Function xmlSetNsProp

ThirdParty/libxml2/vtklibxml2/tree.c:6969–7025

* xmlSetNsProp: * @node: the node * @ns: the namespace definition * @name: the attribute name * @value: the attribute value * * Set (or reset) an attribute carried by a node. * The ns structure must be in scope, this is not checked * * Returns the attribute pointer. */

 * Returns the attribute pointer.
 */
xmlAttrPtr
xmlSetNsProp(xmlNodePtr node, xmlNsPtr ns, const xmlChar *name,
	     const xmlChar *value)
{
    xmlAttrPtr prop;

    if (ns && (ns->href == NULL))
	return(NULL);
    if (name == NULL)
        return(NULL);
    prop = xmlGetPropNodeInternal(node, name,
                                  (ns != NULL) ? ns->href : NULL, 0);
    if (prop != NULL) {
        xmlNodePtr children = NULL;

	/*
	* Modify the attribute's value.
	*/
        if (value != NULL) {
	    children = xmlNewDocText(node->doc, value);
            if (children == NULL)
                return(NULL);
        }

	if (prop->atype == XML_ATTRIBUTE_ID) {
	    xmlRemoveID(node->doc, prop);
	    prop->atype = XML_ATTRIBUTE_ID;
	}
	if (prop->children != NULL)
	    xmlFreeNodeList(prop->children);
	prop->children = NULL;
	prop->last = NULL;
	prop->ns = ns;
	if (value != NULL) {
	    xmlNodePtr tmp;

	    prop->children = children;
	    prop->last = NULL;
	    tmp = prop->children;
	    while (tmp != NULL) {
		tmp->parent = (xmlNodePtr) prop;
		if (tmp->next == NULL)
		    prop->last = tmp;
		tmp = tmp->next;
	    }
	}
	if ((prop->atype == XML_ATTRIBUTE_ID) &&
	    (xmlAddIDSafe(prop, value) < 0)) {
            return(NULL);
        }
	return(prop);
    }
    /*
    * No equal attr found; create a new one.
    */
    return(xmlNewPropInternal(node, ns, name, value, 0));
}