mirror of
https://github.com/php/php-src.git
synced 2024-09-21 18:07:23 +00:00
266 lines
8.1 KiB
C
266 lines
8.1 KiB
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: Christian Stocker <chregu@php.net> |
|
|
| Rob Richards <rrichards@php.net> |
|
|
+----------------------------------------------------------------------+
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "php.h"
|
|
#if defined(HAVE_LIBXML) && defined(HAVE_DOM)
|
|
#include "php_dom.h"
|
|
#include "zend_interfaces.h"
|
|
|
|
/*
|
|
* class DOMNodeList
|
|
*
|
|
* URL: https://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#ID-536297177
|
|
* Since:
|
|
*/
|
|
|
|
static zend_always_inline void objmap_cache_release_cached_obj(dom_nnodemap_object *objmap)
|
|
{
|
|
if (objmap->cached_obj) {
|
|
/* Since the DOM is a tree there can be no cycles. */
|
|
if (GC_DELREF(&objmap->cached_obj->std) == 0) {
|
|
zend_objects_store_del(&objmap->cached_obj->std);
|
|
}
|
|
objmap->cached_obj = NULL;
|
|
objmap->cached_obj_index = 0;
|
|
}
|
|
}
|
|
|
|
static zend_always_inline void reset_objmap_cache(dom_nnodemap_object *objmap)
|
|
{
|
|
objmap_cache_release_cached_obj(objmap);
|
|
objmap->cached_length = -1;
|
|
}
|
|
|
|
int php_dom_get_nodelist_length(dom_object *obj)
|
|
{
|
|
dom_nnodemap_object *objmap = (dom_nnodemap_object *) obj->ptr;
|
|
if (!objmap) {
|
|
return 0;
|
|
}
|
|
|
|
if (objmap->ht) {
|
|
return xmlHashSize(objmap->ht);
|
|
}
|
|
|
|
if (objmap->nodetype == DOM_NODESET) {
|
|
HashTable *nodeht = HASH_OF(&objmap->baseobj_zv);
|
|
return zend_hash_num_elements(nodeht);
|
|
}
|
|
|
|
xmlNodePtr nodep = dom_object_get_node(objmap->baseobj);
|
|
if (!nodep) {
|
|
return 0;
|
|
}
|
|
|
|
if (!php_dom_is_cache_tag_stale_from_node(&objmap->cache_tag, nodep)) {
|
|
if (objmap->cached_length >= 0) {
|
|
return objmap->cached_length;
|
|
}
|
|
/* Only the length is out-of-date, the cache tag is still valid.
|
|
* Therefore, only overwrite the length and keep the currently cached object. */
|
|
} else {
|
|
php_dom_mark_cache_tag_up_to_date_from_node(&objmap->cache_tag, nodep);
|
|
reset_objmap_cache(objmap);
|
|
}
|
|
|
|
int count = 0;
|
|
if (objmap->nodetype == XML_ATTRIBUTE_NODE || objmap->nodetype == XML_ELEMENT_NODE) {
|
|
xmlNodePtr curnode = nodep->children;
|
|
if (curnode) {
|
|
count++;
|
|
while (curnode->next != NULL) {
|
|
count++;
|
|
curnode = curnode->next;
|
|
}
|
|
}
|
|
} else {
|
|
xmlNodePtr basep = nodep;
|
|
if (nodep->type == XML_DOCUMENT_NODE || nodep->type == XML_HTML_DOCUMENT_NODE) {
|
|
nodep = xmlDocGetRootElement((xmlDoc *) nodep);
|
|
} else {
|
|
nodep = nodep->children;
|
|
}
|
|
dom_get_elements_by_tag_name_ns_raw(
|
|
basep, nodep, (char *) objmap->ns, (char *) objmap->local, &count, INT_MAX - 1 /* because of <= */);
|
|
}
|
|
|
|
objmap->cached_length = count;
|
|
|
|
return count;
|
|
}
|
|
|
|
/* {{{ length int
|
|
readonly=yes
|
|
URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#ID-203510337
|
|
Since:
|
|
*/
|
|
int dom_nodelist_length_read(dom_object *obj, zval *retval)
|
|
{
|
|
ZVAL_LONG(retval, php_dom_get_nodelist_length(obj));
|
|
return SUCCESS;
|
|
}
|
|
|
|
|
|
/* {{{ */
|
|
PHP_METHOD(DOMNodeList, count)
|
|
{
|
|
zval *id;
|
|
dom_object *intern;
|
|
|
|
id = ZEND_THIS;
|
|
if (zend_parse_parameters_none() == FAILURE) {
|
|
RETURN_THROWS();
|
|
}
|
|
|
|
intern = Z_DOMOBJ_P(id);
|
|
RETURN_LONG(php_dom_get_nodelist_length(intern));
|
|
}
|
|
/* }}} end dom_nodelist_count */
|
|
|
|
void php_dom_nodelist_get_item_into_zval(dom_nnodemap_object *objmap, zend_long index, zval *return_value)
|
|
{
|
|
int ret;
|
|
xmlNodePtr itemnode = NULL;
|
|
bool cache_itemnode = false;
|
|
if (index >= 0) {
|
|
if (objmap != NULL) {
|
|
if (objmap->ht) {
|
|
if (objmap->nodetype == XML_ENTITY_NODE) {
|
|
itemnode = php_dom_libxml_hash_iter(objmap->ht, index);
|
|
} else {
|
|
itemnode = php_dom_libxml_notation_iter(objmap->ht, index);
|
|
}
|
|
} else {
|
|
if (objmap->nodetype == DOM_NODESET) {
|
|
HashTable *nodeht = HASH_OF(&objmap->baseobj_zv);
|
|
zval *entry = zend_hash_index_find(nodeht, index);
|
|
if (entry) {
|
|
ZVAL_COPY(return_value, entry);
|
|
return;
|
|
}
|
|
} else if (objmap->baseobj) {
|
|
xmlNodePtr basep = dom_object_get_node(objmap->baseobj);
|
|
if (basep) {
|
|
xmlNodePtr nodep = basep;
|
|
/* For now we're only able to use cache for forward search.
|
|
* TODO: in the future we could extend the logic of the node list such that backwards searches
|
|
* are also possible. */
|
|
bool restart = true;
|
|
int relative_index = index;
|
|
if (index >= objmap->cached_obj_index && objmap->cached_obj && !php_dom_is_cache_tag_stale_from_node(&objmap->cache_tag, nodep)) {
|
|
xmlNodePtr cached_obj_xml_node = dom_object_get_node(objmap->cached_obj);
|
|
|
|
/* The node cannot be NULL if the cache is valid. If it is NULL, then it means we
|
|
* forgot an invalidation somewhere. Take the defensive programming approach and invalidate
|
|
* it here if it's NULL (except in debug mode where we would want to catch this). */
|
|
if (UNEXPECTED(cached_obj_xml_node == NULL)) {
|
|
#if ZEND_DEBUG
|
|
ZEND_UNREACHABLE();
|
|
#endif
|
|
reset_objmap_cache(objmap);
|
|
} else {
|
|
restart = false;
|
|
relative_index -= objmap->cached_obj_index;
|
|
nodep = cached_obj_xml_node;
|
|
}
|
|
}
|
|
int count = 0;
|
|
if (objmap->nodetype == XML_ATTRIBUTE_NODE || objmap->nodetype == XML_ELEMENT_NODE) {
|
|
if (restart) {
|
|
nodep = nodep->children;
|
|
}
|
|
while (count < relative_index && nodep != NULL) {
|
|
count++;
|
|
nodep = nodep->next;
|
|
}
|
|
itemnode = nodep;
|
|
} else {
|
|
if (restart) {
|
|
if (basep->type == XML_DOCUMENT_NODE || basep->type == XML_HTML_DOCUMENT_NODE) {
|
|
nodep = xmlDocGetRootElement((xmlDoc*) basep);
|
|
} else {
|
|
nodep = basep->children;
|
|
}
|
|
}
|
|
itemnode = dom_get_elements_by_tag_name_ns_raw(basep, nodep, (char *) objmap->ns, (char *) objmap->local, &count, relative_index);
|
|
}
|
|
cache_itemnode = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (itemnode) {
|
|
DOM_RET_OBJ(itemnode, &ret, objmap->baseobj);
|
|
if (cache_itemnode) {
|
|
/* Hold additional reference for the cache, must happen before releasing the cache
|
|
* because we might be the last reference holder.
|
|
* Instead of storing and copying zvals, we store the object pointer directly.
|
|
* This saves us some bytes because a pointer is smaller than a zval.
|
|
* This also means we have to manually refcount the objects here, and remove the reference count
|
|
* in reset_objmap_cache() and the destructor. */
|
|
dom_object *cached_obj = Z_DOMOBJ_P(return_value);
|
|
GC_ADDREF(&cached_obj->std);
|
|
/* If the tag is stale, all cached data is useless. Otherwise only the cached object is useless. */
|
|
if (php_dom_is_cache_tag_stale_from_node(&objmap->cache_tag, itemnode)) {
|
|
php_dom_mark_cache_tag_up_to_date_from_node(&objmap->cache_tag, itemnode);
|
|
reset_objmap_cache(objmap);
|
|
} else {
|
|
objmap_cache_release_cached_obj(objmap);
|
|
}
|
|
objmap->cached_obj_index = index;
|
|
objmap->cached_obj = cached_obj;
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
RETVAL_NULL();
|
|
}
|
|
|
|
/* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#ID-844377136
|
|
Since:
|
|
*/
|
|
PHP_METHOD(DOMNodeList, item)
|
|
{
|
|
zend_long index;
|
|
ZEND_PARSE_PARAMETERS_START(1, 1)
|
|
Z_PARAM_LONG(index)
|
|
ZEND_PARSE_PARAMETERS_END();
|
|
|
|
zval *id = ZEND_THIS;
|
|
dom_object *intern = Z_DOMOBJ_P(id);
|
|
dom_nnodemap_object *objmap = intern->ptr;
|
|
php_dom_nodelist_get_item_into_zval(objmap, index, return_value);
|
|
}
|
|
/* }}} end dom_nodelist_item */
|
|
|
|
ZEND_METHOD(DOMNodeList, getIterator)
|
|
{
|
|
if (zend_parse_parameters_none() == FAILURE) {
|
|
return;
|
|
}
|
|
|
|
zend_create_internal_iterator_zval(return_value, ZEND_THIS);
|
|
}
|
|
|
|
#endif
|