Function xmlXPtrRangeFunction

ThirdParty/libxml2/vtklibxml2/xpointer.c:2020–2068

* xmlXPtrRangeFunction: * @ctxt: the XPointer Parser context * @nargs: the number of args * * Function implementing the range() function 5.4.3 * location-set range(location-set ) * * The range function returns ranges covering the locations in * the argument location-set. For each location x in the argument * location-set, a range location representing the covering range of * x is

 *  x is added to the result location-set.
 */
static void
xmlXPtrRangeFunction(xmlXPathParserContextPtr ctxt, int nargs) {
    int i;
    xmlXPathObjectPtr set;
    xmlLocationSetPtr oldset;
    xmlLocationSetPtr newset;

    CHECK_ARITY(1);
    if ((ctxt->value == NULL) ||
	((ctxt->value->type != XPATH_LOCATIONSET) &&
	 (ctxt->value->type != XPATH_NODESET)))
        XP_ERROR(XPATH_INVALID_TYPE)

    set = valuePop(ctxt);
    if (set->type == XPATH_NODESET) {
	xmlXPathObjectPtr tmp;

	/*
	 * First convert to a location set
	 */
	tmp = xmlXPtrNewLocationSetNodeSet(set->nodesetval);
	xmlXPathFreeObject(set);
	if (tmp == NULL)
            XP_ERROR(XPATH_MEMORY_ERROR)
	set = tmp;
    }
    oldset = (xmlLocationSetPtr) set->user;

    /*
     * The loop is to compute the covering range for each item and add it
     */
    newset = xmlXPtrLocationSetCreate(NULL);
    if (newset == NULL) {
	xmlXPathFreeObject(set);
        XP_ERROR(XPATH_MEMORY_ERROR);
    }
    if (oldset != NULL) {
        for (i = 0;i < oldset->locNr;i++) {
            xmlXPtrLocationSetAdd(newset,
                    xmlXPtrCoveringRange(ctxt, oldset->locTab[i]));
        }
    }

    /*
     * Save the new value and cleanup
     */
    valuePush(ctxt, xmlXPtrWrapLocationSet(newset));
    xmlXPathFreeObject(set);
}

/**
 * xmlXPtrInsideRange: