func (xmlNode *XmlNode) isAccestor(nodePtr unsafe.Pointer) int {
parentPtr := xmlNode.Ptr.parent
if C.xmlNodePtrCheck(unsafe.Pointer(parentPtr)) == C.int(0) {
return -1
}
for ; parentPtr != nil; parentPtr = parentPtr.parent {
if C.xmlNodePtrCheck(unsafe.Pointer(parentPtr)) == C.int(0) {
return -1
}
p := unsafe.Pointer(parentPtr)
if p == nodePtr {
return 1
}
}
return 0
}
func (xmlNode *XmlNode) addChild(node Node) (err error) {
nodeType := node.NodeType()
if nodeType == XML_DOCUMENT_NODE || nodeType == XML_HTML_DOCUMENT_NODE {
err = ERR_CANNOT_MAKE_DUCMENT_AS_CHILD
return
}
nodePtr := node.NodePtr()
parentPtr := xmlNode.Ptr.parent
if C.xmlNodePtrCheck(unsafe.Pointer(parentPtr)) == C.int(0) {
return
}
isNodeAccestor := false
for ; parentPtr != nil; parentPtr = parentPtr.parent {
if C.xmlNodePtrCheck(unsafe.Pointer(parentPtr)) == C.int(0) {
return
}
p := unsafe.Pointer(parentPtr)
if p == nodePtr {
isNodeAccestor = true
}
}
if !isNodeAccestor {
C.xmlUnlinkNode((*C.xmlNode)(nodePtr))
C.xmlAddChild(xmlNode.Ptr, (*C.xmlNode)(nodePtr))
} else {
node.Remove()
}
/*
childPtr := C.xmlAddChild(xmlNode.Ptr, (*C.xmlNode)(nodePtr))
if nodeType == XML_TEXT_NODE && childPtr != (*C.xmlNode)(nodePtr) {
//check the retured pointer
//if it is not the text node just added, it means that the text node is freed because it has merged into other nodes
//then we should invalid this node, because we do not want to have a dangling pointer
node.Remove()
}
*/
return
}
func (xmlNode *XmlNode) Parent() Node {
if C.xmlNodePtrCheck(unsafe.Pointer(xmlNode.Ptr.parent)) == C.int(0) {
return nil
}
return NewNode(unsafe.Pointer(xmlNode.Ptr.parent), xmlNode.Document)
}