96 lines
3.2 KiB
C#
96 lines
3.2 KiB
C#
//
|
|
// Authors:
|
|
// Atsushi Enomoto
|
|
//
|
|
// Copyright 2007 Novell (http://www.novell.com)
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining
|
|
// a copy of this software and associated documentation files (the
|
|
// "Software"), to deal in the Software without restriction, including
|
|
// without limitation the rights to use, copy, modify, merge, publish,
|
|
// distribute, sublicense, and/or sell copies of the Software, and to
|
|
// permit persons to whom the Software is furnished to do so, subject to
|
|
// the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be
|
|
// included in all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
//
|
|
|
|
using System;
|
|
using System.Collections;
|
|
using System.Collections.Generic;
|
|
using System.Xml;
|
|
using System.Xml.Linq;
|
|
|
|
namespace System.Xml.XPath
|
|
{
|
|
public static class Extensions
|
|
{
|
|
public static XPathNavigator CreateNavigator (this XNode node)
|
|
{
|
|
return CreateNavigator (node, new NameTable ());
|
|
}
|
|
|
|
public static XPathNavigator CreateNavigator (this XNode node, XmlNameTable nameTable)
|
|
{
|
|
return new XNodeNavigator (node, nameTable);
|
|
}
|
|
|
|
public static object XPathEvaluate (this XNode node, string expression)
|
|
{
|
|
return XPathEvaluate (node, expression, null);
|
|
}
|
|
|
|
public static object XPathEvaluate (this XNode node, string expression, IXmlNamespaceResolver resolver)
|
|
{
|
|
object navigationResult = CreateNavigator (node).Evaluate (expression, resolver);
|
|
if (!(navigationResult is XPathNodeIterator))
|
|
return navigationResult;
|
|
return GetUnderlyingXObjects((XPathNodeIterator) navigationResult);
|
|
}
|
|
|
|
private static IEnumerable<object> GetUnderlyingXObjects(XPathNodeIterator nodeIterator)
|
|
{
|
|
foreach (XPathNavigator nav in nodeIterator)
|
|
{
|
|
yield return nav.UnderlyingObject;
|
|
}
|
|
}
|
|
|
|
public static XElement XPathSelectElement (this XNode node, string expression)
|
|
{
|
|
return XPathSelectElement (node, expression, null);
|
|
}
|
|
|
|
public static XElement XPathSelectElement (this XNode node, string expression, IXmlNamespaceResolver resolver)
|
|
{
|
|
XPathNavigator nav = CreateNavigator (node).SelectSingleNode (expression, resolver);
|
|
if (nav == null)
|
|
return null;
|
|
return nav.UnderlyingObject as XElement;
|
|
}
|
|
|
|
public static IEnumerable<XElement> XPathSelectElements (this XNode node, string expression)
|
|
{
|
|
return XPathSelectElements (node, expression, null);
|
|
}
|
|
|
|
public static IEnumerable<XElement> XPathSelectElements (this XNode node, string expression, IXmlNamespaceResolver resolver)
|
|
{
|
|
XPathNodeIterator iter = CreateNavigator (node).Select (expression, resolver);
|
|
foreach (XPathNavigator nav in iter){
|
|
if (nav.UnderlyingObject is XElement)
|
|
yield return (XElement) nav.UnderlyingObject;
|
|
}
|
|
}
|
|
}
|
|
}
|