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Entities.php	22.13 KB	-rw-r--r--	2026-04-25 18:32:45	Edit Del
Editing: Entities.php (22.13 KB)

<?php

// SPDX-FileCopyrightText: 2004-2023 Ryan Parman, Sam Sneddon, Ryan McCue
// SPDX-License-Identifier: BSD-3-Clause

declare(strict_types=1);


/**
 * Decode HTML Entities
 *
 * This implements HTML5 as of revision 967 (2007-06-28)
 *
 * @deprecated Use DOMDocument instead!
 */
class SimplePie_Decode_HTML_Entities
{
    /**
     * Data to be parsed
     *
     * @access private
     * @var string
     */
    public $data = '';

    /**
     * Currently consumed bytes
     *
     * @access private
     * @var string
     */
    public $consumed = '';

    /**
     * Position of the current byte being parsed
     *
     * @access private
     * @var int
     */
    public $position = 0;

    /**
     * Create an instance of the class with the input data
     *
     * @access public
     * @param string $data Input data
     */
    public function __construct(string $data)
    {
        $this->data = $data;
    }

    /**
     * Parse the input data
     *
     * @access public
     * @return string Output data
     */
    public function parse()
    {
        while (($position = strpos($this->data, '&', $this->position)) !== false) {
            $this->position = $position;
            $this->consume();
            $this->entity();
            $this->consumed = '';
        }
        return $this->data;
    }

    /**
     * Consume the next byte
     *
     * @access private
     * @return string|false The next byte, or false, if there is no more data
     */
    public function consume()
    {
        if (isset($this->data[$this->position])) {
            $this->consumed .= $this->data[$this->position];
            return $this->data[$this->position++];
        }

        return false;
    }

    /**
     * Consume a range of characters
     *
     * @access private
     * @param string $chars Characters to consume
     * @return string|false A series of characters that match the range, or false
     */
    public function consume_range(string $chars)
    {
        if ($len = strspn($this->data, $chars, $this->position)) {
            $data = substr($this->data, $this->position, $len);
            $this->consumed .= $data;
            $this->position += $len;
            return $data;
        }

        return false;
    }

    /**
     * Unconsume one byte
     *
     * @access private
     * @return void
     */
    public function unconsume()
    {
        $this->consumed = substr($this->consumed, 0, -1);
        $this->position--;
    }

    /**
     * Decode an entity
     *
     * @access private
     * @return void
     */
    public function entity()
    {
        switch ($this->consume()) {
            case "\x09":
            case "\x0A":
            case "\x0B":
            case "\x0C":
            case "\x20":
            case "\x3C":
            case "\x26":
            case false:
                break;

            case "\x23":
                switch ($this->consume()) {
                    case "\x78":
                    case "\x58":
                        $range = '0123456789ABCDEFabcdef';
                        $hex = true;
                        break;

                    default:
                        $range = '0123456789';
                        $hex = false;
                        $this->unconsume();
                        break;
                }

                if ($codepoint = $this->consume_range($range)) {
                    static $windows_1252_specials = [0x0D => "\x0A", 0x80 => "\xE2\x82\xAC", 0x81 => "\xEF\xBF\xBD", 0x82 => "\xE2\x80\x9A", 0x83 => "\xC6\x92", 0x84 => "\xE2\x80\x9E", 0x85 => "\xE2\x80\xA6", 0x86 => "\xE2\x80\xA0", 0x87 => "\xE2\x80\xA1", 0x88 => "\xCB\x86", 0x89 => "\xE2\x80\xB0", 0x8A => "\xC5\xA0", 0x8B => "\xE2\x80\xB9", 0x8C => "\xC5\x92", 0x8D => "\xEF\xBF\xBD", 0x8E => "\xC5\xBD", 0x8F => "\xEF\xBF\xBD", 0x90 => "\xEF\xBF\xBD", 0x91 => "\xE2\x80\x98", 0x92 => "\xE2\x80\x99", 0x93 => "\xE2\x80\x9C", 0x94 => "\xE2\x80\x9D", 0x95 => "\xE2\x80\xA2", 0x96 => "\xE2\x80\x93", 0x97 => "\xE2\x80\x94", 0x98 => "\xCB\x9C", 0x99 => "\xE2\x84\xA2", 0x9A => "\xC5\xA1", 0x9B => "\xE2\x80\xBA", 0x9C => "\xC5\x93", 0x9D => "\xEF\xBF\xBD", 0x9E => "\xC5\xBE", 0x9F => "\xC5\xB8"];

                    if ($hex) {
                        // Cap to PHP_INT_MAX to ensure consistent behaviour if $codepoint is so large
                        // it cannot fit into int – just casting float to int might return junk (e.g. a negative number).
                        // If it is so large, `Misc::codepoint_to_utf8` will just return a replacement character.
                        $codepoint = (int) min(hexdec($codepoint), \PHP_INT_MAX);
                    } else {
                        // Casting string to int caps at PHP_INT_MAX automatically.
                        $codepoint = (int) $codepoint;
                    }

                    if (isset($windows_1252_specials[$codepoint])) {
                        $replacement = $windows_1252_specials[$codepoint];
                    } else {
                        $replacement = SimplePie_Misc::codepoint_to_utf8($codepoint);
                    }

                    if (!in_array($this->consume(), [';', false], true)) {
                        $this->unconsume();
                    }

                    $consumed_length = strlen($this->consumed);
                    $this->data = substr_replace($this->data, $replacement, $this->position - $consumed_length, $consumed_length);
                    $this->position += strlen($replacement) - $consumed_length;
                }
                break;

            default:
                static $entities = [
                    'Aacute' => "\xC3\x81",
                    'aacute' => "\xC3\xA1",
                    'Aacute;' => "\xC3\x81",
                    'aacute;' => "\xC3\xA1",
                    'Acirc' => "\xC3\x82",
                    'acirc' => "\xC3\xA2",
                    'Acirc;' => "\xC3\x82",
                    'acirc;' => "\xC3\xA2",
                    'acute' => "\xC2\xB4",
                    'acute;' => "\xC2\xB4",
                    'AElig' => "\xC3\x86",
                    'aelig' => "\xC3\xA6",
                    'AElig;' => "\xC3\x86",
                    'aelig;' => "\xC3\xA6",
                    'Agrave' => "\xC3\x80",
                    'agrave' => "\xC3\xA0",
                    'Agrave;' => "\xC3\x80",
                    'agrave;' => "\xC3\xA0",
                    'alefsym;' => "\xE2\x84\xB5",
                    'Alpha;' => "\xCE\x91",
                    'alpha;' => "\xCE\xB1",
                    'AMP' => "\x26",
                    'amp' => "\x26",
                    'AMP;' => "\x26",
                    'amp;' => "\x26",
                    'and;' => "\xE2\x88\xA7",
                    'ang;' => "\xE2\x88\xA0",
                    'apos;' => "\x27",
                    'Aring' => "\xC3\x85",
                    'aring' => "\xC3\xA5",
                    'Aring;' => "\xC3\x85",
                    'aring;' => "\xC3\xA5",
                    'asymp;' => "\xE2\x89\x88",
                    'Atilde' => "\xC3\x83",
                    'atilde' => "\xC3\xA3",
                    'Atilde;' => "\xC3\x83",
                    'atilde;' => "\xC3\xA3",
                    'Auml' => "\xC3\x84",
                    'auml' => "\xC3\xA4",
                    'Auml;' => "\xC3\x84",
                    'auml;' => "\xC3\xA4",
                    'bdquo;' => "\xE2\x80\x9E",
                    'Beta;' => "\xCE\x92",
                    'beta;' => "\xCE\xB2",
                    'brvbar' => "\xC2\xA6",
                    'brvbar;' => "\xC2\xA6",
                    'bull;' => "\xE2\x80\xA2",
                    'cap;' => "\xE2\x88\xA9",
                    'Ccedil' => "\xC3\x87",
                    'ccedil' => "\xC3\xA7",
                    'Ccedil;' => "\xC3\x87",
                    'ccedil;' => "\xC3\xA7",
                    'cedil' => "\xC2\xB8",
                    'cedil;' => "\xC2\xB8",
                    'cent' => "\xC2\xA2",
                    'cent;' => "\xC2\xA2",
                    'Chi;' => "\xCE\xA7",
                    'chi;' => "\xCF\x87",
                    'circ;' => "\xCB\x86",
                    'clubs;' => "\xE2\x99\xA3",
                    'cong;' => "\xE2\x89\x85",
                    'COPY' => "\xC2\xA9",
                    'copy' => "\xC2\xA9",
                    'COPY;' => "\xC2\xA9",
                    'copy;' => "\xC2\xA9",
                    'crarr;' => "\xE2\x86\xB5",
                    'cup;' => "\xE2\x88\xAA",
                    'curren' => "\xC2\xA4",
                    'curren;' => "\xC2\xA4",
                    'Dagger;' => "\xE2\x80\xA1",
                    'dagger;' => "\xE2\x80\xA0",
                    'dArr;' => "\xE2\x87\x93",
                    'darr;' => "\xE2\x86\x93",
                    'deg' => "\xC2\xB0",
                    'deg;' => "\xC2\xB0",
                    'Delta;' => "\xCE\x94",
                    'delta;' => "\xCE\xB4",
                    'diams;' => "\xE2\x99\xA6",
                    'divide' => "\xC3\xB7",
                    'divide;' => "\xC3\xB7",
                    'Eacute' => "\xC3\x89",
                    'eacute' => "\xC3\xA9",
                    'Eacute;' => "\xC3\x89",
                    'eacute;' => "\xC3\xA9",
                    'Ecirc' => "\xC3\x8A",
                    'ecirc' => "\xC3\xAA",
                    'Ecirc;' => "\xC3\x8A",
                    'ecirc;' => "\xC3\xAA",
                    'Egrave' => "\xC3\x88",
                    'egrave' => "\xC3\xA8",
                    'Egrave;' => "\xC3\x88",
                    'egrave;' => "\xC3\xA8",
                    'empty;' => "\xE2\x88\x85",
                    'emsp;' => "\xE2\x80\x83",
                    'ensp;' => "\xE2\x80\x82",
                    'Epsilon;' => "\xCE\x95",
                    'epsilon;' => "\xCE\xB5",
                    'equiv;' => "\xE2\x89\xA1",
                    'Eta;' => "\xCE\x97",
                    'eta;' => "\xCE\xB7",
                    'ETH' => "\xC3\x90",
                    'eth' => "\xC3\xB0",
                    'ETH;' => "\xC3\x90",
                    'eth;' => "\xC3\xB0",
                    'Euml' => "\xC3\x8B",
                    'euml' => "\xC3\xAB",
                    'Euml;' => "\xC3\x8B",
                    'euml;' => "\xC3\xAB",
                    'euro;' => "\xE2\x82\xAC",
                    'exist;' => "\xE2\x88\x83",
                    'fnof;' => "\xC6\x92",
                    'forall;' => "\xE2\x88\x80",
                    'frac12' => "\xC2\xBD",
                    'frac12;' => "\xC2\xBD",
                    'frac14' => "\xC2\xBC",
                    'frac14;' => "\xC2\xBC",
                    'frac34' => "\xC2\xBE",
                    'frac34;' => "\xC2\xBE",
                    'frasl;' => "\xE2\x81\x84",
                    'Gamma;' => "\xCE\x93",
                    'gamma;' => "\xCE\xB3",
                    'ge;' => "\xE2\x89\xA5",
                    'GT' => "\x3E",
                    'gt' => "\x3E",
                    'GT;' => "\x3E",
                    'gt;' => "\x3E",
                    'hArr;' => "\xE2\x87\x94",
                    'harr;' => "\xE2\x86\x94",
                    'hearts;' => "\xE2\x99\xA5",
                    'hellip;' => "\xE2\x80\xA6",
                    'Iacute' => "\xC3\x8D",
                    'iacute' => "\xC3\xAD",
                    'Iacute;' => "\xC3\x8D",
                    'iacute;' => "\xC3\xAD",
                    'Icirc' => "\xC3\x8E",
                    'icirc' => "\xC3\xAE",
                    'Icirc;' => "\xC3\x8E",
                    'icirc;' => "\xC3\xAE",
                    'iexcl' => "\xC2\xA1",
                    'iexcl;' => "\xC2\xA1",
                    'Igrave' => "\xC3\x8C",
                    'igrave' => "\xC3\xAC",
                    'Igrave;' => "\xC3\x8C",
                    'igrave;' => "\xC3\xAC",
                    'image;' => "\xE2\x84\x91",
                    'infin;' => "\xE2\x88\x9E",
                    'int;' => "\xE2\x88\xAB",
                    'Iota;' => "\xCE\x99",
                    'iota;' => "\xCE\xB9",
                    'iquest' => "\xC2\xBF",
                    'iquest;' => "\xC2\xBF",
                    'isin;' => "\xE2\x88\x88",
                    'Iuml' => "\xC3\x8F",
                    'iuml' => "\xC3\xAF",
                    'Iuml;' => "\xC3\x8F",
                    'iuml;' => "\xC3\xAF",
                    'Kappa;' => "\xCE\x9A",
                    'kappa;' => "\xCE\xBA",
                    'Lambda;' => "\xCE\x9B",
                    'lambda;' => "\xCE\xBB",
                    'lang;' => "\xE3\x80\x88",
                    'laquo' => "\xC2\xAB",
                    'laquo;' => "\xC2\xAB",
                    'lArr;' => "\xE2\x87\x90",
                    'larr;' => "\xE2\x86\x90",
                    'lceil;' => "\xE2\x8C\x88",
                    'ldquo;' => "\xE2\x80\x9C",
                    'le;' => "\xE2\x89\xA4",
                    'lfloor;' => "\xE2\x8C\x8A",
                    'lowast;' => "\xE2\x88\x97",
                    'loz;' => "\xE2\x97\x8A",
                    'lrm;' => "\xE2\x80\x8E",
                    'lsaquo;' => "\xE2\x80\xB9",
                    'lsquo;' => "\xE2\x80\x98",
                    'LT' => "\x3C",
                    'lt' => "\x3C",
                    'LT;' => "\x3C",
                    'lt;' => "\x3C",
                    'macr' => "\xC2\xAF",
                    'macr;' => "\xC2\xAF",
                    'mdash;' => "\xE2\x80\x94",
                    'micro' => "\xC2\xB5",
                    'micro;' => "\xC2\xB5",
                    'middot' => "\xC2\xB7",
                    'middot;' => "\xC2\xB7",
                    'minus;' => "\xE2\x88\x92",
                    'Mu;' => "\xCE\x9C",
                    'mu;' => "\xCE\xBC",
                    'nabla;' => "\xE2\x88\x87",
                    'nbsp' => "\xC2\xA0",
                    'nbsp;' => "\xC2\xA0",
                    'ndash;' => "\xE2\x80\x93",
                    'ne;' => "\xE2\x89\xA0",
                    'ni;' => "\xE2\x88\x8B",
                    'not' => "\xC2\xAC",
                    'not;' => "\xC2\xAC",
                    'notin;' => "\xE2\x88\x89",
                    'nsub;' => "\xE2\x8A\x84",
                    'Ntilde' => "\xC3\x91",
                    'ntilde' => "\xC3\xB1",
                    'Ntilde;' => "\xC3\x91",
                    'ntilde;' => "\xC3\xB1",
                    'Nu;' => "\xCE\x9D",
                    'nu;' => "\xCE\xBD",
                    'Oacute' => "\xC3\x93",
                    'oacute' => "\xC3\xB3",
                    'Oacute;' => "\xC3\x93",
                    'oacute;' => "\xC3\xB3",
                    'Ocirc' => "\xC3\x94",
                    'ocirc' => "\xC3\xB4",
                    'Ocirc;' => "\xC3\x94",
                    'ocirc;' => "\xC3\xB4",
                    'OElig;' => "\xC5\x92",
                    'oelig;' => "\xC5\x93",
                    'Ograve' => "\xC3\x92",
                    'ograve' => "\xC3\xB2",
                    'Ograve;' => "\xC3\x92",
                    'ograve;' => "\xC3\xB2",
                    'oline;' => "\xE2\x80\xBE",
                    'Omega;' => "\xCE\xA9",
                    'omega;' => "\xCF\x89",
                    'Omicron;' => "\xCE\x9F",
                    'omicron;' => "\xCE\xBF",
                    'oplus;' => "\xE2\x8A\x95",
                    'or;' => "\xE2\x88\xA8",
                    'ordf' => "\xC2\xAA",
                    'ordf;' => "\xC2\xAA",
                    'ordm' => "\xC2\xBA",
                    'ordm;' => "\xC2\xBA",
                    'Oslash' => "\xC3\x98",
                    'oslash' => "\xC3\xB8",
                    'Oslash;' => "\xC3\x98",
                    'oslash;' => "\xC3\xB8",
                    'Otilde' => "\xC3\x95",
                    'otilde' => "\xC3\xB5",
                    'Otilde;' => "\xC3\x95",
                    'otilde;' => "\xC3\xB5",
                    'otimes;' => "\xE2\x8A\x97",
                    'Ouml' => "\xC3\x96",
                    'ouml' => "\xC3\xB6",
                    'Ouml;' => "\xC3\x96",
                    'ouml;' => "\xC3\xB6",
                    'para' => "\xC2\xB6",
                    'para;' => "\xC2\xB6",
                    'part;' => "\xE2\x88\x82",
                    'permil;' => "\xE2\x80\xB0",
                    'perp;' => "\xE2\x8A\xA5",
                    'Phi;' => "\xCE\xA6",
                    'phi;' => "\xCF\x86",
                    'Pi;' => "\xCE\xA0",
                    'pi;' => "\xCF\x80",
                    'piv;' => "\xCF\x96",
                    'plusmn' => "\xC2\xB1",
                    'plusmn;' => "\xC2\xB1",
                    'pound' => "\xC2\xA3",
                    'pound;' => "\xC2\xA3",
                    'Prime;' => "\xE2\x80\xB3",
                    'prime;' => "\xE2\x80\xB2",
                    'prod;' => "\xE2\x88\x8F",
                    'prop;' => "\xE2\x88\x9D",
                    'Psi;' => "\xCE\xA8",
                    'psi;' => "\xCF\x88",
                    'QUOT' => "\x22",
                    'quot' => "\x22",
                    'QUOT;' => "\x22",
                    'quot;' => "\x22",
                    'radic;' => "\xE2\x88\x9A",
                    'rang;' => "\xE3\x80\x89",
                    'raquo' => "\xC2\xBB",
                    'raquo;' => "\xC2\xBB",
                    'rArr;' => "\xE2\x87\x92",
                    'rarr;' => "\xE2\x86\x92",
                    'rceil;' => "\xE2\x8C\x89",
                    'rdquo;' => "\xE2\x80\x9D",
                    'real;' => "\xE2\x84\x9C",
                    'REG' => "\xC2\xAE",
                    'reg' => "\xC2\xAE",
                    'REG;' => "\xC2\xAE",
                    'reg;' => "\xC2\xAE",
                    'rfloor;' => "\xE2\x8C\x8B",
                    'Rho;' => "\xCE\xA1",
                    'rho;' => "\xCF\x81",
                    'rlm;' => "\xE2\x80\x8F",
                    'rsaquo;' => "\xE2\x80\xBA",
                    'rsquo;' => "\xE2\x80\x99",
                    'sbquo;' => "\xE2\x80\x9A",
                    'Scaron;' => "\xC5\xA0",
                    'scaron;' => "\xC5\xA1",
                    'sdot;' => "\xE2\x8B\x85",
                    'sect' => "\xC2\xA7",
                    'sect;' => "\xC2\xA7",
                    'shy' => "\xC2\xAD",
                    'shy;' => "\xC2\xAD",
                    'Sigma;' => "\xCE\xA3",
                    'sigma;' => "\xCF\x83",
                    'sigmaf;' => "\xCF\x82",
                    'sim;' => "\xE2\x88\xBC",
                    'spades;' => "\xE2\x99\xA0",
                    'sub;' => "\xE2\x8A\x82",
                    'sube;' => "\xE2\x8A\x86",
                    'sum;' => "\xE2\x88\x91",
                    'sup;' => "\xE2\x8A\x83",
                    'sup1' => "\xC2\xB9",
                    'sup1;' => "\xC2\xB9",
                    'sup2' => "\xC2\xB2",
                    'sup2;' => "\xC2\xB2",
                    'sup3' => "\xC2\xB3",
                    'sup3;' => "\xC2\xB3",
                    'supe;' => "\xE2\x8A\x87",
                    'szlig' => "\xC3\x9F",
                    'szlig;' => "\xC3\x9F",
                    'Tau;' => "\xCE\xA4",
                    'tau;' => "\xCF\x84",
                    'there4;' => "\xE2\x88\xB4",
                    'Theta;' => "\xCE\x98",
                    'theta;' => "\xCE\xB8",
                    'thetasym;' => "\xCF\x91",
                    'thinsp;' => "\xE2\x80\x89",
                    'THORN' => "\xC3\x9E",
                    'thorn' => "\xC3\xBE",
                    'THORN;' => "\xC3\x9E",
                    'thorn;' => "\xC3\xBE",
                    'tilde;' => "\xCB\x9C",
                    'times' => "\xC3\x97",
                    'times;' => "\xC3\x97",
                    'TRADE;' => "\xE2\x84\xA2",
                    'trade;' => "\xE2\x84\xA2",
                    'Uacute' => "\xC3\x9A",
                    'uacute' => "\xC3\xBA",
                    'Uacute;' => "\xC3\x9A",
                    'uacute;' => "\xC3\xBA",
                    'uArr;' => "\xE2\x87\x91",
                    'uarr;' => "\xE2\x86\x91",
                    'Ucirc' => "\xC3\x9B",
                    'ucirc' => "\xC3\xBB",
                    'Ucirc;' => "\xC3\x9B",
                    'ucirc;' => "\xC3\xBB",
                    'Ugrave' => "\xC3\x99",
                    'ugrave' => "\xC3\xB9",
                    'Ugrave;' => "\xC3\x99",
                    'ugrave;' => "\xC3\xB9",
                    'uml' => "\xC2\xA8",
                    'uml;' => "\xC2\xA8",
                    'upsih;' => "\xCF\x92",
                    'Upsilon;' => "\xCE\xA5",
                    'upsilon;' => "\xCF\x85",
                    'Uuml' => "\xC3\x9C",
                    'uuml' => "\xC3\xBC",
                    'Uuml;' => "\xC3\x9C",
                    'uuml;' => "\xC3\xBC",
                    'weierp;' => "\xE2\x84\x98",
                    'Xi;' => "\xCE\x9E",
                    'xi;' => "\xCE\xBE",
                    'Yacute' => "\xC3\x9D",
                    'yacute' => "\xC3\xBD",
                    'Yacute;' => "\xC3\x9D",
                    'yacute;' => "\xC3\xBD",
                    'yen' => "\xC2\xA5",
                    'yen;' => "\xC2\xA5",
                    'yuml' => "\xC3\xBF",
                    'Yuml;' => "\xC5\xB8",
                    'yuml;' => "\xC3\xBF",
                    'Zeta;' => "\xCE\x96",
                    'zeta;' => "\xCE\xB6",
                    'zwj;' => "\xE2\x80\x8D",
                    'zwnj;' => "\xE2\x80\x8C"
                ];

                for ($i = 0, $match = null; $i < 9 && $this->consume() !== false; $i++) {
                    // Cast for PHPStan on PHP < 8.0: We consumed as per the loop condition,
                    // so `$this->consumed` is non-empty and the substr offset is valid.
                    $consumed = (string) substr($this->consumed, 1);
                    if (isset($entities[$consumed])) {
                        $match = $consumed;
                    }
                }

                if ($match !== null) {
                    $this->data = substr_replace($this->data, $entities[$match], $this->position - strlen($consumed) - 1, strlen($match) + 1);
                    $this->position += strlen($entities[$match]) - strlen($consumed) - 1;
                }
                break;
        }
    }
}