Function xmlGetNsListSafe

ThirdParty/libxml2/vtklibxml2/tree.c:5912–5963

* xmlGetNsListSafe: * @doc: the document * @node: the current node * @out: the returned namespace array * * Find all in-scope namespaces of a node. @out returns a NULL * terminated array of namespace pointers that must be freed by * the caller. * * Available since 2.13.0. * * Returns 0 on success, 1 if no namespaces were found, -1 if a * memory allocation failed. */

 * memory allocation failed.
 */
int
xmlGetNsListSafe(const xmlDoc *doc ATTRIBUTE_UNUSED, const xmlNode *node,
                 xmlNsPtr **out)
{
    xmlNsPtr cur;
    xmlNsPtr *namespaces = NULL;
    int nbns = 0;
    int maxns = 0;
    int i;

    if (out == NULL)
        return(1);
    *out = NULL;
    if ((node == NULL) || (node->type == XML_NAMESPACE_DECL))
        return(1);

    while (node != NULL) {
        if (node->type == XML_ELEMENT_NODE) {
            cur = node->nsDef;
            while (cur != NULL) {
                for (i = 0; i < nbns; i++) {
                    if ((cur->prefix == namespaces[i]->prefix) ||
                        (xmlStrEqual(cur->prefix, namespaces[i]->prefix)))
                        break;
                }
                if (i >= nbns) {
                    if (nbns >= maxns) {
                        xmlNsPtr *tmp;

                        maxns = maxns ? maxns * 2 : 10;
                        tmp = (xmlNsPtr *) xmlRealloc(namespaces,
                                                      (maxns + 1) *
                                                      sizeof(xmlNsPtr));
                        if (tmp == NULL) {
                            xmlFree(namespaces);
                            return(-1);
                        }
                        namespaces = tmp;
                    }
                    namespaces[nbns++] = cur;
                    namespaces[nbns] = NULL;
                }

                cur = cur->next;
            }
        }
        node = node->parent;
    }

    *out = namespaces;
    return((namespaces == NULL) ? 1 : 0);
}

/**
 * xmlGetNsList: