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authorNicolas Lœuillet <nicolas@loeuillet.org>2015-01-18 20:07:46 +0100
committerNicolas Lœuillet <nicolas@loeuillet.org>2015-01-18 20:07:46 +0100
commitadf17b677edeb2387671f6a0f12123e7497b5938 (patch)
tree8fd87d7bf5699488ffc12afa991011e80ac1011b /inc/3rdparty/simple_html_dom.php
parent894cd087f41d605f2f093aaad1300825f705e009 (diff)
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remove 3rd libraries
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1<?php
2/**
3 * Website: http://sourceforge.net/projects/simplehtmldom/
4 * Additional projects that may be used: http://sourceforge.net/projects/debugobject/
5 * Acknowledge: Jose Solorzano (https://sourceforge.net/projects/php-html/)
6 * Contributions by:
7 * Yousuke Kumakura (Attribute filters)
8 * Vadim Voituk (Negative indexes supports of "find" method)
9 * Antcs (Constructor with automatically load contents either text or file/url)
10 *
11 * all affected sections have comments starting with "PaperG"
12 *
13 * Paperg - Added case insensitive testing of the value of the selector.
14 * Paperg - Added tag_start for the starting index of tags - NOTE: This works but not accurately.
15 * This tag_start gets counted AFTER \r\n have been crushed out, and after the remove_noice calls so it will not reflect the REAL position of the tag in the source,
16 * it will almost always be smaller by some amount.
17 * We use this to determine how far into the file the tag in question is. This "percentage will never be accurate as the $dom->size is the "real" number of bytes the dom was created from.
18 * but for most purposes, it's a really good estimation.
19 * Paperg - Added the forceTagsClosed to the dom constructor. Forcing tags closed is great for malformed html, but it CAN lead to parsing errors.
20 * Allow the user to tell us how much they trust the html.
21 * Paperg add the text and plaintext to the selectors for the find syntax. plaintext implies text in the innertext of a node. text implies that the tag is a text node.
22 * This allows for us to find tags based on the text they contain.
23 * Create find_ancestor_tag to see if a tag is - at any level - inside of another specific tag.
24 * Paperg: added parse_charset so that we know about the character set of the source document.
25 * NOTE: If the user's system has a routine called get_last_retrieve_url_contents_content_type availalbe, we will assume it's returning the content-type header from the
26 * last transfer or curl_exec, and we will parse that and use it in preference to any other method of charset detection.
27 *
28 * Found infinite loop in the case of broken html in restore_noise. Rewrote to protect from that.
29 * PaperG (John Schlick) Added get_display_size for "IMG" tags.
30 *
31 * Licensed under The MIT License
32 * Redistributions of files must retain the above copyright notice.
33 *
34 * @author S.C. Chen <me578022@gmail.com>
35 * @author John Schlick
36 * @author Rus Carroll
37 * @version 1.5 ($Rev: 210 $)
38 * @package PlaceLocalInclude
39 * @subpackage simple_html_dom
40 */
41
42/**
43 * All of the Defines for the classes below.
44 * @author S.C. Chen <me578022@gmail.com>
45 */
46define('HDOM_TYPE_ELEMENT', 1);
47define('HDOM_TYPE_COMMENT', 2);
48define('HDOM_TYPE_TEXT', 3);
49define('HDOM_TYPE_ENDTAG', 4);
50define('HDOM_TYPE_ROOT', 5);
51define('HDOM_TYPE_UNKNOWN', 6);
52define('HDOM_QUOTE_DOUBLE', 0);
53define('HDOM_QUOTE_SINGLE', 1);
54define('HDOM_QUOTE_NO', 3);
55define('HDOM_INFO_BEGIN', 0);
56define('HDOM_INFO_END', 1);
57define('HDOM_INFO_QUOTE', 2);
58define('HDOM_INFO_SPACE', 3);
59define('HDOM_INFO_TEXT', 4);
60define('HDOM_INFO_INNER', 5);
61define('HDOM_INFO_OUTER', 6);
62define('HDOM_INFO_ENDSPACE',7);
63define('DEFAULT_TARGET_CHARSET', 'UTF-8');
64define('DEFAULT_BR_TEXT', "\r\n");
65define('DEFAULT_SPAN_TEXT', " ");
66define('MAX_FILE_SIZE', 600000);
67// helper functions
68// -----------------------------------------------------------------------------
69// get html dom from file
70// $maxlen is defined in the code as PHP_STREAM_COPY_ALL which is defined as -1.
71function file_get_html($url, $use_include_path = false, $context=null, $offset = -1, $maxLen=-1, $lowercase = true, $forceTagsClosed=true, $target_charset = DEFAULT_TARGET_CHARSET, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT)
72{
73 // We DO force the tags to be terminated.
74 $dom = new simple_html_dom(null, $lowercase, $forceTagsClosed, $target_charset, $stripRN, $defaultBRText, $defaultSpanText);
75 // For sourceforge users: uncomment the next line and comment the retreive_url_contents line 2 lines down if it is not already done.
76 $contents = file_get_contents($url, $use_include_path, $context, $offset);
77 // Paperg - use our own mechanism for getting the contents as we want to control the timeout.
78 //$contents = retrieve_url_contents($url);
79 if (empty($contents) || strlen($contents) > MAX_FILE_SIZE)
80 {
81 return false;
82 }
83 // The second parameter can force the selectors to all be lowercase.
84 $dom->load($contents, $lowercase, $stripRN);
85 return $dom;
86}
87
88// get html dom from string
89function str_get_html($str, $lowercase=true, $forceTagsClosed=true, $target_charset = DEFAULT_TARGET_CHARSET, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT)
90{
91 $dom = new simple_html_dom(null, $lowercase, $forceTagsClosed, $target_charset, $stripRN, $defaultBRText, $defaultSpanText);
92 if (empty($str) || strlen($str) > MAX_FILE_SIZE)
93 {
94 $dom->clear();
95 return false;
96 }
97 $dom->load($str, $lowercase, $stripRN);
98 return $dom;
99}
100
101// dump html dom tree
102function dump_html_tree($node, $show_attr=true, $deep=0)
103{
104 $node->dump($node);
105}
106
107
108/**
109 * simple html dom node
110 * PaperG - added ability for "find" routine to lowercase the value of the selector.
111 * PaperG - added $tag_start to track the start position of the tag in the total byte index
112 *
113 * @package PlaceLocalInclude
114 */
115class simple_html_dom_node
116{
117 public $nodetype = HDOM_TYPE_TEXT;
118 public $tag = 'text';
119 public $attr = array();
120 public $children = array();
121 public $nodes = array();
122 public $parent = null;
123 // The "info" array - see HDOM_INFO_... for what each element contains.
124 public $_ = array();
125 public $tag_start = 0;
126 private $dom = null;
127
128 function __construct($dom)
129 {
130 $this->dom = $dom;
131 $dom->nodes[] = $this;
132 }
133
134 function __destruct()
135 {
136 $this->clear();
137 }
138
139 function __toString()
140 {
141 return $this->outertext();
142 }
143
144 // clean up memory due to php5 circular references memory leak...
145 function clear()
146 {
147 $this->dom = null;
148 $this->nodes = null;
149 $this->parent = null;
150 $this->children = null;
151 }
152
153 // dump node's tree
154 function dump($show_attr=true, $deep=0)
155 {
156 $lead = str_repeat(' ', $deep);
157
158 echo $lead.$this->tag;
159 if ($show_attr && count($this->attr)>0)
160 {
161 echo '(';
162 foreach ($this->attr as $k=>$v)
163 echo "[$k]=>\"".$this->$k.'", ';
164 echo ')';
165 }
166 echo "\n";
167
168 if ($this->nodes)
169 {
170 foreach ($this->nodes as $c)
171 {
172 $c->dump($show_attr, $deep+1);
173 }
174 }
175 }
176
177
178 // Debugging function to dump a single dom node with a bunch of information about it.
179 function dump_node($echo=true)
180 {
181
182 $string = $this->tag;
183 if (count($this->attr)>0)
184 {
185 $string .= '(';
186 foreach ($this->attr as $k=>$v)
187 {
188 $string .= "[$k]=>\"".$this->$k.'", ';
189 }
190 $string .= ')';
191 }
192 if (count($this->_)>0)
193 {
194 $string .= ' $_ (';
195 foreach ($this->_ as $k=>$v)
196 {
197 if (is_array($v))
198 {
199 $string .= "[$k]=>(";
200 foreach ($v as $k2=>$v2)
201 {
202 $string .= "[$k2]=>\"".$v2.'", ';
203 }
204 $string .= ")";
205 } else {
206 $string .= "[$k]=>\"".$v.'", ';
207 }
208 }
209 $string .= ")";
210 }
211
212 if (isset($this->text))
213 {
214 $string .= " text: (" . $this->text . ")";
215 }
216
217 $string .= " HDOM_INNER_INFO: '";
218 if (isset($node->_[HDOM_INFO_INNER]))
219 {
220 $string .= $node->_[HDOM_INFO_INNER] . "'";
221 }
222 else
223 {
224 $string .= ' NULL ';
225 }
226
227 $string .= " children: " . count($this->children);
228 $string .= " nodes: " . count($this->nodes);
229 $string .= " tag_start: " . $this->tag_start;
230 $string .= "\n";
231
232 if ($echo)
233 {
234 echo $string;
235 return;
236 }
237 else
238 {
239 return $string;
240 }
241 }
242
243 // returns the parent of node
244 // If a node is passed in, it will reset the parent of the current node to that one.
245 function parent($parent=null)
246 {
247 // I am SURE that this doesn't work properly.
248 // It fails to unset the current node from it's current parents nodes or children list first.
249 if ($parent !== null)
250 {
251 $this->parent = $parent;
252 $this->parent->nodes[] = $this;
253 $this->parent->children[] = $this;
254 }
255
256 return $this->parent;
257 }
258
259 // verify that node has children
260 function has_child()
261 {
262 return !empty($this->children);
263 }
264
265 // returns children of node
266 function children($idx=-1)
267 {
268 if ($idx===-1)
269 {
270 return $this->children;
271 }
272 if (isset($this->children[$idx]))
273 {
274 return $this->children[$idx];
275 }
276 return null;
277 }
278
279 // returns the first child of node
280 function first_child()
281 {
282 if (count($this->children)>0)
283 {
284 return $this->children[0];
285 }
286 return null;
287 }
288
289 // returns the last child of node
290 function last_child()
291 {
292 if (($count=count($this->children))>0)
293 {
294 return $this->children[$count-1];
295 }
296 return null;
297 }
298
299 // returns the next sibling of node
300 function next_sibling()
301 {
302 if ($this->parent===null)
303 {
304 return null;
305 }
306
307 $idx = 0;
308 $count = count($this->parent->children);
309 while ($idx<$count && $this!==$this->parent->children[$idx])
310 {
311 ++$idx;
312 }
313 if (++$idx>=$count)
314 {
315 return null;
316 }
317 return $this->parent->children[$idx];
318 }
319
320 // returns the previous sibling of node
321 function prev_sibling()
322 {
323 if ($this->parent===null) return null;
324 $idx = 0;
325 $count = count($this->parent->children);
326 while ($idx<$count && $this!==$this->parent->children[$idx])
327 ++$idx;
328 if (--$idx<0) return null;
329 return $this->parent->children[$idx];
330 }
331
332 // function to locate a specific ancestor tag in the path to the root.
333 function find_ancestor_tag($tag)
334 {
335 global $debug_object;
336 if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
337
338 // Start by including ourselves in the comparison.
339 $returnDom = $this;
340
341 while (!is_null($returnDom))
342 {
343 if (is_object($debug_object)) { $debug_object->debug_log(2, "Current tag is: " . $returnDom->tag); }
344
345 if ($returnDom->tag == $tag)
346 {
347 break;
348 }
349 $returnDom = $returnDom->parent;
350 }
351 return $returnDom;
352 }
353
354 // get dom node's inner html
355 function innertext()
356 {
357 if (isset($this->_[HDOM_INFO_INNER])) return $this->_[HDOM_INFO_INNER];
358 if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
359
360 $ret = '';
361 foreach ($this->nodes as $n)
362 $ret .= $n->outertext();
363 return $ret;
364 }
365
366 // get dom node's outer text (with tag)
367 function outertext()
368 {
369 global $debug_object;
370 if (is_object($debug_object))
371 {
372 $text = '';
373 if ($this->tag == 'text')
374 {
375 if (!empty($this->text))
376 {
377 $text = " with text: " . $this->text;
378 }
379 }
380 $debug_object->debug_log(1, 'Innertext of tag: ' . $this->tag . $text);
381 }
382
383 if ($this->tag==='root') return $this->innertext();
384
385 // trigger callback
386 if ($this->dom && $this->dom->callback!==null)
387 {
388 call_user_func_array($this->dom->callback, array($this));
389 }
390
391 if (isset($this->_[HDOM_INFO_OUTER])) return $this->_[HDOM_INFO_OUTER];
392 if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
393
394 // render begin tag
395 if ($this->dom && $this->dom->nodes[$this->_[HDOM_INFO_BEGIN]])
396 {
397 $ret = $this->dom->nodes[$this->_[HDOM_INFO_BEGIN]]->makeup();
398 } else {
399 $ret = "";
400 }
401
402 // render inner text
403 if (isset($this->_[HDOM_INFO_INNER]))
404 {
405 // If it's a br tag... don't return the HDOM_INNER_INFO that we may or may not have added.
406 if ($this->tag != "br")
407 {
408 $ret .= $this->_[HDOM_INFO_INNER];
409 }
410 } else {
411 if ($this->nodes)
412 {
413 foreach ($this->nodes as $n)
414 {
415 $ret .= $this->convert_text($n->outertext());
416 }
417 }
418 }
419
420 // render end tag
421 if (isset($this->_[HDOM_INFO_END]) && $this->_[HDOM_INFO_END]!=0)
422 $ret .= '</'.$this->tag.'>';
423 return $ret;
424 }
425
426 // get dom node's plain text
427 function text()
428 {
429 if (isset($this->_[HDOM_INFO_INNER])) return $this->_[HDOM_INFO_INNER];
430 switch ($this->nodetype)
431 {
432 case HDOM_TYPE_TEXT: return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
433 case HDOM_TYPE_COMMENT: return '';
434 case HDOM_TYPE_UNKNOWN: return '';
435 }
436 if (strcasecmp($this->tag, 'script')===0) return '';
437 if (strcasecmp($this->tag, 'style')===0) return '';
438
439 $ret = '';
440 // In rare cases, (always node type 1 or HDOM_TYPE_ELEMENT - observed for some span tags, and some p tags) $this->nodes is set to NULL.
441 // NOTE: This indicates that there is a problem where it's set to NULL without a clear happening.
442 // WHY is this happening?
443 if (!is_null($this->nodes))
444 {
445 foreach ($this->nodes as $n)
446 {
447 $ret .= $this->convert_text($n->text());
448 }
449
450 // If this node is a span... add a space at the end of it so multiple spans don't run into each other. This is plaintext after all.
451 if ($this->tag == "span")
452 {
453 $ret .= $this->dom->default_span_text;
454 }
455
456
457 }
458 return $ret;
459 }
460
461 function xmltext()
462 {
463 $ret = $this->innertext();
464 $ret = str_ireplace('<![CDATA[', '', $ret);
465 $ret = str_replace(']]>', '', $ret);
466 return $ret;
467 }
468
469 // build node's text with tag
470 function makeup()
471 {
472 // text, comment, unknown
473 if (isset($this->_[HDOM_INFO_TEXT])) return $this->dom->restore_noise($this->_[HDOM_INFO_TEXT]);
474
475 $ret = '<'.$this->tag;
476 $i = -1;
477
478 foreach ($this->attr as $key=>$val)
479 {
480 ++$i;
481
482 // skip removed attribute
483 if ($val===null || $val===false)
484 continue;
485
486 $ret .= $this->_[HDOM_INFO_SPACE][$i][0];
487 //no value attr: nowrap, checked selected...
488 if ($val===true)
489 $ret .= $key;
490 else {
491 switch ($this->_[HDOM_INFO_QUOTE][$i])
492 {
493 case HDOM_QUOTE_DOUBLE: $quote = '"'; break;
494 case HDOM_QUOTE_SINGLE: $quote = '\''; break;
495 default: $quote = '';
496 }
497 $ret .= $key.$this->_[HDOM_INFO_SPACE][$i][1].'='.$this->_[HDOM_INFO_SPACE][$i][2].$quote.$val.$quote;
498 }
499 }
500 $ret = $this->dom->restore_noise($ret);
501 return $ret . $this->_[HDOM_INFO_ENDSPACE] . '>';
502 }
503
504 // find elements by css selector
505 //PaperG - added ability for find to lowercase the value of the selector.
506 function find($selector, $idx=null, $lowercase=false)
507 {
508 $selectors = $this->parse_selector($selector);
509 if (($count=count($selectors))===0) return array();
510 $found_keys = array();
511
512 // find each selector
513 for ($c=0; $c<$count; ++$c)
514 {
515 // The change on the below line was documented on the sourceforge code tracker id 2788009
516 // used to be: if (($levle=count($selectors[0]))===0) return array();
517 if (($levle=count($selectors[$c]))===0) return array();
518 if (!isset($this->_[HDOM_INFO_BEGIN])) return array();
519
520 $head = array($this->_[HDOM_INFO_BEGIN]=>1);
521
522 // handle descendant selectors, no recursive!
523 for ($l=0; $l<$levle; ++$l)
524 {
525 $ret = array();
526 foreach ($head as $k=>$v)
527 {
528 $n = ($k===-1) ? $this->dom->root : $this->dom->nodes[$k];
529 //PaperG - Pass this optional parameter on to the seek function.
530 $n->seek($selectors[$c][$l], $ret, $lowercase);
531 }
532 $head = $ret;
533 }
534
535 foreach ($head as $k=>$v)
536 {
537 if (!isset($found_keys[$k]))
538 {
539 $found_keys[$k] = 1;
540 }
541 }
542 }
543
544 // sort keys
545 ksort($found_keys);
546
547 $found = array();
548 foreach ($found_keys as $k=>$v)
549 $found[] = $this->dom->nodes[$k];
550
551 // return nth-element or array
552 if (is_null($idx)) return $found;
553 else if ($idx<0) $idx = count($found) + $idx;
554 return (isset($found[$idx])) ? $found[$idx] : null;
555 }
556
557 // seek for given conditions
558 // PaperG - added parameter to allow for case insensitive testing of the value of a selector.
559 protected function seek($selector, &$ret, $lowercase=false)
560 {
561 global $debug_object;
562 if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
563
564 list($tag, $key, $val, $exp, $no_key) = $selector;
565
566 // xpath index
567 if ($tag && $key && is_numeric($key))
568 {
569 $count = 0;
570 foreach ($this->children as $c)
571 {
572 if ($tag==='*' || $tag===$c->tag) {
573 if (++$count==$key) {
574 $ret[$c->_[HDOM_INFO_BEGIN]] = 1;
575 return;
576 }
577 }
578 }
579 return;
580 }
581
582 $end = (!empty($this->_[HDOM_INFO_END])) ? $this->_[HDOM_INFO_END] : 0;
583 if ($end==0) {
584 $parent = $this->parent;
585 while (!isset($parent->_[HDOM_INFO_END]) && $parent!==null) {
586 $end -= 1;
587 $parent = $parent->parent;
588 }
589 $end += $parent->_[HDOM_INFO_END];
590 }
591
592 for ($i=$this->_[HDOM_INFO_BEGIN]+1; $i<$end; ++$i) {
593 $node = $this->dom->nodes[$i];
594
595 $pass = true;
596
597 if ($tag==='*' && !$key) {
598 if (in_array($node, $this->children, true))
599 $ret[$i] = 1;
600 continue;
601 }
602
603 // compare tag
604 if ($tag && $tag!=$node->tag && $tag!=='*') {$pass=false;}
605 // compare key
606 if ($pass && $key) {
607 if ($no_key) {
608 if (isset($node->attr[$key])) $pass=false;
609 } else {
610 if (($key != "plaintext") && !isset($node->attr[$key])) $pass=false;
611 }
612 }
613 // compare value
614 if ($pass && $key && $val && $val!=='*') {
615 // If they have told us that this is a "plaintext" search then we want the plaintext of the node - right?
616 if ($key == "plaintext") {
617 // $node->plaintext actually returns $node->text();
618 $nodeKeyValue = $node->text();
619 } else {
620 // this is a normal search, we want the value of that attribute of the tag.
621 $nodeKeyValue = $node->attr[$key];
622 }
623 if (is_object($debug_object)) {$debug_object->debug_log(2, "testing node: " . $node->tag . " for attribute: " . $key . $exp . $val . " where nodes value is: " . $nodeKeyValue);}
624
625 //PaperG - If lowercase is set, do a case insensitive test of the value of the selector.
626 if ($lowercase) {
627 $check = $this->match($exp, strtolower($val), strtolower($nodeKeyValue));
628 } else {
629 $check = $this->match($exp, $val, $nodeKeyValue);
630 }
631 if (is_object($debug_object)) {$debug_object->debug_log(2, "after match: " . ($check ? "true" : "false"));}
632
633 // handle multiple class
634 if (!$check && strcasecmp($key, 'class')===0) {
635 foreach (explode(' ',$node->attr[$key]) as $k) {
636 // Without this, there were cases where leading, trailing, or double spaces lead to our comparing blanks - bad form.
637 if (!empty($k)) {
638 if ($lowercase) {
639 $check = $this->match($exp, strtolower($val), strtolower($k));
640 } else {
641 $check = $this->match($exp, $val, $k);
642 }
643 if ($check) break;
644 }
645 }
646 }
647 if (!$check) $pass = false;
648 }
649 if ($pass) $ret[$i] = 1;
650 unset($node);
651 }
652 // It's passed by reference so this is actually what this function returns.
653 if (is_object($debug_object)) {$debug_object->debug_log(1, "EXIT - ret: ", $ret);}
654 }
655
656 protected function match($exp, $pattern, $value) {
657 global $debug_object;
658 if (is_object($debug_object)) {$debug_object->debug_log_entry(1);}
659
660 switch ($exp) {
661 case '=':
662 return ($value===$pattern);
663 case '!=':
664 return ($value!==$pattern);
665 case '^=':
666 return preg_match("/^".preg_quote($pattern,'/')."/", $value);
667 case '$=':
668 return preg_match("/".preg_quote($pattern,'/')."$/", $value);
669 case '*=':
670 if ($pattern[0]=='/') {
671 return preg_match($pattern, $value);
672 }
673 return preg_match("/".$pattern."/i", $value);
674 }
675 return false;
676 }
677
678 protected function parse_selector($selector_string) {
679 global $debug_object;
680 if (is_object($debug_object)) {$debug_object->debug_log_entry(1);}
681
682 // pattern of CSS selectors, modified from mootools
683 // Paperg: Add the colon to the attrbute, so that it properly finds <tag attr:ibute="something" > like google does.
684 // Note: if you try to look at this attribute, yo MUST use getAttribute since $dom->x:y will fail the php syntax check.
685// Notice the \[ starting the attbute? and the @? following? This implies that an attribute can begin with an @ sign that is not captured.
686// This implies that an html attribute specifier may start with an @ sign that is NOT captured by the expression.
687// farther study is required to determine of this should be documented or removed.
688// $pattern = "/([\w-:\*]*)(?:\#([\w-]+)|\.([\w-]+))?(?:\[@?(!?[\w-]+)(?:([!*^$]?=)[\"']?(.*?)[\"']?)?\])?([\/, ]+)/is";
689 $pattern = "/([\w-:\*]*)(?:\#([\w-]+)|\.([\w-]+))?(?:\[@?(!?[\w-:]+)(?:([!*^$]?=)[\"']?(.*?)[\"']?)?\])?([\/, ]+)/is";
690 preg_match_all($pattern, trim($selector_string).' ', $matches, PREG_SET_ORDER);
691 if (is_object($debug_object)) {$debug_object->debug_log(2, "Matches Array: ", $matches);}
692
693 $selectors = array();
694 $result = array();
695 //print_r($matches);
696
697 foreach ($matches as $m) {
698 $m[0] = trim($m[0]);
699 if ($m[0]==='' || $m[0]==='/' || $m[0]==='//') continue;
700 // for browser generated xpath
701 if ($m[1]==='tbody') continue;
702
703 list($tag, $key, $val, $exp, $no_key) = array($m[1], null, null, '=', false);
704 if (!empty($m[2])) {$key='id'; $val=$m[2];}
705 if (!empty($m[3])) {$key='class'; $val=$m[3];}
706 if (!empty($m[4])) {$key=$m[4];}
707 if (!empty($m[5])) {$exp=$m[5];}
708 if (!empty($m[6])) {$val=$m[6];}
709
710 // convert to lowercase
711 if ($this->dom->lowercase) {$tag=strtolower($tag); $key=strtolower($key);}
712 //elements that do NOT have the specified attribute
713 if (isset($key[0]) && $key[0]==='!') {$key=substr($key, 1); $no_key=true;}
714
715 $result[] = array($tag, $key, $val, $exp, $no_key);
716 if (trim($m[7])===',') {
717 $selectors[] = $result;
718 $result = array();
719 }
720 }
721 if (count($result)>0)
722 $selectors[] = $result;
723 return $selectors;
724 }
725
726 function __get($name)
727 {
728 if (isset($this->attr[$name]))
729 {
730 return $this->convert_text($this->attr[$name]);
731 }
732 switch ($name)
733 {
734 case 'outertext': return $this->outertext();
735 case 'innertext': return $this->innertext();
736 case 'plaintext': return $this->text();
737 case 'xmltext': return $this->xmltext();
738 default: return array_key_exists($name, $this->attr);
739 }
740 }
741
742 function __set($name, $value)
743 {
744 global $debug_object;
745 if (is_object($debug_object)) {$debug_object->debug_log_entry(1);}
746
747 switch ($name)
748 {
749 case 'outertext': return $this->_[HDOM_INFO_OUTER] = $value;
750 case 'innertext':
751 if (isset($this->_[HDOM_INFO_TEXT])) return $this->_[HDOM_INFO_TEXT] = $value;
752 return $this->_[HDOM_INFO_INNER] = $value;
753 }
754 if (!isset($this->attr[$name]))
755 {
756 $this->_[HDOM_INFO_SPACE][] = array(' ', '', '');
757 $this->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_DOUBLE;
758 }
759 $this->attr[$name] = $value;
760 }
761
762 function __isset($name)
763 {
764 switch ($name)
765 {
766 case 'outertext': return true;
767 case 'innertext': return true;
768 case 'plaintext': return true;
769 }
770 //no value attr: nowrap, checked selected...
771 return (array_key_exists($name, $this->attr)) ? true : isset($this->attr[$name]);
772 }
773
774 function __unset($name) {
775 if (isset($this->attr[$name]))
776 unset($this->attr[$name]);
777 }
778
779 // PaperG - Function to convert the text from one character set to another if the two sets are not the same.
780 function convert_text($text)
781 {
782 global $debug_object;
783 if (is_object($debug_object)) {$debug_object->debug_log_entry(1);}
784
785 $converted_text = $text;
786
787 $sourceCharset = "";
788 $targetCharset = "";
789
790 if ($this->dom)
791 {
792 $sourceCharset = strtoupper($this->dom->_charset);
793 $targetCharset = strtoupper($this->dom->_target_charset);
794 }
795 if (is_object($debug_object)) {$debug_object->debug_log(3, "source charset: " . $sourceCharset . " target charaset: " . $targetCharset);}
796
797 if (!empty($sourceCharset) && !empty($targetCharset) && (strcasecmp($sourceCharset, $targetCharset) != 0))
798 {
799 // Check if the reported encoding could have been incorrect and the text is actually already UTF-8
800 if ((strcasecmp($targetCharset, 'UTF-8') == 0) && ($this->is_utf8($text)))
801 {
802 $converted_text = $text;
803 }
804 else
805 {
806 $converted_text = iconv($sourceCharset, $targetCharset, $text);
807 }
808 }
809
810 // Lets make sure that we don't have that silly BOM issue with any of the utf-8 text we output.
811 if ($targetCharset == 'UTF-8')
812 {
813 if (substr($converted_text, 0, 3) == "\xef\xbb\xbf")
814 {
815 $converted_text = substr($converted_text, 3);
816 }
817 if (substr($converted_text, -3) == "\xef\xbb\xbf")
818 {
819 $converted_text = substr($converted_text, 0, -3);
820 }
821 }
822
823 return $converted_text;
824 }
825
826 /**
827 * Returns true if $string is valid UTF-8 and false otherwise.
828 *
829 * @param mixed $str String to be tested
830 * @return boolean
831 */
832 static function is_utf8($str)
833 {
834 $c=0; $b=0;
835 $bits=0;
836 $len=strlen($str);
837 for($i=0; $i<$len; $i++)
838 {
839 $c=ord($str[$i]);
840 if($c > 128)
841 {
842 if(($c >= 254)) return false;
843 elseif($c >= 252) $bits=6;
844 elseif($c >= 248) $bits=5;
845 elseif($c >= 240) $bits=4;
846 elseif($c >= 224) $bits=3;
847 elseif($c >= 192) $bits=2;
848 else return false;
849 if(($i+$bits) > $len) return false;
850 while($bits > 1)
851 {
852 $i++;
853 $b=ord($str[$i]);
854 if($b < 128 || $b > 191) return false;
855 $bits--;
856 }
857 }
858 }
859 return true;
860 }
861 /*
862 function is_utf8($string)
863 {
864 //this is buggy
865 return (utf8_encode(utf8_decode($string)) == $string);
866 }
867 */
868
869 /**
870 * Function to try a few tricks to determine the displayed size of an img on the page.
871 * NOTE: This will ONLY work on an IMG tag. Returns FALSE on all other tag types.
872 *
873 * @author John Schlick
874 * @version April 19 2012
875 * @return array an array containing the 'height' and 'width' of the image on the page or -1 if we can't figure it out.
876 */
877 function get_display_size()
878 {
879 global $debug_object;
880
881 $width = -1;
882 $height = -1;
883
884 if ($this->tag !== 'img')
885 {
886 return false;
887 }
888
889 // See if there is aheight or width attribute in the tag itself.
890 if (isset($this->attr['width']))
891 {
892 $width = $this->attr['width'];
893 }
894
895 if (isset($this->attr['height']))
896 {
897 $height = $this->attr['height'];
898 }
899
900 // Now look for an inline style.
901 if (isset($this->attr['style']))
902 {
903 // Thanks to user gnarf from stackoverflow for this regular expression.
904 $attributes = array();
905 preg_match_all("/([\w-]+)\s*:\s*([^;]+)\s*;?/", $this->attr['style'], $matches, PREG_SET_ORDER);
906 foreach ($matches as $match) {
907 $attributes[$match[1]] = $match[2];
908 }
909
910 // If there is a width in the style attributes:
911 if (isset($attributes['width']) && $width == -1)
912 {
913 // check that the last two characters are px (pixels)
914 if (strtolower(substr($attributes['width'], -2)) == 'px')
915 {
916 $proposed_width = substr($attributes['width'], 0, -2);
917 // Now make sure that it's an integer and not something stupid.
918 if (filter_var($proposed_width, FILTER_VALIDATE_INT))
919 {
920 $width = $proposed_width;
921 }
922 }
923 }
924
925 // If there is a width in the style attributes:
926 if (isset($attributes['height']) && $height == -1)
927 {
928 // check that the last two characters are px (pixels)
929 if (strtolower(substr($attributes['height'], -2)) == 'px')
930 {
931 $proposed_height = substr($attributes['height'], 0, -2);
932 // Now make sure that it's an integer and not something stupid.
933 if (filter_var($proposed_height, FILTER_VALIDATE_INT))
934 {
935 $height = $proposed_height;
936 }
937 }
938 }
939
940 }
941
942 // Future enhancement:
943 // Look in the tag to see if there is a class or id specified that has a height or width attribute to it.
944
945 // Far future enhancement
946 // Look at all the parent tags of this image to see if they specify a class or id that has an img selector that specifies a height or width
947 // Note that in this case, the class or id will have the img subselector for it to apply to the image.
948
949 // ridiculously far future development
950 // If the class or id is specified in a SEPARATE css file thats not on the page, go get it and do what we were just doing for the ones on the page.
951
952 $result = array('height' => $height,
953 'width' => $width);
954 return $result;
955 }
956
957 // camel naming conventions
958 function getAllAttributes() {return $this->attr;}
959 function getAttribute($name) {return $this->__get($name);}
960 function setAttribute($name, $value) {$this->__set($name, $value);}
961 function hasAttribute($name) {return $this->__isset($name);}
962 function removeAttribute($name) {$this->__set($name, null);}
963 function getElementById($id) {return $this->find("#$id", 0);}
964 function getElementsById($id, $idx=null) {return $this->find("#$id", $idx);}
965 function getElementByTagName($name) {return $this->find($name, 0);}
966 function getElementsByTagName($name, $idx=null) {return $this->find($name, $idx);}
967 function parentNode() {return $this->parent();}
968 function childNodes($idx=-1) {return $this->children($idx);}
969 function firstChild() {return $this->first_child();}
970 function lastChild() {return $this->last_child();}
971 function nextSibling() {return $this->next_sibling();}
972 function previousSibling() {return $this->prev_sibling();}
973 function hasChildNodes() {return $this->has_child();}
974 function nodeName() {return $this->tag;}
975 function appendChild($node) {$node->parent($this); return $node;}
976
977}
978
979/**
980 * simple html dom parser
981 * Paperg - in the find routine: allow us to specify that we want case insensitive testing of the value of the selector.
982 * Paperg - change $size from protected to public so we can easily access it
983 * Paperg - added ForceTagsClosed in the constructor which tells us whether we trust the html or not. Default is to NOT trust it.
984 *
985 * @package PlaceLocalInclude
986 */
987class simple_html_dom
988{
989 public $root = null;
990 public $nodes = array();
991 public $callback = null;
992 public $lowercase = false;
993 // Used to keep track of how large the text was when we started.
994 public $original_size;
995 public $size;
996 protected $pos;
997 protected $doc;
998 protected $char;
999 protected $cursor;
1000 protected $parent;
1001 protected $noise = array();
1002 protected $token_blank = " \t\r\n";
1003 protected $token_equal = ' =/>';
1004 protected $token_slash = " />\r\n\t";
1005 protected $token_attr = ' >';
1006 // Note that this is referenced by a child node, and so it needs to be public for that node to see this information.
1007 public $_charset = '';
1008 public $_target_charset = '';
1009 protected $default_br_text = "";
1010 public $default_span_text = "";
1011
1012 // use isset instead of in_array, performance boost about 30%...
1013 protected $self_closing_tags = array('img'=>1, 'br'=>1, 'input'=>1, 'meta'=>1, 'link'=>1, 'hr'=>1, 'base'=>1, 'embed'=>1, 'spacer'=>1);
1014 protected $block_tags = array('root'=>1, 'body'=>1, 'form'=>1, 'div'=>1, 'span'=>1, 'table'=>1);
1015 // Known sourceforge issue #2977341
1016 // B tags that are not closed cause us to return everything to the end of the document.
1017 protected $optional_closing_tags = array(
1018 'tr'=>array('tr'=>1, 'td'=>1, 'th'=>1),
1019 'th'=>array('th'=>1),
1020 'td'=>array('td'=>1),
1021 'li'=>array('li'=>1),
1022 'dt'=>array('dt'=>1, 'dd'=>1),
1023 'dd'=>array('dd'=>1, 'dt'=>1),
1024 'dl'=>array('dd'=>1, 'dt'=>1),
1025 'p'=>array('p'=>1),
1026 'nobr'=>array('nobr'=>1),
1027 'b'=>array('b'=>1),
1028 'option'=>array('option'=>1),
1029 );
1030
1031 function __construct($str=null, $lowercase=true, $forceTagsClosed=true, $target_charset=DEFAULT_TARGET_CHARSET, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT)
1032 {
1033 if ($str)
1034 {
1035 if (preg_match("/^http:\/\//i",$str) || is_file($str))
1036 {
1037 $this->load_file($str);
1038 }
1039 else
1040 {
1041 $this->load($str, $lowercase, $stripRN, $defaultBRText, $defaultSpanText);
1042 }
1043 }
1044 // Forcing tags to be closed implies that we don't trust the html, but it can lead to parsing errors if we SHOULD trust the html.
1045 if (!$forceTagsClosed) {
1046 $this->optional_closing_array=array();
1047 }
1048 $this->_target_charset = $target_charset;
1049 }
1050
1051 function __destruct()
1052 {
1053 $this->clear();
1054 }
1055
1056 // load html from string
1057 function load($str, $lowercase=true, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT)
1058 {
1059 global $debug_object;
1060
1061 // prepare
1062 $this->prepare($str, $lowercase, $stripRN, $defaultBRText, $defaultSpanText);
1063 // strip out cdata
1064 $this->remove_noise("'<!\[CDATA\[(.*?)\]\]>'is", true);
1065 // strip out comments
1066 $this->remove_noise("'<!--(.*?)-->'is");
1067 // Per sourceforge http://sourceforge.net/tracker/?func=detail&aid=2949097&group_id=218559&atid=1044037
1068 // Script tags removal now preceeds style tag removal.
1069 // strip out <script> tags
1070 $this->remove_noise("'<\s*script[^>]*[^/]>(.*?)<\s*/\s*script\s*>'is");
1071 $this->remove_noise("'<\s*script\s*>(.*?)<\s*/\s*script\s*>'is");
1072 // strip out <style> tags
1073 $this->remove_noise("'<\s*style[^>]*[^/]>(.*?)<\s*/\s*style\s*>'is");
1074 $this->remove_noise("'<\s*style\s*>(.*?)<\s*/\s*style\s*>'is");
1075 // strip out preformatted tags
1076 $this->remove_noise("'<\s*(?:code)[^>]*>(.*?)<\s*/\s*(?:code)\s*>'is");
1077 // strip out server side scripts
1078 $this->remove_noise("'(<\?)(.*?)(\?>)'s", true);
1079 // strip smarty scripts
1080 $this->remove_noise("'(\{\w)(.*?)(\})'s", true);
1081
1082 // parsing
1083 while ($this->parse());
1084 // end
1085 $this->root->_[HDOM_INFO_END] = $this->cursor;
1086 $this->parse_charset();
1087
1088 // make load function chainable
1089 return $this;
1090
1091 }
1092
1093 // load html from file
1094 function load_file()
1095 {
1096 //external error: NOT related to dom loading
1097 $extError=error_get_last();
1098
1099 $args = func_get_args();
1100 $this->load(call_user_func_array('file_get_contents', $args), true);
1101
1102 // Throw an error if we can't properly load the dom.
1103 $error=error_get_last();
1104 if ($error!==$extError) {
1105 $this->clear();
1106 return false;
1107 }
1108 }
1109
1110 // set callback function
1111 function set_callback($function_name)
1112 {
1113 $this->callback = $function_name;
1114 }
1115
1116 // remove callback function
1117 function remove_callback()
1118 {
1119 $this->callback = null;
1120 }
1121
1122 // save dom as string
1123 function save($filepath='')
1124 {
1125 $ret = $this->root->innertext();
1126 if ($filepath!=='') file_put_contents($filepath, $ret, LOCK_EX);
1127 return $ret;
1128 }
1129
1130 // find dom node by css selector
1131 // Paperg - allow us to specify that we want case insensitive testing of the value of the selector.
1132 function find($selector, $idx=null, $lowercase=false)
1133 {
1134 return $this->root->find($selector, $idx, $lowercase);
1135 }
1136
1137 // clean up memory due to php5 circular references memory leak...
1138 function clear()
1139 {
1140 foreach ($this->nodes as $n) {$n->clear(); $n = null;}
1141 // This add next line is documented in the sourceforge repository. 2977248 as a fix for ongoing memory leaks that occur even with the use of clear.
1142 if (isset($this->children)) foreach ($this->children as $n) {$n->clear(); $n = null;}
1143 if (isset($this->parent)) {$this->parent->clear(); unset($this->parent);}
1144 if (isset($this->root)) {$this->root->clear(); unset($this->root);}
1145 unset($this->doc);
1146 unset($this->noise);
1147 }
1148
1149 function dump($show_attr=true)
1150 {
1151 $this->root->dump($show_attr);
1152 }
1153
1154 // prepare HTML data and init everything
1155 protected function prepare($str, $lowercase=true, $stripRN=true, $defaultBRText=DEFAULT_BR_TEXT, $defaultSpanText=DEFAULT_SPAN_TEXT)
1156 {
1157 $this->clear();
1158
1159 // set the length of content before we do anything to it.
1160 $this->size = strlen($str);
1161 // Save the original size of the html that we got in. It might be useful to someone.
1162 $this->original_size = $this->size;
1163
1164 //before we save the string as the doc... strip out the \r \n's if we are told to.
1165 if ($stripRN) {
1166 $str = str_replace("\r", " ", $str);
1167 $str = str_replace("\n", " ", $str);
1168
1169 // set the length of content since we have changed it.
1170 $this->size = strlen($str);
1171 }
1172
1173 $this->doc = $str;
1174 $this->pos = 0;
1175 $this->cursor = 1;
1176 $this->noise = array();
1177 $this->nodes = array();
1178 $this->lowercase = $lowercase;
1179 $this->default_br_text = $defaultBRText;
1180 $this->default_span_text = $defaultSpanText;
1181 $this->root = new simple_html_dom_node($this);
1182 $this->root->tag = 'root';
1183 $this->root->_[HDOM_INFO_BEGIN] = -1;
1184 $this->root->nodetype = HDOM_TYPE_ROOT;
1185 $this->parent = $this->root;
1186 if ($this->size>0) $this->char = $this->doc[0];
1187 }
1188
1189 // parse html content
1190 protected function parse()
1191 {
1192 if (($s = $this->copy_until_char('<'))==='')
1193 {
1194 return $this->read_tag();
1195 }
1196
1197 // text
1198 $node = new simple_html_dom_node($this);
1199 ++$this->cursor;
1200 $node->_[HDOM_INFO_TEXT] = $s;
1201 $this->link_nodes($node, false);
1202 return true;
1203 }
1204
1205 // PAPERG - dkchou - added this to try to identify the character set of the page we have just parsed so we know better how to spit it out later.
1206 // NOTE: IF you provide a routine called get_last_retrieve_url_contents_content_type which returns the CURLINFO_CONTENT_TYPE from the last curl_exec
1207 // (or the content_type header from the last transfer), we will parse THAT, and if a charset is specified, we will use it over any other mechanism.
1208 protected function parse_charset()
1209 {
1210 global $debug_object;
1211
1212 $charset = null;
1213
1214 if (function_exists('get_last_retrieve_url_contents_content_type'))
1215 {
1216 $contentTypeHeader = get_last_retrieve_url_contents_content_type();
1217 $success = preg_match('/charset=(.+)/', $contentTypeHeader, $matches);
1218 if ($success)
1219 {
1220 $charset = $matches[1];
1221 if (is_object($debug_object)) {$debug_object->debug_log(2, 'header content-type found charset of: ' . $charset);}
1222 }
1223
1224 }
1225
1226 if (empty($charset))
1227 {
1228 $el = $this->root->find('meta[http-equiv=Content-Type]',0, true);
1229 if (!empty($el))
1230 {
1231 $fullvalue = $el->content;
1232 if (is_object($debug_object)) {$debug_object->debug_log(2, 'meta content-type tag found' . $fullvalue);}
1233
1234 if (!empty($fullvalue))
1235 {
1236 $success = preg_match('/charset=(.+)/i', $fullvalue, $matches);
1237 if ($success)
1238 {
1239 $charset = $matches[1];
1240 }
1241 else
1242 {
1243 // If there is a meta tag, and they don't specify the character set, research says that it's typically ISO-8859-1
1244 if (is_object($debug_object)) {$debug_object->debug_log(2, 'meta content-type tag couldn\'t be parsed. using iso-8859 default.');}
1245 $charset = 'ISO-8859-1';
1246 }
1247 }
1248 }
1249 }
1250
1251 // If we couldn't find a charset above, then lets try to detect one based on the text we got...
1252 if (empty($charset))
1253 {
1254 // Use this in case mb_detect_charset isn't installed/loaded on this machine.
1255 $charset = false;
1256 if (function_exists('mb_detect_encoding'))
1257 {
1258 // Have php try to detect the encoding from the text given to us.
1259 $charset = mb_detect_encoding($this->root->plaintext . "ascii", $encoding_list = array( "UTF-8", "CP1252" ) );
1260 if (is_object($debug_object)) {$debug_object->debug_log(2, 'mb_detect found: ' . $charset);}
1261 }
1262
1263 // and if this doesn't work... then we need to just wrongheadedly assume it's UTF-8 so that we can move on - cause this will usually give us most of what we need...
1264 if ($charset === false)
1265 {
1266 if (is_object($debug_object)) {$debug_object->debug_log(2, 'since mb_detect failed - using default of utf-8');}
1267 $charset = 'UTF-8';
1268 }
1269 }
1270
1271 // Since CP1252 is a superset, if we get one of it's subsets, we want it instead.
1272 if ((strtolower($charset) == strtolower('ISO-8859-1')) || (strtolower($charset) == strtolower('Latin1')) || (strtolower($charset) == strtolower('Latin-1')))
1273 {
1274 if (is_object($debug_object)) {$debug_object->debug_log(2, 'replacing ' . $charset . ' with CP1252 as its a superset');}
1275 $charset = 'CP1252';
1276 }
1277
1278 if (is_object($debug_object)) {$debug_object->debug_log(1, 'EXIT - ' . $charset);}
1279
1280 return $this->_charset = $charset;
1281 }
1282
1283 // read tag info
1284 protected function read_tag()
1285 {
1286 if ($this->char!=='<')
1287 {
1288 $this->root->_[HDOM_INFO_END] = $this->cursor;
1289 return false;
1290 }
1291 $begin_tag_pos = $this->pos;
1292 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1293
1294 // end tag
1295 if ($this->char==='/')
1296 {
1297 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1298 // This represents the change in the simple_html_dom trunk from revision 180 to 181.
1299 // $this->skip($this->token_blank_t);
1300 $this->skip($this->token_blank);
1301 $tag = $this->copy_until_char('>');
1302
1303 // skip attributes in end tag
1304 if (($pos = strpos($tag, ' '))!==false)
1305 $tag = substr($tag, 0, $pos);
1306
1307 $parent_lower = strtolower($this->parent->tag);
1308 $tag_lower = strtolower($tag);
1309
1310 if ($parent_lower!==$tag_lower)
1311 {
1312 if (isset($this->optional_closing_tags[$parent_lower]) && isset($this->block_tags[$tag_lower]))
1313 {
1314 $this->parent->_[HDOM_INFO_END] = 0;
1315 $org_parent = $this->parent;
1316
1317 while (($this->parent->parent) && strtolower($this->parent->tag)!==$tag_lower)
1318 $this->parent = $this->parent->parent;
1319
1320 if (strtolower($this->parent->tag)!==$tag_lower) {
1321 $this->parent = $org_parent; // restore origonal parent
1322 if ($this->parent->parent) $this->parent = $this->parent->parent;
1323 $this->parent->_[HDOM_INFO_END] = $this->cursor;
1324 return $this->as_text_node($tag);
1325 }
1326 }
1327 else if (($this->parent->parent) && isset($this->block_tags[$tag_lower]))
1328 {
1329 $this->parent->_[HDOM_INFO_END] = 0;
1330 $org_parent = $this->parent;
1331
1332 while (($this->parent->parent) && strtolower($this->parent->tag)!==$tag_lower)
1333 $this->parent = $this->parent->parent;
1334
1335 if (strtolower($this->parent->tag)!==$tag_lower)
1336 {
1337 $this->parent = $org_parent; // restore origonal parent
1338 $this->parent->_[HDOM_INFO_END] = $this->cursor;
1339 return $this->as_text_node($tag);
1340 }
1341 }
1342 else if (($this->parent->parent) && strtolower($this->parent->parent->tag)===$tag_lower)
1343 {
1344 $this->parent->_[HDOM_INFO_END] = 0;
1345 $this->parent = $this->parent->parent;
1346 }
1347 else
1348 return $this->as_text_node($tag);
1349 }
1350
1351 $this->parent->_[HDOM_INFO_END] = $this->cursor;
1352 if ($this->parent->parent) $this->parent = $this->parent->parent;
1353
1354 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1355 return true;
1356 }
1357
1358 $node = new simple_html_dom_node($this);
1359 $node->_[HDOM_INFO_BEGIN] = $this->cursor;
1360 ++$this->cursor;
1361 $tag = $this->copy_until($this->token_slash);
1362 $node->tag_start = $begin_tag_pos;
1363
1364 // doctype, cdata & comments...
1365 if (isset($tag[0]) && $tag[0]==='!') {
1366 $node->_[HDOM_INFO_TEXT] = '<' . $tag . $this->copy_until_char('>');
1367
1368 if (isset($tag[2]) && $tag[1]==='-' && $tag[2]==='-') {
1369 $node->nodetype = HDOM_TYPE_COMMENT;
1370 $node->tag = 'comment';
1371 } else {
1372 $node->nodetype = HDOM_TYPE_UNKNOWN;
1373 $node->tag = 'unknown';
1374 }
1375 if ($this->char==='>') $node->_[HDOM_INFO_TEXT].='>';
1376 $this->link_nodes($node, true);
1377 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1378 return true;
1379 }
1380
1381 // text
1382 if ($pos=strpos($tag, '<')!==false) {
1383 $tag = '<' . substr($tag, 0, -1);
1384 $node->_[HDOM_INFO_TEXT] = $tag;
1385 $this->link_nodes($node, false);
1386 $this->char = $this->doc[--$this->pos]; // prev
1387 return true;
1388 }
1389
1390 if (!preg_match("/^[\w-:]+$/", $tag)) {
1391 $node->_[HDOM_INFO_TEXT] = '<' . $tag . $this->copy_until('<>');
1392 if ($this->char==='<') {
1393 $this->link_nodes($node, false);
1394 return true;
1395 }
1396
1397 if ($this->char==='>') $node->_[HDOM_INFO_TEXT].='>';
1398 $this->link_nodes($node, false);
1399 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1400 return true;
1401 }
1402
1403 // begin tag
1404 $node->nodetype = HDOM_TYPE_ELEMENT;
1405 $tag_lower = strtolower($tag);
1406 $node->tag = ($this->lowercase) ? $tag_lower : $tag;
1407
1408 // handle optional closing tags
1409 if (isset($this->optional_closing_tags[$tag_lower]) )
1410 {
1411 while (isset($this->optional_closing_tags[$tag_lower][strtolower($this->parent->tag)]))
1412 {
1413 $this->parent->_[HDOM_INFO_END] = 0;
1414 $this->parent = $this->parent->parent;
1415 }
1416 $node->parent = $this->parent;
1417 }
1418
1419 $guard = 0; // prevent infinity loop
1420 $space = array($this->copy_skip($this->token_blank), '', '');
1421
1422 // attributes
1423 do
1424 {
1425 if ($this->char!==null && $space[0]==='')
1426 {
1427 break;
1428 }
1429 $name = $this->copy_until($this->token_equal);
1430 if ($guard===$this->pos)
1431 {
1432 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1433 continue;
1434 }
1435 $guard = $this->pos;
1436
1437 // handle endless '<'
1438 if ($this->pos>=$this->size-1 && $this->char!=='>') {
1439 $node->nodetype = HDOM_TYPE_TEXT;
1440 $node->_[HDOM_INFO_END] = 0;
1441 $node->_[HDOM_INFO_TEXT] = '<'.$tag . $space[0] . $name;
1442 $node->tag = 'text';
1443 $this->link_nodes($node, false);
1444 return true;
1445 }
1446
1447 // handle mismatch '<'
1448 if ($this->doc[$this->pos-1]=='<') {
1449 $node->nodetype = HDOM_TYPE_TEXT;
1450 $node->tag = 'text';
1451 $node->attr = array();
1452 $node->_[HDOM_INFO_END] = 0;
1453 $node->_[HDOM_INFO_TEXT] = substr($this->doc, $begin_tag_pos, $this->pos-$begin_tag_pos-1);
1454 $this->pos -= 2;
1455 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1456 $this->link_nodes($node, false);
1457 return true;
1458 }
1459
1460 if ($name!=='/' && $name!=='') {
1461 $space[1] = $this->copy_skip($this->token_blank);
1462 $name = $this->restore_noise($name);
1463 if ($this->lowercase) $name = strtolower($name);
1464 if ($this->char==='=') {
1465 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1466 $this->parse_attr($node, $name, $space);
1467 }
1468 else {
1469 //no value attr: nowrap, checked selected...
1470 $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_NO;
1471 $node->attr[$name] = true;
1472 if ($this->char!='>') $this->char = $this->doc[--$this->pos]; // prev
1473 }
1474 $node->_[HDOM_INFO_SPACE][] = $space;
1475 $space = array($this->copy_skip($this->token_blank), '', '');
1476 }
1477 else
1478 break;
1479 } while ($this->char!=='>' && $this->char!=='/');
1480
1481 $this->link_nodes($node, true);
1482 $node->_[HDOM_INFO_ENDSPACE] = $space[0];
1483
1484 // check self closing
1485 if ($this->copy_until_char_escape('>')==='/')
1486 {
1487 $node->_[HDOM_INFO_ENDSPACE] .= '/';
1488 $node->_[HDOM_INFO_END] = 0;
1489 }
1490 else
1491 {
1492 // reset parent
1493 if (!isset($this->self_closing_tags[strtolower($node->tag)])) $this->parent = $node;
1494 }
1495 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1496
1497 // If it's a BR tag, we need to set it's text to the default text.
1498 // This way when we see it in plaintext, we can generate formatting that the user wants.
1499 // since a br tag never has sub nodes, this works well.
1500 if ($node->tag == "br")
1501 {
1502 $node->_[HDOM_INFO_INNER] = $this->default_br_text;
1503 }
1504
1505 return true;
1506 }
1507
1508 // parse attributes
1509 protected function parse_attr($node, $name, &$space)
1510 {
1511 // Per sourceforge: http://sourceforge.net/tracker/?func=detail&aid=3061408&group_id=218559&atid=1044037
1512 // If the attribute is already defined inside a tag, only pay atetntion to the first one as opposed to the last one.
1513 if (isset($node->attr[$name]))
1514 {
1515 return;
1516 }
1517
1518 $space[2] = $this->copy_skip($this->token_blank);
1519 switch ($this->char) {
1520 case '"':
1521 $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_DOUBLE;
1522 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1523 $node->attr[$name] = $this->restore_noise($this->copy_until_char_escape('"'));
1524 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1525 break;
1526 case '\'':
1527 $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_SINGLE;
1528 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1529 $node->attr[$name] = $this->restore_noise($this->copy_until_char_escape('\''));
1530 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1531 break;
1532 default:
1533 $node->_[HDOM_INFO_QUOTE][] = HDOM_QUOTE_NO;
1534 $node->attr[$name] = $this->restore_noise($this->copy_until($this->token_attr));
1535 }
1536 // PaperG: Attributes should not have \r or \n in them, that counts as html whitespace.
1537 $node->attr[$name] = str_replace("\r", "", $node->attr[$name]);
1538 $node->attr[$name] = str_replace("\n", "", $node->attr[$name]);
1539 // PaperG: If this is a "class" selector, lets get rid of the preceeding and trailing space since some people leave it in the multi class case.
1540 if ($name == "class") {
1541 $node->attr[$name] = trim($node->attr[$name]);
1542 }
1543 }
1544
1545 // link node's parent
1546 protected function link_nodes(&$node, $is_child)
1547 {
1548 $node->parent = $this->parent;
1549 $this->parent->nodes[] = $node;
1550 if ($is_child)
1551 {
1552 $this->parent->children[] = $node;
1553 }
1554 }
1555
1556 // as a text node
1557 protected function as_text_node($tag)
1558 {
1559 $node = new simple_html_dom_node($this);
1560 ++$this->cursor;
1561 $node->_[HDOM_INFO_TEXT] = '</' . $tag . '>';
1562 $this->link_nodes($node, false);
1563 $this->char = (++$this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1564 return true;
1565 }
1566
1567 protected function skip($chars)
1568 {
1569 $this->pos += strspn($this->doc, $chars, $this->pos);
1570 $this->char = ($this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1571 }
1572
1573 protected function copy_skip($chars)
1574 {
1575 $pos = $this->pos;
1576 $len = strspn($this->doc, $chars, $pos);
1577 $this->pos += $len;
1578 $this->char = ($this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1579 if ($len===0) return '';
1580 return substr($this->doc, $pos, $len);
1581 }
1582
1583 protected function copy_until($chars)
1584 {
1585 $pos = $this->pos;
1586 $len = strcspn($this->doc, $chars, $pos);
1587 $this->pos += $len;
1588 $this->char = ($this->pos<$this->size) ? $this->doc[$this->pos] : null; // next
1589 return substr($this->doc, $pos, $len);
1590 }
1591
1592 protected function copy_until_char($char)
1593 {
1594 if ($this->char===null) return '';
1595
1596 if (($pos = strpos($this->doc, $char, $this->pos))===false) {
1597 $ret = substr($this->doc, $this->pos, $this->size-$this->pos);
1598 $this->char = null;
1599 $this->pos = $this->size;
1600 return $ret;
1601 }
1602
1603 if ($pos===$this->pos) return '';
1604 $pos_old = $this->pos;
1605 $this->char = $this->doc[$pos];
1606 $this->pos = $pos;
1607 return substr($this->doc, $pos_old, $pos-$pos_old);
1608 }
1609
1610 protected function copy_until_char_escape($char)
1611 {
1612 if ($this->char===null) return '';
1613
1614 $start = $this->pos;
1615 while (1)
1616 {
1617 if (($pos = strpos($this->doc, $char, $start))===false)
1618 {
1619 $ret = substr($this->doc, $this->pos, $this->size-$this->pos);
1620 $this->char = null;
1621 $this->pos = $this->size;
1622 return $ret;
1623 }
1624
1625 if ($pos===$this->pos) return '';
1626
1627 if ($this->doc[$pos-1]==='\\') {
1628 $start = $pos+1;
1629 continue;
1630 }
1631
1632 $pos_old = $this->pos;
1633 $this->char = $this->doc[$pos];
1634 $this->pos = $pos;
1635 return substr($this->doc, $pos_old, $pos-$pos_old);
1636 }
1637 }
1638
1639 // remove noise from html content
1640 // save the noise in the $this->noise array.
1641 protected function remove_noise($pattern, $remove_tag=false)
1642 {
1643 global $debug_object;
1644 if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
1645
1646 $count = preg_match_all($pattern, $this->doc, $matches, PREG_SET_ORDER|PREG_OFFSET_CAPTURE);
1647
1648 for ($i=$count-1; $i>-1; --$i)
1649 {
1650 $key = '___noise___'.sprintf('% 5d', count($this->noise)+1000);
1651 if (is_object($debug_object)) { $debug_object->debug_log(2, 'key is: ' . $key); }
1652 $idx = ($remove_tag) ? 0 : 1;
1653 $this->noise[$key] = $matches[$i][$idx][0];
1654 $this->doc = substr_replace($this->doc, $key, $matches[$i][$idx][1], strlen($matches[$i][$idx][0]));
1655 }
1656
1657 // reset the length of content
1658 $this->size = strlen($this->doc);
1659 if ($this->size>0)
1660 {
1661 $this->char = $this->doc[0];
1662 }
1663 }
1664
1665 // restore noise to html content
1666 function restore_noise($text)
1667 {
1668 global $debug_object;
1669 if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
1670
1671 while (($pos=strpos($text, '___noise___'))!==false)
1672 {
1673 // Sometimes there is a broken piece of markup, and we don't GET the pos+11 etc... token which indicates a problem outside of us...
1674 if (strlen($text) > $pos+15)
1675 {
1676 $key = '___noise___'.$text[$pos+11].$text[$pos+12].$text[$pos+13].$text[$pos+14].$text[$pos+15];
1677 if (is_object($debug_object)) { $debug_object->debug_log(2, 'located key of: ' . $key); }
1678
1679 if (isset($this->noise[$key]))
1680 {
1681 $text = substr($text, 0, $pos).$this->noise[$key].substr($text, $pos+16);
1682 }
1683 else
1684 {
1685 // do this to prevent an infinite loop.
1686 $text = substr($text, 0, $pos).'UNDEFINED NOISE FOR KEY: '.$key . substr($text, $pos+16);
1687 }
1688 }
1689 else
1690 {
1691 // There is no valid key being given back to us... We must get rid of the ___noise___ or we will have a problem.
1692 $text = substr($text, 0, $pos).'NO NUMERIC NOISE KEY' . substr($text, $pos+11);
1693 }
1694 }
1695 return $text;
1696 }
1697
1698 // Sometimes we NEED one of the noise elements.
1699 function search_noise($text)
1700 {
1701 global $debug_object;
1702 if (is_object($debug_object)) { $debug_object->debug_log_entry(1); }
1703
1704 foreach($this->noise as $noiseElement)
1705 {
1706 if (strpos($noiseElement, $text)!==false)
1707 {
1708 return $noiseElement;
1709 }
1710 }
1711 }
1712 function __toString()
1713 {
1714 return $this->root->innertext();
1715 }
1716
1717 function __get($name)
1718 {
1719 switch ($name)
1720 {
1721 case 'outertext':
1722 return $this->root->innertext();
1723 case 'innertext':
1724 return $this->root->innertext();
1725 case 'plaintext':
1726 return $this->root->text();
1727 case 'charset':
1728 return $this->_charset;
1729 case 'target_charset':
1730 return $this->_target_charset;
1731 }
1732 }
1733
1734 // camel naming conventions
1735 function childNodes($idx=-1) {return $this->root->childNodes($idx);}
1736 function firstChild() {return $this->root->first_child();}
1737 function lastChild() {return $this->root->last_child();}
1738 function createElement($name, $value=null) {return @str_get_html("<$name>$value</$name>")->first_child();}
1739 function createTextNode($value) {return @end(str_get_html($value)->nodes);}
1740 function getElementById($id) {return $this->find("#$id", 0);}
1741 function getElementsById($id, $idx=null) {return $this->find("#$id", $idx);}
1742 function getElementByTagName($name) {return $this->find($name, 0);}
1743 function getElementsByTagName($name, $idx=-1) {return $this->find($name, $idx);}
1744 function loadFile() {$args = func_get_args();$this->load_file($args);}
1745}
1746
1747?> \ No newline at end of file
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-02 03:39:26 +0000