Function xmlAddChild

ThirdParty/libxml2/vtklibxml2/tree.c:3401–3435

* xmlAddChild: * @parent: the parent node * @cur: the child node * * Unlink @cur and append it to the children of @parent. * * If @cur is a text node, it may be merged with an adjacent text * node and freed. In this case the text node containing the merged * content is returned. * * If @cur is an attribute node, it is appended to the attributes of * @parent. If the attribute list cont

 * if arguments are invalid or a memory allocation failed.
 */
xmlNodePtr
xmlAddChild(xmlNodePtr parent, xmlNodePtr cur) {
    xmlNodePtr prev;

    if ((parent == NULL) || (parent->type == XML_NAMESPACE_DECL) ||
        (cur == NULL) || (cur->type == XML_NAMESPACE_DECL) ||
        (parent == cur))
        return(NULL);

    /*
     * If parent is a text node, call xmlTextAddContent. This
     * undocumented quirk should probably be removed.
     */
    if (parent->type == XML_TEXT_NODE) {
        if (xmlTextAddContent(parent, cur->content, -1) < 0)
            return(NULL);
        xmlFreeNode(cur);
        return(parent);
    }

    if (cur->type == XML_ATTRIBUTE_NODE) {
        prev = (xmlNodePtr) parent->properties;
        if (prev != NULL) {
            while (prev->next != NULL)
                prev = prev->next;
        }
    } else {
        prev = parent->last;
    }

    if (cur == prev)
        return(cur);

    return(xmlInsertNode(parent->doc, cur, parent, prev, NULL, 1));
}

/**
 * xmlGetLastChild: