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1<?php
2
3/**
4 * Experimental HTML5-based parser using Jeroen van der Meer's PH5P library.
5 * Occupies space in the HTML5 pseudo-namespace, which may cause conflicts.
6 *
7 * @note
8 * Recent changes to PHP's DOM extension have resulted in some fatal
9 * error conditions with the original version of PH5P. Pending changes,
10 * this lexer will punt to DirectLex if DOM throws an exception.
11 */
12
13class HTMLPurifier_Lexer_PH5P extends HTMLPurifier_Lexer_DOMLex
14{
15 /**
16 * @param string $html
17 * @param HTMLPurifier_Config $config
18 * @param HTMLPurifier_Context $context
19 * @return HTMLPurifier_Token[]
20 */
21 public function tokenizeHTML($html, $config, $context)
22 {
23 $new_html = $this->normalize($html, $config, $context);
24 $new_html = $this->wrapHTML($new_html, $config, $context);
25 try {
26 $parser = new HTML5($new_html);
27 $doc = $parser->save();
28 } catch (DOMException $e) {
29 // Uh oh, it failed. Punt to DirectLex.
30 $lexer = new HTMLPurifier_Lexer_DirectLex();
31 $context->register('PH5PError', $e); // save the error, so we can detect it
32 return $lexer->tokenizeHTML($html, $config, $context); // use original HTML
33 }
34 $tokens = array();
35 $this->tokenizeDOM(
36 $doc->getElementsByTagName('html')->item(0)-> // <html>
37 getElementsByTagName('body')->item(0)-> // <body>
38 getElementsByTagName('div')->item(0) // <div>
39 ,
40 $tokens
41 );
42 return $tokens;
43 }
44}
45
46/*
47
48Copyright 2007 Jeroen van der Meer <http://jero.net/>
49
50Permission is hereby granted, free of charge, to any person obtaining a
51copy of this software and associated documentation files (the
52"Software"), to deal in the Software without restriction, including
53without limitation the rights to use, copy, modify, merge, publish,
54distribute, sublicense, and/or sell copies of the Software, and to
55permit persons to whom the Software is furnished to do so, subject to
56the following conditions:
57
58The above copyright notice and this permission notice shall be included
59in all copies or substantial portions of the Software.
60
61THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
62OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
63MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
64IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
65CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
66TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
67SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
68
69*/
70
71class HTML5
72{
73 private $data;
74 private $char;
75 private $EOF;
76 private $state;
77 private $tree;
78 private $token;
79 private $content_model;
80 private $escape = false;
81 private $entities = array(
82 'AElig;',
83 'AElig',
84 'AMP;',
85 'AMP',
86 'Aacute;',
87 'Aacute',
88 'Acirc;',
89 'Acirc',
90 'Agrave;',
91 'Agrave',
92 'Alpha;',
93 'Aring;',
94 'Aring',
95 'Atilde;',
96 'Atilde',
97 'Auml;',
98 'Auml',
99 'Beta;',
100 'COPY;',
101 'COPY',
102 'Ccedil;',
103 'Ccedil',
104 'Chi;',
105 'Dagger;',
106 'Delta;',
107 'ETH;',
108 'ETH',
109 'Eacute;',
110 'Eacute',
111 'Ecirc;',
112 'Ecirc',
113 'Egrave;',
114 'Egrave',
115 'Epsilon;',
116 'Eta;',
117 'Euml;',
118 'Euml',
119 'GT;',
120 'GT',
121 'Gamma;',
122 'Iacute;',
123 'Iacute',
124 'Icirc;',
125 'Icirc',
126 'Igrave;',
127 'Igrave',
128 'Iota;',
129 'Iuml;',
130 'Iuml',
131 'Kappa;',
132 'LT;',
133 'LT',
134 'Lambda;',
135 'Mu;',
136 'Ntilde;',
137 'Ntilde',
138 'Nu;',
139 'OElig;',
140 'Oacute;',
141 'Oacute',
142 'Ocirc;',
143 'Ocirc',
144 'Ograve;',
145 'Ograve',
146 'Omega;',
147 'Omicron;',
148 'Oslash;',
149 'Oslash',
150 'Otilde;',
151 'Otilde',
152 'Ouml;',
153 'Ouml',
154 'Phi;',
155 'Pi;',
156 'Prime;',
157 'Psi;',
158 'QUOT;',
159 'QUOT',
160 'REG;',
161 'REG',
162 'Rho;',
163 'Scaron;',
164 'Sigma;',
165 'THORN;',
166 'THORN',
167 'TRADE;',
168 'Tau;',
169 'Theta;',
170 'Uacute;',
171 'Uacute',
172 'Ucirc;',
173 'Ucirc',
174 'Ugrave;',
175 'Ugrave',
176 'Upsilon;',
177 'Uuml;',
178 'Uuml',
179 'Xi;',
180 'Yacute;',
181 'Yacute',
182 'Yuml;',
183 'Zeta;',
184 'aacute;',
185 'aacute',
186 'acirc;',
187 'acirc',
188 'acute;',
189 'acute',
190 'aelig;',
191 'aelig',
192 'agrave;',
193 'agrave',
194 'alefsym;',
195 'alpha;',
196 'amp;',
197 'amp',
198 'and;',
199 'ang;',
200 'apos;',
201 'aring;',
202 'aring',
203 'asymp;',
204 'atilde;',
205 'atilde',
206 'auml;',
207 'auml',
208 'bdquo;',
209 'beta;',
210 'brvbar;',
211 'brvbar',
212 'bull;',
213 'cap;',
214 'ccedil;',
215 'ccedil',
216 'cedil;',
217 'cedil',
218 'cent;',
219 'cent',
220 'chi;',
221 'circ;',
222 'clubs;',
223 'cong;',
224 'copy;',
225 'copy',
226 'crarr;',
227 'cup;',
228 'curren;',
229 'curren',
230 'dArr;',
231 'dagger;',
232 'darr;',
233 'deg;',
234 'deg',
235 'delta;',
236 'diams;',
237 'divide;',
238 'divide',
239 'eacute;',
240 'eacute',
241 'ecirc;',
242 'ecirc',
243 'egrave;',
244 'egrave',
245 'empty;',
246 'emsp;',
247 'ensp;',
248 'epsilon;',
249 'equiv;',
250 'eta;',
251 'eth;',
252 'eth',
253 'euml;',
254 'euml',
255 'euro;',
256 'exist;',
257 'fnof;',
258 'forall;',
259 'frac12;',
260 'frac12',
261 'frac14;',
262 'frac14',
263 'frac34;',
264 'frac34',
265 'frasl;',
266 'gamma;',
267 'ge;',
268 'gt;',
269 'gt',
270 'hArr;',
271 'harr;',
272 'hearts;',
273 'hellip;',
274 'iacute;',
275 'iacute',
276 'icirc;',
277 'icirc',
278 'iexcl;',
279 'iexcl',
280 'igrave;',
281 'igrave',
282 'image;',
283 'infin;',
284 'int;',
285 'iota;',
286 'iquest;',
287 'iquest',
288 'isin;',
289 'iuml;',
290 'iuml',
291 'kappa;',
292 'lArr;',
293 'lambda;',
294 'lang;',
295 'laquo;',
296 'laquo',
297 'larr;',
298 'lceil;',
299 'ldquo;',
300 'le;',
301 'lfloor;',
302 'lowast;',
303 'loz;',
304 'lrm;',
305 'lsaquo;',
306 'lsquo;',
307 'lt;',
308 'lt',
309 'macr;',
310 'macr',
311 'mdash;',
312 'micro;',
313 'micro',
314 'middot;',
315 'middot',
316 'minus;',
317 'mu;',
318 'nabla;',
319 'nbsp;',
320 'nbsp',
321 'ndash;',
322 'ne;',
323 'ni;',
324 'not;',
325 'not',
326 'notin;',
327 'nsub;',
328 'ntilde;',
329 'ntilde',
330 'nu;',
331 'oacute;',
332 'oacute',
333 'ocirc;',
334 'ocirc',
335 'oelig;',
336 'ograve;',
337 'ograve',
338 'oline;',
339 'omega;',
340 'omicron;',
341 'oplus;',
342 'or;',
343 'ordf;',
344 'ordf',
345 'ordm;',
346 'ordm',
347 'oslash;',
348 'oslash',
349 'otilde;',
350 'otilde',
351 'otimes;',
352 'ouml;',
353 'ouml',
354 'para;',
355 'para',
356 'part;',
357 'permil;',
358 'perp;',
359 'phi;',
360 'pi;',
361 'piv;',
362 'plusmn;',
363 'plusmn',
364 'pound;',
365 'pound',
366 'prime;',
367 'prod;',
368 'prop;',
369 'psi;',
370 'quot;',
371 'quot',
372 'rArr;',
373 'radic;',
374 'rang;',
375 'raquo;',
376 'raquo',
377 'rarr;',
378 'rceil;',
379 'rdquo;',
380 'real;',
381 'reg;',
382 'reg',
383 'rfloor;',
384 'rho;',
385 'rlm;',
386 'rsaquo;',
387 'rsquo;',
388 'sbquo;',
389 'scaron;',
390 'sdot;',
391 'sect;',
392 'sect',
393 'shy;',
394 'shy',
395 'sigma;',
396 'sigmaf;',
397 'sim;',
398 'spades;',
399 'sub;',
400 'sube;',
401 'sum;',
402 'sup1;',
403 'sup1',
404 'sup2;',
405 'sup2',
406 'sup3;',
407 'sup3',
408 'sup;',
409 'supe;',
410 'szlig;',
411 'szlig',
412 'tau;',
413 'there4;',
414 'theta;',
415 'thetasym;',
416 'thinsp;',
417 'thorn;',
418 'thorn',
419 'tilde;',
420 'times;',
421 'times',
422 'trade;',
423 'uArr;',
424 'uacute;',
425 'uacute',
426 'uarr;',
427 'ucirc;',
428 'ucirc',
429 'ugrave;',
430 'ugrave',
431 'uml;',
432 'uml',
433 'upsih;',
434 'upsilon;',
435 'uuml;',
436 'uuml',
437 'weierp;',
438 'xi;',
439 'yacute;',
440 'yacute',
441 'yen;',
442 'yen',
443 'yuml;',
444 'yuml',
445 'zeta;',
446 'zwj;',
447 'zwnj;'
448 );
449
450 const PCDATA = 0;
451 const RCDATA = 1;
452 const CDATA = 2;
453 const PLAINTEXT = 3;
454
455 const DOCTYPE = 0;
456 const STARTTAG = 1;
457 const ENDTAG = 2;
458 const COMMENT = 3;
459 const CHARACTR = 4;
460 const EOF = 5;
461
462 public function __construct($data)
463 {
464 $this->data = $data;
465 $this->char = -1;
466 $this->EOF = strlen($data);
467 $this->tree = new HTML5TreeConstructer;
468 $this->content_model = self::PCDATA;
469
470 $this->state = 'data';
471
472 while ($this->state !== null) {
473 $this->{$this->state . 'State'}();
474 }
475 }
476
477 public function save()
478 {
479 return $this->tree->save();
480 }
481
482 private function char()
483 {
484 return ($this->char < $this->EOF)
485 ? $this->data[$this->char]
486 : false;
487 }
488
489 private function character($s, $l = 0)
490 {
491 if ($s + $l < $this->EOF) {
492 if ($l === 0) {
493 return $this->data[$s];
494 } else {
495 return substr($this->data, $s, $l);
496 }
497 }
498 }
499
500 private function characters($char_class, $start)
501 {
502 return preg_replace('#^([' . $char_class . ']+).*#s', '\\1', substr($this->data, $start));
503 }
504
505 private function dataState()
506 {
507 // Consume the next input character
508 $this->char++;
509 $char = $this->char();
510
511 if ($char === '&' && ($this->content_model === self::PCDATA || $this->content_model === self::RCDATA)) {
512 /* U+0026 AMPERSAND (&)
513 When the content model flag is set to one of the PCDATA or RCDATA
514 states: switch to the entity data state. Otherwise: treat it as per
515 the "anything else" entry below. */
516 $this->state = 'entityData';
517
518 } elseif ($char === '-') {
519 /* If the content model flag is set to either the RCDATA state or
520 the CDATA state, and the escape flag is false, and there are at
521 least three characters before this one in the input stream, and the
522 last four characters in the input stream, including this one, are
523 U+003C LESS-THAN SIGN, U+0021 EXCLAMATION MARK, U+002D HYPHEN-MINUS,
524 and U+002D HYPHEN-MINUS ("<!--"), then set the escape flag to true. */
525 if (($this->content_model === self::RCDATA || $this->content_model ===
526 self::CDATA) && $this->escape === false &&
527 $this->char >= 3 && $this->character($this->char - 4, 4) === '<!--'
528 ) {
529 $this->escape = true;
530 }
531
532 /* In any case, emit the input character as a character token. Stay
533 in the data state. */
534 $this->emitToken(
535 array(
536 'type' => self::CHARACTR,
537 'data' => $char
538 )
539 );
540
541 /* U+003C LESS-THAN SIGN (<) */
542 } elseif ($char === '<' && ($this->content_model === self::PCDATA ||
543 (($this->content_model === self::RCDATA ||
544 $this->content_model === self::CDATA) && $this->escape === false))
545 ) {
546 /* When the content model flag is set to the PCDATA state: switch
547 to the tag open state.
548
549 When the content model flag is set to either the RCDATA state or
550 the CDATA state and the escape flag is false: switch to the tag
551 open state.
552
553 Otherwise: treat it as per the "anything else" entry below. */
554 $this->state = 'tagOpen';
555
556 /* U+003E GREATER-THAN SIGN (>) */
557 } elseif ($char === '>') {
558 /* If the content model flag is set to either the RCDATA state or
559 the CDATA state, and the escape flag is true, and the last three
560 characters in the input stream including this one are U+002D
561 HYPHEN-MINUS, U+002D HYPHEN-MINUS, U+003E GREATER-THAN SIGN ("-->"),
562 set the escape flag to false. */
563 if (($this->content_model === self::RCDATA ||
564 $this->content_model === self::CDATA) && $this->escape === true &&
565 $this->character($this->char, 3) === '-->'
566 ) {
567 $this->escape = false;
568 }
569
570 /* In any case, emit the input character as a character token.
571 Stay in the data state. */
572 $this->emitToken(
573 array(
574 'type' => self::CHARACTR,
575 'data' => $char
576 )
577 );
578
579 } elseif ($this->char === $this->EOF) {
580 /* EOF
581 Emit an end-of-file token. */
582 $this->EOF();
583
584 } elseif ($this->content_model === self::PLAINTEXT) {
585 /* When the content model flag is set to the PLAINTEXT state
586 THIS DIFFERS GREATLY FROM THE SPEC: Get the remaining characters of
587 the text and emit it as a character token. */
588 $this->emitToken(
589 array(
590 'type' => self::CHARACTR,
591 'data' => substr($this->data, $this->char)
592 )
593 );
594
595 $this->EOF();
596
597 } else {
598 /* Anything else
599 THIS DIFFERS GREATLY FROM THE SPEC: Get as many character that
600 otherwise would also be treated as a character token and emit it
601 as a single character token. Stay in the data state. */
602 $len = strcspn($this->data, '<&', $this->char);
603 $char = substr($this->data, $this->char, $len);
604 $this->char += $len - 1;
605
606 $this->emitToken(
607 array(
608 'type' => self::CHARACTR,
609 'data' => $char
610 )
611 );
612
613 $this->state = 'data';
614 }
615 }
616
617 private function entityDataState()
618 {
619 // Attempt to consume an entity.
620 $entity = $this->entity();
621
622 // If nothing is returned, emit a U+0026 AMPERSAND character token.
623 // Otherwise, emit the character token that was returned.
624 $char = (!$entity) ? '&' : $entity;
625 $this->emitToken(
626 array(
627 'type' => self::CHARACTR,
628 'data' => $char
629 )
630 );
631
632 // Finally, switch to the data state.
633 $this->state = 'data';
634 }
635
636 private function tagOpenState()
637 {
638 switch ($this->content_model) {
639 case self::RCDATA:
640 case self::CDATA:
641 /* If the next input character is a U+002F SOLIDUS (/) character,
642 consume it and switch to the close tag open state. If the next
643 input character is not a U+002F SOLIDUS (/) character, emit a
644 U+003C LESS-THAN SIGN character token and switch to the data
645 state to process the next input character. */
646 if ($this->character($this->char + 1) === '/') {
647 $this->char++;
648 $this->state = 'closeTagOpen';
649
650 } else {
651 $this->emitToken(
652 array(
653 'type' => self::CHARACTR,
654 'data' => '<'
655 )
656 );
657
658 $this->state = 'data';
659 }
660 break;
661
662 case self::PCDATA:
663 // If the content model flag is set to the PCDATA state
664 // Consume the next input character:
665 $this->char++;
666 $char = $this->char();
667
668 if ($char === '!') {
669 /* U+0021 EXCLAMATION MARK (!)
670 Switch to the markup declaration open state. */
671 $this->state = 'markupDeclarationOpen';
672
673 } elseif ($char === '/') {
674 /* U+002F SOLIDUS (/)
675 Switch to the close tag open state. */
676 $this->state = 'closeTagOpen';
677
678 } elseif (preg_match('/^[A-Za-z]$/', $char)) {
679 /* U+0041 LATIN LETTER A through to U+005A LATIN LETTER Z
680 Create a new start tag token, set its tag name to the lowercase
681 version of the input character (add 0x0020 to the character's code
682 point), then switch to the tag name state. (Don't emit the token
683 yet; further details will be filled in before it is emitted.) */
684 $this->token = array(
685 'name' => strtolower($char),
686 'type' => self::STARTTAG,
687 'attr' => array()
688 );
689
690 $this->state = 'tagName';
691
692 } elseif ($char === '>') {
693 /* U+003E GREATER-THAN SIGN (>)
694 Parse error. Emit a U+003C LESS-THAN SIGN character token and a
695 U+003E GREATER-THAN SIGN character token. Switch to the data state. */
696 $this->emitToken(
697 array(
698 'type' => self::CHARACTR,
699 'data' => '<>'
700 )
701 );
702
703 $this->state = 'data';
704
705 } elseif ($char === '?') {
706 /* U+003F QUESTION MARK (?)
707 Parse error. Switch to the bogus comment state. */
708 $this->state = 'bogusComment';
709
710 } else {
711 /* Anything else
712 Parse error. Emit a U+003C LESS-THAN SIGN character token and
713 reconsume the current input character in the data state. */
714 $this->emitToken(
715 array(
716 'type' => self::CHARACTR,
717 'data' => '<'
718 )
719 );
720
721 $this->char--;
722 $this->state = 'data';
723 }
724 break;
725 }
726 }
727
728 private function closeTagOpenState()
729 {
730 $next_node = strtolower($this->characters('A-Za-z', $this->char + 1));
731 $the_same = count($this->tree->stack) > 0 && $next_node === end($this->tree->stack)->nodeName;
732
733 if (($this->content_model === self::RCDATA || $this->content_model === self::CDATA) &&
734 (!$the_same || ($the_same && (!preg_match(
735 '/[\t\n\x0b\x0c >\/]/',
736 $this->character($this->char + 1 + strlen($next_node))
737 ) || $this->EOF === $this->char)))
738 ) {
739 /* If the content model flag is set to the RCDATA or CDATA states then
740 examine the next few characters. If they do not match the tag name of
741 the last start tag token emitted (case insensitively), or if they do but
742 they are not immediately followed by one of the following characters:
743 * U+0009 CHARACTER TABULATION
744 * U+000A LINE FEED (LF)
745 * U+000B LINE TABULATION
746 * U+000C FORM FEED (FF)
747 * U+0020 SPACE
748 * U+003E GREATER-THAN SIGN (>)
749 * U+002F SOLIDUS (/)
750 * EOF
751 ...then there is a parse error. Emit a U+003C LESS-THAN SIGN character
752 token, a U+002F SOLIDUS character token, and switch to the data state
753 to process the next input character. */
754 $this->emitToken(
755 array(
756 'type' => self::CHARACTR,
757 'data' => '</'
758 )
759 );
760
761 $this->state = 'data';
762
763 } else {
764 /* Otherwise, if the content model flag is set to the PCDATA state,
765 or if the next few characters do match that tag name, consume the
766 next input character: */
767 $this->char++;
768 $char = $this->char();
769
770 if (preg_match('/^[A-Za-z]$/', $char)) {
771 /* U+0041 LATIN LETTER A through to U+005A LATIN LETTER Z
772 Create a new end tag token, set its tag name to the lowercase version
773 of the input character (add 0x0020 to the character's code point), then
774 switch to the tag name state. (Don't emit the token yet; further details
775 will be filled in before it is emitted.) */
776 $this->token = array(
777 'name' => strtolower($char),
778 'type' => self::ENDTAG
779 );
780
781 $this->state = 'tagName';
782
783 } elseif ($char === '>') {
784 /* U+003E GREATER-THAN SIGN (>)
785 Parse error. Switch to the data state. */
786 $this->state = 'data';
787
788 } elseif ($this->char === $this->EOF) {
789 /* EOF
790 Parse error. Emit a U+003C LESS-THAN SIGN character token and a U+002F
791 SOLIDUS character token. Reconsume the EOF character in the data state. */
792 $this->emitToken(
793 array(
794 'type' => self::CHARACTR,
795 'data' => '</'
796 )
797 );
798
799 $this->char--;
800 $this->state = 'data';
801
802 } else {
803 /* Parse error. Switch to the bogus comment state. */
804 $this->state = 'bogusComment';
805 }
806 }
807 }
808
809 private function tagNameState()
810 {
811 // Consume the next input character:
812 $this->char++;
813 $char = $this->character($this->char);
814
815 if (preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
816 /* U+0009 CHARACTER TABULATION
817 U+000A LINE FEED (LF)
818 U+000B LINE TABULATION
819 U+000C FORM FEED (FF)
820 U+0020 SPACE
821 Switch to the before attribute name state. */
822 $this->state = 'beforeAttributeName';
823
824 } elseif ($char === '>') {
825 /* U+003E GREATER-THAN SIGN (>)
826 Emit the current tag token. Switch to the data state. */
827 $this->emitToken($this->token);
828 $this->state = 'data';
829
830 } elseif ($this->char === $this->EOF) {
831 /* EOF
832 Parse error. Emit the current tag token. Reconsume the EOF
833 character in the data state. */
834 $this->emitToken($this->token);
835
836 $this->char--;
837 $this->state = 'data';
838
839 } elseif ($char === '/') {
840 /* U+002F SOLIDUS (/)
841 Parse error unless this is a permitted slash. Switch to the before
842 attribute name state. */
843 $this->state = 'beforeAttributeName';
844
845 } else {
846 /* Anything else
847 Append the current input character to the current tag token's tag name.
848 Stay in the tag name state. */
849 $this->token['name'] .= strtolower($char);
850 $this->state = 'tagName';
851 }
852 }
853
854 private function beforeAttributeNameState()
855 {
856 // Consume the next input character:
857 $this->char++;
858 $char = $this->character($this->char);
859
860 if (preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
861 /* U+0009 CHARACTER TABULATION
862 U+000A LINE FEED (LF)
863 U+000B LINE TABULATION
864 U+000C FORM FEED (FF)
865 U+0020 SPACE
866 Stay in the before attribute name state. */
867 $this->state = 'beforeAttributeName';
868
869 } elseif ($char === '>') {
870 /* U+003E GREATER-THAN SIGN (>)
871 Emit the current tag token. Switch to the data state. */
872 $this->emitToken($this->token);
873 $this->state = 'data';
874
875 } elseif ($char === '/') {
876 /* U+002F SOLIDUS (/)
877 Parse error unless this is a permitted slash. Stay in the before
878 attribute name state. */
879 $this->state = 'beforeAttributeName';
880
881 } elseif ($this->char === $this->EOF) {
882 /* EOF
883 Parse error. Emit the current tag token. Reconsume the EOF
884 character in the data state. */
885 $this->emitToken($this->token);
886
887 $this->char--;
888 $this->state = 'data';
889
890 } else {
891 /* Anything else
892 Start a new attribute in the current tag token. Set that attribute's
893 name to the current input character, and its value to the empty string.
894 Switch to the attribute name state. */
895 $this->token['attr'][] = array(
896 'name' => strtolower($char),
897 'value' => null
898 );
899
900 $this->state = 'attributeName';
901 }
902 }
903
904 private function attributeNameState()
905 {
906 // Consume the next input character:
907 $this->char++;
908 $char = $this->character($this->char);
909
910 if (preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
911 /* U+0009 CHARACTER TABULATION
912 U+000A LINE FEED (LF)
913 U+000B LINE TABULATION
914 U+000C FORM FEED (FF)
915 U+0020 SPACE
916 Stay in the before attribute name state. */
917 $this->state = 'afterAttributeName';
918
919 } elseif ($char === '=') {
920 /* U+003D EQUALS SIGN (=)
921 Switch to the before attribute value state. */
922 $this->state = 'beforeAttributeValue';
923
924 } elseif ($char === '>') {
925 /* U+003E GREATER-THAN SIGN (>)
926 Emit the current tag token. Switch to the data state. */
927 $this->emitToken($this->token);
928 $this->state = 'data';
929
930 } elseif ($char === '/' && $this->character($this->char + 1) !== '>') {
931 /* U+002F SOLIDUS (/)
932 Parse error unless this is a permitted slash. Switch to the before
933 attribute name state. */
934 $this->state = 'beforeAttributeName';
935
936 } elseif ($this->char === $this->EOF) {
937 /* EOF
938 Parse error. Emit the current tag token. Reconsume the EOF
939 character in the data state. */
940 $this->emitToken($this->token);
941
942 $this->char--;
943 $this->state = 'data';
944
945 } else {
946 /* Anything else
947 Append the current input character to the current attribute's name.
948 Stay in the attribute name state. */
949 $last = count($this->token['attr']) - 1;
950 $this->token['attr'][$last]['name'] .= strtolower($char);
951
952 $this->state = 'attributeName';
953 }
954 }
955
956 private function afterAttributeNameState()
957 {
958 // Consume the next input character:
959 $this->char++;
960 $char = $this->character($this->char);
961
962 if (preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
963 /* U+0009 CHARACTER TABULATION
964 U+000A LINE FEED (LF)
965 U+000B LINE TABULATION
966 U+000C FORM FEED (FF)
967 U+0020 SPACE
968 Stay in the after attribute name state. */
969 $this->state = 'afterAttributeName';
970
971 } elseif ($char === '=') {
972 /* U+003D EQUALS SIGN (=)
973 Switch to the before attribute value state. */
974 $this->state = 'beforeAttributeValue';
975
976 } elseif ($char === '>') {
977 /* U+003E GREATER-THAN SIGN (>)
978 Emit the current tag token. Switch to the data state. */
979 $this->emitToken($this->token);
980 $this->state = 'data';
981
982 } elseif ($char === '/' && $this->character($this->char + 1) !== '>') {
983 /* U+002F SOLIDUS (/)
984 Parse error unless this is a permitted slash. Switch to the
985 before attribute name state. */
986 $this->state = 'beforeAttributeName';
987
988 } elseif ($this->char === $this->EOF) {
989 /* EOF
990 Parse error. Emit the current tag token. Reconsume the EOF
991 character in the data state. */
992 $this->emitToken($this->token);
993
994 $this->char--;
995 $this->state = 'data';
996
997 } else {
998 /* Anything else
999 Start a new attribute in the current tag token. Set that attribute's
1000 name to the current input character, and its value to the empty string.
1001 Switch to the attribute name state. */
1002 $this->token['attr'][] = array(
1003 'name' => strtolower($char),
1004 'value' => null
1005 );
1006
1007 $this->state = 'attributeName';
1008 }
1009 }
1010
1011 private function beforeAttributeValueState()
1012 {
1013 // Consume the next input character:
1014 $this->char++;
1015 $char = $this->character($this->char);
1016
1017 if (preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
1018 /* U+0009 CHARACTER TABULATION
1019 U+000A LINE FEED (LF)
1020 U+000B LINE TABULATION
1021 U+000C FORM FEED (FF)
1022 U+0020 SPACE
1023 Stay in the before attribute value state. */
1024 $this->state = 'beforeAttributeValue';
1025
1026 } elseif ($char === '"') {
1027 /* U+0022 QUOTATION MARK (")
1028 Switch to the attribute value (double-quoted) state. */
1029 $this->state = 'attributeValueDoubleQuoted';
1030
1031 } elseif ($char === '&') {
1032 /* U+0026 AMPERSAND (&)
1033 Switch to the attribute value (unquoted) state and reconsume
1034 this input character. */
1035 $this->char--;
1036 $this->state = 'attributeValueUnquoted';
1037
1038 } elseif ($char === '\'') {
1039 /* U+0027 APOSTROPHE (')
1040 Switch to the attribute value (single-quoted) state. */
1041 $this->state = 'attributeValueSingleQuoted';
1042
1043 } elseif ($char === '>') {
1044 /* U+003E GREATER-THAN SIGN (>)
1045 Emit the current tag token. Switch to the data state. */
1046 $this->emitToken($this->token);
1047 $this->state = 'data';
1048
1049 } else {
1050 /* Anything else
1051 Append the current input character to the current attribute's value.
1052 Switch to the attribute value (unquoted) state. */
1053 $last = count($this->token['attr']) - 1;
1054 $this->token['attr'][$last]['value'] .= $char;
1055
1056 $this->state = 'attributeValueUnquoted';
1057 }
1058 }
1059
1060 private function attributeValueDoubleQuotedState()
1061 {
1062 // Consume the next input character:
1063 $this->char++;
1064 $char = $this->character($this->char);
1065
1066 if ($char === '"') {
1067 /* U+0022 QUOTATION MARK (")
1068 Switch to the before attribute name state. */
1069 $this->state = 'beforeAttributeName';
1070
1071 } elseif ($char === '&') {
1072 /* U+0026 AMPERSAND (&)
1073 Switch to the entity in attribute value state. */
1074 $this->entityInAttributeValueState('double');
1075
1076 } elseif ($this->char === $this->EOF) {
1077 /* EOF
1078 Parse error. Emit the current tag token. Reconsume the character
1079 in the data state. */
1080 $this->emitToken($this->token);
1081
1082 $this->char--;
1083 $this->state = 'data';
1084
1085 } else {
1086 /* Anything else
1087 Append the current input character to the current attribute's value.
1088 Stay in the attribute value (double-quoted) state. */
1089 $last = count($this->token['attr']) - 1;
1090 $this->token['attr'][$last]['value'] .= $char;
1091
1092 $this->state = 'attributeValueDoubleQuoted';
1093 }
1094 }
1095
1096 private function attributeValueSingleQuotedState()
1097 {
1098 // Consume the next input character:
1099 $this->char++;
1100 $char = $this->character($this->char);
1101
1102 if ($char === '\'') {
1103 /* U+0022 QUOTATION MARK (')
1104 Switch to the before attribute name state. */
1105 $this->state = 'beforeAttributeName';
1106
1107 } elseif ($char === '&') {
1108 /* U+0026 AMPERSAND (&)
1109 Switch to the entity in attribute value state. */
1110 $this->entityInAttributeValueState('single');
1111
1112 } elseif ($this->char === $this->EOF) {
1113 /* EOF
1114 Parse error. Emit the current tag token. Reconsume the character
1115 in the data state. */
1116 $this->emitToken($this->token);
1117
1118 $this->char--;
1119 $this->state = 'data';
1120
1121 } else {
1122 /* Anything else
1123 Append the current input character to the current attribute's value.
1124 Stay in the attribute value (single-quoted) state. */
1125 $last = count($this->token['attr']) - 1;
1126 $this->token['attr'][$last]['value'] .= $char;
1127
1128 $this->state = 'attributeValueSingleQuoted';
1129 }
1130 }
1131
1132 private function attributeValueUnquotedState()
1133 {
1134 // Consume the next input character:
1135 $this->char++;
1136 $char = $this->character($this->char);
1137
1138 if (preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
1139 /* U+0009 CHARACTER TABULATION
1140 U+000A LINE FEED (LF)
1141 U+000B LINE TABULATION
1142 U+000C FORM FEED (FF)
1143 U+0020 SPACE
1144 Switch to the before attribute name state. */
1145 $this->state = 'beforeAttributeName';
1146
1147 } elseif ($char === '&') {
1148 /* U+0026 AMPERSAND (&)
1149 Switch to the entity in attribute value state. */
1150 $this->entityInAttributeValueState();
1151
1152 } elseif ($char === '>') {
1153 /* U+003E GREATER-THAN SIGN (>)
1154 Emit the current tag token. Switch to the data state. */
1155 $this->emitToken($this->token);
1156 $this->state = 'data';
1157
1158 } else {
1159 /* Anything else
1160 Append the current input character to the current attribute's value.
1161 Stay in the attribute value (unquoted) state. */
1162 $last = count($this->token['attr']) - 1;
1163 $this->token['attr'][$last]['value'] .= $char;
1164
1165 $this->state = 'attributeValueUnquoted';
1166 }
1167 }
1168
1169 private function entityInAttributeValueState()
1170 {
1171 // Attempt to consume an entity.
1172 $entity = $this->entity();
1173
1174 // If nothing is returned, append a U+0026 AMPERSAND character to the
1175 // current attribute's value. Otherwise, emit the character token that
1176 // was returned.
1177 $char = (!$entity)
1178 ? '&'
1179 : $entity;
1180
1181 $last = count($this->token['attr']) - 1;
1182 $this->token['attr'][$last]['value'] .= $char;
1183 }
1184
1185 private function bogusCommentState()
1186 {
1187 /* Consume every character up to the first U+003E GREATER-THAN SIGN
1188 character (>) or the end of the file (EOF), whichever comes first. Emit
1189 a comment token whose data is the concatenation of all the characters
1190 starting from and including the character that caused the state machine
1191 to switch into the bogus comment state, up to and including the last
1192 consumed character before the U+003E character, if any, or up to the
1193 end of the file otherwise. (If the comment was started by the end of
1194 the file (EOF), the token is empty.) */
1195 $data = $this->characters('^>', $this->char);
1196 $this->emitToken(
1197 array(
1198 'data' => $data,
1199 'type' => self::COMMENT
1200 )
1201 );
1202
1203 $this->char += strlen($data);
1204
1205 /* Switch to the data state. */
1206 $this->state = 'data';
1207
1208 /* If the end of the file was reached, reconsume the EOF character. */
1209 if ($this->char === $this->EOF) {
1210 $this->char = $this->EOF - 1;
1211 }
1212 }
1213
1214 private function markupDeclarationOpenState()
1215 {
1216 /* If the next two characters are both U+002D HYPHEN-MINUS (-)
1217 characters, consume those two characters, create a comment token whose
1218 data is the empty string, and switch to the comment state. */
1219 if ($this->character($this->char + 1, 2) === '--') {
1220 $this->char += 2;
1221 $this->state = 'comment';
1222 $this->token = array(
1223 'data' => null,
1224 'type' => self::COMMENT
1225 );
1226
1227 /* Otherwise if the next seven chacacters are a case-insensitive match
1228 for the word "DOCTYPE", then consume those characters and switch to the
1229 DOCTYPE state. */
1230 } elseif (strtolower($this->character($this->char + 1, 7)) === 'doctype') {
1231 $this->char += 7;
1232 $this->state = 'doctype';
1233
1234 /* Otherwise, is is a parse error. Switch to the bogus comment state.
1235 The next character that is consumed, if any, is the first character
1236 that will be in the comment. */
1237 } else {
1238 $this->char++;
1239 $this->state = 'bogusComment';
1240 }
1241 }
1242
1243 private function commentState()
1244 {
1245 /* Consume the next input character: */
1246 $this->char++;
1247 $char = $this->char();
1248
1249 /* U+002D HYPHEN-MINUS (-) */
1250 if ($char === '-') {
1251 /* Switch to the comment dash state */
1252 $this->state = 'commentDash';
1253
1254 /* EOF */
1255 } elseif ($this->char === $this->EOF) {
1256 /* Parse error. Emit the comment token. Reconsume the EOF character
1257 in the data state. */
1258 $this->emitToken($this->token);
1259 $this->char--;
1260 $this->state = 'data';
1261
1262 /* Anything else */
1263 } else {
1264 /* Append the input character to the comment token's data. Stay in
1265 the comment state. */
1266 $this->token['data'] .= $char;
1267 }
1268 }
1269
1270 private function commentDashState()
1271 {
1272 /* Consume the next input character: */
1273 $this->char++;
1274 $char = $this->char();
1275
1276 /* U+002D HYPHEN-MINUS (-) */
1277 if ($char === '-') {
1278 /* Switch to the comment end state */
1279 $this->state = 'commentEnd';
1280
1281 /* EOF */
1282 } elseif ($this->char === $this->EOF) {
1283 /* Parse error. Emit the comment token. Reconsume the EOF character
1284 in the data state. */
1285 $this->emitToken($this->token);
1286 $this->char--;
1287 $this->state = 'data';
1288
1289 /* Anything else */
1290 } else {
1291 /* Append a U+002D HYPHEN-MINUS (-) character and the input
1292 character to the comment token's data. Switch to the comment state. */
1293 $this->token['data'] .= '-' . $char;
1294 $this->state = 'comment';
1295 }
1296 }
1297
1298 private function commentEndState()
1299 {
1300 /* Consume the next input character: */
1301 $this->char++;
1302 $char = $this->char();
1303
1304 if ($char === '>') {
1305 $this->emitToken($this->token);
1306 $this->state = 'data';
1307
1308 } elseif ($char === '-') {
1309 $this->token['data'] .= '-';
1310
1311 } elseif ($this->char === $this->EOF) {
1312 $this->emitToken($this->token);
1313 $this->char--;
1314 $this->state = 'data';
1315
1316 } else {
1317 $this->token['data'] .= '--' . $char;
1318 $this->state = 'comment';
1319 }
1320 }
1321
1322 private function doctypeState()
1323 {
1324 /* Consume the next input character: */
1325 $this->char++;
1326 $char = $this->char();
1327
1328 if (preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
1329 $this->state = 'beforeDoctypeName';
1330
1331 } else {
1332 $this->char--;
1333 $this->state = 'beforeDoctypeName';
1334 }
1335 }
1336
1337 private function beforeDoctypeNameState()
1338 {
1339 /* Consume the next input character: */
1340 $this->char++;
1341 $char = $this->char();
1342
1343 if (preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
1344 // Stay in the before DOCTYPE name state.
1345
1346 } elseif (preg_match('/^[a-z]$/', $char)) {
1347 $this->token = array(
1348 'name' => strtoupper($char),
1349 'type' => self::DOCTYPE,
1350 'error' => true
1351 );
1352
1353 $this->state = 'doctypeName';
1354
1355 } elseif ($char === '>') {
1356 $this->emitToken(
1357 array(
1358 'name' => null,
1359 'type' => self::DOCTYPE,
1360 'error' => true
1361 )
1362 );
1363
1364 $this->state = 'data';
1365
1366 } elseif ($this->char === $this->EOF) {
1367 $this->emitToken(
1368 array(
1369 'name' => null,
1370 'type' => self::DOCTYPE,
1371 'error' => true
1372 )
1373 );
1374
1375 $this->char--;
1376 $this->state = 'data';
1377
1378 } else {
1379 $this->token = array(
1380 'name' => $char,
1381 'type' => self::DOCTYPE,
1382 'error' => true
1383 );
1384
1385 $this->state = 'doctypeName';
1386 }
1387 }
1388
1389 private function doctypeNameState()
1390 {
1391 /* Consume the next input character: */
1392 $this->char++;
1393 $char = $this->char();
1394
1395 if (preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
1396 $this->state = 'AfterDoctypeName';
1397
1398 } elseif ($char === '>') {
1399 $this->emitToken($this->token);
1400 $this->state = 'data';
1401
1402 } elseif (preg_match('/^[a-z]$/', $char)) {
1403 $this->token['name'] .= strtoupper($char);
1404
1405 } elseif ($this->char === $this->EOF) {
1406 $this->emitToken($this->token);
1407 $this->char--;
1408 $this->state = 'data';
1409
1410 } else {
1411 $this->token['name'] .= $char;
1412 }
1413
1414 $this->token['error'] = ($this->token['name'] === 'HTML')
1415 ? false
1416 : true;
1417 }
1418
1419 private function afterDoctypeNameState()
1420 {
1421 /* Consume the next input character: */
1422 $this->char++;
1423 $char = $this->char();
1424
1425 if (preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
1426 // Stay in the DOCTYPE name state.
1427
1428 } elseif ($char === '>') {
1429 $this->emitToken($this->token);
1430 $this->state = 'data';
1431
1432 } elseif ($this->char === $this->EOF) {
1433 $this->emitToken($this->token);
1434 $this->char--;
1435 $this->state = 'data';
1436
1437 } else {
1438 $this->token['error'] = true;
1439 $this->state = 'bogusDoctype';
1440 }
1441 }
1442
1443 private function bogusDoctypeState()
1444 {
1445 /* Consume the next input character: */
1446 $this->char++;
1447 $char = $this->char();
1448
1449 if ($char === '>') {
1450 $this->emitToken($this->token);
1451 $this->state = 'data';
1452
1453 } elseif ($this->char === $this->EOF) {
1454 $this->emitToken($this->token);
1455 $this->char--;
1456 $this->state = 'data';
1457
1458 } else {
1459 // Stay in the bogus DOCTYPE state.
1460 }
1461 }
1462
1463 private function entity()
1464 {
1465 $start = $this->char;
1466
1467 // This section defines how to consume an entity. This definition is
1468 // used when parsing entities in text and in attributes.
1469
1470 // The behaviour depends on the identity of the next character (the
1471 // one immediately after the U+0026 AMPERSAND character):
1472
1473 switch ($this->character($this->char + 1)) {
1474 // U+0023 NUMBER SIGN (#)
1475 case '#':
1476
1477 // The behaviour further depends on the character after the
1478 // U+0023 NUMBER SIGN:
1479 switch ($this->character($this->char + 1)) {
1480 // U+0078 LATIN SMALL LETTER X
1481 // U+0058 LATIN CAPITAL LETTER X
1482 case 'x':
1483 case 'X':
1484 // Follow the steps below, but using the range of
1485 // characters U+0030 DIGIT ZERO through to U+0039 DIGIT
1486 // NINE, U+0061 LATIN SMALL LETTER A through to U+0066
1487 // LATIN SMALL LETTER F, and U+0041 LATIN CAPITAL LETTER
1488 // A, through to U+0046 LATIN CAPITAL LETTER F (in other
1489 // words, 0-9, A-F, a-f).
1490 $char = 1;
1491 $char_class = '0-9A-Fa-f';
1492 break;
1493
1494 // Anything else
1495 default:
1496 // Follow the steps below, but using the range of
1497 // characters U+0030 DIGIT ZERO through to U+0039 DIGIT
1498 // NINE (i.e. just 0-9).
1499 $char = 0;
1500 $char_class = '0-9';
1501 break;
1502 }
1503
1504 // Consume as many characters as match the range of characters
1505 // given above.
1506 $this->char++;
1507 $e_name = $this->characters($char_class, $this->char + $char + 1);
1508 $entity = $this->character($start, $this->char);
1509 $cond = strlen($e_name) > 0;
1510
1511 // The rest of the parsing happens bellow.
1512 break;
1513
1514 // Anything else
1515 default:
1516 // Consume the maximum number of characters possible, with the
1517 // consumed characters case-sensitively matching one of the
1518 // identifiers in the first column of the entities table.
1519 $e_name = $this->characters('0-9A-Za-z;', $this->char + 1);
1520 $len = strlen($e_name);
1521
1522 for ($c = 1; $c <= $len; $c++) {
1523 $id = substr($e_name, 0, $c);
1524 $this->char++;
1525
1526 if (in_array($id, $this->entities)) {
1527 if ($e_name[$c - 1] !== ';') {
1528 if ($c < $len && $e_name[$c] == ';') {
1529 $this->char++; // consume extra semicolon
1530 }
1531 }
1532 $entity = $id;
1533 break;
1534 }
1535 }
1536
1537 $cond = isset($entity);
1538 // The rest of the parsing happens bellow.
1539 break;
1540 }
1541
1542 if (!$cond) {
1543 // If no match can be made, then this is a parse error. No
1544 // characters are consumed, and nothing is returned.
1545 $this->char = $start;
1546 return false;
1547 }
1548
1549 // Return a character token for the character corresponding to the
1550 // entity name (as given by the second column of the entities table).
1551 return html_entity_decode('&' . $entity . ';', ENT_QUOTES, 'UTF-8');
1552 }
1553
1554 private function emitToken($token)
1555 {
1556 $emit = $this->tree->emitToken($token);
1557
1558 if (is_int($emit)) {
1559 $this->content_model = $emit;
1560
1561 } elseif ($token['type'] === self::ENDTAG) {
1562 $this->content_model = self::PCDATA;
1563 }
1564 }
1565
1566 private function EOF()
1567 {
1568 $this->state = null;
1569 $this->tree->emitToken(
1570 array(
1571 'type' => self::EOF
1572 )
1573 );
1574 }
1575}
1576
1577class HTML5TreeConstructer
1578{
1579 public $stack = array();
1580
1581 private $phase;
1582 private $mode;
1583 private $dom;
1584 private $foster_parent = null;
1585 private $a_formatting = array();
1586
1587 private $head_pointer = null;
1588 private $form_pointer = null;
1589
1590 private $scoping = array('button', 'caption', 'html', 'marquee', 'object', 'table', 'td', 'th');
1591 private $formatting = array(
1592 'a',
1593 'b',
1594 'big',
1595 'em',
1596 'font',
1597 'i',
1598 'nobr',
1599 's',
1600 'small',
1601 'strike',
1602 'strong',
1603 'tt',
1604 'u'
1605 );
1606 private $special = array(
1607 'address',
1608 'area',
1609 'base',
1610 'basefont',
1611 'bgsound',
1612 'blockquote',
1613 'body',
1614 'br',
1615 'center',
1616 'col',
1617 'colgroup',
1618 'dd',
1619 'dir',
1620 'div',
1621 'dl',
1622 'dt',
1623 'embed',
1624 'fieldset',
1625 'form',
1626 'frame',
1627 'frameset',
1628 'h1',
1629 'h2',
1630 'h3',
1631 'h4',
1632 'h5',
1633 'h6',
1634 'head',
1635 'hr',
1636 'iframe',
1637 'image',
1638 'img',
1639 'input',
1640 'isindex',
1641 'li',
1642 'link',
1643 'listing',
1644 'menu',
1645 'meta',
1646 'noembed',
1647 'noframes',
1648 'noscript',
1649 'ol',
1650 'optgroup',
1651 'option',
1652 'p',
1653 'param',
1654 'plaintext',
1655 'pre',
1656 'script',
1657 'select',
1658 'spacer',
1659 'style',
1660 'tbody',
1661 'textarea',
1662 'tfoot',
1663 'thead',
1664 'title',
1665 'tr',
1666 'ul',
1667 'wbr'
1668 );
1669
1670 // The different phases.
1671 const INIT_PHASE = 0;
1672 const ROOT_PHASE = 1;
1673 const MAIN_PHASE = 2;
1674 const END_PHASE = 3;
1675
1676 // The different insertion modes for the main phase.
1677 const BEFOR_HEAD = 0;
1678 const IN_HEAD = 1;
1679 const AFTER_HEAD = 2;
1680 const IN_BODY = 3;
1681 const IN_TABLE = 4;
1682 const IN_CAPTION = 5;
1683 const IN_CGROUP = 6;
1684 const IN_TBODY = 7;
1685 const IN_ROW = 8;
1686 const IN_CELL = 9;
1687 const IN_SELECT = 10;
1688 const AFTER_BODY = 11;
1689 const IN_FRAME = 12;
1690 const AFTR_FRAME = 13;
1691
1692 // The different types of elements.
1693 const SPECIAL = 0;
1694 const SCOPING = 1;
1695 const FORMATTING = 2;
1696 const PHRASING = 3;
1697
1698 const MARKER = 0;
1699
1700 public function __construct()
1701 {
1702 $this->phase = self::INIT_PHASE;
1703 $this->mode = self::BEFOR_HEAD;
1704 $this->dom = new DOMDocument;
1705
1706 $this->dom->encoding = 'UTF-8';
1707 $this->dom->preserveWhiteSpace = true;
1708 $this->dom->substituteEntities = true;
1709 $this->dom->strictErrorChecking = false;
1710 }
1711
1712 // Process tag tokens
1713 public function emitToken($token)
1714 {
1715 switch ($this->phase) {
1716 case self::INIT_PHASE:
1717 return $this->initPhase($token);
1718 break;
1719 case self::ROOT_PHASE:
1720 return $this->rootElementPhase($token);
1721 break;
1722 case self::MAIN_PHASE:
1723 return $this->mainPhase($token);
1724 break;
1725 case self::END_PHASE :
1726 return $this->trailingEndPhase($token);
1727 break;
1728 }
1729 }
1730
1731 private function initPhase($token)
1732 {
1733 /* Initially, the tree construction stage must handle each token
1734 emitted from the tokenisation stage as follows: */
1735
1736 /* A DOCTYPE token that is marked as being in error
1737 A comment token
1738 A start tag token
1739 An end tag token
1740 A character token that is not one of one of U+0009 CHARACTER TABULATION,
1741 U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
1742 or U+0020 SPACE
1743 An end-of-file token */
1744 if ((isset($token['error']) && $token['error']) ||
1745 $token['type'] === HTML5::COMMENT ||
1746 $token['type'] === HTML5::STARTTAG ||
1747 $token['type'] === HTML5::ENDTAG ||
1748 $token['type'] === HTML5::EOF ||
1749 ($token['type'] === HTML5::CHARACTR && isset($token['data']) &&
1750 !preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data']))
1751 ) {
1752 /* This specification does not define how to handle this case. In
1753 particular, user agents may ignore the entirety of this specification
1754 altogether for such documents, and instead invoke special parse modes
1755 with a greater emphasis on backwards compatibility. */
1756
1757 $this->phase = self::ROOT_PHASE;
1758 return $this->rootElementPhase($token);
1759
1760 /* A DOCTYPE token marked as being correct */
1761 } elseif (isset($token['error']) && !$token['error']) {
1762 /* Append a DocumentType node to the Document node, with the name
1763 attribute set to the name given in the DOCTYPE token (which will be
1764 "HTML"), and the other attributes specific to DocumentType objects
1765 set to null, empty lists, or the empty string as appropriate. */
1766 $doctype = new DOMDocumentType(null, null, 'HTML');
1767
1768 /* Then, switch to the root element phase of the tree construction
1769 stage. */
1770 $this->phase = self::ROOT_PHASE;
1771
1772 /* A character token that is one of one of U+0009 CHARACTER TABULATION,
1773 U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
1774 or U+0020 SPACE */
1775 } elseif (isset($token['data']) && preg_match(
1776 '/^[\t\n\x0b\x0c ]+$/',
1777 $token['data']
1778 )
1779 ) {
1780 /* Append that character to the Document node. */
1781 $text = $this->dom->createTextNode($token['data']);
1782 $this->dom->appendChild($text);
1783 }
1784 }
1785
1786 private function rootElementPhase($token)
1787 {
1788 /* After the initial phase, as each token is emitted from the tokenisation
1789 stage, it must be processed as described in this section. */
1790
1791 /* A DOCTYPE token */
1792 if ($token['type'] === HTML5::DOCTYPE) {
1793 // Parse error. Ignore the token.
1794
1795 /* A comment token */
1796 } elseif ($token['type'] === HTML5::COMMENT) {
1797 /* Append a Comment node to the Document object with the data
1798 attribute set to the data given in the comment token. */
1799 $comment = $this->dom->createComment($token['data']);
1800 $this->dom->appendChild($comment);
1801
1802 /* A character token that is one of one of U+0009 CHARACTER TABULATION,
1803 U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
1804 or U+0020 SPACE */
1805 } elseif ($token['type'] === HTML5::CHARACTR &&
1806 preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])
1807 ) {
1808 /* Append that character to the Document node. */
1809 $text = $this->dom->createTextNode($token['data']);
1810 $this->dom->appendChild($text);
1811
1812 /* A character token that is not one of U+0009 CHARACTER TABULATION,
1813 U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED
1814 (FF), or U+0020 SPACE
1815 A start tag token
1816 An end tag token
1817 An end-of-file token */
1818 } elseif (($token['type'] === HTML5::CHARACTR &&
1819 !preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) ||
1820 $token['type'] === HTML5::STARTTAG ||
1821 $token['type'] === HTML5::ENDTAG ||
1822 $token['type'] === HTML5::EOF
1823 ) {
1824 /* Create an HTMLElement node with the tag name html, in the HTML
1825 namespace. Append it to the Document object. Switch to the main
1826 phase and reprocess the current token. */
1827 $html = $this->dom->createElement('html');
1828 $this->dom->appendChild($html);
1829 $this->stack[] = $html;
1830
1831 $this->phase = self::MAIN_PHASE;
1832 return $this->mainPhase($token);
1833 }
1834 }
1835
1836 private function mainPhase($token)
1837 {
1838 /* Tokens in the main phase must be handled as follows: */
1839
1840 /* A DOCTYPE token */
1841 if ($token['type'] === HTML5::DOCTYPE) {
1842 // Parse error. Ignore the token.
1843
1844 /* A start tag token with the tag name "html" */
1845 } elseif ($token['type'] === HTML5::STARTTAG && $token['name'] === 'html') {
1846 /* If this start tag token was not the first start tag token, then
1847 it is a parse error. */
1848
1849 /* For each attribute on the token, check to see if the attribute
1850 is already present on the top element of the stack of open elements.
1851 If it is not, add the attribute and its corresponding value to that
1852 element. */
1853 foreach ($token['attr'] as $attr) {
1854 if (!$this->stack[0]->hasAttribute($attr['name'])) {
1855 $this->stack[0]->setAttribute($attr['name'], $attr['value']);
1856 }
1857 }
1858
1859 /* An end-of-file token */
1860 } elseif ($token['type'] === HTML5::EOF) {
1861 /* Generate implied end tags. */
1862 $this->generateImpliedEndTags();
1863
1864 /* Anything else. */
1865 } else {
1866 /* Depends on the insertion mode: */
1867 switch ($this->mode) {
1868 case self::BEFOR_HEAD:
1869 return $this->beforeHead($token);
1870 break;
1871 case self::IN_HEAD:
1872 return $this->inHead($token);
1873 break;
1874 case self::AFTER_HEAD:
1875 return $this->afterHead($token);
1876 break;
1877 case self::IN_BODY:
1878 return $this->inBody($token);
1879 break;
1880 case self::IN_TABLE:
1881 return $this->inTable($token);
1882 break;
1883 case self::IN_CAPTION:
1884 return $this->inCaption($token);
1885 break;
1886 case self::IN_CGROUP:
1887 return $this->inColumnGroup($token);
1888 break;
1889 case self::IN_TBODY:
1890 return $this->inTableBody($token);
1891 break;
1892 case self::IN_ROW:
1893 return $this->inRow($token);
1894 break;
1895 case self::IN_CELL:
1896 return $this->inCell($token);
1897 break;
1898 case self::IN_SELECT:
1899 return $this->inSelect($token);
1900 break;
1901 case self::AFTER_BODY:
1902 return $this->afterBody($token);
1903 break;
1904 case self::IN_FRAME:
1905 return $this->inFrameset($token);
1906 break;
1907 case self::AFTR_FRAME:
1908 return $this->afterFrameset($token);
1909 break;
1910 case self::END_PHASE:
1911 return $this->trailingEndPhase($token);
1912 break;
1913 }
1914 }
1915 }
1916
1917 private function beforeHead($token)
1918 {
1919 /* Handle the token as follows: */
1920
1921 /* A character token that is one of one of U+0009 CHARACTER TABULATION,
1922 U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
1923 or U+0020 SPACE */
1924 if ($token['type'] === HTML5::CHARACTR &&
1925 preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])
1926 ) {
1927 /* Append the character to the current node. */
1928 $this->insertText($token['data']);
1929
1930 /* A comment token */
1931 } elseif ($token['type'] === HTML5::COMMENT) {
1932 /* Append a Comment node to the current node with the data attribute
1933 set to the data given in the comment token. */
1934 $this->insertComment($token['data']);
1935
1936 /* A start tag token with the tag name "head" */
1937 } elseif ($token['type'] === HTML5::STARTTAG && $token['name'] === 'head') {
1938 /* Create an element for the token, append the new element to the
1939 current node and push it onto the stack of open elements. */
1940 $element = $this->insertElement($token);
1941
1942 /* Set the head element pointer to this new element node. */
1943 $this->head_pointer = $element;
1944
1945 /* Change the insertion mode to "in head". */
1946 $this->mode = self::IN_HEAD;
1947
1948 /* A start tag token whose tag name is one of: "base", "link", "meta",
1949 "script", "style", "title". Or an end tag with the tag name "html".
1950 Or a character token that is not one of U+0009 CHARACTER TABULATION,
1951 U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
1952 or U+0020 SPACE. Or any other start tag token */
1953 } elseif ($token['type'] === HTML5::STARTTAG ||
1954 ($token['type'] === HTML5::ENDTAG && $token['name'] === 'html') ||
1955 ($token['type'] === HTML5::CHARACTR && !preg_match(
1956 '/^[\t\n\x0b\x0c ]$/',
1957 $token['data']
1958 ))
1959 ) {
1960 /* Act as if a start tag token with the tag name "head" and no
1961 attributes had been seen, then reprocess the current token. */
1962 $this->beforeHead(
1963 array(
1964 'name' => 'head',
1965 'type' => HTML5::STARTTAG,
1966 'attr' => array()
1967 )
1968 );
1969
1970 return $this->inHead($token);
1971
1972 /* Any other end tag */
1973 } elseif ($token['type'] === HTML5::ENDTAG) {
1974 /* Parse error. Ignore the token. */
1975 }
1976 }
1977
1978 private function inHead($token)
1979 {
1980 /* Handle the token as follows: */
1981
1982 /* A character token that is one of one of U+0009 CHARACTER TABULATION,
1983 U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
1984 or U+0020 SPACE.
1985
1986 THIS DIFFERS FROM THE SPEC: If the current node is either a title, style
1987 or script element, append the character to the current node regardless
1988 of its content. */
1989 if (($token['type'] === HTML5::CHARACTR &&
1990 preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) || (
1991 $token['type'] === HTML5::CHARACTR && in_array(
1992 end($this->stack)->nodeName,
1993 array('title', 'style', 'script')
1994 ))
1995 ) {
1996 /* Append the character to the current node. */
1997 $this->insertText($token['data']);
1998
1999 /* A comment token */
2000 } elseif ($token['type'] === HTML5::COMMENT) {
2001 /* Append a Comment node to the current node with the data attribute
2002 set to the data given in the comment token. */
2003 $this->insertComment($token['data']);
2004
2005 } elseif ($token['type'] === HTML5::ENDTAG &&
2006 in_array($token['name'], array('title', 'style', 'script'))
2007 ) {
2008 array_pop($this->stack);
2009 return HTML5::PCDATA;
2010
2011 /* A start tag with the tag name "title" */
2012 } elseif ($token['type'] === HTML5::STARTTAG && $token['name'] === 'title') {
2013 /* Create an element for the token and append the new element to the
2014 node pointed to by the head element pointer, or, if that is null
2015 (innerHTML case), to the current node. */
2016 if ($this->head_pointer !== null) {
2017 $element = $this->insertElement($token, false);
2018 $this->head_pointer->appendChild($element);
2019
2020 } else {
2021 $element = $this->insertElement($token);
2022 }
2023
2024 /* Switch the tokeniser's content model flag to the RCDATA state. */
2025 return HTML5::RCDATA;
2026
2027 /* A start tag with the tag name "style" */
2028 } elseif ($token['type'] === HTML5::STARTTAG && $token['name'] === 'style') {
2029 /* Create an element for the token and append the new element to the
2030 node pointed to by the head element pointer, or, if that is null
2031 (innerHTML case), to the current node. */
2032 if ($this->head_pointer !== null) {
2033 $element = $this->insertElement($token, false);
2034 $this->head_pointer->appendChild($element);
2035
2036 } else {
2037 $this->insertElement($token);
2038 }
2039
2040 /* Switch the tokeniser's content model flag to the CDATA state. */
2041 return HTML5::CDATA;
2042
2043 /* A start tag with the tag name "script" */
2044 } elseif ($token['type'] === HTML5::STARTTAG && $token['name'] === 'script') {
2045 /* Create an element for the token. */
2046 $element = $this->insertElement($token, false);
2047 $this->head_pointer->appendChild($element);
2048
2049 /* Switch the tokeniser's content model flag to the CDATA state. */
2050 return HTML5::CDATA;
2051
2052 /* A start tag with the tag name "base", "link", or "meta" */
2053 } elseif ($token['type'] === HTML5::STARTTAG && in_array(
2054 $token['name'],
2055 array('base', 'link', 'meta')
2056 )
2057 ) {
2058 /* Create an element for the token and append the new element to the
2059 node pointed to by the head element pointer, or, if that is null
2060 (innerHTML case), to the current node. */
2061 if ($this->head_pointer !== null) {
2062 $element = $this->insertElement($token, false);
2063 $this->head_pointer->appendChild($element);
2064 array_pop($this->stack);
2065
2066 } else {
2067 $this->insertElement($token);
2068 }
2069
2070 /* An end tag with the tag name "head" */
2071 } elseif ($token['type'] === HTML5::ENDTAG && $token['name'] === 'head') {
2072 /* If the current node is a head element, pop the current node off
2073 the stack of open elements. */
2074 if ($this->head_pointer->isSameNode(end($this->stack))) {
2075 array_pop($this->stack);
2076
2077 /* Otherwise, this is a parse error. */
2078 } else {
2079 // k
2080 }
2081
2082 /* Change the insertion mode to "after head". */
2083 $this->mode = self::AFTER_HEAD;
2084
2085 /* A start tag with the tag name "head" or an end tag except "html". */
2086 } elseif (($token['type'] === HTML5::STARTTAG && $token['name'] === 'head') ||
2087 ($token['type'] === HTML5::ENDTAG && $token['name'] !== 'html')
2088 ) {
2089 // Parse error. Ignore the token.
2090
2091 /* Anything else */
2092 } else {
2093 /* If the current node is a head element, act as if an end tag
2094 token with the tag name "head" had been seen. */
2095 if ($this->head_pointer->isSameNode(end($this->stack))) {
2096 $this->inHead(
2097 array(
2098 'name' => 'head',
2099 'type' => HTML5::ENDTAG
2100 )
2101 );
2102
2103 /* Otherwise, change the insertion mode to "after head". */
2104 } else {
2105 $this->mode = self::AFTER_HEAD;
2106 }
2107
2108 /* Then, reprocess the current token. */
2109 return $this->afterHead($token);
2110 }
2111 }
2112
2113 private function afterHead($token)
2114 {
2115 /* Handle the token as follows: */
2116
2117 /* A character token that is one of one of U+0009 CHARACTER TABULATION,
2118 U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
2119 or U+0020 SPACE */
2120 if ($token['type'] === HTML5::CHARACTR &&
2121 preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])
2122 ) {
2123 /* Append the character to the current node. */
2124 $this->insertText($token['data']);
2125
2126 /* A comment token */
2127 } elseif ($token['type'] === HTML5::COMMENT) {
2128 /* Append a Comment node to the current node with the data attribute
2129 set to the data given in the comment token. */
2130 $this->insertComment($token['data']);
2131
2132 /* A start tag token with the tag name "body" */
2133 } elseif ($token['type'] === HTML5::STARTTAG && $token['name'] === 'body') {
2134 /* Insert a body element for the token. */
2135 $this->insertElement($token);
2136
2137 /* Change the insertion mode to "in body". */
2138 $this->mode = self::IN_BODY;
2139
2140 /* A start tag token with the tag name "frameset" */
2141 } elseif ($token['type'] === HTML5::STARTTAG && $token['name'] === 'frameset') {
2142 /* Insert a frameset element for the token. */
2143 $this->insertElement($token);
2144
2145 /* Change the insertion mode to "in frameset". */
2146 $this->mode = self::IN_FRAME;
2147
2148 /* A start tag token whose tag name is one of: "base", "link", "meta",
2149 "script", "style", "title" */
2150 } elseif ($token['type'] === HTML5::STARTTAG && in_array(
2151 $token['name'],
2152 array('base', 'link', 'meta', 'script', 'style', 'title')
2153 )
2154 ) {
2155 /* Parse error. Switch the insertion mode back to "in head" and
2156 reprocess the token. */
2157 $this->mode = self::IN_HEAD;
2158 return $this->inHead($token);
2159
2160 /* Anything else */
2161 } else {
2162 /* Act as if a start tag token with the tag name "body" and no
2163 attributes had been seen, and then reprocess the current token. */
2164 $this->afterHead(
2165 array(
2166 'name' => 'body',
2167 'type' => HTML5::STARTTAG,
2168 'attr' => array()
2169 )
2170 );
2171
2172 return $this->inBody($token);
2173 }
2174 }
2175
2176 private function inBody($token)
2177 {
2178 /* Handle the token as follows: */
2179
2180 switch ($token['type']) {
2181 /* A character token */
2182 case HTML5::CHARACTR:
2183 /* Reconstruct the active formatting elements, if any. */
2184 $this->reconstructActiveFormattingElements();
2185
2186 /* Append the token's character to the current node. */
2187 $this->insertText($token['data']);
2188 break;
2189
2190 /* A comment token */
2191 case HTML5::COMMENT:
2192 /* Append a Comment node to the current node with the data
2193 attribute set to the data given in the comment token. */
2194 $this->insertComment($token['data']);
2195 break;
2196
2197 case HTML5::STARTTAG:
2198 switch ($token['name']) {
2199 /* A start tag token whose tag name is one of: "script",
2200 "style" */
2201 case 'script':
2202 case 'style':
2203 /* Process the token as if the insertion mode had been "in
2204 head". */
2205 return $this->inHead($token);
2206 break;
2207
2208 /* A start tag token whose tag name is one of: "base", "link",
2209 "meta", "title" */
2210 case 'base':
2211 case 'link':
2212 case 'meta':
2213 case 'title':
2214 /* Parse error. Process the token as if the insertion mode
2215 had been "in head". */
2216 return $this->inHead($token);
2217 break;
2218
2219 /* A start tag token with the tag name "body" */
2220 case 'body':
2221 /* Parse error. If the second element on the stack of open
2222 elements is not a body element, or, if the stack of open
2223 elements has only one node on it, then ignore the token.
2224 (innerHTML case) */
2225 if (count($this->stack) === 1 || $this->stack[1]->nodeName !== 'body') {
2226 // Ignore
2227
2228 /* Otherwise, for each attribute on the token, check to see
2229 if the attribute is already present on the body element (the
2230 second element) on the stack of open elements. If it is not,
2231 add the attribute and its corresponding value to that
2232 element. */
2233 } else {
2234 foreach ($token['attr'] as $attr) {
2235 if (!$this->stack[1]->hasAttribute($attr['name'])) {
2236 $this->stack[1]->setAttribute($attr['name'], $attr['value']);
2237 }
2238 }
2239 }
2240 break;
2241
2242 /* A start tag whose tag name is one of: "address",
2243 "blockquote", "center", "dir", "div", "dl", "fieldset",
2244 "listing", "menu", "ol", "p", "ul" */
2245 case 'address':
2246 case 'blockquote':
2247 case 'center':
2248 case 'dir':
2249 case 'div':
2250 case 'dl':
2251 case 'fieldset':
2252 case 'listing':
2253 case 'menu':
2254 case 'ol':
2255 case 'p':
2256 case 'ul':
2257 /* If the stack of open elements has a p element in scope,
2258 then act as if an end tag with the tag name p had been
2259 seen. */
2260 if ($this->elementInScope('p')) {
2261 $this->emitToken(
2262 array(
2263 'name' => 'p',
2264 'type' => HTML5::ENDTAG
2265 )
2266 );
2267 }
2268
2269 /* Insert an HTML element for the token. */
2270 $this->insertElement($token);
2271 break;
2272
2273 /* A start tag whose tag name is "form" */
2274 case 'form':
2275 /* If the form element pointer is not null, ignore the
2276 token with a parse error. */
2277 if ($this->form_pointer !== null) {
2278 // Ignore.
2279
2280 /* Otherwise: */
2281 } else {
2282 /* If the stack of open elements has a p element in
2283 scope, then act as if an end tag with the tag name p
2284 had been seen. */
2285 if ($this->elementInScope('p')) {
2286 $this->emitToken(
2287 array(
2288 'name' => 'p',
2289 'type' => HTML5::ENDTAG
2290 )
2291 );
2292 }
2293
2294 /* Insert an HTML element for the token, and set the
2295 form element pointer to point to the element created. */
2296 $element = $this->insertElement($token);
2297 $this->form_pointer = $element;
2298 }
2299 break;
2300
2301 /* A start tag whose tag name is "li", "dd" or "dt" */
2302 case 'li':
2303 case 'dd':
2304 case 'dt':
2305 /* If the stack of open elements has a p element in scope,
2306 then act as if an end tag with the tag name p had been
2307 seen. */
2308 if ($this->elementInScope('p')) {
2309 $this->emitToken(
2310 array(
2311 'name' => 'p',
2312 'type' => HTML5::ENDTAG
2313 )
2314 );
2315 }
2316
2317 $stack_length = count($this->stack) - 1;
2318
2319 for ($n = $stack_length; 0 <= $n; $n--) {
2320 /* 1. Initialise node to be the current node (the
2321 bottommost node of the stack). */
2322 $stop = false;
2323 $node = $this->stack[$n];
2324 $cat = $this->getElementCategory($node->tagName);
2325
2326 /* 2. If node is an li, dd or dt element, then pop all
2327 the nodes from the current node up to node, including
2328 node, then stop this algorithm. */
2329 if ($token['name'] === $node->tagName || ($token['name'] !== 'li'
2330 && ($node->tagName === 'dd' || $node->tagName === 'dt'))
2331 ) {
2332 for ($x = $stack_length; $x >= $n; $x--) {
2333 array_pop($this->stack);
2334 }
2335
2336 break;
2337 }
2338
2339 /* 3. If node is not in the formatting category, and is
2340 not in the phrasing category, and is not an address or
2341 div element, then stop this algorithm. */
2342 if ($cat !== self::FORMATTING && $cat !== self::PHRASING &&
2343 $node->tagName !== 'address' && $node->tagName !== 'div'
2344 ) {
2345 break;
2346 }
2347 }
2348
2349 /* Finally, insert an HTML element with the same tag
2350 name as the token's. */
2351 $this->insertElement($token);
2352 break;
2353
2354 /* A start tag token whose tag name is "plaintext" */
2355 case 'plaintext':
2356 /* If the stack of open elements has a p element in scope,
2357 then act as if an end tag with the tag name p had been
2358 seen. */
2359 if ($this->elementInScope('p')) {
2360 $this->emitToken(
2361 array(
2362 'name' => 'p',
2363 'type' => HTML5::ENDTAG
2364 )
2365 );
2366 }
2367
2368 /* Insert an HTML element for the token. */
2369 $this->insertElement($token);
2370
2371 return HTML5::PLAINTEXT;
2372 break;
2373
2374 /* A start tag whose tag name is one of: "h1", "h2", "h3", "h4",
2375 "h5", "h6" */
2376 case 'h1':
2377 case 'h2':
2378 case 'h3':
2379 case 'h4':
2380 case 'h5':
2381 case 'h6':
2382 /* If the stack of open elements has a p element in scope,
2383 then act as if an end tag with the tag name p had been seen. */
2384 if ($this->elementInScope('p')) {
2385 $this->emitToken(
2386 array(
2387 'name' => 'p',
2388 'type' => HTML5::ENDTAG
2389 )
2390 );
2391 }
2392
2393 /* If the stack of open elements has in scope an element whose
2394 tag name is one of "h1", "h2", "h3", "h4", "h5", or "h6", then
2395 this is a parse error; pop elements from the stack until an
2396 element with one of those tag names has been popped from the
2397 stack. */
2398 while ($this->elementInScope(array('h1', 'h2', 'h3', 'h4', 'h5', 'h6'))) {
2399 array_pop($this->stack);
2400 }
2401
2402 /* Insert an HTML element for the token. */
2403 $this->insertElement($token);
2404 break;
2405
2406 /* A start tag whose tag name is "a" */
2407 case 'a':
2408 /* If the list of active formatting elements contains
2409 an element whose tag name is "a" between the end of the
2410 list and the last marker on the list (or the start of
2411 the list if there is no marker on the list), then this
2412 is a parse error; act as if an end tag with the tag name
2413 "a" had been seen, then remove that element from the list
2414 of active formatting elements and the stack of open
2415 elements if the end tag didn't already remove it (it
2416 might not have if the element is not in table scope). */
2417 $leng = count($this->a_formatting);
2418
2419 for ($n = $leng - 1; $n >= 0; $n--) {
2420 if ($this->a_formatting[$n] === self::MARKER) {
2421 break;
2422
2423 } elseif ($this->a_formatting[$n]->nodeName === 'a') {
2424 $this->emitToken(
2425 array(
2426 'name' => 'a',
2427 'type' => HTML5::ENDTAG
2428 )
2429 );
2430 break;
2431 }
2432 }
2433
2434 /* Reconstruct the active formatting elements, if any. */
2435 $this->reconstructActiveFormattingElements();
2436
2437 /* Insert an HTML element for the token. */
2438 $el = $this->insertElement($token);
2439
2440 /* Add that element to the list of active formatting
2441 elements. */
2442 $this->a_formatting[] = $el;
2443 break;
2444
2445 /* A start tag whose tag name is one of: "b", "big", "em", "font",
2446 "i", "nobr", "s", "small", "strike", "strong", "tt", "u" */
2447 case 'b':
2448 case 'big':
2449 case 'em':
2450 case 'font':
2451 case 'i':
2452 case 'nobr':
2453 case 's':
2454 case 'small':
2455 case 'strike':
2456 case 'strong':
2457 case 'tt':
2458 case 'u':
2459 /* Reconstruct the active formatting elements, if any. */
2460 $this->reconstructActiveFormattingElements();
2461
2462 /* Insert an HTML element for the token. */
2463 $el = $this->insertElement($token);
2464
2465 /* Add that element to the list of active formatting
2466 elements. */
2467 $this->a_formatting[] = $el;
2468 break;
2469
2470 /* A start tag token whose tag name is "button" */
2471 case 'button':
2472 /* If the stack of open elements has a button element in scope,
2473 then this is a parse error; act as if an end tag with the tag
2474 name "button" had been seen, then reprocess the token. (We don't
2475 do that. Unnecessary.) */
2476 if ($this->elementInScope('button')) {
2477 $this->inBody(
2478 array(
2479 'name' => 'button',
2480 'type' => HTML5::ENDTAG
2481 )
2482 );
2483 }
2484
2485 /* Reconstruct the active formatting elements, if any. */
2486 $this->reconstructActiveFormattingElements();
2487
2488 /* Insert an HTML element for the token. */
2489 $this->insertElement($token);
2490
2491 /* Insert a marker at the end of the list of active
2492 formatting elements. */
2493 $this->a_formatting[] = self::MARKER;
2494 break;
2495
2496 /* A start tag token whose tag name is one of: "marquee", "object" */
2497 case 'marquee':
2498 case 'object':
2499 /* Reconstruct the active formatting elements, if any. */
2500 $this->reconstructActiveFormattingElements();
2501
2502 /* Insert an HTML element for the token. */
2503 $this->insertElement($token);
2504
2505 /* Insert a marker at the end of the list of active
2506 formatting elements. */
2507 $this->a_formatting[] = self::MARKER;
2508 break;
2509
2510 /* A start tag token whose tag name is "xmp" */
2511 case 'xmp':
2512 /* Reconstruct the active formatting elements, if any. */
2513 $this->reconstructActiveFormattingElements();
2514
2515 /* Insert an HTML element for the token. */
2516 $this->insertElement($token);
2517
2518 /* Switch the content model flag to the CDATA state. */
2519 return HTML5::CDATA;
2520 break;
2521
2522 /* A start tag whose tag name is "table" */
2523 case 'table':
2524 /* If the stack of open elements has a p element in scope,
2525 then act as if an end tag with the tag name p had been seen. */
2526 if ($this->elementInScope('p')) {
2527 $this->emitToken(
2528 array(
2529 'name' => 'p',
2530 'type' => HTML5::ENDTAG
2531 )
2532 );
2533 }
2534
2535 /* Insert an HTML element for the token. */
2536 $this->insertElement($token);
2537
2538 /* Change the insertion mode to "in table". */
2539 $this->mode = self::IN_TABLE;
2540 break;
2541
2542 /* A start tag whose tag name is one of: "area", "basefont",
2543 "bgsound", "br", "embed", "img", "param", "spacer", "wbr" */
2544 case 'area':
2545 case 'basefont':
2546 case 'bgsound':
2547 case 'br':
2548 case 'embed':
2549 case 'img':
2550 case 'param':
2551 case 'spacer':
2552 case 'wbr':
2553 /* Reconstruct the active formatting elements, if any. */
2554 $this->reconstructActiveFormattingElements();
2555
2556 /* Insert an HTML element for the token. */
2557 $this->insertElement($token);
2558
2559 /* Immediately pop the current node off the stack of open elements. */
2560 array_pop($this->stack);
2561 break;
2562
2563 /* A start tag whose tag name is "hr" */
2564 case 'hr':
2565 /* If the stack of open elements has a p element in scope,
2566 then act as if an end tag with the tag name p had been seen. */
2567 if ($this->elementInScope('p')) {
2568 $this->emitToken(
2569 array(
2570 'name' => 'p',
2571 'type' => HTML5::ENDTAG
2572 )
2573 );
2574 }
2575
2576 /* Insert an HTML element for the token. */
2577 $this->insertElement($token);
2578
2579 /* Immediately pop the current node off the stack of open elements. */
2580 array_pop($this->stack);
2581 break;
2582
2583 /* A start tag whose tag name is "image" */
2584 case 'image':
2585 /* Parse error. Change the token's tag name to "img" and
2586 reprocess it. (Don't ask.) */
2587 $token['name'] = 'img';
2588 return $this->inBody($token);
2589 break;
2590
2591 /* A start tag whose tag name is "input" */
2592 case 'input':
2593 /* Reconstruct the active formatting elements, if any. */
2594 $this->reconstructActiveFormattingElements();
2595
2596 /* Insert an input element for the token. */
2597 $element = $this->insertElement($token, false);
2598
2599 /* If the form element pointer is not null, then associate the
2600 input element with the form element pointed to by the form
2601 element pointer. */
2602 $this->form_pointer !== null
2603 ? $this->form_pointer->appendChild($element)
2604 : end($this->stack)->appendChild($element);
2605
2606 /* Pop that input element off the stack of open elements. */
2607 array_pop($this->stack);
2608 break;
2609
2610 /* A start tag whose tag name is "isindex" */
2611 case 'isindex':
2612 /* Parse error. */
2613 // w/e
2614
2615 /* If the form element pointer is not null,
2616 then ignore the token. */
2617 if ($this->form_pointer === null) {
2618 /* Act as if a start tag token with the tag name "form" had
2619 been seen. */
2620 $this->inBody(
2621 array(
2622 'name' => 'body',
2623 'type' => HTML5::STARTTAG,
2624 'attr' => array()
2625 )
2626 );
2627
2628 /* Act as if a start tag token with the tag name "hr" had
2629 been seen. */
2630 $this->inBody(
2631 array(
2632 'name' => 'hr',
2633 'type' => HTML5::STARTTAG,
2634 'attr' => array()
2635 )
2636 );
2637
2638 /* Act as if a start tag token with the tag name "p" had
2639 been seen. */
2640 $this->inBody(
2641 array(
2642 'name' => 'p',
2643 'type' => HTML5::STARTTAG,
2644 'attr' => array()
2645 )
2646 );
2647
2648 /* Act as if a start tag token with the tag name "label"
2649 had been seen. */
2650 $this->inBody(
2651 array(
2652 'name' => 'label',
2653 'type' => HTML5::STARTTAG,
2654 'attr' => array()
2655 )
2656 );
2657
2658 /* Act as if a stream of character tokens had been seen. */
2659 $this->insertText(
2660 'This is a searchable index. ' .
2661 'Insert your search keywords here: '
2662 );
2663
2664 /* Act as if a start tag token with the tag name "input"
2665 had been seen, with all the attributes from the "isindex"
2666 token, except with the "name" attribute set to the value
2667 "isindex" (ignoring any explicit "name" attribute). */
2668 $attr = $token['attr'];
2669 $attr[] = array('name' => 'name', 'value' => 'isindex');
2670
2671 $this->inBody(
2672 array(
2673 'name' => 'input',
2674 'type' => HTML5::STARTTAG,
2675 'attr' => $attr
2676 )
2677 );
2678
2679 /* Act as if a stream of character tokens had been seen
2680 (see below for what they should say). */
2681 $this->insertText(
2682 'This is a searchable index. ' .
2683 'Insert your search keywords here: '
2684 );
2685
2686 /* Act as if an end tag token with the tag name "label"
2687 had been seen. */
2688 $this->inBody(
2689 array(
2690 'name' => 'label',
2691 'type' => HTML5::ENDTAG
2692 )
2693 );
2694
2695 /* Act as if an end tag token with the tag name "p" had
2696 been seen. */
2697 $this->inBody(
2698 array(
2699 'name' => 'p',
2700 'type' => HTML5::ENDTAG
2701 )
2702 );
2703
2704 /* Act as if a start tag token with the tag name "hr" had
2705 been seen. */
2706 $this->inBody(
2707 array(
2708 'name' => 'hr',
2709 'type' => HTML5::ENDTAG
2710 )
2711 );
2712
2713 /* Act as if an end tag token with the tag name "form" had
2714 been seen. */
2715 $this->inBody(
2716 array(
2717 'name' => 'form',
2718 'type' => HTML5::ENDTAG
2719 )
2720 );
2721 }
2722 break;
2723
2724 /* A start tag whose tag name is "textarea" */
2725 case 'textarea':
2726 $this->insertElement($token);
2727
2728 /* Switch the tokeniser's content model flag to the
2729 RCDATA state. */
2730 return HTML5::RCDATA;
2731 break;
2732
2733 /* A start tag whose tag name is one of: "iframe", "noembed",
2734 "noframes" */
2735 case 'iframe':
2736 case 'noembed':
2737 case 'noframes':
2738 $this->insertElement($token);
2739
2740 /* Switch the tokeniser's content model flag to the CDATA state. */
2741 return HTML5::CDATA;
2742 break;
2743
2744 /* A start tag whose tag name is "select" */
2745 case 'select':
2746 /* Reconstruct the active formatting elements, if any. */
2747 $this->reconstructActiveFormattingElements();
2748
2749 /* Insert an HTML element for the token. */
2750 $this->insertElement($token);
2751
2752 /* Change the insertion mode to "in select". */
2753 $this->mode = self::IN_SELECT;
2754 break;
2755
2756 /* A start or end tag whose tag name is one of: "caption", "col",
2757 "colgroup", "frame", "frameset", "head", "option", "optgroup",
2758 "tbody", "td", "tfoot", "th", "thead", "tr". */
2759 case 'caption':
2760 case 'col':
2761 case 'colgroup':
2762 case 'frame':
2763 case 'frameset':
2764 case 'head':
2765 case 'option':
2766 case 'optgroup':
2767 case 'tbody':
2768 case 'td':
2769 case 'tfoot':
2770 case 'th':
2771 case 'thead':
2772 case 'tr':
2773 // Parse error. Ignore the token.
2774 break;
2775
2776 /* A start or end tag whose tag name is one of: "event-source",
2777 "section", "nav", "article", "aside", "header", "footer",
2778 "datagrid", "command" */
2779 case 'event-source':
2780 case 'section':
2781 case 'nav':
2782 case 'article':
2783 case 'aside':
2784 case 'header':
2785 case 'footer':
2786 case 'datagrid':
2787 case 'command':
2788 // Work in progress!
2789 break;
2790
2791 /* A start tag token not covered by the previous entries */
2792 default:
2793 /* Reconstruct the active formatting elements, if any. */
2794 $this->reconstructActiveFormattingElements();
2795
2796 $this->insertElement($token, true, true);
2797 break;
2798 }
2799 break;
2800
2801 case HTML5::ENDTAG:
2802 switch ($token['name']) {
2803 /* An end tag with the tag name "body" */
2804 case 'body':
2805 /* If the second element in the stack of open elements is
2806 not a body element, this is a parse error. Ignore the token.
2807 (innerHTML case) */
2808 if (count($this->stack) < 2 || $this->stack[1]->nodeName !== 'body') {
2809 // Ignore.
2810
2811 /* If the current node is not the body element, then this
2812 is a parse error. */
2813 } elseif (end($this->stack)->nodeName !== 'body') {
2814 // Parse error.
2815 }
2816
2817 /* Change the insertion mode to "after body". */
2818 $this->mode = self::AFTER_BODY;
2819 break;
2820
2821 /* An end tag with the tag name "html" */
2822 case 'html':
2823 /* Act as if an end tag with tag name "body" had been seen,
2824 then, if that token wasn't ignored, reprocess the current
2825 token. */
2826 $this->inBody(
2827 array(
2828 'name' => 'body',
2829 'type' => HTML5::ENDTAG
2830 )
2831 );
2832
2833 return $this->afterBody($token);
2834 break;
2835
2836 /* An end tag whose tag name is one of: "address", "blockquote",
2837 "center", "dir", "div", "dl", "fieldset", "listing", "menu",
2838 "ol", "pre", "ul" */
2839 case 'address':
2840 case 'blockquote':
2841 case 'center':
2842 case 'dir':
2843 case 'div':
2844 case 'dl':
2845 case 'fieldset':
2846 case 'listing':
2847 case 'menu':
2848 case 'ol':
2849 case 'pre':
2850 case 'ul':
2851 /* If the stack of open elements has an element in scope
2852 with the same tag name as that of the token, then generate
2853 implied end tags. */
2854 if ($this->elementInScope($token['name'])) {
2855 $this->generateImpliedEndTags();
2856
2857 /* Now, if the current node is not an element with
2858 the same tag name as that of the token, then this
2859 is a parse error. */
2860 // w/e
2861
2862 /* If the stack of open elements has an element in
2863 scope with the same tag name as that of the token,
2864 then pop elements from this stack until an element
2865 with that tag name has been popped from the stack. */
2866 for ($n = count($this->stack) - 1; $n >= 0; $n--) {
2867 if ($this->stack[$n]->nodeName === $token['name']) {
2868 $n = -1;
2869 }
2870
2871 array_pop($this->stack);
2872 }
2873 }
2874 break;
2875
2876 /* An end tag whose tag name is "form" */
2877 case 'form':
2878 /* If the stack of open elements has an element in scope
2879 with the same tag name as that of the token, then generate
2880 implied end tags. */
2881 if ($this->elementInScope($token['name'])) {
2882 $this->generateImpliedEndTags();
2883
2884 }
2885
2886 if (end($this->stack)->nodeName !== $token['name']) {
2887 /* Now, if the current node is not an element with the
2888 same tag name as that of the token, then this is a parse
2889 error. */
2890 // w/e
2891
2892 } else {
2893 /* Otherwise, if the current node is an element with
2894 the same tag name as that of the token pop that element
2895 from the stack. */
2896 array_pop($this->stack);
2897 }
2898
2899 /* In any case, set the form element pointer to null. */
2900 $this->form_pointer = null;
2901 break;
2902
2903 /* An end tag whose tag name is "p" */
2904 case 'p':
2905 /* If the stack of open elements has a p element in scope,
2906 then generate implied end tags, except for p elements. */
2907 if ($this->elementInScope('p')) {
2908 $this->generateImpliedEndTags(array('p'));
2909
2910 /* If the current node is not a p element, then this is
2911 a parse error. */
2912 // k
2913
2914 /* If the stack of open elements has a p element in
2915 scope, then pop elements from this stack until the stack
2916 no longer has a p element in scope. */
2917 for ($n = count($this->stack) - 1; $n >= 0; $n--) {
2918 if ($this->elementInScope('p')) {
2919 array_pop($this->stack);
2920
2921 } else {
2922 break;
2923 }
2924 }
2925 }
2926 break;
2927
2928 /* An end tag whose tag name is "dd", "dt", or "li" */
2929 case 'dd':
2930 case 'dt':
2931 case 'li':
2932 /* If the stack of open elements has an element in scope
2933 whose tag name matches the tag name of the token, then
2934 generate implied end tags, except for elements with the
2935 same tag name as the token. */
2936 if ($this->elementInScope($token['name'])) {
2937 $this->generateImpliedEndTags(array($token['name']));
2938
2939 /* If the current node is not an element with the same
2940 tag name as the token, then this is a parse error. */
2941 // w/e
2942
2943 /* If the stack of open elements has an element in scope
2944 whose tag name matches the tag name of the token, then
2945 pop elements from this stack until an element with that
2946 tag name has been popped from the stack. */
2947 for ($n = count($this->stack) - 1; $n >= 0; $n--) {
2948 if ($this->stack[$n]->nodeName === $token['name']) {
2949 $n = -1;
2950 }
2951
2952 array_pop($this->stack);
2953 }
2954 }
2955 break;
2956
2957 /* An end tag whose tag name is one of: "h1", "h2", "h3", "h4",
2958 "h5", "h6" */
2959 case 'h1':
2960 case 'h2':
2961 case 'h3':
2962 case 'h4':
2963 case 'h5':
2964 case 'h6':
2965 $elements = array('h1', 'h2', 'h3', 'h4', 'h5', 'h6');
2966
2967 /* If the stack of open elements has in scope an element whose
2968 tag name is one of "h1", "h2", "h3", "h4", "h5", or "h6", then
2969 generate implied end tags. */
2970 if ($this->elementInScope($elements)) {
2971 $this->generateImpliedEndTags();
2972
2973 /* Now, if the current node is not an element with the same
2974 tag name as that of the token, then this is a parse error. */
2975 // w/e
2976
2977 /* If the stack of open elements has in scope an element
2978 whose tag name is one of "h1", "h2", "h3", "h4", "h5", or
2979 "h6", then pop elements from the stack until an element
2980 with one of those tag names has been popped from the stack. */
2981 while ($this->elementInScope($elements)) {
2982 array_pop($this->stack);
2983 }
2984 }
2985 break;
2986
2987 /* An end tag whose tag name is one of: "a", "b", "big", "em",
2988 "font", "i", "nobr", "s", "small", "strike", "strong", "tt", "u" */
2989 case 'a':
2990 case 'b':
2991 case 'big':
2992 case 'em':
2993 case 'font':
2994 case 'i':
2995 case 'nobr':
2996 case 's':
2997 case 'small':
2998 case 'strike':
2999 case 'strong':
3000 case 'tt':
3001 case 'u':
3002 /* 1. Let the formatting element be the last element in
3003 the list of active formatting elements that:
3004 * is between the end of the list and the last scope
3005 marker in the list, if any, or the start of the list
3006 otherwise, and
3007 * has the same tag name as the token.
3008 */
3009 while (true) {
3010 for ($a = count($this->a_formatting) - 1; $a >= 0; $a--) {
3011 if ($this->a_formatting[$a] === self::MARKER) {
3012 break;
3013
3014 } elseif ($this->a_formatting[$a]->tagName === $token['name']) {
3015 $formatting_element = $this->a_formatting[$a];
3016 $in_stack = in_array($formatting_element, $this->stack, true);
3017 $fe_af_pos = $a;
3018 break;
3019 }
3020 }
3021
3022 /* If there is no such node, or, if that node is
3023 also in the stack of open elements but the element
3024 is not in scope, then this is a parse error. Abort
3025 these steps. The token is ignored. */
3026 if (!isset($formatting_element) || ($in_stack &&
3027 !$this->elementInScope($token['name']))
3028 ) {
3029 break;
3030
3031 /* Otherwise, if there is such a node, but that node
3032 is not in the stack of open elements, then this is a
3033 parse error; remove the element from the list, and
3034 abort these steps. */
3035 } elseif (isset($formatting_element) && !$in_stack) {
3036 unset($this->a_formatting[$fe_af_pos]);
3037 $this->a_formatting = array_merge($this->a_formatting);
3038 break;
3039 }
3040
3041 /* 2. Let the furthest block be the topmost node in the
3042 stack of open elements that is lower in the stack
3043 than the formatting element, and is not an element in
3044 the phrasing or formatting categories. There might
3045 not be one. */
3046 $fe_s_pos = array_search($formatting_element, $this->stack, true);
3047 $length = count($this->stack);
3048
3049 for ($s = $fe_s_pos + 1; $s < $length; $s++) {
3050 $category = $this->getElementCategory($this->stack[$s]->nodeName);
3051
3052 if ($category !== self::PHRASING && $category !== self::FORMATTING) {
3053 $furthest_block = $this->stack[$s];
3054 }
3055 }
3056
3057 /* 3. If there is no furthest block, then the UA must
3058 skip the subsequent steps and instead just pop all
3059 the nodes from the bottom of the stack of open
3060 elements, from the current node up to the formatting
3061 element, and remove the formatting element from the
3062 list of active formatting elements. */
3063 if (!isset($furthest_block)) {
3064 for ($n = $length - 1; $n >= $fe_s_pos; $n--) {
3065 array_pop($this->stack);
3066 }
3067
3068 unset($this->a_formatting[$fe_af_pos]);
3069 $this->a_formatting = array_merge($this->a_formatting);
3070 break;
3071 }
3072
3073 /* 4. Let the common ancestor be the element
3074 immediately above the formatting element in the stack
3075 of open elements. */
3076 $common_ancestor = $this->stack[$fe_s_pos - 1];
3077
3078 /* 5. If the furthest block has a parent node, then
3079 remove the furthest block from its parent node. */
3080 if ($furthest_block->parentNode !== null) {
3081 $furthest_block->parentNode->removeChild($furthest_block);
3082 }
3083
3084 /* 6. Let a bookmark note the position of the
3085 formatting element in the list of active formatting
3086 elements relative to the elements on either side
3087 of it in the list. */
3088 $bookmark = $fe_af_pos;
3089
3090 /* 7. Let node and last node be the furthest block.
3091 Follow these steps: */
3092 $node = $furthest_block;
3093 $last_node = $furthest_block;
3094
3095 while (true) {
3096 for ($n = array_search($node, $this->stack, true) - 1; $n >= 0; $n--) {
3097 /* 7.1 Let node be the element immediately
3098 prior to node in the stack of open elements. */
3099 $node = $this->stack[$n];
3100
3101 /* 7.2 If node is not in the list of active
3102 formatting elements, then remove node from
3103 the stack of open elements and then go back
3104 to step 1. */
3105 if (!in_array($node, $this->a_formatting, true)) {
3106 unset($this->stack[$n]);
3107 $this->stack = array_merge($this->stack);
3108
3109 } else {
3110 break;
3111 }
3112 }
3113
3114 /* 7.3 Otherwise, if node is the formatting
3115 element, then go to the next step in the overall
3116 algorithm. */
3117 if ($node === $formatting_element) {
3118 break;
3119
3120 /* 7.4 Otherwise, if last node is the furthest
3121 block, then move the aforementioned bookmark to
3122 be immediately after the node in the list of
3123 active formatting elements. */
3124 } elseif ($last_node === $furthest_block) {
3125 $bookmark = array_search($node, $this->a_formatting, true) + 1;
3126 }
3127
3128 /* 7.5 If node has any children, perform a
3129 shallow clone of node, replace the entry for
3130 node in the list of active formatting elements
3131 with an entry for the clone, replace the entry
3132 for node in the stack of open elements with an
3133 entry for the clone, and let node be the clone. */
3134 if ($node->hasChildNodes()) {
3135 $clone = $node->cloneNode();
3136 $s_pos = array_search($node, $this->stack, true);
3137 $a_pos = array_search($node, $this->a_formatting, true);
3138
3139 $this->stack[$s_pos] = $clone;
3140 $this->a_formatting[$a_pos] = $clone;
3141 $node = $clone;
3142 }
3143
3144 /* 7.6 Insert last node into node, first removing
3145 it from its previous parent node if any. */
3146 if ($last_node->parentNode !== null) {
3147 $last_node->parentNode->removeChild($last_node);
3148 }
3149
3150 $node->appendChild($last_node);
3151
3152 /* 7.7 Let last node be node. */
3153 $last_node = $node;
3154 }
3155
3156 /* 8. Insert whatever last node ended up being in
3157 the previous step into the common ancestor node,
3158 first removing it from its previous parent node if
3159 any. */
3160 if ($last_node->parentNode !== null) {
3161 $last_node->parentNode->removeChild($last_node);
3162 }
3163
3164 $common_ancestor->appendChild($last_node);
3165
3166 /* 9. Perform a shallow clone of the formatting
3167 element. */
3168 $clone = $formatting_element->cloneNode();
3169
3170 /* 10. Take all of the child nodes of the furthest
3171 block and append them to the clone created in the
3172 last step. */
3173 while ($furthest_block->hasChildNodes()) {
3174 $child = $furthest_block->firstChild;
3175 $furthest_block->removeChild($child);
3176 $clone->appendChild($child);
3177 }
3178
3179 /* 11. Append that clone to the furthest block. */
3180 $furthest_block->appendChild($clone);
3181
3182 /* 12. Remove the formatting element from the list
3183 of active formatting elements, and insert the clone
3184 into the list of active formatting elements at the
3185 position of the aforementioned bookmark. */
3186 $fe_af_pos = array_search($formatting_element, $this->a_formatting, true);
3187 unset($this->a_formatting[$fe_af_pos]);
3188 $this->a_formatting = array_merge($this->a_formatting);
3189
3190 $af_part1 = array_slice($this->a_formatting, 0, $bookmark - 1);
3191 $af_part2 = array_slice($this->a_formatting, $bookmark, count($this->a_formatting));
3192 $this->a_formatting = array_merge($af_part1, array($clone), $af_part2);
3193
3194 /* 13. Remove the formatting element from the stack
3195 of open elements, and insert the clone into the stack
3196 of open elements immediately after (i.e. in a more
3197 deeply nested position than) the position of the
3198 furthest block in that stack. */
3199 $fe_s_pos = array_search($formatting_element, $this->stack, true);
3200 $fb_s_pos = array_search($furthest_block, $this->stack, true);
3201 unset($this->stack[$fe_s_pos]);
3202
3203 $s_part1 = array_slice($this->stack, 0, $fb_s_pos);
3204 $s_part2 = array_slice($this->stack, $fb_s_pos + 1, count($this->stack));
3205 $this->stack = array_merge($s_part1, array($clone), $s_part2);
3206
3207 /* 14. Jump back to step 1 in this series of steps. */
3208 unset($formatting_element, $fe_af_pos, $fe_s_pos, $furthest_block);
3209 }
3210 break;
3211
3212 /* An end tag token whose tag name is one of: "button",
3213 "marquee", "object" */
3214 case 'button':
3215 case 'marquee':
3216 case 'object':
3217 /* If the stack of open elements has an element in scope whose
3218 tag name matches the tag name of the token, then generate implied
3219 tags. */
3220 if ($this->elementInScope($token['name'])) {
3221 $this->generateImpliedEndTags();
3222
3223 /* Now, if the current node is not an element with the same
3224 tag name as the token, then this is a parse error. */
3225 // k
3226
3227 /* Now, if the stack of open elements has an element in scope
3228 whose tag name matches the tag name of the token, then pop
3229 elements from the stack until that element has been popped from
3230 the stack, and clear the list of active formatting elements up
3231 to the last marker. */
3232 for ($n = count($this->stack) - 1; $n >= 0; $n--) {
3233 if ($this->stack[$n]->nodeName === $token['name']) {
3234 $n = -1;
3235 }
3236
3237 array_pop($this->stack);
3238 }
3239
3240 $marker = end(array_keys($this->a_formatting, self::MARKER, true));
3241
3242 for ($n = count($this->a_formatting) - 1; $n > $marker; $n--) {
3243 array_pop($this->a_formatting);
3244 }
3245 }
3246 break;
3247
3248 /* Or an end tag whose tag name is one of: "area", "basefont",
3249 "bgsound", "br", "embed", "hr", "iframe", "image", "img",
3250 "input", "isindex", "noembed", "noframes", "param", "select",
3251 "spacer", "table", "textarea", "wbr" */
3252 case 'area':
3253 case 'basefont':
3254 case 'bgsound':
3255 case 'br':
3256 case 'embed':
3257 case 'hr':
3258 case 'iframe':
3259 case 'image':
3260 case 'img':
3261 case 'input':
3262 case 'isindex':
3263 case 'noembed':
3264 case 'noframes':
3265 case 'param':
3266 case 'select':
3267 case 'spacer':
3268 case 'table':
3269 case 'textarea':
3270 case 'wbr':
3271 // Parse error. Ignore the token.
3272 break;
3273
3274 /* An end tag token not covered by the previous entries */
3275 default:
3276 for ($n = count($this->stack) - 1; $n >= 0; $n--) {
3277 /* Initialise node to be the current node (the bottommost
3278 node of the stack). */
3279 $node = end($this->stack);
3280
3281 /* If node has the same tag name as the end tag token,
3282 then: */
3283 if ($token['name'] === $node->nodeName) {
3284 /* Generate implied end tags. */
3285 $this->generateImpliedEndTags();
3286
3287 /* If the tag name of the end tag token does not
3288 match the tag name of the current node, this is a
3289 parse error. */
3290 // k
3291
3292 /* Pop all the nodes from the current node up to
3293 node, including node, then stop this algorithm. */
3294 for ($x = count($this->stack) - $n; $x >= $n; $x--) {
3295 array_pop($this->stack);
3296 }
3297
3298 } else {
3299 $category = $this->getElementCategory($node);
3300
3301 if ($category !== self::SPECIAL && $category !== self::SCOPING) {
3302 /* Otherwise, if node is in neither the formatting
3303 category nor the phrasing category, then this is a
3304 parse error. Stop this algorithm. The end tag token
3305 is ignored. */
3306 return false;
3307 }
3308 }
3309 }
3310 break;
3311 }
3312 break;
3313 }
3314 }
3315
3316 private function inTable($token)
3317 {
3318 $clear = array('html', 'table');
3319
3320 /* A character token that is one of one of U+0009 CHARACTER TABULATION,
3321 U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
3322 or U+0020 SPACE */
3323 if ($token['type'] === HTML5::CHARACTR &&
3324 preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])
3325 ) {
3326 /* Append the character to the current node. */
3327 $text = $this->dom->createTextNode($token['data']);
3328 end($this->stack)->appendChild($text);
3329
3330 /* A comment token */
3331 } elseif ($token['type'] === HTML5::COMMENT) {
3332 /* Append a Comment node to the current node with the data
3333 attribute set to the data given in the comment token. */
3334 $comment = $this->dom->createComment($token['data']);
3335 end($this->stack)->appendChild($comment);
3336
3337 /* A start tag whose tag name is "caption" */
3338 } elseif ($token['type'] === HTML5::STARTTAG &&
3339 $token['name'] === 'caption'
3340 ) {
3341 /* Clear the stack back to a table context. */
3342 $this->clearStackToTableContext($clear);
3343
3344 /* Insert a marker at the end of the list of active
3345 formatting elements. */
3346 $this->a_formatting[] = self::MARKER;
3347
3348 /* Insert an HTML element for the token, then switch the
3349 insertion mode to "in caption". */
3350 $this->insertElement($token);
3351 $this->mode = self::IN_CAPTION;
3352
3353 /* A start tag whose tag name is "colgroup" */
3354 } elseif ($token['type'] === HTML5::STARTTAG &&
3355 $token['name'] === 'colgroup'
3356 ) {
3357 /* Clear the stack back to a table context. */
3358 $this->clearStackToTableContext($clear);
3359
3360 /* Insert an HTML element for the token, then switch the
3361 insertion mode to "in column group". */
3362 $this->insertElement($token);
3363 $this->mode = self::IN_CGROUP;
3364
3365 /* A start tag whose tag name is "col" */
3366 } elseif ($token['type'] === HTML5::STARTTAG &&
3367 $token['name'] === 'col'
3368 ) {
3369 $this->inTable(
3370 array(
3371 'name' => 'colgroup',
3372 'type' => HTML5::STARTTAG,
3373 'attr' => array()
3374 )
3375 );
3376
3377 $this->inColumnGroup($token);
3378
3379 /* A start tag whose tag name is one of: "tbody", "tfoot", "thead" */
3380 } elseif ($token['type'] === HTML5::STARTTAG && in_array(
3381 $token['name'],
3382 array('tbody', 'tfoot', 'thead')
3383 )
3384 ) {
3385 /* Clear the stack back to a table context. */
3386 $this->clearStackToTableContext($clear);
3387
3388 /* Insert an HTML element for the token, then switch the insertion
3389 mode to "in table body". */
3390 $this->insertElement($token);
3391 $this->mode = self::IN_TBODY;
3392
3393 /* A start tag whose tag name is one of: "td", "th", "tr" */
3394 } elseif ($token['type'] === HTML5::STARTTAG &&
3395 in_array($token['name'], array('td', 'th', 'tr'))
3396 ) {
3397 /* Act as if a start tag token with the tag name "tbody" had been
3398 seen, then reprocess the current token. */
3399 $this->inTable(
3400 array(
3401 'name' => 'tbody',
3402 'type' => HTML5::STARTTAG,
3403 'attr' => array()
3404 )
3405 );
3406
3407 return $this->inTableBody($token);
3408
3409 /* A start tag whose tag name is "table" */
3410 } elseif ($token['type'] === HTML5::STARTTAG &&
3411 $token['name'] === 'table'
3412 ) {
3413 /* Parse error. Act as if an end tag token with the tag name "table"
3414 had been seen, then, if that token wasn't ignored, reprocess the
3415 current token. */
3416 $this->inTable(
3417 array(
3418 'name' => 'table',
3419 'type' => HTML5::ENDTAG
3420 )
3421 );
3422
3423 return $this->mainPhase($token);
3424
3425 /* An end tag whose tag name is "table" */
3426 } elseif ($token['type'] === HTML5::ENDTAG &&
3427 $token['name'] === 'table'
3428 ) {
3429 /* If the stack of open elements does not have an element in table
3430 scope with the same tag name as the token, this is a parse error.
3431 Ignore the token. (innerHTML case) */
3432 if (!$this->elementInScope($token['name'], true)) {
3433 return false;
3434
3435 /* Otherwise: */
3436 } else {
3437 /* Generate implied end tags. */
3438 $this->generateImpliedEndTags();
3439
3440 /* Now, if the current node is not a table element, then this
3441 is a parse error. */
3442 // w/e
3443
3444 /* Pop elements from this stack until a table element has been
3445 popped from the stack. */
3446 while (true) {
3447 $current = end($this->stack)->nodeName;
3448 array_pop($this->stack);
3449
3450 if ($current === 'table') {
3451 break;
3452 }
3453 }
3454
3455 /* Reset the insertion mode appropriately. */
3456 $this->resetInsertionMode();
3457 }
3458
3459 /* An end tag whose tag name is one of: "body", "caption", "col",
3460 "colgroup", "html", "tbody", "td", "tfoot", "th", "thead", "tr" */
3461 } elseif ($token['type'] === HTML5::ENDTAG && in_array(
3462 $token['name'],
3463 array(
3464 'body',
3465 'caption',
3466 'col',
3467 'colgroup',
3468 'html',
3469 'tbody',
3470 'td',
3471 'tfoot',
3472 'th',
3473 'thead',
3474 'tr'
3475 )
3476 )
3477 ) {
3478 // Parse error. Ignore the token.
3479
3480 /* Anything else */
3481 } else {
3482 /* Parse error. Process the token as if the insertion mode was "in
3483 body", with the following exception: */
3484
3485 /* If the current node is a table, tbody, tfoot, thead, or tr
3486 element, then, whenever a node would be inserted into the current
3487 node, it must instead be inserted into the foster parent element. */
3488 if (in_array(
3489 end($this->stack)->nodeName,
3490 array('table', 'tbody', 'tfoot', 'thead', 'tr')
3491 )
3492 ) {
3493 /* The foster parent element is the parent element of the last
3494 table element in the stack of open elements, if there is a
3495 table element and it has such a parent element. If there is no
3496 table element in the stack of open elements (innerHTML case),
3497 then the foster parent element is the first element in the
3498 stack of open elements (the html element). Otherwise, if there
3499 is a table element in the stack of open elements, but the last
3500 table element in the stack of open elements has no parent, or
3501 its parent node is not an element, then the foster parent
3502 element is the element before the last table element in the
3503 stack of open elements. */
3504 for ($n = count($this->stack) - 1; $n >= 0; $n--) {
3505 if ($this->stack[$n]->nodeName === 'table') {
3506 $table = $this->stack[$n];
3507 break;
3508 }
3509 }
3510
3511 if (isset($table) && $table->parentNode !== null) {
3512 $this->foster_parent = $table->parentNode;
3513
3514 } elseif (!isset($table)) {
3515 $this->foster_parent = $this->stack[0];
3516
3517 } elseif (isset($table) && ($table->parentNode === null ||
3518 $table->parentNode->nodeType !== XML_ELEMENT_NODE)
3519 ) {
3520 $this->foster_parent = $this->stack[$n - 1];
3521 }
3522 }
3523
3524 $this->inBody($token);
3525 }
3526 }
3527
3528 private function inCaption($token)
3529 {
3530 /* An end tag whose tag name is "caption" */
3531 if ($token['type'] === HTML5::ENDTAG && $token['name'] === 'caption') {
3532 /* If the stack of open elements does not have an element in table
3533 scope with the same tag name as the token, this is a parse error.
3534 Ignore the token. (innerHTML case) */
3535 if (!$this->elementInScope($token['name'], true)) {
3536 // Ignore
3537
3538 /* Otherwise: */
3539 } else {
3540 /* Generate implied end tags. */
3541 $this->generateImpliedEndTags();
3542
3543 /* Now, if the current node is not a caption element, then this
3544 is a parse error. */
3545 // w/e
3546
3547 /* Pop elements from this stack until a caption element has
3548 been popped from the stack. */
3549 while (true) {
3550 $node = end($this->stack)->nodeName;
3551 array_pop($this->stack);
3552
3553 if ($node === 'caption') {
3554 break;
3555 }
3556 }
3557
3558 /* Clear the list of active formatting elements up to the last
3559 marker. */
3560 $this->clearTheActiveFormattingElementsUpToTheLastMarker();
3561
3562 /* Switch the insertion mode to "in table". */
3563 $this->mode = self::IN_TABLE;
3564 }
3565
3566 /* A start tag whose tag name is one of: "caption", "col", "colgroup",
3567 "tbody", "td", "tfoot", "th", "thead", "tr", or an end tag whose tag
3568 name is "table" */
3569 } elseif (($token['type'] === HTML5::STARTTAG && in_array(
3570 $token['name'],
3571 array(
3572 'caption',
3573 'col',
3574 'colgroup',
3575 'tbody',
3576 'td',
3577 'tfoot',
3578 'th',
3579 'thead',
3580 'tr'
3581 )
3582 )) || ($token['type'] === HTML5::ENDTAG &&
3583 $token['name'] === 'table')
3584 ) {
3585 /* Parse error. Act as if an end tag with the tag name "caption"
3586 had been seen, then, if that token wasn't ignored, reprocess the
3587 current token. */
3588 $this->inCaption(
3589 array(
3590 'name' => 'caption',
3591 'type' => HTML5::ENDTAG
3592 )
3593 );
3594
3595 return $this->inTable($token);
3596
3597 /* An end tag whose tag name is one of: "body", "col", "colgroup",
3598 "html", "tbody", "td", "tfoot", "th", "thead", "tr" */
3599 } elseif ($token['type'] === HTML5::ENDTAG && in_array(
3600 $token['name'],
3601 array(
3602 'body',
3603 'col',
3604 'colgroup',
3605 'html',
3606 'tbody',
3607 'tfoot',
3608 'th',
3609 'thead',
3610 'tr'
3611 )
3612 )
3613 ) {
3614 // Parse error. Ignore the token.
3615
3616 /* Anything else */
3617 } else {
3618 /* Process the token as if the insertion mode was "in body". */
3619 $this->inBody($token);
3620 }
3621 }
3622
3623 private function inColumnGroup($token)
3624 {
3625 /* A character token that is one of one of U+0009 CHARACTER TABULATION,
3626 U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
3627 or U+0020 SPACE */
3628 if ($token['type'] === HTML5::CHARACTR &&
3629 preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])
3630 ) {
3631 /* Append the character to the current node. */
3632 $text = $this->dom->createTextNode($token['data']);
3633 end($this->stack)->appendChild($text);
3634
3635 /* A comment token */
3636 } elseif ($token['type'] === HTML5::COMMENT) {
3637 /* Append a Comment node to the current node with the data
3638 attribute set to the data given in the comment token. */
3639 $comment = $this->dom->createComment($token['data']);
3640 end($this->stack)->appendChild($comment);
3641
3642 /* A start tag whose tag name is "col" */
3643 } elseif ($token['type'] === HTML5::STARTTAG && $token['name'] === 'col') {
3644 /* Insert a col element for the token. Immediately pop the current
3645 node off the stack of open elements. */
3646 $this->insertElement($token);
3647 array_pop($this->stack);
3648
3649 /* An end tag whose tag name is "colgroup" */
3650 } elseif ($token['type'] === HTML5::ENDTAG &&
3651 $token['name'] === 'colgroup'
3652 ) {
3653 /* If the current node is the root html element, then this is a
3654 parse error, ignore the token. (innerHTML case) */
3655 if (end($this->stack)->nodeName === 'html') {
3656 // Ignore
3657
3658 /* Otherwise, pop the current node (which will be a colgroup
3659 element) from the stack of open elements. Switch the insertion
3660 mode to "in table". */
3661 } else {
3662 array_pop($this->stack);
3663 $this->mode = self::IN_TABLE;
3664 }
3665
3666 /* An end tag whose tag name is "col" */
3667 } elseif ($token['type'] === HTML5::ENDTAG && $token['name'] === 'col') {
3668 /* Parse error. Ignore the token. */
3669
3670 /* Anything else */
3671 } else {
3672 /* Act as if an end tag with the tag name "colgroup" had been seen,
3673 and then, if that token wasn't ignored, reprocess the current token. */
3674 $this->inColumnGroup(
3675 array(
3676 'name' => 'colgroup',
3677 'type' => HTML5::ENDTAG
3678 )
3679 );
3680
3681 return $this->inTable($token);
3682 }
3683 }
3684
3685 private function inTableBody($token)
3686 {
3687 $clear = array('tbody', 'tfoot', 'thead', 'html');
3688
3689 /* A start tag whose tag name is "tr" */
3690 if ($token['type'] === HTML5::STARTTAG && $token['name'] === 'tr') {
3691 /* Clear the stack back to a table body context. */
3692 $this->clearStackToTableContext($clear);
3693
3694 /* Insert a tr element for the token, then switch the insertion
3695 mode to "in row". */
3696 $this->insertElement($token);
3697 $this->mode = self::IN_ROW;
3698
3699 /* A start tag whose tag name is one of: "th", "td" */
3700 } elseif ($token['type'] === HTML5::STARTTAG &&
3701 ($token['name'] === 'th' || $token['name'] === 'td')
3702 ) {
3703 /* Parse error. Act as if a start tag with the tag name "tr" had
3704 been seen, then reprocess the current token. */
3705 $this->inTableBody(
3706 array(
3707 'name' => 'tr',
3708 'type' => HTML5::STARTTAG,
3709 'attr' => array()
3710 )
3711 );
3712
3713 return $this->inRow($token);
3714
3715 /* An end tag whose tag name is one of: "tbody", "tfoot", "thead" */
3716 } elseif ($token['type'] === HTML5::ENDTAG &&
3717 in_array($token['name'], array('tbody', 'tfoot', 'thead'))
3718 ) {
3719 /* If the stack of open elements does not have an element in table
3720 scope with the same tag name as the token, this is a parse error.
3721 Ignore the token. */
3722 if (!$this->elementInScope($token['name'], true)) {
3723 // Ignore
3724
3725 /* Otherwise: */
3726 } else {
3727 /* Clear the stack back to a table body context. */
3728 $this->clearStackToTableContext($clear);
3729
3730 /* Pop the current node from the stack of open elements. Switch
3731 the insertion mode to "in table". */
3732 array_pop($this->stack);
3733 $this->mode = self::IN_TABLE;
3734 }
3735
3736 /* A start tag whose tag name is one of: "caption", "col", "colgroup",
3737 "tbody", "tfoot", "thead", or an end tag whose tag name is "table" */
3738 } elseif (($token['type'] === HTML5::STARTTAG && in_array(
3739 $token['name'],
3740 array('caption', 'col', 'colgroup', 'tbody', 'tfoor', 'thead')
3741 )) ||
3742 ($token['type'] === HTML5::STARTTAG && $token['name'] === 'table')
3743 ) {
3744 /* If the stack of open elements does not have a tbody, thead, or
3745 tfoot element in table scope, this is a parse error. Ignore the
3746 token. (innerHTML case) */
3747 if (!$this->elementInScope(array('tbody', 'thead', 'tfoot'), true)) {
3748 // Ignore.
3749
3750 /* Otherwise: */
3751 } else {
3752 /* Clear the stack back to a table body context. */
3753 $this->clearStackToTableContext($clear);
3754
3755 /* Act as if an end tag with the same tag name as the current
3756 node ("tbody", "tfoot", or "thead") had been seen, then
3757 reprocess the current token. */
3758 $this->inTableBody(
3759 array(
3760 'name' => end($this->stack)->nodeName,
3761 'type' => HTML5::ENDTAG
3762 )
3763 );
3764
3765 return $this->mainPhase($token);
3766 }
3767
3768 /* An end tag whose tag name is one of: "body", "caption", "col",
3769 "colgroup", "html", "td", "th", "tr" */
3770 } elseif ($token['type'] === HTML5::ENDTAG && in_array(
3771 $token['name'],
3772 array('body', 'caption', 'col', 'colgroup', 'html', 'td', 'th', 'tr')
3773 )
3774 ) {
3775 /* Parse error. Ignore the token. */
3776
3777 /* Anything else */
3778 } else {
3779 /* Process the token as if the insertion mode was "in table". */
3780 $this->inTable($token);
3781 }
3782 }
3783
3784 private function inRow($token)
3785 {
3786 $clear = array('tr', 'html');
3787
3788 /* A start tag whose tag name is one of: "th", "td" */
3789 if ($token['type'] === HTML5::STARTTAG &&
3790 ($token['name'] === 'th' || $token['name'] === 'td')
3791 ) {
3792 /* Clear the stack back to a table row context. */
3793 $this->clearStackToTableContext($clear);
3794
3795 /* Insert an HTML element for the token, then switch the insertion
3796 mode to "in cell". */
3797 $this->insertElement($token);
3798 $this->mode = self::IN_CELL;
3799
3800 /* Insert a marker at the end of the list of active formatting
3801 elements. */
3802 $this->a_formatting[] = self::MARKER;
3803
3804 /* An end tag whose tag name is "tr" */
3805 } elseif ($token['type'] === HTML5::ENDTAG && $token['name'] === 'tr') {
3806 /* If the stack of open elements does not have an element in table
3807 scope with the same tag name as the token, this is a parse error.
3808 Ignore the token. (innerHTML case) */
3809 if (!$this->elementInScope($token['name'], true)) {
3810 // Ignore.
3811
3812 /* Otherwise: */
3813 } else {
3814 /* Clear the stack back to a table row context. */
3815 $this->clearStackToTableContext($clear);
3816
3817 /* Pop the current node (which will be a tr element) from the
3818 stack of open elements. Switch the insertion mode to "in table
3819 body". */
3820 array_pop($this->stack);
3821 $this->mode = self::IN_TBODY;
3822 }
3823
3824 /* A start tag whose tag name is one of: "caption", "col", "colgroup",
3825 "tbody", "tfoot", "thead", "tr" or an end tag whose tag name is "table" */
3826 } elseif ($token['type'] === HTML5::STARTTAG && in_array(
3827 $token['name'],
3828 array('caption', 'col', 'colgroup', 'tbody', 'tfoot', 'thead', 'tr')
3829 )
3830 ) {
3831 /* Act as if an end tag with the tag name "tr" had been seen, then,
3832 if that token wasn't ignored, reprocess the current token. */
3833 $this->inRow(
3834 array(
3835 'name' => 'tr',
3836 'type' => HTML5::ENDTAG
3837 )
3838 );
3839
3840 return $this->inCell($token);
3841
3842 /* An end tag whose tag name is one of: "tbody", "tfoot", "thead" */
3843 } elseif ($token['type'] === HTML5::ENDTAG &&
3844 in_array($token['name'], array('tbody', 'tfoot', 'thead'))
3845 ) {
3846 /* If the stack of open elements does not have an element in table
3847 scope with the same tag name as the token, this is a parse error.
3848 Ignore the token. */
3849 if (!$this->elementInScope($token['name'], true)) {
3850 // Ignore.
3851
3852 /* Otherwise: */
3853 } else {
3854 /* Otherwise, act as if an end tag with the tag name "tr" had
3855 been seen, then reprocess the current token. */
3856 $this->inRow(
3857 array(
3858 'name' => 'tr',
3859 'type' => HTML5::ENDTAG
3860 )
3861 );
3862
3863 return $this->inCell($token);
3864 }
3865
3866 /* An end tag whose tag name is one of: "body", "caption", "col",
3867 "colgroup", "html", "td", "th" */
3868 } elseif ($token['type'] === HTML5::ENDTAG && in_array(
3869 $token['name'],
3870 array('body', 'caption', 'col', 'colgroup', 'html', 'td', 'th', 'tr')
3871 )
3872 ) {
3873 /* Parse error. Ignore the token. */
3874
3875 /* Anything else */
3876 } else {
3877 /* Process the token as if the insertion mode was "in table". */
3878 $this->inTable($token);
3879 }
3880 }
3881
3882 private function inCell($token)
3883 {
3884 /* An end tag whose tag name is one of: "td", "th" */
3885 if ($token['type'] === HTML5::ENDTAG &&
3886 ($token['name'] === 'td' || $token['name'] === 'th')
3887 ) {
3888 /* If the stack of open elements does not have an element in table
3889 scope with the same tag name as that of the token, then this is a
3890 parse error and the token must be ignored. */
3891 if (!$this->elementInScope($token['name'], true)) {
3892 // Ignore.
3893
3894 /* Otherwise: */
3895 } else {
3896 /* Generate implied end tags, except for elements with the same
3897 tag name as the token. */
3898 $this->generateImpliedEndTags(array($token['name']));
3899
3900 /* Now, if the current node is not an element with the same tag
3901 name as the token, then this is a parse error. */
3902 // k
3903
3904 /* Pop elements from this stack until an element with the same
3905 tag name as the token has been popped from the stack. */
3906 while (true) {
3907 $node = end($this->stack)->nodeName;
3908 array_pop($this->stack);
3909
3910 if ($node === $token['name']) {
3911 break;
3912 }
3913 }
3914
3915 /* Clear the list of active formatting elements up to the last
3916 marker. */
3917 $this->clearTheActiveFormattingElementsUpToTheLastMarker();
3918
3919 /* Switch the insertion mode to "in row". (The current node
3920 will be a tr element at this point.) */
3921 $this->mode = self::IN_ROW;
3922 }
3923
3924 /* A start tag whose tag name is one of: "caption", "col", "colgroup",
3925 "tbody", "td", "tfoot", "th", "thead", "tr" */
3926 } elseif ($token['type'] === HTML5::STARTTAG && in_array(
3927 $token['name'],
3928 array(
3929 'caption',
3930 'col',
3931 'colgroup',
3932 'tbody',
3933 'td',
3934 'tfoot',
3935 'th',
3936 'thead',
3937 'tr'
3938 )
3939 )
3940 ) {
3941 /* If the stack of open elements does not have a td or th element
3942 in table scope, then this is a parse error; ignore the token.
3943 (innerHTML case) */
3944 if (!$this->elementInScope(array('td', 'th'), true)) {
3945 // Ignore.
3946
3947 /* Otherwise, close the cell (see below) and reprocess the current
3948 token. */
3949 } else {
3950 $this->closeCell();
3951 return $this->inRow($token);
3952 }
3953
3954 /* A start tag whose tag name is one of: "caption", "col", "colgroup",
3955 "tbody", "td", "tfoot", "th", "thead", "tr" */
3956 } elseif ($token['type'] === HTML5::STARTTAG && in_array(
3957 $token['name'],
3958 array(
3959 'caption',
3960 'col',
3961 'colgroup',
3962 'tbody',
3963 'td',
3964 'tfoot',
3965 'th',
3966 'thead',
3967 'tr'
3968 )
3969 )
3970 ) {
3971 /* If the stack of open elements does not have a td or th element
3972 in table scope, then this is a parse error; ignore the token.
3973 (innerHTML case) */
3974 if (!$this->elementInScope(array('td', 'th'), true)) {
3975 // Ignore.
3976
3977 /* Otherwise, close the cell (see below) and reprocess the current
3978 token. */
3979 } else {
3980 $this->closeCell();
3981 return $this->inRow($token);
3982 }
3983
3984 /* An end tag whose tag name is one of: "body", "caption", "col",
3985 "colgroup", "html" */
3986 } elseif ($token['type'] === HTML5::ENDTAG && in_array(
3987 $token['name'],
3988 array('body', 'caption', 'col', 'colgroup', 'html')
3989 )
3990 ) {
3991 /* Parse error. Ignore the token. */
3992
3993 /* An end tag whose tag name is one of: "table", "tbody", "tfoot",
3994 "thead", "tr" */
3995 } elseif ($token['type'] === HTML5::ENDTAG && in_array(
3996 $token['name'],
3997 array('table', 'tbody', 'tfoot', 'thead', 'tr')
3998 )
3999 ) {
4000 /* If the stack of open elements does not have an element in table
4001 scope with the same tag name as that of the token (which can only
4002 happen for "tbody", "tfoot" and "thead", or, in the innerHTML case),
4003 then this is a parse error and the token must be ignored. */
4004 if (!$this->elementInScope($token['name'], true)) {
4005 // Ignore.
4006
4007 /* Otherwise, close the cell (see below) and reprocess the current
4008 token. */
4009 } else {
4010 $this->closeCell();
4011 return $this->inRow($token);
4012 }
4013
4014 /* Anything else */
4015 } else {
4016 /* Process the token as if the insertion mode was "in body". */
4017 $this->inBody($token);
4018 }
4019 }
4020
4021 private function inSelect($token)
4022 {
4023 /* Handle the token as follows: */
4024
4025 /* A character token */
4026 if ($token['type'] === HTML5::CHARACTR) {
4027 /* Append the token's character to the current node. */
4028 $this->insertText($token['data']);
4029
4030 /* A comment token */
4031 } elseif ($token['type'] === HTML5::COMMENT) {
4032 /* Append a Comment node to the current node with the data
4033 attribute set to the data given in the comment token. */
4034 $this->insertComment($token['data']);
4035
4036 /* A start tag token whose tag name is "option" */
4037 } elseif ($token['type'] === HTML5::STARTTAG &&
4038 $token['name'] === 'option'
4039 ) {
4040 /* If the current node is an option element, act as if an end tag
4041 with the tag name "option" had been seen. */
4042 if (end($this->stack)->nodeName === 'option') {
4043 $this->inSelect(
4044 array(
4045 'name' => 'option',
4046 'type' => HTML5::ENDTAG
4047 )
4048 );
4049 }
4050
4051 /* Insert an HTML element for the token. */
4052 $this->insertElement($token);
4053
4054 /* A start tag token whose tag name is "optgroup" */
4055 } elseif ($token['type'] === HTML5::STARTTAG &&
4056 $token['name'] === 'optgroup'
4057 ) {
4058 /* If the current node is an option element, act as if an end tag
4059 with the tag name "option" had been seen. */
4060 if (end($this->stack)->nodeName === 'option') {
4061 $this->inSelect(
4062 array(
4063 'name' => 'option',
4064 'type' => HTML5::ENDTAG
4065 )
4066 );
4067 }
4068
4069 /* If the current node is an optgroup element, act as if an end tag
4070 with the tag name "optgroup" had been seen. */
4071 if (end($this->stack)->nodeName === 'optgroup') {
4072 $this->inSelect(
4073 array(
4074 'name' => 'optgroup',
4075 'type' => HTML5::ENDTAG
4076 )
4077 );
4078 }
4079
4080 /* Insert an HTML element for the token. */
4081 $this->insertElement($token);
4082
4083 /* An end tag token whose tag name is "optgroup" */
4084 } elseif ($token['type'] === HTML5::ENDTAG &&
4085 $token['name'] === 'optgroup'
4086 ) {
4087 /* First, if the current node is an option element, and the node
4088 immediately before it in the stack of open elements is an optgroup
4089 element, then act as if an end tag with the tag name "option" had
4090 been seen. */
4091 $elements_in_stack = count($this->stack);
4092
4093 if ($this->stack[$elements_in_stack - 1]->nodeName === 'option' &&
4094 $this->stack[$elements_in_stack - 2]->nodeName === 'optgroup'
4095 ) {
4096 $this->inSelect(
4097 array(
4098 'name' => 'option',
4099 'type' => HTML5::ENDTAG
4100 )
4101 );
4102 }
4103
4104 /* If the current node is an optgroup element, then pop that node
4105 from the stack of open elements. Otherwise, this is a parse error,
4106 ignore the token. */
4107 if ($this->stack[$elements_in_stack - 1] === 'optgroup') {
4108 array_pop($this->stack);
4109 }
4110
4111 /* An end tag token whose tag name is "option" */
4112 } elseif ($token['type'] === HTML5::ENDTAG &&
4113 $token['name'] === 'option'
4114 ) {
4115 /* If the current node is an option element, then pop that node
4116 from the stack of open elements. Otherwise, this is a parse error,
4117 ignore the token. */
4118 if (end($this->stack)->nodeName === 'option') {
4119 array_pop($this->stack);
4120 }
4121
4122 /* An end tag whose tag name is "select" */
4123 } elseif ($token['type'] === HTML5::ENDTAG &&
4124 $token['name'] === 'select'
4125 ) {
4126 /* If the stack of open elements does not have an element in table
4127 scope with the same tag name as the token, this is a parse error.
4128 Ignore the token. (innerHTML case) */
4129 if (!$this->elementInScope($token['name'], true)) {
4130 // w/e
4131
4132 /* Otherwise: */
4133 } else {
4134 /* Pop elements from the stack of open elements until a select
4135 element has been popped from the stack. */
4136 while (true) {
4137 $current = end($this->stack)->nodeName;
4138 array_pop($this->stack);
4139
4140 if ($current === 'select') {
4141 break;
4142 }
4143 }
4144
4145 /* Reset the insertion mode appropriately. */
4146 $this->resetInsertionMode();
4147 }
4148
4149 /* A start tag whose tag name is "select" */
4150 } elseif ($token['name'] === 'select' &&
4151 $token['type'] === HTML5::STARTTAG
4152 ) {
4153 /* Parse error. Act as if the token had been an end tag with the
4154 tag name "select" instead. */
4155 $this->inSelect(
4156 array(
4157 'name' => 'select',
4158 'type' => HTML5::ENDTAG
4159 )
4160 );
4161
4162 /* An end tag whose tag name is one of: "caption", "table", "tbody",
4163 "tfoot", "thead", "tr", "td", "th" */
4164 } elseif (in_array(
4165 $token['name'],
4166 array(
4167 'caption',
4168 'table',
4169 'tbody',
4170 'tfoot',
4171 'thead',
4172 'tr',
4173 'td',
4174 'th'
4175 )
4176 ) && $token['type'] === HTML5::ENDTAG
4177 ) {
4178 /* Parse error. */
4179 // w/e
4180
4181 /* If the stack of open elements has an element in table scope with
4182 the same tag name as that of the token, then act as if an end tag
4183 with the tag name "select" had been seen, and reprocess the token.
4184 Otherwise, ignore the token. */
4185 if ($this->elementInScope($token['name'], true)) {
4186 $this->inSelect(
4187 array(
4188 'name' => 'select',
4189 'type' => HTML5::ENDTAG
4190 )
4191 );
4192
4193 $this->mainPhase($token);
4194 }
4195
4196 /* Anything else */
4197 } else {
4198 /* Parse error. Ignore the token. */
4199 }
4200 }
4201
4202 private function afterBody($token)
4203 {
4204 /* Handle the token as follows: */
4205
4206 /* A character token that is one of one of U+0009 CHARACTER TABULATION,
4207 U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
4208 or U+0020 SPACE */
4209 if ($token['type'] === HTML5::CHARACTR &&
4210 preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])
4211 ) {
4212 /* Process the token as it would be processed if the insertion mode
4213 was "in body". */
4214 $this->inBody($token);
4215
4216 /* A comment token */
4217 } elseif ($token['type'] === HTML5::COMMENT) {
4218 /* Append a Comment node to the first element in the stack of open
4219 elements (the html element), with the data attribute set to the
4220 data given in the comment token. */
4221 $comment = $this->dom->createComment($token['data']);
4222 $this->stack[0]->appendChild($comment);
4223
4224 /* An end tag with the tag name "html" */
4225 } elseif ($token['type'] === HTML5::ENDTAG && $token['name'] === 'html') {
4226 /* If the parser was originally created in order to handle the
4227 setting of an element's innerHTML attribute, this is a parse error;
4228 ignore the token. (The element will be an html element in this
4229 case.) (innerHTML case) */
4230
4231 /* Otherwise, switch to the trailing end phase. */
4232 $this->phase = self::END_PHASE;
4233
4234 /* Anything else */
4235 } else {
4236 /* Parse error. Set the insertion mode to "in body" and reprocess
4237 the token. */
4238 $this->mode = self::IN_BODY;
4239 return $this->inBody($token);
4240 }
4241 }
4242
4243 private function inFrameset($token)
4244 {
4245 /* Handle the token as follows: */
4246
4247 /* A character token that is one of one of U+0009 CHARACTER TABULATION,
4248 U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
4249 U+000D CARRIAGE RETURN (CR), or U+0020 SPACE */
4250 if ($token['type'] === HTML5::CHARACTR &&
4251 preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])
4252 ) {
4253 /* Append the character to the current node. */
4254 $this->insertText($token['data']);
4255
4256 /* A comment token */
4257 } elseif ($token['type'] === HTML5::COMMENT) {
4258 /* Append a Comment node to the current node with the data
4259 attribute set to the data given in the comment token. */
4260 $this->insertComment($token['data']);
4261
4262 /* A start tag with the tag name "frameset" */
4263 } elseif ($token['name'] === 'frameset' &&
4264 $token['type'] === HTML5::STARTTAG
4265 ) {
4266 $this->insertElement($token);
4267
4268 /* An end tag with the tag name "frameset" */
4269 } elseif ($token['name'] === 'frameset' &&
4270 $token['type'] === HTML5::ENDTAG
4271 ) {
4272 /* If the current node is the root html element, then this is a
4273 parse error; ignore the token. (innerHTML case) */
4274 if (end($this->stack)->nodeName === 'html') {
4275 // Ignore
4276
4277 } else {
4278 /* Otherwise, pop the current node from the stack of open
4279 elements. */
4280 array_pop($this->stack);
4281
4282 /* If the parser was not originally created in order to handle
4283 the setting of an element's innerHTML attribute (innerHTML case),
4284 and the current node is no longer a frameset element, then change
4285 the insertion mode to "after frameset". */
4286 $this->mode = self::AFTR_FRAME;
4287 }
4288
4289 /* A start tag with the tag name "frame" */
4290 } elseif ($token['name'] === 'frame' &&
4291 $token['type'] === HTML5::STARTTAG
4292 ) {
4293 /* Insert an HTML element for the token. */
4294 $this->insertElement($token);
4295
4296 /* Immediately pop the current node off the stack of open elements. */
4297 array_pop($this->stack);
4298
4299 /* A start tag with the tag name "noframes" */
4300 } elseif ($token['name'] === 'noframes' &&
4301 $token['type'] === HTML5::STARTTAG
4302 ) {
4303 /* Process the token as if the insertion mode had been "in body". */
4304 $this->inBody($token);
4305
4306 /* Anything else */
4307 } else {
4308 /* Parse error. Ignore the token. */
4309 }
4310 }
4311
4312 private function afterFrameset($token)
4313 {
4314 /* Handle the token as follows: */
4315
4316 /* A character token that is one of one of U+0009 CHARACTER TABULATION,
4317 U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
4318 U+000D CARRIAGE RETURN (CR), or U+0020 SPACE */
4319 if ($token['type'] === HTML5::CHARACTR &&
4320 preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])
4321 ) {
4322 /* Append the character to the current node. */
4323 $this->insertText($token['data']);
4324
4325 /* A comment token */
4326 } elseif ($token['type'] === HTML5::COMMENT) {
4327 /* Append a Comment node to the current node with the data
4328 attribute set to the data given in the comment token. */
4329 $this->insertComment($token['data']);
4330
4331 /* An end tag with the tag name "html" */
4332 } elseif ($token['name'] === 'html' &&
4333 $token['type'] === HTML5::ENDTAG
4334 ) {
4335 /* Switch to the trailing end phase. */
4336 $this->phase = self::END_PHASE;
4337
4338 /* A start tag with the tag name "noframes" */
4339 } elseif ($token['name'] === 'noframes' &&
4340 $token['type'] === HTML5::STARTTAG
4341 ) {
4342 /* Process the token as if the insertion mode had been "in body". */
4343 $this->inBody($token);
4344
4345 /* Anything else */
4346 } else {
4347 /* Parse error. Ignore the token. */
4348 }
4349 }
4350
4351 private function trailingEndPhase($token)
4352 {
4353 /* After the main phase, as each token is emitted from the tokenisation
4354 stage, it must be processed as described in this section. */
4355
4356 /* A DOCTYPE token */
4357 if ($token['type'] === HTML5::DOCTYPE) {
4358 // Parse error. Ignore the token.
4359
4360 /* A comment token */
4361 } elseif ($token['type'] === HTML5::COMMENT) {
4362 /* Append a Comment node to the Document object with the data
4363 attribute set to the data given in the comment token. */
4364 $comment = $this->dom->createComment($token['data']);
4365 $this->dom->appendChild($comment);
4366
4367 /* A character token that is one of one of U+0009 CHARACTER TABULATION,
4368 U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
4369 or U+0020 SPACE */
4370 } elseif ($token['type'] === HTML5::CHARACTR &&
4371 preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])
4372 ) {
4373 /* Process the token as it would be processed in the main phase. */
4374 $this->mainPhase($token);
4375
4376 /* A character token that is not one of U+0009 CHARACTER TABULATION,
4377 U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
4378 or U+0020 SPACE. Or a start tag token. Or an end tag token. */
4379 } elseif (($token['type'] === HTML5::CHARACTR &&
4380 preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) ||
4381 $token['type'] === HTML5::STARTTAG || $token['type'] === HTML5::ENDTAG
4382 ) {
4383 /* Parse error. Switch back to the main phase and reprocess the
4384 token. */
4385 $this->phase = self::MAIN_PHASE;
4386 return $this->mainPhase($token);
4387
4388 /* An end-of-file token */
4389 } elseif ($token['type'] === HTML5::EOF) {
4390 /* OMG DONE!! */
4391 }
4392 }
4393
4394 private function insertElement($token, $append = true, $check = false)
4395 {
4396 // Proprietary workaround for libxml2's limitations with tag names
4397 if ($check) {
4398 // Slightly modified HTML5 tag-name modification,
4399 // removing anything that's not an ASCII letter, digit, or hyphen
4400 $token['name'] = preg_replace('/[^a-z0-9-]/i', '', $token['name']);
4401 // Remove leading hyphens and numbers
4402 $token['name'] = ltrim($token['name'], '-0..9');
4403 // In theory, this should ever be needed, but just in case
4404 if ($token['name'] === '') {
4405 $token['name'] = 'span';
4406 } // arbitrary generic choice
4407 }
4408
4409 $el = $this->dom->createElement($token['name']);
4410
4411 foreach ($token['attr'] as $attr) {
4412 if (!$el->hasAttribute($attr['name'])) {
4413 $el->setAttribute($attr['name'], $attr['value']);
4414 }
4415 }
4416
4417 $this->appendToRealParent($el);
4418 $this->stack[] = $el;
4419
4420 return $el;
4421 }
4422
4423 private function insertText($data)
4424 {
4425 $text = $this->dom->createTextNode($data);
4426 $this->appendToRealParent($text);
4427 }
4428
4429 private function insertComment($data)
4430 {
4431 $comment = $this->dom->createComment($data);
4432 $this->appendToRealParent($comment);
4433 }
4434
4435 private function appendToRealParent($node)
4436 {
4437 if ($this->foster_parent === null) {
4438 end($this->stack)->appendChild($node);
4439
4440 } elseif ($this->foster_parent !== null) {
4441 /* If the foster parent element is the parent element of the
4442 last table element in the stack of open elements, then the new
4443 node must be inserted immediately before the last table element
4444 in the stack of open elements in the foster parent element;
4445 otherwise, the new node must be appended to the foster parent
4446 element. */
4447 for ($n = count($this->stack) - 1; $n >= 0; $n--) {
4448 if ($this->stack[$n]->nodeName === 'table' &&
4449 $this->stack[$n]->parentNode !== null
4450 ) {
4451 $table = $this->stack[$n];
4452 break;
4453 }
4454 }
4455
4456 if (isset($table) && $this->foster_parent->isSameNode($table->parentNode)) {
4457 $this->foster_parent->insertBefore($node, $table);
4458 } else {
4459 $this->foster_parent->appendChild($node);
4460 }
4461
4462 $this->foster_parent = null;
4463 }
4464 }
4465
4466 private function elementInScope($el, $table = false)
4467 {
4468 if (is_array($el)) {
4469 foreach ($el as $element) {
4470 if ($this->elementInScope($element, $table)) {
4471 return true;
4472 }
4473 }
4474
4475 return false;
4476 }
4477
4478 $leng = count($this->stack);
4479
4480 for ($n = 0; $n < $leng; $n++) {
4481 /* 1. Initialise node to be the current node (the bottommost node of
4482 the stack). */
4483 $node = $this->stack[$leng - 1 - $n];
4484
4485 if ($node->tagName === $el) {
4486 /* 2. If node is the target node, terminate in a match state. */
4487 return true;
4488
4489 } elseif ($node->tagName === 'table') {
4490 /* 3. Otherwise, if node is a table element, terminate in a failure
4491 state. */
4492 return false;
4493
4494 } elseif ($table === true && in_array(
4495 $node->tagName,
4496 array(
4497 'caption',
4498 'td',
4499 'th',
4500 'button',
4501 'marquee',
4502 'object'
4503 )
4504 )
4505 ) {
4506 /* 4. Otherwise, if the algorithm is the "has an element in scope"
4507 variant (rather than the "has an element in table scope" variant),
4508 and node is one of the following, terminate in a failure state. */
4509 return false;
4510
4511 } elseif ($node === $node->ownerDocument->documentElement) {
4512 /* 5. Otherwise, if node is an html element (root element), terminate
4513 in a failure state. (This can only happen if the node is the topmost
4514 node of the stack of open elements, and prevents the next step from
4515 being invoked if there are no more elements in the stack.) */
4516 return false;
4517 }
4518
4519 /* Otherwise, set node to the previous entry in the stack of open
4520 elements and return to step 2. (This will never fail, since the loop
4521 will always terminate in the previous step if the top of the stack
4522 is reached.) */
4523 }
4524 }
4525
4526 private function reconstructActiveFormattingElements()
4527 {
4528 /* 1. If there are no entries in the list of active formatting elements,
4529 then there is nothing to reconstruct; stop this algorithm. */
4530 $formatting_elements = count($this->a_formatting);
4531
4532 if ($formatting_elements === 0) {
4533 return false;
4534 }
4535
4536 /* 3. Let entry be the last (most recently added) element in the list
4537 of active formatting elements. */
4538 $entry = end($this->a_formatting);
4539
4540 /* 2. If the last (most recently added) entry in the list of active
4541 formatting elements is a marker, or if it is an element that is in the
4542 stack of open elements, then there is nothing to reconstruct; stop this
4543 algorithm. */
4544 if ($entry === self::MARKER || in_array($entry, $this->stack, true)) {
4545 return false;
4546 }
4547
4548 for ($a = $formatting_elements - 1; $a >= 0; true) {
4549 /* 4. If there are no entries before entry in the list of active
4550 formatting elements, then jump to step 8. */
4551 if ($a === 0) {
4552 $step_seven = false;
4553 break;
4554 }
4555
4556 /* 5. Let entry be the entry one earlier than entry in the list of
4557 active formatting elements. */
4558 $a--;
4559 $entry = $this->a_formatting[$a];
4560
4561 /* 6. If entry is neither a marker nor an element that is also in
4562 thetack of open elements, go to step 4. */
4563 if ($entry === self::MARKER || in_array($entry, $this->stack, true)) {
4564 break;
4565 }
4566 }
4567
4568 while (true) {
4569 /* 7. Let entry be the element one later than entry in the list of
4570 active formatting elements. */
4571 if (isset($step_seven) && $step_seven === true) {
4572 $a++;
4573 $entry = $this->a_formatting[$a];
4574 }
4575
4576 /* 8. Perform a shallow clone of the element entry to obtain clone. */
4577 $clone = $entry->cloneNode();
4578
4579 /* 9. Append clone to the current node and push it onto the stack
4580 of open elements so that it is the new current node. */
4581 end($this->stack)->appendChild($clone);
4582 $this->stack[] = $clone;
4583
4584 /* 10. Replace the entry for entry in the list with an entry for
4585 clone. */
4586 $this->a_formatting[$a] = $clone;
4587
4588 /* 11. If the entry for clone in the list of active formatting
4589 elements is not the last entry in the list, return to step 7. */
4590 if (end($this->a_formatting) !== $clone) {
4591 $step_seven = true;
4592 } else {
4593 break;
4594 }
4595 }
4596 }
4597
4598 private function clearTheActiveFormattingElementsUpToTheLastMarker()
4599 {
4600 /* When the steps below require the UA to clear the list of active
4601 formatting elements up to the last marker, the UA must perform the
4602 following steps: */
4603
4604 while (true) {
4605 /* 1. Let entry be the last (most recently added) entry in the list
4606 of active formatting elements. */
4607 $entry = end($this->a_formatting);
4608
4609 /* 2. Remove entry from the list of active formatting elements. */
4610 array_pop($this->a_formatting);
4611
4612 /* 3. If entry was a marker, then stop the algorithm at this point.
4613 The list has been cleared up to the last marker. */
4614 if ($entry === self::MARKER) {
4615 break;
4616 }
4617 }
4618 }
4619
4620 private function generateImpliedEndTags($exclude = array())
4621 {
4622 /* When the steps below require the UA to generate implied end tags,
4623 then, if the current node is a dd element, a dt element, an li element,
4624 a p element, a td element, a th element, or a tr element, the UA must
4625 act as if an end tag with the respective tag name had been seen and
4626 then generate implied end tags again. */
4627 $node = end($this->stack);
4628 $elements = array_diff(array('dd', 'dt', 'li', 'p', 'td', 'th', 'tr'), $exclude);
4629
4630 while (in_array(end($this->stack)->nodeName, $elements)) {
4631 array_pop($this->stack);
4632 }
4633 }
4634
4635 private function getElementCategory($node)
4636 {
4637 $name = $node->tagName;
4638 if (in_array($name, $this->special)) {
4639 return self::SPECIAL;
4640 } elseif (in_array($name, $this->scoping)) {
4641 return self::SCOPING;
4642 } elseif (in_array($name, $this->formatting)) {
4643 return self::FORMATTING;
4644 } else {
4645 return self::PHRASING;
4646 }
4647 }
4648
4649 private function clearStackToTableContext($elements)
4650 {
4651 /* When the steps above require the UA to clear the stack back to a
4652 table context, it means that the UA must, while the current node is not
4653 a table element or an html element, pop elements from the stack of open
4654 elements. If this causes any elements to be popped from the stack, then
4655 this is a parse error. */
4656 while (true) {
4657 $node = end($this->stack)->nodeName;
4658
4659 if (in_array($node, $elements)) {
4660 break;
4661 } else {
4662 array_pop($this->stack);
4663 }
4664 }
4665 }
4666
4667 private function resetInsertionMode()
4668 {
4669 /* 1. Let last be false. */
4670 $last = false;
4671 $leng = count($this->stack);
4672
4673 for ($n = $leng - 1; $n >= 0; $n--) {
4674 /* 2. Let node be the last node in the stack of open elements. */
4675 $node = $this->stack[$n];
4676
4677 /* 3. If node is the first node in the stack of open elements, then
4678 set last to true. If the element whose innerHTML attribute is being
4679 set is neither a td element nor a th element, then set node to the
4680 element whose innerHTML attribute is being set. (innerHTML case) */
4681 if ($this->stack[0]->isSameNode($node)) {
4682 $last = true;
4683 }
4684
4685 /* 4. If node is a select element, then switch the insertion mode to
4686 "in select" and abort these steps. (innerHTML case) */
4687 if ($node->nodeName === 'select') {
4688 $this->mode = self::IN_SELECT;
4689 break;
4690
4691 /* 5. If node is a td or th element, then switch the insertion mode
4692 to "in cell" and abort these steps. */
4693 } elseif ($node->nodeName === 'td' || $node->nodeName === 'th') {
4694 $this->mode = self::IN_CELL;
4695 break;
4696
4697 /* 6. If node is a tr element, then switch the insertion mode to
4698 "in row" and abort these steps. */
4699 } elseif ($node->nodeName === 'tr') {
4700 $this->mode = self::IN_ROW;
4701 break;
4702
4703 /* 7. If node is a tbody, thead, or tfoot element, then switch the
4704 insertion mode to "in table body" and abort these steps. */
4705 } elseif (in_array($node->nodeName, array('tbody', 'thead', 'tfoot'))) {
4706 $this->mode = self::IN_TBODY;
4707 break;
4708
4709 /* 8. If node is a caption element, then switch the insertion mode
4710 to "in caption" and abort these steps. */
4711 } elseif ($node->nodeName === 'caption') {
4712 $this->mode = self::IN_CAPTION;
4713 break;
4714
4715 /* 9. If node is a colgroup element, then switch the insertion mode
4716 to "in column group" and abort these steps. (innerHTML case) */
4717 } elseif ($node->nodeName === 'colgroup') {
4718 $this->mode = self::IN_CGROUP;
4719 break;
4720
4721 /* 10. If node is a table element, then switch the insertion mode
4722 to "in table" and abort these steps. */
4723 } elseif ($node->nodeName === 'table') {
4724 $this->mode = self::IN_TABLE;
4725 break;
4726
4727 /* 11. If node is a head element, then switch the insertion mode
4728 to "in body" ("in body"! not "in head"!) and abort these steps.
4729 (innerHTML case) */
4730 } elseif ($node->nodeName === 'head') {
4731 $this->mode = self::IN_BODY;
4732 break;
4733
4734 /* 12. If node is a body element, then switch the insertion mode to
4735 "in body" and abort these steps. */
4736 } elseif ($node->nodeName === 'body') {
4737 $this->mode = self::IN_BODY;
4738 break;
4739
4740 /* 13. If node is a frameset element, then switch the insertion
4741 mode to "in frameset" and abort these steps. (innerHTML case) */
4742 } elseif ($node->nodeName === 'frameset') {
4743 $this->mode = self::IN_FRAME;
4744 break;
4745
4746 /* 14. If node is an html element, then: if the head element
4747 pointer is null, switch the insertion mode to "before head",
4748 otherwise, switch the insertion mode to "after head". In either
4749 case, abort these steps. (innerHTML case) */
4750 } elseif ($node->nodeName === 'html') {
4751 $this->mode = ($this->head_pointer === null)
4752 ? self::BEFOR_HEAD
4753 : self::AFTER_HEAD;
4754
4755 break;
4756
4757 /* 15. If last is true, then set the insertion mode to "in body"
4758 and abort these steps. (innerHTML case) */
4759 } elseif ($last) {
4760 $this->mode = self::IN_BODY;
4761 break;
4762 }
4763 }
4764 }
4765
4766 private function closeCell()
4767 {
4768 /* If the stack of open elements has a td or th element in table scope,
4769 then act as if an end tag token with that tag name had been seen. */
4770 foreach (array('td', 'th') as $cell) {
4771 if ($this->elementInScope($cell, true)) {
4772 $this->inCell(
4773 array(
4774 'name' => $cell,
4775 'type' => HTML5::ENDTAG
4776 )
4777 );
4778
4779 break;
4780 }
4781 }
4782 }
4783
4784 public function save()
4785 {
4786 return $this->dom;
4787 }
4788}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-26 19:10:59 +0000