// C14n Canonicalise the node using the SAML specified exclusive method
// Very slow on large documents with node != nil
func (xp *Xp) C14n(node *C.xmlNode) string {
var buffer *C.xmlChar
var nodeset *C.xmlNodeSet
if node != nil {
C.xmlXPathSetContextNode(node, xp.xpathCtx)
xpathObj := C.xmlXPathEvalExpression(exclc14nxpath, xp.xpathCtx)
defer C.xmlXPathFreeObject(xpathObj)
nodeset = xpathObj.nodesetval
//fmt.Printf("%+v\n", nodeset)
}
C.xmlC14NDocDumpMemory(xp.doc, nodeset, C.XML_C14N_EXCLUSIVE_1_0, nil, 0, &buffer)
defer C.free(unsafe.Pointer(buffer))
p := (*C.char)(unsafe.Pointer(buffer))
return C.GoString(p)
}
func (n *xmlNode) ToStringC14N(exclusive bool) (string, error) {
var result *C.xmlChar
var exclInt C.int
if exclusive {
exclInt = 1
}
ret := C.xmlC14NDocDumpMemory(
n.ptr.doc,
nil,
exclInt,
nil,
0,
&result,
)
if ret == 0 {
return "", errors.New("Boo")
}
return xmlCharToString(result), nil
}