5 // Copyright 2007 Novell (http://www.novell.com)
7 // Permission is hereby granted, free of charge, to any person obtaining
8 // a copy of this software and associated documentation files (the
9 // "Software"), to deal in the Software without restriction, including
10 // without limitation the rights to use, copy, modify, merge, publish,
11 // distribute, sublicense, and/or sell copies of the Software, and to
12 // permit persons to whom the Software is furnished to do so, subject to
13 // the following conditions:
15 // The above copyright notice and this permission notice shall be
16 // included in all copies or substantial portions of the Software.
18 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
21 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
22 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 using System.Collections.Generic;
30 using System.Xml.Linq;
32 namespace System.Xml.XPath
34 public static class Extensions
36 public static XPathNavigator CreateNavigator (this XNode node)
38 return CreateNavigator (node, new NameTable ());
41 public static XPathNavigator CreateNavigator (this XNode node, XmlNameTable nameTable)
43 return new XNodeNavigator (node, nameTable);
46 public static object XPathEvaluate (this XNode node, string expression)
48 return XPathEvaluate (node, expression, null);
51 public static object XPathEvaluate (this XNode node, string expression, IXmlNamespaceResolver nsResolver)
53 return CreateNavigator (node).Evaluate (expression, nsResolver);
56 public static XElement XPathSelectElement (this XNode node, string xpath)
58 return XPathSelectElement (node, xpath, null);
61 public static XElement XPathSelectElement (this XNode node, string xpath, IXmlNamespaceResolver nsResolver)
63 XPathNavigator nav = CreateNavigator (node).SelectSingleNode (xpath, nsResolver);
64 return nav.UnderlyingObject as XElement;
67 public static IEnumerable<XElement> XPathSelectElements (this XNode node, string xpath)
69 return XPathSelectElements (node, xpath, null);
72 public static IEnumerable<XElement> XPathSelectElements (this XNode node, string xpath, IXmlNamespaceResolver nsResolver)
74 XPathNodeIterator iter = CreateNavigator (node).Select (xpath, nsResolver);
75 foreach (XPathNavigator nav in iter)
76 if (nav.UnderlyingObject is XElement)
77 yield return (XElement) nav.UnderlyingObject;