public static void NodesBeforeSelfBeforeAndAfter()
{
XText aText = new XText("a"), bText = new XText("b");
XElement a = new XElement("A", aText, bText);
IEnumerable<XNode> nodes = bText.NodesBeforeSelf();
Assert.Equal(1, nodes.Count());
aText.Remove();
Assert.Equal(0, nodes.Count());
}
public static void NodesBeforeSelfBeforeAndAfter()
{
XText aText = new XText("a"), bText = new XText("b");
XElement a = new XElement("A", aText, bText);
IEnumerable <XNode> nodes = bText.NodesBeforeSelf();
Assert.Equal(1, nodes.Count());
aText.Remove();
Assert.Equal(0, nodes.Count());
}
public static List <XText> GetPreceedingSiblingXTexts(this XText xtxt)
{
List <XText> xtxts = null;
if (xtxt != null)
{
var texts = xtxt.NodesBeforeSelf().Where(x => x is XText).ToList();
if (texts != null && texts.Count > 0)
{
xtxts = new List <XText>();
foreach (var x in texts)
{
XText y = x as XText;
if (y != null)
{
xtxts.Add(y);
}
}
}
}
return(xtxts);
}
public static string GetXPath(this XObject xobj)
{
if (xobj.Parent == null)
{
XDocument doc = xobj as XDocument;
if (doc != null)
{
return(".");
}
XElement el = xobj as XElement;
if (el != null)
{
return("/" + NameWithPredicate(el));
}
XText xt = xobj as XText;
if (xt != null)
{
return(null);
}
//
//the following doesn't work because the XPath data
//model doesn't include white space text nodes that
//are children of the document.
//
//return
// "/" +
// (
// xt
// .Document
// .Nodes()
// .OfType<XText>()
// .Count() != 1 ?
// "text()[" +
// (xt
// .NodesBeforeSelf()
// .OfType<XText>()
// .Count() + 1) + "]" :
// "text()"
// );
//
XComment com = xobj as XComment;
if (com != null)
{
return
("/" +
(
com
.Document
.Nodes()
.OfType <XComment>()
.Count() != 1 ?
"comment()[" +
(com
.NodesBeforeSelf()
.OfType <XComment>()
.Count() + 1) +
"]" :
"comment()"
));
}
XProcessingInstruction pi = xobj as XProcessingInstruction;
if (pi != null)
{
return
("/" +
(
pi.Document.Nodes()
.OfType <XProcessingInstruction>()
.Count() != 1 ?
"processing-instruction()[" +
(pi
.NodesBeforeSelf()
.OfType <XProcessingInstruction>()
.Count() + 1) +
"]" :
"processing-instruction()"
));
}
return(null);
}
else
{
XElement el = xobj as XElement;
if (el != null)
{
return
("/" +
el
.Ancestors()
.InDocumentOrder()
.Select(e => NameWithPredicate(e))
.StrCat("/") +
NameWithPredicate(el));
}
XAttribute at = xobj as XAttribute;
if (at != null)
{
return
("/" +
at
.Parent
.AncestorsAndSelf()
.InDocumentOrder()
.Select(e => NameWithPredicate(e))
.StrCat("/") +
"@" + GetQName(at));
}
XComment com = xobj as XComment;
if (com != null)
{
return
("/" +
com
.Parent
.AncestorsAndSelf()
.InDocumentOrder()
.Select(e => NameWithPredicate(e))
.StrCat("/") +
(
com
.Parent
.Nodes()
.OfType <XComment>()
.Count() != 1 ?
"comment()[" +
(com
.NodesBeforeSelf()
.OfType <XComment>()
.Count() + 1) + "]" :
"comment()"
));
}
XCData cd = xobj as XCData;
if (cd != null)
{
return
("/" +
cd
.Parent
.AncestorsAndSelf()
.InDocumentOrder()
.Select(e => NameWithPredicate(e))
.StrCat("/") +
(
cd
.Parent
.Nodes()
.OfType <XText>()
.Count() != 1 ?
"text()[" +
(cd
.NodesBeforeSelf()
.OfType <XText>()
.Count() + 1) + "]" :
"text()"
));
}
XText tx = xobj as XText;
if (tx != null)
{
return
("/" +
tx
.Parent
.AncestorsAndSelf()
.InDocumentOrder()
.Select(e => NameWithPredicate(e))
.StrCat("/") +
(
tx
.Parent
.Nodes()
.OfType <XText>()
.Count() != 1 ?
"text()[" +
(tx
.NodesBeforeSelf()
.OfType <XText>()
.Count() + 1) + "]" :
"text()"
));
}
XProcessingInstruction pi = xobj as XProcessingInstruction;
if (pi != null)
{
return
("/" +
pi
.Parent
.AncestorsAndSelf()
.InDocumentOrder()
.Select(e => NameWithPredicate(e))
.StrCat("/") +
(
pi
.Parent
.Nodes()
.OfType <XProcessingInstruction>()
.Count() != 1 ?
"processing-instruction()[" +
(pi
.NodesBeforeSelf()
.OfType <XProcessingInstruction>()
.Count() + 1) + "]" :
"processing-instruction()"
));
}
return(null);
}
}
/// <summary>
/// Gets the X path.
/// </summary>
/// <param name="xobj">The xobj.</param>
/// <returns>The x Path.</returns>
public static string GetXPath(this XObject xobj)
{
if (xobj.Parent == null)
{
XDocument doc = xobj as XDocument;
if (doc != null)
{
return(".");
}
XElement el = xobj as XElement;
if (el != null)
{
return("/" + NameWithPredicate(el));
}
// the XPath data model does not include white space text nodes
// that are children of a document, so this method returns null.
XText xt = xobj as XText;
if (xt != null)
{
return(null);
}
XComment com = xobj as XComment;
if (com?.Document != null)
{
return("/" + (com.Document.Nodes().OfType <XComment>().Count() != 1 ? "comment()[" + (com.NodesBeforeSelf().OfType <XComment>().Count() + 1) + "]" : "comment()"));
}
XProcessingInstruction pi = xobj as XProcessingInstruction;
if (pi?.Document != null)
{
return("/" + (pi.Document.Nodes().OfType <XProcessingInstruction>().Count() != 1 ? "processing-instruction()[" + (pi.NodesBeforeSelf().OfType <XProcessingInstruction>().Count() + 1) + "]" : "processing-instruction()"));
}
return(null);
}
else
{
XElement el = xobj as XElement;
if (el != null)
{
return("/" + el.Ancestors().InDocumentOrder().Select(NameWithPredicate).StrCat("/") + NameWithPredicate(el));
}
XAttribute at = xobj as XAttribute;
if (at?.Parent != null)
{
return("/" + at.Parent.AncestorsAndSelf().InDocumentOrder().Select(NameWithPredicate).StrCat("/") + "@" + GetQName(at));
}
XComment com = xobj as XComment;
if (com?.Parent != null)
{
return("/" + com.Parent.AncestorsAndSelf().InDocumentOrder().Select(NameWithPredicate).StrCat("/") + (com.Parent.Nodes().OfType <XComment>().Count() != 1 ? "comment()[" + (com.NodesBeforeSelf().OfType <XComment>().Count() + 1) + "]" : "comment()"));
}
XCData cd = xobj as XCData;
if (cd?.Parent != null)
{
return("/" + cd.Parent.AncestorsAndSelf().InDocumentOrder().Select(NameWithPredicate).StrCat("/") + (cd.Parent.Nodes().OfType <XText>().Count() != 1 ? "text()[" + (cd.NodesBeforeSelf().OfType <XText>().Count() + 1) + "]" : "text()"));
}
XText tx = xobj as XText;
if (tx?.Parent != null)
{
return("/" + tx.Parent.AncestorsAndSelf().InDocumentOrder().Select(NameWithPredicate).StrCat("/") + (tx.Parent.Nodes().OfType <XText>().Count() != 1 ? "text()[" + (tx.NodesBeforeSelf().OfType <XText>().Count() + 1) + "]" : "text()"));
}
XProcessingInstruction pi = xobj as XProcessingInstruction;
if (pi?.Parent != null)
{
return("/" + pi.Parent.AncestorsAndSelf().InDocumentOrder().Select(NameWithPredicate).StrCat("/") + (pi.Parent.Nodes().OfType <XProcessingInstruction>().Count() != 1 ? "processing-instruction()[" + (pi.NodesBeforeSelf().OfType <XProcessingInstruction>().Count() + 1) + "]" : "processing-instruction()"));
}
return(null);
}
}
/// <summary>
/// Recupera l'esspressione xpath di un determinato XObject
/// </summary>
/// <param name="xobj">Oggetto da valutare</param>
/// <returns>xpath in formato stringa</returns>
public static string GetXPath(this XObject xobj)
{
if (xobj.Parent == null)
{
var doc = xobj as XDocument;
if (doc != null)
{
return(".");
}
var el = xobj as XElement;
if (el != null)
{
return("/" + NameWithPredicate(el));
}
XText xt = xobj as XText;
if (xt != null)
{
return(null);
}
XComment com = xobj as XComment;
if (com != null)
{
return
("/" +
(
com
.Document
.Nodes()
.OfType <XComment>()
.Count() != 1 ?
"comment()[" +
(com
.NodesBeforeSelf()
.OfType <XComment>()
.Count() + 1) +
"]" :
"comment()"
));
}
XProcessingInstruction pi = xobj as XProcessingInstruction;
if (pi != null)
{
return
("/" +
(
pi.Document.Nodes()
.OfType <XProcessingInstruction>()
.Count() != 1 ?
"processing-instruction()[" +
(pi
.NodesBeforeSelf()
.OfType <XProcessingInstruction>()
.Count() + 1) +
"]" :
"processing-instruction()"
));
}
return(null);
}
else
{
XElement el = xobj as XElement;
if (el != null)
{
return
("/" +
el
.Ancestors()
.InDocumentOrder()
.Select(NameWithPredicate)
.StrCat("/") +
NameWithPredicate(el));
}
XAttribute at = xobj as XAttribute;
if (at != null)
{
return
("/" +
at
.Parent
.AncestorsAndSelf()
.InDocumentOrder()
.Select(NameWithPredicate)
.StrCat("/") +
"@" + GetQName(at));
}
XComment com = xobj as XComment;
if (com != null)
{
return
("/" +
com
.Parent
.AncestorsAndSelf()
.InDocumentOrder()
.Select(NameWithPredicate)
.StrCat("/") +
(
com
.Parent
.Nodes()
.OfType <XComment>()
.Count() != 1 ?
"comment()[" +
(com
.NodesBeforeSelf()
.OfType <XComment>()
.Count() + 1) + "]" :
"comment()"
));
}
XCData cd = xobj as XCData;
if (cd != null)
{
return
("/" +
cd
.Parent
.AncestorsAndSelf()
.InDocumentOrder()
.Select(NameWithPredicate)
.StrCat("/") +
(
cd
.Parent
.Nodes()
.OfType <XText>()
.Count() != 1 ?
"text()[" +
(cd
.NodesBeforeSelf()
.OfType <XText>()
.Count() + 1) + "]" :
"text()"
));
}
XText tx = xobj as XText;
if (tx != null)
{
return
("/" +
tx
.Parent
.AncestorsAndSelf()
.InDocumentOrder()
.Select(NameWithPredicate)
.StrCat("/") +
(
tx
.Parent
.Nodes()
.OfType <XText>()
.Count() != 1 ?
"text()[" +
(tx
.NodesBeforeSelf()
.OfType <XText>()
.Count() + 1) + "]" :
"text()"
));
}
XProcessingInstruction pi = xobj as XProcessingInstruction;
if (pi != null)
{
return
("/" +
pi
.Parent
.AncestorsAndSelf()
.InDocumentOrder()
.Select(NameWithPredicate)
.StrCat("/") +
(
pi
.Parent
.Nodes()
.OfType <XProcessingInstruction>()
.Count() != 1 ?
"processing-instruction()[" +
(pi
.NodesBeforeSelf()
.OfType <XProcessingInstruction>()
.Count() + 1) + "]" :
"processing-instruction()"
));
}
return(null);
}
}