Merge branch 'drop-unused-html5-library' into 'dev'

Remove HTML5 parser lib deprecated in Hubzilla 5.0

See merge request hubzilla/core!2148

6 files changed, 0 insertions, 6469 deletions

diff --git a/library/HTML5/Data.php b/library/HTML5/Data.php
deleted file mode 100644
index fa97e3ee8..000000000
--- a/library/HTML5/Data.php
+++ /dev/null
@@ -1,120 +0,0 @@
-<?php
-
-// warning: this file is encoded in UTF-8!
-
-class HTML5_Data
-{
-
-    // at some point this should be moved to a .ser file. Another
-    // possible optimization is to give UTF-8 bytes, not Unicode
-    // codepoints
-    protected static $realCodepointTable = array(
-        0x0D => 0x000A, // LINE FEED (LF)
-        0x80 => 0x20AC, // EURO SIGN ('€')
-        0x81 => 0xFFFD, // REPLACEMENT CHARACTER
-        0x82 => 0x201A, // SINGLE LOW-9 QUOTATION MARK ('‚')
-        0x83 => 0x0192, // LATIN SMALL LETTER F WITH HOOK ('ƒ')
-        0x84 => 0x201E, // DOUBLE LOW-9 QUOTATION MARK ('„')
-        0x85 => 0x2026, // HORIZONTAL ELLIPSIS ('…')
-        0x86 => 0x2020, // DAGGER ('†')
-        0x87 => 0x2021, // DOUBLE DAGGER ('‡')
-        0x88 => 0x02C6, // MODIFIER LETTER CIRCUMFLEX ACCENT ('ˆ')
-        0x89 => 0x2030, // PER MILLE SIGN ('‰')
-        0x8A => 0x0160, // LATIN CAPITAL LETTER S WITH CARON ('Š')
-        0x8B => 0x2039, // SINGLE LEFT-POINTING ANGLE QUOTATION MARK ('‹')
-        0x8C => 0x0152, // LATIN CAPITAL LIGATURE OE ('Œ')
-        0x8D => 0xFFFD, // REPLACEMENT CHARACTER
-        0x8E => 0x017D, // LATIN CAPITAL LETTER Z WITH CARON ('Ž')
-        0x8F => 0xFFFD, // REPLACEMENT CHARACTER
-        0x90 => 0xFFFD, // REPLACEMENT CHARACTER
-        0x91 => 0x2018, // LEFT SINGLE QUOTATION MARK ('‘')
-        0x92 => 0x2019, // RIGHT SINGLE QUOTATION MARK ('’')
-        0x93 => 0x201C, // LEFT DOUBLE QUOTATION MARK ('“')
-        0x94 => 0x201D, // RIGHT DOUBLE QUOTATION MARK ('”')
-        0x95 => 0x2022, // BULLET ('•')
-        0x96 => 0x2013, // EN DASH ('–')
-        0x97 => 0x2014, // EM DASH ('—')
-        0x98 => 0x02DC, // SMALL TILDE ('˜')
-        0x99 => 0x2122, // TRADE MARK SIGN ('™')
-        0x9A => 0x0161, // LATIN SMALL LETTER S WITH CARON ('š')
-        0x9B => 0x203A, // SINGLE RIGHT-POINTING ANGLE QUOTATION MARK ('›')
-        0x9C => 0x0153, // LATIN SMALL LIGATURE OE ('œ')
-        0x9D => 0xFFFD, // REPLACEMENT CHARACTER
-        0x9E => 0x017E, // LATIN SMALL LETTER Z WITH CARON ('ž')
-        0x9F => 0x0178, // LATIN CAPITAL LETTER Y WITH DIAERESIS ('Ÿ')
-    );
-
-    protected static $namedCharacterReferences;
-
-    protected static $namedCharacterReferenceMaxLength;
-
-    /**
-     * Returns the "real" Unicode codepoint of a malformed character
-     * reference.
-     */
-    public static function getRealCodepoint($ref) {
-        if (!isset(self::$realCodepointTable[$ref])) return false;
-        else return self::$realCodepointTable[$ref];
-    }
-
-    public static function getNamedCharacterReferences() {
-        if (!self::$namedCharacterReferences) {
-            self::$namedCharacterReferences = unserialize(
-                file_get_contents(dirname(__FILE__) . '/named-character-references.ser'));
-        }
-        return self::$namedCharacterReferences;
-    }
-
-    public static function getNamedCharacterReferenceMaxLength() {
-        if (!self::$namedCharacterReferenceMaxLength) {
-            $namedCharacterReferences = self::getNamedCharacterReferences();
-            $lengths = array_map('strlen', array_keys($namedCharacterReferences));
-            self::$namedCharacterReferenceMaxLength = max($lengths);
-        }
-        return self::$namedCharacterReferenceMaxLength;
-    }
-
-
-    /**
-     * Converts a Unicode codepoint to sequence of UTF-8 bytes.
-     * @note Shamelessly stolen from HTML Purifier, which is also
-     *       shamelessly stolen from Feyd (which is in public domain).
-     */
-    public static function utf8chr($code) {
-        if($code > 0x10FFFF or $code < 0x0 or
-          ($code >= 0xD800 and $code <= 0xDFFF) ) {
-            // bits are set outside the "valid" range as defined
-            // by UNICODE 4.1.0
-            return "\xEF\xBF\xBD";
-        }
-
-        $x = $y = $z = $w = 0;
-        if ($code < 0x80) {
-            // regular ASCII character
-            $x = $code;
-        } else {
-            // set up bits for UTF-8
-            $x = ($code & 0x3F) | 0x80;
-            if ($code < 0x800) {
-               $y = (($code & 0x7FF) >> 6) | 0xC0;
-            } else {
-                $y = (($code & 0xFC0) >> 6) | 0x80;
-                if($code < 0x10000) {
-                    $z = (($code >> 12) & 0x0F) | 0xE0;
-                } else {
-                    $z = (($code >> 12) & 0x3F) | 0x80;
-                    $w = (($code >> 18) & 0x07) | 0xF0;
-                }
-            }
-        }
-        // set up the actual character
-        $ret = '';
-        if($w) $ret .= chr($w);
-        if($z) $ret .= chr($z);
-        if($y) $ret .= chr($y);
-        $ret .= chr($x);
-
-        return $ret;
-    }
-
-}
diff --git a/library/HTML5/InputStream.php b/library/HTML5/InputStream.php
deleted file mode 100644
index f98b42723..000000000
--- a/library/HTML5/InputStream.php
+++ /dev/null
@@ -1,284 +0,0 @@
-<?php
-
-/*
-
-Copyright 2009 Geoffrey Sneddon <http://gsnedders.com/>
-
-Permission is hereby granted, free of charge, to any person obtaining a
-copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be included
-in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
-CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
-TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
-SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-*/
-
-// Some conventions:
-// /* */ indicates verbatim text from the HTML 5 specification
-// // indicates regular comments
-
-class HTML5_InputStream {
-    /**
-     * The string data we're parsing.
-     */
-    private $data;
-
-    /**
-     * The current integer byte position we are in $data
-     */
-    private $char;
-
-    /**
-     * Length of $data; when $char === $data, we are at the end-of-file.
-     */
-    private $EOF;
-
-    /**
-     * Parse errors.
-     */
-    public $errors = array();
-
-    /**
-     * @param $data Data to parse
-     */
-    public function __construct($data) {
-
-        /* Given an encoding, the bytes in the input stream must be
-        converted to Unicode characters for the tokeniser, as
-        described by the rules for that encoding, except that the
-        leading U+FEFF BYTE ORDER MARK character, if any, must not
-        be stripped by the encoding layer (it is stripped by the rule below).
-
-        Bytes or sequences of bytes in the original byte stream that
-        could not be converted to Unicode characters must be converted
-        to U+FFFD REPLACEMENT CHARACTER code points. */
-
-        // XXX currently assuming input data is UTF-8; once we
-        // build encoding detection this will no longer be the case
-        //
-        // We previously had an mbstring implementation here, but that
-        // implementation is heavily non-conforming, so it's been
-        // omitted.
-        if (extension_loaded('iconv')) {
-            // non-conforming
-            $data = @iconv('UTF-8', 'UTF-8//IGNORE', $data);
-        } else {
-            // we can make a conforming native implementation
-            throw new Exception('Not implemented, please install mbstring or iconv');
-        }
-
-        /* One leading U+FEFF BYTE ORDER MARK character must be
-        ignored if any are present. */
-        if (substr($data, 0, 3) === "\xEF\xBB\xBF") {
-            $data = substr($data, 3);
-        }
-
-        /* All U+0000 NULL characters in the input must be replaced
-        by U+FFFD REPLACEMENT CHARACTERs. Any occurrences of such
-        characters is a parse error. */
-        for ($i = 0, $count = substr_count($data, "\0"); $i < $count; $i++) {
-            $this->errors[] = array(
-                'type' => HTML5_Tokenizer::PARSEERROR,
-                'data' => 'null-character'
-            );
-        }
-        /* U+000D CARRIAGE RETURN (CR) characters and U+000A LINE FEED
-        (LF) characters are treated specially. Any CR characters
-        that are followed by LF characters must be removed, and any
-        CR characters not followed by LF characters must be converted
-        to LF characters. Thus, newlines in HTML DOMs are represented
-        by LF characters, and there are never any CR characters in the
-        input to the tokenization stage. */
-        $data = str_replace(
-            array(
-                "\0",
-                "\r\n",
-                "\r"
-            ),
-            array(
-                "\xEF\xBF\xBD",
-                "\n",
-                "\n"
-            ),
-            $data
-        );
-
-        /* Any occurrences of any characters in the ranges U+0001 to
-        U+0008, U+000B,  U+000E to U+001F,  U+007F  to U+009F,
-        U+D800 to U+DFFF , U+FDD0 to U+FDEF, and
-        characters U+FFFE, U+FFFF, U+1FFFE, U+1FFFF, U+2FFFE, U+2FFFF,
-        U+3FFFE, U+3FFFF, U+4FFFE, U+4FFFF, U+5FFFE, U+5FFFF, U+6FFFE,
-        U+6FFFF, U+7FFFE, U+7FFFF, U+8FFFE, U+8FFFF, U+9FFFE, U+9FFFF,
-        U+AFFFE, U+AFFFF, U+BFFFE, U+BFFFF, U+CFFFE, U+CFFFF, U+DFFFE,
-        U+DFFFF, U+EFFFE, U+EFFFF, U+FFFFE, U+FFFFF, U+10FFFE, and
-        U+10FFFF are parse errors. (These are all control characters
-        or permanently undefined Unicode characters.) */
-        // Check PCRE is loaded.
-        if (extension_loaded('pcre')) {
-            $count = preg_match_all(
-                '/(?:
-                    [\x01-\x08\x0B\x0E-\x1F\x7F] # U+0001 to U+0008, U+000B,  U+000E to U+001F and U+007F
-                |
-                    \xC2[\x80-\x9F] # U+0080 to U+009F
-                |
-                    \xED(?:\xA0[\x80-\xFF]|[\xA1-\xBE][\x00-\xFF]|\xBF[\x00-\xBF]) # U+D800 to U+DFFFF
-                |
-                    \xEF\xB7[\x90-\xAF] # U+FDD0 to U+FDEF
-                |
-                    \xEF\xBF[\xBE\xBF] # U+FFFE and U+FFFF
-                |
-                    [\xF0-\xF4][\x8F-\xBF]\xBF[\xBE\xBF] # U+nFFFE and U+nFFFF (1 <= n <= 10_{16})
-                )/x',
-                $data,
-                $matches
-            );
-            for ($i = 0; $i < $count; $i++) {
-                $this->errors[] = array(
-                    'type' => HTML5_Tokenizer::PARSEERROR,
-                    'data' => 'invalid-codepoint'
-                );
-            }
-        } else {
-            // XXX: Need non-PCRE impl, probably using substr_count
-        }
-
-        $this->data = $data;
-        $this->char = 0;
-        $this->EOF  = strlen($data);
-    }
-
-    /**
-     * Returns the current line that the tokenizer is at.
-     */
-    public function getCurrentLine() {
-        // Check the string isn't empty
-        if($this->EOF) {
-            // Add one to $this->char because we want the number for the next
-            // byte to be processed.
-            return substr_count($this->data, "\n", 0, min($this->char, $this->EOF)) + 1;
-        } else {
-            // If the string is empty, we are on the first line (sorta).
-            return 1;
-        }
-    }
-
-    /**
-     * Returns the current column of the current line that the tokenizer is at.
-     */
-    public function getColumnOffset() {
-        // strrpos is weird, and the offset needs to be negative for what we
-        // want (i.e., the last \n before $this->char). This needs to not have
-        // one (to make it point to the next character, the one we want the
-        // position of) added to it because strrpos's behaviour includes the
-        // final offset byte.
-        $lastLine = strrpos($this->data, "\n", $this->char - 1 - strlen($this->data));
-
-        // However, for here we want the length up until the next byte to be
-        // processed, so add one to the current byte ($this->char).
-        if($lastLine !== false) {
-            $findLengthOf = substr($this->data, $lastLine + 1, $this->char - 1 - $lastLine);
-        } else {
-            $findLengthOf = substr($this->data, 0, $this->char);
-        }
-
-        // Get the length for the string we need.
-        if(extension_loaded('iconv')) {
-            return iconv_strlen($findLengthOf, 'utf-8');
-        } elseif(extension_loaded('mbstring')) {
-            return mb_strlen($findLengthOf, 'utf-8');
-        } elseif(extension_loaded('xml')) {
-            return strlen(utf8_decode($findLengthOf));
-        } else {
-            $count = count_chars($findLengthOf);
-            // 0x80 = 0x7F - 0 + 1 (one added to get inclusive range)
-            // 0x33 = 0xF4 - 0x2C + 1 (one added to get inclusive range)
-            return array_sum(array_slice($count, 0, 0x80)) +
-                   array_sum(array_slice($count, 0xC2, 0x33));
-        }
-    }
-
-    /**
-     * Retrieve the currently consume character.
-     * @note This performs bounds checking
-     */
-    public function char() {
-        return ($this->char++ < $this->EOF)
-            ? $this->data[$this->char - 1]
-            : false;
-    }
-
-    /**
-     * Get all characters until EOF.
-     * @note This performs bounds checking
-     */
-    public function remainingChars() {
-        if($this->char < $this->EOF) {
-            $data = substr($this->data, $this->char);
-            $this->char = $this->EOF;
-            return $data;
-        } else {
-            return false;
-        }
-    }
-
-    /**
-     * Matches as far as possible until we reach a certain set of bytes
-     * and returns the matched substring.
-     * @param $bytes Bytes to match.
-     */
-    public function charsUntil($bytes, $max = null) {
-        if ($this->char < $this->EOF) {
-            if ($max === 0 || $max) {
-                $len = strcspn($this->data, $bytes, $this->char, $max);
-            } else {
-                $len = strcspn($this->data, $bytes, $this->char);
-            }
-            $string = (string) substr($this->data, $this->char, $len);
-            $this->char += $len;
-            return $string;
-        } else {
-            return false;
-        }
-    }
-
-    /**
-     * Matches as far as possible with a certain set of bytes
-     * and returns the matched substring.
-     * @param $bytes Bytes to match.
-     */
-    public function charsWhile($bytes, $max = null) {
-        if ($this->char < $this->EOF) {
-            if ($max === 0 || $max) {
-                $len = strspn($this->data, $bytes, $this->char, $max);
-            } else {
-                $len = strspn($this->data, $bytes, $this->char);
-            }
-            $string = (string) substr($this->data, $this->char, $len);
-            $this->char += $len;
-            return $string;
-        } else {
-            return false;
-        }
-    }
-
-    /**
-     * Unconsume one character.
-     */
-    public function unget() {
-        if ($this->char <= $this->EOF) {
-            $this->char--;
-        }
-    }
-}
diff --git a/library/HTML5/Parser.php b/library/HTML5/Parser.php
deleted file mode 100644
index 5f9ca560e..000000000
--- a/library/HTML5/Parser.php
+++ /dev/null
@@ -1,36 +0,0 @@
-<?php
-
-require_once dirname(__FILE__) . '/Data.php';
-require_once dirname(__FILE__) . '/InputStream.php';
-require_once dirname(__FILE__) . '/TreeBuilder.php';
-require_once dirname(__FILE__) . '/Tokenizer.php';
-
-/**
- * Outwards facing interface for HTML5.
- */
-class HTML5_Parser
-{
-    /**
-     * Parses a full HTML document.
-     * @param $text HTML text to parse
-     * @param $builder Custom builder implementation
-     * @return Parsed HTML as DOMDocument
-     */
-    static public function parse($text, $builder = null) {
-        $tokenizer = new HTML5_Tokenizer($text, $builder);
-        $tokenizer->parse();
-        return $tokenizer->save();
-    }
-    /**
-     * Parses an HTML fragment.
-     * @param $text HTML text to parse
-     * @param $context String name of context element to pretend parsing is in.
-     * @param $builder Custom builder implementation
-     * @return Parsed HTML as DOMDocument
-     */
-    static public function parseFragment($text, $context = null, $builder = null) {
-        $tokenizer = new HTML5_Tokenizer($text, $builder);
-        $tokenizer->parseFragment($context);
-        return $tokenizer->save();
-    }
-}
diff --git a/library/HTML5/Tokenizer.php b/library/HTML5/Tokenizer.php
deleted file mode 100644
index 06c73065f..000000000
--- a/library/HTML5/Tokenizer.php
+++ /dev/null
@@ -1,2307 +0,0 @@
-<?php
-
-/*
-
-Copyright 2007 Jeroen van der Meer <http://jero.net/>
-Copyright 2008 Edward Z. Yang <http://htmlpurifier.org/>
-Copyright 2009 Geoffrey Sneddon <http://gsnedders.com/>
-
-Permission is hereby granted, free of charge, to any person obtaining a
-copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be included
-in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
-CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
-TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
-SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-*/
-
-// Some conventions:
-// /* */ indicates verbatim text from the HTML 5 specification
-// // indicates regular comments
-
-// all flags are in hyphenated form
-
-class HTML5_Tokenizer {
-    /**
-     * Points to an InputStream object.
-     */
-    protected $stream;
-
-    /**
-     * Tree builder that the tokenizer emits token to.
-     */
-    private $tree;
-
-    /**
-     * Current content model we are parsing as.
-     */
-    protected $content_model;
-
-    /**
-     * Current token that is being built, but not yet emitted. Also
-     * is the last token emitted, if applicable.
-     */
-    protected $token;
-
-    // These are constants describing the content model
-    const PCDATA    = 0;
-    const RCDATA    = 1;
-    const CDATA     = 2;
-    const PLAINTEXT = 3;
-
-    // These are constants describing tokens
-    // XXX should probably be moved somewhere else, probably the
-    // HTML5 class.
-    const DOCTYPE        = 0;
-    const STARTTAG       = 1;
-    const ENDTAG         = 2;
-    const COMMENT        = 3;
-    const CHARACTER      = 4;
-    const SPACECHARACTER = 5;
-    const EOF            = 6;
-    const PARSEERROR     = 7;
-
-    // These are constants representing bunches of characters.
-    const ALPHA       = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
-    const UPPER_ALPHA = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
-    const LOWER_ALPHA = 'abcdefghijklmnopqrstuvwxyz';
-    const DIGIT       = '0123456789';
-    const HEX         = '0123456789ABCDEFabcdef';
-    const WHITESPACE  = "\t\n\x0c ";
-
-    /**
-     * @param $data Data to parse
-     */
-    public function __construct($data, $builder = null) {
-        $this->stream = new HTML5_InputStream($data);
-        if (!$builder) $this->tree = new HTML5_TreeBuilder;
-        $this->content_model = self::PCDATA;
-    }
-
-    public function parseFragment($context = null) {
-        $this->tree->setupContext($context);
-        if ($this->tree->content_model) {
-            $this->content_model = $this->tree->content_model;
-            $this->tree->content_model = null;
-        }
-        $this->parse();
-    }
-
-    // XXX maybe convert this into an iterator? regardless, this function
-    // and the save function should go into a Parser facade of some sort
-    /**
-     * Performs the actual parsing of the document.
-     */
-    public function parse() {
-        // Current state
-        $state = 'data';
-        // This is used to avoid having to have look-behind in the data state.
-        $lastFourChars = '';
-        /**
-         * Escape flag as specified by the HTML5 specification: "used to
-         * control the behavior of the tokeniser. It is either true or
-         * false, and initially must be set to the false state."
-         */
-        $escape = false;
-        //echo "\n\n";
-        while($state !== null) {
-            
-            /*echo $state . ' ';
-            switch ($this->content_model) {
-                case self::PCDATA: echo 'PCDATA'; break;
-                case self::RCDATA: echo 'RCDATA'; break;
-                case self::CDATA: echo 'CDATA'; break;
-                case self::PLAINTEXT: echo 'PLAINTEXT'; break;
-            }
-            if ($escape) echo " escape";
-            echo "\n";*/
-            
-            switch($state) {
-                case 'data':
-
-                    /* Consume the next input character */
-                    $char = $this->stream->char();
-                    $lastFourChars .= $char;
-                    if (strlen($lastFourChars) > 4) $lastFourChars = substr($lastFourChars, -4);
-
-                    // see below for meaning
-                    $hyp_cond = 
-                        !$escape &&
-                        (
-                            $this->content_model === self::RCDATA ||
-                            $this->content_model === self::CDATA
-                        );
-                    $amp_cond =
-                        !$escape &&
-                        (
-                            $this->content_model === self::PCDATA ||
-                            $this->content_model === self::RCDATA
-                        );
-                    $lt_cond =
-                        $this->content_model === self::PCDATA ||
-                        (
-                            (
-                                $this->content_model === self::RCDATA ||
-                                $this->content_model === self::CDATA
-                             ) &&
-                             !$escape
-                        );
-                    $gt_cond = 
-                        $escape &&
-                        (
-                            $this->content_model === self::RCDATA ||
-                            $this->content_model === self::CDATA
-                        );
-
-                    if($char === '&' && $amp_cond) {
-                        /* U+0026 AMPERSAND (&)
-                        When the content model flag is set to one of the PCDATA or RCDATA
-                        states and the escape flag is false: switch to the
-                        character reference data state. Otherwise: treat it as per
-                        the "anything else" entry below. */
-                        $state = 'characterReferenceData';
-
-                    } elseif(
-                        $char === '-' &&
-                        $hyp_cond &&
-                        $lastFourChars === '<!--'
-                    ) {
-                        /*
-                        U+002D HYPHEN-MINUS (-)
-                        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. */
-                        $escape = true;
-
-                        /* In any case, emit the input character as a character token. Stay
-                        in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::CHARACTER,
-                            'data' => '-'
-                        ));
-                        // We do the "any case" part as part of "anything else".
-
-                    /* U+003C LESS-THAN SIGN (<) */
-                    } elseif($char === '<' && $lt_cond) {
-                        /* 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. */
-                        $state = 'tagOpen';
-
-                    /* U+003E GREATER-THAN SIGN (>) */
-                    } elseif(
-                        $char === '>' &&
-                        $gt_cond &&
-                        substr($lastFourChars, 1) === '-->'
-                    ) {
-                        /* 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. */
-                        $escape = false;
-
-                        /* In any case, emit the input character as a character token.
-                        Stay in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::CHARACTER,
-                            'data' => '>'
-                        ));
-                        // We do the "any case" part as part of "anything else".
-
-                    } elseif($char === false) {
-                        /* EOF
-                        Emit an end-of-file token. */
-                        $state = null;
-                        $this->tree->emitToken(array(
-                            'type' => self::EOF
-                        ));
-                    
-                    } elseif($char === "\t" || $char === "\n" || $char === "\x0c" || $char === ' ') {
-                        // Directly after emitting a token you switch back to the "data
-                        // state". At that point spaceCharacters are important so they are
-                        // emitted separately.
-                        $chars = $this->stream->charsWhile(self::WHITESPACE);
-                        $this->emitToken(array(
-                            'type' => self::SPACECHARACTER,
-                            'data' => $char . $chars
-                        ));
-                        $lastFourChars .= $chars;
-                        if (strlen($lastFourChars) > 4) $lastFourChars = substr($lastFourChars, -4);
-
-                    } else {
-                        /* Anything else
-                        THIS IS AN OPTIMIZATION: 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. */
-                        
-                        $mask = '';
-                        if ($hyp_cond) $mask .= '-';
-                        if ($amp_cond) $mask .= '&';
-                        if ($lt_cond)  $mask .= '<';
-                        if ($gt_cond)  $mask .= '>';
-
-                        if ($mask === '') {
-                            $chars = $this->stream->remainingChars();
-                        } else {
-                            $chars = $this->stream->charsUntil($mask);
-                        }
-
-                        $this->emitToken(array(
-                            'type' => self::CHARACTER,
-                            'data' => $char . $chars
-                        ));
-
-                        $lastFourChars .= $chars;
-                        if (strlen($lastFourChars) > 4) $lastFourChars = substr($lastFourChars, -4);
-
-                        $state = 'data';
-                    }
-                break;
-
-                case 'characterReferenceData':
-                    /* (This cannot happen if the content model flag
-                    is set to the CDATA state.) */
-
-                    /* Attempt to consume a character reference, with no
-                    additional allowed character. */
-                    $entity = $this->consumeCharacterReference();
-
-                    /* If nothing is returned, emit a U+0026 AMPERSAND
-                    character token. Otherwise, emit the character token that
-                    was returned. */
-                    // This is all done when consuming the character reference.
-                    $this->emitToken(array(
-                        'type' => self::CHARACTER,
-                        'data' => $entity
-                    ));
-
-                    /* Finally, switch to the data state. */
-                    $state = 'data';
-                break;
-
-                case 'tagOpen':
-                    $char = $this->stream->char();
-
-                    switch($this->content_model) {
-                        case self::RCDATA:
-                        case self::CDATA:
-                            /* Consume the next input character. If it is a
-                            U+002F SOLIDUS (/) character, switch to the close
-                            tag open state. Otherwise, emit a U+003C LESS-THAN
-                            SIGN character token and reconsume the current input
-                            character in the data state. */
-                            // We consumed above.
-
-                            if($char === '/') {
-                                $state = 'closeTagOpen';
-
-                            } else {
-                                $this->emitToken(array(
-                                    'type' => self::CHARACTER,
-                                    'data' => '<'
-                                ));
-
-                                $this->stream->unget();
-
-                                $state = 'data';
-                            }
-                        break;
-
-                        case self::PCDATA:
-                            /* If the content model flag is set to the PCDATA state
-                            Consume the next input character: */
-                            // We consumed above.
-
-                            if($char === '!') {
-                                /* U+0021 EXCLAMATION MARK (!)
-                                Switch to the markup declaration open state. */
-                                $state = 'markupDeclarationOpen';
-
-                            } elseif($char === '/') {
-                                /* U+002F SOLIDUS (/)
-                                Switch to the close tag open state. */
-                                $state = 'closeTagOpen';
-
-                            } elseif('A' <= $char && $char <= 'Z') {
-                                /* 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()
-                                );
-
-                                $state = 'tagName';
-
-                            } elseif('a' <= $char && $char <= 'z') {
-                                /* U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z
-                                Create a new start tag token, set its tag name to the input
-                                character, 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'  => $char,
-                                    'type'  => self::STARTTAG,
-                                    'attr'  => array()
-                                );
-
-                                $state = 'tagName';
-
-                            } elseif($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::PARSEERROR,
-                                    'data' => 'expected-tag-name-but-got-right-bracket'
-                                ));
-                                $this->emitToken(array(
-                                    'type' => self::CHARACTER,
-                                    'data' => '<>'
-                                ));
-
-                                $state = 'data';
-
-                            } elseif($char === '?') {
-                                /* U+003F QUESTION MARK (?)
-                                Parse error. Switch to the bogus comment state. */
-                                $this->emitToken(array(
-                                    'type' => self::PARSEERROR,
-                                    'data' => 'expected-tag-name-but-got-question-mark'
-                                ));
-                                $this->token = array(
-                                    'data' => '?',
-                                    'type' => self::COMMENT
-                                );
-                                $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::PARSEERROR,
-                                    'data' => 'expected-tag-name'
-                                ));
-                                $this->emitToken(array(
-                                    'type' => self::CHARACTER,
-                                    'data' => '<'
-                                ));
-
-                                $state = 'data';
-                                $this->stream->unget();
-                            }
-                        break;
-                    }
-                break;
-
-                case 'closeTagOpen':
-                    if (
-                        $this->content_model === self::RCDATA ||
-                        $this->content_model === self::CDATA
-                    ) {
-                        /* If the content model flag is set to the RCDATA or CDATA
-                        states... */
-                        $name = strtolower($this->stream->charsWhile(self::ALPHA));
-                        $following = $this->stream->char();
-                        $this->stream->unget();
-                        if (
-                            !$this->token ||
-                            $this->token['name'] !== $name ||
-                            $this->token['name'] === $name && !in_array($following, array("\x09", "\x0A", "\x0C", "\x20", "\x3E", "\x2F", false))
-                        ) {
-                            /* if no start tag token has ever been emitted by this instance
-                            of the tokenizer (fragment case), or, if the next few
-                            characters do not match the tag name of the last start tag
-                            token emitted (compared in an ASCII case-insensitive manner),
-                            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+000C FORM FEED (FF)
-                                * U+0020 SPACE
-                                * U+003E GREATER-THAN SIGN (>)
-                                * U+002F SOLIDUS (/)
-                                * EOF
-
-                            ...then 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. */
-                            // XXX: Probably ought to replace in_array with $following === x ||...
-
-                            // We also need to emit $name now we've consumed that, as we
-                            // know it'll just be emitted as a character token.
-                            $this->emitToken(array(
-                                'type' => self::CHARACTER,
-                                'data' => '</' . $name
-                            ));
-
-                            $state = 'data';
-                        } else {
-                            // This matches what would happen if we actually did the
-                            // otherwise below (but we can't because we've consumed too
-                            // much).
-
-                            // Start the end tag token with the name we already have.
-                            $this->token = array(
-                                'name'  => $name,
-                                'type'  => self::ENDTAG
-                            );
-
-                            // Change to tag name state.
-                            $state = 'tagName';
-                        }
-                    } elseif ($this->content_model === self::PCDATA) {
-                        /* Otherwise, if the content model flag is set to the PCDATA
-                        state [...]: */
-                        $char = $this->stream->char();
-
-                        if ('A' <= $char && $char <= 'Z') {
-                            /* 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
-                            );
-
-                            $state = 'tagName';
-
-                        } elseif ('a' <= $char && $char <= 'z') {
-                            /* U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z
-                            Create a new end tag token, set its tag name to the
-                            input character, 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'  => $char,
-                                'type'  => self::ENDTAG
-                            );
-
-                            $state = 'tagName';
-
-                        } elseif($char === '>') {
-                            /* U+003E GREATER-THAN SIGN (>)
-                            Parse error. Switch to the data state. */
-                            $this->emitToken(array(
-                                'type' => self::PARSEERROR,
-                                'data' => 'expected-closing-tag-but-got-right-bracket'
-                            ));
-                            $state = 'data';
-
-                        } elseif($char === false) {
-                            /* 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::PARSEERROR,
-                                'data' => 'expected-closing-tag-but-got-eof'
-                            ));
-                            $this->emitToken(array(
-                                'type' => self::CHARACTER,
-                                'data' => '</'
-                            ));
-
-                            $this->stream->unget();
-                            $state = 'data';
-
-                        } else {
-                            /* Parse error. Switch to the bogus comment state. */
-                            $this->emitToken(array(
-                                'type' => self::PARSEERROR,
-                                'data' => 'expected-closing-tag-but-got-char'
-                            ));
-                            $this->token = array(
-                                'data' => $char,
-                                'type' => self::COMMENT
-                            );
-                            $state = 'bogusComment';
-                        }
-                    }
-                break;
-
-                case 'tagName':
-                    /* Consume the next input character: */
-                    $char = $this->stream->char();
-
-                    if($char === "\t" || $char === "\n" || $char === "\x0c" || $char === ' ') {
-                        /* U+0009 CHARACTER TABULATION
-                        U+000A LINE FEED (LF)
-                        U+000C FORM FEED (FF)
-                        U+0020 SPACE
-                        Switch to the before attribute name state. */
-                        $state = 'beforeAttributeName';
-
-                    } elseif($char === '/') {
-                        /* U+002F SOLIDUS (/)
-                        Switch to the self-closing start tag state. */
-                        $state = 'selfClosingStartTag';
-
-                    } elseif($char === '>') {
-                        /* U+003E GREATER-THAN SIGN (>)
-                        Emit the current tag token. Switch to the data state. */
-                        $this->emitToken($this->token);
-                        $state = 'data';
-
-                    } elseif('A' <= $char && $char <= 'Z') {
-                        /* U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z
-                        Append the lowercase version of the current input
-                        character (add 0x0020 to the character's code point) to
-                        the current tag token's tag name. Stay in the tag name state. */
-                        $chars = $this->stream->charsWhile(self::UPPER_ALPHA);
-
-                        $this->token['name'] .= strtolower($char . $chars);
-                        $state = 'tagName';
-
-                    } elseif($char === false) {
-                        /* EOF
-                        Parse error. Emit the current tag token. Reconsume the EOF
-                        character in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'eof-in-tag-name'
-                        ));
-                        $this->emitToken($this->token);
-
-                        $this->stream->unget();
-                        $state = 'data';
-
-                    } else {
-                        /* Anything else
-                        Append the current input character to the current tag token's tag name.
-                        Stay in the tag name state. */
-                        $chars = $this->stream->charsUntil("\t\n\x0C />" . self::UPPER_ALPHA);
-
-                        $this->token['name'] .= $char . $chars;
-                        $state = 'tagName';
-                    }
-                break;
-
-                case 'beforeAttributeName':
-                    /* Consume the next input character: */
-                    $char = $this->stream->char();
-
-                    // this conditional is optimized, check bottom
-                    if($char === "\t" || $char === "\n" || $char === "\x0c" || $char === ' ') {
-                        /* U+0009 CHARACTER TABULATION
-                        U+000A LINE FEED (LF)
-                        U+000C FORM FEED (FF)
-                        U+0020 SPACE
-                        Stay in the before attribute name state. */
-                        $state = 'beforeAttributeName';
-
-                    } elseif($char === '/') {
-                        /* U+002F SOLIDUS (/)
-                        Switch to the self-closing start tag state. */
-                        $state = 'selfClosingStartTag';
-
-                    } elseif($char === '>') {
-                        /* U+003E GREATER-THAN SIGN (>)
-                        Emit the current tag token. Switch to the data state. */
-                        $this->emitToken($this->token);
-                        $state = 'data';
-
-                    } elseif('A' <= $char && $char <= 'Z') {
-                        /* U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z
-                        Start a new attribute in the current tag token. Set that
-                        attribute's name to the lowercase version of the current
-                        input character (add 0x0020 to the character's code
-                        point), and its value to the empty string. Switch to the
-                        attribute name state.*/
-                        $this->token['attr'][] = array(
-                            'name'  => strtolower($char),
-                            'value' => ''
-                        );
-
-                        $state = 'attributeName';
-
-                    } elseif($char === false) {
-                        /* EOF
-                        Parse error. Emit the current tag token. Reconsume the EOF
-                        character in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'expected-attribute-name-but-got-eof'
-                        ));
-                        $this->emitToken($this->token);
-
-                        $this->stream->unget();
-                        $state = 'data';
-
-                    } else {
-                        /* U+0022 QUOTATION MARK (")
-                           U+0027 APOSTROPHE (')
-                           U+003D EQUALS SIGN (=)
-                        Parse error. Treat it as per the "anything else" entry
-                        below. */
-                        if($char === '"' || $char === "'" || $char === '=') {
-                            $this->emitToken(array(
-                                'type' => self::PARSEERROR,
-                                'data' => 'invalid-character-in-attribute-name'
-                            ));
-                        }
-
-                        /* 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'  => $char,
-                            'value' => ''
-                        );
-
-                        $state = 'attributeName';
-                    }
-                break;
-
-                case 'attributeName':
-                    // Consume the next input character:
-                    $char = $this->stream->char();
-
-                    // this conditional is optimized, check bottom
-                    if($char === "\t" || $char === "\n" || $char === "\x0c" || $char === ' ') {
-                        /* U+0009 CHARACTER TABULATION
-                        U+000A LINE FEED (LF)
-                        U+000C FORM FEED (FF)
-                        U+0020 SPACE
-                        Switch to the after attribute name state. */
-                        $state = 'afterAttributeName';
-
-                    } elseif($char === '/') {
-                        /* U+002F SOLIDUS (/)
-                        Switch to the self-closing start tag state. */
-                        $state = 'selfClosingStartTag';
-
-                    } elseif($char === '=') {
-                        /* U+003D EQUALS SIGN (=)
-                        Switch to the before attribute value state. */
-                        $state = 'beforeAttributeValue';
-
-                    } elseif($char === '>') {
-                        /* U+003E GREATER-THAN SIGN (>)
-                        Emit the current tag token. Switch to the data state. */
-                        $this->emitToken($this->token);
-                        $state = 'data';
-
-                    } elseif('A' <= $char && $char <= 'Z') {
-                        /* U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z
-                        Append the lowercase version of the current input
-                        character (add 0x0020 to the character's code point) to
-                        the current attribute's name. Stay in the attribute name
-                        state. */
-                        $chars = $this->stream->charsWhile(self::UPPER_ALPHA);
-
-                        $last = count($this->token['attr']) - 1;
-                        $this->token['attr'][$last]['name'] .= strtolower($char . $chars);
-
-                        $state = 'attributeName';
-
-                    } elseif($char === false) {
-                        /* EOF
-                        Parse error. Emit the current tag token. Reconsume the EOF
-                        character in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'eof-in-attribute-name'
-                        ));
-                        $this->emitToken($this->token);
-
-                        $this->stream->unget();
-                        $state = 'data';
-
-                    } else {
-                        /* U+0022 QUOTATION MARK (")
-                           U+0027 APOSTROPHE (')
-                        Parse error. Treat it as per the "anything else"
-                        entry below. */
-                        if($char === '"' || $char === "'") {
-                            $this->emitToken(array(
-                                'type' => self::PARSEERROR,
-                                'data' => 'invalid-character-in-attribute-name'
-                            ));
-                        }
-
-                        /* Anything else
-                        Append the current input character to the current attribute's name.
-                        Stay in the attribute name state. */
-                        $chars = $this->stream->charsUntil("\t\n\x0C /=>\"'" . self::UPPER_ALPHA);
-
-                        $last = count($this->token['attr']) - 1;
-                        $this->token['attr'][$last]['name'] .= $char . $chars;
-
-                        $state = 'attributeName';
-                    }
-
-                    /* When the user agent leaves the attribute name state
-                    (and before emitting the tag token, if appropriate), the
-                    complete attribute's name must be compared to the other
-                    attributes on the same token; if there is already an
-                    attribute on the token with the exact same name, then this
-                    is a parse error and the new attribute must be dropped, along
-                    with the value that gets associated with it (if any). */
-                    // this might be implemented in the emitToken method
-                break;
-
-                case 'afterAttributeName':
-                    // Consume the next input character:
-                    $char = $this->stream->char();
-
-                    // this is an optimized conditional, check the bottom
-                    if($char === "\t" || $char === "\n" || $char === "\x0c" || $char === ' ') {
-                        /* U+0009 CHARACTER TABULATION
-                        U+000A LINE FEED (LF)
-                        U+000C FORM FEED (FF)
-                        U+0020 SPACE
-                        Stay in the after attribute name state. */
-                        $state = 'afterAttributeName';
-
-                    } elseif($char === '/') {
-                        /* U+002F SOLIDUS (/)
-                        Switch to the self-closing start tag state. */
-                        $state = 'selfClosingStartTag';
-
-                    } elseif($char === '=') {
-                        /* U+003D EQUALS SIGN (=)
-                        Switch to the before attribute value state. */
-                        $state = 'beforeAttributeValue';
-
-                    } elseif($char === '>') {
-                        /* U+003E GREATER-THAN SIGN (>)
-                        Emit the current tag token. Switch to the data state. */
-                        $this->emitToken($this->token);
-                        $state = 'data';
-
-                    } elseif('A' <= $char && $char <= 'Z') {
-                        /* U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z
-                        Start a new attribute in the current tag token. Set that
-                        attribute's name to the lowercase version of the current
-                        input character (add 0x0020 to the character's code
-                        point), and its value to the empty string. Switch to the
-                        attribute name state. */
-                        $this->token['attr'][] = array(
-                            'name'  => strtolower($char),
-                            'value' => ''
-                        );
-
-                        $state = 'attributeName';
-
-                    } elseif($char === false) {
-                        /* EOF
-                        Parse error. Emit the current tag token. Reconsume the EOF
-                        character in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'expected-end-of-tag-but-got-eof'
-                        ));
-                        $this->emitToken($this->token);
-
-                        $this->stream->unget();
-                        $state = 'data';
-
-                    } else {
-                        /* U+0022 QUOTATION MARK (")
-                           U+0027 APOSTROPHE (')
-                        Parse error. Treat it as per the "anything else"
-                        entry below. */
-                        if($char === '"' || $char === "'") {
-                            $this->emitToken(array(
-                                'type' => self::PARSEERROR,
-                                'data' => 'invalid-character-after-attribute-name'
-                            ));
-                        }
-
-                        /* 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'  => $char,
-                            'value' => ''
-                        );
-
-                        $state = 'attributeName';
-                    }
-                break;
-
-                case 'beforeAttributeValue':
-                    // Consume the next input character:
-                    $char = $this->stream->char();
-
-                    // this is an optimized conditional
-                    if($char === "\t" || $char === "\n" || $char === "\x0c" || $char === ' ') {
-                        /* U+0009 CHARACTER TABULATION
-                        U+000A LINE FEED (LF)
-                        U+000C FORM FEED (FF)
-                        U+0020 SPACE
-                        Stay in the before attribute value state. */
-                        $state = 'beforeAttributeValue';
-
-                    } elseif($char === '"') {
-                        /* U+0022 QUOTATION MARK (")
-                        Switch to the attribute value (double-quoted) state. */
-                        $state = 'attributeValueDoubleQuoted';
-
-                    } elseif($char === '&') {
-                        /* U+0026 AMPERSAND (&)
-                        Switch to the attribute value (unquoted) state and reconsume
-                        this input character. */
-                        $this->stream->unget();
-                        $state = 'attributeValueUnquoted';
-
-                    } elseif($char === '\'') {
-                        /* U+0027 APOSTROPHE (')
-                        Switch to the attribute value (single-quoted) state. */
-                        $state = 'attributeValueSingleQuoted';
-
-                    } elseif($char === '>') {
-                        /* U+003E GREATER-THAN SIGN (>)
-                        Parse error. Emit the current tag token. Switch to the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'expected-attribute-value-but-got-right-bracket'
-                        ));
-                        $this->emitToken($this->token);
-                        $state = 'data';
-
-                    } elseif($char === false) {
-                        /* EOF
-                        Parse error. Emit the current tag token. Reconsume
-                        the character in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'expected-attribute-value-but-got-eof'
-                        ));
-                        $this->emitToken($this->token);
-                        $this->stream->unget();
-                        $state = 'data';
-
-                    } else {
-                        /* U+003D EQUALS SIGN (=)
-                        Parse error. Treat it as per the "anything else" entry below. */
-                        if($char === '=') {
-                            $this->emitToken(array(
-                                'type' => self::PARSEERROR,
-                                'data' => 'equals-in-unquoted-attribute-value'
-                            ));
-                        }
-
-                        /* 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;
-
-                        $state = 'attributeValueUnquoted';
-                    }
-                break;
-
-                case 'attributeValueDoubleQuoted':
-                    // Consume the next input character:
-                    $char = $this->stream->char();
-
-                    if($char === '"') {
-                        /* U+0022 QUOTATION MARK (")
-                        Switch to the after attribute value (quoted) state. */
-                        $state = 'afterAttributeValueQuoted';
-
-                    } elseif($char === '&') {
-                        /* U+0026 AMPERSAND (&)
-                        Switch to the character reference in attribute value
-                        state, with the additional allowed character
-                        being U+0022 QUOTATION MARK ("). */
-                        $this->characterReferenceInAttributeValue('"');
-
-                    } elseif($char === false) {
-                        /* EOF
-                        Parse error. Emit the current tag token. Reconsume the character
-                        in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'eof-in-attribute-value-double-quote'
-                        ));
-                        $this->emitToken($this->token);
-
-                        $this->stream->unget();
-                        $state = 'data';
-
-                    } else {
-                        /* Anything else
-                        Append the current input character to the current attribute's value.
-                        Stay in the attribute value (double-quoted) state. */
-                        $chars = $this->stream->charsUntil('"&');
-
-                        $last = count($this->token['attr']) - 1;
-                        $this->token['attr'][$last]['value'] .= $char . $chars;
-
-                        $state = 'attributeValueDoubleQuoted';
-                    }
-                break;
-
-                case 'attributeValueSingleQuoted':
-                    // Consume the next input character:
-                    $char = $this->stream->char();
-
-                    if($char === "'") {
-                        /* U+0022 QUOTATION MARK (')
-                        Switch to the after attribute value state. */
-                        $state = 'afterAttributeValueQuoted';
-
-                    } elseif($char === '&') {
-                        /* U+0026 AMPERSAND (&)
-                        Switch to the entity in attribute value state. */
-                        $this->characterReferenceInAttributeValue("'");
-
-                    } elseif($char === false) {
-                        /* EOF
-                        Parse error. Emit the current tag token. Reconsume the character
-                        in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'eof-in-attribute-value-single-quote'
-                        ));
-                        $this->emitToken($this->token);
-
-                        $this->stream->unget();
-                        $state = 'data';
-
-                    } else {
-                        /* Anything else
-                        Append the current input character to the current attribute's value.
-                        Stay in the attribute value (single-quoted) state. */
-                        $chars = $this->stream->charsUntil("'&");
-
-                        $last = count($this->token['attr']) - 1;
-                        $this->token['attr'][$last]['value'] .= $char . $chars;
-
-                        $state = 'attributeValueSingleQuoted';
-                    }
-                break;
-
-                case 'attributeValueUnquoted':
-                    // Consume the next input character:
-                    $char = $this->stream->char();
-
-                    if($char === "\t" || $char === "\n" || $char === "\x0c" || $char === ' ') {
-                        /* U+0009 CHARACTER TABULATION
-                        U+000A LINE FEED (LF)
-                        U+000C FORM FEED (FF)
-                        U+0020 SPACE
-                        Switch to the before attribute name state. */
-                        $state = 'beforeAttributeName';
-
-                    } elseif($char === '&') {
-                        /* U+0026 AMPERSAND (&)
-                        Switch to the entity in attribute value state. */
-                        $this->characterReferenceInAttributeValue();
-
-                    } elseif($char === '>') {
-                        /* U+003E GREATER-THAN SIGN (>)
-                        Emit the current tag token. Switch to the data state. */
-                        $this->emitToken($this->token);
-                        $state = 'data';
-
-                    } elseif ($char === false) {
-                        /* EOF
-                        Parse error. Emit the current tag token. Reconsume
-                        the character in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'eof-in-attribute-value-no-quotes'
-                        ));
-                        $this->emitToken($this->token);
-                        $this->stream->unget();
-                        $state = 'data';
-
-                    } else {
-                        /* U+0022 QUOTATION MARK (")
-                           U+0027 APOSTROPHE (')
-                           U+003D EQUALS SIGN (=)
-                        Parse error. Treat it as per the "anything else"
-                        entry below. */
-                        if($char === '"' || $char === "'" || $char === '=') {
-                            $this->emitToken(array(
-                                'type' => self::PARSEERROR,
-                                'data' => 'unexpected-character-in-unquoted-attribute-value'
-                            ));
-                        }
-
-                        /* Anything else
-                        Append the current input character to the current attribute's value.
-                        Stay in the attribute value (unquoted) state. */
-                        $chars = $this->stream->charsUntil("\t\n\x0c &>\"'=");
-
-                        $last = count($this->token['attr']) - 1;
-                        $this->token['attr'][$last]['value'] .= $char . $chars;
-
-                        $state = 'attributeValueUnquoted';
-                    }
-                break;
-
-                case 'afterAttributeValueQuoted':
-                    /* Consume the next input character: */
-                    $char = $this->stream->char();
-
-                    if($char === "\t" || $char === "\n" || $char === "\x0c" || $char === ' ') {
-                        /* U+0009 CHARACTER TABULATION
-                           U+000A LINE FEED (LF)
-                           U+000C FORM FEED (FF)
-                           U+0020 SPACE
-                        Switch to the before attribute name state. */
-                        $state = 'beforeAttributeName';
-
-                    } elseif ($char === '/') {
-                        /* U+002F SOLIDUS (/)
-                        Switch to the self-closing start tag state. */
-                        $state = 'selfClosingStartTag';
-
-                    } elseif ($char === '>') {
-                        /* U+003E GREATER-THAN SIGN (>)
-                        Emit the current tag token. Switch to the data state. */
-                        $this->emitToken($this->token);
-                        $state = 'data';
-
-                    } elseif ($char === false) {
-                        /* EOF
-                        Parse error. Emit the current tag token. Reconsume the EOF
-                        character in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'unexpected-EOF-after-attribute-value'
-                        ));
-                        $this->emitToken($this->token);
-                        $this->stream->unget();
-                        $state = 'data';
-
-                    } else {
-                        /* Anything else
-                        Parse error. Reconsume the character in the before attribute
-                        name state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'unexpected-character-after-attribute-value'
-                        ));
-                        $this->stream->unget();
-                        $state = 'beforeAttributeName';
-                    }
-                break;
-
-                case 'selfClosingStartTag':
-                    /* Consume the next input character: */
-                    $char = $this->stream->char();
-
-                    if ($char === '>') {
-                        /* U+003E GREATER-THAN SIGN (>)
-                        Set the self-closing flag of the current tag token.
-                        Emit the current tag token. Switch to the data state. */
-                        // not sure if this is the name we want
-                        $this->token['self-closing'] = true;
-                        /* When an end tag token is emitted with its self-closing flag set,
-                        that is a parse error. */
-                        if ($this->token['type'] === self::ENDTAG) {
-                            $this->emitToken(array(
-                                'type' => self::PARSEERROR,
-                                'data' => 'self-closing-end-tag'
-                            ));
-                        }
-                        $this->emitToken($this->token);
-                        $state = 'data';
-
-                    } elseif ($char === false) {
-                        /* EOF
-                        Parse error. Emit the current tag token. Reconsume the
-                        EOF character in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'unexpected-eof-after-self-closing'
-                        ));
-                        $this->emitToken($this->token);
-                        $this->stream->unget();
-                        $state = 'data';
-
-                    } else {
-                        /* Anything else
-                        Parse error. Reconsume the character in the before attribute name state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'unexpected-character-after-self-closing'
-                        ));
-                        $this->stream->unget();
-                        $state = 'beforeAttributeName';
-                    }
-                break;
-
-                case 'bogusComment':
-                    /* (This can only happen if the content model flag is set to the PCDATA state.) */
-                    /* 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.) */
-                    $this->token['data'] .= (string) $this->stream->charsUntil('>');
-                    $this->stream->char();
-
-                    $this->emitToken($this->token);
-
-                    /* Switch to the data state. */
-                    $state = 'data';
-                break;
-
-                case 'markupDeclarationOpen':
-                    // Consume for below
-                    $hyphens = $this->stream->charsWhile('-', 2);
-                    if ($hyphens === '-') {
-                        $this->stream->unget();
-                    }
-                    if ($hyphens !== '--') {
-                        $alpha = $this->stream->charsWhile(self::ALPHA, 7);
-                    }
-
-                    /* If the next two characters are both U+002D HYPHEN-MINUS (-)
-                    characters, consume those two characters, create a comment token whose
-                    data is the empty string, and switch to the comment state. */
-                    if($hyphens === '--') {
-                        $state = 'commentStart';
-                        $this->token = array(
-                            'data' => '',
-                            'type' => self::COMMENT
-                        );
-
-                    /* Otherwise if the next seven characters are a case-insensitive match
-                    for the word "DOCTYPE", then consume those characters and switch to the
-                    DOCTYPE state. */
-                    } elseif(strtoupper($alpha) === 'DOCTYPE') {
-                        $state = 'doctype';
-
-                    // XXX not implemented
-                    /* Otherwise, if the insertion mode is "in foreign content"
-                    and the current node is not an element in the HTML namespace
-                    and the next seven characters are an ASCII case-sensitive
-                    match for the string "[CDATA[" (the five uppercase letters
-                    "CDATA" with a U+005B LEFT SQUARE BRACKET character before
-                    and after), then consume those characters and switch to the
-                    CDATA section state (which is unrelated to the content model
-                    flag's CDATA state). */
-
-                    /* 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->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'expected-dashes-or-doctype'
-                        ));
-                        $this->token = array(
-                            'data' => (string) $alpha,
-                            'type' => self::COMMENT
-                        );
-                        $state = 'bogusComment';
-                    }
-                break;
-
-                case 'commentStart':
-                    /* Consume the next input character: */
-                    $char = $this->stream->char();
-
-                    if ($char === '-') {
-                        /* U+002D HYPHEN-MINUS (-)
-                        Switch to the comment start dash state. */
-                        $state = 'commentStartDash';
-                    } elseif ($char === '>') {
-                        /* U+003E GREATER-THAN SIGN (>)
-                        Parse error. Emit the comment token. Switch to the
-                        data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'incorrect-comment'
-                        ));
-                        $this->emitToken($this->token);
-                        $state = 'data';
-                    } elseif ($char === false) {
-                        /* EOF
-                        Parse error. Emit the comment token. Reconsume the
-                        EOF character in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'eof-in-comment'
-                        ));
-                        $this->emitToken($this->token);
-                        $this->stream->unget();
-                        $state = 'data';
-                    } else {
-                        /* Anything else
-                        Append the input character to the comment token's
-                        data. Switch to the comment state. */
-                        $this->token['data'] .= $char;
-                        $state = 'comment';
-                    }
-                break;
-
-                case 'commentStartDash':
-                    /* Consume the next input character: */
-                    $char = $this->stream->char();
-                    if ($char === '-') {
-                        /* U+002D HYPHEN-MINUS (-)
-                        Switch to the comment end state */
-                        $state = 'commentEnd';
-                    } elseif ($char === '>') {
-                        /* U+003E GREATER-THAN SIGN (>)
-                        Parse error. Emit the comment token. Switch to the
-                        data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'incorrect-comment'
-                        ));
-                        $this->emitToken($this->token);
-                        $state = 'data';
-                    } elseif ($char === false) {
-                        /* Parse error. Emit the comment token. Reconsume the
-                        EOF character in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'eof-in-comment'
-                        ));
-                        $this->emitToken($this->token);
-                        $this->stream->unget();
-                        $state = 'data';
-                    } else {
-                        $this->token['data'] .= '-' . $char;
-                        $state = 'comment';
-                    }
-                break;
-
-                case 'comment':
-                    /* Consume the next input character: */
-                    $char = $this->stream->char();
-
-                    if($char === '-') {
-                        /* U+002D HYPHEN-MINUS (-)
-                        Switch to the comment end dash state */
-                        $state = 'commentEndDash';
-
-                    } elseif($char === false) {
-                        /* EOF
-                        Parse error. Emit the comment token. Reconsume the EOF character
-                        in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'eof-in-comment'
-                        ));
-                        $this->emitToken($this->token);
-                        $this->stream->unget();
-                        $state = 'data';
-
-                    } else {
-                        /* Anything else
-                        Append the input character to the comment token's data. Stay in
-                        the comment state. */
-                        $chars = $this->stream->charsUntil('-');
-
-                        $this->token['data'] .= $char . $chars;
-                    }
-                break;
-
-                case 'commentEndDash':
-                    /* Consume the next input character: */
-                    $char = $this->stream->char();
-
-                    if($char === '-') {
-                        /* U+002D HYPHEN-MINUS (-)
-                        Switch to the comment end state  */
-                        $state = 'commentEnd';
-
-                    } elseif($char === false) {
-                        /* EOF
-                        Parse error. Emit the comment token. Reconsume the EOF character
-                        in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'eof-in-comment-end-dash'
-                        ));
-                        $this->emitToken($this->token);
-                        $this->stream->unget();
-                        $state = 'data';
-
-                    } else {
-                        /* Anything 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;
-                        $state = 'comment';
-                    }
-                break;
-
-                case 'commentEnd':
-                    /* Consume the next input character: */
-                    $char = $this->stream->char();
-
-                    if($char === '>') {
-                        /* U+003E GREATER-THAN SIGN (>)
-                        Emit the comment token. Switch to the data state. */
-                        $this->emitToken($this->token);
-                        $state = 'data';
-
-                    } elseif($char === '-') {
-                        /* U+002D HYPHEN-MINUS (-)
-                        Parse error. Append a U+002D HYPHEN-MINUS (-) character
-                        to the comment token's data. Stay in the comment end
-                        state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'unexpected-dash-after-double-dash-in-comment'
-                        ));
-                        $this->token['data'] .= '-';
-
-                    } elseif($char === false) {
-                        /* EOF
-                        Parse error. Emit the comment token. Reconsume the
-                        EOF character in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'eof-in-comment-double-dash'
-                        ));
-                        $this->emitToken($this->token);
-                        $this->stream->unget();
-                        $state = 'data';
-
-                    } else {
-                        /* Anything else
-                        Parse error. Append two U+002D HYPHEN-MINUS (-)
-                        characters and the input character to the comment token's
-                        data. Switch to the comment state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'unexpected-char-in-comment'
-                        ));
-                        $this->token['data'] .= '--'.$char;
-                        $state = 'comment';
-                    }
-                break;
-
-                case 'doctype':
-                    /* Consume the next input character: */
-                    $char = $this->stream->char();
-
-                    if($char === "\t" || $char === "\n" || $char === "\x0c" || $char === ' ') {
-                        /* U+0009 CHARACTER TABULATION
-                           U+000A LINE FEED (LF)
-                           U+000C FORM FEED (FF)
-                           U+0020 SPACE
-                        Switch to the before DOCTYPE name state. */
-                        $state = 'beforeDoctypeName';
-
-                    } else {
-                        /* Anything else
-                        Parse error. Reconsume the current character in the
-                        before DOCTYPE name state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'need-space-after-doctype'
-                        ));
-                        $this->stream->unget();
-                        $state = 'beforeDoctypeName';
-                    }
-                break;
-
-                case 'beforeDoctypeName':
-                    /* Consume the next input character: */
-                    $char = $this->stream->char();
-
-                    if($char === "\t" || $char === "\n" || $char === "\x0c" || $char === ' ') {
-                        /* U+0009 CHARACTER TABULATION
-                           U+000A LINE FEED (LF)
-                           U+000C FORM FEED (FF)
-                           U+0020 SPACE
-                        Stay in the before DOCTYPE name state. */
-
-                    } elseif($char === '>') {
-                        /* U+003E GREATER-THAN SIGN (>)
-                        Parse error. Create a new DOCTYPE token. Set its
-                        force-quirks flag to on. Emit the token. Switch to the
-                        data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'expected-doctype-name-but-got-right-bracket'
-                        ));
-                        $this->emitToken(array(
-                            'name' => '',
-                            'type' => self::DOCTYPE,
-                            'force-quirks' => true,
-                            'error' => true
-                        ));
-
-                        $state = 'data';
-
-                    } elseif('A' <= $char && $char <= 'Z') {
-                        /* U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z
-                        Create a new DOCTYPE token. Set the token's name to the
-                        lowercase version of the input character (add 0x0020 to
-                        the character's code point). Switch to the DOCTYPE name
-                        state. */
-                        $this->token = array(
-                            'name' => strtolower($char),
-                            'type' => self::DOCTYPE,
-                            'error' => true
-                        );
-
-                        $state = 'doctypeName';
-
-                    } elseif($char === false) {
-                        /* EOF
-                        Parse error. Create a new DOCTYPE token. Set its
-                        force-quirks flag to on. Emit the token. Reconsume the
-                        EOF character in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'expected-doctype-name-but-got-eof'
-                        ));
-                        $this->emitToken(array(
-                            'name' => '',
-                            'type' => self::DOCTYPE,
-                            'force-quirks' => true,
-                            'error' => true
-                        ));
-
-                        $this->stream->unget();
-                        $state = 'data';
-
-                    } else {
-                        /* Anything else
-                        Create a new DOCTYPE token. Set the token's name to the
-                        current input character. Switch to the DOCTYPE name state. */
-                        $this->token = array(
-                            'name' => $char,
-                            'type' => self::DOCTYPE,
-                            'error' => true
-                        );
-
-                        $state = 'doctypeName';
-                    }
-                break;
-
-                case 'doctypeName':
-                    /* Consume the next input character: */
-                    $char = $this->stream->char();
-
-                    if($char === "\t" || $char === "\n" || $char === "\x0c" || $char === ' ') {
-                        /* U+0009 CHARACTER TABULATION
-                           U+000A LINE FEED (LF)
-                           U+000C FORM FEED (FF)
-                           U+0020 SPACE
-                        Switch to the after DOCTYPE name state. */
-                        $state = 'afterDoctypeName';
-
-                    } elseif($char === '>') {
-                        /* U+003E GREATER-THAN SIGN (>)
-                        Emit the current DOCTYPE token. Switch to the data state. */
-                        $this->emitToken($this->token);
-                        $state = 'data';
-
-                    } elseif('A' <= $char && $char <= 'Z') {
-                        /* U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z
-                        Append the lowercase version of the input character
-                        (add 0x0020 to the character's code point) to the current
-                        DOCTYPE token's name. Stay in the DOCTYPE name state. */
-                        $this->token['name'] .= strtolower($char);
-
-                    } elseif($char === false) {
-                        /* EOF
-                        Parse error. Set the DOCTYPE token's force-quirks flag
-                        to on. Emit that DOCTYPE token. Reconsume the EOF
-                        character in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'eof-in-doctype-name'
-                        ));
-                        $this->token['force-quirks'] = true;
-                        $this->emitToken($this->token);
-                        $this->stream->unget();
-                        $state = 'data';
-
-                    } else {
-                        /* Anything else
-                        Append the current input character to the current
-                        DOCTYPE token's name. Stay in the DOCTYPE name state. */
-                        $this->token['name'] .= $char;
-                    }
-
-                    // XXX this is probably some sort of quirks mode designation,
-                    // check tree-builder to be sure. In general 'error' needs
-                    // to be specc'ified, this probably means removing it at the end
-                    $this->token['error'] = ($this->token['name'] === 'HTML')
-                        ? false
-                        : true;
-                break;
-
-                case 'afterDoctypeName':
-                    /* Consume the next input character: */
-                    $char = $this->stream->char();
-
-                    if($char === "\t" || $char === "\n" || $char === "\x0c" || $char === ' ') {
-                        /* U+0009 CHARACTER TABULATION
-                           U+000A LINE FEED (LF)
-                           U+000C FORM FEED (FF)
-                           U+0020 SPACE
-                        Stay in the after DOCTYPE name state. */
-
-                    } elseif($char === '>') {
-                        /* U+003E GREATER-THAN SIGN (>)
-                        Emit the current DOCTYPE token. Switch to the data state. */
-                        $this->emitToken($this->token);
-                        $state = 'data';
-
-                    } elseif($char === false) {
-                        /* EOF
-                        Parse error. Set the DOCTYPE token's force-quirks flag
-                        to on. Emit that DOCTYPE token. Reconsume the EOF
-                        character in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'eof-in-doctype'
-                        ));
-                        $this->token['force-quirks'] = true;
-                        $this->emitToken($this->token);
-                        $this->stream->unget();
-                        $state = 'data';
-
-                    } else {
-                        /* Anything else */
-
-                        $nextSix = strtoupper($char . $this->stream->charsWhile(self::ALPHA, 5));
-                        if ($nextSix === 'PUBLIC') {
-                            /* If the next six characters are an ASCII
-                            case-insensitive match for the word "PUBLIC", then
-                            consume those characters and switch to the before
-                            DOCTYPE public identifier state. */
-                            $state = 'beforeDoctypePublicIdentifier';
-
-                        } elseif ($nextSix === 'SYSTEM') {
-                            /* Otherwise, if the next six characters are an ASCII
-                            case-insensitive match for the word "SYSTEM", then
-                            consume those characters and switch to the before
-                            DOCTYPE system identifier state. */
-                            $state = 'beforeDoctypeSystemIdentifier';
-
-                        } else {
-                            /* Otherwise, this is the parse error. Set the DOCTYPE
-                            token's force-quirks flag to on. Switch to the bogus
-                            DOCTYPE state. */
-                            $this->emitToken(array(
-                                'type' => self::PARSEERROR,
-                                'data' => 'expected-space-or-right-bracket-in-doctype'
-                            ));
-                            $this->token['force-quirks'] = true;
-                            $this->token['error'] = true;
-                            $state = 'bogusDoctype';
-                        }
-                    }
-                break;
-
-                case 'beforeDoctypePublicIdentifier':
-                    /* Consume the next input character: */
-                    $char = $this->stream->char();
-
-                    if($char === "\t" || $char === "\n" || $char === "\x0c" || $char === ' ') {
-                        /* U+0009 CHARACTER TABULATION
-                           U+000A LINE FEED (LF)
-                           U+000C FORM FEED (FF)
-                           U+0020 SPACE
-                        Stay in the before DOCTYPE public identifier state. */
-                    } elseif ($char === '"') {
-                        /* U+0022 QUOTATION MARK (")
-                        Set the DOCTYPE token's public identifier to the empty
-                        string (not missing), then switch to the DOCTYPE public
-                        identifier (double-quoted) state. */
-                        $this->token['public'] = '';
-                        $state = 'doctypePublicIdentifierDoubleQuoted';
-                    } elseif ($char === "'") {
-                        /* U+0027 APOSTROPHE (')
-                        Set the DOCTYPE token's public identifier to the empty
-                        string (not missing), then switch to the DOCTYPE public
-                        identifier (single-quoted) state. */
-                        $this->token['public'] = '';
-                        $state = 'doctypePublicIdentifierSingleQuoted';
-                    } elseif ($char === '>') {
-                        /* Parse error. Set the DOCTYPE token's force-quirks flag
-                        to on. Emit that DOCTYPE token. Switch to the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'unexpected-end-of-doctype'
-                        ));
-                        $this->token['force-quirks'] = true;
-                        $this->emitToken($this->token);
-                        $state = 'data';
-                    } elseif ($char === false) {
-                        /* Parse error. Set the DOCTYPE token's force-quirks
-                        flag to on. Emit that DOCTYPE token. Reconsume the EOF
-                        character in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'eof-in-doctype'
-                        ));
-                        $this->token['force-quirks'] = true;
-                        $this->emitToken($this->token);
-                        $this->stream->unget();
-                        $state = 'data';
-                    } else {
-                        /* Parse error. Set the DOCTYPE token's force-quirks flag
-                        to on. Switch to the bogus DOCTYPE state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'unexpected-char-in-doctype'
-                        ));
-                        $this->token['force-quirks'] = true;
-                        $state = 'bogusDoctype';
-                    }
-                break;
-
-                case 'doctypePublicIdentifierDoubleQuoted':
-                    /* Consume the next input character: */
-                    $char = $this->stream->char();
-
-                    if ($char === '"') {
-                        /* U+0022 QUOTATION MARK (")
-                        Switch to the after DOCTYPE public identifier state. */
-                        $state = 'afterDoctypePublicIdentifier';
-                    } elseif ($char === '>') {
-                        /* U+003E GREATER-THAN SIGN (>)
-                        Parse error. Set the DOCTYPE token's force-quirks flag
-                        to on. Emit that DOCTYPE token. Switch to the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'unexpected-end-of-doctype'
-                        ));
-                        $this->token['force-quirks'] = true;
-                        $this->emitToken($this->token);
-                        $state = 'data';
-                    } elseif ($char === false) {
-                        /* EOF
-                        Parse error. Set the DOCTYPE token's force-quirks flag
-                        to on. Emit that DOCTYPE token. Reconsume the EOF
-                        character in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'eof-in-doctype'
-                        ));
-                        $this->token['force-quirks'] = true;
-                        $this->emitToken($this->token);
-                        $this->stream->unget();
-                        $state = 'data';
-                    } else {
-                        /* Anything else
-                        Append the current input character to the current
-                        DOCTYPE token's public identifier. Stay in the DOCTYPE
-                        public identifier (double-quoted) state. */
-                        $this->token['public'] .= $char;
-                    }
-                break;
-
-                case 'doctypePublicIdentifierSingleQuoted':
-                    /* Consume the next input character: */
-                    $char = $this->stream->char();
-
-                    if ($char === "'") {
-                        /* U+0027 APOSTROPHE (')
-                        Switch to the after DOCTYPE public identifier state. */
-                        $state = 'afterDoctypePublicIdentifier';
-                    } elseif ($char === '>') {
-                        /* U+003E GREATER-THAN SIGN (>)
-                        Parse error. Set the DOCTYPE token's force-quirks flag
-                        to on. Emit that DOCTYPE token. Switch to the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'unexpected-end-of-doctype'
-                        ));
-                        $this->token['force-quirks'] = true;
-                        $this->emitToken($this->token);
-                        $state = 'data';
-                    } elseif ($char === false) {
-                        /* EOF
-                        Parse error. Set the DOCTYPE token's force-quirks flag
-                        to on. Emit that DOCTYPE token. Reconsume the EOF
-                        character in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'eof-in-doctype'
-                        ));
-                        $this->token['force-quirks'] = true;
-                        $this->emitToken($this->token);
-                        $this->stream->unget();
-                        $state = 'data';
-                    } else {
-                        /* Anything else
-                        Append the current input character to the current
-                        DOCTYPE token's public identifier. Stay in the DOCTYPE
-                        public identifier (double-quoted) state. */
-                        $this->token['public'] .= $char;
-                    }
-                break;
-
-                case 'afterDoctypePublicIdentifier':
-                    /* Consume the next input character: */
-                    $char = $this->stream->char();
-
-                    if($char === "\t" || $char === "\n" || $char === "\x0c" || $char === ' ') {
-                        /* U+0009 CHARACTER TABULATION
-                           U+000A LINE FEED (LF)
-                           U+000C FORM FEED (FF)
-                           U+0020 SPACE
-                        Stay in the after DOCTYPE public identifier state. */
-                    } elseif ($char === '"') {
-                        /* U+0022 QUOTATION MARK (")
-                        Set the DOCTYPE token's system identifier to the
-                        empty string (not missing), then switch to the DOCTYPE
-                        system identifier (double-quoted) state. */
-                        $this->token['system'] = '';
-                        $state = 'doctypeSystemIdentifierDoubleQuoted';
-                    } elseif ($char === "'") {
-                        /* U+0027 APOSTROPHE (')
-                        Set the DOCTYPE token's system identifier to the
-                        empty string (not missing), then switch to the DOCTYPE
-                        system identifier (single-quoted) state. */
-                        $this->token['system'] = '';
-                        $state = 'doctypeSystemIdentifierSingleQuoted';
-                    } elseif ($char === '>') {
-                        /* U+003E GREATER-THAN SIGN (>)
-                        Emit the current DOCTYPE token. Switch to the data state. */
-                        $this->emitToken($this->token);
-                        $state = 'data';
-                    } elseif ($char === false) {
-                        /* Parse error. Set the DOCTYPE token's force-quirks
-                        flag to on. Emit that DOCTYPE token. Reconsume the EOF
-                        character in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'eof-in-doctype'
-                        ));
-                        $this->token['force-quirks'] = true;
-                        $this->emitToken($this->token);
-                        $this->stream->unget();
-                        $state = 'data';
-                    } else {
-                        /* Anything else
-                        Parse error. Set the DOCTYPE token's force-quirks flag
-                        to on. Switch to the bogus DOCTYPE state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'unexpected-char-in-doctype'
-                        ));
-                        $this->token['force-quirks'] = true;
-                        $state = 'bogusDoctype';
-                    }
-                break;
-
-                case 'beforeDoctypeSystemIdentifier':
-                    /* Consume the next input character: */
-                    $char = $this->stream->char();
-
-                    if($char === "\t" || $char === "\n" || $char === "\x0c" || $char === ' ') {
-                        /* U+0009 CHARACTER TABULATION
-                           U+000A LINE FEED (LF)
-                           U+000C FORM FEED (FF)
-                           U+0020 SPACE
-                        Stay in the before DOCTYPE system identifier state. */
-                    } elseif ($char === '"') {
-                        /* U+0022 QUOTATION MARK (")
-                        Set the DOCTYPE token's system identifier to the empty
-                        string (not missing), then switch to the DOCTYPE system
-                        identifier (double-quoted) state. */
-                        $this->token['system'] = '';
-                        $state = 'doctypeSystemIdentifierDoubleQuoted';
-                    } elseif ($char === "'") {
-                        /* U+0027 APOSTROPHE (')
-                        Set the DOCTYPE token's system identifier to the empty
-                        string (not missing), then switch to the DOCTYPE system
-                        identifier (single-quoted) state. */
-                        $this->token['system'] = '';
-                        $state = 'doctypeSystemIdentifierSingleQuoted';
-                    } elseif ($char === '>') {
-                        /* Parse error. Set the DOCTYPE token's force-quirks flag
-                        to on. Emit that DOCTYPE token. Switch to the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'unexpected-char-in-doctype'
-                        ));
-                        $this->token['force-quirks'] = true;
-                        $this->emitToken($this->token);
-                        $state = 'data';
-                    } elseif ($char === false) {
-                        /* Parse error. Set the DOCTYPE token's force-quirks
-                        flag to on. Emit that DOCTYPE token. Reconsume the EOF
-                        character in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'eof-in-doctype'
-                        ));
-                        $this->token['force-quirks'] = true;
-                        $this->emitToken($this->token);
-                        $this->stream->unget();
-                        $state = 'data';
-                    } else {
-                        /* Parse error. Set the DOCTYPE token's force-quirks flag
-                        to on. Switch to the bogus DOCTYPE state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'unexpected-char-in-doctype'
-                        ));
-                        $this->token['force-quirks'] = true;
-                        $state = 'bogusDoctype';
-                    }
-                break;
-
-                case 'doctypeSystemIdentifierDoubleQuoted':
-                    /* Consume the next input character: */
-                    $char = $this->stream->char();
-
-                    if ($char === '"') {
-                        /* U+0022 QUOTATION MARK (")
-                        Switch to the after DOCTYPE system identifier state. */
-                        $state = 'afterDoctypeSystemIdentifier';
-                    } elseif ($char === '>') {
-                        /* U+003E GREATER-THAN SIGN (>)
-                        Parse error. Set the DOCTYPE token's force-quirks flag
-                        to on. Emit that DOCTYPE token. Switch to the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'unexpected-end-of-doctype'
-                        ));
-                        $this->token['force-quirks'] = true;
-                        $this->emitToken($this->token);
-                        $state = 'data';
-                    } elseif ($char === false) {
-                        /* EOF
-                        Parse error. Set the DOCTYPE token's force-quirks flag
-                        to on. Emit that DOCTYPE token. Reconsume the EOF
-                        character in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'eof-in-doctype'
-                        ));
-                        $this->token['force-quirks'] = true;
-                        $this->emitToken($this->token);
-                        $this->stream->unget();
-                        $state = 'data';
-                    } else {
-                        /* Anything else
-                        Append the current input character to the current
-                        DOCTYPE token's system identifier. Stay in the DOCTYPE
-                        system identifier (double-quoted) state. */
-                        $this->token['system'] .= $char;
-                    }
-                break;
-
-                case 'doctypeSystemIdentifierSingleQuoted':
-                    /* Consume the next input character: */
-                    $char = $this->stream->char();
-
-                    if ($char === "'") {
-                        /* U+0027 APOSTROPHE (')
-                        Switch to the after DOCTYPE system identifier state. */
-                        $state = 'afterDoctypeSystemIdentifier';
-                    } elseif ($char === '>') {
-                        /* U+003E GREATER-THAN SIGN (>)
-                        Parse error. Set the DOCTYPE token's force-quirks flag
-                        to on. Emit that DOCTYPE token. Switch to the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'unexpected-end-of-doctype'
-                        ));
-                        $this->token['force-quirks'] = true;
-                        $this->emitToken($this->token);
-                        $state = 'data';
-                    } elseif ($char === false) {
-                        /* EOF
-                        Parse error. Set the DOCTYPE token's force-quirks flag
-                        to on. Emit that DOCTYPE token. Reconsume the EOF
-                        character in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'eof-in-doctype'
-                        ));
-                        $this->token['force-quirks'] = true;
-                        $this->emitToken($this->token);
-                        $this->stream->unget();
-                        $state = 'data';
-                    } else {
-                        /* Anything else
-                        Append the current input character to the current
-                        DOCTYPE token's system identifier. Stay in the DOCTYPE
-                        system identifier (double-quoted) state. */
-                        $this->token['system'] .= $char;
-                    }
-                break;
-
-                case 'afterDoctypeSystemIdentifier':
-                    /* Consume the next input character: */
-                    $char = $this->stream->char();
-
-                    if($char === "\t" || $char === "\n" || $char === "\x0c" || $char === ' ') {
-                        /* U+0009 CHARACTER TABULATION
-                           U+000A LINE FEED (LF)
-                           U+000C FORM FEED (FF)
-                           U+0020 SPACE
-                        Stay in the after DOCTYPE system identifier state. */
-                    } elseif ($char === '>') {
-                        /* U+003E GREATER-THAN SIGN (>)
-                        Emit the current DOCTYPE token. Switch to the data state. */
-                        $this->emitToken($this->token);
-                        $state = 'data';
-                    } elseif ($char === false) {
-                        /* Parse error. Set the DOCTYPE token's force-quirks
-                        flag to on. Emit that DOCTYPE token. Reconsume the EOF
-                        character in the data state. */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'eof-in-doctype'
-                        ));
-                        $this->token['force-quirks'] = true;
-                        $this->emitToken($this->token);
-                        $this->stream->unget();
-                        $state = 'data';
-                    } else {
-                        /* Anything else
-                        Parse error. Switch to the bogus DOCTYPE state.
-                        (This does not set the DOCTYPE token's force-quirks
-                        flag to on.) */
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'unexpected-char-in-doctype'
-                        ));
-                        $state = 'bogusDoctype';
-                    }
-                break;
-
-                case 'bogusDoctype':
-                    /* Consume the next input character: */
-                    $char = $this->stream->char();
-
-                    if ($char === '>') {
-                        /* U+003E GREATER-THAN SIGN (>)
-                        Emit the DOCTYPE token. Switch to the data state. */
-                        $this->emitToken($this->token);
-                        $state = 'data';
-
-                    } elseif($char === false) {
-                        /* EOF
-                        Emit the DOCTYPE token. Reconsume the EOF character in
-                        the data state. */
-                        $this->emitToken($this->token);
-                        $this->stream->unget();
-                        $state = 'data';
-
-                    } else {
-                        /* Anything else
-                        Stay in the bogus DOCTYPE state. */
-                    }
-                break;
-
-                // case 'cdataSection':
-
-            }
-        }
-    }
-
-    /**
-     * Returns a serialized representation of the tree.
-     */
-    public function save() {
-        return $this->tree->save();
-    }
-
-    /**
-     * Returns the input stream.
-     */
-    public function stream() {
-        return $this->stream;
-    }
-
-    private function consumeCharacterReference($allowed = false, $inattr = false) {
-        // This goes quite far against spec, and is far closer to the Python
-        // impl., mainly because we don't do the large unconsuming the spec
-        // requires.
-
-        // All consumed characters.
-        $chars = $this->stream->char();
-
-        /* This section defines how to consume a character
-        reference. This definition is used when parsing character
-        references in text and in attributes.
-
-        The behavior depends on the identity of the next character
-        (the one immediately after the U+0026 AMPERSAND character): */
-
-        if (
-            $chars[0] === "\x09" ||
-            $chars[0] === "\x0A" ||
-            $chars[0] === "\x0C" ||
-            $chars[0] === "\x20" ||
-            $chars[0] === '<' ||
-            $chars[0] === '&' ||
-            $chars === false ||
-            $chars[0] === $allowed
-        ) {
-            /* U+0009 CHARACTER TABULATION
-               U+000A LINE FEED (LF)
-               U+000C FORM FEED (FF)
-               U+0020 SPACE
-               U+003C LESS-THAN SIGN
-               U+0026 AMPERSAND
-               EOF
-               The additional allowed character, if there is one
-            Not a character reference. No characters are consumed,
-            and nothing is returned. (This is not an error, either.) */
-            // We already consumed, so unconsume.
-            $this->stream->unget();
-            return '&';
-        } elseif ($chars[0] === '#') {
-            /* Consume the U+0023 NUMBER SIGN. */
-            // Um, yeah, we already did that.
-            /* The behavior further depends on the character after
-            the U+0023 NUMBER SIGN: */
-            $chars .= $this->stream->char();
-            if (isset($chars[1]) && ($chars[1] === 'x' || $chars[1] === 'X')) {
-                /* U+0078 LATIN SMALL LETTER X
-                   U+0058 LATIN CAPITAL LETTER X */
-                /* Consume the X. */
-                // Um, yeah, we already did that.
-                /* 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, 0123456789, ABCDEF, abcdef). */
-                $char_class = self::HEX;
-                /* When it comes to interpreting the
-                number, interpret it as a hexadecimal number. */
-                $hex = true;
-            } else {
-                /* Anything else */
-                // Unconsume because we shouldn't have consumed this.
-                $chars = $chars[0];
-                $this->stream->unget();
-                /* Follow the steps below, but using the range of
-                characters U+0030 DIGIT ZERO through to U+0039 DIGIT
-                NINE (i.e. just 0123456789). */
-                $char_class = self::DIGIT;
-                /* When it comes to interpreting the number,
-                interpret it as a decimal number. */
-                $hex = false;
-            }
-
-            /* Consume as many characters as match the range of characters given above. */
-            $consumed = $this->stream->charsWhile($char_class);
-            if ($consumed === '' || $consumed === false) {
-                /* If no characters match the range, then don't consume
-                any characters (and unconsume the U+0023 NUMBER SIGN
-                character and, if appropriate, the X character). This
-                is a parse error; nothing is returned. */
-                $this->emitToken(array(
-                    'type' => self::PARSEERROR,
-                    'data' => 'expected-numeric-entity'
-                ));
-                return '&' . $chars;
-            } else {
-                /* Otherwise, if the next character is a U+003B SEMICOLON,
-                consume that too. If it isn't, there is a parse error. */
-                if ($this->stream->char() !== ';') {
-                    $this->stream->unget();
-                    $this->emitToken(array(
-                        'type' => self::PARSEERROR,
-                        'data' => 'numeric-entity-without-semicolon'
-                    ));
-                }
-
-                /* If one or more characters match the range, then take
-                them all and interpret the string of characters as a number
-                (either hexadecimal or decimal as appropriate). */
-                $codepoint = $hex ? hexdec($consumed) : (int) $consumed;
-
-                /* If that number is one of the numbers in the first column
-                of the following table, then this is a parse error. Find the
-                row with that number in the first column, and return a
-                character token for the Unicode character given in the
-                second column of that row. */
-                $new_codepoint = HTML5_Data::getRealCodepoint($codepoint);
-                if ($new_codepoint) {
-                    $this->emitToken(array(
-                        'type' => self::PARSEERROR,
-                        'data' => 'illegal-windows-1252-entity'
-                    ));
-                    $codepoint = $new_codepoint;
-                } else {
-                    /* Otherwise, if the number is in the range 0x0000 to 0x0008,
-                    U+000B,  U+000E to 0x001F,  0x007F  to 0x009F, 0xD800 to 0xDFFF ,
-                    0xFDD0 to 0xFDEF, or is one of 0xFFFE, 0xFFFF, 0x1FFFE, 0x1FFFF,
-                    0x2FFFE, 0x2FFFF, 0x3FFFE, 0x3FFFF, 0x4FFFE, 0x4FFFF, 0x5FFFE,
-                    0x5FFFF, 0x6FFFE, 0x6FFFF, 0x7FFFE, 0x7FFFF, 0x8FFFE, 0x8FFFF,
-                    0x9FFFE, 0x9FFFF, 0xAFFFE, 0xAFFFF, 0xBFFFE, 0xBFFFF, 0xCFFFE,
-                    0xCFFFF, 0xDFFFE, 0xDFFFF, 0xEFFFE, 0xEFFFF, 0xFFFFE, 0xFFFFF,
-                    0x10FFFE, or 0x10FFFF, or is higher than 0x10FFFF, then this
-                    is a parse error; return a character token for the U+FFFD
-                    REPLACEMENT CHARACTER character instead. */
-                    // && has higher precedence than ||
-                    if (
-                        $codepoint >= 0x0000 && $codepoint <= 0x0008 ||
-                        $codepoint === 0x000B ||
-                        $codepoint >= 0x000E && $codepoint <= 0x001F ||
-                        $codepoint >= 0x007F && $codepoint <= 0x009F ||
-                        $codepoint >= 0xD800 && $codepoint <= 0xDFFF ||
-                        $codepoint >= 0xFDD0 && $codepoint <= 0xFDEF ||
-                        ($codepoint & 0xFFFE) === 0xFFFE ||
-                        $codepoint > 0x10FFFF
-                    ) {
-                        $this->emitToken(array(
-                            'type' => self::PARSEERROR,
-                            'data' => 'illegal-codepoint-for-numeric-entity'
-                        ));
-                        $codepoint = 0xFFFD;
-                    }
-                }
-
-                /* Otherwise, return a character token for the Unicode
-                character whose code point is that number. */
-                return HTML5_Data::utf8chr($codepoint);
-            }
-
-        } else {
-            /* Anything else */
-
-            /* Consume the maximum number of characters possible,
-            with the consumed characters matching one of the
-            identifiers in the first column of the named character
-            references table (in a case-sensitive manner). */
-
-            // we will implement this by matching the longest
-            // alphanumeric + semicolon string, and then working
-            // our way backwards
-            $chars .= $this->stream->charsWhile(self::DIGIT . self::ALPHA . ';', HTML5_Data::getNamedCharacterReferenceMaxLength() - 1);
-            $len = strlen($chars);
-
-            $refs = HTML5_Data::getNamedCharacterReferences();
-            $codepoint = false;
-            for($c = $len; $c > 0; $c--) {
-                $id = substr($chars, 0, $c);
-                if(isset($refs[$id])) {
-                    $codepoint = $refs[$id];
-                    break;
-                }
-            }
-
-            /* If no match can be made, then this is a parse error.
-            No characters are consumed, and nothing is returned. */
-            if (!$codepoint) {
-                $this->emitToken(array(
-                    'type' => self::PARSEERROR,
-                    'data' => 'expected-named-entity'
-                ));
-                return '&' . $chars;
-            }
-
-            /* If the last character matched is not a U+003B SEMICOLON
-            (;), there is a parse error. */
-            $semicolon = true;
-            if (substr($id, -1) !== ';') {
-                $this->emitToken(array(
-                    'type' => self::PARSEERROR,
-                    'data' => 'named-entity-without-semicolon'
-                ));
-                $semicolon = false;
-            }
-
-
-            /* If the character reference is being consumed as part of
-            an attribute, and the last character matched is not a
-            U+003B SEMICOLON (;), and the next character is in the
-            range U+0030 DIGIT ZERO to U+0039 DIGIT NINE, U+0041
-            LATIN CAPITAL LETTER A to U+005A LATIN CAPITAL LETTER Z,
-            or U+0061 LATIN SMALL LETTER A to U+007A LATIN SMALL LETTER Z,
-            then, for historical reasons, all the characters that were
-            matched after the U+0026 AMPERSAND (&) must be unconsumed,
-            and nothing is returned. */
-            if (
-                $inattr && !$semicolon &&
-                strspn(substr($chars, $c, 1), self::ALPHA . self::DIGIT)
-            ) {
-                return '&' . $chars;
-            }
-
-            /* Otherwise, return a character token for the character
-            corresponding to the character reference name (as given
-            by the second column of the named character references table). */
-            return HTML5_Data::utf8chr($codepoint) . substr($chars, $c);
-        }
-    }
-
-    private function characterReferenceInAttributeValue($allowed = false) {
-        /* Attempt to consume a character reference. */
-        $entity = $this->consumeCharacterReference($allowed, true);
-
-        /* If nothing is returned, append a U+0026 AMPERSAND
-        character to the current attribute's value.
-
-        Otherwise, append the returned character token to the
-        current attribute's value. */
-        $char = (!$entity)
-            ? '&'
-            : $entity;
-
-        $last = count($this->token['attr']) - 1;
-        $this->token['attr'][$last]['value'] .= $char;
-
-        /* Finally, switch back to the attribute value state that you
-        were in when were switched into this state. */
-    }
-
-    /**
-     * Emits a token, passing it on to the tree builder.
-     */
-    protected function emitToken($token, $checkStream = true) {
-        if ($checkStream) {
-            // Emit errors from input stream.
-            while ($this->stream->errors) {
-                $this->emitToken(array_shift($this->stream->errors), false);
-            }
-        }
-
-        // the current structure of attributes is not a terribly good one
-        $this->tree->emitToken($token);
-
-        if(is_int($this->tree->content_model)) {
-            $this->content_model = $this->tree->content_model;
-            $this->tree->content_model = null;
-
-        } elseif($token['type'] === self::ENDTAG) {
-            $this->content_model = self::PCDATA;
-        }
-    }
-}
-
diff --git a/library/HTML5/TreeBuilder.php b/library/HTML5/TreeBuilder.php
deleted file mode 100644
index 578e73682..000000000
--- a/library/HTML5/TreeBuilder.php
+++ /dev/null
@@ -1,3721 +0,0 @@
-<?php
-
-/*
-
-Copyright 2007 Jeroen van der Meer <http://jero.net/>
-Copyright 2009 Edward Z. Yang <edwardzyang@thewritingpot.com>
-
-Permission is hereby granted, free of charge, to any person obtaining a
-copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be included
-in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
-CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
-TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
-SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-*/
-
-// Tags for FIX ME!!!: (in order of priority)
-//      XXX - should be fixed NAO!
-//      XERROR - with regards to parse errors
-//      XSCRIPT - with regards to scripting mode
-//      XENCODING - with regards to encoding (for reparsing tests)
-
-class HTML5_TreeBuilder {
-    public $stack = array();
-    public $content_model;
-
-    private $mode;
-    private $original_mode;
-    private $secondary_mode;
-    private $dom;
-    // Whether or not normal insertion of nodes should actually foster
-    // parent (used in one case in spec)
-    private $foster_parent = false;
-    private $a_formatting  = array();
-
-    private $head_pointer = null;
-    private $form_pointer = null;
-
-    private $flag_frameset_ok = true;
-    private $flag_force_quirks = false;
-    private $ignored = false;
-    private $quirks_mode = null;
-    // this gets to 2 when we want to ignore the next lf character, and
-    // is decrement at the beginning of each processed token (this way,
-    // code can check for (bool)$ignore_lf_token, but it phases out
-    // appropriately)
-    private $ignore_lf_token = 0;
-    private $fragment = false;
-    private $root;
-
-    private $scoping = array('applet','button','caption','html','marquee','object','table','td','th', 'svg:foreignObject');
-    private $formatting = array('a','b','big','code','em','font','i','nobr','s','small','strike','strong','tt','u');
-    private $special = array('address','area','article','aside','base','basefont','bgsound',
-    'blockquote','body','br','center','col','colgroup','command','dd','details','dialog','dir','div','dl',
-    'dt','embed','fieldset','figure','footer','form','frame','frameset','h1','h2','h3','h4','h5',
-    'h6','head','header','hgroup','hr','iframe','img','input','isindex','li','link',
-    'listing','menu','meta','nav','noembed','noframes','noscript','ol',
-    'p','param','plaintext','pre','script','select','spacer','style',
-    'tbody','textarea','tfoot','thead','title','tr','ul','wbr');
-
-    // Tree construction modes
-    const INITIAL           = 0;
-    const BEFORE_HTML       = 1;
-    const BEFORE_HEAD       = 2;
-    const IN_HEAD           = 3;
-    const IN_HEAD_NOSCRIPT  = 4;
-    const AFTER_HEAD        = 5;
-    const IN_BODY           = 6;
-    const IN_CDATA_RCDATA   = 7;
-    const IN_TABLE          = 8;
-    const IN_CAPTION        = 9;
-    const IN_COLUMN_GROUP   = 10;
-    const IN_TABLE_BODY     = 11;
-    const IN_ROW            = 12;
-    const IN_CELL           = 13;
-    const IN_SELECT         = 14;
-    const IN_SELECT_IN_TABLE= 15;
-    const IN_FOREIGN_CONTENT= 16;
-    const AFTER_BODY        = 17;
-    const IN_FRAMESET       = 18;
-    const AFTER_FRAMESET    = 19;
-    const AFTER_AFTER_BODY  = 20;
-    const AFTER_AFTER_FRAMESET = 21;
-
-    /**
-     * Converts a magic number to a readable name. Use for debugging.
-     */
-    private function strConst($number) {
-        static $lookup;
-        if (!$lookup) {
-            $r = new ReflectionClass('HTML5_TreeBuilder');
-            $lookup = array_flip($r->getConstants());
-        }
-        return $lookup[$number];
-    }
-
-    // The different types of elements.
-    const SPECIAL    = 100;
-    const SCOPING    = 101;
-    const FORMATTING = 102;
-    const PHRASING   = 103;
-
-    // Quirks modes in $quirks_mode
-    const NO_QUIRKS             = 200;
-    const QUIRKS_MODE           = 201;
-    const LIMITED_QUIRKS_MODE   = 202;
-
-    // Marker to be placed in $a_formatting
-    const MARKER     = 300;
-
-    // Namespaces for foreign content
-    const NS_HTML   = null; // to prevent DOM from requiring NS on everything
-    const NS_MATHML = 'http://www.w3.org/1998/Math/MathML';
-    const NS_SVG    = 'http://www.w3.org/2000/svg';
-    const NS_XLINK  = 'http://www.w3.org/1999/xlink';
-    const NS_XML    = 'http://www.w3.org/XML/1998/namespace';
-    const NS_XMLNS  = 'http://www.w3.org/2000/xmlns/';
-
-    public function __construct() {
-        $this->mode = self::INITIAL;
-        $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, $mode = null) {
-        // XXX: ignore parse errors... why are we emitting them, again?
-        if ($token['type'] === HTML5_Tokenizer::PARSEERROR) return;
-        if ($mode === null) $mode = $this->mode;
-
-        /*
-        $backtrace = debug_backtrace();
-        if ($backtrace[1]['class'] !== 'HTML5_TreeBuilder') echo "--\n";
-        echo $this->strConst($mode);
-        if ($this->original_mode) echo " (originally ".$this->strConst($this->original_mode).")";
-        echo "\n  ";
-        token_dump($token);
-        $this->printStack();
-        $this->printActiveFormattingElements();
-        if ($this->foster_parent) echo "  -> this is a foster parent mode\n";
-        */
-
-        if ($this->ignore_lf_token) $this->ignore_lf_token--;
-        $this->ignored = false;
-        // indenting is a little wonky, this can be changed later on
-        switch ($mode) {
-
-    case self::INITIAL:
-
-        /* A character token that is one of U+0009 CHARACTER TABULATION,
-         * U+000A LINE FEED (LF), U+000C FORM FEED (FF),  or U+0020 SPACE */
-        if ($token['type'] === HTML5_Tokenizer::SPACECHARACTER) {
-            /* Ignore the token. */
-            $this->ignored = true;
-        } elseif ($token['type'] === HTML5_Tokenizer::DOCTYPE) {
-            if (
-                $token['name'] !== 'html' || !empty($token['public']) ||
-                !empty($token['system']) || $token !== 'about:legacy-compat'
-            ) {
-                /* If the DOCTYPE token's name is not a case-sensitive match
-                 * for the string "html", or if the token's public identifier
-                 * is not missing, or if the token's system identifier is
-                 * neither missing nor a case-sensitive match for the string
-                 * "about:legacy-compat", then there is a parse error (this
-                 * is the DOCTYPE parse error). */
-                // DOCTYPE parse error
-            }
-            /* Append a DocumentType node to the Document node, with the name
-             * attribute set to the name given in the DOCTYPE token, or the
-             * empty string if the name was missing; the publicId attribute
-             * set to the public identifier given in the DOCTYPE token, or
-             * the empty string if the public identifier was missing; the
-             * systemId attribute set to the system identifier given in the
-             * DOCTYPE token, or the empty string if the system identifier
-             * was missing; and the other attributes specific to
-             * DocumentType objects set to null and empty lists as
-             * appropriate. Associate the DocumentType node with the
-             * Document object so that it is returned as the value of the
-             * doctype attribute of the Document object. */
-            if (!isset($token['public'])) $token['public'] = null;
-            if (!isset($token['system'])) $token['system'] = null;
-            // Yes this is hacky. I'm kind of annoyed that I can't appendChild
-            // a doctype to DOMDocument. Maybe I haven't chanted the right
-            // syllables.
-            $impl = new DOMImplementation();
-            // This call can fail for particularly pathological cases (namely,
-            // the qualifiedName parameter ($token['name']) could be missing.
-            if ($token['name']) {
-                $doctype = $impl->createDocumentType($token['name'], $token['public'], $token['system']);
-                $this->dom->appendChild($doctype);
-            } else {
-                // It looks like libxml's not actually *able* to express this case.
-                // So... don't.
-                $this->dom->emptyDoctype = true;
-            }
-            $public = is_null($token['public']) ? false : strtolower($token['public']);
-            $system = is_null($token['system']) ? false : strtolower($token['system']);
-            $publicStartsWithForQuirks = array(
-             "+//silmaril//dtd html pro v0r11 19970101//",
-             "-//advasoft ltd//dtd html 3.0 aswedit + extensions//",
-             "-//as//dtd html 3.0 aswedit + extensions//",
-             "-//ietf//dtd html 2.0 level 1//",
-             "-//ietf//dtd html 2.0 level 2//",
-             "-//ietf//dtd html 2.0 strict level 1//",
-             "-//ietf//dtd html 2.0 strict level 2//",
-             "-//ietf//dtd html 2.0 strict//",
-             "-//ietf//dtd html 2.0//",
-             "-//ietf//dtd html 2.1e//",
-             "-//ietf//dtd html 3.0//",
-             "-//ietf//dtd html 3.2 final//",
-             "-//ietf//dtd html 3.2//",
-             "-//ietf//dtd html 3//",
-             "-//ietf//dtd html level 0//",
-             "-//ietf//dtd html level 1//",
-             "-//ietf//dtd html level 2//",
-             "-//ietf//dtd html level 3//",
-             "-//ietf//dtd html strict level 0//",
-             "-//ietf//dtd html strict level 1//",
-             "-//ietf//dtd html strict level 2//",
-             "-//ietf//dtd html strict level 3//",
-             "-//ietf//dtd html strict//",
-             "-//ietf//dtd html//",
-             "-//metrius//dtd metrius presentational//",
-             "-//microsoft//dtd internet explorer 2.0 html strict//",
-             "-//microsoft//dtd internet explorer 2.0 html//",
-             "-//microsoft//dtd internet explorer 2.0 tables//",
-             "-//microsoft//dtd internet explorer 3.0 html strict//",
-             "-//microsoft//dtd internet explorer 3.0 html//",
-             "-//microsoft//dtd internet explorer 3.0 tables//",
-             "-//netscape comm. corp.//dtd html//",
-             "-//netscape comm. corp.//dtd strict html//",
-             "-//o'reilly and associates//dtd html 2.0//",
-             "-//o'reilly and associates//dtd html extended 1.0//",
-             "-//o'reilly and associates//dtd html extended relaxed 1.0//",
-             "-//spyglass//dtd html 2.0 extended//",
-             "-//sq//dtd html 2.0 hotmetal + extensions//",
-             "-//sun microsystems corp.//dtd hotjava html//",
-             "-//sun microsystems corp.//dtd hotjava strict html//",
-             "-//w3c//dtd html 3 1995-03-24//",
-             "-//w3c//dtd html 3.2 draft//",
-             "-//w3c//dtd html 3.2 final//",
-             "-//w3c//dtd html 3.2//",
-             "-//w3c//dtd html 3.2s draft//",
-             "-//w3c//dtd html 4.0 frameset//",
-             "-//w3c//dtd html 4.0 transitional//",
-             "-//w3c//dtd html experimental 19960712//",
-             "-//w3c//dtd html experimental 970421//",
-             "-//w3c//dtd w3 html//",
-             "-//w3o//dtd w3 html 3.0//",
-             "-//webtechs//dtd mozilla html 2.0//",
-             "-//webtechs//dtd mozilla html//",
-            );
-            $publicSetToForQuirks = array(
-             "-//w3o//dtd w3 html strict 3.0//",
-             "-/w3c/dtd html 4.0 transitional/en",
-             "html",
-            );
-            $publicStartsWithAndSystemForQuirks = array(
-             "-//w3c//dtd html 4.01 frameset//",
-             "-//w3c//dtd html 4.01 transitional//",
-            );
-            $publicStartsWithForLimitedQuirks = array(
-             "-//w3c//dtd xhtml 1.0 frameset//",
-             "-//w3c//dtd xhtml 1.0 transitional//",
-            );
-            $publicStartsWithAndSystemForLimitedQuirks = array(
-             "-//w3c//dtd html 4.01 frameset//",
-             "-//w3c//dtd html 4.01 transitional//",
-            );
-            // first, do easy checks
-            if (
-                !empty($token['force-quirks']) ||
-                strtolower($token['name']) !== 'html'
-            ) {
-                $this->quirks_mode = self::QUIRKS_MODE;
-            } else {
-                do {
-                    if ($system) {
-                        foreach ($publicStartsWithAndSystemForQuirks as $x) {
-                            if (strncmp($public, $x, strlen($x)) === 0) {
-                                $this->quirks_mode = self::QUIRKS_MODE;
-                                break;
-                            }
-                        }
-                        if (!is_null($this->quirks_mode)) break;
-                        foreach ($publicStartsWithAndSystemForLimitedQuirks as $x) {
-                            if (strncmp($public, $x, strlen($x)) === 0) {
-                                $this->quirks_mode = self::LIMITED_QUIRKS_MODE;
-                                break;
-                            }
-                        }
-                        if (!is_null($this->quirks_mode)) break;
-                    }
-                    foreach ($publicSetToForQuirks as $x) {
-                        if ($public === $x) {
-                            $this->quirks_mode = self::QUIRKS_MODE;
-                            break;
-                        }
-                    }
-                    if (!is_null($this->quirks_mode)) break;
-                    foreach ($publicStartsWithForLimitedQuirks as $x) {
-                        if (strncmp($public, $x, strlen($x)) === 0) {
-                            $this->quirks_mode = self::LIMITED_QUIRKS_MODE;
-                        }
-                    }
-                    if (!is_null($this->quirks_mode)) break;
-                    if ($system === "http://www.ibm.com/data/dtd/v11/ibmxhtml1-transitional.dtd") {
-                        $this->quirks_mode = self::QUIRKS_MODE;
-                        break;
-                    }
-                    foreach ($publicStartsWithForQuirks as $x) {
-                        if (strncmp($public, $x, strlen($x)) === 0) {
-                            $this->quirks_mode = self::QUIRKS_MODE;
-                            break;
-                        }
-                    }
-                    if (is_null($this->quirks_mode)) {
-                        $this->quirks_mode = self::NO_QUIRKS;
-                    }
-                } while (false);
-            }
-            $this->mode = self::BEFORE_HTML;
-        } else {
-            // parse error
-            /* Switch the insertion mode to "before html", then reprocess the
-             * current token. */
-            $this->mode = self::BEFORE_HTML;
-            $this->quirks_mode = self::QUIRKS_MODE;
-            $this->emitToken($token);
-        }
-        break;
-
-    case self::BEFORE_HTML:
-
-        /* A DOCTYPE token */
-        if($token['type'] === HTML5_Tokenizer::DOCTYPE) {
-            // Parse error. Ignore the token.
-            $this->ignored = true;
-
-        /* A comment token */
-        } elseif($token['type'] === HTML5_Tokenizer::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_Tokenizer::SPACECHARACTER) {
-            /* Ignore the token. */
-            $this->ignored = true;
-
-        /* A start tag whose tag name is "html" */
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG && $token['name'] == 'html') {
-            /* Create an element for the token in the HTML namespace. Append it 
-             * to the Document  object. Put this element in the stack of open 
-             * elements. */
-            $html = $this->insertElement($token, false);
-            $this->dom->appendChild($html);
-            $this->stack[] = $html;
-
-            $this->mode = self::BEFORE_HEAD;
-
-        } else {
-            /* Create an html element. Append it to the Document object. Put
-             * this element in the stack of open elements. */
-            $html = $this->dom->createElementNS(self::NS_HTML, 'html');
-            $this->dom->appendChild($html);
-            $this->stack[] = $html;
-
-            /* Switch the insertion mode to "before head", then reprocess the
-             * current token. */
-            $this->mode = self::BEFORE_HEAD;
-            $this->emitToken($token);
-        }
-        break;
-
-    case self::BEFORE_HEAD:
-
-        /* 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_Tokenizer::SPACECHARACTER) {
-            /* Ignore the token. */
-            $this->ignored = true;
-
-        /* A comment token */
-        } elseif($token['type'] === HTML5_Tokenizer::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 DOCTYPE token */
-        } elseif($token['type'] === HTML5_Tokenizer::DOCTYPE) {
-            /* Parse error. Ignore the token */
-            $this->ignored = true;
-            // parse error
-
-        /* A start tag token with the tag name "html" */
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG && $token['name'] === 'html') {
-            /* Process the token using the rules for the "in body"
-             * insertion mode. */
-            $this->processWithRulesFor($token, self::IN_BODY);
-
-        /* A start tag token with the tag name "head" */
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG && $token['name'] === 'head') {
-            /* Insert an HTML element for the token. */
-            $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;
-
-        /* An end tag whose tag name is one of: "head", "body", "html", "br" */
-        } elseif(
-            $token['type'] === HTML5_Tokenizer::ENDTAG && (
-                $token['name'] === 'head' || $token['name'] === 'body' ||
-                $token['name'] === 'html' || $token['name'] === 'br'
-        )) {
-            /* Act as if a start tag token with the tag name "head" and no
-             * attributes had been seen, then reprocess the current token. */
-            $this->emitToken(array(
-                'name' => 'head',
-                'type' => HTML5_Tokenizer::STARTTAG,
-                'attr' => array()
-            ));
-            $this->emitToken($token);
-
-        /* Any other end tag */
-        } elseif($token['type'] === HTML5_Tokenizer::ENDTAG) {
-            /* Parse error. Ignore the token. */
-            $this->ignored = true;
-
-        } else {
-            /* Act as if a start tag token with the tag name "head" and no
-             * attributes had been seen, then reprocess the current token.
-             * Note: This will result in an empty head element being
-             * generated, with the current token being reprocessed in the
-             * "after head" insertion mode. */
-            $this->emitToken(array(
-                'name' => 'head',
-                'type' => HTML5_Tokenizer::STARTTAG,
-                'attr' => array()
-            ));
-            $this->emitToken($token);
-        }
-        break;
-
-    case self::IN_HEAD:
-
-        /* 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_Tokenizer::SPACECHARACTER) {
-            /* Insert the character into the current node. */
-            $this->insertText($token['data']);
-
-        /* A comment token */
-        } elseif($token['type'] === HTML5_Tokenizer::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 DOCTYPE token */
-        } elseif($token['type'] === HTML5_Tokenizer::DOCTYPE) {
-            /* Parse error. Ignore the token. */
-            $this->ignored = true;
-            // parse error
-
-        /* A start tag whose tag name is "html" */
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG &&
-        $token['name'] === 'html') {
-            $this->processWithRulesFor($token, self::IN_BODY);
-
-        /* A start tag whose tag name is one of: "base", "command", "link" */
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG &&
-        ($token['name'] === 'base' || $token['name'] === 'command' ||
-        $token['name'] === 'link')) {
-            /* Insert an HTML element for the token. Immediately pop the
-             * current node off the stack of open elements. */
-            $this->insertElement($token);
-            array_pop($this->stack);
-
-            // YYY: Acknowledge the token's self-closing flag, if it is set.
-
-        /* A start tag whose tag name is "meta" */
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG && $token['name'] === 'meta') {
-            /* Insert an HTML element for the token. Immediately pop the
-             * current node off the stack of open elements. */
-            $this->insertElement($token);
-            array_pop($this->stack);
-
-            // XERROR: Acknowledge the token's self-closing flag, if it is set.
-
-            // XENCODING: If the element has a charset attribute, and its value is a
-            // supported encoding, and the confidence is currently tentative,
-            // then change the encoding to the encoding given by the value of
-            // the charset attribute.
-            //
-            // Otherwise, if the element has a content attribute, and applying
-            // the algorithm for extracting an encoding from a Content-Type to
-            // its value returns a supported encoding encoding, and the
-            // confidence is currently tentative, then change the encoding to
-            // the encoding encoding.
-
-        /* A start tag with the tag name "title" */
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG && $token['name'] === 'title') {
-            $this->insertRCDATAElement($token);
-
-        /* A start tag whose tag name is "noscript", if the scripting flag is enabled, or
-         * A start tag whose tag name is one of: "noframes", "style" */
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG &&
-        ($token['name'] === 'noscript' || $token['name'] === 'noframes' || $token['name'] === 'style')) {
-            // XSCRIPT: Scripting flag not respected
-            $this->insertCDATAElement($token);
-
-        // XSCRIPT: Scripting flag disable not implemented
-
-        /* A start tag with the tag name "script" */
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG && $token['name'] === 'script') {
-            /* 1. Create an element for the token in the HTML namespace. */
-            $node = $this->insertElement($token, false);
-
-            /* 2. Mark the element as being "parser-inserted" */
-            // Uhhh... XSCRIPT
-
-            /* 3. If the parser was originally created for the HTML
-             * fragment parsing algorithm, then mark the script element as 
-             * "already executed". (fragment case) */
-            // ditto... XSCRIPT
-
-            /* 4. Append the new element to the current node  and push it onto 
-             * the stack of open elements.  */
-            end($this->stack)->appendChild($node);
-            $this->stack[] = $node;
-            // I guess we could squash these together
-
-            /* 6. Let the original insertion mode be the current insertion mode. */
-            $this->original_mode = $this->mode;
-            /* 7. Switch the insertion mode to "in CDATA/RCDATA" */
-            $this->mode = self::IN_CDATA_RCDATA;
-            /* 5. Switch the tokeniser's content model flag to the CDATA state. */
-            $this->content_model = HTML5_Tokenizer::CDATA;
-
-        /* An end tag with the tag name "head" */
-        } elseif($token['type'] === HTML5_Tokenizer::ENDTAG && $token['name'] === 'head') {
-            /* Pop the current node (which will be the head element) off the stack of open elements. */
-            array_pop($this->stack);
-
-            /* Change the insertion mode to "after head". */
-            $this->mode = self::AFTER_HEAD;
-
-        // Slight logic inversion here to minimize duplication
-        /* A start tag with the tag name "head". */
-        /* An end tag whose tag name is not one of: "body", "html", "br" */
-        } elseif(($token['type'] === HTML5_Tokenizer::STARTTAG && $token['name'] === 'head') ||
-        ($token['type'] === HTML5_Tokenizer::ENDTAG && $token['name'] !== 'html' &&
-        $token['name'] !== 'body' && $token['name'] !== 'br')) {
-            // Parse error. Ignore the token.
-            $this->ignored = true;
-
-        /* Anything else */
-        } else {
-            /* Act as if an end tag token with the tag name "head" had been
-             * seen, and reprocess the current token. */
-            $this->emitToken(array(
-                'name' => 'head',
-                'type' => HTML5_Tokenizer::ENDTAG
-            ));
-
-            /* Then, reprocess the current token. */
-            $this->emitToken($token);
-        }
-        break;
-
-    case self::IN_HEAD_NOSCRIPT:
-        if ($token['type'] === HTML5_Tokenizer::DOCTYPE) {
-            // parse error
-        } elseif ($token['type'] === HTML5_Tokenizer::STARTTAG && $token['name'] === 'html') {
-            $this->processWithRulesFor($token, self::IN_BODY);
-        } elseif ($token['type'] === HTML5_Tokenizer::ENDTAG && $token['name'] === 'noscript') {
-            /* Pop the current node (which will be a noscript element) from the
-             * stack of open elements; the new current node will be a head
-             * element. */
-            array_pop($this->stack);
-            $this->mode = self::IN_HEAD;
-        } elseif (
-            ($token['type'] === HTML5_Tokenizer::SPACECHARACTER) ||
-            ($token['type'] === HTML5_Tokenizer::COMMENT) ||
-            ($token['type'] === HTML5_Tokenizer::STARTTAG && (
-                $token['name'] === 'link' || $token['name'] === 'meta' ||
-                $token['name'] === 'noframes' || $token['name'] === 'style'))) {
-            $this->processWithRulesFor($token, self::IN_HEAD);
-        // inverted logic
-        } elseif (
-            ($token['type'] === HTML5_Tokenizer::STARTTAG && (
-                $token['name'] === 'head' || $token['name'] === 'noscript')) ||
-            ($token['type'] === HTML5_Tokenizer::ENDTAG &&
-                $token['name'] !== 'br')) {
-            // parse error
-        } else {
-            // parse error
-            $this->emitToken(array(
-                'type' => HTML5_Tokenizer::ENDTAG,
-                'name' => 'noscript',
-            ));
-            $this->emitToken($token);
-        }
-        break;
-
-    case self::AFTER_HEAD:
-        /* 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_Tokenizer::SPACECHARACTER) {
-            /* Append the character to the current node. */
-            $this->insertText($token['data']);
-
-        /* A comment token */
-        } elseif($token['type'] === HTML5_Tokenizer::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 ($token['type'] === HTML5_Tokenizer::DOCTYPE) {
-            // parse error
-
-        } elseif ($token['type'] === HTML5_Tokenizer::STARTTAG && $token['name'] === 'html') {
-            $this->processWithRulesFor($token, self::IN_BODY);
-
-        /* A start tag token with the tag name "body" */
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG && $token['name'] === 'body') {
-            $this->insertElement($token);
-
-            /* Set the frameset-ok flag to "not ok". */
-            $this->flag_frameset_ok = false;
-
-            /* 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_Tokenizer::STARTTAG && $token['name'] === 'frameset') {
-            /* Insert a frameset element for the token. */
-            $this->insertElement($token);
-
-            /* Change the insertion mode to "in frameset". */
-            $this->mode = self::IN_FRAMESET;
-
-        /* A start tag token whose tag name is one of: "base", "link", "meta",
-        "script", "style", "title" */
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG && in_array($token['name'],
-        array('base', 'link', 'meta', 'noframes', 'script', 'style', 'title'))) {
-            // parse error
-            /* Push the node pointed to by the head element pointer onto the
-             * stack of open elements. */
-            $this->stack[] = $this->head_pointer;
-            $this->processWithRulesFor($token, self::IN_HEAD);
-            array_splice($this->stack, array_search($this->head_pointer, $this->stack, true), 1);
-
-        // inversion of specification
-        } elseif(
-        ($token['type'] === HTML5_Tokenizer::STARTTAG && $token['name'] === 'head') ||
-        ($token['type'] === HTML5_Tokenizer::ENDTAG &&
-            $token['name'] !== 'body' && $token['name'] !== 'html' &&
-            $token['name'] !== 'br')) {
-            // parse error
-
-        /* Anything else */
-        } else {
-            $this->emitToken(array(
-                'name' => 'body',
-                'type' => HTML5_Tokenizer::STARTTAG,
-                'attr' => array()
-            ));
-            $this->flag_frameset_ok = true;
-            $this->emitToken($token);
-        }
-        break;
-
-    case self::IN_BODY:
-        /* Handle the token as follows: */
-
-        switch($token['type']) {
-            /* A character token */
-            case HTML5_Tokenizer::CHARACTER:
-            case HTML5_Tokenizer::SPACECHARACTER:
-                /* Reconstruct the active formatting elements, if any. */
-                $this->reconstructActiveFormattingElements();
-
-                /* Append the token's character to the current node. */
-                $this->insertText($token['data']);
-
-                /* If the token is not one of U+0009 CHARACTER TABULATION,
-                 * U+000A LINE FEED (LF), U+000C FORM FEED (FF),  or U+0020
-                 * SPACE, then set the frameset-ok flag to "not ok". */
-                // i.e., if any of the characters is not whitespace
-                if (strlen($token['data']) !== strspn($token['data'], HTML5_Tokenizer::WHITESPACE)) {
-                    $this->flag_frameset_ok = false;
-                }
-            break;
-
-            /* A comment token */
-            case HTML5_Tokenizer::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_Tokenizer::DOCTYPE:
-                // parse error
-            break;
-
-            case HTML5_Tokenizer::STARTTAG:
-            switch($token['name']) {
-                case 'html':
-                    // parse error
-                    /* For each attribute on the token, check to see if the
-                     * attribute is already present on the top element of the
-                     * stack of open elements. If it is not, add the attribute
-                     * and its corresponding value to that element. */
-                    foreach($token['attr'] as $attr) {
-                        if(!$this->stack[0]->hasAttribute($attr['name'])) {
-                            $this->stack[0]->setAttribute($attr['name'], $attr['value']);
-                        }
-                    }
-                break;
-
-                case 'base': case 'command': case 'link': case 'meta': case 'noframes':
-                case 'script': case 'style': case 'title':
-                    /* Process the token as if the insertion mode had been "in
-                    head". */
-                    $this->processWithRulesFor($token, self::IN_HEAD);
-                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.
-                    (fragment case) */
-                    if(count($this->stack) === 1 || $this->stack[1]->tagName !== 'body') {
-                        $this->ignored = true;
-                        // Ignore
-
-                    /* Otherwise, for each attribute on the token, check to see
-                    if the attribute is already present on the body element (the
-                    second element)    on the stack of open elements. If it is not,
-                    add the attribute and its corresponding value to that
-                    element. */
-                    } else {
-                        foreach($token['attr'] as $attr) {
-                            if(!$this->stack[1]->hasAttribute($attr['name'])) {
-                                $this->stack[1]->setAttribute($attr['name'], $attr['value']);
-                            }
-                        }
-                    }
-                break;
-
-                case 'frameset':
-                    // parse error
-                    /* If the second element on the stack of open elements is
-                     * not a body element, or, if the stack of open elements
-                     * has only one node on it, then ignore the token.
-                     * (fragment case) */
-                    if(count($this->stack) === 1 || $this->stack[1]->tagName !== 'body') {
-                        $this->ignored = true;
-                        // Ignore
-                    } elseif (!$this->flag_frameset_ok) {
-                        $this->ignored = true;
-                        // Ignore
-                    } else {
-                        /* 1. Remove the second element on the stack of open 
-                         * elements from its parent node, if it has one.  */
-                        if($this->stack[1]->parentNode) {
-                            $this->stack[1]->parentNode->removeChild($this->stack[1]);
-                        }
-
-                        /* 2. Pop all the nodes from the bottom of the stack of 
-                         * open elements, from the current node up to the root 
-                         * html element. */
-                        array_splice($this->stack, 1);
-
-                        $this->insertElement($token);
-                        $this->mode = self::IN_FRAMESET;
-                    }
-                break;
-
-                // in spec, there is a diversion here
-
-                case 'address': case 'article': case 'aside': case 'blockquote':
-                case 'center': case 'datagrid': case 'details': case 'dialog': case 'dir':
-                case 'div': case 'dl': case 'fieldset': case 'figure': case 'footer':
-                case 'header': case 'hgroup': case 'menu': case 'nav':
-                case 'ol': case 'p': case 'section': case 'ul':
-                    /* If the stack of open elements has a p element in scope,
-                    then act as if an end tag with the tag name p had been
-                    seen. */
-                    if($this->elementInScope('p')) {
-                        $this->emitToken(array(
-                            'name' => 'p',
-                            'type' => HTML5_Tokenizer::ENDTAG
-                        ));
-                    }
-
-                    /* Insert an HTML element for the token. */
-                    $this->insertElement($token);
-                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_Tokenizer::ENDTAG
-                        ));
-                    }
-
-                    /* If the current node is an element whose tag name is one
-                     * of "h1", "h2", "h3", "h4", "h5", or "h6", then this is a
-                     * parse error; pop the current node off the stack of open
-                     * elements. */
-                    $peek = array_pop($this->stack);
-                    if (in_array($peek->tagName, array("h1", "h2", "h3", "h4", "h5", "h6"))) {
-                        // parse error
-                    } else {
-                        $this->stack[] = $peek;
-                    }
-
-                    /* Insert an HTML element for the token. */
-                    $this->insertElement($token);
-                break;
-
-                case 'pre': case 'listing':
-                    /* 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_Tokenizer::ENDTAG
-                        ));
-                    }
-                    $this->insertElement($token);
-                    /* If the next token is a U+000A LINE FEED (LF) character
-                     * token, then ignore that token and move on to the next
-                     * one. (Newlines at the start of pre blocks are ignored as
-                     * an authoring convenience.) */
-                    $this->ignore_lf_token = 2;
-                    $this->flag_frameset_ok = false;
-                break;
-
-                /* A start tag whose tag name is "form" */
-                case 'form':
-                    /* If the form element pointer is not null, ignore the
-                    token with a parse error. */
-                    if($this->form_pointer !== null) {
-                        $this->ignored = true;
-                        // Ignore.
-
-                    /* Otherwise: */
-                    } else {
-                        /* If the stack of open elements has a p element in
-                        scope, then act as if an end tag with the tag name p
-                        had been seen. */
-                        if($this->elementInScope('p')) {
-                            $this->emitToken(array(
-                                'name' => 'p',
-                                'type' => HTML5_Tokenizer::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;
-
-                // condensed specification
-                case 'li': case 'dd': case 'dt':
-                    /* 1. Set the frameset-ok flag to "not ok". */
-                    $this->flag_frameset_ok = false;
-
-                    $stack_length = count($this->stack) - 1;
-                    for($n = $stack_length; 0 <= $n; $n--) {
-                        /* 2. Initialise node to be the current node (the
-                        bottommost node of the stack). */
-                        $stop = false;
-                        $node = $this->stack[$n];
-                        $cat  = $this->getElementCategory($node);
-
-                        // for case 'li':
-                        /* 3. If node is an li element, then act as if an end
-                         * tag with the tag name "li" had been seen, then jump
-                         * to the last step.  */
-                        // for case 'dd': case 'dt':
-                        /* If node is a dd or dt element, then act as if an end
-                         * tag with the same tag name as node had been seen, then
-                         * jump to the last step. */
-                        if(($token['name'] === 'li' && $node->tagName === 'li') ||
-                        ($token['name'] !== 'li' && ($node->tagName === 'dd' || $node->tagName === 'dt'))) { // limited conditional
-                            $this->emitToken(array(
-                                'type' => HTML5_Tokenizer::ENDTAG,
-                                'name' => $node->tagName,
-                            ));
-                            break;
-                        }
-
-                        /* 4. If node is not in the formatting category, and is
-                        not    in the phrasing category, and is not an address,
-                        div or p element, then stop this algorithm. */
-                        if($cat !== self::FORMATTING && $cat !== self::PHRASING &&
-                        $node->tagName !== 'address' && $node->tagName !== 'div' &&
-                        $node->tagName !== 'p') {
-                            break;
-                        }
-
-                        /* 5. Otherwise, set node to the previous entry in the
-                         * stack of open elements and return to step 2. */
-                    }
-
-                    /* 6. This is the last step. */
-
-                    /* If the stack of open elements has a p  element in scope,
-                    then act as if an end tag with the tag name p had been
-                    seen. */
-                    if($this->elementInScope('p')) {
-                        $this->emitToken(array(
-                            'name' => 'p',
-                            'type' => HTML5_Tokenizer::ENDTAG
-                        ));
-                    }
-
-                    /* 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_Tokenizer::ENDTAG
-                        ));
-                    }
-
-                    /* Insert an HTML element for the token. */
-                    $this->insertElement($token);
-
-                    $this->content_model = HTML5_Tokenizer::PLAINTEXT;
-                break;
-
-                // more diversions
-
-                /* 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]->tagName === 'a') {
-                            $a = $this->a_formatting[$n];
-                            $this->emitToken(array(
-                                'name' => 'a',
-                                'type' => HTML5_Tokenizer::ENDTAG
-                            ));
-                            if (in_array($a, $this->a_formatting)) {
-                                $a_i = array_search($a, $this->a_formatting, true);
-                                if($a_i !== false) array_splice($this->a_formatting, $a_i, 1);
-                            }
-                            if (in_array($a, $this->stack)) {
-                                $a_i = array_search($a, $this->stack, true);
-                                if ($a_i !== false) array_splice($this->stack, $a_i, 1);
-                            }
-                            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;
-
-                case 'b': case 'big': case 'code': case 'em': case 'font': case 'i':
-                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;
-
-                case 'nobr':
-                    /* Reconstruct the active formatting elements, if any. */
-                    $this->reconstructActiveFormattingElements();
-
-                    /* If the stack of open elements has a nobr element in
-                     * scope, then this is a parse error; act as if an end tag
-                     * with the tag name "nobr" had been seen, then once again
-                     * reconstruct the active formatting elements, if any. */
-                    if ($this->elementInScope('nobr')) {
-                        $this->emitToken(array(
-                            'name' => 'nobr',
-                            'type' => HTML5_Tokenizer::ENDTAG,
-                        ));
-                        $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[] = $el;
-                break;
-
-                // another diversion
-
-                /* A start tag token whose tag name is "button" */
-                case 'button':
-                    /* If the stack of open elements has a button element in scope,
-                    then this is a parse error; act as if an end tag with the tag
-                    name "button" had been seen, then reprocess the token. (We don't
-                    do that. Unnecessary.) (I hope you're right! -- ezyang) */
-                    if($this->elementInScope('button')) {
-                        $this->emitToken(array(
-                            'name' => 'button',
-                            'type' => HTML5_Tokenizer::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;
-
-                    $this->flag_frameset_ok = false;
-                break;
-
-                case 'applet': 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;
-
-                    $this->flag_frameset_ok = false;
-                break;
-
-                // spec diversion
-
-                /* A start tag whose tag name is "table" */
-                case 'table':
-                    /* If the stack of open elements has a p element in scope,
-                    then act as if an end tag with the tag name p had been seen. */
-                    if($this->quirks_mode !== self::QUIRKS_MODE &&
-                    $this->elementInScope('p')) {
-                        $this->emitToken(array(
-                            'name' => 'p',
-                            'type' => HTML5_Tokenizer::ENDTAG
-                        ));
-                    }
-
-                    /* Insert an HTML element for the token. */
-                    $this->insertElement($token);
-
-                    $this->flag_frameset_ok = false;
-
-                    /* 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 'input': case 'keygen': 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);
-
-                    // YYY: Acknowledge the token's self-closing flag, if it is set.
-
-                    $this->flag_frameset_ok = false;
-                break;
-
-                case 'param': case 'source':
-                    /* Insert an HTML element for the token. */
-                    $this->insertElement($token);
-
-                    /* Immediately pop the current node off the stack of open elements. */
-                    array_pop($this->stack);
-
-                    // YYY: Acknowledge the token's self-closing flag, if it is set.
-                break;
-
-                /* A start tag whose tag name is "hr" */
-                case 'hr':
-                    /* If the stack of open elements has a p element in scope,
-                    then act as if an end tag with the tag name p had been seen. */
-                    if($this->elementInScope('p')) {
-                        $this->emitToken(array(
-                            'name' => 'p',
-                            'type' => HTML5_Tokenizer::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);
-
-                    // YYY: Acknowledge the token's self-closing flag, if it is set.
-
-                    $this->flag_frameset_ok = false;
-                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';
-                    $this->emitToken($token);
-                break;
-
-                /* A start tag whose tag name is "isindex" */
-                case 'isindex':
-                    /* Parse error. */
-
-                    /* 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. */
-                        /* If the token has an attribute called "action", set
-                         * the action attribute on the resulting form
-                         * element to the value of the "action" attribute of
-                         * the token. */
-                        $attr = array();
-                        $action = $this->getAttr($token, 'action');
-                        if ($action !== false) {
-                            $attr[] = array('name' => 'action', 'value' => $action);
-                        }
-                        $this->emitToken(array(
-                            'name' => 'form',
-                            'type' => HTML5_Tokenizer::STARTTAG,
-                            'attr' => $attr
-                        ));
-
-                        /* Act as if a start tag token with the tag name "hr" had
-                        been seen. */
-                        $this->emitToken(array(
-                            'name' => 'hr',
-                            'type' => HTML5_Tokenizer::STARTTAG,
-                            'attr' => array()
-                        ));
-
-                        /* Act as if a start tag token with the tag name "p" had
-                        been seen. */
-                        $this->emitToken(array(
-                            'name' => 'p',
-                            'type' => HTML5_Tokenizer::STARTTAG,
-                            'attr' => array()
-                        ));
-
-                        /* Act as if a start tag token with the tag name "label"
-                        had been seen. */
-                        $this->emitToken(array(
-                            'name' => 'label',
-                            'type' => HTML5_Tokenizer::STARTTAG,
-                            'attr' => array()
-                        ));
-
-                        /* Act as if a stream of character tokens had been seen. */
-                        $prompt = $this->getAttr($token, 'prompt');
-                        if ($prompt === false) {
-                            $prompt = 'This is a searchable index. '.
-                            'Insert your search keywords here: ';
-                        }
-                        $this->emitToken(array(
-                            'data' => $prompt,
-                            'type' => HTML5_Tokenizer::CHARACTER,
-                        ));
-
-                        /* 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). */
-                        $attr = array();
-                        foreach ($token['attr'] as $keypair) {
-                            if ($keypair['name'] === 'name' || $keypair['name'] === 'action' ||
-                                $keypair['name'] === 'prompt') continue;
-                            $attr[] = $keypair;
-                        }
-                        $attr[] = array('name' => 'name', 'value' => 'isindex');
-
-                        $this->emitToken(array(
-                            'name' => 'input',
-                            'type' => HTML5_Tokenizer::STARTTAG,
-                            'attr' => $attr
-                        ));
-
-                        /* Act as if an end tag token with the tag name "label"
-                        had been seen. */
-                        $this->emitToken(array(
-                            'name' => 'label',
-                            'type' => HTML5_Tokenizer::ENDTAG
-                        ));
-
-                        /* Act as if an end tag token with the tag name "p" had
-                        been seen. */
-                        $this->emitToken(array(
-                            'name' => 'p',
-                            'type' => HTML5_Tokenizer::ENDTAG
-                        ));
-
-                        /* Act as if a start tag token with the tag name "hr" had
-                        been seen. */
-                        $this->emitToken(array(
-                            'name' => 'hr',
-                            'type' => HTML5_Tokenizer::STARTTAG
-                        ));
-
-                        /* Act as if an end tag token with the tag name "form" had
-                        been seen. */
-                        $this->emitToken(array(
-                            'name' => 'form',
-                            'type' => HTML5_Tokenizer::ENDTAG
-                        ));
-                    } else {
-                        $this->ignored = true;
-                    }
-                break;
-
-                /* A start tag whose tag name is "textarea" */
-                case 'textarea':
-                    $this->insertElement($token);
-
-                    /* If the next token is a U+000A LINE FEED (LF)
-                     * character token, then ignore that token and move on to
-                     * the next one. (Newlines at the start of textarea
-                     * elements are ignored as an authoring convenience.)
-                     * need flag, see also <pre> */
-                    $this->ignore_lf_token = 2;
-
-                    $this->original_mode = $this->mode;
-                    $this->flag_frameset_ok = false;
-                    $this->mode = self::IN_CDATA_RCDATA;
-
-                    /* Switch the tokeniser's content model flag to the
-                    RCDATA state. */
-                    $this->content_model = HTML5_Tokenizer::RCDATA;
-                break;
-
-                /* A start tag token whose tag name is "xmp" */
-                case 'xmp':
-                    /* Reconstruct the active formatting elements, if any. */
-                    $this->reconstructActiveFormattingElements();
-
-                    $this->flag_frameset_ok = false;
-
-                    $this->insertCDATAElement($token);
-                break;
-
-                case 'iframe':
-                    $this->flag_frameset_ok = false;
-                    $this->insertCDATAElement($token);
-                break;
-
-                case 'noembed': case 'noscript':
-                    // XSCRIPT: should check scripting flag
-                    $this->insertCDATAElement($token);
-                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);
-
-                    $this->flag_frameset_ok = false;
-
-                    /* If the insertion mode is one of in table", "in caption",
-                     * "in column group", "in table body", "in row", or "in
-                     * cell", then switch the insertion mode to "in select in
-                     * table". Otherwise, switch the insertion mode  to "in
-                     * select". */
-                    if (
-                        $this->mode === self::IN_TABLE || $this->mode === self::IN_CAPTION ||
-                        $this->mode === self::IN_COLUMN_GROUP || $this->mode ==+self::IN_TABLE_BODY ||
-                        $this->mode === self::IN_ROW || $this->mode === self::IN_CELL
-                    ) {
-                        $this->mode = self::IN_SELECT_IN_TABLE;
-                    } else {
-                        $this->mode = self::IN_SELECT;
-                    }
-                break;
-
-                case 'option': case 'optgroup':
-                    if ($this->elementInScope('option')) {
-                        $this->emitToken(array(
-                            'name' => 'option',
-                            'type' => HTML5_Tokenizer::ENDTAG,
-                        ));
-                    }
-                    $this->reconstructActiveFormattingElements();
-                    $this->insertElement($token);
-                break;
-
-                case 'rp': case 'rt':
-                    /* If the stack of open elements has a ruby element in scope, then generate
-                     * implied end tags. If the current node is not then a ruby element, this is
-                     * a parse error; pop all the nodes from the current node up to the node
-                     * immediately before the bottommost ruby element on the stack of open elements.
-                     */
-                    if ($this->elementInScope('ruby')) {
-                        $this->generateImpliedEndTags();
-                    }
-                    $peek = false;
-                    do {
-                        if ($peek) {
-                            // parse error
-                        }
-                        $peek = array_pop($this->stack);
-                    } while ($peek->tagName !== 'ruby');
-                    $this->stack[] = $peek; // we popped one too many
-                    $this->insertElement($token);
-                break;
-
-                // spec diversion
-
-                case 'math':
-                    $this->reconstructActiveFormattingElements();
-                    $token = $this->adjustMathMLAttributes($token);
-                    $token = $this->adjustForeignAttributes($token);
-                    $this->insertForeignElement($token, self::NS_MATHML);
-                    if (isset($token['self-closing'])) {
-                        // XERROR: acknowledge the token's self-closing flag
-                        array_pop($this->stack);
-                    }
-                    if ($this->mode !== self::IN_FOREIGN_CONTENT) {
-                        $this->secondary_mode = $this->mode;
-                        $this->mode = self::IN_FOREIGN_CONTENT;
-                    }
-                break;
-
-                case 'svg':
-                    $this->reconstructActiveFormattingElements();
-                    $token = $this->adjustSVGAttributes($token);
-                    $token = $this->adjustForeignAttributes($token);
-                    $this->insertForeignElement($token, self::NS_SVG);
-                    if (isset($token['self-closing'])) {
-                        // XERROR: acknowledge the token's self-closing flag
-                        array_pop($this->stack);
-                    }
-                    if ($this->mode !== self::IN_FOREIGN_CONTENT) {
-                        $this->secondary_mode = $this->mode;
-                        $this->mode = self::IN_FOREIGN_CONTENT;
-                    }
-                break;
-
-                case 'caption': case 'col': case 'colgroup': case 'frame': case 'head':
-                case 'tbody': case 'td': case 'tfoot': case 'th': case 'thead': case 'tr':
-                    // parse error
-                break;
-
-                /* A start tag token not covered by the previous entries */
-                default:
-                    /* Reconstruct the active formatting elements, if any. */
-                    $this->reconstructActiveFormattingElements();
-
-                    $this->insertElement($token);
-                    /* This element will be a phrasing  element. */
-                break;
-            }
-            break;
-
-            case HTML5_Tokenizer::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]->tagName !== 'body') {
-                        $this->ignored = true;
-
-                    /* Otherwise, if there is a node in the stack of open
-                     * elements that is not either a dd element, a dt
-                     * element, an li element, an optgroup element, an
-                     * option element, a p element, an rp element, an rt
-                     * element, a tbody element, a td element, a tfoot
-                     * element, a th element, a thead element, a tr element,
-                     * the body element, or the html element, then this is a
-                     * parse error. */
-                    } else {
-                        // XERROR: implement this check for 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. */
-                    $this->emitToken(array(
-                        'name' => 'body',
-                        'type' => HTML5_Tokenizer::ENDTAG
-                    ));
-
-                    if (!$this->ignored) $this->emitToken($token);
-                break;
-
-                case 'address': case 'article': case 'aside': case 'blockquote':
-                case 'center': case 'datagrid': case 'details': case 'dir':
-                case 'div': case 'dl': case 'fieldset': case 'figure': case 'footer':
-                case 'header': case 'hgroup': case 'listing': case 'menu':
-                case 'nav': case 'ol': case 'pre': case 'section': 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. */
-                        // XERROR: implement parse error logic
-
-                        /* 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. */
-                        do {
-                            $node = array_pop($this->stack);
-                        } while ($node->tagName !== $token['name']);
-                    } else {
-                        // parse error
-                    }
-                break;
-
-                /* An end tag whose tag name is "form" */
-                case 'form':
-                    /* Let node be the element that the form element pointer is set to. */
-                    $node = $this->form_pointer;
-                    /* Set the form element pointer  to null. */
-                    $this->form_pointer = null;
-                    /* If node is null or the stack of open elements does not 
-                        * have node in scope, then this is a parse error; ignore the token. */
-                    if ($node === null || !in_array($node, $this->stack)) {
-                        // parse error
-                        $this->ignored = true;
-                    } else {
-                        /* 1. Generate implied end tags. */
-                        $this->generateImpliedEndTags();
-                        /* 2. If the current node is not node, then this is a parse error.  */
-                        if (end($this->stack) !== $node) {
-                            // parse error
-                        }
-                        /* 3. Remove node from the stack of open elements. */
-                        array_splice($this->stack, array_search($node, $this->stack, true), 1);
-                    }
-
-                break;
-
-                /* An end tag whose tag name is "p" */
-                case 'p':
-                    /* If the stack of open elements has a p element in scope,
-                    then generate implied end tags, except for p elements. */
-                    if($this->elementInScope('p')) {
-                        /* Generate implied end tags, except for elements with
-                         * the same tag name as the token. */
-                        $this->generateImpliedEndTags(array('p'));
-
-                        /* If the current node is not a p element, then this is
-                        a parse error. */
-                        // XERROR: implement
-
-                        /* Pop elements from the stack of open elements  until
-                         * an element with the same tag name as the token has
-                         * been popped from the stack. */
-                        do {
-                            $node = array_pop($this->stack);
-                        } while ($node->tagName !== 'p');
-
-                    } else {
-                        // parse error
-                        $this->emitToken(array(
-                            'name' => 'p',
-                            'type' => HTML5_Tokenizer::STARTTAG,
-                        ));
-                        $this->emitToken($token);
-                    }
-                break;
-
-                /* An end tag whose tag name is "dd", "dt", or "li" */
-                case 'dd': case 'dt': case 'li':
-                    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. */
-                        // XERROR: implement parse error
-
-                        /* Pop elements from the stack of open elements  until
-                         * an element with the same tag name as the token has
-                         * been popped from the stack. */
-                        do {
-                            $node = array_pop($this->stack);
-                        } while ($node->tagName !== $token['name']);
-
-                    } else {
-                        // parse error
-                    }
-                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. */
-                        // XERROR: implement parse error
-
-                        /* 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. */
-                        do {
-                            $node = array_pop($this->stack);
-                        } while (!in_array($node->tagName, $elements));
-                    } else {
-                        // parse error
-                    }
-                break;
-
-                /* An end tag whose tag name is one of: "a", "b", "big", "em",
-                "font", "i", "nobr", "s", "small", "strike", "strong", "tt", "u" */
-                case 'a': case 'b': case 'big': case 'code': case 'em': case 'font':
-                case 'i': case 'nobr': case 's': case 'small': case 'strike':
-                case 'strong': case 'tt': case 'u':
-                    // XERROR: generally speaking this needs parse error logic
-                    /* 1. Let the formatting element be the last element in
-                    the list of active formatting elements that:
-                        * is between the end of the list and the last scope
-                        marker in the list, if any, or the start of the list
-                        otherwise, and
-                        * has the same tag name as the token.
-                    */
-                    while(true) {
-                        for($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']))) {
-                            $this->ignored = true;
-                            break;
-
-                        /* Otherwise, if there is such a node, but that node
-                        is not in the stack of open elements, then this is a
-                        parse error; remove the element from the list, and
-                        abort these steps. */
-                        } elseif(isset($formatting_element) && !$in_stack) {
-                            unset($this->a_formatting[$fe_af_pos]);
-                            $this->a_formatting = array_merge($this->a_formatting);
-                            break;
-                        }
-
-                        /* Otherwise, there is a formatting element and that
-                         * element is in the stack and is in scope. If the
-                         * element is not the current node, this is a parse
-                         * error. In any case, proceed with the algorithm as
-                         * written in the following steps. */
-                        // XERROR: implement me
-
-                        /* 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[$s]);
-
-                            if($category !== self::PHRASING && $category !== self::FORMATTING) {
-                                $furthest_block = $this->stack[$s];
-                                break;
-                            }
-                        }
-
-                        /* 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. 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;
-
-                        /* 6. 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--) {
-                                /* 6.1 Let node be the element immediately
-                                prior to node in the stack of open elements. */
-                                $node = $this->stack[$n];
-
-                                /* 6.2 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, $this->a_formatting, true)) {
-                                    array_splice($this->stack, $n, 1);
-
-                                } else {
-                                    break;
-                                }
-                            }
-
-                            /* 6.3 Otherwise, if node is the formatting
-                            element, then go to the next step in the overall
-                            algorithm. */
-                            if($node === $formatting_element) {
-                                break;
-
-                            /* 6.4 Otherwise, if last node is the furthest
-                            block, then move the aforementioned bookmark to
-                            be immediately after the node in the list of
-                            active formatting elements. */
-                            } elseif($last_node === $furthest_block) {
-                                $bookmark = array_search($node, $this->a_formatting, true) + 1;
-                            }
-
-                            /* 6.5 Create an element for the token for which
-                             * the element node was created, replace the entry
-                             * for node in the list of active formatting
-                             * elements with an entry for the new element,
-                             * replace the entry for node in the stack of open
-                             * elements with an entry for the new element, and
-                             * let node be the new element. */
-                            // we don't know what the token is anymore
-                            $clone = $node->cloneNode();
-                            $a_pos = array_search($node, $this->a_formatting, true);
-                            $s_pos = array_search($node, $this->stack, true);
-                            $this->a_formatting[$a_pos] = $clone;
-                            $this->stack[$s_pos] = $clone;
-                            $node = $clone;
-
-                            /* 6.6 Insert last node into node, first removing
-                            it from its previous parent node if any. */
-                            if($last_node->parentNode !== null) {
-                                $last_node->parentNode->removeChild($last_node);
-                            }
-
-                            $node->appendChild($last_node);
-
-                            /* 6.7 Let last node be node. */
-                            $last_node = $node;
-
-                            /* 6.8 Return to step 1 of this inner set of steps. */
-                        }
-
-                        /* 7. If the common ancestor node is a table, tbody,
-                         * tfoot, thead, or tr element, then, foster parent
-                         * whatever last node ended up being in the previous
-                         * step, first removing it from its previous parent
-                         * node if any. */
-                        if ($last_node->parentNode) { // common step
-                            $last_node->parentNode->removeChild($last_node);
-                        }
-                        if (in_array($common_ancestor->tagName, array('table', 'tbody', 'tfoot', 'thead', 'tr'))) {
-                            $this->fosterParent($last_node);
-                        /* Otherwise, append whatever last node  ended up being
-                         * in the previous step to the common ancestor node,
-                         * first removing it from its previous parent node if
-                         * any. */
-                        } else {
-                            $common_ancestor->appendChild($last_node);
-                        }
-
-                        /* 8. Create an element for the token for which the
-                         * formatting element was created. */
-                        $clone = $formatting_element->cloneNode();
-
-                        /* 9. Take all of the child nodes of the furthest
-                        block and append them to the element created in the
-                        last step. */
-                        while($furthest_block->hasChildNodes()) {
-                            $child = $furthest_block->firstChild;
-                            $furthest_block->removeChild($child);
-                            $clone->appendChild($child);
-                        }
-
-                        /* 10. Append that clone to the furthest block. */
-                        $furthest_block->appendChild($clone);
-
-                        /* 11. Remove the formatting element from the list
-                        of active formatting elements, and insert the new element
-                        into the list of active formatting elements at the
-                        position of the aforementioned bookmark. */
-                        $fe_af_pos = array_search($formatting_element, $this->a_formatting, true);
-                        array_splice($this->a_formatting, $fe_af_pos, 1);
-
-                        $af_part1 = array_slice($this->a_formatting, 0, $bookmark - 1);
-                        $af_part2 = array_slice($this->a_formatting, $bookmark);
-                        $this->a_formatting = array_merge($af_part1, array($clone), $af_part2);
-
-                        /* 12. Remove the formatting element from the stack
-                        of open elements, and insert the new element into the stack
-                        of open elements immediately below the position of the
-                        furthest block in that stack. */
-                        $fe_s_pos = array_search($formatting_element, $this->stack, true);
-                        array_splice($this->stack, $fe_s_pos, 1);
-
-                        $fb_s_pos = array_search($furthest_block, $this->stack, true);
-                        $s_part1 = array_slice($this->stack, 0, $fb_s_pos + 1);
-                        $s_part2 = array_slice($this->stack, $fb_s_pos + 1);
-                        $this->stack = array_merge($s_part1, array($clone), $s_part2);
-
-                        /* 13. Jump back to step 1 in this series of steps. */
-                        unset($formatting_element, $fe_af_pos, $fe_s_pos, $furthest_block);
-                    }
-                break;
-
-                case 'applet': case 'button': case 'marquee': case 'object':
-                    /* If the stack of open elements has an element in scope whose
-                    tag name matches the tag name of the token, then generate implied
-                    tags. */
-                    if($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. */
-                        // XERROR: implement logic
-
-                        /* Pop elements from the stack of open elements  until
-                         * an element with the same tag name as the token has
-                         * been popped from the stack. */
-                        do {
-                            $node = array_pop($this->stack);
-                        } while ($node->tagName !== $token['name']);
-
-                        /* Clear the list of active formatting elements up to the
-                         * last marker. */
-                        $keys = array_keys($this->a_formatting, self::MARKER, true);
-                        $marker = end($keys);
-
-                        for($n = count($this->a_formatting) - 1; $n > $marker; $n--) {
-                            array_pop($this->a_formatting);
-                        }
-                    } else {
-                        // parse error
-                    }
-                break;
-
-                case 'br':
-                    // Parse error
-                    $this->emitToken(array(
-                        'name' => 'br',
-                        'type' => HTML5_Tokenizer::STARTTAG,
-                    ));
-                break;
-
-                /* An end tag token not covered by the previous entries */
-                default:
-                    for($n = count($this->stack) - 1; $n >= 0; $n--) {
-                        /* Initialise node to be the current node (the bottommost
-                        node of the stack). */
-                        $node = $this->stack[$n];
-
-                        /* If node has the same tag name as the end tag token,
-                        then: */
-                        if($token['name'] === $node->tagName) {
-                            /* 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. */
-                            // XERROR: implement this
-
-                            /* Pop all the nodes from the current node up to
-                            node, including node, then stop these steps. */
-                            // XSKETCHY
-                            do {
-                                $pop = array_pop($this->stack);
-                            } while ($pop !== $node);
-                            break;
-
-                        } else {
-                            $category = $this->getElementCategory($node);
-
-                            if($category !== self::FORMATTING && $category !== self::PHRASING) {
-                                /* 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. */
-                                $this->ignored = true;
-                                break;
-                                // parse error
-                            }
-                        }
-                        /* Set node to the previous entry in the stack of open elements. Loop. */
-                    }
-                break;
-            }
-            break;
-        }
-        break;
-
-    case self::IN_CDATA_RCDATA:
-        if (
-            $token['type'] === HTML5_Tokenizer::CHARACTER ||
-            $token['type'] === HTML5_Tokenizer::SPACECHARACTER
-        ) {
-            $this->insertText($token['data']);
-        } elseif ($token['type'] === HTML5_Tokenizer::EOF) {
-            // parse error
-            /* If the current node is a script  element, mark the script
-             * element as "already executed". */
-            // probably not necessary
-            array_pop($this->stack);
-            $this->mode = $this->original_mode;
-            $this->emitToken($token);
-        } elseif ($token['type'] === HTML5_Tokenizer::ENDTAG && $token['name'] === 'script') {
-            array_pop($this->stack);
-            $this->mode = $this->original_mode;
-            // we're ignoring all of the execution stuff
-        } elseif ($token['type'] === HTML5_Tokenizer::ENDTAG) {
-            array_pop($this->stack);
-            $this->mode = $this->original_mode;
-        }
-    break;
-
-    case self::IN_TABLE:
-        $clear = array('html', 'table');
-
-        /* A character token that is one of one of U+0009 CHARACTER TABULATION,
-        U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
-        or U+0020 SPACE */
-        if($token['type'] === HTML5_Tokenizer::SPACECHARACTER &&
-        /* If the current table is tainted, then act as described in
-         * the "anything else" entry below. */
-        // Note: hsivonen has a test that fails due to this line
-        // because he wants to convince Hixie not to do taint
-        !$this->currentTableIsTainted()) {
-            /* Append the character to the current node. */
-            $this->insertText($token['data']);
-
-        /* A comment token */
-        } elseif($token['type'] === HTML5_Tokenizer::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($token['type'] === HTML5_Tokenizer::DOCTYPE) {
-            // parse error
-
-        /* A start tag whose tag name is "caption" */
-        } elseif($token['type'] === HTML5_Tokenizer::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_Tokenizer::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);
-            $this->mode = self::IN_COLUMN_GROUP;
-
-        /* A start tag whose tag name is "col" */
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG &&
-        $token['name'] === 'col') {
-            $this->emitToken(array(
-                'name' => 'colgroup',
-                'type' => HTML5_Tokenizer::STARTTAG,
-                'attr' => array()
-            ));
-
-            $this->emitToken($token);
-
-        /* A start tag whose tag name is one of: "tbody", "tfoot", "thead" */
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG && in_array($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);
-            $this->mode = self::IN_TABLE_BODY;
-
-        /* A start tag whose tag name is one of: "td", "th", "tr" */
-        } elseif($token['type'] === HTML5_Tokenizer::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->emitToken(array(
-                'name' => 'tbody',
-                'type' => HTML5_Tokenizer::STARTTAG,
-                'attr' => array()
-            ));
-
-            $this->emitToken($token);
-
-        /* A start tag whose tag name is "table" */
-        } elseif($token['type'] === HTML5_Tokenizer::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. */
-            $this->emitToken(array(
-                'name' => 'table',
-                'type' => HTML5_Tokenizer::ENDTAG
-            ));
-
-            if (!$this->ignored) $this->emitToken($token);
-
-        /* An end tag whose tag name is "table" */
-        } elseif($token['type'] === HTML5_Tokenizer::ENDTAG &&
-        $token['name'] === 'table') {
-            /* If the stack of open elements does not have an element in table
-            scope with the same tag name as the token, this is a parse error.
-            Ignore the token. (fragment case) */
-            if(!$this->elementInScope($token['name'], true)) {
-                $this->ignored = true;
-
-            /* Otherwise: */
-            } else {
-                do {
-                    $node = array_pop($this->stack);
-                } while ($node->tagName !== 'table');
-
-                /* 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_Tokenizer::ENDTAG && in_array($token['name'],
-        array('body', 'caption', 'col', 'colgroup', 'html', 'tbody', 'td',
-        'tfoot', 'th', 'thead', 'tr'))) {
-            // Parse error. Ignore the token.
-
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG &&
-        ($token['name'] === 'style' || $token['name'] === 'script')) {
-            $this->processWithRulesFor($token, self::IN_HEAD);
-
-        } elseif ($token['type'] === HTML5_Tokenizer::STARTTAG && $token['name'] === 'input' &&
-        // assignment is intentional
-        /* If the token does not have an attribute with the name "type", or
-         * if it does, but that attribute's value is not an ASCII
-         * case-insensitive match for the string "hidden", then: act as
-         * described in the "anything else" entry below. */
-        ($type = $this->getAttr($token, 'type')) && strtolower($type) === 'hidden') {
-            // I.e., if its an input with the type attribute == 'hidden'
-            /* Otherwise */
-            // parse error
-            $this->insertElement($token);
-            array_pop($this->stack);
-        } elseif ($token['type'] === HTML5_Tokenizer::EOF) {
-            /* If the current node is not the root html element, then this is a parse error. */
-            if (end($this->stack)->tagName !== 'html') {
-                // Note: It can only be the current node in the fragment case.
-                // parse error
-            }
-            /* Stop parsing. */
-        /* Anything else */
-        } else {
-            /* Parse error. Process the token as if the insertion mode was "in
-            body", with the following exception: */
-
-            $old = $this->foster_parent;
-            $this->foster_parent = true;
-            $this->processWithRulesFor($token, self::IN_BODY);
-            $this->foster_parent = $old;
-        }
-    break;
-
-    case self::IN_CAPTION:
-        /* An end tag whose tag name is "caption" */
-        if($token['type'] === HTML5_Tokenizer::ENDTAG && $token['name'] === 'caption') {
-            /* If the stack of open elements does not have an element in table
-            scope with the same tag name as the token, this is a parse error.
-            Ignore the token. (fragment case) */
-            if(!$this->elementInScope($token['name'], true)) {
-                $this->ignored = 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. */
-                // XERROR: implement
-
-                /* Pop elements from this stack until a caption element has
-                been popped from the stack. */
-                do {
-                    $node = array_pop($this->stack);
-                } while ($node->tagName !== 'caption');
-
-                /* 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_Tokenizer::STARTTAG && in_array($token['name'],
-        array('caption', 'col', 'colgroup', 'tbody', 'td', 'tfoot', 'th',
-        'thead', 'tr'))) || ($token['type'] === HTML5_Tokenizer::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. */
-            $this->emitToken(array(
-                'name' => 'caption',
-                'type' => HTML5_Tokenizer::ENDTAG
-            ));
-
-            if (!$this->ignored) $this->emitToken($token);
-
-        /* An end tag whose tag name is one of: "body", "col", "colgroup",
-        "html", "tbody", "td", "tfoot", "th", "thead", "tr" */
-        } elseif($token['type'] === HTML5_Tokenizer::ENDTAG && in_array($token['name'],
-        array('body', 'col', 'colgroup', 'html', 'tbody', 'tfoot', 'th',
-        'thead', 'tr'))) {
-            // Parse error. Ignore the token.
-            $this->ignored = true;
-
-        /* Anything else */
-        } else {
-            /* Process the token as if the insertion mode was "in body". */
-            $this->processWithRulesFor($token, self::IN_BODY);
-        }
-    break;
-
-    case self::IN_COLUMN_GROUP:
-        /* 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_Tokenizer::SPACECHARACTER) {
-            /* Append the character to the current node. */
-            $this->insertText($token['data']);
-
-        /* A comment token */
-        } elseif($token['type'] === HTML5_Tokenizer::COMMENT) {
-            /* Append a Comment node to the current node with the data
-            attribute set to the data given in the comment token. */
-            $this->insertToken($token['data']);
-
-        } elseif($token['type'] === HTML5_Tokenizer::DOCTYPE) {
-            // parse error
-
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG && $token['name'] === 'html') {
-            $this->processWithRulesFor($token, self::IN_BODY);
-
-        /* A start tag whose tag name is "col" */
-        } elseif($token['type'] === HTML5_Tokenizer::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($this->stack);
-            // XERROR: Acknowledge the token's self-closing flag, if it is set.
-
-        /* An end tag whose tag name is "colgroup" */
-        } elseif($token['type'] === HTML5_Tokenizer::ENDTAG &&
-        $token['name'] === 'colgroup') {
-            /* If the current node is the root html element, then this is a
-            parse error, ignore the token. (fragment case) */
-            if(end($this->stack)->tagName === 'html') {
-                $this->ignored = true;
-
-            /* Otherwise, pop the current node (which will be a colgroup
-            element) from the stack of open elements. Switch the insertion
-            mode to "in table". */
-            } else {
-                array_pop($this->stack);
-                $this->mode = self::IN_TABLE;
-            }
-
-        /* An end tag whose tag name is "col" */
-        } elseif($token['type'] === HTML5_Tokenizer::ENDTAG && $token['name'] === 'col') {
-            /* Parse error. Ignore the token. */
-            $this->ignored = true;
-
-        /* An end-of-file token */
-        /* If the current node is the root html  element */
-        } elseif($token['type'] === HTML5_Tokenizer::EOF && end($this->stack)->tagName === 'html') {
-            /* Stop parsing */
-
-        /* 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. */
-            $this->emitToken(array(
-                'name' => 'colgroup',
-                'type' => HTML5_Tokenizer::ENDTAG
-            ));
-
-            if (!$this->ignored) $this->emitToken($token);
-        }
-    break;
-
-    case self::IN_TABLE_BODY:
-        $clear = array('tbody', 'tfoot', 'thead', 'html');
-
-        /* A start tag whose tag name is "tr" */
-        if($token['type'] === HTML5_Tokenizer::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_Tokenizer::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->emitToken(array(
-                'name' => 'tr',
-                'type' => HTML5_Tokenizer::STARTTAG,
-                'attr' => array()
-            ));
-
-            $this->emitToken($token);
-
-        /* An end tag whose tag name is one of: "tbody", "tfoot", "thead" */
-        } elseif($token['type'] === HTML5_Tokenizer::ENDTAG &&
-        in_array($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)) {
-                // Parse error
-                $this->ignored = true;
-
-            /* 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_Tokenizer::STARTTAG && in_array($token['name'],
-        array('caption', 'col', 'colgroup', 'tbody', 'tfoot', 'thead'))) ||
-        ($token['type'] === HTML5_Tokenizer::ENDTAG && $token['name'] === 'table')) {
-            /* If the stack of open elements does not have a tbody, thead, or
-            tfoot element in table scope, this is a parse error. Ignore the
-            token. (fragment case) */
-            if(!$this->elementInScope(array('tbody', 'thead', 'tfoot'), true)) {
-                // parse error
-                $this->ignored = true;
-
-            /* 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. */
-                $this->emitToken(array(
-                    'name' => end($this->stack)->tagName,
-                    'type' => HTML5_Tokenizer::ENDTAG
-                ));
-
-                $this->emitToken($token);
-            }
-
-        /* An end tag whose tag name is one of: "body", "caption", "col",
-        "colgroup", "html", "td", "th", "tr" */
-        } elseif($token['type'] === HTML5_Tokenizer::ENDTAG && in_array($token['name'],
-        array('body', 'caption', 'col', 'colgroup', 'html', 'td', 'th', 'tr'))) {
-            /* Parse error. Ignore the token. */
-            $this->ignored = true;
-
-        /* Anything else */
-        } else {
-            /* Process the token as if the insertion mode was "in table". */
-            $this->processWithRulesFor($token, self::IN_TABLE);
-        }
-    break;
-
-    case self::IN_ROW:
-        $clear = array('tr', 'html');
-
-        /* A start tag whose tag name is one of: "th", "td" */
-        if($token['type'] === HTML5_Tokenizer::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_Tokenizer::ENDTAG && $token['name'] === 'tr') {
-            /* If the stack of open elements does not have an element in table
-            scope with the same tag name as the token, this is a parse error.
-            Ignore the token. (fragment case) */
-            if(!$this->elementInScope($token['name'], true)) {
-                // Ignore.
-                $this->ignored = true;
-
-            /* 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);
-                $this->mode = self::IN_TABLE_BODY;
-            }
-
-        /* A start tag whose tag name is one of: "caption", "col", "colgroup",
-        "tbody", "tfoot", "thead", "tr" or an end tag whose tag name is "table" */
-        } elseif(($token['type'] === HTML5_Tokenizer::STARTTAG && in_array($token['name'],
-        array('caption', 'col', 'colgroup', 'tbody', 'tfoot', 'thead', 'tr'))) ||
-        ($token['type'] === HTML5_Tokenizer::ENDTAG && $token['name'] === 'table')) {
-            /* 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. */
-            $this->emitToken(array(
-                'name' => 'tr',
-                'type' => HTML5_Tokenizer::ENDTAG
-            ));
-            if (!$this->ignored) $this->emitToken($token);
-
-        /* An end tag whose tag name is one of: "tbody", "tfoot", "thead" */
-        } elseif($token['type'] === HTML5_Tokenizer::ENDTAG &&
-        in_array($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)) {
-                $this->ignored = true;
-
-            /* Otherwise: */
-            } else {
-                /* Otherwise, act as if an end tag with the tag name "tr" had
-                been seen, then reprocess the current token. */
-                $this->emitToken(array(
-                    'name' => 'tr',
-                    'type' => HTML5_Tokenizer::ENDTAG
-                ));
-
-                $this->emitToken($token);
-            }
-
-        /* An end tag whose tag name is one of: "body", "caption", "col",
-        "colgroup", "html", "td", "th" */
-        } elseif($token['type'] === HTML5_Tokenizer::ENDTAG && in_array($token['name'],
-        array('body', 'caption', 'col', 'colgroup', 'html', 'td', 'th'))) {
-            /* Parse error. Ignore the token. */
-            $this->ignored = true;
-
-        /* Anything else */
-        } else {
-            /* Process the token as if the insertion mode was "in table". */
-            $this->processWithRulesFor($token, self::IN_TABLE);
-        }
-    break;
-
-    case self::IN_CELL:
-        /* An end tag whose tag name is one of: "td", "th" */
-        if($token['type'] === HTML5_Tokenizer::ENDTAG &&
-        ($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)) {
-                $this->ignored = true;
-
-            /* 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. */
-                // XERROR: Implement parse error code
-
-                /* Pop elements from this stack until an element with the same
-                tag name as the token has been popped from the stack. */
-                do {
-                    $node = array_pop($this->stack);
-                } while ($node->tagName !== $token['name']);
-
-                /* 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_Tokenizer::STARTTAG && in_array($token['name'],
-        array('caption', 'col', 'colgroup', 'tbody', 'td', 'tfoot', 'th',
-        'thead', 'tr'))) {
-            /* If the stack of open elements does not have a td or th element
-            in table scope, then this is a parse error; ignore the token.
-            (fragment case) */
-            if(!$this->elementInScope(array('td', 'th'), true)) {
-                // parse error
-                $this->ignored = true;
-
-            /* Otherwise, close the cell (see below) and reprocess the current
-            token. */
-            } else {
-                $this->closeCell();
-                $this->emitToken($token);
-            }
-
-        /* An end tag whose tag name is one of: "body", "caption", "col",
-        "colgroup", "html" */
-        } elseif($token['type'] === HTML5_Tokenizer::ENDTAG && in_array($token['name'],
-        array('body', 'caption', 'col', 'colgroup', 'html'))) {
-            /* Parse error. Ignore the token. */
-            $this->ignored = true;
-
-        /* An end tag whose tag name is one of: "table", "tbody", "tfoot",
-        "thead", "tr" */
-        } elseif($token['type'] === HTML5_Tokenizer::ENDTAG && in_array($token['name'],
-        array('table', 'tbody', 'tfoot', 'thead', 'tr'))) {
-            /* If the stack of open elements does not have a td or th element
-            in table scope, then this is a parse error; ignore the token.
-            (innerHTML case) */
-            if(!$this->elementInScope(array('td', 'th'), true)) {
-                // Parse error
-                $this->ignored = true;
-
-            /* Otherwise, close the cell (see below) and reprocess the current
-            token. */
-            } else {
-                $this->closeCell();
-                $this->emitToken($token);
-            }
-
-        /* Anything else */
-        } else {
-            /* Process the token as if the insertion mode was "in body". */
-            $this->processWithRulesFor($token, self::IN_BODY);
-        }
-    break;
-
-    case self::IN_SELECT:
-        /* Handle the token as follows: */
-
-        /* A character token */
-        if(
-            $token['type'] === HTML5_Tokenizer::CHARACTER ||
-            $token['type'] === HTML5_Tokenizer::SPACECHARACTER
-        ) {
-            /* Append the token's character to the current node. */
-            $this->insertText($token['data']);
-
-        /* A comment token */
-        } elseif($token['type'] === HTML5_Tokenizer::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($token['type'] === HTML5_Tokenizer::DOCTYPE) {
-            // parse error
-
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG && $token['name'] === 'html') {
-            $this->processWithRulesFor($token, self::INBODY);
-
-        /* A start tag token whose tag name is "option" */
-        } elseif($token['type'] === HTML5_Tokenizer::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)->tagName === 'option') {
-                $this->emitToken(array(
-                    'name' => 'option',
-                    'type' => HTML5_Tokenizer::ENDTAG
-                ));
-            }
-
-            /* Insert an HTML element for the token. */
-            $this->insertElement($token);
-
-        /* A start tag token whose tag name is "optgroup" */
-        } elseif($token['type'] === HTML5_Tokenizer::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)->tagName === 'option') {
-                $this->emitToken(array(
-                    'name' => 'option',
-                    'type' => HTML5_Tokenizer::ENDTAG
-                ));
-            }
-
-            /* If the current node is an optgroup element, act as if an end tag
-            with the tag name "optgroup" had been seen. */
-            if(end($this->stack)->tagName === 'optgroup') {
-                $this->emitToken(array(
-                    'name' => 'optgroup',
-                    'type' => HTML5_Tokenizer::ENDTAG
-                ));
-            }
-
-            /* Insert an HTML element for the token. */
-            $this->insertElement($token);
-
-        /* An end tag token whose tag name is "optgroup" */
-        } elseif($token['type'] === HTML5_Tokenizer::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]->tagName === 'option' &&
-            $this->stack[$elements_in_stack - 2]->tagName === 'optgroup') {
-                $this->emitToken(array(
-                    'name' => 'option',
-                    'type' => HTML5_Tokenizer::ENDTAG
-                ));
-            }
-
-            /* If the current node is an optgroup element, then pop that node
-            from the stack of open elements. Otherwise, this is a parse error,
-            ignore the token. */
-            if(end($this->stack)->tagName === 'optgroup') {
-                array_pop($this->stack);
-            } else {
-                // parse error
-                $this->ignored = true;
-            }
-
-        /* An end tag token whose tag name is "option" */
-        } elseif($token['type'] === HTML5_Tokenizer::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)->tagName === 'option') {
-                array_pop($this->stack);
-            } else {
-                // parse error
-                $this->ignored = true;
-            }
-
-        /* An end tag whose tag name is "select" */
-        } elseif($token['type'] === HTML5_Tokenizer::ENDTAG &&
-        $token['name'] === 'select') {
-            /* If the stack of open elements does not have an element in table
-            scope with the same tag name as the token, this is a parse error.
-            Ignore the token. (fragment case) */
-            if(!$this->elementInScope($token['name'], true)) {
-                $this->ignored = true;
-                // parse error
-
-            /* Otherwise: */
-            } else {
-                /* Pop elements from the stack of open elements until a select
-                element has been popped from the stack. */
-                do {
-                    $node = array_pop($this->stack);
-                } while ($node->tagName !== 'select');
-
-                /* Reset the insertion mode appropriately. */
-                $this->resetInsertionMode();
-            }
-
-        /* A start tag whose tag name is "select" */
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG && $token['name'] === 'select') {
-            /* Parse error. Act as if the token had been an end tag with the
-            tag name "select" instead. */
-            $this->emitToken(array(
-                'name' => 'select',
-                'type' => HTML5_Tokenizer::ENDTAG
-            ));
-
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG &&
-        ($token['name'] === 'input' || $token['name'] === 'textarea')) {
-            // parse error
-            $this->emitToken(array(
-                'name' => 'select',
-                'type' => HTML5_Tokenizer::ENDTAG
-            ));
-            $this->emitToken($token);
-
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG && $token['name'] === 'script') {
-            $this->processWithRulesFor($token, self::IN_HEAD);
-
-        } elseif($token['type'] === HTML5_Tokenizer::EOF) {
-            // XERROR: If the current node is not the root html element, then this is a parse error.
-            /* Stop parsing */
-
-        /* Anything else */
-        } else {
-            /* Parse error. Ignore the token. */
-            $this->ignored = true;
-        }
-    break;
-
-    case self::IN_SELECT_IN_TABLE:
-
-        if($token['type'] === HTML5_Tokenizer::STARTTAG &&
-        in_array($token['name'], array('caption', 'table', 'tbody',
-        'tfoot', 'thead', 'tr', 'td', 'th'))) {
-            // parse error
-            $this->emitToken(array(
-                'name' => 'select',
-                'type' => HTML5_Tokenizer::ENDTAG,
-            ));
-            $this->emitToken($token);
-
-        /* An end tag whose tag name is one of: "caption", "table", "tbody",
-        "tfoot", "thead", "tr", "td", "th" */
-        } elseif($token['type'] === HTML5_Tokenizer::ENDTAG &&
-        in_array($token['name'], array('caption', 'table', 'tbody', 'tfoot', 'thead', 'tr', 'td', 'th')))  {
-            /* Parse error. */
-            // parse error
-
-            /* 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->emitToken(array(
-                    'name' => 'select',
-                    'type' => HTML5_Tokenizer::ENDTAG
-                ));
-
-                $this->emitToken($token);
-            } else {
-                $this->ignored = true;
-            }
-        } else {
-            $this->processWithRulesFor($token, self::IN_SELECT);
-        }
-    break;
-
-    case self::IN_FOREIGN_CONTENT:
-        if ($token['type'] === HTML5_Tokenizer::CHARACTER ||
-        $token['type'] === HTML5_Tokenizer::SPACECHARACTER) {
-            $this->insertText($token['data']);
-        } elseif ($token['type'] === HTML5_Tokenizer::COMMENT) {
-            $this->insertComment($token['data']);
-        } elseif ($token['type'] === HTML5_Tokenizer::DOCTYPE) {
-            // XERROR: parse error
-        } elseif ($token['type'] === HTML5_Tokenizer::ENDTAG &&
-        $token['name'] === 'script' && end($this->stack)->tagName === 'script' &&
-        end($this->stack)->namespaceURI === self::NS_SVG) {
-            array_pop($this->stack);
-            // a bunch of script running mumbo jumbo
-        } elseif (
-            ($token['type'] === HTML5_Tokenizer::STARTTAG &&
-                ((
-                    $token['name'] !== 'mglyph' &&
-                    $token['name'] !== 'malignmark' &&
-                    end($this->stack)->namespaceURI === self::NS_MATHML &&
-                    in_array(end($this->stack)->tagName, array('mi', 'mo', 'mn', 'ms', 'mtext'))
-                ) ||
-                (
-                    $token['name'] === 'svg' &&
-                    end($this->stack)->namespaceURI === self::NS_MATHML &&
-                    end($this->stack)->tagName === 'annotation-xml'
-                ) ||
-                (
-                    end($this->stack)->namespaceURI === self::NS_SVG &&
-                    in_array(end($this->stack)->tagName, array('foreignObject', 'desc', 'title'))
-                ) ||
-                (
-                    // XSKETCHY
-                    end($this->stack)->namespaceURI === self::NS_HTML
-                ))
-            ) || $token['type'] === HTML5_Tokenizer::ENDTAG
-        ) {
-            $this->processWithRulesFor($token, $this->secondary_mode);
-            /* If, after doing so, the insertion mode is still "in foreign 
-             * content", but there is no element in scope that has a namespace 
-             * other than the HTML namespace, switch the insertion mode to the 
-             * secondary insertion mode. */
-            if ($this->mode === self::IN_FOREIGN_CONTENT) {
-                $found = false;
-                // this basically duplicates elementInScope()
-                for ($i = count($this->stack) - 1; $i >= 0; $i--) {
-                    $node = $this->stack[$i];
-                    if ($node->namespaceURI !== self::NS_HTML) {
-                        $found = true;
-                        break;
-                    } elseif (in_array($node->tagName, array('table', 'html',
-                    'applet', 'caption', 'td', 'th', 'button', 'marquee',
-                    'object')) || ($node->tagName === 'foreignObject' &&
-                    $node->namespaceURI === self::NS_SVG)) {
-                        break;
-                    }
-                }
-                if (!$found) {
-                    $this->mode = $this->secondary_mode;
-                }
-            }
-        } elseif ($token['type'] === HTML5_Tokenizer::EOF || (
-        $token['type'] === HTML5_Tokenizer::STARTTAG &&
-        (in_array($token['name'], array('b', "big", "blockquote", "body", "br", 
-        "center", "code", "dd", "div", "dl", "dt", "em", "embed", "h1", "h2", 
-        "h3", "h4", "h5", "h6", "head", "hr", "i", "img", "li", "listing", 
-        "menu", "meta", "nobr", "ol", "p", "pre", "ruby", "s",  "small", 
-        "span", "strong", "strike",  "sub", "sup", "table", "tt", "u", "ul", 
-        "var")) || ($token['name'] === 'font' && ($this->getAttr($token, 'color') ||
-        $this->getAttr($token, 'face') || $this->getAttr($token, 'size')))))) {
-            // XERROR: parse error
-            do {
-                $node = array_pop($this->stack);
-            } while ($node->namespaceURI !== self::NS_HTML);
-            $this->stack[] = $node;
-            $this->mode = $this->secondary_mode;
-            $this->emitToken($token);
-        } elseif ($token['type'] === HTML5_Tokenizer::STARTTAG) {
-            static $svg_lookup = array(
-                'altglyph' => 'altGlyph',
-                'altglyphdef' => 'altGlyphDef',
-                'altglyphitem' => 'altGlyphItem',
-                'animatecolor' => 'animateColor',
-                'animatemotion' => 'animateMotion',
-                'animatetransform' => 'animateTransform',
-                'clippath' => 'clipPath',
-                'feblend' => 'feBlend',
-                'fecolormatrix' => 'feColorMatrix',
-                'fecomponenttransfer' => 'feComponentTransfer',
-                'fecomposite' => 'feComposite',
-                'feconvolvematrix' => 'feConvolveMatrix',
-                'fediffuselighting' => 'feDiffuseLighting',
-                'fedisplacementmap' => 'feDisplacementMap',
-                'fedistantlight' => 'feDistantLight',
-                'feflood' => 'feFlood',
-                'fefunca' => 'feFuncA',
-                'fefuncb' => 'feFuncB',
-                'fefuncg' => 'feFuncG',
-                'fefuncr' => 'feFuncR',
-                'fegaussianblur' => 'feGaussianBlur',
-                'feimage' => 'feImage',
-                'femerge' => 'feMerge',
-                'femergenode' => 'feMergeNode',
-                'femorphology' => 'feMorphology',
-                'feoffset' => 'feOffset',
-                'fepointlight' => 'fePointLight',
-                'fespecularlighting' => 'feSpecularLighting',
-                'fespotlight' => 'feSpotLight',
-                'fetile' => 'feTile',
-                'feturbulence' => 'feTurbulence',
-                'foreignobject' => 'foreignObject',
-                'glyphref' => 'glyphRef',
-                'lineargradient' => 'linearGradient',
-                'radialgradient' => 'radialGradient',
-                'textpath' => 'textPath',
-            );
-            $current = end($this->stack);
-            if ($current->namespaceURI === self::NS_MATHML) {
-                $token = $this->adjustMathMLAttributes($token);
-            }
-            if ($current->namespaceURI === self::NS_SVG &&
-            isset($svg_lookup[$token['name']])) {
-                $token['name'] = $svg_lookup[$token['name']];
-            }
-            if ($current->namespaceURI === self::NS_SVG) {
-                $token = $this->adjustSVGAttributes($token);
-            }
-            $token = $this->adjustForeignAttributes($token);
-            $this->insertForeignElement($token, $current->namespaceURI);
-            if (isset($token['self-closing'])) {
-                array_pop($this->stack);
-                // XERROR: acknowledge self-closing flag
-            }
-        }
-    break;
-
-    case self::AFTER_BODY:
-        /* Handle the token as follows: */
-
-        /* A character token that is one of one of U+0009 CHARACTER TABULATION,
-        U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
-        or U+0020 SPACE */
-        if($token['type'] === HTML5_Tokenizer::SPACECHARACTER) {
-            /* Process the token as it would be processed if the insertion mode
-            was "in body". */
-            $this->processWithRulesFor($token, self::IN_BODY);
-
-        /* A comment token */
-        } elseif($token['type'] === HTML5_Tokenizer::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);
-
-        } elseif($token['type'] === HTML5_Tokenizer::DOCTYPE) {
-            // parse error
-
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG && $token['name'] === 'html') {
-            $this->processWithRulesFor($token, self::IN_BODY);
-
-        /* An end tag with the tag name "html" */
-        } elseif($token['type'] === HTML5_Tokenizer::ENDTAG && $token['name'] === 'html') {
-            /*     If the parser was originally created as part of the HTML
-             *     fragment parsing algorithm, this is a parse error; ignore
-             *     the token. (fragment case) */
-            $this->ignored = true;
-            // XERROR: implement this
-
-            $this->mode = self::AFTER_AFTER_BODY;
-
-        } elseif($token['type'] === HTML5_Tokenizer::EOF) {
-            /* Stop parsing */
-
-        /* Anything else */
-        } else {
-            /* Parse error. Set the insertion mode to "in body" and reprocess
-            the token. */
-            $this->mode = self::IN_BODY;
-            $this->emitToken($token);
-        }
-    break;
-
-    case self::IN_FRAMESET:
-        /* 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_Tokenizer::SPACECHARACTER) {
-            /* Append the character to the current node. */
-            $this->insertText($token['data']);
-
-        /* A comment token */
-        } elseif($token['type'] === HTML5_Tokenizer::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($token['type'] === HTML5_Tokenizer::DOCTYPE) {
-            // parse error
-
-        /* A start tag with the tag name "frameset" */
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG &&
-        $token['name'] === 'frameset') {
-            $this->insertElement($token);
-
-        /* An end tag with the tag name "frameset" */
-        } elseif($token['type'] === HTML5_Tokenizer::ENDTAG &&
-        $token['name'] === 'frameset') {
-            /* If the current node is the root html element, then this is a
-            parse error; ignore the token. (fragment case) */
-            if(end($this->stack)->tagName === 'html') {
-                $this->ignored = true;
-                // Parse error
-
-            } else {
-                /* Otherwise, pop the current node from the stack of open
-                elements. */
-                array_pop($this->stack);
-
-                /* If the parser was not originally created as part of the HTML 
-                 * fragment parsing algorithm  (fragment case), and the current 
-                 * node is no longer a frameset element, then switch the 
-                 * insertion mode to "after frameset". */
-                $this->mode = self::AFTER_FRAMESET;
-            }
-
-        /* A start tag with the tag name "frame" */
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG &&
-        $token['name'] === 'frame') {
-            /* Insert an HTML element for the token. */
-            $this->insertElement($token);
-
-            /* Immediately pop the current node off the stack of open elements. */
-            array_pop($this->stack);
-
-            // XERROR: Acknowledge the token's self-closing flag, if it is set.
-
-        /* A start tag with the tag name "noframes" */
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG &&
-        $token['name'] === 'noframes') {
-            /* Process the token using the rules for the "in head" insertion mode. */
-            $this->processwithRulesFor($token, self::IN_HEAD);
-
-        } elseif($token['type'] === HTML5_Tokenizer::EOF) {
-            // XERROR: If the current node is not the root html element, then this is a parse error.
-            /* Stop parsing */
-        /* Anything else */
-        } else {
-            /* Parse error. Ignore the token. */
-            $this->ignored = true;
-        }
-    break;
-
-    case self::AFTER_FRAMESET:
-        /* Handle the token as follows: */
-
-        /* A character token that is one of one of U+0009 CHARACTER TABULATION,
-        U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
-        U+000D CARRIAGE RETURN (CR), or U+0020 SPACE */
-        if($token['type'] === HTML5_Tokenizer::SPACECHARACTER) {
-            /* Append the character to the current node. */
-            $this->insertText($token['data']);
-
-        /* A comment token */
-        } elseif($token['type'] === HTML5_Tokenizer::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($token['type'] === HTML5_Tokenizer::DOCTYPE) {
-            // parse error
-
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG && $token['name'] === 'html') {
-            $this->processWithRulesFor($token, self::IN_BODY);
-
-        /* An end tag with the tag name "html" */
-        } elseif($token['type'] === HTML5_Tokenizer::ENDTAG &&
-        $token['name'] === 'html') {
-            $this->mode = self::AFTER_AFTER_FRAMESET;
-
-        /* A start tag with the tag name "noframes" */
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG &&
-        $token['name'] === 'noframes') {
-            $this->processWithRulesFor($token, self::IN_HEAD);
-
-        } elseif($token['type'] === HTML5_Tokenizer::EOF) {
-            /* Stop parsing */
-
-        /* Anything else */
-        } else {
-            /* Parse error. Ignore the token. */
-            $this->ignored = true;
-        }
-    break;
-
-    case self::AFTER_AFTER_BODY:
-        /* A comment token */
-        if($token['type'] === HTML5_Tokenizer::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);
-
-        } elseif($token['type'] === HTML5_Tokenizer::DOCTYPE ||
-        $token['type'] === HTML5_Tokenizer::SPACECHARACTER ||
-        ($token['type'] === HTML5_Tokenizer::STARTTAG && $token['name'] === 'html')) {
-            $this->processWithRulesFor($token, self::IN_BODY);
-
-        /* An end-of-file token */
-        } elseif($token['type'] === HTML5_Tokenizer::EOF) {
-            /* OMG DONE!! */
-        } else {
-            // parse error
-            $this->mode = self::IN_BODY;
-            $this->emitToken($token);
-        }
-    break;
-
-    case self::AFTER_AFTER_FRAMESET:
-        /* A comment token */
-        if($token['type'] === HTML5_Tokenizer::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);
-
-        } elseif($token['type'] === HTML5_Tokenizer::DOCTYPE ||
-        $token['type'] === HTML5_Tokenizer::SPACECHARACTER ||
-        ($token['type'] === HTML5_Tokenizer::STARTTAG && $token['name'] === 'html')) {
-            $this->processWithRulesFor($token, self::IN_BODY);
-
-        /* An end-of-file token */
-        } elseif($token['type'] === HTML5_Tokenizer::EOF) {
-            /* OMG DONE!! */
-        } elseif($token['type'] === HTML5_Tokenizer::STARTTAG && $token['name'] === 'nofrmaes') {
-            $this->processWithRulesFor($token, self::IN_HEAD);
-        } else {
-            // parse error
-        }
-    break;
-    }
-        // end funky indenting
-        }
-
-    private function insertElement($token, $append = true) {
-        $el = $this->dom->createElementNS(self::NS_HTML, $token['name']);
-
-        if (!empty($token['attr'])) {
-            foreach($token['attr'] as $attr) {
-
-				// mike@macgirvin.com 2011-11-17, check attribute name for
-				// validity (ignoring extenders and combiners) as illegal chars in names
-				// causes everything to abort
-
- 				$valid = preg_match('/^[a-zA-Z\_\:]([\-a-zA-Z0-9\_\:\.]+$)/',$attr['name'],$matches);
-                if($attr['name'] && (!$el->hasAttribute($attr['name'])) && ($valid)) {
-                    $el->setAttribute($attr['name'], $attr['value']);
-                }
-            }
-        }
-        if ($append) {
-            $this->appendToRealParent($el);
-            $this->stack[] = $el;
-        }
-
-        return $el;
-    }
-
-    private function insertText($data) {
-        if ($data === '') return;
-        if ($this->ignore_lf_token) {
-            if ($data[0] === "\n") {
-                $data = substr($data, 1);
-                if ($data === false) return;
-            }
-        }
-        $text = $this->dom->createTextNode($data);
-        $this->appendToRealParent($text);
-    }
-
-    private function insertComment($data) {
-        $comment = $this->dom->createComment($data);
-        $this->appendToRealParent($comment);
-    }
-
-    private function appendToRealParent($node) {
-        // this is only for the foster_parent case
-        /* If the current node is a table, tbody, tfoot, thead, or tr
-        element, then, whenever a node would be inserted into the current
-        node, it must instead be inserted into the foster parent element. */
-        if(!$this->foster_parent || !in_array(end($this->stack)->tagName,
-        array('table', 'tbody', 'tfoot', 'thead', 'tr'))) {
-            end($this->stack)->appendChild($node);
-        } else {
-            $this->fosterParent($node);
-        }
-    }
-
-    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 === $el) {
-                /* 2. If node is the target node, terminate in a match state. */
-                return true;
-
-            // these are the common states for "in scope" and "in table scope"
-            } elseif($node->tagName === 'table' || $node->tagName === 'html') {
-                return false;
-
-            // these are only valid for "in scope"
-            } elseif(!$table &&
-            (in_array($node->tagName, array('applet', 'caption', 'td',
-                'th', 'button', 'marquee', 'object')) ||
-                $node->tagName === 'foreignObject' && $node->namespaceURI === self::NS_SVG)) {
-                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. */
-            $this->appendToRealParent($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($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)->tagName, $elements)) {
-            array_pop($this->stack);
-        }
-    }
-
-    private function getElementCategory($node) {
-        if (!is_object($node)) debug_print_backtrace();
-        $name = $node->tagName;
-        if(in_array($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. */
-        while(true) {
-            $name = end($this->stack)->tagName;
-
-            if(in_array($name, $elements)) {
-                break;
-            } else {
-                array_pop($this->stack);
-            }
-        }
-    }
-
-    private function resetInsertionMode($context = null) {
-        /* 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 and set node to the context  element. (fragment 
-             * case) */
-            if($this->stack[0]->isSameNode($node)) {
-                $last = true;
-                $node = $context;
-            }
-
-            /* 4. If node is a select element, then switch the insertion mode to
-            "in select" and abort these steps. (fragment case) */
-            if($node->tagName === '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->tagName === '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->tagName === '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->tagName, array('tbody', 'thead', 'tfoot'))) {
-                $this->mode = self::IN_TABLE_BODY;
-                break;
-
-            /* 8. If node is a caption element, then switch the insertion mode
-            to "in caption" and abort these steps. */
-            } elseif($node->tagName === '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->tagName === 'colgroup') {
-                $this->mode = self::IN_COLUMN_GROUP;
-                break;
-
-            /* 10. If node is a table element, then switch the insertion mode
-            to "in table" and abort these steps. */
-            } elseif($node->tagName === 'table') {
-                $this->mode = self::IN_TABLE;
-                break;
-
-            /* 11. If node is an element from the MathML namespace or the SVG 
-             * namespace, then switch the insertion mode to "in foreign 
-             * content", let the secondary insertion mode be "in body", and 
-             * abort these steps. */
-            } elseif($node->namespaceURI === self::NS_SVG ||
-            $node->namespaceURI === self::NS_MATHML) {
-                $this->mode = self::IN_FOREIGN_CONTENT;
-                $this->secondary_mode = self::IN_BODY;
-                break;
-
-            /* 12. If node is a head element, then switch the insertion mode
-            to "in body" ("in body"! not "in head"!) and abort these steps.
-            (fragment case) */
-            } elseif($node->tagName === 'head') {
-                $this->mode = self::IN_BODY;
-                break;
-
-            /* 13. If node is a body element, then switch the insertion mode to
-            "in body" and abort these steps. */
-            } elseif($node->tagName === 'body') {
-                $this->mode = self::IN_BODY;
-                break;
-
-            /* 14. If node is a frameset element, then switch the insertion
-            mode to "in frameset" and abort these steps. (fragment case) */
-            } elseif($node->tagName === 'frameset') {
-                $this->mode = self::IN_FRAMESET;
-                break;
-
-            /* 15. If node is an html element, then: if the head element
-            pointer is null, switch the insertion mode to "before head",
-            otherwise, switch the insertion mode to "after head". In either
-            case, abort these steps. (fragment case) */
-            } elseif($node->tagName === 'html') {
-                $this->mode = ($this->head_pointer === null)
-                    ? self::BEFORE_HEAD
-                    : self::AFTER_HEAD;
-
-                break;
-
-            /* 16. If last is true, then set the insertion mode to "in body"
-            and    abort these steps. (fragment 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->emitToken(array(
-                    'name' => $cell,
-                    'type' => HTML5_Tokenizer::ENDTAG
-                ));
-
-                break;
-            }
-        }
-    }
-
-    private function processWithRulesFor($token, $mode) {
-        /* "using the rules for the m insertion mode", where m is one of these
-         * modes, the user agent must use the rules described under the m
-         * insertion mode's section, but must leave the insertion mode
-         * unchanged unless the rules in m themselves switch the insertion mode
-         * to a new value. */
-        return $this->emitToken($token, $mode);
-    }
-
-    private function insertCDATAElement($token) {
-        $this->insertElement($token);
-        $this->original_mode = $this->mode;
-        $this->mode = self::IN_CDATA_RCDATA;
-        $this->content_model = HTML5_Tokenizer::CDATA;
-    }
-
-    private function insertRCDATAElement($token) {
-        $this->insertElement($token);
-        $this->original_mode = $this->mode;
-        $this->mode = self::IN_CDATA_RCDATA;
-        $this->content_model = HTML5_Tokenizer::RCDATA;
-    }
-
-    private function getAttr($token, $key) {
-        if (!isset($token['attr'])) return false;
-        $ret = false;
-        foreach ($token['attr'] as $keypair) {
-            if ($keypair['name'] === $key) $ret = $keypair['value'];
-        }
-        return $ret;
-    }
-
-    private function getCurrentTable() {
-        /* The current table is the last table  element in the stack of open 
-         * elements, if there is one. If there is no table element in the stack 
-         * of open elements (fragment case), then the current table is the 
-         * first element in the stack of open elements (the html element). */
-        for ($i = count($this->stack) - 1; $i >= 0; $i--) {
-            if ($this->stack[$i]->tagName === 'table') {
-                return $this->stack[$i];
-            }
-        }
-        return $this->stack[0];
-    }
-
-    private function getFosterParent() {
-        /* The foster parent element is the parent element of the last
-        table element in the stack of open elements, if there is a
-        table element and it has such a parent element. If there is no
-        table element in the stack of open elements (innerHTML case),
-        then the foster parent element is the first element in the
-        stack of open elements (the html  element). Otherwise, if there
-        is a table element in the stack of open elements, but the last
-        table element in the stack of open elements has no parent, or
-        its parent node is not an element, then the foster parent
-        element is the element before the last table element in the
-        stack of open elements. */
-        for($n = count($this->stack) - 1; $n >= 0; $n--) {
-            if($this->stack[$n]->tagName === 'table') {
-                $table = $this->stack[$n];
-                break;
-            }
-        }
-
-        if(isset($table) && $table->parentNode !== null) {
-            return $table->parentNode;
-
-        } elseif(!isset($table)) {
-            return $this->stack[0];
-
-        } elseif(isset($table) && ($table->parentNode === null ||
-        $table->parentNode->nodeType !== XML_ELEMENT_NODE)) {
-            return $this->stack[$n - 1];
-        }
-    }
-
-    public function fosterParent($node) {
-        $foster_parent = $this->getFosterParent();
-        $table = $this->getCurrentTable(); // almost equivalent to last table element, except it can be html
-        /* When a node node is to be foster parented, the node node  must be 
-         * inserted into the foster parent element, and the current table must 
-         * be marked as tainted. (Once the current table has been tainted, 
-         * whitespace characters are inserted into the foster parent element 
-         * instead of the current node.) */
-        $table->tainted = true;
-        /* If the foster parent element is the parent element of the last table 
-         * element in the stack of open elements, then node must be inserted 
-         * immediately before the last table element in the stack of open 
-         * elements in the foster parent element; otherwise, node must be 
-         * appended to the foster parent element. */
-        if ($table->tagName === 'table' && $table->parentNode->isSameNode($foster_parent)) {
-            $foster_parent->insertBefore($node, $table);
-        } else {
-            $foster_parent->appendChild($node);
-        }
-    }
-
-    /**
-     * For debugging, prints the stack
-     */
-    private function printStack() {
-        $names = array();
-        foreach ($this->stack as $i => $element) {
-            $names[] = $element->tagName;
-        }
-        echo "  -> stack [" . implode(', ', $names) . "]\n";
-    }
-
-    /**
-     * For debugging, prints active formatting elements
-     */
-    private function printActiveFormattingElements() {
-        if (!$this->a_formatting) return;
-        $names = array();
-        foreach ($this->a_formatting as $node) {
-            if ($node === self::MARKER) $names[] = 'MARKER';
-            else $names[] = $node->tagName;
-        }
-        echo "  -> active formatting [" . implode(', ', $names) . "]\n";
-    }
-
-    public function currentTableIsTainted() {
-        return !empty($this->getCurrentTable()->tainted);
-    }
-
-    /**
-     * Sets up the tree constructor for building a fragment.
-     */
-    public function setupContext($context = null) {
-        $this->fragment = true;
-        if ($context) {
-            $context = $this->dom->createElementNS(self::NS_HTML, $context);
-            /* 4.1. Set the HTML parser's tokenization  stage's content model
-             * flag according to the context element, as follows: */
-            switch ($context->tagName) {
-            case 'title': case 'textarea':
-                $this->content_model = HTML5_Tokenizer::RCDATA;
-                break;
-            case 'style': case 'script': case 'xmp': case 'iframe':
-            case 'noembed': case 'noframes':
-                $this->content_model = HTML5_Tokenizer::CDATA;
-                break;
-            case 'noscript':
-                // XSCRIPT: assuming scripting is enabled
-                $this->content_model = HTML5_Tokenizer::CDATA;
-                break;
-            case 'plaintext':
-                $this->content_model = HTML5_Tokenizer::PLAINTEXT;
-                break;
-            }
-            /* 4.2. Let root be a new html element with no attributes. */
-            $root = $this->dom->createElementNS(self::NS_HTML, 'html');
-            $this->root = $root;
-            /* 4.3 Append the element root to the Document node created above. */
-            $this->dom->appendChild($root);
-            /* 4.4 Set up the parser's stack of open elements so that it 
-             * contains just the single element root. */
-            $this->stack = array($root);
-            /* 4.5 Reset the parser's insertion mode appropriately. */
-            $this->resetInsertionMode($context);
-            /* 4.6 Set the parser's form element pointer  to the nearest node 
-             * to the context element that is a form element (going straight up 
-             * the ancestor chain, and including the element itself, if it is a 
-             * form element), or, if there is no such form element, to null. */
-            $node = $context;
-            do {
-                if ($node->tagName === 'form') {
-                    $this->form_pointer = $node;
-                    break;
-                }
-            } while ($node = $node->parentNode);
-        }
-    }
-
-    public function adjustMathMLAttributes($token) {
-        foreach ($token['attr'] as &$kp) {
-            if ($kp['name'] === 'definitionurl') {
-                $kp['name'] = 'definitionURL';
-            }
-        }
-        return $token;
-    }
-
-    public function adjustSVGAttributes($token) {
-        static $lookup = array(
-            'attributename' => 'attributeName',
-            'attributetype' => 'attributeType',
-            'basefrequency' => 'baseFrequency',
-            'baseprofile' => 'baseProfile',
-            'calcmode' => 'calcMode',
-            'clippathunits' => 'clipPathUnits',
-            'contentscripttype' => 'contentScriptType',
-            'contentstyletype' => 'contentStyleType',
-            'diffuseconstant' => 'diffuseConstant',
-            'edgemode' => 'edgeMode',
-            'externalresourcesrequired' => 'externalResourcesRequired',
-            'filterres' => 'filterRes',
-            'filterunits' => 'filterUnits',
-            'glyphref' => 'glyphRef',
-            'gradienttransform' => 'gradientTransform',
-            'gradientunits' => 'gradientUnits',
-            'kernelmatrix' => 'kernelMatrix',
-            'kernelunitlength' => 'kernelUnitLength',
-            'keypoints' => 'keyPoints',
-            'keysplines' => 'keySplines',
-            'keytimes' => 'keyTimes',
-            'lengthadjust' => 'lengthAdjust',
-            'limitingconeangle' => 'limitingConeAngle',
-            'markerheight' => 'markerHeight',
-            'markerunits' => 'markerUnits',
-            'markerwidth' => 'markerWidth',
-            'maskcontentunits' => 'maskContentUnits',
-            'maskunits' => 'maskUnits',
-            'numoctaves' => 'numOctaves',
-            'pathlength' => 'pathLength',
-            'patterncontentunits' => 'patternContentUnits',
-            'patterntransform' => 'patternTransform',
-            'patternunits' => 'patternUnits',
-            'pointsatx' => 'pointsAtX',
-            'pointsaty' => 'pointsAtY',
-            'pointsatz' => 'pointsAtZ',
-            'preservealpha' => 'preserveAlpha',
-            'preserveaspectratio' => 'preserveAspectRatio',
-            'primitiveunits' => 'primitiveUnits',
-            'refx' => 'refX',
-            'refy' => 'refY',
-            'repeatcount' => 'repeatCount',
-            'repeatdur' => 'repeatDur',
-            'requiredextensions' => 'requiredExtensions',
-            'requiredfeatures' => 'requiredFeatures',
-            'specularconstant' => 'specularConstant',
-            'specularexponent' => 'specularExponent',
-            'spreadmethod' => 'spreadMethod',
-            'startoffset' => 'startOffset',
-            'stddeviation' => 'stdDeviation',
-            'stitchtiles' => 'stitchTiles',
-            'surfacescale' => 'surfaceScale',
-            'systemlanguage' => 'systemLanguage',
-            'tablevalues' => 'tableValues',
-            'targetx' => 'targetX',
-            'targety' => 'targetY',
-            'textlength' => 'textLength',
-            'viewbox' => 'viewBox',
-            'viewtarget' => 'viewTarget',
-            'xchannelselector' => 'xChannelSelector',
-            'ychannelselector' => 'yChannelSelector',
-            'zoomandpan' => 'zoomAndPan',
-        );
-        foreach ($token['attr'] as &$kp) {
-            if (isset($lookup[$kp['name']])) {
-                $kp['name'] = $lookup[$kp['name']];
-            }
-        }
-        return $token;
-    }
-
-    public function adjustForeignAttributes($token) {
-        static $lookup = array(
-            'xlink:actuate' => array('xlink', 'actuate', self::NS_XLINK),
-            'xlink:arcrole' => array('xlink', 'arcrole', self::NS_XLINK),
-            'xlink:href' => array('xlink', 'href', self::NS_XLINK),
-            'xlink:role' => array('xlink', 'role', self::NS_XLINK),
-            'xlink:show' => array('xlink', 'show', self::NS_XLINK),
-            'xlink:title' => array('xlink', 'title', self::NS_XLINK),
-            'xlink:type' => array('xlink', 'type', self::NS_XLINK),
-            'xml:base' => array('xml', 'base', self::NS_XML),
-            'xml:lang' => array('xml', 'lang', self::NS_XML),
-            'xml:space' => array('xml', 'space', self::NS_XML),
-            'xmlns' => array(null, 'xmlns', self::NS_XMLNS),
-            'xmlns:xlink' => array('xmlns', 'xlink', self::NS_XMLNS),
-        );
-        foreach ($token['attr'] as &$kp) {
-            if (isset($lookup[$kp['name']])) {
-                $kp['name'] = $lookup[$kp['name']];
-            }
-        }
-        return $token;
-    }
-
-    public function insertForeignElement($token, $namespaceURI) {
-        $el = $this->dom->createElementNS($namespaceURI, $token['name']);
-        if (!empty($token['attr'])) {
-            foreach ($token['attr'] as $kp) {
-                $attr = $kp['name'];
-                if (is_array($attr)) {
-                    $ns = $attr[2];
-                    $attr = $attr[1];
-                } else {
-                    $ns = self::NS_HTML;
-                }
-                if (!$el->hasAttributeNS($ns, $attr)) {
-                    // XSKETCHY: work around godawful libxml bug
-                    if ($ns === self::NS_XLINK) {
-                        $el->setAttribute('xlink:'.$attr, $kp['value']);
-                    } elseif ($ns === self::NS_HTML) {
-                        // Another godawful libxml bug
-                        $el->setAttribute($attr, $kp['value']);
-                    } else {
-                        $el->setAttributeNS($ns, $attr, $kp['value']);
-                    }
-                }
-            }
-        }
-        $this->appendToRealParent($el);
-        $this->stack[] = $el;
-        // XERROR: see below
-        /* If the newly created element has an xmlns attribute in the XMLNS 
-         * namespace  whose value is not exactly the same as the element's 
-         * namespace, that is a parse error. Similarly, if the newly created 
-         * element has an xmlns:xlink attribute in the XMLNS namespace whose 
-         * value is not the XLink Namespace, that is a parse error. */
-    }
-
-    public function save() {
-        $this->dom->normalize();
-        if (!$this->fragment) {
-            return $this->dom;
-        } else {
-            if ($this->root) {
-                return $this->root->childNodes;
-            } else {
-                return $this->dom->childNodes;
-            }
-        }
-    }
-}
-
diff --git a/library/HTML5/named-character-references.ser b/library/HTML5/named-character-references.ser
deleted file mode 100644
index 3004c4b91..000000000
--- a/library/HTML5/named-character-references.ser
+++ /dev/null
@@ -1 +0,0 @@
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\ No newline at end of file