Function xmlNewChild

ThirdParty/libxml2/vtklibxml2/tree.c:2966–3008

* xmlNewChild: * @parent: the parent node * @ns: a namespace (optional) * @name: the name of the child * @content: text content with XML references (optional) * * Create a new child element and append it to a parent element. * * If @ns is NULL, the newly created element inherits the namespace * of the parent. * * If provided, @content is expected to be a valid XML attribute * value

 * are invalid or a memory allocation failed.
 */
xmlNodePtr
xmlNewChild(xmlNodePtr parent, xmlNsPtr ns,
            const xmlChar *name, const xmlChar *content) {
    xmlNodePtr cur, prev;

    if ((parent == NULL) || (name == NULL))
	return(NULL);

    switch (parent->type) {
        case XML_DOCUMENT_NODE:
        case XML_HTML_DOCUMENT_NODE:
        case XML_DOCUMENT_FRAG_NODE:
            break;

        case XML_ELEMENT_NODE:
            if (ns == NULL)
                ns = parent->ns;
            break;

        default:
            return(NULL);
    }

    cur = xmlNewDocNode(parent->doc, ns, name, content);
    if (cur == NULL)
        return(NULL);

    /*
     * add the new element at the end of the children list.
     */
    cur->parent = parent;
    if (parent->children == NULL) {
        parent->children = cur;
	parent->last = cur;
    } else {
        prev = parent->last;
	prev->next = cur;
	cur->prev = prev;
	parent->last = cur;
    }

    return(cur);
}
#endif /* LIBXML_TREE_ENABLED */

static void