From 8ea537123d1cef38f25f9fbe92e3a9c0f89de55a Mon Sep 17 00:00:00 2001
From: Andrew Dolgov <noreply@fakecake.org>
Date: Tue, 13 Dec 2022 20:08:43 +0300
Subject: move af_readability out of master tree

---
 .../html5/src/HTML5/Parser/Tokenizer.php           | 1191 --------------------
 1 file changed, 1191 deletions(-)
 delete mode 100644 plugins/af_readability/vendor/masterminds/html5/src/HTML5/Parser/Tokenizer.php

(limited to 'plugins/af_readability/vendor/masterminds/html5/src/HTML5/Parser/Tokenizer.php')

diff --git a/plugins/af_readability/vendor/masterminds/html5/src/HTML5/Parser/Tokenizer.php b/plugins/af_readability/vendor/masterminds/html5/src/HTML5/Parser/Tokenizer.php
deleted file mode 100644
index 300a44626..000000000
--- a/plugins/af_readability/vendor/masterminds/html5/src/HTML5/Parser/Tokenizer.php
+++ /dev/null
@@ -1,1191 +0,0 @@
-<?php
-
-namespace Masterminds\HTML5\Parser;
-
-use Masterminds\HTML5\Elements;
-
-/**
- * The HTML5 tokenizer.
- *
- * The tokenizer's role is reading data from the scanner and gathering it into
- * semantic units. From the tokenizer, data is emitted to an event handler,
- * which may (for example) create a DOM tree.
- *
- * The HTML5 specification has a detailed explanation of tokenizing HTML5. We
- * follow that specification to the maximum extent that we can. If you find
- * a discrepancy that is not documented, please file a bug and/or submit a
- * patch.
- *
- * This tokenizer is implemented as a recursive descent parser.
- *
- * Within the API documentation, you may see references to the specific section
- * of the HTML5 spec that the code attempts to reproduce. Example: 8.2.4.1.
- * This refers to section 8.2.4.1 of the HTML5 CR specification.
- *
- * @see http://www.w3.org/TR/2012/CR-html5-20121217/
- */
-class Tokenizer
-{
-    protected $scanner;
-
-    protected $events;
-
-    protected $tok;
-
-    /**
-     * Buffer for text.
-     */
-    protected $text = '';
-
-    // When this goes to false, the parser stops.
-    protected $carryOn = true;
-
-    protected $textMode = 0; // TEXTMODE_NORMAL;
-    protected $untilTag = null;
-
-    const CONFORMANT_XML = 'xml';
-    const CONFORMANT_HTML = 'html';
-    protected $mode = self::CONFORMANT_HTML;
-
-    /**
-     * Create a new tokenizer.
-     *
-     * Typically, parsing a document involves creating a new tokenizer, giving
-     * it a scanner (input) and an event handler (output), and then calling
-     * the Tokenizer::parse() method.`
-     *
-     * @param Scanner      $scanner      A scanner initialized with an input stream.
-     * @param EventHandler $eventHandler An event handler, initialized and ready to receive events.
-     * @param string       $mode
-     */
-    public function __construct($scanner, $eventHandler, $mode = self::CONFORMANT_HTML)
-    {
-        $this->scanner = $scanner;
-        $this->events = $eventHandler;
-        $this->mode = $mode;
-    }
-
-    /**
-     * Begin parsing.
-     *
-     * This will begin scanning the document, tokenizing as it goes.
-     * Tokens are emitted into the event handler.
-     *
-     * Tokenizing will continue until the document is completely
-     * read. Errors are emitted into the event handler, but
-     * the parser will attempt to continue parsing until the
-     * entire input stream is read.
-     */
-    public function parse()
-    {
-        do {
-            $this->consumeData();
-            // FIXME: Add infinite loop protection.
-        } while ($this->carryOn);
-    }
-
-    /**
-     * Set the text mode for the character data reader.
-     *
-     * HTML5 defines three different modes for reading text:
-     * - Normal: Read until a tag is encountered.
-     * - RCDATA: Read until a tag is encountered, but skip a few otherwise-
-     * special characters.
-     * - Raw: Read until a special closing tag is encountered (viz. pre, script)
-     *
-     * This allows those modes to be set.
-     *
-     * Normally, setting is done by the event handler via a special return code on
-     * startTag(), but it can also be set manually using this function.
-     *
-     * @param int    $textmode One of Elements::TEXT_*.
-     * @param string $untilTag The tag that should stop RAW or RCDATA mode. Normal mode does not
-     *                         use this indicator.
-     */
-    public function setTextMode($textmode, $untilTag = null)
-    {
-        $this->textMode = $textmode & (Elements::TEXT_RAW | Elements::TEXT_RCDATA);
-        $this->untilTag = $untilTag;
-    }
-
-    /**
-     * Consume a character and make a move.
-     * HTML5 8.2.4.1.
-     */
-    protected function consumeData()
-    {
-        $tok = $this->scanner->current();
-
-        if ('&' === $tok) {
-            // Character reference
-            $ref = $this->decodeCharacterReference();
-            $this->buffer($ref);
-
-            $tok = $this->scanner->current();
-        }
-
-        // Parse tag
-        if ('<' === $tok) {
-            // Any buffered text data can go out now.
-            $this->flushBuffer();
-
-            $tok = $this->scanner->next();
-
-            if ('!' === $tok) {
-                $this->markupDeclaration();
-            } elseif ('/' === $tok) {
-                $this->endTag();
-            } elseif ('?' === $tok) {
-                $this->processingInstruction();
-            } elseif (ctype_alpha($tok)) {
-                $this->tagName();
-            } else {
-                $this->parseError('Illegal tag opening');
-                // TODO is this necessary ?
-                $this->characterData();
-            }
-
-            $tok = $this->scanner->current();
-        }
-
-        if (false === $tok) {
-            // Handle end of document
-            $this->eof();
-        } else {
-            // Parse character
-            switch ($this->textMode) {
-                case Elements::TEXT_RAW:
-                    $this->rawText($tok);
-                    break;
-
-                case Elements::TEXT_RCDATA:
-                    $this->rcdata($tok);
-                    break;
-
-                default:
-                    if ('<' === $tok || '&' === $tok) {
-                        break;
-                    }
-
-                    // NULL character
-                    if ("\00" === $tok) {
-                        $this->parseError('Received null character.');
-
-                        $this->text .= $tok;
-                        $this->scanner->consume();
-
-                        break;
-                    }
-
-                    $this->text .= $this->scanner->charsUntil("<&\0");
-            }
-        }
-
-        return $this->carryOn;
-    }
-
-    /**
-     * Parse anything that looks like character data.
-     *
-     * Different rules apply based on the current text mode.
-     *
-     * @see Elements::TEXT_RAW Elements::TEXT_RCDATA.
-     */
-    protected function characterData()
-    {
-        $tok = $this->scanner->current();
-        if (false === $tok) {
-            return false;
-        }
-        switch ($this->textMode) {
-            case Elements::TEXT_RAW:
-                return $this->rawText($tok);
-            case Elements::TEXT_RCDATA:
-                return $this->rcdata($tok);
-            default:
-                if ('<' === $tok || '&' === $tok) {
-                    return false;
-                }
-
-                return $this->text($tok);
-        }
-    }
-
-    /**
-     * This buffers the current token as character data.
-     *
-     * @param string $tok The current token.
-     *
-     * @return bool
-     */
-    protected function text($tok)
-    {
-        // This should never happen...
-        if (false === $tok) {
-            return false;
-        }
-
-        // NULL character
-        if ("\00" === $tok) {
-            $this->parseError('Received null character.');
-        }
-
-        $this->buffer($tok);
-        $this->scanner->consume();
-
-        return true;
-    }
-
-    /**
-     * Read text in RAW mode.
-     *
-     * @param string $tok The current token.
-     *
-     * @return bool
-     */
-    protected function rawText($tok)
-    {
-        if (is_null($this->untilTag)) {
-            return $this->text($tok);
-        }
-
-        $sequence = '</' . $this->untilTag . '>';
-        $txt = $this->readUntilSequence($sequence);
-        $this->events->text($txt);
-        $this->setTextMode(0);
-
-        return $this->endTag();
-    }
-
-    /**
-     * Read text in RCDATA mode.
-     *
-     * @param string $tok The current token.
-     *
-     * @return bool
-     */
-    protected function rcdata($tok)
-    {
-        if (is_null($this->untilTag)) {
-            return $this->text($tok);
-        }
-
-        $sequence = '</' . $this->untilTag;
-        $txt = '';
-
-        $caseSensitive = !Elements::isHtml5Element($this->untilTag);
-        while (false !== $tok && !('<' == $tok && ($this->scanner->sequenceMatches($sequence, $caseSensitive)))) {
-            if ('&' == $tok) {
-                $txt .= $this->decodeCharacterReference();
-                $tok = $this->scanner->current();
-            } else {
-                $txt .= $tok;
-                $tok = $this->scanner->next();
-            }
-        }
-        $len = strlen($sequence);
-        $this->scanner->consume($len);
-        $len += $this->scanner->whitespace();
-        if ('>' !== $this->scanner->current()) {
-            $this->parseError('Unclosed RCDATA end tag');
-        }
-
-        $this->scanner->unconsume($len);
-        $this->events->text($txt);
-        $this->setTextMode(0);
-
-        return $this->endTag();
-    }
-
-    /**
-     * If the document is read, emit an EOF event.
-     */
-    protected function eof()
-    {
-        // fprintf(STDOUT, "EOF");
-        $this->flushBuffer();
-        $this->events->eof();
-        $this->carryOn = false;
-    }
-
-    /**
-     * Look for markup.
-     */
-    protected function markupDeclaration()
-    {
-        $tok = $this->scanner->next();
-
-        // Comment:
-        if ('-' == $tok && '-' == $this->scanner->peek()) {
-            $this->scanner->consume(2);
-
-            return $this->comment();
-        } elseif ('D' == $tok || 'd' == $tok) { // Doctype
-            return $this->doctype();
-        } elseif ('[' == $tok) { // CDATA section
-            return $this->cdataSection();
-        }
-
-        // FINISH
-        $this->parseError('Expected <!--, <![CDATA[, or <!DOCTYPE. Got <!%s', $tok);
-        $this->bogusComment('<!');
-
-        return true;
-    }
-
-    /**
-     * Consume an end tag. See section 8.2.4.9.
-     */
-    protected function endTag()
-    {
-        if ('/' != $this->scanner->current()) {
-            return false;
-        }
-        $tok = $this->scanner->next();
-
-        // a-zA-Z -> tagname
-        // > -> parse error
-        // EOF -> parse error
-        // -> parse error
-        if (!ctype_alpha($tok)) {
-            $this->parseError("Expected tag name, got '%s'", $tok);
-            if ("\0" == $tok || false === $tok) {
-                return false;
-            }
-
-            return $this->bogusComment('</');
-        }
-
-        $name = $this->scanner->charsUntil("\n\f \t>");
-        $name = self::CONFORMANT_XML === $this->mode ? $name : strtolower($name);
-        // Trash whitespace.
-        $this->scanner->whitespace();
-
-        $tok = $this->scanner->current();
-        if ('>' != $tok) {
-            $this->parseError("Expected >, got '%s'", $tok);
-            // We just trash stuff until we get to the next tag close.
-            $this->scanner->charsUntil('>');
-        }
-
-        $this->events->endTag($name);
-        $this->scanner->consume();
-
-        return true;
-    }
-
-    /**
-     * Consume a tag name and body. See section 8.2.4.10.
-     */
-    protected function tagName()
-    {
-        // We know this is at least one char.
-        $name = $this->scanner->charsWhile(':_-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz');
-        $name = self::CONFORMANT_XML === $this->mode ? $name : strtolower($name);
-        $attributes = array();
-        $selfClose = false;
-
-        // Handle attribute parse exceptions here so that we can
-        // react by trying to build a sensible parse tree.
-        try {
-            do {
-                $this->scanner->whitespace();
-                $this->attribute($attributes);
-            } while (!$this->isTagEnd($selfClose));
-        } catch (ParseError $e) {
-            $selfClose = false;
-        }
-
-        $mode = $this->events->startTag($name, $attributes, $selfClose);
-
-        if (is_int($mode)) {
-            $this->setTextMode($mode, $name);
-        }
-
-        $this->scanner->consume();
-
-        return true;
-    }
-
-    /**
-     * Check if the scanner has reached the end of a tag.
-     */
-    protected function isTagEnd(&$selfClose)
-    {
-        $tok = $this->scanner->current();
-        if ('/' == $tok) {
-            $this->scanner->consume();
-            $this->scanner->whitespace();
-            $tok = $this->scanner->current();
-
-            if ('>' == $tok) {
-                $selfClose = true;
-
-                return true;
-            }
-            if (false === $tok) {
-                $this->parseError('Unexpected EOF inside of tag.');
-
-                return true;
-            }
-            // Basically, we skip the / token and go on.
-            // See 8.2.4.43.
-            $this->parseError("Unexpected '%s' inside of a tag.", $tok);
-
-            return false;
-        }
-
-        if ('>' == $tok) {
-            return true;
-        }
-        if (false === $tok) {
-            $this->parseError('Unexpected EOF inside of tag.');
-
-            return true;
-        }
-
-        return false;
-    }
-
-    /**
-     * Parse attributes from inside of a tag.
-     *
-     * @param string[] $attributes
-     *
-     * @return bool
-     *
-     * @throws ParseError
-     */
-    protected function attribute(&$attributes)
-    {
-        $tok = $this->scanner->current();
-        if ('/' == $tok || '>' == $tok || false === $tok) {
-            return false;
-        }
-
-        if ('<' == $tok) {
-            $this->parseError("Unexpected '<' inside of attributes list.");
-            // Push the < back onto the stack.
-            $this->scanner->unconsume();
-            // Let the caller figure out how to handle this.
-            throw new ParseError('Start tag inside of attribute.');
-        }
-
-        $name = strtolower($this->scanner->charsUntil("/>=\n\f\t "));
-
-        if (0 == strlen($name)) {
-            $tok = $this->scanner->current();
-            $this->parseError('Expected an attribute name, got %s.', $tok);
-            // Really, only '=' can be the char here. Everything else gets absorbed
-            // under one rule or another.
-            $name = $tok;
-            $this->scanner->consume();
-        }
-
-        $isValidAttribute = true;
-        // Attribute names can contain most Unicode characters for HTML5.
-        // But method "DOMElement::setAttribute" is throwing exception
-        // because of it's own internal restriction so these have to be filtered.
-        // see issue #23: https://github.com/Masterminds/html5-php/issues/23
-        // and http://www.w3.org/TR/2011/WD-html5-20110525/syntax.html#syntax-attribute-name
-        if (preg_match("/[\x1-\x2C\\/\x3B-\x40\x5B-\x5E\x60\x7B-\x7F]/u", $name)) {
-            $this->parseError('Unexpected characters in attribute name: %s', $name);
-            $isValidAttribute = false;
-        }         // There is no limitation for 1st character in HTML5.
-        // But method "DOMElement::setAttribute" is throwing exception for the
-        // characters below so they have to be filtered.
-        // see issue #23: https://github.com/Masterminds/html5-php/issues/23
-        // and http://www.w3.org/TR/2011/WD-html5-20110525/syntax.html#syntax-attribute-name
-        elseif (preg_match('/^[0-9.-]/u', $name)) {
-            $this->parseError('Unexpected character at the begining of attribute name: %s', $name);
-            $isValidAttribute = false;
-        }
-        // 8.1.2.3
-        $this->scanner->whitespace();
-
-        $val = $this->attributeValue();
-        if ($isValidAttribute) {
-            $attributes[$name] = $val;
-        }
-
-        return true;
-    }
-
-    /**
-     * Consume an attribute value. See section 8.2.4.37 and after.
-     *
-     * @return string|null
-     */
-    protected function attributeValue()
-    {
-        if ('=' != $this->scanner->current()) {
-            return null;
-        }
-        $this->scanner->consume();
-        // 8.1.2.3
-        $this->scanner->whitespace();
-
-        $tok = $this->scanner->current();
-        switch ($tok) {
-            case "\n":
-            case "\f":
-            case ' ':
-            case "\t":
-                // Whitespace here indicates an empty value.
-                return null;
-            case '"':
-            case "'":
-                $this->scanner->consume();
-
-                return $this->quotedAttributeValue($tok);
-            case '>':
-                // case '/': // 8.2.4.37 seems to allow foo=/ as a valid attr.
-                $this->parseError('Expected attribute value, got tag end.');
-
-                return null;
-            case '=':
-            case '`':
-                $this->parseError('Expecting quotes, got %s.', $tok);
-
-                return $this->unquotedAttributeValue();
-            default:
-                return $this->unquotedAttributeValue();
-        }
-    }
-
-    /**
-     * Get an attribute value string.
-     *
-     * @param string $quote IMPORTANT: This is a series of chars! Any one of which will be considered
-     *                      termination of an attribute's value. E.g. "\"'" will stop at either
-     *                      ' or ".
-     *
-     * @return string The attribute value.
-     */
-    protected function quotedAttributeValue($quote)
-    {
-        $stoplist = "\f" . $quote;
-        $val = '';
-
-        while (true) {
-            $tokens = $this->scanner->charsUntil($stoplist . '&');
-            if (false !== $tokens) {
-                $val .= $tokens;
-            } else {
-                break;
-            }
-
-            $tok = $this->scanner->current();
-            if ('&' == $tok) {
-                $val .= $this->decodeCharacterReference(true);
-                continue;
-            }
-            break;
-        }
-        $this->scanner->consume();
-
-        return $val;
-    }
-
-    protected function unquotedAttributeValue()
-    {
-        $val = '';
-        $tok = $this->scanner->current();
-        while (false !== $tok) {
-            switch ($tok) {
-                case "\n":
-                case "\f":
-                case ' ':
-                case "\t":
-                case '>':
-                    break 2;
-
-                case '&':
-                    $val .= $this->decodeCharacterReference(true);
-                    $tok = $this->scanner->current();
-
-                    break;
-
-                case "'":
-                case '"':
-                case '<':
-                case '=':
-                case '`':
-                    $this->parseError('Unexpected chars in unquoted attribute value %s', $tok);
-                    $val .= $tok;
-                    $tok = $this->scanner->next();
-                    break;
-
-                default:
-                    $val .= $this->scanner->charsUntil("\t\n\f >&\"'<=`");
-
-                    $tok = $this->scanner->current();
-            }
-        }
-
-        return $val;
-    }
-
-    /**
-     * Consume malformed markup as if it were a comment.
-     * 8.2.4.44.
-     *
-     * The spec requires that the ENTIRE tag-like thing be enclosed inside of
-     * the comment. So this will generate comments like:
-     *
-     * &lt;!--&lt/+foo&gt;--&gt;
-     *
-     * @param string $leading Prepend any leading characters. This essentially
-     *                        negates the need to backtrack, but it's sort of a hack.
-     *
-     * @return bool
-     */
-    protected function bogusComment($leading = '')
-    {
-        $comment = $leading;
-        $tokens = $this->scanner->charsUntil('>');
-        if (false !== $tokens) {
-            $comment .= $tokens;
-        }
-        $tok = $this->scanner->current();
-        if (false !== $tok) {
-            $comment .= $tok;
-        }
-
-        $this->flushBuffer();
-        $this->events->comment($comment);
-        $this->scanner->consume();
-
-        return true;
-    }
-
-    /**
-     * Read a comment.
-     * Expects the first tok to be inside of the comment.
-     *
-     * @return bool
-     */
-    protected function comment()
-    {
-        $tok = $this->scanner->current();
-        $comment = '';
-
-        // <!-->. Emit an empty comment because 8.2.4.46 says to.
-        if ('>' == $tok) {
-            // Parse error. Emit the comment token.
-            $this->parseError("Expected comment data, got '>'");
-            $this->events->comment('');
-            $this->scanner->consume();
-
-            return true;
-        }
-
-        // Replace NULL with the replacement char.
-        if ("\0" == $tok) {
-            $tok = UTF8Utils::FFFD;
-        }
-        while (!$this->isCommentEnd()) {
-            $comment .= $tok;
-            $tok = $this->scanner->next();
-        }
-
-        $this->events->comment($comment);
-        $this->scanner->consume();
-
-        return true;
-    }
-
-    /**
-     * Check if the scanner has reached the end of a comment.
-     *
-     * @return bool
-     */
-    protected function isCommentEnd()
-    {
-        $tok = $this->scanner->current();
-
-        // EOF
-        if (false === $tok) {
-            // Hit the end.
-            $this->parseError('Unexpected EOF in a comment.');
-
-            return true;
-        }
-
-        // If it doesn't start with -, not the end.
-        if ('-' != $tok) {
-            return false;
-        }
-
-        // Advance one, and test for '->'
-        if ('-' == $this->scanner->next() && '>' == $this->scanner->peek()) {
-            $this->scanner->consume(); // Consume the last '>'
-            return true;
-        }
-        // Unread '-';
-        $this->scanner->unconsume(1);
-
-        return false;
-    }
-
-    /**
-     * Parse a DOCTYPE.
-     *
-     * Parse a DOCTYPE declaration. This method has strong bearing on whether or
-     * not Quirksmode is enabled on the event handler.
-     *
-     * @todo This method is a little long. Should probably refactor.
-     *
-     * @return bool
-     */
-    protected function doctype()
-    {
-        // Check that string is DOCTYPE.
-        if ($this->scanner->sequenceMatches('DOCTYPE', false)) {
-            $this->scanner->consume(7);
-        } else {
-            $chars = $this->scanner->charsWhile('DOCTYPEdoctype');
-            $this->parseError('Expected DOCTYPE, got %s', $chars);
-
-            return $this->bogusComment('<!' . $chars);
-        }
-
-        $this->scanner->whitespace();
-        $tok = $this->scanner->current();
-
-        // EOF: die.
-        if (false === $tok) {
-            $this->events->doctype('html5', EventHandler::DOCTYPE_NONE, '', true);
-            $this->eof();
-
-            return true;
-        }
-
-        // NULL char: convert.
-        if ("\0" === $tok) {
-            $this->parseError('Unexpected null character in DOCTYPE.');
-        }
-
-        $stop = " \n\f>";
-        $doctypeName = $this->scanner->charsUntil($stop);
-        // Lowercase ASCII, replace \0 with FFFD
-        $doctypeName = strtolower(strtr($doctypeName, "\0", UTF8Utils::FFFD));
-
-        $tok = $this->scanner->current();
-
-        // If false, emit a parse error, DOCTYPE, and return.
-        if (false === $tok) {
-            $this->parseError('Unexpected EOF in DOCTYPE declaration.');
-            $this->events->doctype($doctypeName, EventHandler::DOCTYPE_NONE, null, true);
-
-            return true;
-        }
-
-        // Short DOCTYPE, like <!DOCTYPE html>
-        if ('>' == $tok) {
-            // DOCTYPE without a name.
-            if (0 == strlen($doctypeName)) {
-                $this->parseError('Expected a DOCTYPE name. Got nothing.');
-                $this->events->doctype($doctypeName, 0, null, true);
-                $this->scanner->consume();
-
-                return true;
-            }
-            $this->events->doctype($doctypeName);
-            $this->scanner->consume();
-
-            return true;
-        }
-        $this->scanner->whitespace();
-
-        $pub = strtoupper($this->scanner->getAsciiAlpha());
-        $white = $this->scanner->whitespace();
-
-        // Get ID, and flag it as pub or system.
-        if (('PUBLIC' == $pub || 'SYSTEM' == $pub) && $white > 0) {
-            // Get the sys ID.
-            $type = 'PUBLIC' == $pub ? EventHandler::DOCTYPE_PUBLIC : EventHandler::DOCTYPE_SYSTEM;
-            $id = $this->quotedString("\0>");
-            if (false === $id) {
-                $this->events->doctype($doctypeName, $type, $pub, false);
-
-                return true;
-            }
-
-            // Premature EOF.
-            if (false === $this->scanner->current()) {
-                $this->parseError('Unexpected EOF in DOCTYPE');
-                $this->events->doctype($doctypeName, $type, $id, true);
-
-                return true;
-            }
-
-            // Well-formed complete DOCTYPE.
-            $this->scanner->whitespace();
-            if ('>' == $this->scanner->current()) {
-                $this->events->doctype($doctypeName, $type, $id, false);
-                $this->scanner->consume();
-
-                return true;
-            }
-
-            // If we get here, we have <!DOCTYPE foo PUBLIC "bar" SOME_JUNK
-            // Throw away the junk, parse error, quirks mode, return true.
-            $this->scanner->charsUntil('>');
-            $this->parseError('Malformed DOCTYPE.');
-            $this->events->doctype($doctypeName, $type, $id, true);
-            $this->scanner->consume();
-
-            return true;
-        }
-
-        // Else it's a bogus DOCTYPE.
-        // Consume to > and trash.
-        $this->scanner->charsUntil('>');
-
-        $this->parseError('Expected PUBLIC or SYSTEM. Got %s.', $pub);
-        $this->events->doctype($doctypeName, 0, null, true);
-        $this->scanner->consume();
-
-        return true;
-    }
-
-    /**
-     * Utility for reading a quoted string.
-     *
-     * @param string $stopchars Characters (in addition to a close-quote) that should stop the string.
-     *                          E.g. sometimes '>' is higher precedence than '"' or "'".
-     *
-     * @return mixed String if one is found (quotations omitted).
-     */
-    protected function quotedString($stopchars)
-    {
-        $tok = $this->scanner->current();
-        if ('"' == $tok || "'" == $tok) {
-            $this->scanner->consume();
-            $ret = $this->scanner->charsUntil($tok . $stopchars);
-            if ($this->scanner->current() == $tok) {
-                $this->scanner->consume();
-            } else {
-                // Parse error because no close quote.
-                $this->parseError('Expected %s, got %s', $tok, $this->scanner->current());
-            }
-
-            return $ret;
-        }
-
-        return false;
-    }
-
-    /**
-     * Handle a CDATA section.
-     *
-     * @return bool
-     */
-    protected function cdataSection()
-    {
-        $cdata = '';
-        $this->scanner->consume();
-
-        $chars = $this->scanner->charsWhile('CDAT');
-        if ('CDATA' != $chars || '[' != $this->scanner->current()) {
-            $this->parseError('Expected [CDATA[, got %s', $chars);
-
-            return $this->bogusComment('<![' . $chars);
-        }
-
-        $tok = $this->scanner->next();
-        do {
-            if (false === $tok) {
-                $this->parseError('Unexpected EOF inside CDATA.');
-                $this->bogusComment('<![CDATA[' . $cdata);
-
-                return true;
-            }
-            $cdata .= $tok;
-            $tok = $this->scanner->next();
-        } while (!$this->scanner->sequenceMatches(']]>'));
-
-        // Consume ]]>
-        $this->scanner->consume(3);
-
-        $this->events->cdata($cdata);
-
-        return true;
-    }
-
-    // ================================================================
-    // Non-HTML5
-    // ================================================================
-
-    /**
-     * Handle a processing instruction.
-     *
-     * XML processing instructions are supposed to be ignored in HTML5,
-     * treated as "bogus comments". However, since we're not a user
-     * agent, we allow them. We consume until ?> and then issue a
-     * EventListener::processingInstruction() event.
-     *
-     * @return bool
-     */
-    protected function processingInstruction()
-    {
-        if ('?' != $this->scanner->current()) {
-            return false;
-        }
-
-        $tok = $this->scanner->next();
-        $procName = $this->scanner->getAsciiAlpha();
-        $white = $this->scanner->whitespace();
-
-        // If not a PI, send to bogusComment.
-        if (0 == strlen($procName) || 0 == $white || false == $this->scanner->current()) {
-            $this->parseError("Expected processing instruction name, got $tok");
-            $this->bogusComment('<?' . $tok . $procName);
-
-            return true;
-        }
-
-        $data = '';
-        // As long as it's not the case that the next two chars are ? and >.
-        while (!('?' == $this->scanner->current() && '>' == $this->scanner->peek())) {
-            $data .= $this->scanner->current();
-
-            $tok = $this->scanner->next();
-            if (false === $tok) {
-                $this->parseError('Unexpected EOF in processing instruction.');
-                $this->events->processingInstruction($procName, $data);
-
-                return true;
-            }
-        }
-
-        $this->scanner->consume(2); // Consume the closing tag
-        $this->events->processingInstruction($procName, $data);
-
-        return true;
-    }
-
-    // ================================================================
-    // UTILITY FUNCTIONS
-    // ================================================================
-
-    /**
-     * Read from the input stream until we get to the desired sequene
-     * or hit the end of the input stream.
-     *
-     * @param string $sequence
-     *
-     * @return string
-     */
-    protected function readUntilSequence($sequence)
-    {
-        $buffer = '';
-
-        // Optimization for reading larger blocks faster.
-        $first = substr($sequence, 0, 1);
-        while (false !== $this->scanner->current()) {
-            $buffer .= $this->scanner->charsUntil($first);
-
-            // Stop as soon as we hit the stopping condition.
-            if ($this->scanner->sequenceMatches($sequence, false)) {
-                return $buffer;
-            }
-            $buffer .= $this->scanner->current();
-            $this->scanner->consume();
-        }
-
-        // If we get here, we hit the EOF.
-        $this->parseError('Unexpected EOF during text read.');
-
-        return $buffer;
-    }
-
-    /**
-     * Check if upcomming chars match the given sequence.
-     *
-     * This will read the stream for the $sequence. If it's
-     * found, this will return true. If not, return false.
-     * Since this unconsumes any chars it reads, the caller
-     * will still need to read the next sequence, even if
-     * this returns true.
-     *
-     * Example: $this->scanner->sequenceMatches('</script>') will
-     * see if the input stream is at the start of a
-     * '</script>' string.
-     *
-     * @param string $sequence
-     * @param bool   $caseSensitive
-     *
-     * @return bool
-     */
-    protected function sequenceMatches($sequence, $caseSensitive = true)
-    {
-        @trigger_error(__METHOD__ . ' method is deprecated since version 2.4 and will be removed in 3.0. Use Scanner::sequenceMatches() instead.', E_USER_DEPRECATED);
-
-        return $this->scanner->sequenceMatches($sequence, $caseSensitive);
-    }
-
-    /**
-     * Send a TEXT event with the contents of the text buffer.
-     *
-     * This emits an EventHandler::text() event with the current contents of the
-     * temporary text buffer. (The buffer is used to group as much PCDATA
-     * as we can instead of emitting lots and lots of TEXT events.)
-     */
-    protected function flushBuffer()
-    {
-        if ('' === $this->text) {
-            return;
-        }
-        $this->events->text($this->text);
-        $this->text = '';
-    }
-
-    /**
-     * Add text to the temporary buffer.
-     *
-     * @see flushBuffer()
-     *
-     * @param string $str
-     */
-    protected function buffer($str)
-    {
-        $this->text .= $str;
-    }
-
-    /**
-     * Emit a parse error.
-     *
-     * A parse error always returns false because it never consumes any
-     * characters.
-     *
-     * @param string $msg
-     *
-     * @return string
-     */
-    protected function parseError($msg)
-    {
-        $args = func_get_args();
-
-        if (count($args) > 1) {
-            array_shift($args);
-            $msg = vsprintf($msg, $args);
-        }
-
-        $line = $this->scanner->currentLine();
-        $col = $this->scanner->columnOffset();
-        $this->events->parseError($msg, $line, $col);
-
-        return false;
-    }
-
-    /**
-     * Decode a character reference and return the string.
-     *
-     * If $inAttribute is set to true, a bare & will be returned as-is.
-     *
-     * @param bool $inAttribute Set to true if the text is inside of an attribute value.
-     *                          false otherwise.
-     *
-     * @return string
-     */
-    protected function decodeCharacterReference($inAttribute = false)
-    {
-        // Next char after &.
-        $tok = $this->scanner->next();
-        $start = $this->scanner->position();
-
-        if (false === $tok) {
-            return '&';
-        }
-
-        // These indicate not an entity. We return just
-        // the &.
-        if ("\t" === $tok || "\n" === $tok || "\f" === $tok || ' ' === $tok || '&' === $tok || '<' === $tok) {
-            // $this->scanner->next();
-            return '&';
-        }
-
-        // Numeric entity
-        if ('#' === $tok) {
-            $tok = $this->scanner->next();
-
-            if (false === $tok) {
-                $this->parseError('Expected &#DEC; &#HEX;, got EOF');
-                $this->scanner->unconsume(1);
-
-                return '&';
-            }
-
-            // Hexidecimal encoding.
-            // X[0-9a-fA-F]+;
-            // x[0-9a-fA-F]+;
-            if ('x' === $tok || 'X' === $tok) {
-                $tok = $this->scanner->next(); // Consume x
-
-                // Convert from hex code to char.
-                $hex = $this->scanner->getHex();
-                if (empty($hex)) {
-                    $this->parseError('Expected &#xHEX;, got &#x%s', $tok);
-                    // We unconsume because we don't know what parser rules might
-                    // be in effect for the remaining chars. For example. '&#>'
-                    // might result in a specific parsing rule inside of tag
-                    // contexts, while not inside of pcdata context.
-                    $this->scanner->unconsume(2);
-
-                    return '&';
-                }
-                $entity = CharacterReference::lookupHex($hex);
-            }             // Decimal encoding.
-            // [0-9]+;
-            else {
-                // Convert from decimal to char.
-                $numeric = $this->scanner->getNumeric();
-                if (false === $numeric) {
-                    $this->parseError('Expected &#DIGITS;, got &#%s', $tok);
-                    $this->scanner->unconsume(2);
-
-                    return '&';
-                }
-                $entity = CharacterReference::lookupDecimal($numeric);
-            }
-        } elseif ('=' === $tok && $inAttribute) {
-            return '&';
-        } else { // String entity.
-            // Attempt to consume a string up to a ';'.
-            // [a-zA-Z0-9]+;
-            $cname = $this->scanner->getAsciiAlphaNum();
-            $entity = CharacterReference::lookupName($cname);
-
-            // When no entity is found provide the name of the unmatched string
-            // and continue on as the & is not part of an entity. The & will
-            // be converted to &amp; elsewhere.
-            if (null === $entity) {
-                if (!$inAttribute || '' === $cname) {
-                    $this->parseError("No match in entity table for '%s'", $cname);
-                }
-                $this->scanner->unconsume($this->scanner->position() - $start);
-
-                return '&';
-            }
-        }
-
-        // The scanner has advanced the cursor for us.
-        $tok = $this->scanner->current();
-
-        // We have an entity. We're done here.
-        if (';' === $tok) {
-            $this->scanner->consume();
-
-            return $entity;
-        }
-
-        // Failing to match ; means unconsume the entire string.
-        $this->scanner->unconsume($this->scanner->position() - $start);
-
-        $this->parseError('Expected &ENTITY;, got &ENTITY%s (no trailing ;) ', $tok);
-
-        return '&';
-    }
-}
-- 
cgit v1.2.3