simple xpath only from root document

HTMLNode.h

@@ -57,6 +57,8 @@ typedef enum
 //Finds all children with a matching attribute
 -(NSArray*)findChildrenWithAttribute:(NSString*)attribute matchingName:(NSString*)className allowPartial:(BOOL)partial;
 
+-(NSArray*)nodesForXPath:(NSString*)xpath;
+
 //Gets the attribute value matching tha name
 -(NSString*)getAttributeNamed:(NSString*)name;
 

HTMLNode.m

@@ -8,6 +8,9 @@
 
 #import "HTMLNode.h"
 #import <libxml/HTMLtree.h>
+#import <libxml/xpath.h>
+#import <libxml/xpathInternals.h>
+
 
 @implementation HTMLNode
 
@@ -409,4 +412,47 @@ -(NSString*)rawContents {
 	return rawContentsOfNode(_node);
 }
 
+-(NSArray*)nodesForXPath:(NSString*)query{
+    xmlDocPtr doc = _node->doc;
+
+    xmlXPathContextPtr xpathCtx; 
+    xmlXPathObjectPtr xpathObj; 
+
+    /* Create xpath evaluation context */
+    xpathCtx = xmlXPathNewContext(doc);
+    if(xpathCtx == NULL)
+	{
+		NSLog(@"Unable to create XPath context.");
+		return nil;
+    }
+
+    /* Evaluate xpath expression */
+    xpathObj = xmlXPathEvalExpression((xmlChar *)[query cStringUsingEncoding:NSUTF8StringEncoding], xpathCtx);
+    if(xpathObj == NULL) {
+		NSLog(@"Unable to evaluate XPath.");
+		return nil;
+    }
+
+	xmlNodeSetPtr nodes = xpathObj->nodesetval;
+	if (!nodes)
+	{
+		NSLog(@"Nodes was nil.");
+		return nil;
+	}
+
+	NSMutableArray *resultNodes = [NSMutableArray array];
+	for (NSInteger i = 0; i < nodes->nodeNr; i++)
+	{
+        HTMLNode* node = [[[HTMLNode alloc] initWithXMLNode:nodes->nodeTab[i]] autorelease];
+        [resultNodes addObject:node];
+	}
+
+    /* Cleanup */
+    xmlXPathFreeObject(xpathObj);
+    xmlXPathFreeContext(xpathCtx); 
+
+    return resultNodes;
+}
+
+
 @end