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<?php

class HTML5

{

private $data;

private $char;

private $EOF;

private $state;

private $tree;

private $token;

private $content_model;

private $escape = false;

private $entities = array('AElig;','AElig','AMP;','AMP','Aacute;','Aacute',

'Acirc;','Acirc','Agrave;','Agrave','Alpha;','Aring;','Aring','Atilde;',

'Atilde','Auml;','Auml','Beta;','COPY;','COPY','Ccedil;','Ccedil','Chi;',

'Dagger;','Delta;','ETH;','ETH','Eacute;','Eacute','Ecirc;','Ecirc','Egrave;',

'Egrave','Epsilon;','Eta;','Euml;','Euml','GT;','GT','Gamma;','Iacute;',

'Iacute','Icirc;','Icirc','Igrave;','Igrave','Iota;','Iuml;','Iuml','Kappa;',

'LT;','LT','Lambda;','Mu;','Ntilde;','Ntilde','Nu;','OElig;','Oacute;',

'Oacute','Ocirc;','Ocirc','Ograve;','Ograve','Omega;','Omicron;','Oslash;',

'Oslash','Otilde;','Otilde','Ouml;','Ouml','Phi;','Pi;','Prime;','Psi;',

'QUOT;','QUOT','REG;','REG','Rho;','Scaron;','Sigma;','THORN;','THORN',

'TRADE;','Tau;','Theta;','Uacute;','Uacute','Ucirc;','Ucirc','Ugrave;',

'Ugrave','Upsilon;','Uuml;','Uuml','Xi;','Yacute;','Yacute','Yuml;','Zeta;',

'aacute;','aacute','acirc;','acirc','acute;','acute','aelig;','aelig',

'agrave;','agrave','alefsym;','alpha;','amp;','amp','and;','ang;','apos;',

'aring;','aring','asymp;','atilde;','atilde','auml;','auml','bdquo;','beta;',

'brvbar;','brvbar','bull;','cap;','ccedil;','ccedil','cedil;','cedil',

'cent;','cent','chi;','circ;','clubs;','cong;','copy;','copy','crarr;',

'cup;','curren;','curren','dArr;','dagger;','darr;','deg;','deg','delta;',

'diams;','divide;','divide','eacute;','eacute','ecirc;','ecirc','egrave;',

'egrave','empty;','emsp;','ensp;','epsilon;','equiv;','eta;','eth;','eth',

'euml;','euml','euro;','exist;','fnof;','forall;','frac12;','frac12',

'frac14;','frac14','frac34;','frac34','frasl;','gamma;','ge;','gt;','gt',

'hArr;','harr;','hearts;','hellip;','iacute;','iacute','icirc;','icirc',

'iexcl;','iexcl','igrave;','igrave','image;','infin;','int;','iota;',

'iquest;','iquest','isin;','iuml;','iuml','kappa;','lArr;','lambda;','lang;',

'laquo;','laquo','larr;','lceil;','ldquo;','le;','lfloor;','lowast;','loz;',

'lrm;','lsaquo;','lsquo;','lt;','lt','macr;','macr','mdash;','micro;','micro',

'middot;','middot','minus;','mu;','nabla;','nbsp;','nbsp','ndash;','ne;',

'ni;','not;','not','notin;','nsub;','ntilde;','ntilde','nu;','oacute;',

'oacute','ocirc;','ocirc','oelig;','ograve;','ograve','oline;','omega;',

'omicron;','oplus;','or;','ordf;','ordf','ordm;','ordm','oslash;','oslash',

'otilde;','otilde','otimes;','ouml;','ouml','para;','para','part;','permil;',

'perp;','phi;','pi;','piv;','plusmn;','plusmn','pound;','pound','prime;',

'prod;','prop;','psi;','quot;','quot','rArr;','radic;','rang;','raquo;',

'raquo','rarr;','rceil;','rdquo;','real;','reg;','reg','rfloor;','rho;',

'rlm;','rsaquo;','rsquo;','sbquo;','scaron;','sdot;','sect;','sect','shy;',

'shy','sigma;','sigmaf;','sim;','spades;','sub;','sube;','sum;','sup1;',

'sup1','sup2;','sup2','sup3;','sup3','sup;','supe;','szlig;','szlig','tau;',

'there4;','theta;','thetasym;','thinsp;','thorn;','thorn','tilde;','times;',

'times','trade;','uArr;','uacute;','uacute','uarr;','ucirc;','ucirc',

'ugrave;','ugrave','uml;','uml','upsih;','upsilon;','uuml;','uuml','weierp;',

'xi;','yacute;','yacute','yen;','yen','yuml;','yuml','zeta;','zwj;','zwnj;');

const PCDATA    = 0;

const RCDATA    = 1;

const CDATA     = 2;

const PLAINTEXT = 3;

const DOCTYPE  = 0;

const STARTTAG = 1;

const ENDTAG   = 2;

const COMMENT  = 3;

const CHARACTR = 4;

const EOF      = 5;

public function __construct($data)

{

$data = str_replace("\r\n", "\n", $data);

$date = str_replace("\r", null, $data);

$this->data = $data;

$this->char = -1;

$this->EOF  = strlen($data);

$this->tree = new HTML5TreeConstructer;

$this->content_model = self::PCDATA;

$this->state = 'data';

while($this->state !== null) {

$this->{$this->state.'State'}();

}

public function save()

{

return $this->tree->save();

}

private function char()

{

return ($this->char < $this->EOF)

? $this->data[$this->char]

: false;

}

private function character($s, $l = 0)

{

if($s + $l < $this->EOF) {

if($l === 0) {

return $this->data[$s];

} else {

return substr($this->data, $s, $l);

}

private function characters($char_class, $start)

{

return preg_replace('#^(['.$char_class.']+).*#s', '\\1', substr($this->data, $start));

}

private function dataState()

{

// Consume the next input character

$this->char++;

$char = $this->char();

if($char === '&' && ($this->content_model === self::PCDATA || $this->content_model === self::RCDATA)) {

/* U+0026 AMPERSAND (&)

When the content model flag is set to one of the PCDATA or RCDATA

states: switch to the entity data state. Otherwise: treat it as per

the "anything else"    entry below. */

$this->state = 'entityData';

} elseif($char === '-') {

/* If the content model flag is set to either the RCDATA state or

the CDATA state, and the escape flag is false, and there are at

least three characters before this one in the input stream, and the

last four characters in the input stream, including this one, are

U+003C LESS-THAN SIGN, U+0021 EXCLAMATION MARK, U+002D HYPHEN-MINUS,

and U+002D HYPHEN-MINUS ("<!--"), then set the escape flag to true. */

if(($this->content_model === self::RCDATA || $this->content_model ===

self::CDATA) && $this->escape === false &&

$this->char >= 3 && $this->character($this->char - 4, 4) === '<!--') {

$this->escape = true;

}

/* In any case, emit the input character as a character token. Stay

in the data state. */

$this->emitToken(array(

'type' => self::CHARACTR,

'data' => $char

));

/* U+003C LESS-THAN SIGN (<) */

} elseif($char === '<' && ($this->content_model === self::PCDATA ||

(($this->content_model === self::RCDATA ||

$this->content_model === self::CDATA) && $this->escape === false))) {

/* When the content model flag is set to the PCDATA state: switch

to the tag open state.

When the content model flag is set to either the RCDATA state or

the CDATA state and the escape flag is false: switch to the tag

open state.

Otherwise: treat it as per the "anything else" entry below. */

$this->state = 'tagOpen';

/* U+003E GREATER-THAN SIGN (>) */

} elseif($char === '>') {

/* If the content model flag is set to either the RCDATA state or

the CDATA state, and the escape flag is true, and the last three

characters in the input stream including this one are U+002D

HYPHEN-MINUS, U+002D HYPHEN-MINUS, U+003E GREATER-THAN SIGN ("-->"),

set the escape flag to false. */

if(($this->content_model === self::RCDATA ||

$this->content_model === self::CDATA) && $this->escape === true &&

$this->character($this->char, 3) === '-->') {

$this->escape = false;

}

/* In any case, emit the input character as a character token.

Stay in the data state. */

$this->emitToken(array(

'type' => self::CHARACTR,

'data' => $char

));

} elseif($this->char === $this->EOF) {

/* EOF

Emit an end-of-file token. */

$this->EOF();

} elseif($this->content_model === self::PLAINTEXT) {

/* When the content model flag is set to the PLAINTEXT state

THIS DIFFERS GREATLY FROM THE SPEC: Get the remaining characters of

the text and emit it as a character token. */

$this->emitToken(array(

'type' => self::CHARACTR,

'data' => substr($this->data, $this->char)

));

$this->EOF();

} else {

/* Anything else

THIS DIFFERS GREATLY FROM THE SPEC: Get as many character that

otherwise would also be treated as a character token and emit it

as a single character token. Stay in the data state. */

$len  = strcspn($this->data, '<&', $this->char);

$char = substr($this->data, $this->char, $len);

$this->char += $len - 1;

$this->emitToken(array(

'type' => self::CHARACTR,

'data' => $char

));

$this->state = 'data';

}

private function entityDataState()

{

// Attempt to consume an entity.

$entity = $this->entity();

// If nothing is returned, emit a U+0026 AMPERSAND character token.

// Otherwise, emit the character token that was returned.

$char = (!$entity) ? '&' : $entity;

$this->emitToken($char);

// Finally, switch to the data state.

$this->state = 'data';

}

private function tagOpenState()

{

switch($this->content_model) {

case self::RCDATA:

case self::CDATA:

/* If the next input character is a U+002F SOLIDUS (/) character,

consume it and switch to the close tag open state. If the next

input character is not a U+002F SOLIDUS (/) character, emit a

U+003C LESS-THAN SIGN character token and switch to the data

state to process the next input character. */

if($this->character($this->char + 1) === '/') {

$this->char++;

$this->state = 'closeTagOpen';

} else {

$this->emitToken(array(

'type' => self::CHARACTR,

'data' => '<'

));

$this->state = 'data';

}

break;

case self::PCDATA:

// If the content model flag is set to the PCDATA state

// Consume the next input character:

$this->char++;

$char = $this->char();

if($char === '!') {

/* U+0021 EXCLAMATION MARK (!)

Switch to the markup declaration open state. */

$this->state = 'markupDeclarationOpen';

} elseif($char === '/') {

/* U+002F SOLIDUS (/)

Switch to the close tag open state. */

$this->state = 'closeTagOpen';

} elseif(preg_match('/^[A-Za-z]$/', $char)) {

/* U+0041 LATIN LETTER A through to U+005A LATIN LETTER Z

Create a new start tag token, set its tag name to the lowercase

version of the input character (add 0x0020 to the character's code

point), then switch to the tag name state. (Don't emit the token

yet; further details will be filled in before it is emitted.) */

$this->token = array(

'name'  => strtolower($char),

'type'  => self::STARTTAG,

'attr'  => array()

);

$this->state = 'tagName';

} elseif($char === '>') {

/* U+003E GREATER-THAN SIGN (>)

Parse error. Emit a U+003C LESS-THAN SIGN character token and a

U+003E GREATER-THAN SIGN character token. Switch to the data state. */

$this->emitToken(array(

'type' => self::CHARACTR,

'data' => '<>'

));

$this->state = 'data';

} elseif($char === '?') {

/* U+003F QUESTION MARK (?)

Parse error. Switch to the bogus comment state. */

$this->state = 'bogusComment';

} else {

/* Anything else

Parse error. Emit a U+003C LESS-THAN SIGN character token and

reconsume the current input character in the data state. */

$this->emitToken(array(

'type' => self::CHARACTR,

'data' => '<'

));

$this->char--;

$this->state = 'data';

}

break;

}

private function closeTagOpenState()

{

$next_node = strtolower($this->characters('A-Za-z', $this->char + 1));

$the_same = count($this->tree->stack) > 0 && $next_node === end($this->tree->stack)->nodeName;

if(($this->content_model === self::RCDATA || $this->content_model === self::CDATA) &&

(!$the_same || ($the_same && (!preg_match('/[\t\n\x0b\x0c >\/]/',

$this->character($this->char + 1 + strlen($next_node))) || $this->EOF === $this->char)))) {

/* If the content model flag is set to the RCDATA or CDATA states then

examine the next few characters. If they do not match the tag name of

the last start tag token emitted (case insensitively), or if they do but

they are not immediately followed by one of the following characters:

* U+0009 CHARACTER TABULATION

* U+000A LINE FEED (LF)

* U+000B LINE TABULATION

* U+000C FORM FEED (FF)

* U+0020 SPACE

* U+003E GREATER-THAN SIGN (>)

* U+002F SOLIDUS (/)

* EOF

...then there is a parse error. Emit a U+003C LESS-THAN SIGN character

token, a U+002F SOLIDUS character token, and switch to the data state

to process the next input character. */

$this->emitToken(array(

'type' => self::CHARACTR,

'data' => '</'

));

$this->state = 'data';

} else {

/* Otherwise, if the content model flag is set to the PCDATA state,

or if the next few characters do match that tag name, consume the

next input character: */

$this->char++;

$char = $this->char();

if(preg_match('/^[A-Za-z]$/', $char)) {

/* U+0041 LATIN LETTER A through to U+005A LATIN LETTER Z

Create a new end tag token, set its tag name to the lowercase version

of the input character (add 0x0020 to the character's code point), then

switch to the tag name state. (Don't emit the token yet; further details

will be filled in before it is emitted.) */

$this->token = array(

'name'  => strtolower($char),

'type'  => self::ENDTAG

);

$this->state = 'tagName';

} elseif($char === '>') {

/* U+003E GREATER-THAN SIGN (>)

Parse error. Switch to the data state. */

$this->state = 'data';

} elseif($this->char === $this->EOF) {

/* EOF

Parse error. Emit a U+003C LESS-THAN SIGN character token and a U+002F

SOLIDUS character token. Reconsume the EOF character in the data state. */

$this->emitToken(array(

'type' => self::CHARACTR,

'data' => '</'

));

$this->char--;

$this->state = 'data';

} else {

/* Parse error. Switch to the bogus comment state. */

$this->state = 'bogusComment';

}

private function tagNameState()

{

// Consume the next input character:

$this->char++;

$char = $this->character($this->char);

if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {

/* U+0009 CHARACTER TABULATION

U+000A LINE FEED (LF)

U+000B LINE TABULATION

U+000C FORM FEED (FF)

U+0020 SPACE

Switch to the before attribute name state. */

$this->state = 'beforeAttributeName';

} elseif($char === '>') {

/* U+003E GREATER-THAN SIGN (>)

Emit the current tag token. Switch to the data state. */

$this->emitToken($this->token);

$this->state = 'data';

} elseif($this->char === $this->EOF) {

/* EOF

Parse error. Emit the current tag token. Reconsume the EOF

character in the data state. */

$this->emitToken($this->token);

$this->char--;

$this->state = 'data';

} elseif($char === '/') {

/* U+002F SOLIDUS (/)

Parse error unless this is a permitted slash. Switch to the before

attribute name state. */

$this->state = 'beforeAttributeName';

} else {

/* Anything else

Append the current input character to the current tag token's tag name.

Stay in the tag name state. */

$this->token['name'] .= strtolower($char);

$this->state = 'tagName';

}

private function beforeAttributeNameState()

{

// Consume the next input character:

$this->char++;

$char = $this->character($this->char);

if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {

/* U+0009 CHARACTER TABULATION

U+000A LINE FEED (LF)

U+000B LINE TABULATION

U+000C FORM FEED (FF)

U+0020 SPACE

Stay in the before attribute name state. */

$this->state = 'beforeAttributeName';

} elseif($char === '>') {

/* U+003E GREATER-THAN SIGN (>)

Emit the current tag token. Switch to the data state. */

$this->emitToken($this->token);

$this->state = 'data';

} elseif($char === '/') {

/* U+002F SOLIDUS (/)

Parse error unless this is a permitted slash. Stay in the before

attribute name state. */

$this->state = 'beforeAttributeName';

} elseif($this->char === $this->EOF) {

/* EOF

Parse error. Emit the current tag token. Reconsume the EOF

character in the data state. */

$this->emitToken($this->token);

$this->char--;

$this->state = 'data';

} else {

/* Anything else

Start a new attribute in the current tag token. Set that attribute's

name to the current input character, and its value to the empty string.

Switch to the attribute name state. */

$this->token['attr'][] = array(

'name'  => strtolower($char),

'value' => null

);

$this->state = 'attributeName';

}

private function attributeNameState()

{

// Consume the next input character:

$this->char++;

$char = $this->character($this->char);

if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {

/* U+0009 CHARACTER TABULATION

U+000A LINE FEED (LF)

U+000B LINE TABULATION

U+000C FORM FEED (FF)

U+0020 SPACE

Stay in the before attribute name state. */

$this->state = 'afterAttributeName';

} elseif($char === '=') {

/* U+003D EQUALS SIGN (=)

Switch to the before attribute value state. */

$this->state = 'beforeAttributeValue';

} elseif($char === '>') {

/* U+003E GREATER-THAN SIGN (>)

Emit the current tag token. Switch to the data state. */

$this->emitToken($this->token);

$this->state = 'data';

} elseif($char === '/' && $this->character($this->char + 1) !== '>') {

/* U+002F SOLIDUS (/)

Parse error unless this is a permitted slash. Switch to the before

attribute name state. */

$this->state = 'beforeAttributeName';

} elseif($this->char === $this->EOF) {

/* EOF

Parse error. Emit the current tag token. Reconsume the EOF

character in the data state. */

$this->emitToken($this->token);

$this->char--;

$this->state = 'data';

} else {

/* Anything else

Append the current input character to the current attribute's name.

Stay in the attribute name state. */

$last = count($this->token['attr']) - 1;

$this->token['attr'][$last]['name'] .= strtolower($char);

$this->state = 'attributeName';

}

private function afterAttributeNameState()

{

// Consume the next input character:

$this->char++;

$char = $this->character($this->char);

if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {

/* U+0009 CHARACTER TABULATION

U+000A LINE FEED (LF)

U+000B LINE TABULATION

U+000C FORM FEED (FF)

U+0020 SPACE

Stay in the after attribute name state. */

$this->state = 'afterAttributeName';

} elseif($char === '=') {

/* U+003D EQUALS SIGN (=)

Switch to the before attribute value state. */

$this->state = 'beforeAttributeValue';

} elseif($char === '>') {

/* U+003E GREATER-THAN SIGN (>)

Emit the current tag token. Switch to the data state. */

$this->emitToken($this->token);

$this->state = 'data';

} elseif($char === '/' && $this->character($this->char + 1) !== '>') {

/* U+002F SOLIDUS (/)

Parse error unless this is a permitted slash. Switch to the

before attribute name state. */

$this->state = 'beforeAttributeName';

} elseif($this->char === $this->EOF) {

/* EOF

Parse error. Emit the current tag token. Reconsume the EOF

character in the data state. */

$this->emitToken($this->token);

$this->char--;

$this->state = 'data';

} else {

/* Anything else

Start a new attribute in the current tag token. Set that attribute's

name to the current input character, and its value to the empty string.

Switch to the attribute name state. */

$this->token['attr'][] = array(

'name'  => strtolower($char),

'value' => null

);

$this->state = 'attributeName';

}

private function beforeAttributeValueState()

{

// Consume the next input character:

$this->char++;

$char = $this->character($this->char);

if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {

/* U+0009 CHARACTER TABULATION

U+000A LINE FEED (LF)

U+000B LINE TABULATION

U+000C FORM FEED (FF)

U+0020 SPACE

Stay in the before attribute value state. */

$this->state = 'beforeAttributeValue';

} elseif($char === '"') {

/* U+0022 QUOTATION MARK (")

Switch to the attribute value (double-quoted) state. */

$this->state = 'attributeValueDoubleQuoted';

} elseif($char === '&') {

/* U+0026 AMPERSAND (&)

Switch to the attribute value (unquoted) state and reconsume

this input character. */

$this->char--;

$this->state = 'attributeValueUnquoted';

} elseif($char === '\'') {

/* U+0027 APOSTROPHE (')

Switch to the attribute value (single-quoted) state. */

$this->state = 'attributeValueSingleQuoted';

} elseif($char === '>') {

/* U+003E GREATER-THAN SIGN (>)

Emit the current tag token. Switch to the data state. */

$this->emitToken($this->token);

$this->state = 'data';

} else {

/* Anything else

Append the current input character to the current attribute's value.

Switch to the attribute value (unquoted) state. */

$last = count($this->token['attr']) - 1;

$this->token['attr'][$last]['value'] .= $char;

$this->state = 'attributeValueUnquoted';

}

private function attributeValueDoubleQuotedState()

{

// Consume the next input character:

$this->char++;

$char = $this->character($this->char);

if($char === '"') {

/* U+0022 QUOTATION MARK (")

Switch to the before attribute name state. */

$this->state = 'beforeAttributeName';

} elseif($char === '&') {

/* U+0026 AMPERSAND (&)

Switch to the entity in attribute value state. */

$this->entityInAttributeValueState('double');

} elseif($this->char === $this->EOF) {

/* EOF

Parse error. Emit the current tag token. Reconsume the character

in the data state. */

$this->emitToken($this->token);

$this->char--;

$this->state = 'data';

} else {

/* Anything else

Append the current input character to the current attribute's value.

Stay in the attribute value (double-quoted) state. */

$last = count($this->token['attr']) - 1;

$this->token['attr'][$last]['value'] .= $char;

$this->state = 'attributeValueDoubleQuoted';

}

private function attributeValueSingleQuotedState()

{

// Consume the next input character:

$this->char++;

$char = $this->character($this->char);

if($char === '\'') {

/* U+0022 QUOTATION MARK (')

Switch to the before attribute name state. */

$this->state = 'beforeAttributeName';

} elseif($char === '&') {

/* U+0026 AMPERSAND (&)

Switch to the entity in attribute value state. */

$this->entityInAttributeValueState('single');

} elseif($this->char === $this->EOF) {

/* EOF

Parse error. Emit the current tag token. Reconsume the character

in the data state. */

$this->emitToken($this->token);

$this->char--;

$this->state = 'data';

} else {

/* Anything else

Append the current input character to the current attribute's value.

Stay in the attribute value (single-quoted) state. */

$last = count($this->token['attr']) - 1;

$this->token['attr'][$last]['value'] .= $char;

$this->state = 'attributeValueSingleQuoted';

}

private function attributeValueUnquotedState()

{

// Consume the next input character:

$this->char++;

$char = $this->character($this->char);

if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {

/* U+0009 CHARACTER TABULATION

U+000A LINE FEED (LF)

U+000B LINE TABULATION

U+000C FORM FEED (FF)

U+0020 SPACE

Switch to the before attribute name state. */

$this->state = 'beforeAttributeName';

} elseif($char === '&') {

/* U+0026 AMPERSAND (&)

Switch to the entity in attribute value state. */

$this->entityInAttributeValueState('non');

} elseif($char === '>') {

/* U+003E GREATER-THAN SIGN (>)

Emit the current tag token. Switch to the data state. */

$this->emitToken($this->token);

$this->state = 'data';

} else {

/* Anything else

Append the current input character to the current attribute's value.

Stay in the attribute value (unquoted) state. */

$last = count($this->token['attr']) - 1;

$this->token['attr'][$last]['value'] .= $char;

$this->state = 'attributeValueUnquoted';

}

private function entityInAttributeValueState()

{

// Attempt to consume an entity.

$entity = $this->entity();

// If nothing is returned, append a U+0026 AMPERSAND character to the

// current attribute's value. Otherwise, emit the character token that

// was returned.

$char = (!$entity)

? '&'

: $entity;

$this->emitToken($char);

}

private function bogusCommentState()

{

/* Consume every character up to the first U+003E GREATER-THAN SIGN

character (>) or the end of the file (EOF), whichever comes first. Emit

a comment token whose data is the concatenation of all the characters

starting from and including the character that caused the state machine

to switch into the bogus comment state, up to and including the last

consumed character before the U+003E character, if any, or up to the

end of the file otherwise. (If the comment was started by the end of

the file (EOF), the token is empty.) */

$data = $this->characters('^>', $this->char);

$this->emitToken(array(

'data' => $data,

'type' => self::COMMENT

));

$this->char += strlen($data);

/* Switch to the data state. */

$this->state = 'data';

/* If the end of the file was reached, reconsume the EOF character. */

if($this->char === $this->EOF) {

$this->char = $this->EOF - 1;

}

private function markupDeclarationOpenState()

{

/* If the next two characters are both U+002D HYPHEN-MINUS (-)

characters, consume those two characters, create a comment token whose

data is the empty string, and switch to the comment state. */

if($this->character($this->char + 1, 2) === '--') {

$this->char += 2;

$this->state = 'comment';

$this->token = array(

'data' => null,

'type' => self::COMMENT

);

/* Otherwise if the next seven chacacters are a case-insensitive match

for the word "DOCTYPE", then consume those characters and switch to the

DOCTYPE state. */

} elseif(strtolower($this->character($this->char + 1, 7)) === 'doctype') {

$this->char += 7;

$this->state = 'doctype';

/* Otherwise, is is a parse error. Switch to the bogus comment state.

The next character that is consumed, if any, is the first character

that will be in the comment. */

} else {

$this->char++;

$this->state = 'bogusComment';

}

private function commentState()

{

/* Consume the next input character: */

$this->char++;

$char = $this->char();

/* U+002D HYPHEN-MINUS (-) */

if($char === '-') {

/* Switch to the comment dash state  */

$this->state = 'commentDash';

/* EOF */

} elseif($this->char === $this->EOF) {

/* Parse error. Emit the comment token. Reconsume the EOF character

in the data state. */

$this->emitToken($this->token);

$this->char--;

$this->state = 'data';

/* Anything else */

} else {

/* Append the input character to the comment token's data. Stay in

the comment state. */

$this->token['data'] .= $char;

}

private function commentDashState()

{

/* Consume the next input character: */

$this->char++;

$char = $this->char();

/* U+002D HYPHEN-MINUS (-) */

if($char === '-') {

/* Switch to the comment end state  */

$this->state = 'commentEnd';

/* EOF */

} elseif($this->char === $this->EOF) {

/* Parse error. Emit the comment token. Reconsume the EOF character

in the data state. */

$this->emitToken($this->token);

$this->char--;

$this->state = 'data';

/* Anything else */

} else {

/* Append a U+002D HYPHEN-MINUS (-) character and the input

character to the comment token's data. Switch to the comment state. */

$this->token['data'] .= '-'.$char;

$this->state = 'comment';

}

private function commentEndState()

{

/* Consume the next input character: */

$this->char++;

$char = $this->char();

if($char === '>') {

$this->emitToken($this->token);

$this->state = 'data';

} elseif($char === '-') {

$this->token['data'] .= '-';

} elseif($this->char === $this->EOF) {

$this->emitToken($this->token);

$this->char--;

$this->state = 'data';

} else {

$this->token['data'] .= '--'.$char;

$this->state = 'comment';

}

private function doctypeState()

{

/* Consume the next input character: */

$this->char++;

$char = $this->char();

if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {

$this->state = 'beforeDoctypeName';

} else {

$this->char--;

$this->state = 'beforeDoctypeName';

}

private function beforeDoctypeNameState()

{

/* Consume the next input character: */

$this->char++;

$char = $this->char();

if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {

// Stay in the before DOCTYPE name state.

} elseif(preg_match('/^[a-z]$/', $char)) {

$this->token = array(

'name' => strtoupper($char),

'type' => self::DOCTYPE,

'error' => true

);

$this->state = 'doctypeName';

} elseif($char === '>') {

$this->emitToken(array(

'name' => null,

'type' => self::DOCTYPE,

'error' => true

));

$this->state = 'data';

} elseif($this->char === $this->EOF) {

$this->emitToken(array(

'name' => null,

'type' => self::DOCTYPE,

'error' => true

));

$this->char--;

$this->state = 'data';

} else {

$this->token = array(

'name' => $char,

'type' => self::DOCTYPE,

'error' => true

);

$this->state = 'doctypeName';

}

private function doctypeNameState()

{

/* Consume the next input character: */

$this->char++;

$char = $this->char();

if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {

$this->state = 'AfterDoctypeName';

} elseif($char === '>') {

$this->emitToken($this->token);

$this->state = 'data';

} elseif(preg_match('/^[a-z]$/', $char)) {

$this->token['name'] .= strtoupper($char);

} elseif($this->char === $this->EOF) {

$this->emitToken($this->token);

$this->char--;

$this->state = 'data';

} else {

$this->token['name'] .= $char;

}

$this->token['error'] = ($this->token['name'] === 'HTML')

? false

: true;

}

private function afterDoctypeNameState()

{

/* Consume the next input character: */

$this->char++;

$char = $this->char();

if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {

// Stay in the DOCTYPE name state.

} elseif($char === '>') {

$this->emitToken($this->token);

$this->state = 'data';

} elseif($this->char === $this->EOF) {

$this->emitToken($this->token);

$this->char--;

$this->state = 'data';

} else {

$this->token['error'] = true;

$this->state = 'bogusDoctype';

}

private function bogusDoctypeState()

{

/* Consume the next input character: */

$this->char++;

$char = $this->char();

if($char === '>') {

$this->emitToken($this->token);

$this->state = 'data';

} elseif($this->char === $this->EOF) {

$this->emitToken($this->token);

$this->char--;

$this->state = 'data';

} else {

// Stay in the bogus DOCTYPE state.

}

private function entity()

{

$start = $this->char;

// This section defines how to consume an entity. This definition is

// used when parsing entities in text and in attributes.

// The behaviour depends on the identity of the next character (the

// one immediately after the U+0026 AMPERSAND character):

switch($this->character($this->char + 1)) {

// U+0023 NUMBER SIGN (#)

case '#':

// The behaviour further depends on the character after the

// U+0023 NUMBER SIGN:

switch($this->character($this->char + 1)) {

// U+0078 LATIN SMALL LETTER X

// U+0058 LATIN CAPITAL LETTER X

case 'x':

case 'X':

// Follow the steps below, but using the range of

// characters U+0030 DIGIT ZERO through to U+0039 DIGIT

// NINE, U+0061 LATIN SMALL LETTER A through to U+0066

// LATIN SMALL LETTER F, and U+0041 LATIN CAPITAL LETTER

// A, through to U+0046 LATIN CAPITAL LETTER F (in other

// words, 0-9, A-F, a-f).

$char = 1;

$char_class = '0-9A-Fa-f';

break;

// Anything else

default:

// Follow the steps below, but using the range of

// characters U+0030 DIGIT ZERO through to U+0039 DIGIT

// NINE (i.e. just 0-9).

$char = 0;

$char_class = '0-9';

break;

}

// Consume as many characters as match the range of characters

// given above.

$this->char++;

$e_name = $this->characters($char_class, $this->char + $char + 1);

$entity = $this->character($start, $this->char);

$cond = strlen($e_name) > 0;

// The rest of the parsing happens bellow.

break;

// Anything else

default:

// Consume the maximum number of characters possible, with the

// consumed characters case-sensitively matching one of the

// identifiers in the first column of the entities table.

$e_name = $this->characters('0-9A-Za-z;', $this->char + 1);

$len = strlen($e_name);

for($c = 1; $c <= $len; $c++) {

$id = substr($e_name, 0, $c);

$this->char++;

if(in_array($id, $this->entities)) {

$entity = $id;

break;

}

$cond = isset($entity);

// The rest of the parsing happens bellow.

break;

}

if(!$cond) {

// If no match can be made, then this is a parse error. No

// characters are consumed, and nothing is returned.

$this->char = $start;

return false;

}

// Return a character token for the character corresponding to the

// entity name (as given by the second column of the entities table).

return html_entity_decode('&'.$entity.';', ENT_QUOTES, 'UTF-8');

}

private function emitToken($token)

{

$emit = $this->tree->emitToken($token);

if(is_int($emit)) {

$this->content_model = $emit;

} elseif($token['type'] === self::ENDTAG) {

$this->content_model = self::PCDATA;

}

private function EOF()

{

$this->state = null;

$this->tree->emitToken(array(

'type' => self::EOF

));

}

class HTML5TreeConstructer

{

public $stack = array();

private $phase;

private $mode;

private $dom;

private $foster_parent = null;

private $a_formatting  = array();

private $head_pointer = null;

private $form_pointer = null;

private $scoping = array('button','caption','html','marquee','object','table','td','th');

private $formatting = array('a','b','big','em','font','i','nobr','s','small','strike','strong','tt','u');

private $special = array('address','area','base','basefont','bgsound',

'blockquote','body','br','center','col','colgroup','dd','dir','div','dl',

'dt','embed','fieldset','form','frame','frameset','h1','h2','h3','h4','h5',

'h6','head','hr','iframe','image','img','input','isindex','li','link',

'listing','menu','meta','noembed','noframes','noscript','ol','optgroup',

'option','p','param','plaintext','pre','script','select','spacer','style',

'tbody','textarea','tfoot','thead','title','tr','ul','wbr');

// The different phases.

const INIT_PHASE = 0;

const ROOT_PHASE = 1;

const MAIN_PHASE = 2;

const END_PHASE  = 3;

// The different insertion modes for the main phase.

const BEFOR_HEAD = 0;

const IN_HEAD    = 1;

const AFTER_HEAD = 2;

const IN_BODY    = 3;

const IN_TABLE   = 4;

const IN_CAPTION = 5;

const IN_CGROUP  = 6;

const IN_TBODY   = 7;

const IN_ROW     = 8;

const IN_CELL    = 9;

const IN_SELECT  = 10;

const AFTER_BODY = 11;

const IN_FRAME   = 12;

const AFTR_FRAME = 13;

// The different types of elements.

const SPECIAL    = 0;

const SCOPING    = 1;

const FORMATTING = 2;

const PHRASING   = 3;

const MARKER     = 0;

public function __construct()

{

$this->phase = self::INIT_PHASE;

$this->mode = self::BEFOR_HEAD;

$this->dom = new DOMDocument;

$this->dom->encoding = 'UTF-8';

$this->dom->preserveWhiteSpace = true;

$this->dom->substituteEntities = true;

$this->dom->strictErrorChecking = false;

}

// Process tag tokens

public function emitToken($token)

{

switch($this->phase) {

case self::INIT_PHASE: return $this->initPhase($token); break;

case self::ROOT_PHASE: return $this->rootElementPhase($token); break;

case self::MAIN_PHASE: return $this->mainPhase($token); break;

case self::END_PHASE : return $this->trailingEndPhase($token); break;

}

private function initPhase($token)

{

/* Initially, the tree construction stage must handle each token

emitted from the tokenisation stage as follows: */

/* A DOCTYPE token that is marked as being in error

A comment token

A start tag token

An end tag token

A character token that is not one of one of U+0009 CHARACTER TABULATION,

U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),

or U+0020 SPACE

An end-of-file token */

if((isset($token['error']) && $token['error']) ||

$token['type'] === HTML5::COMMENT ||

$token['type'] === HTML5::STARTTAG ||

$token['type'] === HTML5::ENDTAG ||

$token['type'] === HTML5::EOF ||

($token['type'] === HTML5::CHARACTR && isset($token['data']) &&

!preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data']))) {

/* This specification does not define how to handle this case. In

particular, user agents may ignore the entirety of this specification

altogether for such documents, and instead invoke special parse modes

with a greater emphasis on backwards compatibility. */

$this->phase = self::ROOT_PHASE;

return $this->rootElementPhase($token);

/* A DOCTYPE token marked as being correct */

} elseif(isset($token['error']) && !$token['error']) {

/* Append a DocumentType node to the Document  node, with the name

attribute set to the name given in the DOCTYPE token (which will be

"HTML"), and the other attributes specific to DocumentType objects

set to null, empty lists, or the empty string as appropriate. */

$doctype = new DOMDocumentType(null, null, 'HTML');

/* Then, switch to the root element phase of the tree construction

stage. */

$this->phase = self::ROOT_PHASE;

/* A character token that is one of one of U+0009 CHARACTER TABULATION,

U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),

or U+0020 SPACE */

} elseif(isset($token['data']) && preg_match('/^[\t\n\x0b\x0c ]+$/',

$token['data'])) {

/* Append that character  to the Document node. */

$text = $this->dom->createTextNode($token['data']);

$this->dom->appendChild($text);

}

private function rootElementPhase($token)

{

/* After the initial phase, as each token is emitted from the tokenisation

stage, it must be processed as described in this section. */

/* A DOCTYPE token */

if($token['type'] === HTML5::DOCTYPE) {

// Parse error. Ignore the token.

/* A comment token */

} elseif($token['type'] === HTML5::COMMENT) {

/* Append a Comment node to the Document object with the data

attribute set to the data given in the comment token. */

$comment = $this->dom->createComment($token['data']);

$this->dom->appendChild($comment);

/* A character token that is one of one of U+0009 CHARACTER TABULATION,

U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),

or U+0020 SPACE */

} elseif($token['type'] === HTML5::CHARACTR &&

preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {

/* Append that character  to the Document node. */

$text = $this->dom->createTextNode($token['data']);

$this->dom->appendChild($text);

/* A character token that is not one of U+0009 CHARACTER TABULATION,

U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED

(FF), or U+0020 SPACE

A start tag token

An end tag token

An end-of-file token */

} elseif(($token['type'] === HTML5::CHARACTR &&

!preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) ||

$token['type'] === HTML5::STARTTAG ||

$token['type'] === HTML5::ENDTAG ||

$token['type'] === HTML5::EOF) {

/* Create an HTMLElement node with the tag name html, in the HTML

namespace. Append it to the Document object. Switch to the main

phase and reprocess the current token. */

$html = $this->dom->createElement('html');

$this->dom->appendChild($html);

$this->stack[] = $html;

$this->phase = self::MAIN_PHASE;

return $this->mainPhase($token);

}

private function mainPhase($token)

{

/* Tokens in the main phase must be handled as follows: */

/* A DOCTYPE token */

if($token['type'] === HTML5::DOCTYPE) {

// Parse error. Ignore the token.

/* A start tag token with the tag name "html" */

} elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'html') {

/* If this start tag token was not the first start tag token, then

it is a parse error. */

/* For each attribute on the token, check to see if the attribute

is already present on the top element of the stack of open elements.

If it is not, add the attribute and its corresponding value to that

element. */

foreach($token['attr'] as $attr) {

if(!$this->stack[0]->hasAttribute($attr['name'])) {

$this->stack[0]->setAttribute($attr['name'], $attr['value']);

}

/* An end-of-file token */

} elseif($token['type'] === HTML5::EOF) {

/* Generate implied end tags. */

$this->generateImpliedEndTags();

/* Anything else. */

} else {

/* Depends on the insertion mode: */

switch($this->mode) {

case self::BEFOR_HEAD: return $this->beforeHead($token); break;

case self::IN_HEAD:    return $this->inHead($token); break;

case self::AFTER_HEAD: return $this->afterHead($token); break;

case self::IN_BODY:    return $this->inBody($token); break;

case self::IN_TABLE:   return $this->inTable($token); break;

case self::IN_CAPTION: return $this->inCaption($token); break;

case self::IN_CGROUP:  return $this->inColumnGroup($token); break;

case self::IN_TBODY:   return $this->inTableBody($token); break;

case self::IN_ROW:     return $this->inRow($token); break;

case self::IN_CELL:    return $this->inCell($token); break;

case self::IN_SELECT:  return $this->inSelect($token); break;

case self::AFTER_BODY: return $this->afterBody($token); break;

case self::IN_FRAME:   return $this->inFrameset($token); break;

case self::AFTR_FRAME: return $this->afterFrameset($token); break;

case self::END_PHASE:  return $this->trailingEndPhase($token); break;

}

private function beforeHead($token)

{

/* Handle the token as follows: */

/* A character token that is one of one of U+0009 CHARACTER TABULATION,

U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),

or U+0020 SPACE */

if($token['type'] === HTML5::CHARACTR &&

preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {

/* Append the character to the current node. */

$this->insertText($token['data']);

/* A comment token */

} elseif($token['type'] === HTML5::COMMENT) {

/* Append a Comment node to the current node with the data attribute

set to the data given in the comment token. */

$this->insertComment($token['data']);

/* A start tag token with the tag name "head" */

} elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'head') {

/* Create an element for the token, append the new element to the

current node and push it onto the stack of open elements. */

$element = $this->insertElement($token);

/* Set the head element pointer to this new element node. */

$this->head_pointer = $element;

/* Change the insertion mode to "in head". */

$this->mode = self::IN_HEAD;

/* A start tag token whose tag name is one of: "base", "link", "meta",

"script", "style", "title". Or an end tag with the tag name "html".

Or a character token that is not one of U+0009 CHARACTER TABULATION,

U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),

or U+0020 SPACE. Or any other start tag token */

} elseif($token['type'] === HTML5::STARTTAG ||

($token['type'] === HTML5::ENDTAG && $token['name'] === 'html') ||

($token['type'] === HTML5::CHARACTR && !preg_match('/^[\t\n\x0b\x0c ]$/',

$token['data']))) {

/* Act as if a start tag token with the tag name "head" and no

attributes had been seen, then reprocess the current token. */

$this->beforeHead(array(

'name' => 'head',

'type' => HTML5::STARTTAG,

'attr' => array()

));

return $this->inHead($token);

/* Any other end tag */

} elseif($token['type'] === HTML5::ENDTAG) {

/* Parse error. Ignore the token. */

}

private function inHead($token)

{

/* Handle the token as follows: */

/* A character token that is one of one of U+0009 CHARACTER TABULATION,

U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),

or U+0020 SPACE.

THIS DIFFERS FROM THE SPEC: If the current node is either a title, style

or script element, append the character to the current node regardless

of its content. */

if(($token['type'] === HTML5::CHARACTR &&

preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) || (

$token['type'] === HTML5::CHARACTR && in_array(end($this->stack)->nodeName,

array('title', 'style', 'script')))) {

/* Append the character to the current node. */

$this->insertText($token['data']);

/* A comment token */

} elseif($token['type'] === HTML5::COMMENT) {

/* Append a Comment node to the current node with the data attribute

set to the data given in the comment token. */

$this->insertComment($token['data']);

} elseif($token['type'] === HTML5::ENDTAG &&

in_array($token['name'], array('title', 'style', 'script'))) {

array_pop($this->stack);

return HTML5::PCDATA;

/* A start tag with the tag name "title" */

} elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'title') {

/* Create an element for the token and append the new element to the

node pointed to by the head element pointer, or, if that is null

(innerHTML case), to the current node. */

if($this->head_pointer !== null) {

$element = $this->insertElement($token, false);

$this->head_pointer->appendChild($element);

} else {

$element = $this->insertElement($token);

}

/* Switch the tokeniser's content model flag  to the RCDATA state. */

return HTML5::RCDATA;

/* A start tag with the tag name "style" */

} elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'style') {

/* Create an element for the token and append the new element to the

node pointed to by the head element pointer, or, if that is null

(innerHTML case), to the current node. */

if($this->head_pointer !== null) {

$element = $this->insertElement($token, false);

$this->head_pointer->appendChild($element);

} else {

$this->insertElement($token);

}

/* Switch the tokeniser's content model flag  to the CDATA state. */

return HTML5::CDATA;

/* A start tag with the tag name "script" */

} elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'script') {

/* Create an element for the token. */

$element = $this->insertElement($token, false);

$this->head_pointer->appendChild($element);

/* Switch the tokeniser's content model flag  to the CDATA state. */

return HTML5::CDATA;

/* A start tag with the tag name "base", "link", or "meta" */

} elseif($token['type'] === HTML5::STARTTAG && in_array($token['name'],

array('base', 'link', 'meta'))) {

/* Create an element for the token and append the new element to the

node pointed to by the head element pointer, or, if that is null

(innerHTML case), to the current node. */

if($this->head_pointer !== null) {

$element = $this->insertElement($token, false);

$this->head_pointer->appendChild($element);

array_pop($this->stack);

} else {

$this->insertElement($token);

}

/* An end tag with the tag name "head" */

} elseif($token['type'] === HTML5::ENDTAG && $token['name'] === 'head') {

/* If the current node is a head element, pop the current node off

the stack of open elements. */

if($this->head_pointer->isSameNode(end($this->stack))) {

array_pop($this->stack);

/* Otherwise, this is a parse error. */

} else {

// k

}

/* Change the insertion mode to "after head". */

$this->mode = self::AFTER_HEAD;

/* A start tag with the tag name "head" or an end tag except "html". */

} elseif(($token['type'] === HTML5::STARTTAG && $token['name'] === 'head') ||

($token['type'] === HTML5::ENDTAG && $token['name'] !== 'html')) {

// Parse error. Ignore the token.

/* Anything else */

} else {

/* If the current node is a head element, act as if an end tag

token with the tag name "head" had been seen. */

if($this->head_pointer->isSameNode(end($this->stack))) {

$this->inHead(array(

'name' => 'head',

'type' => HTML5::ENDTAG

));

/* Otherwise, change the insertion mode to "after head". */

} else {

$this->mode = self::AFTER_HEAD;

}

/* Then, reprocess the current token. */

return $this->afterHead($token);

}

private function afterHead($token)

{

/* Handle the token as follows: */

/* A character token that is one of one of U+0009 CHARACTER TABULATION,

U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),

or U+0020 SPACE */

if($token['type'] === HTML5::CHARACTR &&

preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {

/* Append the character to the current node. */

$this->insertText($token['data']);

/* A comment token */

} elseif($token['type'] === HTML5::COMMENT) {

/* Append a Comment node to the current node with the data attribute

set to the data given in the comment token. */

$this->insertComment($token['data']);

/* A start tag token with the tag name "body" */

} elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'body') {

/* Insert a body element for the token. */

$this->insertElement($token);

/* Change the insertion mode to "in body". */

$this->mode = self::IN_BODY;

/* A start tag token with the tag name "frameset" */

} elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'frameset') {

/* Insert a frameset element for the token. */

$this->insertElement($token);

/* Change the insertion mode to "in frameset". */

$this->mode = self::IN_FRAME;

/* A start tag token whose tag name is one of: "base", "link", "meta",

"script", "style", "title" */

} elseif($token['type'] === HTML5::STARTTAG && in_array($token['name'],

array('base', 'link', 'meta', 'script', 'style', 'title'))) {

/* Parse error. Switch the insertion mode back to "in head" and

reprocess the token. */

$this->mode = self::IN_HEAD;

return $this->inHead($token);

/* Anything else */

} else {

/* Act as if a start tag token with the tag name "body" and no

attributes had been seen, and then reprocess the current token. */

$this->afterHead(array(

'name' => 'body',

'type' => HTML5::STARTTAG,

'attr' => array()

));

return $this->inBody($token);

}

private function inBody($token)

{

/* Handle the token as follows: */

switch($token['type']) {

/* A character token */

case HTML5::CHARACTR:

/* Reconstruct the active formatting elements, if any. */

$this->reconstructActiveFormattingElements();

/* Append the token's character to the current node. */

$this->insertText($token['data']);

break;

/* A comment token */

case HTML5::COMMENT:

/* Append a Comment node to the current node with the data

attribute set to the data given in the comment token. */

$this->insertComment($token['data']);

break;

case HTML5::STARTTAG:

switch($token['name']) {

/* A start tag token whose tag name is one of: "script",

"style" */

case 'script': case 'style':

/* Process the token as if the insertion mode had been "in

head". */

return $this->inHead($token);

break;

/* A start tag token whose tag name is one of: "base", "link",

"meta", "title" */

case 'base': case 'link': case 'meta': case 'title':

/* Parse error. Process the token as if the insertion mode

had    been "in head". */

return $this->inHead($token);

break;

/* A start tag token with the tag name "body" */

case 'body':

/* Parse error. If the second element on the stack of open

elements is not a body element, or, if the stack of open

elements has only one node on it, then ignore the token.

(innerHTML case) */

if(count($this->stack) === 1 || $this->stack[1]->nodeName !== 'body') {

// Ignore

/* Otherwise, for each attribute on the token, check to see

if the attribute is already present on the body element (the

second element)    on the stack of open elements. If it is not,

add the attribute and its corresponding value to that

element. */

} else {

foreach($token['attr'] as $attr) {

if(!$this->stack[1]->hasAttribute($attr['name'])) {

$this->stack[1]->setAttribute($attr['name'], $attr['value']);

}

break;

/* A start tag whose tag name is one of: "address",

"blockquote", "center", "dir", "div", "dl", "fieldset",

"listing", "menu", "ol", "p", "ul" */

case 'address': case 'blockquote': case 'center': case 'dir':

case 'div': case 'dl': case 'fieldset': case 'listing':

case 'menu': case 'ol': case 'p': case 'ul':

/* If the stack of open elements has a p element in scope,

then act as if an end tag with the tag name p had been

seen. */

if($this->elementInScope('p')) {

$this->emitToken(array(

'name' => 'p',

'type' => HTML5::ENDTAG

));

}

/* Insert an HTML element for the token. */

$this->insertElement($token);

break;

/* A start tag whose tag name is "form" */

case 'form':

/* If the form element pointer is not null, ignore the

token with a parse error. */

if($this->form_pointer !== null) {

// Ignore.

/* Otherwise: */

} else {

/* If the stack of open elements has a p element in

scope, then act as if an end tag with the tag name p

had been seen. */

if($this->elementInScope('p')) {

$this->emitToken(array(

'name' => 'p',

'type' => HTML5::ENDTAG

));

}

/* Insert an HTML element for the token, and set the

form element pointer to point to the element created. */

$element = $this->insertElement($token);

$this->form_pointer = $element;

}

break;

/* A start tag whose tag name is "li", "dd" or "dt" */

case 'li': case 'dd': case 'dt':

/* If the stack of open elements has a p  element in scope,

then act as if an end tag with the tag name p had been

seen. */

if($this->elementInScope('p')) {

$this->emitToken(array(

'name' => 'p',

'type' => HTML5::ENDTAG

));

}

$stack_length = count($this->stack) - 1;

for($n = $stack_length; 0 <= $n; $n--) {

/* 1. Initialise node to be the current node (the

bottommost node of the stack). */

$stop = false;

$node = $this->stack[$n];

$cat  = $this->getElementCategory($node->tagName);

/* 2. If node is an li, dd or dt element, then pop all

the    nodes from the current node up to node, including

node, then stop this algorithm. */

if($token['name'] === $node->tagName ||    ($token['name'] !== 'li'

&& ($node->tagName === 'dd' || $node->tagName === 'dt'))) {

for($x = $stack_length; $x >= $n ; $x--) {

array_pop($this->stack);

}

break;

}

/* 3. If node is not in the formatting category, and is

not    in the phrasing category, and is not an address or

div element, then stop this algorithm. */

if($cat !== self::FORMATTING && $cat !== self::PHRASING &&

$node->tagName !== 'address' && $node->tagName !== 'div') {

break;

}

/* Finally, insert an HTML element with the same tag

name as the    token's. */

$this->insertElement($token);

break;

/* A start tag token whose tag name is "plaintext" */

case 'plaintext':

/* If the stack of open elements has a p  element in scope,

then act as if an end tag with the tag name p had been

seen. */

if($this->elementInScope('p')) {

$this->emitToken(array(

'name' => 'p',

'type' => HTML5::ENDTAG

));

}

/* Insert an HTML element for the token. */

$this->insertElement($token);

return HTML5::PLAINTEXT;

break;

/* A start tag whose tag name is one of: "h1", "h2", "h3", "h4",

"h5", "h6" */

case 'h1': case 'h2': case 'h3': case 'h4': case 'h5': case 'h6':

/* If the stack of open elements has a p  element in scope,

then act as if an end tag with the tag name p had been seen. */

if($this->elementInScope('p')) {

$this->emitToken(array(

'name' => 'p',

'type' => HTML5::ENDTAG

));

}

/* If the stack of open elements has in scope an element whose

tag name is one of "h1", "h2", "h3", "h4", "h5", or "h6", then

this is a parse error; pop elements from the stack until an

element with one of those tag names has been popped from the

stack. */

while($this->elementInScope(array('h1', 'h2', 'h3', 'h4', 'h5', 'h6'))) {

array_pop($this->stack);

}

/* Insert an HTML element for the token. */

$this->insertElement($token);

break;

/* A start tag whose tag name is "a" */

case 'a':

/* If the list of active formatting elements contains

an element whose tag name is "a" between the end of the

list and the last marker on the list (or the start of

the list if there is no marker on the list), then this

is a parse error; act as if an end tag with the tag name

"a" had been seen, then remove that element from the list

of active formatting elements and the stack of open

elements if the end tag didn't already remove it (it

might not have if the element is not in table scope). */

$leng = count($this->a_formatting);

for($n = $leng - 1; $n >= 0; $n--) {

if($this->a_formatting[$n] === self::MARKER) {

break;

} elseif($this->a_formatting[$n]->nodeName === 'a') {

$this->emitToken(array(

'name' => 'a',

'type' => HTML5::ENDTAG

));

break;

}

/* Reconstruct the active formatting elements, if any. */

$this->reconstructActiveFormattingElements();

/* Insert an HTML element for the token. */

$el = $this->insertElement($token);

/* Add that element to the list of active formatting

elements. */

$this->a_formatting[] = $el;

break;

/* A start tag whose tag name is one of: "b", "big", "em", "font",

"i", "nobr", "s", "small", "strike", "strong", "tt", "u" */

case 'b': case 'big': case 'em': case 'font': case 'i':

case 'nobr': case 's': case 'small': case 'strike':

case 'strong': case 'tt': case 'u':

/* Reconstruct the active formatting elements, if any. */

$this->reconstructActiveFormattingElements();

/* Insert an HTML element for the token. */

$el = $this->insertElement($token);

/* Add that element to the list of active formatting

elements. */

$this->a_formatting[] = $el;

break;

/* A start tag token whose tag name is "button" */

case 'button':

/* If the stack of open elements has a button element in scope,

then this is a parse error; act as if an end tag with the tag

name "button" had been seen, then reprocess the token. (We don't

do that. Unnecessary.) */

if($this->elementInScope('button')) {

$this->inBody(array(

'name' => 'button',

'type' => HTML5::ENDTAG

));

}

/* Reconstruct the active formatting elements, if any. */

$this->reconstructActiveFormattingElements();

/* Insert an HTML element for the token. */

$this->insertElement($token);

/* Insert a marker at the end of the list of active

formatting elements. */

$this->a_formatting[] = self::MARKER;

break;

/* A start tag token whose tag name is one of: "marquee", "object" */

case 'marquee': case 'object':

/* Reconstruct the active formatting elements, if any. */

$this->reconstructActiveFormattingElements();

/* Insert an HTML element for the token. */

$this->insertElement($token);

/* Insert a marker at the end of the list of active

formatting elements. */

$this->a_formatting[] = self::MARKER;

break;

/* A start tag token whose tag name is "xmp" */

case 'xmp':

/* Reconstruct the active formatting elements, if any. */

$this->reconstructActiveFormattingElements();

/* Insert an HTML element for the token. */

$this->insertElement($token);

/* Switch the content model flag to the CDATA state. */

return HTML5::CDATA;

break;

/* A start tag whose tag name is "table" */

case 'table':

/* If the stack of open elements has a p element in scope,

then act as if an end tag with the tag name p had been seen. */

if($this->elementInScope('p')) {

$this->emitToken(array(

'name' => 'p',

'type' => HTML5::ENDTAG

));

}

/* Insert an HTML element for the token. */

$this->insertElement($token);

/* Change the insertion mode to "in table". */

$this->mode = self::IN_TABLE;

break;

/* A start tag whose tag name is one of: "area", "basefont",

"bgsound", "br", "embed", "img", "param", "spacer", "wbr" */

case 'area': case 'basefont': case 'bgsound': case 'br':

case 'embed': case 'img': case 'param': case 'spacer':

case 'wbr':

/* Reconstruct the active formatting elements, if any. */

$this->reconstructActiveFormattingElements();

/* Insert an HTML element for the token. */

$this->insertElement($token);

/* Immediately pop the current node off the stack of open elements. */

array_pop($this->stack);

break;

/* A start tag whose tag name is "hr" */

case 'hr':

/* If the stack of open elements has a p element in scope,

then act as if an end tag with the tag name p had been seen. */

if($this->elementInScope('p')) {

$this->emitToken(array(

'name' => 'p',

'type' => HTML5::ENDTAG

));

}

/* Insert an HTML element for the token. */

$this->insertElement($token);

/* Immediately pop the current node off the stack of open elements. */

array_pop($this->stack);

break;

/* A start tag whose tag name is "image" */

case 'image':

/* Parse error. Change the token's tag name to "img" and

reprocess it. (Don't ask.) */

$token['name'] = 'img';

return $this->inBody($token);

break;

/* A start tag whose tag name is "input" */

case 'input':

/* Reconstruct the active formatting elements, if any. */

$this->reconstructActiveFormattingElements();

/* Insert an input element for the token. */

$element = $this->insertElement($token, false);

/* If the form element pointer is not null, then associate the

input element with the form element pointed to by the form

element pointer. */

$this->form_pointer !== null

? $this->form_pointer->appendChild($element)

: end($this->stack)->appendChild($element);

/* Pop that input element off the stack of open elements. */

array_pop($this->stack);

break;

/* A start tag whose tag name is "isindex" */

case 'isindex':

/* Parse error. */

// w/e

/* If the form element pointer is not null,

then ignore the token. */

if($this->form_pointer === null) {

/* Act as if a start tag token with the tag name "form" had

been seen. */

$this->inBody(array(

'name' => 'body',

'type' => HTML5::STARTTAG,

'attr' => array()

));

/* Act as if a start tag token with the tag name "hr" had

been seen. */

$this->inBody(array(

'name' => 'hr',

'type' => HTML5::STARTTAG,

'attr' => array()

));

/* Act as if a start tag token with the tag name "p" had

been seen. */

$this->inBody(array(

'name' => 'p',

'type' => HTML5::STARTTAG,

'attr' => array()

));

/* Act as if a start tag token with the tag name "label"

had been seen. */

$this->inBody(array(

'name' => 'label',

'type' => HTML5::STARTTAG,

'attr' => array()

));

/* Act as if a stream of character tokens had been seen. */

$this->insertText('This is a searchable index. '.

'Insert your search keywords here: ');

/* Act as if a start tag token with the tag name "input"

had been seen, with all the attributes from the "isindex"

token, except with the "name" attribute set to the value

"isindex" (ignoring any explicit "name" attribute). */

$attr = $token['attr'];

$attr[] = array('name' => 'name', 'value' => 'isindex');

$this->inBody(array(

'name' => 'input',

'type' => HTML5::STARTTAG,

'attr' => $attr

));

/* Act as if a stream of character tokens had been seen

(see below for what they should say). */

$this->insertText('This is a searchable index. '.

'Insert your search keywords here: ');

/* Act as if an end tag token with the tag name "label"

had been seen. */

$this->inBody(array(

'name' => 'label',

'type' => HTML5::ENDTAG

));

/* Act as if an end tag token with the tag name "p" had

been seen. */

$this->inBody(array(

'name' => 'p',

'type' => HTML5::ENDTAG

));

/* Act as if a start tag token with the tag name "hr" had

been seen. */

$this->inBody(array(

'name' => 'hr',

'type' => HTML5::ENDTAG

));

/* Act as if an end tag token with the tag name "form" had

been seen. */

$this->inBody(array(

'name' => 'form',

'type' => HTML5::ENDTAG

));

}

break;

/* A start tag whose tag name is "textarea" */

case 'textarea':

$this->insertElement($token);

/* Switch the tokeniser's content model flag to the

RCDATA state. */

return HTML5::RCDATA;

break;

/* A start tag whose tag name is one of: "iframe", "noembed",

"noframes" */

case 'iframe': case 'noembed': case 'noframes':

$this->insertElement($token);

/* Switch the tokeniser's content model flag to the CDATA state. */

return HTML5::CDATA;

break;

/* A start tag whose tag name is "select" */

case 'select':

/* Reconstruct the active formatting elements, if any. */

$this->reconstructActiveFormattingElements();

/* Insert an HTML element for the token. */

$this->insertElement($token);

/* Change the insertion mode to "in select". */

$this->mode = self::IN_SELECT;

break;

/* A start or end tag whose tag name is one of: "caption", "col",

"colgroup", "frame", "frameset", "head", "option", "optgroup",

"tbody", "td", "tfoot", "th", "thead", "tr". */

case 'caption': case 'col': case 'colgroup': case 'frame':

case 'frameset': case 'head': case 'option': case 'optgroup':

case 'tbody': case 'td': case 'tfoot': case 'th': case 'thead':

case 'tr':

// Parse error. Ignore the token.

break;

/* A start or end tag whose tag name is one of: "event-source",

"section", "nav", "article", "aside", "header", "footer",

"datagrid", "command" */

case 'event-source': case 'section': case 'nav': case 'article':

case 'aside': case 'header': case 'footer': case 'datagrid':

case 'command':

// Work in progress!

break;

/* A start tag token not covered by the previous entries */

default:

/* Reconstruct the active formatting elements, if any. */

$this->reconstructActiveFormattingElements();

$this->insertElement($token);

break;

}

break;

case HTML5::ENDTAG:

switch($token['name']) {

/* An end tag with the tag name "body" */

case 'body':

/* If the second element in the stack of open elements is

not a body element, this is a parse error. Ignore the token.

(innerHTML case) */

if(count($this->stack) < 2 || $this->stack[1]->nodeName !== 'body') {

// Ignore.

/* If the current node is not the body element, then this

is a parse error. */

} elseif(end($this->stack)->nodeName !== 'body') {

// Parse error.

}

/* Change the insertion mode to "after body". */

$this->mode = self::AFTER_BODY;

break;

/* An end tag with the tag name "html" */

case 'html':

/* Act as if an end tag with tag name "body" had been seen,

then, if that token wasn't ignored, reprocess the current

token. */

$this->inBody(array(

'name' => 'body',

'type' => HTML5::ENDTAG

));

return $this->afterBody($token);

break;

/* An end tag whose tag name is one of: "address", "blockquote",

"center", "dir", "div", "dl", "fieldset", "listing", "menu",

"ol", "pre", "ul" */

case 'address': case 'blockquote': case 'center': case 'dir':

case 'div': case 'dl': case 'fieldset': case 'listing':

case 'menu': case 'ol': case 'pre': case 'ul':

/* If the stack of open elements has an element in scope

with the same tag name as that of the token, then generate

implied end tags. */

if($this->elementInScope($token['name'])) {

$this->generateImpliedEndTags();

/* Now, if the current node is not an element with

the same tag name as that of the token, then this

is a parse error. */

// w/e

/* If the stack of open elements has an element in

scope with the same tag name as that of the token,

then pop elements from this stack until an element

with that tag name has been popped from the stack. */

for($n = count($this->stack) - 1; $n >= 0; $n--) {

if($this->stack[$n]->nodeName === $token['name']) {

$n = -1;

}

array_pop($this->stack);

}

break;

/* An end tag whose tag name is "form" */

case 'form':

/* If the stack of open elements has an element in scope

with the same tag name as that of the token, then generate

implied    end tags. */

if($this->elementInScope($token['name'])) {

$this->generateImpliedEndTags();

}

if(end($this->stack)->nodeName !== $token['name']) {

/* Now, if the current node is not an element with the

same tag name as that of the token, then this is a parse

error. */

// w/e

} else {

/* Otherwise, if the current node is an element with

the same tag name as that of the token pop that element

from the stack. */

array_pop($this->stack);

}

/* In any case, set the form element pointer to null. */

$this->form_pointer = null;

break;

/* An end tag whose tag name is "p" */

case 'p':

/* If the stack of open elements has a p element in scope,

then generate implied end tags, except for p elements. */

if($this->elementInScope('p')) {

$this->generateImpliedEndTags(array('p'));

/* If the current node is not a p element, then this is

a parse error. */

// k

/* If the stack of open elements has a p element in

scope, then pop elements from this stack until the stack

no longer has a p element in scope. */

for($n = count($this->stack) - 1; $n >= 0; $n--) {

if($this->elementInScope('p')) {

array_pop($this->stack);

} else {

break;

}

break;

/* An end tag whose tag name is "dd", "dt", or "li" */

case 'dd': case 'dt': case 'li':

/* If the stack of open elements has an element in scope

whose tag name matches the tag name of the token, then

generate implied end tags, except for elements with the

same tag name as the token. */

if($this->elementInScope($token['name'])) {

$this->generateImpliedEndTags(array($token['name']));

/* If the current node is not an element with the same

tag name as the token, then this is a parse error. */

// w/e

/* If the stack of open elements has an element in scope

whose tag name matches the tag name of the token, then

pop elements from this stack until an element with that

tag name has been popped from the stack. */

for($n = count($this->stack) - 1; $n >= 0; $n--) {

if($this->stack[$n]->nodeName === $token['name']) {

$n = -1;

}

array_pop($this->stack);

}

break;

/* An end tag whose tag name is one of: "h1", "h2", "h3", "h4",

"h5", "h6" */

case 'h1': case 'h2': case 'h3': case 'h4': case 'h5': case 'h6':

$elements = array('h1', 'h2', 'h3', 'h4', 'h5', 'h6');

/* If the stack of open elements has in scope an element whose

tag name is one of "h1", "h2", "h3", "h4", "h5", or "h6", then

generate implied end tags. */

if($this->elementInScope($elements)) {

$this->generateImpliedEndTags();

/* Now, if the current node is not an element with the same

tag name as that of the token, then this is a parse error. */

// w/e

/* If the stack of open elements has in scope an element

whose tag name is one of "h1", "h2", "h3", "h4", "h5", or

"h6", then pop elements from the stack until an element

with one of those tag names has been popped from the stack. */

while($this->elementInScope($elements)) {

array_pop($this->stack);

}

break;

/* An end tag whose tag name is one of: "a", "b", "big", "em",

"font", "i", "nobr", "s", "small", "strike", "strong", "tt", "u" */

case 'a': case 'b': case 'big': case 'em': case 'font':

case 'i': case 'nobr': case 's': case 'small': case 'strike':

case 'strong': case 'tt': case 'u':

/* 1. Let the formatting element be the last element in

the list of active formatting elements that:

* is between the end of the list and the last scope

marker in the list, if any, or the start of the list

otherwise, and

* has the same tag name as the token.

while(true) {

for($a = count($this->a_formatting) - 1; $a >= 0; $a--) {

if($this->a_formatting[$a] === self::MARKER) {

break;

} elseif($this->a_formatting[$a]->tagName === $token['name']) {

$formatting_element = $this->a_formatting[$a];

$in_stack = in_array($formatting_element, $this->stack, true);

$fe_af_pos = $a;

break;

}

/* If there is no such node, or, if that node is

also in the stack of open elements but the element

is not in scope, then this is a parse error. Abort

these steps. The token is ignored. */

if(!isset($formatting_element) || ($in_stack &&

!$this->elementInScope($token['name']))) {

break;

/* Otherwise, if there is such a node, but that node

is not in the stack of open elements, then this is a

parse error; remove the element from the list, and

abort these steps. */

} elseif(isset($formatting_element) && !$in_stack) {

unset($this->a_formatting[$fe_af_pos]);

$this->a_formatting = array_merge($this->a_formatting);

break;

}

/* 2. Let the furthest block be the topmost node in the

stack of open elements that is lower in the stack

than the formatting element, and is not an element in

the phrasing or formatting categories. There might

not be one. */

$fe_s_pos = array_search($formatting_element, $this->stack, true);

$length = count($this->stack);

for($s = $fe_s_pos + 1; $s < $length; $s++) {

$category = $this->getElementCategory($this->stack[$s]->nodeName);

if($category !== self::PHRASING && $category !== self::FORMATTING) {

$furthest_block = $this->stack[$s];

}

/* 3. If there is no furthest block, then the UA must

skip the subsequent steps and instead just pop all

the nodes from the bottom of the stack of open

elements, from the current node up to the formatting

element, and remove the formatting element from the

list of active formatting elements. */

if(!isset($furthest_block)) {

for($n = $length - 1; $n >= $fe_s_pos; $n--) {

array_pop($this->stack);

}

unset($this->a_formatting[$fe_af_pos]);

$this->a_formatting = array_merge($this->a_formatting);

break;

}

/* 4. Let the common ancestor be the element

immediately above the formatting element in the stack

of open elements. */

$common_ancestor = $this->stack[$fe_s_pos - 1];

/* 5. If the furthest block has a parent node, then

remove the furthest block from its parent node. */

if($furthest_block->parentNode !== null) {

$furthest_block->parentNode->removeChild($furthest_block);

}

/* 6. Let a bookmark note the position of the

formatting element in the list of active formatting

elements relative to the elements on either side

of it in the list. */

$bookmark = $fe_af_pos;

/* 7. Let node and last node  be the furthest block.

Follow these steps: */

$node = $furthest_block;

$last_node = $furthest_block;

while(true) {

for($n = array_search($node, $this->stack, true) - 1; $n >= 0; $n--) {

/* 7.1 Let node be the element immediately

prior to node in the stack of open elements. */

$node = $this->stack[$n];

/* 7.2 If node is not in the list of active

formatting elements, then remove node from

the stack of open elements and then go back

to step 1. */

if(!in_array($node, $this->a_formatting, true)) {

unset($this->stack[$n]);

$this->stack = array_merge($this->stack);

} else {

break;

}

/* 7.3 Otherwise, if node is the formatting

element, then go to the next step in the overall

algorithm. */

if($node === $formatting_element) {

break;

/* 7.4 Otherwise, if last node is the furthest

block, then move the aforementioned bookmark to

be immediately after the node in the list of

active formatting elements. */

} elseif($last_node === $furthest_block) {

$bookmark = array_search($node, $this->a_formatting, true) + 1;

}

/* 7.5 If node has any children, perform a

shallow clone of node, replace the entry for

node in the list of active formatting elements

with an entry for the clone, replace the entry

for node in the stack of open elements with an

entry for the clone, and let node be the clone. */

if($node->hasChildNodes()) {

$clone = $node->cloneNode();

$s_pos = array_search($node, $this->stack, true);

$a_pos = array_search($node, $this->a_formatting, true);

$this->stack[$s_pos] = $clone;

$this->a_formatting[$a_pos] = $clone;

$node = $clone;

}

/* 7.6 Insert last node into node, first removing

it from its previous parent node if any. */

if($last_node->parentNode !== null) {

$last_node->parentNode->removeChild($last_node);

}

$node->appendChild($last_node);

/* 7.7 Let last node be node. */

$last_node = $node;

}

/* 8. Insert whatever last node ended up being in

the previous step into the common ancestor node,

first removing it from its previous parent node if

any. */

if($last_node->parentNode !== null) {

$last_node->parentNode->removeChild($last_node);

}

$common_ancestor->appendChild($last_node);

/* 9. Perform a shallow clone of the formatting

element. */

$clone = $formatting_element->cloneNode();

/* 10. Take all of the child nodes of the furthest

block and append them to the clone created in the

last step. */

while($furthest_block->hasChildNodes()) {

$child = $furthest_block->firstChild;

$furthest_block->removeChild($child);

$clone->appendChild($child);

}

/* 11. Append that clone to the furthest block. */

$furthest_block->appendChild($clone);

/* 12. Remove the formatting element from the list

of active formatting elements, and insert the clone

into the list of active formatting elements at the

position of the aforementioned bookmark. */

$fe_af_pos = array_search($formatting_element, $this->a_formatting, true);

unset($this->a_formatting[$fe_af_pos]);

$this->a_formatting = array_merge($this->a_formatting);

$af_part1 = array_slice($this->a_formatting, 0, $bookmark - 1);

$af_part2 = array_slice($this->a_formatting, $bookmark, count($this->a_formatting));

$this->a_formatting = array_merge($af_part1, array($clone), $af_part2);

/* 13. Remove the formatting element from the stack

of open elements, and insert the clone into the stack

of open elements immediately after (i.e. in a more

deeply nested position than) the position of the

furthest block in that stack. */

$fe_s_pos = array_search($formatting_element, $this->stack, true);

$fb_s_pos = array_search($furthest_block, $this->stack, true);

unset($this->stack[$fe_s_pos]);

$s_part1 = array_slice($this->stack, 0, $fb_s_pos);

$s_part2 = array_slice($this->stack, $fb_s_pos + 1, count($this->stack));

$this->stack = array_merge($s_part1, array($clone), $s_part2);

/* 14. Jump back to step 1 in this series of steps. */

unset($formatting_element, $fe_af_pos, $fe_s_pos, $furthest_block);

}

break;

/* An end tag token whose tag name is one of: "button",

"marquee", "object" */

case 'button': case 'marquee': case 'object':

/* If the stack of open elements has an element in scope whose

tag name matches the tag name of the token, then generate implied

tags. */

if($this->elementInScope($token['name'])) {

$this->generateImpliedEndTags();

/* Now, if the current node is not an element with the same

tag name as the token, then this is a parse error. */

// k

/* Now, if the stack of open elements has an element in scope

whose tag name matches the tag name of the token, then pop

elements from the stack until that element has been popped from

the stack, and clear the list of active formatting elements up

to the last marker. */

for($n = count($this->stack) - 1; $n >= 0; $n--) {

if($this->stack[$n]->nodeName === $token['name']) {

$n = -1;

}

array_pop($this->stack);

}

$marker = end(array_keys($this->a_formatting, self::MARKER, true));

for($n = count($this->a_formatting) - 1; $n > $marker; $n--) {

array_pop($this->a_formatting);

}

break;

/* Or an end tag whose tag name is one of: "area", "basefont",

"bgsound", "br", "embed", "hr", "iframe", "image", "img",

"input", "isindex", "noembed", "noframes", "param", "select",

"spacer", "table", "textarea", "wbr" */

case 'area': case 'basefont': case 'bgsound': case 'br':

case 'embed': case 'hr': case 'iframe': case 'image':

case 'img': case 'input': case 'isindex': case 'noembed':

case 'noframes': case 'param': case 'select': case 'spacer':

case 'table': case 'textarea': case 'wbr':

// Parse error. Ignore the token.

break;

/* An end tag token not covered by the previous entries */

default:

for($n = count($this->stack) - 1; $n >= 0; $n--) {

/* Initialise node to be the current node (the bottommost

node of the stack). */

$node = end($this->stack);

/* If node has the same tag name as the end tag token,

then: */

if($token['name'] === $node->nodeName) {

/* Generate implied end tags. */

$this->generateImpliedEndTags();

/* If the tag name of the end tag token does not

match the tag name of the current node, this is a

parse error. */

// k

/* Pop all the nodes from the current node up to

node, including node, then stop this algorithm. */

for($x = count($this->stack) - $n; $x >= $n; $x--) {

array_pop($this->stack);

}

} else {

$category = $this->getElementCategory($node);

if($category !== self::SPECIAL && $category !== self::SCOPING) {

/* Otherwise, if node is in neither the formatting

category nor the phrasing category, then this is a

parse error. Stop this algorithm. The end tag token

is ignored. */

return false;

}

break;

}

break;

}

private function inTable($token)

{

$clear = array('html', 'table');

/* A character token that is one of one of U+0009 CHARACTER TABULATION,

U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),

or U+0020 SPACE */

if($token['type'] === HTML5::CHARACTR &&

preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {

/* Append the character to the current node. */

$text = $this->dom->createTextNode($token['data']);

end($this->stack)->appendChild($text);

/* A comment token */

} elseif($token['type'] === HTML5::COMMENT) {

/* Append a Comment node to the current node with the data

attribute set to the data given in the comment token. */

$comment = $this->dom->createComment($token['data']);

end($this->stack)->appendChild($comment);

/* A start tag whose tag name is "caption" */

} elseif($token['type'] === HTML5::STARTTAG &&

$token['name'] === 'caption') {

/* Clear the stack back to a table context. */

$this->clearStackToTableContext($clear);

/* Insert a marker at the end of the list of active

formatting elements. */

$this->a_formatting[] = self::MARKER;

/* Insert an HTML element for the token, then switch the

insertion mode to "in caption". */

$this->insertElement($token);

$this->mode = self::IN_CAPTION;

/* A start tag whose tag name is "colgroup" */

} elseif($token['type'] === HTML5::STARTTAG &&

$token['name'] === 'colgroup') {

/* Clear the stack back to a table context. */

$this->clearStackToTableContext($clear);

/* Insert an HTML element for the token, then switch the

insertion mode to "in column group". */

$this->insertElement($token);

$this->mode = self::IN_CGROUP;

/* A start tag whose tag name is "col" */

} elseif($token['type'] === HTML5::STARTTAG &&

$token['name'] === 'col') {

$this->inTable(array(

'name' => 'colgroup',

'type' => HTML5::STARTTAG,

'attr' => array()

));

$this->inColumnGroup($token);

/* A start tag whose tag name is one of: "tbody", "tfoot", "thead" */

} elseif($token['type'] === HTML5::STARTTAG && in_array($token['name'],

array('tbody', 'tfoot', 'thead'))) {

/* Clear the stack back to a table context. */

$this->clearStackToTableContext($clear);

/* Insert an HTML element for the token, then switch the insertion

mode to "in table body". */

$this->insertElement($token);

$this->mode = self::IN_TBODY;

/* A start tag whose tag name is one of: "td", "th", "tr" */

} elseif($token['type'] === HTML5::STARTTAG &&

in_array($token['name'], array('td', 'th', 'tr'))) {

/* Act as if a start tag token with the tag name "tbody" had been

seen, then reprocess the current token. */

$this->inTable(array(

'name' => 'tbody',

'type' => HTML5::STARTTAG,

'attr' => array()

));

return $this->inTableBody($token);

/* A start tag whose tag name is "table" */

} elseif($token['type'] === HTML5::STARTTAG &&

$token['name'] === 'table') {

/* Parse error. Act as if an end tag token with the tag name "table"

had been seen, then, if that token wasn't ignored, reprocess the

current token. */

$this->inTable(array(

'name' => 'table',

'type' => HTML5::ENDTAG

));

return $this->mainPhase($token);

/* An end tag whose tag name is "table" */

} elseif($token['type'] === HTML5::ENDTAG &&

$token['name'] === 'table') {

/* If the stack of open elements does not have an element in table

scope with the same tag name as the token, this is a parse error.

Ignore the token. (innerHTML case) */

if(!$this->elementInScope($token['name'], true)) {

return false;

/* Otherwise: */

} else {

/* Generate implied end tags. */

$this->generateImpliedEndTags();

/* Now, if the current node is not a table element, then this

is a parse error. */

// w/e

/* Pop elements from this stack until a table element has been

popped from the stack. */

while(true) {

$current = end($this->stack)->nodeName;

array_pop($this->stack);

if($current === 'table') {

break;

}

/* Reset the insertion mode appropriately. */

$this->resetInsertionMode();

}

/* An end tag whose tag name is one of: "body", "caption", "col",

"colgroup", "html", "tbody", "td", "tfoot", "th", "thead", "tr" */

} elseif($token['type'] === HTML5::ENDTAG && in_array($token['name'],

array('body', 'caption', 'col', 'colgroup', 'html', 'tbody', 'td',

'tfoot', 'th', 'thead', 'tr'))) {

// Parse error. Ignore the token.

/* Anything else */

} else {

/* Parse error. Process the token as if the insertion mode was "in

body", with the following exception: */

/* If the current node is a table, tbody, tfoot, thead, or tr

element, then, whenever a node would be inserted into the current

node, it must instead be inserted into the foster parent element. */

if(in_array(end($this->stack)->nodeName,

array('table', 'tbody', 'tfoot', 'thead', 'tr'))) {

/* The foster parent element is the parent element of the last

table element in the stack of open elements, if there is a

table element and it has such a parent element. If there is no

table element in the stack of open elements (innerHTML case),

then the foster parent element is the first element in the

stack of open elements (the html  element). Otherwise, if there

is a table element in the stack of open elements, but the last

table element in the stack of open elements has no parent, or

its parent node is not an element, then the foster parent

element is the element before the last table element in the

stack of open elements. */

for($n = count($this->stack) - 1; $n >= 0; $n--) {

if($this->stack[$n]->nodeName === 'table') {

$table = $this->stack[$n];

break;

}

if(isset($table) && $table->parentNode !== null) {

$this->foster_parent = $table->parentNode;

} elseif(!isset($table)) {

$this->foster_parent = $this->stack[0];

} elseif(isset($table) && ($table->parentNode === null ||

$table->parentNode->nodeType !== XML_ELEMENT_NODE)) {

$this->foster_parent = $this->stack[$n - 1];

}

$this->inBody($token);

}

private function inCaption($token)

{

/* An end tag whose tag name is "caption" */

if($token['type'] === HTML5::ENDTAG && $token['name'] === 'caption') {

/* If the stack of open elements does not have an element in table

scope with the same tag name as the token, this is a parse error.

Ignore the token. (innerHTML case) */

if(!$this->elementInScope($token['name'], true)) {

// Ignore

/* Otherwise: */

} else {

/* Generate implied end tags. */

$this->generateImpliedEndTags();

/* Now, if the current node is not a caption element, then this

is a parse error. */

// w/e

/* Pop elements from this stack until a caption element has

been popped from the stack. */

while(true) {

$node = end($this->stack)->nodeName;

array_pop($this->stack);

if($node === 'caption') {

break;

}

/* Clear the list of active formatting elements up to the last

marker. */

$this->clearTheActiveFormattingElementsUpToTheLastMarker();

/* Switch the insertion mode to "in table". */

$this->mode = self::IN_TABLE;

}

/* A start tag whose tag name is one of: "caption", "col", "colgroup",

"tbody", "td", "tfoot", "th", "thead", "tr", or an end tag whose tag

name is "table" */

} elseif(($token['type'] === HTML5::STARTTAG && in_array($token['name'],

array('caption', 'col', 'colgroup', 'tbody', 'td', 'tfoot', 'th',

'thead', 'tr'))) || ($token['type'] === HTML5::ENDTAG &&

$token['name'] === 'table')) {

/* Parse error. Act as if an end tag with the tag name "caption"

had been seen, then, if that token wasn't ignored, reprocess the

current token. */

$this->inCaption(array(

'name' => 'caption',

'type' => HTML5::ENDTAG

));

return $this->inTable($token);

/* An end tag whose tag name is one of: "body", "col", "colgroup",

"html", "tbody", "td", "tfoot", "th", "thead", "tr" */

} elseif($token['type'] === HTML5::ENDTAG && in_array($token['name'],

array('body', 'col', 'colgroup', 'html', 'tbody', 'tfoot', 'th',

'thead', 'tr'))) {

// Parse error. Ignore the token.

/* Anything else */

} else {

/* Process the token as if the insertion mode was "in body". */

$this->inBody($token);

}

private function inColumnGroup($token)

{

/* A character token that is one of one of U+0009 CHARACTER TABULATION,

U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),

or U+0020 SPACE */

if($token['type'] === HTML5::CHARACTR &&

preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {

/* Append the character to the current node. */

$text = $this->dom->createTextNode($token['data']);

end($this->stack)->appendChild($text);

/* A comment token */

} elseif($token['type'] === HTML5::COMMENT) {

/* Append a Comment node to the current node with the data

attribute set to the data given in the comment token. */

$comment = $this->dom->createComment($token['data']);

end($this->stack)->appendChild($comment);

/* A start tag whose tag name is "col" */

} elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'col') {

/* Insert a col element for the token. Immediately pop the current

node off the stack of open elements. */

$this->insertElement($token);

array_pop($this->stack);

/* An end tag whose tag name is "colgroup" */

} elseif($token['type'] === HTML5::ENDTAG &&

$token['name'] === 'colgroup') {

/* If the current node is the root html element, then this is a

parse error, ignore the token. (innerHTML case) */

if(end($this->stack)->nodeName === 'html') {

// Ignore

/* Otherwise, pop the current node (which will be a colgroup

element) from the stack of open elements. Switch the insertion

mode to "in table". */

} else {

array_pop($this->stack);

$this->mode = self::IN_TABLE;

}

/* An end tag whose tag name is "col" */

} elseif($token['type'] === HTML5::ENDTAG && $token['name'] === 'col') {

/* Parse error. Ignore the token. */

/* Anything else */

} else {

/* Act as if an end tag with the tag name "colgroup" had been seen,

and then, if that token wasn't ignored, reprocess the current token. */

$this->inColumnGroup(array(

'name' => 'colgroup',

'type' => HTML5::ENDTAG

));

return $this->inTable($token);

}

private function inTableBody($token)

{

$clear = array('tbody', 'tfoot', 'thead', 'html');

/* A start tag whose tag name is "tr" */

if($token['type'] === HTML5::STARTTAG && $token['name'] === 'tr') {

/* Clear the stack back to a table body context. */

$this->clearStackToTableContext($clear);

/* Insert a tr element for the token, then switch the insertion

mode to "in row". */

$this->insertElement($token);

$this->mode = self::IN_ROW;

/* A start tag whose tag name is one of: "th", "td" */

} elseif($token['type'] === HTML5::STARTTAG &&

($token['name'] === 'th' ||    $token['name'] === 'td')) {

/* Parse error. Act as if a start tag with the tag name "tr" had

been seen, then reprocess the current token. */

$this->inTableBody(array(

'name' => 'tr',

'type' => HTML5::STARTTAG,

'attr' => array()

));

return $this->inRow($token);

/* An end tag whose tag name is one of: "tbody", "tfoot", "thead" */

} elseif($token['type'] === HTML5::ENDTAG &&

in_array($token['name'], array('tbody', 'tfoot', 'thead'))) {

/* If the stack of open elements does not have an element in table

scope with the same tag name as the token, this is a parse error.

Ignore the token. */

if(!$this->elementInScope($token['name'], true)) {

// Ignore

/* Otherwise: */

} else {

/* Clear the stack back to a table body context. */

$this->clearStackToTableContext($clear);

/* Pop the current node from the stack of open elements. Switch

the insertion mode to "in table". */

array_pop($this->stack);

$this->mode = self::IN_TABLE;

}

/* A start tag whose tag name is one of: "caption", "col", "colgroup",

"tbody", "tfoot", "thead", or an end tag whose tag name is "table" */

} elseif(($token['type'] === HTML5::STARTTAG && in_array($token['name'],

array('caption', 'col', 'colgroup', 'tbody', 'tfoor', 'thead'))) ||

($token['type'] === HTML5::STARTTAG && $token['name'] === 'table')) {

/* If the stack of open elements does not have a tbody, thead, or

tfoot element in table scope, this is a parse error. Ignore the

token. (innerHTML case) */

if(!$this->elementInScope(array('tbody', 'thead', 'tfoot'), true)) {

// Ignore.

/* Otherwise: */

} else {

/* Clear the stack back to a table body context. */

$this->clearStackToTableContext($clear);

/* Act as if an end tag with the same tag name as the current

node ("tbody", "tfoot", or "thead") had been seen, then

reprocess the current token. */

$this->inTableBody(array(

'name' => end($this->stack)->nodeName,

'type' => HTML5::ENDTAG

));

return $this->mainPhase($token);

}

/* An end tag whose tag name is one of: "body", "caption", "col",

"colgroup", "html", "td", "th", "tr" */

} elseif($token['type'] === HTML5::ENDTAG && in_array($token['name'],

array('body', 'caption', 'col', 'colgroup', 'html', 'td', 'th', 'tr'))) {

/* Parse error. Ignore the token. */

/* Anything else */

} else {

/* Process the token as if the insertion mode was "in table". */

$this->inTable($token);

}

private function inRow($token)

{

$clear = array('tr', 'html');

/* A start tag whose tag name is one of: "th", "td" */

if($token['type'] === HTML5::STARTTAG &&

($token['name'] === 'th' || $token['name'] === 'td')) {

/* Clear the stack back to a table row context. */

$this->clearStackToTableContext($clear);

/* Insert an HTML element for the token, then switch the insertion

mode to "in cell". */

$this->insertElement($token);

$this->mode = self::IN_CELL;

/* Insert a marker at the end of the list of active formatting

elements. */

$this->a_formatting[] = self::MARKER;

/* An end tag whose tag name is "tr" */

} elseif($token['type'] === HTML5::ENDTAG && $token['name'] === 'tr') {

/* If the stack of open elements does not have an element in table

scope with the same tag name as the token, this is a parse error.

Ignore the token. (innerHTML case) */

if(!$this->elementInScope($token['name'], true)) {

// Ignore.

/* Otherwise: */

} else {

/* Clear the stack back to a table row context. */

$this->clearStackToTableContext($clear);

/* Pop the current node (which will be a tr element) from the

stack of open elements. Switch the insertion mode to "in table

body". */

array_pop($this->stack);

$this->mode = self::IN_TBODY;

}

/* A start tag whose tag name is one of: "caption", "col", "colgroup",

"tbody", "tfoot", "thead", "tr" or an end tag whose tag name is "table" */

} elseif($token['type'] === HTML5::STARTTAG && in_array($token['name'],

array('caption', 'col', 'colgroup', 'tbody', 'tfoot', 'thead', 'tr'))) {

/* Act as if an end tag with the tag name "tr" had been seen, then,

if that token wasn't ignored, reprocess the current token. */

$this->inRow(array(

'name' => 'tr',

'type' => HTML5::ENDTAG

));

return $this->inCell($token);

/* An end tag whose tag name is one of: "tbody", "tfoot", "thead" */

} elseif($token['type'] === HTML5::ENDTAG &&

in_array($token['name'], array('tbody', 'tfoot', 'thead'))) {

/* If the stack of open elements does not have an element in table

scope with the same tag name as the token, this is a parse error.

Ignore the token. */

if(!$this->elementInScope($token['name'], true)) {

// Ignore.

/* Otherwise: */

} else {

/* Otherwise, act as if an end tag with the tag name "tr" had

been seen, then reprocess the current token. */

$this->inRow(array(

'name' => 'tr',

'type' => HTML5::ENDTAG

));

return $this->inCell($token);

}

/* An end tag whose tag name is one of: "body", "caption", "col",

"colgroup", "html", "td", "th" */

} elseif($token['type'] === HTML5::ENDTAG && in_array($token['name'],

array('body', 'caption', 'col', 'colgroup', 'html', 'td', 'th', 'tr'))) {

/* Parse error. Ignore the token. */

/* Anything else */

} else {

/* Process the token as if the insertion mode was "in table". */

$this->inTable($token);

}

private function inCell($token)

{

/* An end tag whose tag name is one of: "td", "th" */

if($token['type'] === HTML5::ENDTAG &&

($token['name'] === 'td' || $token['name'] === 'th')) {

/* If the stack of open elements does not have an element in table

scope with the same tag name as that of the token, then this is a

parse error and the token must be ignored. */

if(!$this->elementInScope($token['name'], true)) {

// Ignore.

/* Otherwise: */

} else {

/* Generate implied end tags, except for elements with the same

tag name as the token. */

$this->generateImpliedEndTags(array($token['name']));

/* Now, if the current node is not an element with the same tag

name as the token, then this is a parse error. */

// k

/* Pop elements from this stack until an element with the same

tag name as the token has been popped from the stack. */

while(true) {

$node = end($this->stack)->nodeName;

array_pop($this->stack);

if($node === $token['name']) {

break;

}

/* Clear the list of active formatting elements up to the last

marker. */

$this->clearTheActiveFormattingElementsUpToTheLastMarker();

/* Switch the insertion mode to "in row". (The current node

will be a tr element at this point.) */

$this->mode = self::IN_ROW;

}

/* A start tag whose tag name is one of: "caption", "col", "colgroup",

"tbody", "td", "tfoot", "th", "thead", "tr" */

} elseif($token['type'] === HTML5::STARTTAG && in_array($token['name'],

array('caption', 'col', 'colgroup', 'tbody', 'td', 'tfoot', 'th',

'thead', 'tr'))) {

/* If the stack of open elements does not have a td or th element

in table scope, then this is a parse error; ignore the token.

(innerHTML case) */

if(!$this->elementInScope(array('td', 'th'), true)) {

// Ignore.

/* Otherwise, close the cell (see below) and reprocess the current

token. */

} else {

$this->closeCell();

return $this->inRow($token);

}

/* A start tag whose tag name is one of: "caption", "col", "colgroup",

"tbody", "td", "tfoot", "th", "thead", "tr" */

} elseif($token['type'] === HTML5::STARTTAG && in_array($token['name'],

array('caption', 'col', 'colgroup', 'tbody', 'td', 'tfoot', 'th',

'thead', 'tr'))) {

/* If the stack of open elements does not have a td or th element

in table scope, then this is a parse error; ignore the token.

(innerHTML case) */

if(!$this->elementInScope(array('td', 'th'), true)) {

// Ignore.

/* Otherwise, close the cell (see below) and reprocess the current

token. */

} else {

$this->closeCell();

return $this->inRow($token);

}

/* An end tag whose tag name is one of: "body", "caption", "col",

"colgroup", "html" */

} elseif($token['type'] === HTML5::ENDTAG && in_array($token['name'],

array('body', 'caption', 'col', 'colgroup', 'html'))) {

/* Parse error. Ignore the token. */

/* An end tag whose tag name is one of: "table", "tbody", "tfoot",

"thead", "tr" */

} elseif($token['type'] === HTML5::ENDTAG && in_array($token['name'],

array('table', 'tbody', 'tfoot', 'thead', 'tr'))) {

/* If the stack of open elements does not have an element in table

scope with the same tag name as that of the token (which can only

happen for "tbody", "tfoot" and "thead", or, in the innerHTML case),

then this is a parse error and the token must be ignored. */

if(!$this->elementInScope($token['name'], true)) {

// Ignore.

/* Otherwise, close the cell (see below) and reprocess the current

token. */

} else {

$this->closeCell();

return $this->inRow($token);

}

/* Anything else */

} else {

/* Process the token as if the insertion mode was "in body". */

$this->inBody($token);

}

private function inSelect($token)

{

/* Handle the token as follows: */

/* A character token */

if($token['type'] === HTML5::CHARACTR) {

/* Append the token's character to the current node. */

$this->insertText($token['data']);

/* A comment token */

} elseif($token['type'] === HTML5::COMMENT) {

/* Append a Comment node to the current node with the data

attribute set to the data given in the comment token. */

$this->insertComment($token['data']);

/* A start tag token whose tag name is "option" */

} elseif($token['type'] === HTML5::STARTTAG &&

$token['name'] === 'option') {

/* If the current node is an option element, act as if an end tag

with the tag name "option" had been seen. */

if(end($this->stack)->nodeName === 'option') {

$this->inSelect(array(

'name' => 'option',

'type' => HTML5::ENDTAG

));

}

/* Insert an HTML element for the token. */

$this->insertElement($token);

/* A start tag token whose tag name is "optgroup" */

} elseif($token['type'] === HTML5::STARTTAG &&

$token['name'] === 'optgroup') {

/* If the current node is an option element, act as if an end tag

with the tag name "option" had been seen. */

if(end($this->stack)->nodeName === 'option') {

$this->inSelect(array(

'name' => 'option',

'type' => HTML5::ENDTAG

));

}

/* If the current node is an optgroup element, act as if an end tag

with the tag name "optgroup" had been seen. */

if(end($this->stack)->nodeName === 'optgroup') {

$this->inSelect(array(

'name' => 'optgroup',

'type' => HTML5::ENDTAG

));

}

/* Insert an HTML element for the token. */

$this->insertElement($token);

/* An end tag token whose tag name is "optgroup" */

} elseif($token['type'] === HTML5::ENDTAG &&

$token['name'] === 'optgroup') {

/* First, if the current node is an option element, and the node

immediately before it in the stack of open elements is an optgroup

element, then act as if an end tag with the tag name "option" had

been seen. */

$elements_in_stack = count($this->stack);

if($this->stack[$elements_in_stack - 1]->nodeName === 'option' &&

$this->stack[$elements_in_stack - 2]->nodeName === 'optgroup') {

$this->inSelect(array(

'name' => 'option',

'type' => HTML5::ENDTAG

));

}

/* If the current node is an optgroup element, then pop that node

from the stack of open elements. Otherwise, this is a parse error,

ignore the token. */

if($this->stack[$elements_in_stack - 1] === 'optgroup') {

array_pop($this->stack);

}

/* An end tag token whose tag name is "option" */

} elseif($token['type'] === HTML5::ENDTAG &&

$token['name'] === 'option') {

/* If the current node is an option element, then pop that node

from the stack of open elements. Otherwise, this is a parse error,

ignore the token. */

if(end($this->stack)->nodeName === 'option') {

array_pop($this->stack);

}

/* An end tag whose tag name is "select" */

} elseif($token['type'] === HTML5::ENDTAG &&

$token['name'] === 'select') {

/* If the stack of open elements does not have an element in table

scope with the same tag name as the token, this is a parse error.

Ignore the token. (innerHTML case) */

if(!$this->elementInScope($token['name'], true)) {

// w/e

/* Otherwise: */

} else {

/* Pop elements from the stack of open elements until a select

element has been popped from the stack. */

while(true) {

$current = end($this->stack)->nodeName;

array_pop($this->stack);

if($current === 'select') {

break;

}

/* Reset the insertion mode appropriately. */

$this->resetInsertionMode();

}

/* A start tag whose tag name is "select" */

} elseif($token['name'] === 'select' &&

$token['type'] === HTML5::STARTTAG) {

/* Parse error. Act as if the token had been an end tag with the

tag name "select" instead. */

$this->inSelect(array(

'name' => 'select',

'type' => HTML5::ENDTAG

));

/* An end tag whose tag name is one of: "caption", "table", "tbody",

"tfoot", "thead", "tr", "td", "th" */

} elseif(in_array($token['name'], array('caption', 'table', 'tbody',

'tfoot', 'thead', 'tr', 'td', 'th')) && $token['type'] === HTML5::ENDTAG) {

/* Parse error. */

// w/e

/* If the stack of open elements has an element in table scope with

the same tag name as that of the token, then act as if an end tag

with the tag name "select" had been seen, and reprocess the token.

Otherwise, ignore the token. */

if($this->elementInScope($token['name'], true)) {

$this->inSelect(array(

'name' => 'select',

'type' => HTML5::ENDTAG

));

$this->mainPhase($token);

}

/* Anything else */

} else {

/* Parse error. Ignore the token. */

}

private function afterBody($token)

{

/* Handle the token as follows: */

/* A character token that is one of one of U+0009 CHARACTER TABULATION,

U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),

or U+0020 SPACE */

if($token['type'] === HTML5::CHARACTR &&

preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {

/* Process the token as it would be processed if the insertion mode

was "in body". */

$this->inBody($token);

/* A comment token */

} elseif($token['type'] === HTML5::COMMENT) {

/* Append a Comment node to the first element in the stack of open

elements (the html element), with the data attribute set to the

data given in the comment token. */

$comment = $this->dom->createComment($token['data']);

$this->stack[0]->appendChild($comment);

/* An end tag with the tag name "html" */

} elseif($token['type'] === HTML5::ENDTAG && $token['name'] === 'html') {

/* If the parser was originally created in order to handle the

setting of an element's innerHTML attribute, this is a parse error;

ignore the token. (The element will be an html element in this

case.) (innerHTML case) */

/* Otherwise, switch to the trailing end phase. */

$this->phase = self::END_PHASE;

/* Anything else */

} else {

/* Parse error. Set the insertion mode to "in body" and reprocess

the token. */

$this->mode = self::IN_BODY;

return $this->inBody($token);

}

private function inFrameset($token)

{

/* Handle the token as follows: */

/* A character token that is one of one of U+0009 CHARACTER TABULATION,

U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),

U+000D CARRIAGE RETURN (CR), or U+0020 SPACE */

if($token['type'] === HTML5::CHARACTR &&

preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {

/* Append the character to the current node. */

$this->insertText($token['data']);

/* A comment token */

} elseif($token['type'] === HTML5::COMMENT) {

/* Append a Comment node to the current node with the data

attribute set to the data given in the comment token. */

$this->insertComment($token['data']);

/* A start tag with the tag name "frameset" */

} elseif($token['name'] === 'frameset' &&

$token['type'] === HTML5::STARTTAG) {

$this->insertElement($token);

/* An end tag with the tag name "frameset" */

} elseif($token['name'] === 'frameset' &&

$token['type'] === HTML5::ENDTAG) {

/* If the current node is the root html element, then this is a

parse error; ignore the token. (innerHTML case) */

if(end($this->stack)->nodeName === 'html') {

// Ignore

} else {

/* Otherwise, pop the current node from the stack of open

elements. */

array_pop($this->stack);

/* If the parser was not originally created in order to handle

the setting of an element's innerHTML attribute (innerHTML case),

and the current node is no longer a frameset element, then change

the insertion mode to "after frameset". */

$this->mode = self::AFTR_FRAME;

}

/* A start tag with the tag name "frame" */

} elseif($token['name'] === 'frame' &&

$token['type'] === HTML5::STARTTAG) {

/* Insert an HTML element for the token. */

$this->insertElement($token);

/* Immediately pop the current node off the stack of open elements. */

array_pop($this->stack);

/* A start tag with the tag name "noframes" */

} elseif($token['name'] === 'noframes' &&

$token['type'] === HTML5::STARTTAG) {

/* Process the token as if the insertion mode had been "in body". */

$this->inBody($token);

/* Anything else */

} else {

/* Parse error. Ignore the token. */

}

private function afterFrameset($token)

{

/* Handle the token as follows: */

/* A character token that is one of one of U+0009 CHARACTER TABULATION,

U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),

U+000D CARRIAGE RETURN (CR), or U+0020 SPACE */

if($token['type'] === HTML5::CHARACTR &&

preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {

/* Append the character to the current node. */

$this->insertText($token['data']);

/* A comment token */

} elseif($token['type'] === HTML5::COMMENT) {

/* Append a Comment node to the current node with the data

attribute set to the data given in the comment token. */

$this->insertComment($token['data']);

/* An end tag with the tag name "html" */

} elseif($token['name'] === 'html' &&

$token['type'] === HTML5::ENDTAG) {

/* Switch to the trailing end phase. */

$this->phase = self::END_PHASE;

/* A start tag with the tag name "noframes" */

} elseif($token['name'] === 'noframes' &&

$token['type'] === HTML5::STARTTAG) {

/* Process the token as if the insertion mode had been "in body". */

$this->inBody($token);

/* Anything else */

} else {

/* Parse error. Ignore the token. */

}

private function trailingEndPhase($token)

{

/* After the main phase, as each token is emitted from the tokenisation

stage, it must be processed as described in this section. */

/* A DOCTYPE token */

if($token['type'] === HTML5::DOCTYPE) {

// Parse error. Ignore the token.

/* A comment token */

} elseif($token['type'] === HTML5::COMMENT) {

/* Append a Comment node to the Document object with the data

attribute set to the data given in the comment token. */

$comment = $this->dom->createComment($token['data']);

$this->dom->appendChild($comment);

/* A character token that is one of one of U+0009 CHARACTER TABULATION,

U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),

or U+0020 SPACE */

} elseif($token['type'] === HTML5::CHARACTR &&

preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {

/* Process the token as it would be processed in the main phase. */

$this->mainPhase($token);

/* A character token that is not one of U+0009 CHARACTER TABULATION,

U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),

or U+0020 SPACE. Or a start tag token. Or an end tag token. */

} elseif(($token['type'] === HTML5::CHARACTR &&

preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) ||

$token['type'] === HTML5::STARTTAG || $token['type'] === HTML5::ENDTAG) {

/* Parse error. Switch back to the main phase and reprocess the

token. */

$this->phase = self::MAIN_PHASE;

return $this->mainPhase($token);

/* An end-of-file token */

} elseif($token['type'] === HTML5::EOF) {

/* OMG DONE!! */

}

private function insertElement($token, $append = true)

{

$el = $this->dom->createElement($token['name']);

foreach($token['attr'] as $attr) {

if(!$el->hasAttribute($attr['name'])) {

$el->setAttribute($attr['name'], $attr['value']);

}

$this->appendToRealParent($el);

$this->stack[] = $el;

return $el;

}

private function insertText($data)

{

$text = $this->dom->createTextNode($data);

$this->appendToRealParent($text);

}

private function insertComment($data)

{

$comment = $this->dom->createComment($data);

$this->appendToRealParent($comment);

}

private function appendToRealParent($node)

{

if($this->foster_parent === null) {

end($this->stack)->appendChild($node);

} elseif($this->foster_parent !== null) {

/* If the foster parent element is the parent element of the

last table element in the stack of open elements, then the new

node must be inserted immediately before the last table element

in the stack of open elements in the foster parent element;

otherwise, the new node must be appended to the foster parent

element. */

for($n = count($this->stack) - 1; $n >= 0; $n--) {

if($this->stack[$n]->nodeName === 'table' &&

$this->stack[$n]->parentNode !== null) {

$table = $this->stack[$n];

break;

}

if(isset($table) && $this->foster_parent->isSameNode($table->parentNode))

$this->foster_parent->insertBefore($node, $table);

else

$this->foster_parent->appendChild($node);

$this->foster_parent = null;

}

private function elementInScope($el, $table = false)

{

if(is_array($el)) {

foreach($el as $element) {

if($this->elementInScope($element, $table)) {

return true;

}

return false;

}

$leng = count($this->stack);

for($n = 0; $n < $leng; $n++) {

/* 1. Initialise node to be the current node (the bottommost node of

the stack). */

$node = $this->stack[$leng - 1 - $n];

if($node->tagName === $el) {

/* 2. If node is the target node, terminate in a match state. */

return true;

} elseif($node->tagName === 'table') {

/* 3. Otherwise, if node is a table element, terminate in a failure

state. */

return false;

} elseif($table === true && in_array($node->tagName, array('caption', 'td',

'th', 'button', 'marquee', 'object'))) {

/* 4. Otherwise, if the algorithm is the "has an element in scope"

variant (rather than the "has an element in table scope" variant),

and node is one of the following, terminate in a failure state. */

return false;

} elseif($node === $node->ownerDocument->documentElement) {

/* 5. Otherwise, if node is an html element (root element), terminate

in a failure state. (This can only happen if the node is the topmost

node of the    stack of open elements, and prevents the next step from

being invoked if there are no more elements in the stack.) */

return false;

}

/* Otherwise, set node to the previous entry in the stack of open

elements and return to step 2. (This will never fail, since the loop

will always terminate in the previous step if the top of the stack

is reached.) */

}

private function reconstructActiveFormattingElements()

{

/* 1. If there are no entries in the list of active formatting elements,

then there is nothing to reconstruct; stop this algorithm. */

$formatting_elements = count($this->a_formatting);

if($formatting_elements === 0) {

return false;

}

/* 3. Let entry be the last (most recently added) element in the list

of active formatting elements. */

$entry = end($this->a_formatting);

/* 2. If the last (most recently added) entry in the list of active

formatting elements is a marker, or if it is an element that is in the

stack of open elements, then there is nothing to reconstruct; stop this

algorithm. */

if($entry === self::MARKER || in_array($entry, $this->stack, true)) {

return false;

}

for($a = $formatting_elements - 1; $a >= 0; true) {

/* 4. If there are no entries before entry in the list of active

formatting elements, then jump to step 8. */

if($a === 0) {

$step_seven = false;

break;

}

/* 5. Let entry be the entry one earlier than entry in the list of

active formatting elements. */

$a--;

$entry = $this->a_formatting[$a];

/* 6. If entry is neither a marker nor an element that is also in

thetack of open elements, go to step 4. */

if($entry === self::MARKER || in_array($entry, $this->stack, true)) {

break;

}

while(true) {

/* 7. Let entry be the element one later than entry in the list of

active formatting elements. */

if(isset($step_seven) && $step_seven === true) {

$a++;

$entry = $this->a_formatting[$a];

}

/* 8. Perform a shallow clone of the element entry to obtain clone. */

$clone = $entry->cloneNode();

/* 9. Append clone to the current node and push it onto the stack

of open elements  so that it is the new current node. */

end($this->stack)->appendChild($clone);

$this->stack[] = $clone;

/* 10. Replace the entry for entry in the list with an entry for

clone. */

$this->a_formatting[$a] = $clone;

/* 11. If the entry for clone in the list of active formatting

elements is not the last entry in the list, return to step 7. */

if(end($this->a_formatting) !== $clone) {

$step_seven = true;

} else {

break;

}

private function clearTheActiveFormattingElementsUpToTheLastMarker()

{

/* When the steps below require the UA to clear the list of active

formatting elements up to the last marker, the UA must perform the

following steps: */

while(true) {

/* 1. Let entry be the last (most recently added) entry in the list

of active formatting elements. */

$entry = end($this->a_formatting);

/* 2. Remove entry from the list of active formatting elements. */

array_pop($this->a_formatting);

/* 3. If entry was a marker, then stop the algorithm at this point.

The list has been cleared up to the last marker. */

if($entry === self::MARKER) {

break;

}

private function generateImpliedEndTags(array $exclude = array())

{

/* When the steps below require the UA to generate implied end tags,

then, if the current node is a dd element, a dt element, an li element,

a p element, a td element, a th  element, or a tr element, the UA must

act as if an end tag with the respective tag name had been seen and

then generate implied end tags again. */

$node = end($this->stack);

$elements = array_diff(array('dd', 'dt', 'li', 'p', 'td', 'th', 'tr'), $exclude);

while(in_array(end($this->stack)->nodeName, $elements)) {

array_pop($this->stack);

}

private function getElementCategory($name)

{

if(in_array($name, $this->special))

return self::SPECIAL;

elseif(in_array($name, $this->scoping))

return self::SCOPING;

elseif(in_array($name, $this->formatting))

return self::FORMATTING;

else

return self::PHRASING;

}

private function clearStackToTableContext($elements)

{

/* When the steps above require the UA to clear the stack back to a

table context, it means that the UA must, while the current node is not

a table element or an html element, pop elements from the stack of open

elements. If this causes any elements to be popped from the stack, then

this is a parse error. */

while(true) {

$node = end($this->stack)->nodeName;

if(in_array($node, $elements)) {

break;

} else {

array_pop($this->stack);

}

private function resetInsertionMode()

{

/* 1. Let last be false. */

$last = false;

$leng = count($this->stack);

for($n = $leng - 1; $n >= 0; $n--) {

/* 2. Let node be the last node in the stack of open elements. */

$node = $this->stack[$n];

/* 3. If node is the first node in the stack of open elements, then

set last to true. If the element whose innerHTML  attribute is being

set is neither a td  element nor a th element, then set node to the

element whose innerHTML  attribute is being set. (innerHTML  case) */

if($this->stack[0]->isSameNode($node)) {

$last = true;

}

/* 4. If node is a select element, then switch the insertion mode to

"in select" and abort these steps. (innerHTML case) */

if($node->nodeName === 'select') {

$this->mode = self::IN_SELECT;

break;

/* 5. If node is a td or th element, then switch the insertion mode

to "in cell" and abort these steps. */

} elseif($node->nodeName === 'td' || $node->nodeName === 'th') {

$this->mode = self::IN_CELL;

break;

/* 6. If node is a tr element, then switch the insertion mode to

"in    row" and abort these steps. */

} elseif($node->nodeName === 'tr') {

$this->mode = self::IN_ROW;

break;

/* 7. If node is a tbody, thead, or tfoot element, then switch the

insertion mode to "in table body" and abort these steps. */

} elseif(in_array($node->nodeName, array('tbody', 'thead', 'tfoot'))) {

$this->mode = self::IN_TBODY;

break;

/* 8. If node is a caption element, then switch the insertion mode

to "in caption" and abort these steps. */

} elseif($node->nodeName === 'caption') {

$this->mode = self::IN_CAPTION;

break;

/* 9. If node is a colgroup element, then switch the insertion mode

to "in column group" and abort these steps. (innerHTML case) */

} elseif($node->nodeName === 'colgroup') {

$this->mode = self::IN_CGROUP;

break;

/* 10. If node is a table element, then switch the insertion mode

to "in table" and abort these steps. */

} elseif($node->nodeName === 'table') {

$this->mode = self::IN_TABLE;

break;

/* 11. If node is a head element, then switch the insertion mode

to "in body" ("in body"! not "in head"!) and abort these steps.

(innerHTML case) */

} elseif($node->nodeName === 'head') {

$this->mode = self::IN_BODY;

break;

/* 12. If node is a body element, then switch the insertion mode to

"in body" and abort these steps. */

} elseif($node->nodeName === 'body') {

$this->mode = self::IN_BODY;

break;

/* 13. If node is a frameset element, then switch the insertion

mode to "in frameset" and abort these steps. (innerHTML case) */

} elseif($node->nodeName === 'frameset') {

$this->mode = self::IN_FRAME;

break;

/* 14. If node is an html element, then: if the head element

pointer is null, switch the insertion mode to "before head",

otherwise, switch the insertion mode to "after head". In either

case, abort these steps. (innerHTML case) */

} elseif($node->nodeName === 'html') {

$this->mode = ($this->head_pointer === null)

? self::BEFOR_HEAD

: self::AFTER_HEAD;

break;

/* 15. If last is true, then set the insertion mode to "in body"

and    abort these steps. (innerHTML case) */

} elseif($last) {

$this->mode = self::IN_BODY;

break;

}

private function closeCell()

{

/* If the stack of open elements has a td or th element in table scope,

then act as if an end tag token with that tag name had been seen. */

foreach(array('td', 'th') as $cell) {

if($this->elementInScope($cell, true)) {

$this->inCell(array(

'name' => $cell,

'type' => HTML5::ENDTAG

));

break;

}

public function save()

{

return $this->dom;

}

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