// Coerce the result into a number
func (xpath *XPath) ResultAsNumber() (val float64, err error) {
if xpath.ReturnType() != XPATH_NUMBER {
xpath.ResultPtr = C.xmlXPathConvertNumber(xpath.ResultPtr)
}
val = float64(xpath.ResultPtr.floatval)
return
}
func XPathObjectToValue(obj C.xmlXPathObjectPtr) (result interface{}) {
rt := XPathObjectType(C.getXPathObjectType(obj))
switch rt {
case XPATH_NODESET, XPATH_XSLT_TREE:
if nodesetPtr := obj.nodesetval; nodesetPtr != nil {
if nodesetSize := int(nodesetPtr.nodeNr); nodesetSize > 0 {
nodes := make([]unsafe.Pointer, nodesetSize)
for i := 0; i < nodesetSize; i++ {
nodes[i] = unsafe.Pointer(C.fetchNode(nodesetPtr, C.int(i)))
}
result = nodes
return
}
}
result = nil
case XPATH_NUMBER:
obj = C.xmlXPathConvertNumber(obj)
result = float64(obj.floatval)
case XPATH_BOOLEAN:
obj = C.xmlXPathConvertBoolean(obj)
result = obj.boolval != 0
default:
obj = C.xmlXPathConvertString(obj)
result = C.GoString((*C.char)(unsafe.Pointer(obj.stringval)))
}
return
}
// xmlXPathConvertNumber
func (obj *XPathObject) ConvertNumber() *XPathObject {
return makeXpathObj(C.xmlXPathConvertNumber(obj.Ptr))
}