Function xmlSetTreeDoc

ThirdParty/libxml2/vtklibxml2/tree.c:2861–2910

* xmlSetTreeDoc: * @tree: root of a subtree * @doc: new document * * This is an internal function which shouldn't be used. It is * invoked by functions like xmlAddChild, xmlAddSibling or * xmlReplaceNode. @tree must be the root node of an unlinked * subtree. * * Associate all nodes in a tree with a new document. * * Also copy strings from the old document's dictionary and * remove ID

 * may be lost.
 */
int
xmlSetTreeDoc(xmlNodePtr tree, xmlDocPtr doc) {
    int ret = 0;
    xmlDocPtr oldDoc;

    if ((tree == NULL) || (tree->type == XML_NAMESPACE_DECL))
	return(0);
    oldDoc = tree->doc;
    if (oldDoc == doc)
        return(0);

    if (tree->type == XML_ELEMENT_NODE) {
        xmlAttrPtr prop = tree->properties;

        while (prop != NULL) {
            if (prop->children != NULL) {
                if (xmlSetListDoc(prop->children, doc) < 0)
                    ret = -1;
            }

            if (xmlNodeSetDoc((xmlNodePtr) prop, doc) < 0)
                ret = -1;

            prop = prop->next;
        }
    }

    if ((tree->children != NULL) &&
        (tree->type != XML_ENTITY_REF_NODE)) {
        if (xmlSetListDoc(tree->children, doc) < 0)
            ret = -1;
    }

    if (xmlNodeSetDoc(tree, doc) < 0)
        ret = -1;

    /*
     * Reconcile namespaces when moving between documents.
     * This prevents use-after-free when namespaces from the old
     * document are accessed after the old document is freed.
     */
    if ((ret == 0) && (oldDoc != doc) && (tree->type == XML_ELEMENT_NODE)) {
        if (xmlReconciliateNs(doc, tree) < 0) {
            /* Reconciliation failed, but document was already changed */
            ret = -1;
        }
    }

    return(ret);
}

/**
 * xmlSetListDoc: