1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 7 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1997-2017 The PHP Group |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 3.01 of the PHP license, |
8 | that is bundled with this package in the file LICENSE, and is |
9 | available through the world-wide-web at the following url: |
10 | http://www.php.net/license/3_01.txt |
11 | If you did not receive a copy of the PHP license and are unable to |
12 | obtain it through the world-wide-web, please send a note to |
13 | license@php.net so we can mail you a copy immediately. |
14 +----------------------------------------------------------------------+
15 | Authors: Christian Stocker <chregu@php.net> |
16 | Rob Richards <rrichards@php.net> |
17 +----------------------------------------------------------------------+
18 */
19
20 /* $Id$ */
21
22 #ifdef HAVE_CONFIG_H
23 #include "config.h"
24 #endif
25
26 #include "php.h"
27 #if HAVE_LIBXML && HAVE_DOM
28 #include "php_dom.h"
29 #include "dom_ce.h"
30
31 typedef struct _nodeIterator nodeIterator;
32 struct _nodeIterator {
33 int cur;
34 int index;
35 xmlNode *node;
36 };
37
38 typedef struct _notationIterator notationIterator;
39 struct _notationIterator {
40 int cur;
41 int index;
42 xmlNotation *notation;
43 };
44
itemHashScanner(void * payload,void * data,xmlChar * name)45 static void itemHashScanner (void *payload, void *data, xmlChar *name) /* {{{ */
46 {
47 nodeIterator *priv = (nodeIterator *)data;
48
49 if(priv->cur < priv->index) {
50 priv->cur++;
51 } else {
52 if(priv->node == NULL) {
53 priv->node = (xmlNode *)payload;
54 }
55 }
56 }
57 /* }}} */
58
create_notation(const xmlChar * name,const xmlChar * ExternalID,const xmlChar * SystemID)59 xmlNodePtr create_notation(const xmlChar *name, const xmlChar *ExternalID, const xmlChar *SystemID) /* {{{ */
60 {
61 xmlEntityPtr ret;
62
63 ret = (xmlEntityPtr) xmlMalloc(sizeof(xmlEntity));
64 memset(ret, 0, sizeof(xmlEntity));
65 ret->type = XML_NOTATION_NODE;
66 ret->name = xmlStrdup(name);
67 ret->ExternalID = xmlStrdup(ExternalID);
68 ret->SystemID = xmlStrdup(SystemID);
69 ret->length = 0;
70 ret->content = NULL;
71 ret->URI = NULL;
72 ret->orig = NULL;
73 ret->children = NULL;
74 ret->parent = NULL;
75 ret->doc = NULL;
76 ret->_private = NULL;
77 ret->last = NULL;
78 ret->prev = NULL;
79 return((xmlNodePtr) ret);
80 }
81 /* }}} */
82
php_dom_libxml_hash_iter(xmlHashTable * ht,int index)83 xmlNode *php_dom_libxml_hash_iter(xmlHashTable *ht, int index) /* {{{ */
84 {
85 xmlNode *nodep = NULL;
86 nodeIterator *iter;
87 int htsize;
88
89 if ((htsize = xmlHashSize(ht)) > 0 && index < htsize) {
90 iter = emalloc(sizeof(nodeIterator));
91 iter->cur = 0;
92 iter->index = index;
93 iter->node = NULL;
94 xmlHashScan(ht, itemHashScanner, iter);
95 nodep = iter->node;
96 efree(iter);
97 return nodep;
98 } else {
99 return NULL;
100 }
101 }
102 /* }}} */
103
php_dom_libxml_notation_iter(xmlHashTable * ht,int index)104 xmlNode *php_dom_libxml_notation_iter(xmlHashTable *ht, int index) /* {{{ */
105 {
106 notationIterator *iter;
107 xmlNotation *notep = NULL;
108 int htsize;
109
110 if ((htsize = xmlHashSize(ht)) > 0 && index < htsize) {
111 iter = emalloc(sizeof(notationIterator));
112 iter->cur = 0;
113 iter->index = index;
114 iter->notation = NULL;
115 xmlHashScan(ht, itemHashScanner, iter);
116 notep = iter->notation;
117 efree(iter);
118 return create_notation(notep->name, notep->PublicID, notep->SystemID);
119 } else {
120 return NULL;
121 }
122 }
123 /* }}} */
124
php_dom_iterator_dtor(zend_object_iterator * iter)125 static void php_dom_iterator_dtor(zend_object_iterator *iter) /* {{{ */
126 {
127 php_dom_iterator *iterator = (php_dom_iterator *)iter;
128
129 zval_ptr_dtor(&iterator->intern.data);
130 zval_ptr_dtor(&iterator->curobj);
131 }
132 /* }}} */
133
php_dom_iterator_valid(zend_object_iterator * iter)134 static int php_dom_iterator_valid(zend_object_iterator *iter) /* {{{ */
135 {
136
137 php_dom_iterator *iterator = (php_dom_iterator *)iter;
138
139 if (Z_TYPE(iterator->curobj) != IS_UNDEF) {
140 return SUCCESS;
141 } else {
142 return FAILURE;
143 }
144 }
145 /* }}} */
146
php_dom_iterator_current_data(zend_object_iterator * iter)147 zval *php_dom_iterator_current_data(zend_object_iterator *iter) /* {{{ */
148 {
149 php_dom_iterator *iterator = (php_dom_iterator *)iter;
150
151 return &iterator->curobj;
152 }
153 /* }}} */
154
php_dom_iterator_current_key(zend_object_iterator * iter,zval * key)155 static void php_dom_iterator_current_key(zend_object_iterator *iter, zval *key) /* {{{ */
156 {
157 php_dom_iterator *iterator = (php_dom_iterator *)iter;
158 zval *object = &iterator->intern.data;
159
160 if (instanceof_function(Z_OBJCE_P(object), dom_nodelist_class_entry)) {
161 ZVAL_LONG(key, iter->index);
162 } else {
163 dom_object *intern = Z_DOMOBJ_P(&iterator->curobj);
164
165 if (intern != NULL && intern->ptr != NULL) {
166 xmlNodePtr curnode = (xmlNodePtr)((php_libxml_node_ptr *)intern->ptr)->node;
167 ZVAL_STRINGL(key, (char *) curnode->name, xmlStrlen(curnode->name));
168 } else {
169 ZVAL_NULL(key);
170 }
171 }
172 }
173 /* }}} */
174
php_dom_iterator_move_forward(zend_object_iterator * iter)175 static void php_dom_iterator_move_forward(zend_object_iterator *iter) /* {{{ */
176 {
177 zval *object;
178 xmlNodePtr curnode = NULL, basenode;
179 dom_object *intern;
180 dom_object *nnmap;
181 dom_nnodemap_object *objmap;
182 int previndex=0;
183 HashTable *nodeht;
184 zval *entry;
185 zend_bool do_curobj_undef = 1;
186
187 php_dom_iterator *iterator = (php_dom_iterator *)iter;
188
189 object = &iterator->intern.data;
190 nnmap = Z_DOMOBJ_P(object);
191 objmap = (dom_nnodemap_object *)nnmap->ptr;
192
193 intern = Z_DOMOBJ_P(&iterator->curobj);
194
195 if (intern != NULL && intern->ptr != NULL) {
196 if (objmap->nodetype != XML_ENTITY_NODE &&
197 objmap->nodetype != XML_NOTATION_NODE) {
198 if (objmap->nodetype == DOM_NODESET) {
199 nodeht = HASH_OF(&objmap->baseobj_zv);
200 zend_hash_move_forward(nodeht);
201 if ((entry = zend_hash_get_current_data(nodeht))) {
202 zval_ptr_dtor(&iterator->curobj);
203 ZVAL_UNDEF(&iterator->curobj);
204 ZVAL_COPY(&iterator->curobj, entry);
205 do_curobj_undef = 0;
206 }
207 } else {
208 curnode = (xmlNodePtr)((php_libxml_node_ptr *)intern->ptr)->node;
209 if (objmap->nodetype == XML_ATTRIBUTE_NODE ||
210 objmap->nodetype == XML_ELEMENT_NODE) {
211 curnode = curnode->next;
212 } else {
213 /* Nav the tree evey time as this is LIVE */
214 basenode = dom_object_get_node(objmap->baseobj);
215 if (basenode && (basenode->type == XML_DOCUMENT_NODE ||
216 basenode->type == XML_HTML_DOCUMENT_NODE)) {
217 basenode = xmlDocGetRootElement((xmlDoc *) basenode);
218 } else if (basenode) {
219 basenode = basenode->children;
220 } else {
221 goto err;
222 }
223 curnode = dom_get_elements_by_tag_name_ns_raw(
224 basenode, (char *) objmap->ns, (char *) objmap->local, &previndex, iter->index);
225 }
226 }
227 } else {
228 if (objmap->nodetype == XML_ENTITY_NODE) {
229 curnode = php_dom_libxml_hash_iter(objmap->ht, iter->index);
230 } else {
231 curnode = php_dom_libxml_notation_iter(objmap->ht, iter->index);
232 }
233 }
234 }
235 err:
236 if (do_curobj_undef) {
237 zval_ptr_dtor(&iterator->curobj);
238 ZVAL_UNDEF(&iterator->curobj);
239 }
240 if (curnode) {
241 php_dom_create_object(curnode, &iterator->curobj, objmap->baseobj);
242 }
243 }
244 /* }}} */
245
246 zend_object_iterator_funcs php_dom_iterator_funcs = {
247 php_dom_iterator_dtor,
248 php_dom_iterator_valid,
249 php_dom_iterator_current_data,
250 php_dom_iterator_current_key,
251 php_dom_iterator_move_forward,
252 NULL
253 };
254
php_dom_get_iterator(zend_class_entry * ce,zval * object,int by_ref)255 zend_object_iterator *php_dom_get_iterator(zend_class_entry *ce, zval *object, int by_ref) /* {{{ */
256 {
257 dom_object *intern;
258 dom_nnodemap_object *objmap;
259 xmlNodePtr nodep, curnode=NULL;
260 int curindex = 0;
261 HashTable *nodeht;
262 zval *entry;
263 php_dom_iterator *iterator;
264
265 if (by_ref) {
266 zend_error(E_ERROR, "An iterator cannot be used with foreach by reference");
267 }
268 iterator = emalloc(sizeof(php_dom_iterator));
269 zend_iterator_init(&iterator->intern);
270
271 ZVAL_COPY(&iterator->intern.data, object);
272 iterator->intern.funcs = &php_dom_iterator_funcs;
273
274 ZVAL_UNDEF(&iterator->curobj);
275
276 intern = Z_DOMOBJ_P(object);
277 objmap = (dom_nnodemap_object *)intern->ptr;
278 if (objmap != NULL) {
279 if (objmap->nodetype != XML_ENTITY_NODE &&
280 objmap->nodetype != XML_NOTATION_NODE) {
281 if (objmap->nodetype == DOM_NODESET) {
282 nodeht = HASH_OF(&objmap->baseobj_zv);
283 zend_hash_internal_pointer_reset(nodeht);
284 if ((entry = zend_hash_get_current_data(nodeht))) {
285 ZVAL_COPY(&iterator->curobj, entry);
286 }
287 } else {
288 nodep = (xmlNode *)dom_object_get_node(objmap->baseobj);
289 if (!nodep) {
290 goto err;
291 }
292 if (objmap->nodetype == XML_ATTRIBUTE_NODE || objmap->nodetype == XML_ELEMENT_NODE) {
293 if (objmap->nodetype == XML_ATTRIBUTE_NODE) {
294 curnode = (xmlNodePtr) nodep->properties;
295 } else {
296 curnode = (xmlNodePtr) nodep->children;
297 }
298 } else {
299 if (nodep->type == XML_DOCUMENT_NODE || nodep->type == XML_HTML_DOCUMENT_NODE) {
300 nodep = xmlDocGetRootElement((xmlDoc *) nodep);
301 } else {
302 nodep = nodep->children;
303 }
304 curnode = dom_get_elements_by_tag_name_ns_raw(
305 nodep, (char *) objmap->ns, (char *) objmap->local, &curindex, 0);
306 }
307 }
308 } else {
309 if (objmap->nodetype == XML_ENTITY_NODE) {
310 curnode = php_dom_libxml_hash_iter(objmap->ht, 0);
311 } else {
312 curnode = php_dom_libxml_notation_iter(objmap->ht, 0);
313 }
314 }
315 }
316 err:
317 if (curnode) {
318 php_dom_create_object(curnode, &iterator->curobj, objmap->baseobj);
319 }
320
321 return &iterator->intern;
322 }
323 /* }}} */
324
325 #endif
326
327 /*
328 * Local variables:
329 * tab-width: 4
330 * c-basic-offset: 4
331 * End:
332 * vim600: noet sw=4 ts=4 fdm=marker
333 * vim<600: noet sw=4 ts=4
334 */
335
