xml_common.h

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/*
  +----------------------------------------------------------------------+
  | 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>                            |
  +----------------------------------------------------------------------+
*/
 
#ifndef PHP_XML_COMMON_H
#define PHP_XML_COMMON_H
 
#include "ext/libxml/php_libxml.h"
 
typedef libxml_doc_props *dom_doc_propsptr;
 
typedef struct _dom_object {
    void *ptr;
    php_libxml_ref_obj *document;
    HashTable *prop_handler;
    zend_object std;
} dom_object;
 
static inline dom_object *php_dom_obj_from_obj(zend_object *obj) {
    return (dom_object*)((char*)(obj) - XtOffsetOf(dom_object, std));
}
 
#define Z_DOMOBJ_P(zv)  php_dom_obj_from_obj(Z_OBJ_P((zv)))
 
#ifdef PHP_WIN32
#   ifdef DOM_EXPORTS
#       define PHP_DOM_EXPORT __declspec(dllexport)
#   elif !defined(DOM_LOCAL_DEFINES) /* Allow to counteract LNK4049 warning. */
#       define PHP_DOM_EXPORT __declspec(dllimport)
#   else
#       define PHP_DOM_EXPORT
#   endif /* DOM_EXPORTS */
#elif defined(__GNUC__) && __GNUC__ >= 4
#   define PHP_DOM_EXPORT __attribute__ ((visibility("default")))
#elif defined(PHPAPI)
#   define PHP_DOM_EXPORT PHPAPI
#else
#   define PHP_DOM_EXPORT
#endif
 
PHP_DOM_EXPORT extern zend_class_entry *dom_node_class_entry;
PHP_DOM_EXPORT dom_object *php_dom_object_get_data(xmlNodePtr obj);
PHP_DOM_EXPORT bool php_dom_create_object(xmlNodePtr obj, zval* return_value, dom_object *domobj);
PHP_DOM_EXPORT xmlNodePtr dom_object_get_node(dom_object *obj);
 
#define NODE_GET_OBJ(__ptr, __id, __prtype, __intern) { \
    __intern = Z_LIBXML_NODE_P(__id); \
    if (UNEXPECTED(__intern->node == NULL)) { \
        php_error_docref(NULL, E_WARNING, "Couldn't fetch %s", \
            ZSTR_VAL(Z_OBJCE_P(__zv)->name));\
        RETURN_NULL();\
    } \
    __ptr = (__prtype)__intern->node->node; \
}
 
#define DOC_GET_OBJ(__ptr, __id, __prtype, __intern) { \
    __intern = Z_LIBXML_NODE_P(__id); \
    if (EXPECTED(__intern->document != NULL)) { \
        __ptr = (__prtype)__intern->document->ptr); \
    } \
}
 
#define DOM_RET_OBJ(obj, domobject) \
    php_dom_create_object(obj, return_value, domobject)
 
#define DOM_GET_THIS_OBJ(__ptr, __id, __prtype, __intern) \
    __id = ZEND_THIS; \
    DOM_GET_OBJ(__ptr, __id, __prtype, __intern);
 
struct php_dom_private_data;
typedef struct php_dom_private_data php_dom_private_data;
 
static zend_always_inline php_dom_private_data *php_dom_get_private_data(dom_object *intern)
{
    ZEND_ASSERT(intern->document != NULL);
    return (php_dom_private_data *) intern->document->private_data;
}
 
static zend_always_inline xmlNodePtr php_dom_next_in_tree_order(const xmlNode *nodep, const xmlNode *basep)
{
    if (nodep->type == XML_ELEMENT_NODE && nodep->children) {
        return nodep->children;
    }
 
    if (nodep->next) {
        return nodep->next;
    } else {
        /* Go upwards, until we find a parent node with a next sibling, or until we hit the base. */
        do {
            nodep = nodep->parent;
            if (nodep == basep) {
                return NULL;
            }
            /* This shouldn't happen, unless there's an invalidation bug somewhere. */
            if (UNEXPECTED(nodep == NULL)) {
                zend_throw_error(NULL, "Current node in traversal is not in the document. Please report this as a bug in php-src.");
                return NULL;
            }
        } while (nodep->next == NULL);
        return nodep->next;
    }
}
 
static zend_always_inline bool php_dom_follow_spec_doc_ref(const php_libxml_ref_obj *document)
{
    return document != NULL && document->class_type == PHP_LIBXML_CLASS_MODERN;
}
 
static zend_always_inline bool php_dom_follow_spec_intern(const dom_object *intern)
{
    ZEND_ASSERT(intern != NULL);
    return php_dom_follow_spec_doc_ref(intern->document);
}
 
#endif