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Directory >> /home/whitjouh/public_html/core/vendor/masterminds/html5/src/HTML5/Parser/

File / Folder	Size	Action
.	-
CharacterReference.php	1.495KB	edt ren
DOMTreeBuilder.php	22.257KB	edt ren
EventHandler.php	3.59KB	edt ren
FileInputStream.php	1.134KB	edt ren
InputStream.php	2.44KB	edt ren
ParseError.php	0.127KB	edt ren
README.md	1.659KB	edt ren
Scanner.php	11.191KB	edt ren
StringInputStream.php	9.307KB	edt ren
Tokenizer.php	35.683KB	edt ren
TreeBuildingRules.php	3.196KB	edt ren
UTF8Utils.php	7.105KB	edt ren

<?php

namespace Masterminds\HTML5\Parser;

use Masterminds\HTML5\Exception;

/**
 * The scanner scans over a given data input to react appropriately to characters.
 */
class Scanner
{
    const CHARS_HEX = 'abcdefABCDEF01234567890';
    const CHARS_ALNUM = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890';
    const CHARS_ALPHA = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';

/**
     * 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();

/**
     * Create a new Scanner.
     *
     * @param string $data     Data to parse.
     * @param string $encoding The encoding to use for the data.
     *
     * @throws Exception If the given data cannot be encoded to UTF-8.
     */
    public function __construct($data, $encoding = 'UTF-8')
    {
        if ($data instanceof InputStream) {
            @trigger_error('InputStream objects are deprecated since version 2.4 and will be removed in 3.0. Use strings instead.', E_USER_DEPRECATED);
            $data = (string) $data;
        }

$data = UTF8Utils::convertToUTF8($data, $encoding);

// There is good reason to question whether it makes sense to
        // do this here, since most of these checks are done during
        // parsing, and since this check doesn't actually *do* anything.
        $this->errors = UTF8Utils::checkForIllegalCodepoints($data);

$data = $this->replaceLinefeeds($data);

$this->data = $data;
        $this->char = 0;
        $this->EOF = strlen($data);
    }

/**
     * 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   $caseSensitive
     *
     * @return bool
     */
    public function sequenceMatches($sequence, $caseSensitive = true)
    {
        $portion = substr($this->data, $this->char, strlen($sequence));

return $caseSensitive ? $portion === $sequence : 0 === strcasecmp($portion, $sequence);
    }

/**
     * Get the current position.
     *
     * @return int The current intiger byte position.
     */
    public function position()
    {
        return $this->char;
    }

/**
     * Take a peek at the next character in the data.
     *
     * @return string The next character.
     */
    public function peek()
    {
        if (($this->char + 1) < $this->EOF) {
            return $this->data[$this->char + 1];
        }

return false;
    }

/**
     * Get the next character.
     * Note: This advances the pointer.
     *
     * @return string The next character.
     */
    public function next()
    {
        ++$this->char;

if ($this->char < $this->EOF) {
            return $this->data[$this->char];
        }

return false;
    }

/**
     * Get the current character.
     * Note, this does not advance the pointer.
     *
     * @return string The current character.
     */
    public function current()
    {
        if ($this->char < $this->EOF) {
            return $this->data[$this->char];
        }

return false;
    }

/**
     * Silently consume N chars.
     *
     * @param int $count
     */
    public function consume($count = 1)
    {
        $this->char += $count;
    }

/**
     * Unconsume some of the data.
     * This moves the data pointer backwards.
     *
     * @param int $howMany The number of characters to move the pointer back.
     */
    public function unconsume($howMany = 1)
    {
        if (($this->char - $howMany) >= 0) {
            $this->char -= $howMany;
        }
    }

/**
     * Get the next group of that contains hex characters.
     * Note, along with getting the characters the pointer in the data will be
     * moved as well.
     *
     * @return string The next group that is hex characters.
     */
    public function getHex()
    {
        return $this->doCharsWhile(static::CHARS_HEX);
    }

/**
     * Get the next group of characters that are ASCII Alpha characters.
     * Note, along with getting the characters the pointer in the data will be
     * moved as well.
     *
     * @return string The next group of ASCII alpha characters.
     */
    public function getAsciiAlpha()
    {
        return $this->doCharsWhile(static::CHARS_ALPHA);
    }

/**
     * Get the next group of characters that are ASCII Alpha characters and numbers.
     * Note, along with getting the characters the pointer in the data will be
     * moved as well.
     *
     * @return string The next group of ASCII alpha characters and numbers.
     */
    public function getAsciiAlphaNum()
    {
        return $this->doCharsWhile(static::CHARS_ALNUM);
    }

/**
     * Get the next group of numbers.
     * Note, along with getting the characters the pointer in the data will be
     * moved as well.
     *
     * @return string The next group of numbers.
     */
    public function getNumeric()
    {
        return $this->doCharsWhile('0123456789');
    }

/**
     * Consume whitespace.
     * Whitespace in HTML5 is: formfeed, tab, newline, space.
     *
     * @return int The length of the matched whitespaces.
     */
    public function whitespace()
    {
        if ($this->char >= $this->EOF) {
            return false;
        }

$len = strspn($this->data, "\n\t\f ", $this->char);

$this->char += $len;

return $len;
    }

/**
     * Returns the current line that is being consumed.
     *
     * @return int The current line number.
     */
    public function currentLine()
    {
        if (empty($this->EOF) || 0 === $this->char) {
            return 1;
        }

// 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;
    }

/**
     * Read chars until something in the mask is encountered.
     *
     * @param string $mask
     *
     * @return mixed
     */
    public function charsUntil($mask)
    {
        return $this->doCharsUntil($mask);
    }

/**
     * Read chars as long as the mask matches.
     *
     * @param string $mask
     *
     * @return int
     */
    public function charsWhile($mask)
    {
        return $this->doCharsWhile($mask);
    }

/**
     * Returns the current column of the current line that the tokenizer is at.
     *
     * Newlines are column 0. The first char after a newline is column 1.
     *
     * @return int The column number.
     */
    public function columnOffset()
    {
        // Short circuit for the first char.
        if (0 === $this->char) {
            return 0;
        }

// 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.
        $backwardFrom = $this->char - 1 - strlen($this->data);
        $lastLine = strrpos($this->data, "\n", $backwardFrom);

// 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 (false !== $lastLine) {
            $findLengthOf = substr($this->data, $lastLine + 1, $this->char - 1 - $lastLine);
        } else {
            // After a newline.
            $findLengthOf = substr($this->data, 0, $this->char);
        }

return UTF8Utils::countChars($findLengthOf);
    }

/**
     * Get all characters until EOF.
     *
     * This consumes characters until the EOF.
     *
     * @return int The number of characters remaining.
     */
    public function remainingChars()
    {
        if ($this->char < $this->EOF) {
            $data = substr($this->data, $this->char);
            $this->char = $this->EOF;

return $data;
        }

return ''; // false;
    }

/**
     * Replace linefeed characters according to the spec.
     *
     * @param $data
     *
     * @return string
     */
    private function replaceLinefeeds($data)
    {
        /*
         * 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.
         */
        $crlfTable = array(
            "\0" => "\xEF\xBF\xBD",
            "\r\n" => "\n",
            "\r" => "\n",
        );

return strtr($data, $crlfTable);
    }

/**
     * Read to a particular match (or until $max bytes are consumed).
     *
     * This operates on byte sequences, not characters.
     *
     * Matches as far as possible until we reach a certain set of bytes
     * and returns the matched substring.
     *
     * @param string $bytes Bytes to match.
     * @param int    $max   Maximum number of bytes to scan.
     *
     * @return mixed Index or false if no match is found. You should use strong
     *               equality when checking the result, since index could be 0.
     */
    private function doCharsUntil($bytes, $max = null)
    {
        if ($this->char >= $this->EOF) {
            return false;
        }

if (0 === $max || $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;
    }

/**
     * Returns the string so long as $bytes matches.
     *
     * Matches as far as possible with a certain set of bytes
     * and returns the matched substring.
     *
     * @param string $bytes A mask of bytes to match. If ANY byte in this mask matches the
     *                      current char, the pointer advances and the char is part of the
     *                      substring.
     * @param int    $max   The max number of chars to read.
     *
     * @return string
     */
    private function doCharsWhile($bytes, $max = null)
    {
        if ($this->char >= $this->EOF) {
            return false;
        }

if (0 === $max || $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;
    }
}