html_collection.c

/*
 +----------------------------------------------------------------------+
 | Copyright (c) The PHP Group |
 +----------------------------------------------------------------------+
 | This source file is subject to version 3.01 of the PHP license, |
 | that is bundled with this package in the file LICENSE, and is |
 | available through the world-wide-web at the following url: |
 | https://www.php.net/license/3_01.txt |
 | If you did not receive a copy of the PHP license and are unable to |
 | obtain it through the world-wide-web, please send a note to |
 | license@php.net so we can mail you a copy immediately. |
 +----------------------------------------------------------------------+
 | Authors: Niels Dossche <nielsdos@php.net> |
 +----------------------------------------------------------------------+
*/

#ifdefHAVE_CONFIG_H
#include<config.h>
#endif

#include"php.h"
#if defined(HAVE_LIBXML) && defined(HAVE_DOM)
#include"php_dom.h"
#include"nodelist.h"
#include"html_collection.h"
#include"namespace_compat.h"

typedefstructdom_named_item {
dom_object*context_intern;
xmlNodePtrnode;
} dom_named_item;

/* https://dom.spec.whatwg.org/#dom-htmlcollection-nameditem-key */
staticdom_named_itemdom_html_collection_named_item(zend_string*key, zend_object*zobj)
{
dom_named_itemret= {NULL, NULL};

/* 1. If key is the empty string, return null. */
if (ZSTR_LEN(key) ==0) {
returnret;
 }

dom_object*intern=php_dom_obj_from_obj(zobj);
dom_nnodemap_object*objmap=intern->ptr;

/* 2. Return the first element in the collection for which at least one of the following is true: */
xmlNodePtrbasep=dom_object_get_node(objmap->baseobj);
if (basep!=NULL) {
zend_longcur=0;
zend_longnext=cur; /* not +1, otherwise we skip the first candidate */
xmlNodePtrcandidate=basep->children;
while (candidate!=NULL) {
candidate=dom_get_elements_by_tag_name_ns_raw(basep, candidate, objmap->ns, objmap->local, objmap->local_lower, &cur, next);
if (candidate==NULL) {
break;
 }

xmlAttrPtrattr;

/* it has an ID which is key; */
if ((attr=xmlHasNsProp(candidate, BAD_CAST"id", NULL)) !=NULL&&dom_compare_value(attr, BAD_CASTZSTR_VAL(key))) {
ret.context_intern=objmap->baseobj;
ret.node=candidate;
returnret;
 }
/* it is in the HTML namespace and has a name attribute whose value is key; */
elseif (php_dom_ns_is_fast(candidate, php_dom_ns_is_html_magic_token)) {
if ((attr=xmlHasNsProp(candidate, BAD_CAST"name", NULL)) !=NULL&&dom_compare_value(attr, BAD_CASTZSTR_VAL(key))) {
ret.context_intern=objmap->baseobj;
ret.node=candidate;
returnret;
 }
 }

next=cur+1;
 }
 }

returnret;
}

staticvoiddom_html_collection_named_item_into_zval(zval*return_value, zend_string*key, zend_object*zobj)
{
dom_named_itemnamed_item=dom_html_collection_named_item(key, zobj);
if (named_item.node!=NULL) {
DOM_RET_OBJ(named_item.node, named_item.context_intern);
 } else {
RETURN_NULL();
 }
}

PHP_METHOD(Dom_HTMLCollection, namedItem)
{
zend_string*key;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_STR(key)
ZEND_PARSE_PARAMETERS_END();
dom_html_collection_named_item_into_zval(return_value, key, Z_OBJ_P(ZEND_THIS));
}

zval*dom_html_collection_read_dimension(zend_object*object, zval*offset, inttype, zval*rv)
{
if (UNEXPECTED(!offset)) {
zend_throw_error(NULL, "Cannot append to %s", ZSTR_VAL(object->ce->name));
returnNULL;
 }

dom_nodelist_dimension_indexindex=dom_modern_nodelist_get_index(offset);
if (UNEXPECTED(index.type==DOM_NODELIST_DIM_ILLEGAL)) {
zend_illegal_container_offset(object->ce->name, offset, type);
returnNULL;
 }

if (index.type==DOM_NODELIST_DIM_STRING) {
dom_html_collection_named_item_into_zval(rv, index.str, object);
 } else {
ZEND_ASSERT(index.type==DOM_NODELIST_DIM_LONG);
php_dom_nodelist_get_item_into_zval(php_dom_obj_from_obj(object)->ptr, index.lval, rv);
 }

returnrv;
}

intdom_html_collection_has_dimension(zend_object*object, zval*member, intcheck_empty)
{
/* If it exists, it cannot be empty because nodes aren't empty. */
ZEND_IGNORE_VALUE(check_empty);

dom_nodelist_dimension_indexindex=dom_modern_nodelist_get_index(member);
if (UNEXPECTED(index.type==DOM_NODELIST_DIM_ILLEGAL)) {
zend_illegal_container_offset(object->ce->name, member, BP_VAR_IS);
return0;
 }

if (index.type==DOM_NODELIST_DIM_STRING) {
returndom_html_collection_named_item(index.str, object).node!=NULL;
 } else {
ZEND_ASSERT(index.type==DOM_NODELIST_DIM_LONG);
returnindex.lval >= 0&&index.lval<php_dom_get_nodelist_length(php_dom_obj_from_obj(object));
 }
}

#endif