Function xmlDOMWrapStoreNs

ThirdParty/libxml2/vtklibxml2/tree.c:7962–7994

* xmlDOMWrapStoreNs: * @doc: the doc * @nsName: the namespace name * @prefix: the prefix * * Creates or reuses an xmlNs struct on doc->oldNs with * the given prefix and namespace name. * * Returns the acquired ns struct or NULL in case of an API * or internal error. */

*         or internal error.
*/
static xmlNsPtr
xmlDOMWrapStoreNs(xmlDocPtr doc,
		   const xmlChar *nsName,
		   const xmlChar *prefix)
{
    xmlNsPtr ns;

    if (doc == NULL)
	return (NULL);
    ns = xmlTreeEnsureXMLDecl(doc);
    if (ns == NULL)
	return (NULL);
    if (ns->next != NULL) {
	/* Reuse. */
	ns = ns->next;
	while (ns != NULL) {
	    if (((ns->prefix == prefix) ||
		xmlStrEqual(ns->prefix, prefix)) &&
		xmlStrEqual(ns->href, nsName)) {
		return (ns);
	    }
	    if (ns->next == NULL)
		break;
	    ns = ns->next;
	}
    }
    /* Create. */
    if (ns != NULL) {
        ns->next = xmlNewNs(NULL, nsName, prefix);
        return (ns->next);
    }
    return(NULL);
}

/*
* xmlDOMWrapNewCtxt: