements)
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{
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if (element == this.BaseElement) break;
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index++;
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}
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return index;
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}
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return 0;
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}
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public bool IsHelper(Func<DynamicXml, bool> test)
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{
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return test(this);
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}
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public string IsHelper(Func<DynamicXml, bool> test, string valueIfTrue)
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{
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return IsHelper(test, valueIfTrue, string.Empty);
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}
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public string IsHelper(Func<DynamicXml, bool> test, string valueIfTrue, string valueIfFalse)
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{
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return test(this) ? valueIfTrue : valueIfFalse;
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}
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}
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}
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