func NewXPathExpression(s string) (*XPathExpression, error) {
p := C.xmlXPathCompile(stringToXmlChar(s))
if p == nil {
return nil, errors.New("xpath compilation failed")
}
return &XPathExpression{ptr: p, expr: s}, nil
}
func Compile(path string) (expr *Expression) {
if len(path) == 0 {
return
}
xpathBytes := GetCString([]byte(path))
xpathPtr := unsafe.Pointer(&xpathBytes[0])
ptr := C.xmlXPathCompile((*C.xmlChar)(xpathPtr))
if ptr == nil {
return
}
expr = &Expression{Ptr: ptr, xpath: path}
//runtime.SetFinalizer(expr, (*Expression).Free)
return
}
// xmlXPathCompile
func CompileXPath(str string) *XPath {
ptr := C.CString(str)
defer C.free_string(ptr)
return makeXpath(C.xmlXPathCompile(C.to_xmlcharptr(ptr)))
}