Merge pull request #827 from Shinku-Chen/xml-index

add : NewXMLElement add index

Author: asciimoo

colly.go

@@ -1272,8 +1272,9 @@ func (c *Collector) handleOnXML(resp *Response) error {
 			if !cc.active.Load() {
 				continue
 			}
-			for _, n := range htmlquery.Find(doc, cc.Query) {
+			for i, n := range htmlquery.Find(doc, cc.Query) {
 				e := NewXMLElementFromHTMLNode(resp, n)
+				e.Index = i
 				if c.debugger != nil {
 					c.debugger.Event(createEvent("xml", resp.Request.ID, c.ID, map[string]string{
 						"selector": cc.Query,

xmlelement.go

@@ -37,6 +37,8 @@ type XMLElement struct {
 	// based on how the XMLElement was created.
 	DOM    interface{}
 	isHTML bool
+	// Index stores the position of the current element within all the elements matched by an OnXML callback
+	Index int
 }
 
 // NewXMLElementFromHTMLNode creates a XMLElement from a html.Node.