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Current File : /home/u993272038/domains/clubipr.com/public_html/wp-includes/SimplePie/src/Misc.php
<?php

/**
 * SimplePie
 *
 * A PHP-Based RSS and Atom Feed Framework.
 * Takes the hard work out of managing a complete RSS/Atom solution.
 *
 * Copyright (c) 2004-2022, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are
 * permitted provided that the following conditions are met:
 *
 * 	* Redistributions of source code must retain the above copyright notice, this list of
 * 	  conditions and the following disclaimer.
 *
 * 	* Redistributions in binary form must reproduce the above copyright notice, this list
 * 	  of conditions and the following disclaimer in the documentation and/or other materials
 * 	  provided with the distribution.
 *
 * 	* Neither the name of the SimplePie Team nor the names of its contributors may be used
 * 	  to endorse or promote products derived from this software without specific prior
 * 	  written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
 * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * @package SimplePie
 * @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue
 * @author Ryan Parman
 * @author Sam Sneddon
 * @author Ryan McCue
 * @link http://simplepie.org/ SimplePie
 * @license http://www.opensource.org/licenses/bsd-license.php BSD License
 */

namespace SimplePie;

use SimplePie\XML\Declaration\Parser;

/**
 * Miscellaneous utilities
 *
 * @package SimplePie
 */
class Misc
{
    private static $SIMPLEPIE_BUILD = null;

    public static function time_hms($seconds)
    {
        $time = '';

        $hours = floor($seconds / 3600);
        $remainder = $seconds % 3600;
        if ($hours > 0) {
            $time .= $hours.':';
        }

        $minutes = floor($remainder / 60);
        $seconds = $remainder % 60;
        if ($minutes < 10 && $hours > 0) {
            $minutes = '0' . $minutes;
        }
        if ($seconds < 10) {
            $seconds = '0' . $seconds;
        }

        $time .= $minutes.':';
        $time .= $seconds;

        return $time;
    }

    public static function absolutize_url($relative, $base)
    {
        $iri = \SimplePie\IRI::absolutize(new \SimplePie\IRI($base), $relative);
        if ($iri === false) {
            return false;
        }
        return $iri->get_uri();
    }

    /**
     * Get a HTML/XML element from a HTML string
     *
     * @deprecated since SimplePie 1.3, use DOMDocument instead (parsing HTML with regex is bad!)
     * @param string $realname Element name (including namespace prefix if applicable)
     * @param string $string HTML document
     * @return array
     */
    public static function get_element($realname, $string)
    {
        // trigger_error(sprintf('Using method "' . __METHOD__ . '" is deprecated since SimplePie 1.3, use "DOMDocument" instead.'), \E_USER_DEPRECATED);

        $return = [];
        $name = preg_quote($realname, '/');
        if (preg_match_all("/<($name)" . \SimplePie\SimplePie::PCRE_HTML_ATTRIBUTE . "(>(.*)<\/$name>|(\/)?>)/siU", $string, $matches, PREG_SET_ORDER | PREG_OFFSET_CAPTURE)) {
            for ($i = 0, $total_matches = count($matches); $i < $total_matches; $i++) {
                $return[$i]['tag'] = $realname;
                $return[$i]['full'] = $matches[$i][0][0];
                $return[$i]['offset'] = $matches[$i][0][1];
                if (strlen($matches[$i][3][0]) <= 2) {
                    $return[$i]['self_closing'] = true;
                } else {
                    $return[$i]['self_closing'] = false;
                    $return[$i]['content'] = $matches[$i][4][0];
                }
                $return[$i]['attribs'] = [];
                if (isset($matches[$i][2][0]) && preg_match_all('/[\x09\x0A\x0B\x0C\x0D\x20]+([^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3E][^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3D\x3E]*)(?:[\x09\x0A\x0B\x0C\x0D\x20]*=[\x09\x0A\x0B\x0C\x0D\x20]*(?:"([^"]*)"|\'([^\']*)\'|([^\x09\x0A\x0B\x0C\x0D\x20\x22\x27\x3E][^\x09\x0A\x0B\x0C\x0D\x20\x3E]*)?))?/', ' ' . $matches[$i][2][0] . ' ', $attribs, PREG_SET_ORDER)) {
                    for ($j = 0, $total_attribs = count($attribs); $j < $total_attribs; $j++) {
                        if (count($attribs[$j]) === 2) {
                            $attribs[$j][2] = $attribs[$j][1];
                        }
                        $return[$i]['attribs'][strtolower($attribs[$j][1])]['data'] = Misc::entities_decode(end($attribs[$j]));
                    }
                }
            }
        }
        return $return;
    }

    public static function element_implode($element)
    {
        $full = "<$element[tag]";
        foreach ($element['attribs'] as $key => $value) {
            $key = strtolower($key);
            $full .= " $key=\"" . htmlspecialchars($value['data'], ENT_COMPAT, 'UTF-8') . '"';
        }
        if ($element['self_closing']) {
            $full .= ' />';
        } else {
            $full .= ">$element[content]</$element[tag]>";
        }
        return $full;
    }

    public static function error($message, $level, $file, $line)
    {
        if ((error_reporting() & $level) > 0) {
            switch ($level) {
                case E_USER_ERROR:
                    $note = 'PHP Error';
                    break;
                case E_USER_WARNING:
                    $note = 'PHP Warning';
                    break;
                case E_USER_NOTICE:
                    $note = 'PHP Notice';
                    break;
                default:
                    $note = 'Unknown Error';
                    break;
            }

            $log_error = true;
            if (!function_exists('error_log')) {
                $log_error = false;
            }

            $log_file = @ini_get('error_log');
            if (!empty($log_file) && ('syslog' !== $log_file) && !@is_writable($log_file)) {
                $log_error = false;
            }

            if ($log_error) {
                @error_log("$note: $message in $file on line $line", 0);
            }
        }

        return $message;
    }

    public static function fix_protocol($url, $http = 1)
    {
        $url = Misc::normalize_url($url);
        $parsed = Misc::parse_url($url);
        if ($parsed['scheme'] !== '' && $parsed['scheme'] !== 'http' && $parsed['scheme'] !== 'https') {
            return Misc::fix_protocol(Misc::compress_parse_url('http', $parsed['authority'], $parsed['path'], $parsed['query'], $parsed['fragment']), $http);
        }

        if ($parsed['scheme'] === '' && $parsed['authority'] === '' && !file_exists($url)) {
            return Misc::fix_protocol(Misc::compress_parse_url('http', $parsed['path'], '', $parsed['query'], $parsed['fragment']), $http);
        }

        if ($http === 2 && $parsed['scheme'] !== '') {
            return "feed:$url";
        } elseif ($http === 3 && strtolower($parsed['scheme']) === 'http') {
            return substr_replace($url, 'podcast', 0, 4);
        } elseif ($http === 4 && strtolower($parsed['scheme']) === 'http') {
            return substr_replace($url, 'itpc', 0, 4);
        }

        return $url;
    }

    /**
     * @deprecated since SimplePie 1.8.0, use PHP native array_replace_recursive() instead.
     */
    public static function array_merge_recursive($array1, $array2)
    {
        foreach ($array2 as $key => $value) {
            if (is_array($value)) {
                $array1[$key] = Misc::array_merge_recursive($array1[$key], $value);
            } else {
                $array1[$key] = $value;
            }
        }

        return $array1;
    }

    public static function parse_url($url)
    {
        $iri = new \SimplePie\IRI($url);
        return [
            'scheme' => (string) $iri->scheme,
            'authority' => (string) $iri->authority,
            'path' => (string) $iri->path,
            'query' => (string) $iri->query,
            'fragment' => (string) $iri->fragment
        ];
    }

    public static function compress_parse_url($scheme = '', $authority = '', $path = '', $query = '', $fragment = '')
    {
        $iri = new \SimplePie\IRI('');
        $iri->scheme = $scheme;
        $iri->authority = $authority;
        $iri->path = $path;
        $iri->query = $query;
        $iri->fragment = $fragment;
        return $iri->get_uri();
    }

    public static function normalize_url($url)
    {
        $iri = new \SimplePie\IRI($url);
        return $iri->get_uri();
    }

    public static function percent_encoding_normalization($match)
    {
        $integer = hexdec($match[1]);
        if ($integer >= 0x41 && $integer <= 0x5A || $integer >= 0x61 && $integer <= 0x7A || $integer >= 0x30 && $integer <= 0x39 || $integer === 0x2D || $integer === 0x2E || $integer === 0x5F || $integer === 0x7E) {
            return chr($integer);
        }

        return strtoupper($match[0]);
    }

    /**
     * Converts a Windows-1252 encoded string to a UTF-8 encoded string
     *
     * @static
     * @param string $string Windows-1252 encoded string
     * @return string UTF-8 encoded string
     */
    public static function windows_1252_to_utf8($string)
    {
        static $convert_table = ["\x80" => "\xE2\x82\xAC", "\x81" => "\xEF\xBF\xBD", "\x82" => "\xE2\x80\x9A", "\x83" => "\xC6\x92", "\x84" => "\xE2\x80\x9E", "\x85" => "\xE2\x80\xA6", "\x86" => "\xE2\x80\xA0", "\x87" => "\xE2\x80\xA1", "\x88" => "\xCB\x86", "\x89" => "\xE2\x80\xB0", "\x8A" => "\xC5\xA0", "\x8B" => "\xE2\x80\xB9", "\x8C" => "\xC5\x92", "\x8D" => "\xEF\xBF\xBD", "\x8E" => "\xC5\xBD", "\x8F" => "\xEF\xBF\xBD", "\x90" => "\xEF\xBF\xBD", "\x91" => "\xE2\x80\x98", "\x92" => "\xE2\x80\x99", "\x93" => "\xE2\x80\x9C", "\x94" => "\xE2\x80\x9D", "\x95" => "\xE2\x80\xA2", "\x96" => "\xE2\x80\x93", "\x97" => "\xE2\x80\x94", "\x98" => "\xCB\x9C", "\x99" => "\xE2\x84\xA2", "\x9A" => "\xC5\xA1", "\x9B" => "\xE2\x80\xBA", "\x9C" => "\xC5\x93", "\x9D" => "\xEF\xBF\xBD", "\x9E" => "\xC5\xBE", "\x9F" => "\xC5\xB8", "\xA0" => "\xC2\xA0", "\xA1" => "\xC2\xA1", "\xA2" => "\xC2\xA2", "\xA3" => "\xC2\xA3", "\xA4" => "\xC2\xA4", "\xA5" => "\xC2\xA5", "\xA6" => "\xC2\xA6", "\xA7" => "\xC2\xA7", "\xA8" => "\xC2\xA8", "\xA9" => "\xC2\xA9", "\xAA" => "\xC2\xAA", "\xAB" => "\xC2\xAB", "\xAC" => "\xC2\xAC", "\xAD" => "\xC2\xAD", "\xAE" => "\xC2\xAE", "\xAF" => "\xC2\xAF", "\xB0" => "\xC2\xB0", "\xB1" => "\xC2\xB1", "\xB2" => "\xC2\xB2", "\xB3" => "\xC2\xB3", "\xB4" => "\xC2\xB4", "\xB5" => "\xC2\xB5", "\xB6" => "\xC2\xB6", "\xB7" => "\xC2\xB7", "\xB8" => "\xC2\xB8", "\xB9" => "\xC2\xB9", "\xBA" => "\xC2\xBA", "\xBB" => "\xC2\xBB", "\xBC" => "\xC2\xBC", "\xBD" => "\xC2\xBD", "\xBE" => "\xC2\xBE", "\xBF" => "\xC2\xBF", "\xC0" => "\xC3\x80", "\xC1" => "\xC3\x81", "\xC2" => "\xC3\x82", "\xC3" => "\xC3\x83", "\xC4" => "\xC3\x84", "\xC5" => "\xC3\x85", "\xC6" => "\xC3\x86", "\xC7" => "\xC3\x87", "\xC8" => "\xC3\x88", "\xC9" => "\xC3\x89", "\xCA" => "\xC3\x8A", "\xCB" => "\xC3\x8B", "\xCC" => "\xC3\x8C", "\xCD" => "\xC3\x8D", "\xCE" => "\xC3\x8E", "\xCF" => "\xC3\x8F", "\xD0" => "\xC3\x90", "\xD1" => "\xC3\x91", "\xD2" => "\xC3\x92", "\xD3" => "\xC3\x93", "\xD4" => "\xC3\x94", "\xD5" => "\xC3\x95", "\xD6" => "\xC3\x96", "\xD7" => "\xC3\x97", "\xD8" => "\xC3\x98", "\xD9" => "\xC3\x99", "\xDA" => "\xC3\x9A", "\xDB" => "\xC3\x9B", "\xDC" => "\xC3\x9C", "\xDD" => "\xC3\x9D", "\xDE" => "\xC3\x9E", "\xDF" => "\xC3\x9F", "\xE0" => "\xC3\xA0", "\xE1" => "\xC3\xA1", "\xE2" => "\xC3\xA2", "\xE3" => "\xC3\xA3", "\xE4" => "\xC3\xA4", "\xE5" => "\xC3\xA5", "\xE6" => "\xC3\xA6", "\xE7" => "\xC3\xA7", "\xE8" => "\xC3\xA8", "\xE9" => "\xC3\xA9", "\xEA" => "\xC3\xAA", "\xEB" => "\xC3\xAB", "\xEC" => "\xC3\xAC", "\xED" => "\xC3\xAD", "\xEE" => "\xC3\xAE", "\xEF" => "\xC3\xAF", "\xF0" => "\xC3\xB0", "\xF1" => "\xC3\xB1", "\xF2" => "\xC3\xB2", "\xF3" => "\xC3\xB3", "\xF4" => "\xC3\xB4", "\xF5" => "\xC3\xB5", "\xF6" => "\xC3\xB6", "\xF7" => "\xC3\xB7", "\xF8" => "\xC3\xB8", "\xF9" => "\xC3\xB9", "\xFA" => "\xC3\xBA", "\xFB" => "\xC3\xBB", "\xFC" => "\xC3\xBC", "\xFD" => "\xC3\xBD", "\xFE" => "\xC3\xBE", "\xFF" => "\xC3\xBF"];

        return strtr($string, $convert_table);
    }

    /**
     * Change a string from one encoding to another
     *
     * @param string $data Raw data in $input encoding
     * @param string $input Encoding of $data
     * @param string $output Encoding you want
     * @return string|boolean False if we can't convert it
     */
    public static function change_encoding($data, $input, $output)
    {
        $input = Misc::encoding($input);
        $output = Misc::encoding($output);

        // We fail to fail on non US-ASCII bytes
        if ($input === 'US-ASCII') {
            static $non_ascii_octects = '';
            if (!$non_ascii_octects) {
                for ($i = 0x80; $i <= 0xFF; $i++) {
                    $non_ascii_octects .= chr($i);
                }
            }
            $data = substr($data, 0, strcspn($data, $non_ascii_octects));
        }

        // This is first, as behaviour of this is completely predictable
        if ($input === 'windows-1252' && $output === 'UTF-8') {
            return Misc::windows_1252_to_utf8($data);
        }
        // This is second, as behaviour of this varies only with PHP version (the middle part of this expression checks the encoding is supported).
        elseif (function_exists('mb_convert_encoding') && ($return = Misc::change_encoding_mbstring($data, $input, $output))) {
            return $return;
        }
        // This is third, as behaviour of this varies with OS userland and PHP version
        elseif (function_exists('iconv') && ($return = Misc::change_encoding_iconv($data, $input, $output))) {
            return $return;
        }
        // This is last, as behaviour of this varies with OS userland and PHP version
        elseif (class_exists('\UConverter') && ($return = Misc::change_encoding_uconverter($data, $input, $output))) {
            return $return;
        }

        // If we can't do anything, just fail
        return false;
    }

    protected static function change_encoding_mbstring($data, $input, $output)
    {
        if ($input === 'windows-949') {
            $input = 'EUC-KR';
        }
        if ($output === 'windows-949') {
            $output = 'EUC-KR';
        }
        if ($input === 'Windows-31J') {
            $input = 'SJIS';
        }
        if ($output === 'Windows-31J') {
            $output = 'SJIS';
        }

        // Check that the encoding is supported
        if (!in_array($input, mb_list_encodings())) {
            return false;
        }

        if (@mb_convert_encoding("\x80", 'UTF-16BE', $input) === "\x00\x80") {
            return false;
        }

        // Let's do some conversion
        if ($return = @mb_convert_encoding($data, $output, $input)) {
            return $return;
        }

        return false;
    }

    protected static function change_encoding_iconv($data, $input, $output)
    {
        return @iconv($input, $output, $data);
    }

    /**
     * @param string $data
     * @param string $input
     * @param string $output
     * @return string|false
     */
    protected static function change_encoding_uconverter($data, $input, $output)
    {
        return @\UConverter::transcode($data, $output, $input);
    }

    /**
     * Normalize an encoding name
     *
     * This is automatically generated by create.php
     *
     * To generate it, run `php create.php` on the command line, and copy the
     * output to replace this function.
     *
     * @param string $charset Character set to standardise
     * @return string Standardised name
     */
    public static function encoding($charset)
    {
        // Normalization from UTS #22
        switch (strtolower(preg_replace('/(?:[^a-zA-Z0-9]+|([^0-9])0+)/', '\1', $charset))) {
            case 'adobestandardencoding':
            case 'csadobestandardencoding':
                return 'Adobe-Standard-Encoding';

            case 'adobesymbolencoding':
            case 'cshppsmath':
                return 'Adobe-Symbol-Encoding';

            case 'ami1251':
            case 'amiga1251':
                return 'Amiga-1251';

            case 'ansix31101983':
            case 'csat5001983':
            case 'csiso99naplps':
            case 'isoir99':
            case 'naplps':
                return 'ANSI_X3.110-1983';

            case 'arabic7':
            case 'asmo449':
            case 'csiso89asmo449':
            case 'iso9036':
            case 'isoir89':
                return 'ASMO_449';

            case 'big5':
            case 'csbig5':
                return 'Big5';

            case 'big5hkscs':
                return 'Big5-HKSCS';

            case 'bocu1':
            case 'csbocu1':
                return 'BOCU-1';

            case 'brf':
            case 'csbrf':
                return 'BRF';

            case 'bs4730':
            case 'csiso4unitedkingdom':
            case 'gb':
            case 'iso646gb':
            case 'isoir4':
            case 'uk':
                return 'BS_4730';

            case 'bsviewdata':
            case 'csiso47bsviewdata':
            case 'isoir47':
                return 'BS_viewdata';

            case 'cesu8':
            case 'cscesu8':
                return 'CESU-8';

            case 'ca':
            case 'csa71':
            case 'csaz243419851':
            case 'csiso121canadian1':
            case 'iso646ca':
            case 'isoir121':
                return 'CSA_Z243.4-1985-1';

            case 'csa72':
            case 'csaz243419852':
            case 'csiso122canadian2':
            case 'iso646ca2':
            case 'isoir122':
                return 'CSA_Z243.4-1985-2';

            case 'csaz24341985gr':
            case 'csiso123csaz24341985gr':
            case 'isoir123':
                return 'CSA_Z243.4-1985-gr';

            case 'csiso139csn369103':
            case 'csn369103':
            case 'isoir139':
                return 'CSN_369103';

            case 'csdecmcs':
            case 'dec':
            case 'decmcs':
                return 'DEC-MCS';

            case 'csiso21german':
            case 'de':
            case 'din66003':
            case 'iso646de':
            case 'isoir21':
                return 'DIN_66003';

            case 'csdkus':
            case 'dkus':
                return 'dk-us';

            case 'csiso646danish':
            case 'dk':
            case 'ds2089':
            case 'iso646dk':
                return 'DS_2089';

            case 'csibmebcdicatde':
            case 'ebcdicatde':
                return 'EBCDIC-AT-DE';

            case 'csebcdicatdea':
            case 'ebcdicatdea':
                return 'EBCDIC-AT-DE-A';

            case 'csebcdiccafr':
            case 'ebcdiccafr':
                return 'EBCDIC-CA-FR';

            case 'csebcdicdkno':
            case 'ebcdicdkno':
                return 'EBCDIC-DK-NO';

            case 'csebcdicdknoa':
            case 'ebcdicdknoa':
                return 'EBCDIC-DK-NO-A';

            case 'csebcdices':
            case 'ebcdices':
                return 'EBCDIC-ES';

            case 'csebcdicesa':
            case 'ebcdicesa':
                return 'EBCDIC-ES-A';

            case 'csebcdicess':
            case 'ebcdicess':
                return 'EBCDIC-ES-S';

            case 'csebcdicfise':
            case 'ebcdicfise':
                return 'EBCDIC-FI-SE';

            case 'csebcdicfisea':
            case 'ebcdicfisea':
                return 'EBCDIC-FI-SE-A';

            case 'csebcdicfr':
            case 'ebcdicfr':
                return 'EBCDIC-FR';

            case 'csebcdicit':
            case 'ebcdicit':
                return 'EBCDIC-IT';

            case 'csebcdicpt':
            case 'ebcdicpt':
                return 'EBCDIC-PT';

            case 'csebcdicuk':
            case 'ebcdicuk':
                return 'EBCDIC-UK';

            case 'csebcdicus':
            case 'ebcdicus':
                return 'EBCDIC-US';

            case 'csiso111ecmacyrillic':
            case 'ecmacyrillic':
            case 'isoir111':
            case 'koi8e':
                return 'ECMA-cyrillic';

            case 'csiso17spanish':
            case 'es':
            case 'iso646es':
            case 'isoir17':
                return 'ES';

            case 'csiso85spanish2':
            case 'es2':
            case 'iso646es2':
            case 'isoir85':
                return 'ES2';

            case 'cseucpkdfmtjapanese':
            case 'eucjp':
            case 'extendedunixcodepackedformatforjapanese':
                return 'EUC-JP';

            case 'cseucfixwidjapanese':
            case 'extendedunixcodefixedwidthforjapanese':
                return 'Extended_UNIX_Code_Fixed_Width_for_Japanese';

            case 'gb18030':
                return 'GB18030';

            case 'chinese':
            case 'cp936':
            case 'csgb2312':
            case 'csiso58gb231280':
            case 'gb2312':
            case 'gb231280':
            case 'gbk':
            case 'isoir58':
            case 'ms936':
            case 'windows936':
                return 'GBK';

            case 'cn':
            case 'csiso57gb1988':
            case 'gb198880':
            case 'iso646cn':
            case 'isoir57':
                return 'GB_1988-80';

            case 'csiso153gost1976874':
            case 'gost1976874':
            case 'isoir153':
            case 'stsev35888':
                return 'GOST_19768-74';

            case 'csiso150':
            case 'csiso150greekccitt':
            case 'greekccitt':
            case 'isoir150':
                return 'greek-ccitt';

            case 'csiso88greek7':
            case 'greek7':
            case 'isoir88':
                return 'greek7';

            case 'csiso18greek7old':
            case 'greek7old':
            case 'isoir18':
                return 'greek7-old';

            case 'cshpdesktop':
            case 'hpdesktop':
                return 'HP-DeskTop';

            case 'cshplegal':
            case 'hplegal':
                return 'HP-Legal';

            case 'cshpmath8':
            case 'hpmath8':
                return 'HP-Math8';

            case 'cshppifont':
            case 'hppifont':
                return 'HP-Pi-font';

            case 'cshproman8':
            case 'hproman8':
            case 'r8':
            case 'roman8':
                return 'hp-roman8';

            case 'hzgb2312':
                return 'HZ-GB-2312';

            case 'csibmsymbols':
            case 'ibmsymbols':
                return 'IBM-Symbols';

            case 'csibmthai':
            case 'ibmthai':
                return 'IBM-Thai';

            case 'cp37':
            case 'csibm37':
            case 'ebcdiccpca':
            case 'ebcdiccpnl':
            case 'ebcdiccpus':
            case 'ebcdiccpwt':
            case 'ibm37':
                return 'IBM037';

            case 'cp38':
            case 'csibm38':
            case 'ebcdicint':
            case 'ibm38':
                return 'IBM038';

            case 'cp273':
            case 'csibm273':
            case 'ibm273':
                return 'IBM273';

            case 'cp274':
            case 'csibm274':
            case 'ebcdicbe':
            case 'ibm274':
                return 'IBM274';

            case 'cp275':
            case 'csibm275':
            case 'ebcdicbr':
            case 'ibm275':
                return 'IBM275';

            case 'csibm277':
            case 'ebcdiccpdk':
            case 'ebcdiccpno':
            case 'ibm277':
                return 'IBM277';

            case 'cp278':
            case 'csibm278':
            case 'ebcdiccpfi':
            case 'ebcdiccpse':
            case 'ibm278':
                return 'IBM278';

            case 'cp280':
            case 'csibm280':
            case 'ebcdiccpit':
            case 'ibm280':
                return 'IBM280';

            case 'cp281':
            case 'csibm281':
            case 'ebcdicjpe':
            case 'ibm281':
                return 'IBM281';

            case 'cp284':
            case 'csibm284':
            case 'ebcdiccpes':
            case 'ibm284':
                return 'IBM284';

            case 'cp285':
            case 'csibm285':
            case 'ebcdiccpgb':
            case 'ibm285':
                return 'IBM285';

            case 'cp290':
            case 'csibm290':
            case 'ebcdicjpkana':
            case 'ibm290':
                return 'IBM290';

            case 'cp297':
            case 'csibm297':
            case 'ebcdiccpfr':
            case 'ibm297':
                return 'IBM297';

            case 'cp420':
            case 'csibm420':
            case 'ebcdiccpar1':
            case 'ibm420':
                return 'IBM420';

            case 'cp423':
            case 'csibm423':
            case 'ebcdiccpgr':
            case 'ibm423':
                return 'IBM423';

            case 'cp424':
            case 'csibm424':
            case 'ebcdiccphe':
            case 'ibm424':
                return 'IBM424';

            case '437':
            case 'cp437':
            case 'cspc8codepage437':
            case 'ibm437':
                return 'IBM437';

            case 'cp500':
            case 'csibm500':
            case 'ebcdiccpbe':
            case 'ebcdiccpch':
            case 'ibm500':
                return 'IBM500';

            case 'cp775':
            case 'cspc775baltic':
            case 'ibm775':
                return 'IBM775';

            case '850':
            case 'cp850':
            case 'cspc850multilingual':
            case 'ibm850':
                return 'IBM850';

            case '851':
            case 'cp851':
            case 'csibm851':
            case 'ibm851':
                return 'IBM851';

            case '852':
            case 'cp852':
            case 'cspcp852':
            case 'ibm852':
                return 'IBM852';

            case '855':
            case 'cp855':
            case 'csibm855':
            case 'ibm855':
                return 'IBM855';

            case '857':
            case 'cp857':
            case 'csibm857':
            case 'ibm857':
                return 'IBM857';

            case 'ccsid858':
            case 'cp858':
            case 'ibm858':
            case 'pcmultilingual850euro':
                return 'IBM00858';

            case '860':
            case 'cp860':
            case 'csibm860':
            case 'ibm860':
                return 'IBM860';

            case '861':
            case 'cp861':
            case 'cpis':
            case 'csibm861':
            case 'ibm861':
                return 'IBM861';

            case '862':
            case 'cp862':
            case 'cspc862latinhebrew':
            case 'ibm862':
                return 'IBM862';

            case '863':
            case 'cp863':
            case 'csibm863':
            case 'ibm863':
                return 'IBM863';

            case 'cp864':
            case 'csibm864':
            case 'ibm864':
                return 'IBM864';

            case '865':
            case 'cp865':
            case 'csibm865':
            case 'ibm865':
                return 'IBM865';

            case '866':
            case 'cp866':
            case 'csibm866':
            case 'ibm866':
                return 'IBM866';

            case 'cp868':
            case 'cpar':
            case 'csibm868':
            case 'ibm868':
                return 'IBM868';

            case '869':
            case 'cp869':
            case 'cpgr':
            case 'csibm869':
            case 'ibm869':
                return 'IBM869';

            case 'cp870':
            case 'csibm870':
            case 'ebcdiccproece':
            case 'ebcdiccpyu':
            case 'ibm870':
                return 'IBM870';

            case 'cp871':
            case 'csibm871':
            case 'ebcdiccpis':
            case 'ibm871':
                return 'IBM871';

            case 'cp880':
            case 'csibm880':
            case 'ebcdiccyrillic':
            case 'ibm880':
                return 'IBM880';

            case 'cp891':
            case 'csibm891':
            case 'ibm891':
                return 'IBM891';

            case 'cp903':
            case 'csibm903':
            case 'ibm903':
                return 'IBM903';

            case '904':
            case 'cp904':
            case 'csibbm904':
            case 'ibm904':
                return 'IBM904';

            case 'cp905':
            case 'csibm905':
            case 'ebcdiccptr':
            case 'ibm905':
                return 'IBM905';

            case 'cp918':
            case 'csibm918':
            case 'ebcdiccpar2':
            case 'ibm918':
                return 'IBM918';

            case 'ccsid924':
            case 'cp924':
            case 'ebcdiclatin9euro':
            case 'ibm924':
                return 'IBM00924';

            case 'cp1026':
            case 'csibm1026':
            case 'ibm1026':
                return 'IBM1026';

            case 'ibm1047':
                return 'IBM1047';

            case 'ccsid1140':
            case 'cp1140':
            case 'ebcdicus37euro':
            case 'ibm1140':
                return 'IBM01140';

            case 'ccsid1141':
            case 'cp1141':
            case 'ebcdicde273euro':
            case 'ibm1141':
                return 'IBM01141';

            case 'ccsid1142':
            case 'cp1142':
            case 'ebcdicdk277euro':
            case 'ebcdicno277euro':
            case 'ibm1142':
                return 'IBM01142';

            case 'ccsid1143':
            case 'cp1143':
            case 'ebcdicfi278euro':
            case 'ebcdicse278euro':
            case 'ibm1143':
                return 'IBM01143';

            case 'ccsid1144':
            case 'cp1144':
            case 'ebcdicit280euro':
            case 'ibm1144':
                return 'IBM01144';

            case 'ccsid1145':
            case 'cp1145':
            case 'ebcdices284euro':
            case 'ibm1145':
                return 'IBM01145';

            case 'ccsid1146':
            case 'cp1146':
            case 'ebcdicgb285euro':
            case 'ibm1146':
                return 'IBM01146';

            case 'ccsid1147':
            case 'cp1147':
            case 'ebcdicfr297euro':
            case 'ibm1147':
                return 'IBM01147';

            case 'ccsid1148':
            case 'cp1148':
            case 'ebcdicinternational500euro':
            case 'ibm1148':
                return 'IBM01148';

            case 'ccsid1149':
            case 'cp1149':
            case 'ebcdicis871euro':
            case 'ibm1149':
                return 'IBM01149';

            case 'csiso143iecp271':
            case 'iecp271':
            case 'isoir143':
                return 'IEC_P27-1';

            case 'csiso49inis':
            case 'inis':
            case 'isoir49':
                return 'INIS';

            case 'csiso50inis8':
            case 'inis8':
            case 'isoir50':
                return 'INIS-8';

            case 'csiso51iniscyrillic':
            case 'iniscyrillic':
            case 'isoir51':
                return 'INIS-cyrillic';

            case 'csinvariant':
            case 'invariant':
                return 'INVARIANT';

            case 'iso2022cn':
                return 'ISO-2022-CN';

            case 'iso2022cnext':
                return 'ISO-2022-CN-EXT';

            case 'csiso2022jp':
            case 'iso2022jp':
                return 'ISO-2022-JP';

            case 'csiso2022jp2':
            case 'iso2022jp2':
                return 'ISO-2022-JP-2';

            case 'csiso2022kr':
            case 'iso2022kr':
                return 'ISO-2022-KR';

            case 'cswindows30latin1':
            case 'iso88591windows30latin1':
                return 'ISO-8859-1-Windows-3.0-Latin-1';

            case 'cswindows31latin1':
            case 'iso88591windows31latin1':
                return 'ISO-8859-1-Windows-3.1-Latin-1';

            case 'csisolatin2':
            case 'iso88592':
            case 'iso885921987':
            case 'isoir101':
            case 'l2':
            case 'latin2':
                return 'ISO-8859-2';

            case 'cswindows31latin2':
            case 'iso88592windowslatin2':
                return 'ISO-8859-2-Windows-Latin-2';

            case 'csisolatin3':
            case 'iso88593':
            case 'iso885931988':
            case 'isoir109':
            case 'l3':
            case 'latin3':
                return 'ISO-8859-3';

            case 'csisolatin4':
            case 'iso88594':
            case 'iso885941988':
            case 'isoir110':
            case 'l4':
            case 'latin4':
                return 'ISO-8859-4';

            case 'csisolatincyrillic':
            case 'cyrillic':
            case 'iso88595':
            case 'iso885951988':
            case 'isoir144':
                return 'ISO-8859-5';

            case 'arabic':
            case 'asmo708':
            case 'csisolatinarabic':
            case 'ecma114':
            case 'iso88596':
            case 'iso885961987':
            case 'isoir127':
                return 'ISO-8859-6';

            case 'csiso88596e':
            case 'iso88596e':
                return 'ISO-8859-6-E';

            case 'csiso88596i':
            case 'iso88596i':
                return 'ISO-8859-6-I';

            case 'csisolatingreek':
            case 'ecma118':
            case 'elot928':
            case 'greek':
            case 'greek8':
            case 'iso88597':
            case 'iso885971987':
            case 'isoir126':
                return 'ISO-8859-7';

            case 'csisolatinhebrew':
            case 'hebrew':
            case 'iso88598':
            case 'iso885981988':
            case 'isoir138':
                return 'ISO-8859-8';

            case 'csiso88598e':
            case 'iso88598e':
                return 'ISO-8859-8-E';

            case 'csiso88598i':
            case 'iso88598i':
                return 'ISO-8859-8-I';

            case 'cswindows31latin5':
            case 'iso88599windowslatin5':
                return 'ISO-8859-9-Windows-Latin-5';

            case 'csisolatin6':
            case 'iso885910':
            case 'iso8859101992':
            case 'isoir157':
            case 'l6':
            case 'latin6':
                return 'ISO-8859-10';

            case 'iso885913':
                return 'ISO-8859-13';

            case 'iso885914':
            case 'iso8859141998':
            case 'isoceltic':
            case 'isoir199':
            case 'l8':
            case 'latin8':
                return 'ISO-8859-14';

            case 'iso885915':
            case 'latin9':
                return 'ISO-8859-15';

            case 'iso885916':
            case 'iso8859162001':
            case 'isoir226':
            case 'l10':
            case 'latin10':
                return 'ISO-8859-16';

            case 'iso10646j1':
                return 'ISO-10646-J-1';

            case 'csunicode':
            case 'iso10646ucs2':
                return 'ISO-10646-UCS-2';

            case 'csucs4':
            case 'iso10646ucs4':
                return 'ISO-10646-UCS-4';

            case 'csunicodeascii':
            case 'iso10646ucsbasic':
                return 'ISO-10646-UCS-Basic';

            case 'csunicodelatin1':
            case 'iso10646':
            case 'iso10646unicodelatin1':
                return 'ISO-10646-Unicode-Latin1';

            case 'csiso10646utf1':
            case 'iso10646utf1':
                return 'ISO-10646-UTF-1';

            case 'csiso115481':
            case 'iso115481':
            case 'isotr115481':
                return 'ISO-11548-1';

            case 'csiso90':
            case 'isoir90':
                return 'iso-ir-90';

            case 'csunicodeibm1261':
            case 'isounicodeibm1261':
                return 'ISO-Unicode-IBM-1261';

            case 'csunicodeibm1264':
            case 'isounicodeibm1264':
                return 'ISO-Unicode-IBM-1264';

            case 'csunicodeibm1265':
            case 'isounicodeibm1265':
                return 'ISO-Unicode-IBM-1265';

            case 'csunicodeibm1268':
            case 'isounicodeibm1268':
                return 'ISO-Unicode-IBM-1268';

            case 'csunicodeibm1276':
            case 'isounicodeibm1276':
                return 'ISO-Unicode-IBM-1276';

            case 'csiso646basic1983':
            case 'iso646basic1983':
            case 'ref':
                return 'ISO_646.basic:1983';

            case 'csiso2intlrefversion':
            case 'irv':
            case 'iso646irv1983':
            case 'isoir2':
                return 'ISO_646.irv:1983';

            case 'csiso2033':
            case 'e13b':
            case 'iso20331983':
            case 'isoir98':
                return 'ISO_2033-1983';

            case 'csiso5427cyrillic':
            case 'iso5427':
            case 'isoir37':
                return 'ISO_5427';

            case 'iso5427cyrillic1981':
            case 'iso54271981':
            case 'isoir54':
                return 'ISO_5427:1981';

            case 'csiso5428greek':
            case 'iso54281980':
            case 'isoir55':
                return 'ISO_5428:1980';

            case 'csiso6937add':
            case 'iso6937225':
            case 'isoir152':
                return 'ISO_6937-2-25';

            case 'csisotextcomm':
            case 'iso69372add':
            case 'isoir142':
                return 'ISO_6937-2-add';

            case 'csiso8859supp':
            case 'iso8859supp':
            case 'isoir154':
            case 'latin125':
                return 'ISO_8859-supp';

            case 'csiso10367box':
            case 'iso10367box':
            case 'isoir155':
                return 'ISO_10367-box';

            case 'csiso15italian':
            case 'iso646it':
            case 'isoir15':
            case 'it':
                return 'IT';

            case 'csiso13jisc6220jp':
            case 'isoir13':
            case 'jisc62201969':
            case 'jisc62201969jp':
            case 'katakana':
            case 'x2017':
                return 'JIS_C6220-1969-jp';

            case 'csiso14jisc6220ro':
            case 'iso646jp':
            case 'isoir14':
            case 'jisc62201969ro':
            case 'jp':
                return 'JIS_C6220-1969-ro';

            case 'csiso42jisc62261978':
            case 'isoir42':
            case 'jisc62261978':
                return 'JIS_C6226-1978';

            case 'csiso87jisx208':
            case 'isoir87':
            case 'jisc62261983':
            case 'jisx2081983':
            case 'x208':
                return 'JIS_C6226-1983';

            case 'csiso91jisc62291984a':
            case 'isoir91':
            case 'jisc62291984a':
            case 'jpocra':
                return 'JIS_C6229-1984-a';

            case 'csiso92jisc62991984b':
            case 'iso646jpocrb':
            case 'isoir92':
            case 'jisc62291984b':
            case 'jpocrb':
                return 'JIS_C6229-1984-b';

            case 'csiso93jis62291984badd':
            case 'isoir93':
            case 'jisc62291984badd':
            case 'jpocrbadd':
                return 'JIS_C6229-1984-b-add';

            case 'csiso94jis62291984hand':
            case 'isoir94':
            case 'jisc62291984hand':
            case 'jpocrhand':
                return 'JIS_C6229-1984-hand';

            case 'csiso95jis62291984handadd':
            case 'isoir95':
            case 'jisc62291984handadd':
            case 'jpocrhandadd':
                return 'JIS_C6229-1984-hand-add';

            case 'csiso96jisc62291984kana':
            case 'isoir96':
            case 'jisc62291984kana':
                return 'JIS_C6229-1984-kana';

            case 'csjisencoding':
            case 'jisencoding':
                return 'JIS_Encoding';

            case 'cshalfwidthkatakana':
            case 'jisx201':
            case 'x201':
                return 'JIS_X0201';

            case 'csiso159jisx2121990':
            case 'isoir159':
            case 'jisx2121990':
            case 'x212':
                return 'JIS_X0212-1990';

            case 'csiso141jusib1002':
            case 'iso646yu':
            case 'isoir141':
            case 'js':
            case 'jusib1002':
            case 'yu':
                return 'JUS_I.B1.002';

            case 'csiso147macedonian':
            case 'isoir147':
            case 'jusib1003mac':
            case 'macedonian':
                return 'JUS_I.B1.003-mac';

            case 'csiso146serbian':
            case 'isoir146':
            case 'jusib1003serb':
            case 'serbian':
                return 'JUS_I.B1.003-serb';

            case 'koi7switched':
                return 'KOI7-switched';

            case 'cskoi8r':
            case 'koi8r':
                return 'KOI8-R';

            case 'koi8u':
                return 'KOI8-U';

            case 'csksc5636':
            case 'iso646kr':
            case 'ksc5636':
                return 'KSC5636';

            case 'cskz1048':
            case 'kz1048':
            case 'rk1048':
            case 'strk10482002':
                return 'KZ-1048';

            case 'csiso19latingreek':
            case 'isoir19':
            case 'latingreek':
                return 'latin-greek';

            case 'csiso27latingreek1':
            case 'isoir27':
            case 'latingreek1':
                return 'Latin-greek-1';

            case 'csiso158lap':
            case 'isoir158':
            case 'lap':
            case 'latinlap':
                return 'latin-lap';

            case 'csmacintosh':
            case 'mac':
            case 'macintosh':
                return 'macintosh';

            case 'csmicrosoftpublishing':
            case 'microsoftpublishing':
                return 'Microsoft-Publishing';

            case 'csmnem':
            case 'mnem':
                return 'MNEM';

            case 'csmnemonic':
            case 'mnemonic':
                return 'MNEMONIC';

            case 'csiso86hungarian':
            case 'hu':
            case 'iso646hu':
            case 'isoir86':
            case 'msz77953':
                return 'MSZ_7795.3';

            case 'csnatsdano':
            case 'isoir91':
            case 'natsdano':
                return 'NATS-DANO';

            case 'csnatsdanoadd':
            case 'isoir92':
            case 'natsdanoadd':
                return 'NATS-DANO-ADD';

            case 'csnatssefi':
            case 'isoir81':
            case 'natssefi':
                return 'NATS-SEFI';

            case 'csnatssefiadd':
            case 'isoir82':
            case 'natssefiadd':
                return 'NATS-SEFI-ADD';

            case 'csiso151cuba':
            case 'cuba':
            case 'iso646cu':
            case 'isoir151':
            case 'ncnc1081':
                return 'NC_NC00-10:81';

            case 'csiso69french':
            case 'fr':
            case 'iso646fr':
            case 'isoir69':
            case 'nfz62010':
                return 'NF_Z_62-010';

            case 'csiso25french':
            case 'iso646fr1':
            case 'isoir25':
            case 'nfz620101973':
                return 'NF_Z_62-010_(1973)';

            case 'csiso60danishnorwegian':
            case 'csiso60norwegian1':
            case 'iso646no':
            case 'isoir60':
            case 'no':
            case 'ns45511':
                return 'NS_4551-1';

            case 'csiso61norwegian2':
            case 'iso646no2':
            case 'isoir61':
            case 'no2':
            case 'ns45512':
                return 'NS_4551-2';

            case 'osdebcdicdf3irv':
                return 'OSD_EBCDIC_DF03_IRV';

            case 'osdebcdicdf41':
                return 'OSD_EBCDIC_DF04_1';

            case 'osdebcdicdf415':
                return 'OSD_EBCDIC_DF04_15';

            case 'cspc8danishnorwegian':
            case 'pc8danishnorwegian':
                return 'PC8-Danish-Norwegian';

            case 'cspc8turkish':
            case 'pc8turkish':
                return 'PC8-Turkish';

            case 'csiso16portuguese':
            case 'iso646pt':
            case 'isoir16':
            case 'pt':
                return 'PT';

            case 'csiso84portuguese2':
            case 'iso646pt2':
            case 'isoir84':
            case 'pt2':
                return 'PT2';

            case 'cp154':
            case 'csptcp154':
            case 'cyrillicasian':
            case 'pt154':
            case 'ptcp154':
                return 'PTCP154';

            case 'scsu':
                return 'SCSU';

            case 'csiso10swedish':
            case 'fi':
            case 'iso646fi':
            case 'iso646se':
            case 'isoir10':
            case 'se':
            case 'sen850200b':
                return 'SEN_850200_B';

            case 'csiso11swedishfornames':
            case 'iso646se2':
            case 'isoir11':
            case 'se2':
            case 'sen850200c':
                return 'SEN_850200_C';

            case 'csiso102t617bit':
            case 'isoir102':
            case 't617bit':
                return 'T.61-7bit';

            case 'csiso103t618bit':
            case 'isoir103':
            case 't61':
            case 't618bit':
                return 'T.61-8bit';

            case 'csiso128t101g2':
            case 'isoir128':
            case 't101g2':
                return 'T.101-G2';

            case 'cstscii':
            case 'tscii':
                return 'TSCII';

            case 'csunicode11':
            case 'unicode11':
                return 'UNICODE-1-1';

            case 'csunicode11utf7':
            case 'unicode11utf7':
                return 'UNICODE-1-1-UTF-7';

            case 'csunknown8bit':
            case 'unknown8bit':
                return 'UNKNOWN-8BIT';

            case 'ansix341968':
            case 'ansix341986':
            case 'ascii':
            case 'cp367':
            case 'csascii':
            case 'ibm367':
            case 'iso646irv1991':
            case 'iso646us':
            case 'isoir6':
            case 'us':
            case 'usascii':
                return 'US-ASCII';

            case 'csusdk':
            case 'usdk':
                return 'us-dk';

            case 'utf7':
                return 'UTF-7';

            case 'utf8':
                return 'UTF-8';

            case 'utf16':
                return 'UTF-16';

            case 'utf16be':
                return 'UTF-16BE';

            case 'utf16le':
                return 'UTF-16LE';

            case 'utf32':
                return 'UTF-32';

            case 'utf32be':
                return 'UTF-32BE';

            case 'utf32le':
                return 'UTF-32LE';

            case 'csventurainternational':
            case 'venturainternational':
                return 'Ventura-International';

            case 'csventuramath':
            case 'venturamath':
                return 'Ventura-Math';

            case 'csventuraus':
            case 'venturaus':
                return 'Ventura-US';

            case 'csiso70videotexsupp1':
            case 'isoir70':
            case 'videotexsuppl':
                return 'videotex-suppl';

            case 'csviqr':
            case 'viqr':
                return 'VIQR';

            case 'csviscii':
            case 'viscii':
                return 'VISCII';

            case 'csshiftjis':
            case 'cswindows31j':
            case 'mskanji':
            case 'shiftjis':
            case 'windows31j':
                return 'Windows-31J';

            case 'iso885911':
            case 'tis620':
                return 'windows-874';

            case 'cseuckr':
            case 'csksc56011987':
            case 'euckr':
            case 'isoir149':
            case 'korean':
            case 'ksc5601':
            case 'ksc56011987':
            case 'ksc56011989':
            case 'windows949':
                return 'windows-949';

            case 'windows1250':
                return 'windows-1250';

            case 'windows1251':
                return 'windows-1251';

            case 'cp819':
            case 'csisolatin1':
            case 'ibm819':
            case 'iso88591':
            case 'iso885911987':
            case 'isoir100':
            case 'l1':
            case 'latin1':
            case 'windows1252':
                return 'windows-1252';

            case 'windows1253':
                return 'windows-1253';

            case 'csisolatin5':
            case 'iso88599':
            case 'iso885991989':
            case 'isoir148':
            case 'l5':
            case 'latin5':
            case 'windows1254':
                return 'windows-1254';

            case 'windows1255':
                return 'windows-1255';

            case 'windows1256':
                return 'windows-1256';

            case 'windows1257':
                return 'windows-1257';

            case 'windows1258':
                return 'windows-1258';

            default:
                return $charset;
        }
    }

    public static function get_curl_version()
    {
        if (is_array($curl = curl_version())) {
            $curl = $curl['version'];
        } elseif (substr($curl, 0, 5) === 'curl/') {
            $curl = substr($curl, 5, strcspn($curl, "\x09\x0A\x0B\x0C\x0D", 5));
        } elseif (substr($curl, 0, 8) === 'libcurl/') {
            $curl = substr($curl, 8, strcspn($curl, "\x09\x0A\x0B\x0C\x0D", 8));
        } else {
            $curl = 0;
        }
        return $curl;
    }

    /**
     * Strip HTML comments
     *
     * @param string $data Data to strip comments from
     * @return string Comment stripped string
     */
    public static function strip_comments($data)
    {
        $output = '';
        while (($start = strpos($data, '<!--')) !== false) {
            $output .= substr($data, 0, $start);
            if (($end = strpos($data, '-->', $start)) !== false) {
                $data = substr_replace($data, '', 0, $end + 3);
            } else {
                $data = '';
            }
        }
        return $output . $data;
    }

    public static function parse_date($dt)
    {
        $parser = \SimplePie\Parse\Date::get();
        return $parser->parse($dt);
    }

    /**
     * Decode HTML entities
     *
     * @deprecated since SimplePie 1.3, use DOMDocument instead
     * @param string $data Input data
     * @return string Output data
     */
    public static function entities_decode($data)
    {
        // trigger_error(sprintf('Using method "' . __METHOD__ . '" is deprecated since SimplePie 1.3, use "DOMDocument" instead.'), \E_USER_DEPRECATED);

        $decoder = new \SimplePie_Decode_HTML_Entities($data);
        return $decoder->parse();
    }

    /**
     * Remove RFC822 comments
     *
     * @param string $data Data to strip comments from
     * @return string Comment stripped string
     */
    public static function uncomment_rfc822($string)
    {
        $string = (string) $string;
        $position = 0;
        $length = strlen($string);
        $depth = 0;

        $output = '';

        while ($position < $length && ($pos = strpos($string, '(', $position)) !== false) {
            $output .= substr($string, $position, $pos - $position);
            $position = $pos + 1;
            if ($string[$pos - 1] !== '\\') {
                $depth++;
                while ($depth && $position < $length) {
                    $position += strcspn($string, '()', $position);
                    if ($string[$position - 1] === '\\') {
                        $position++;
                        continue;
                    } elseif (isset($string[$position])) {
                        switch ($string[$position]) {
                            case '(':
                                $depth++;
                                break;

                            case ')':
                                $depth--;
                                break;
                        }
                        $position++;
                    } else {
                        break;
                    }
                }
            } else {
                $output .= '(';
            }
        }
        $output .= substr($string, $position);

        return $output;
    }

    public static function parse_mime($mime)
    {
        if (($pos = strpos($mime, ';')) === false) {
            return trim($mime);
        }

        return trim(substr($mime, 0, $pos));
    }

    public static function atom_03_construct_type($attribs)
    {
        if (isset($attribs['']['mode']) && strtolower(trim($attribs['']['mode'])) === 'base64') {
            $mode = \SimplePie\SimplePie::CONSTRUCT_BASE64;
        } else {
            $mode = \SimplePie\SimplePie::CONSTRUCT_NONE;
        }
        if (isset($attribs['']['type'])) {
            switch (strtolower(trim($attribs['']['type']))) {
                case 'text':
                case 'text/plain':
                    return \SimplePie\SimplePie::CONSTRUCT_TEXT | $mode;

                case 'html':
                case 'text/html':
                    return \SimplePie\SimplePie::CONSTRUCT_HTML | $mode;

                case 'xhtml':
                case 'application/xhtml+xml':
                    return \SimplePie\SimplePie::CONSTRUCT_XHTML | $mode;

                default:
                    return \SimplePie\SimplePie::CONSTRUCT_NONE | $mode;
            }
        }

        return \SimplePie\SimplePie::CONSTRUCT_TEXT | $mode;
    }

    public static function atom_10_construct_type($attribs)
    {
        if (isset($attribs['']['type'])) {
            switch (strtolower(trim($attribs['']['type']))) {
                case 'text':
                    return \SimplePie\SimplePie::CONSTRUCT_TEXT;

                case 'html':
                    return \SimplePie\SimplePie::CONSTRUCT_HTML;

                case 'xhtml':
                    return \SimplePie\SimplePie::CONSTRUCT_XHTML;

                default:
                    return \SimplePie\SimplePie::CONSTRUCT_NONE;
            }
        }
        return \SimplePie\SimplePie::CONSTRUCT_TEXT;
    }

    public static function atom_10_content_construct_type($attribs)
    {
        if (isset($attribs['']['type'])) {
            $type = strtolower(trim($attribs['']['type']));
            switch ($type) {
                case 'text':
                    return \SimplePie\SimplePie::CONSTRUCT_TEXT;

                case 'html':
                    return \SimplePie\SimplePie::CONSTRUCT_HTML;

                case 'xhtml':
                    return \SimplePie\SimplePie::CONSTRUCT_XHTML;
            }
            if (in_array(substr($type, -4), ['+xml', '/xml']) || substr($type, 0, 5) === 'text/') {
                return \SimplePie\SimplePie::CONSTRUCT_NONE;
            } else {
                return \SimplePie\SimplePie::CONSTRUCT_BASE64;
            }
        }

        return \SimplePie\SimplePie::CONSTRUCT_TEXT;
    }

    public static function is_isegment_nz_nc($string)
    {
        return (bool) preg_match('/^([A-Za-z0-9\-._~\x{A0}-\x{D7FF}\x{F900}-\x{FDCF}\x{FDF0}-\x{FFEF}\x{10000}-\x{1FFFD}\x{20000}-\x{2FFFD}\x{30000}-\x{3FFFD}\x{40000}-\x{4FFFD}\x{50000}-\x{5FFFD}\x{60000}-\x{6FFFD}\x{70000}-\x{7FFFD}\x{80000}-\x{8FFFD}\x{90000}-\x{9FFFD}\x{A0000}-\x{AFFFD}\x{B0000}-\x{BFFFD}\x{C0000}-\x{CFFFD}\x{D0000}-\x{DFFFD}\x{E1000}-\x{EFFFD}!$&\'()*+,;=@]|(%[0-9ABCDEF]{2}))+$/u', $string);
    }

    public static function space_separated_tokens($string)
    {
        $space_characters = "\x20\x09\x0A\x0B\x0C\x0D";
        $string_length = strlen($string);

        $position = strspn($string, $space_characters);
        $tokens = [];

        while ($position < $string_length) {
            $len = strcspn($string, $space_characters, $position);
            $tokens[] = substr($string, $position, $len);
            $position += $len;
            $position += strspn($string, $space_characters, $position);
        }

        return $tokens;
    }

    /**
     * Converts a unicode codepoint to a UTF-8 character
     *
     * @static
     * @param int $codepoint Unicode codepoint
     * @return string UTF-8 character
     */
    public static function codepoint_to_utf8($codepoint)
    {
        $codepoint = (int) $codepoint;
        if ($codepoint < 0) {
            return false;
        } elseif ($codepoint <= 0x7f) {
            return chr($codepoint);
        } elseif ($codepoint <= 0x7ff) {
            return chr(0xc0 | ($codepoint >> 6)) . chr(0x80 | ($codepoint & 0x3f));
        } elseif ($codepoint <= 0xffff) {
            return chr(0xe0 | ($codepoint >> 12)) . chr(0x80 | (($codepoint >> 6) & 0x3f)) . chr(0x80 | ($codepoint & 0x3f));
        } elseif ($codepoint <= 0x10ffff) {
            return chr(0xf0 | ($codepoint >> 18)) . chr(0x80 | (($codepoint >> 12) & 0x3f)) . chr(0x80 | (($codepoint >> 6) & 0x3f)) . chr(0x80 | ($codepoint & 0x3f));
        }

        // U+FFFD REPLACEMENT CHARACTER
        return "\xEF\xBF\xBD";
    }

    /**
     * Similar to parse_str()
     *
     * Returns an associative array of name/value pairs, where the value is an
     * array of values that have used the same name
     *
     * @static
     * @param string $str The input string.
     * @return array
     */
    public static function parse_str($str)
    {
        $return = [];
        $str = explode('&', $str);

        foreach ($str as $section) {
            if (strpos($section, '=') !== false) {
                [$name, $value] = explode('=', $section, 2);
                $return[urldecode($name)][] = urldecode($value);
            } else {
                $return[urldecode($section)][] = null;
            }
        }

        return $return;
    }

    /**
     * Detect XML encoding, as per XML 1.0 Appendix F.1
     *
     * @todo Add support for EBCDIC
     * @param string $data XML data
     * @param \SimplePie\Registry $registry Class registry
     * @return array Possible encodings
     */
    public static function xml_encoding($data, $registry)
    {
        // UTF-32 Big Endian BOM
        if (substr($data, 0, 4) === "\x00\x00\xFE\xFF") {
            $encoding[] = 'UTF-32BE';
        }
        // UTF-32 Little Endian BOM
        elseif (substr($data, 0, 4) === "\xFF\xFE\x00\x00") {
            $encoding[] = 'UTF-32LE';
        }
        // UTF-16 Big Endian BOM
        elseif (substr($data, 0, 2) === "\xFE\xFF") {
            $encoding[] = 'UTF-16BE';
        }
        // UTF-16 Little Endian BOM
        elseif (substr($data, 0, 2) === "\xFF\xFE") {
            $encoding[] = 'UTF-16LE';
        }
        // UTF-8 BOM
        elseif (substr($data, 0, 3) === "\xEF\xBB\xBF") {
            $encoding[] = 'UTF-8';
        }
        // UTF-32 Big Endian Without BOM
        elseif (substr($data, 0, 20) === "\x00\x00\x00\x3C\x00\x00\x00\x3F\x00\x00\x00\x78\x00\x00\x00\x6D\x00\x00\x00\x6C") {
            if ($pos = strpos($data, "\x00\x00\x00\x3F\x00\x00\x00\x3E")) {
                $parser = $registry->create(Parser::class, [Misc::change_encoding(substr($data, 20, $pos - 20), 'UTF-32BE', 'UTF-8')]);
                if ($parser->parse()) {
                    $encoding[] = $parser->encoding;
                }
            }
            $encoding[] = 'UTF-32BE';
        }
        // UTF-32 Little Endian Without BOM
        elseif (substr($data, 0, 20) === "\x3C\x00\x00\x00\x3F\x00\x00\x00\x78\x00\x00\x00\x6D\x00\x00\x00\x6C\x00\x00\x00") {
            if ($pos = strpos($data, "\x3F\x00\x00\x00\x3E\x00\x00\x00")) {
                $parser = $registry->create(Parser::class, [Misc::change_encoding(substr($data, 20, $pos - 20), 'UTF-32LE', 'UTF-8')]);
                if ($parser->parse()) {
                    $encoding[] = $parser->encoding;
                }
            }
            $encoding[] = 'UTF-32LE';
        }
        // UTF-16 Big Endian Without BOM
        elseif (substr($data, 0, 10) === "\x00\x3C\x00\x3F\x00\x78\x00\x6D\x00\x6C") {
            if ($pos = strpos($data, "\x00\x3F\x00\x3E")) {
                $parser = $registry->create(Parser::class, [Misc::change_encoding(substr($data, 20, $pos - 10), 'UTF-16BE', 'UTF-8')]);
                if ($parser->parse()) {
                    $encoding[] = $parser->encoding;
                }
            }
            $encoding[] = 'UTF-16BE';
        }
        // UTF-16 Little Endian Without BOM
        elseif (substr($data, 0, 10) === "\x3C\x00\x3F\x00\x78\x00\x6D\x00\x6C\x00") {
            if ($pos = strpos($data, "\x3F\x00\x3E\x00")) {
                $parser = $registry->create(Parser::class, [Misc::change_encoding(substr($data, 20, $pos - 10), 'UTF-16LE', 'UTF-8')]);
                if ($parser->parse()) {
                    $encoding[] = $parser->encoding;
                }
            }
            $encoding[] = 'UTF-16LE';
        }
        // US-ASCII (or superset)
        elseif (substr($data, 0, 5) === "\x3C\x3F\x78\x6D\x6C") {
            if ($pos = strpos($data, "\x3F\x3E")) {
                $parser = $registry->create(Parser::class, [substr($data, 5, $pos - 5)]);
                if ($parser->parse()) {
                    $encoding[] = $parser->encoding;
                }
            }
            $encoding[] = 'UTF-8';
        }
        // Fallback to UTF-8
        else {
            $encoding[] = 'UTF-8';
        }
        return $encoding;
    }

    public static function output_javascript()
    {
        if (function_exists('ob_gzhandler')) {
            ob_start('ob_gzhandler');
        }
        header('Content-type: text/javascript; charset: UTF-8');
        header('Cache-Control: must-revalidate');
        header('Expires: ' . gmdate('D, d M Y H:i:s', time() + 604800) . ' GMT'); // 7 days

        $body = <<<END
function embed_quicktime(type, bgcolor, width, height, link, placeholder, loop) {
	if (placeholder != '') {
		document.writeln('<embed type="'+type+'" style="cursor:hand; cursor:pointer;" href="'+link+'" src="'+placeholder+'" width="'+width+'" height="'+height+'" autoplay="false" target="myself" controller="false" loop="'+loop+'" scale="aspect" bgcolor="'+bgcolor+'" pluginspage="http://www.apple.com/quicktime/download/"></embed>');
	}
	else {
		document.writeln('<embed type="'+type+'" style="cursor:hand; cursor:pointer;" src="'+link+'" width="'+width+'" height="'+height+'" autoplay="false" target="myself" controller="true" loop="'+loop+'" scale="aspect" bgcolor="'+bgcolor+'" pluginspage="http://www.apple.com/quicktime/download/"></embed>');
	}
}

function embed_flash(bgcolor, width, height, link, loop, type) {
	document.writeln('<embed src="'+link+'" pluginspage="http://www.macromedia.com/go/getflashplayer" type="'+type+'" quality="high" width="'+width+'" height="'+height+'" bgcolor="'+bgcolor+'" loop="'+loop+'"></embed>');
}

function embed_flv(width, height, link, placeholder, loop, player) {
	document.writeln('<embed src="'+player+'" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" quality="high" width="'+width+'" height="'+height+'" wmode="transparent" flashvars="file='+link+'&autostart=false&repeat='+loop+'&showdigits=true&showfsbutton=false"></embed>');
}

function embed_wmedia(width, height, link) {
	document.writeln('<embed type="application/x-mplayer2" src="'+link+'" autosize="1" width="'+width+'" height="'+height+'" showcontrols="1" showstatusbar="0" showdisplay="0" autostart="0"></embed>');
}
END;
        echo $body;
    }

    /**
     * Get the SimplePie build timestamp
     *
     * Uses the git index if it exists, otherwise uses the modification time
     * of the newest file.
     */
    public static function get_build()
    {
        if (static::$SIMPLEPIE_BUILD !== null) {
            return static::$SIMPLEPIE_BUILD;
        }

        $root = dirname(__FILE__, 2);
        if (file_exists($root . '/.git/index')) {
            static::$SIMPLEPIE_BUILD = filemtime($root . '/.git/index');

            return static::$SIMPLEPIE_BUILD;
        } elseif (file_exists($root . '/SimplePie')) {
            $time = 0;
            foreach (glob($root . '/SimplePie/*.php') as $file) {
                if (($mtime = filemtime($file)) > $time) {
                    $time = $mtime;
                }
            }
            static::$SIMPLEPIE_BUILD = $time;

            return static::$SIMPLEPIE_BUILD;
        } elseif (file_exists(dirname(__FILE__) . '/Core.php')) {
            static::$SIMPLEPIE_BUILD = filemtime(dirname(__FILE__) . '/Core.php');

            return static::$SIMPLEPIE_BUILD;
        }

        static::$SIMPLEPIE_BUILD = filemtime(__FILE__);

        return static::$SIMPLEPIE_BUILD;
    }

    /**
     * Get the default user agent string
     *
     * @return string
     */
    public static function get_default_useragent()
    {
        return \SimplePie\SimplePie::NAME . '/' . \SimplePie\SimplePie::VERSION . ' (Feed Parser; ' . \SimplePie\SimplePie::URL . '; Allow like Gecko) Build/' . static::get_build();
    }

    /**
     * Format debugging information
     */
    public static function debug(&$sp)
    {
        $info = 'SimplePie ' . \SimplePie\SimplePie::VERSION . ' Build ' . static::get_build() . "\n";
        $info .= 'PHP ' . PHP_VERSION . "\n";
        if ($sp->error() !== null) {
            $info .= 'Error occurred: ' . $sp->error() . "\n";
        } else {
            $info .= "No error found.\n";
        }
        $info .= "Extensions:\n";
        $extensions = ['pcre', 'curl', 'zlib', 'mbstring', 'iconv', 'xmlreader', 'xml'];
        foreach ($extensions as $ext) {
            if (extension_loaded($ext)) {
                $info .= "    $ext loaded\n";
                switch ($ext) {
                    case 'pcre':
                        $info .= '      Version ' . PCRE_VERSION . "\n";
                        break;
                    case 'curl':
                        $version = curl_version();
                        $info .= '      Version ' . $version['version'] . "\n";
                        break;
                    case 'mbstring':
                        $info .= '      Overloading: ' . mb_get_info('func_overload') . "\n";
                        break;
                    case 'iconv':
                        $info .= '      Version ' . ICONV_VERSION . "\n";
                        break;
                    case 'xml':
                        $info .= '      Version ' . LIBXML_DOTTED_VERSION . "\n";
                        break;
                }
            } else {
                $info .= "    $ext not loaded\n";
            }
        }
        return $info;
    }

    public static function silence_errors($num, $str)
    {
        // No-op
    }

    /**
     * Sanitize a URL by removing HTTP credentials.
     * @param string $url the URL to sanitize.
     * @return string the same URL without HTTP credentials.
     */
    public static function url_remove_credentials($url)
    {
        return preg_replace('#^(https?://)[^/:@]+:[^/:@]+@#i', '$1', $url);
    }
}

class_alias('SimplePie\Misc', 'SimplePie_Misc', false);
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