Proyectos de Subversion Moodle

<?php

declare(strict_types=1);

/**

 * 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\Parse;

/**

 * Date Parser

 *

 * @package SimplePie

 * @subpackage Parsing

 */

class Date

{

    /**

     * Input data

     *

     * @access protected

     * @var string

     */

    public $date;

    /**

     * List of days, calendar day name => ordinal day number in the week

     *

     * @access protected

     * @var array

     */

    public $day = [

        // English

        'mon' => 1,

        'monday' => 1,

        'tue' => 2,

        'tuesday' => 2,

        'wed' => 3,

        'wednesday' => 3,

        'thu' => 4,

        'thursday' => 4,

        'fri' => 5,

        'friday' => 5,

        'sat' => 6,

        'saturday' => 6,

        'sun' => 7,

        'sunday' => 7,

        // Dutch

        'maandag' => 1,

        'dinsdag' => 2,

        'woensdag' => 3,

        'donderdag' => 4,

        'vrijdag' => 5,

        'zaterdag' => 6,

        'zondag' => 7,

        // French

        'lundi' => 1,

        'mardi' => 2,

        'mercredi' => 3,

        'jeudi' => 4,

        'vendredi' => 5,

        'samedi' => 6,

        'dimanche' => 7,

        // German

        'montag' => 1,

        'mo' => 1,

        'dienstag' => 2,

        'di' => 2,

        'mittwoch' => 3,

        'mi' => 3,

        'donnerstag' => 4,

        'do' => 4,

        'freitag' => 5,

        'fr' => 5,

        'samstag' => 6,

        'sa' => 6,

        'sonnabend' => 6,

        // AFAIK no short form for sonnabend

        'so' => 7,

        'sonntag' => 7,

        // Italian

        'lunedì' => 1,

        'martedì' => 2,

        'mercoledì' => 3,

        'giovedì' => 4,

        'venerdì' => 5,

        'sabato' => 6,

        'domenica' => 7,

        // Spanish

        'lunes' => 1,

        'martes' => 2,

        'miércoles' => 3,

        'jueves' => 4,

        'viernes' => 5,

        'sábado' => 6,

        'domingo' => 7,

        // Finnish

        'maanantai' => 1,

        'tiistai' => 2,

        'keskiviikko' => 3,

        'torstai' => 4,

        'perjantai' => 5,

        'lauantai' => 6,

        'sunnuntai' => 7,

        // Hungarian

        'hétfő' => 1,

        'kedd' => 2,

        'szerda' => 3,

        'csütörtok' => 4,

        'péntek' => 5,

        'szombat' => 6,

        'vasárnap' => 7,

        // Greek

        'Δευ' => 1,

        'Τρι' => 2,

        'Τετ' => 3,

        'Πεμ' => 4,

        'Παρ' => 5,

        'Σαβ' => 6,

        'Κυρ' => 7,

        // Russian

        'Пн.' => 1,

        'Вт.' => 2,

        'Ср.' => 3,

        'Чт.' => 4,

        'Пт.' => 5,

        'Сб.' => 6,

        'Вс.' => 7,

    ];

    /**

     * List of months, calendar month name => calendar month number

     *

     * @access protected

     * @var array

     */

    public $month = [

        // English

        'jan' => 1,

        'january' => 1,

        'feb' => 2,

        'february' => 2,

        'mar' => 3,

        'march' => 3,

        'apr' => 4,

        'april' => 4,

        'may' => 5,

        // No long form of May

        'jun' => 6,

        'june' => 6,

        'jul' => 7,

        'july' => 7,

        'aug' => 8,

        'august' => 8,

        'sep' => 9,

        'september' => 9,

        'oct' => 10,

        'october' => 10,

        'nov' => 11,

        'november' => 11,

        'dec' => 12,

        'december' => 12,

        // Dutch

        'januari' => 1,

        'februari' => 2,

        'maart' => 3,

        'april' => 4,

        'mei' => 5,

        'juni' => 6,

        'juli' => 7,

        'augustus' => 8,

        'september' => 9,

        'oktober' => 10,

        'november' => 11,

        'december' => 12,

        // French

        'janvier' => 1,

        'février' => 2,

        'mars' => 3,

        'avril' => 4,

        'mai' => 5,

        'juin' => 6,

        'juillet' => 7,

        'août' => 8,

        'septembre' => 9,

        'octobre' => 10,

        'novembre' => 11,

        'décembre' => 12,

        // German

        'januar' => 1,

        'jan' => 1,

        'februar' => 2,

        'feb' => 2,

        'märz' => 3,

        'mär' => 3,

        'april' => 4,

        'apr' => 4,

        'mai' => 5, // no short form for may

        'juni' => 6,

        'jun' => 6,

        'juli' => 7,

        'jul' => 7,

        'august' => 8,

        'aug' => 8,

        'september' => 9,

        'sep' => 9,

        'oktober' => 10,

        'okt' => 10,

        'november' => 11,

        'nov' => 11,

        'dezember' => 12,

        'dez' => 12,

        // Italian

        'gennaio' => 1,

        'febbraio' => 2,

        'marzo' => 3,

        'aprile' => 4,

        'maggio' => 5,

        'giugno' => 6,

        'luglio' => 7,

        'agosto' => 8,

        'settembre' => 9,

        'ottobre' => 10,

        'novembre' => 11,

        'dicembre' => 12,

        // Spanish

        'enero' => 1,

        'febrero' => 2,

        'marzo' => 3,

        'abril' => 4,

        'mayo' => 5,

        'junio' => 6,

        'julio' => 7,

        'agosto' => 8,

        'septiembre' => 9,

        'setiembre' => 9,

        'octubre' => 10,

        'noviembre' => 11,

        'diciembre' => 12,

        // Finnish

        'tammikuu' => 1,

        'helmikuu' => 2,

        'maaliskuu' => 3,

        'huhtikuu' => 4,

        'toukokuu' => 5,

        'kesäkuu' => 6,

        'heinäkuu' => 7,

        'elokuu' => 8,

        'suuskuu' => 9,

        'lokakuu' => 10,

        'marras' => 11,

        'joulukuu' => 12,

        // Hungarian

        'január' => 1,

        'február' => 2,

        'március' => 3,

        'április' => 4,

        'május' => 5,

        'június' => 6,

        'július' => 7,

        'augusztus' => 8,

        'szeptember' => 9,

        'október' => 10,

        'november' => 11,

        'december' => 12,

        // Greek

        'Ιαν' => 1,

        'Φεβ' => 2,

        'Μάώ' => 3,

        'Μαώ' => 3,

        'Απρ' => 4,

        'Μάι' => 5,

        'Μαϊ' => 5,

        'Μαι' => 5,

        'Ιούν' => 6,

        'Ιον' => 6,

        'Ιούλ' => 7,

        'Ιολ' => 7,

        'Αύγ' => 8,

        'Αυγ' => 8,

        'Σεπ' => 9,

        'Οκτ' => 10,

        'Νοέ' => 11,

        'Δεκ' => 12,

        // Russian

        'Янв' => 1,

        'января' => 1,

        'Фев' => 2,

        'февраля' => 2,

        'Мар' => 3,

        'марта' => 3,

        'Апр' => 4,

        'апреля' => 4,

        'Май' => 5,

        'мая' => 5,

        'Июн' => 6,

        'июня' => 6,

        'Июл' => 7,

        'июля' => 7,

        'Авг' => 8,

        'августа' => 8,

        'Сен' => 9,

        'сентября' => 9,

        'Окт' => 10,

        'октября' => 10,

        'Ноя' => 11,

        'ноября' => 11,

        'Дек' => 12,

        'декабря' => 12,

    ];

    /**

     * List of timezones, abbreviation => offset from UTC

     *

     * @access protected

     * @var array

     */

    public $timezone = [

        'ACDT' => 37800,

        'ACIT' => 28800,

        'ACST' => 34200,

        'ACT' => -18000,

        'ACWDT' => 35100,

        'ACWST' => 31500,

        'AEDT' => 39600,

        'AEST' => 36000,

        'AFT' => 16200,

        'AKDT' => -28800,

        'AKST' => -32400,

        'AMDT' => 18000,

        'AMT' => -14400,

        'ANAST' => 46800,

        'ANAT' => 43200,

        'ART' => -10800,

        'AZOST' => -3600,

        'AZST' => 18000,

        'AZT' => 14400,

        'BIOT' => 21600,

        'BIT' => -43200,

        'BOT' => -14400,

        'BRST' => -7200,

        'BRT' => -10800,

        'BST' => 3600,

        'BTT' => 21600,

        'CAST' => 18000,

        'CAT' => 7200,

        'CCT' => 23400,

        'CDT' => -18000,

        'CEDT' => 7200,

        'CEST' => 7200,

        'CET' => 3600,

        'CGST' => -7200,

        'CGT' => -10800,

        'CHADT' => 49500,

        'CHAST' => 45900,

        'CIST' => -28800,

        'CKT' => -36000,

        'CLDT' => -10800,

        'CLST' => -14400,

        'COT' => -18000,

        'CST' => -21600,

        'CVT' => -3600,

        'CXT' => 25200,

        'DAVT' => 25200,

        'DTAT' => 36000,

        'EADT' => -18000,

        'EAST' => -21600,

        'EAT' => 10800,

        'ECT' => -18000,

        'EDT' => -14400,

        'EEST' => 10800,

        'EET' => 7200,

        'EGT' => -3600,

        'EKST' => 21600,

        'EST' => -18000,

        'FJT' => 43200,

        'FKDT' => -10800,

        'FKST' => -14400,

        'FNT' => -7200,

        'GALT' => -21600,

        'GEDT' => 14400,

        'GEST' => 10800,

        'GFT' => -10800,

        'GILT' => 43200,

        'GIT' => -32400,

        'GST' => 14400,

        'GST' => -7200,

        'GYT' => -14400,

        'HAA' => -10800,

        'HAC' => -18000,

        'HADT' => -32400,

        'HAE' => -14400,

        'HAP' => -25200,

        'HAR' => -21600,

        'HAST' => -36000,

        'HAT' => -9000,

        'HAY' => -28800,

        'HKST' => 28800,

        'HMT' => 18000,

        'HNA' => -14400,

        'HNC' => -21600,

        'HNE' => -18000,

        'HNP' => -28800,

        'HNR' => -25200,

        'HNT' => -12600,

        'HNY' => -32400,

        'IRDT' => 16200,

        'IRKST' => 32400,

        'IRKT' => 28800,

        'IRST' => 12600,

        'JFDT' => -10800,

        'JFST' => -14400,

        'JST' => 32400,

        'KGST' => 21600,

        'KGT' => 18000,

        'KOST' => 39600,

        'KOVST' => 28800,

        'KOVT' => 25200,

        'KRAST' => 28800,

        'KRAT' => 25200,

        'KST' => 32400,

        'LHDT' => 39600,

        'LHST' => 37800,

        'LINT' => 50400,

        'LKT' => 21600,

        'MAGST' => 43200,

        'MAGT' => 39600,

        'MAWT' => 21600,

        'MDT' => -21600,

        'MESZ' => 7200,

        'MEZ' => 3600,

        'MHT' => 43200,

        'MIT' => -34200,

        'MNST' => 32400,

        'MSDT' => 14400,

        'MSST' => 10800,

        'MST' => -25200,

        'MUT' => 14400,

        'MVT' => 18000,

        'MYT' => 28800,

        'NCT' => 39600,

        'NDT' => -9000,

        'NFT' => 41400,

        'NMIT' => 36000,

        'NOVST' => 25200,

        'NOVT' => 21600,

        'NPT' => 20700,

        'NRT' => 43200,

        'NST' => -12600,

        'NUT' => -39600,

        'NZDT' => 46800,

        'NZST' => 43200,

        'OMSST' => 25200,

        'OMST' => 21600,

        'PDT' => -25200,

        'PET' => -18000,

        'PETST' => 46800,

        'PETT' => 43200,

        'PGT' => 36000,

        'PHOT' => 46800,

        'PHT' => 28800,

        'PKT' => 18000,

        'PMDT' => -7200,

        'PMST' => -10800,

        'PONT' => 39600,

        'PST' => -28800,

        'PWT' => 32400,

        'PYST' => -10800,

        'PYT' => -14400,

        'RET' => 14400,

        'ROTT' => -10800,

        'SAMST' => 18000,

        'SAMT' => 14400,

        'SAST' => 7200,

        'SBT' => 39600,

        'SCDT' => 46800,

        'SCST' => 43200,

        'SCT' => 14400,

        'SEST' => 3600,

        'SGT' => 28800,

        'SIT' => 28800,

        'SRT' => -10800,

        'SST' => -39600,

        'SYST' => 10800,

        'SYT' => 7200,

        'TFT' => 18000,

        'THAT' => -36000,

        'TJT' => 18000,

        'TKT' => -36000,

        'TMT' => 18000,

        'TOT' => 46800,

        'TPT' => 32400,

        'TRUT' => 36000,

        'TVT' => 43200,

        'TWT' => 28800,

        'UYST' => -7200,

        'UYT' => -10800,

        'UZT' => 18000,

        'VET' => -14400,

        'VLAST' => 39600,

        'VLAT' => 36000,

        'VOST' => 21600,

        'VUT' => 39600,

        'WAST' => 7200,

        'WAT' => 3600,

        'WDT' => 32400,

        'WEST' => 3600,

        'WFT' => 43200,

        'WIB' => 25200,

        'WIT' => 32400,

        'WITA' => 28800,

        'WKST' => 18000,

        'WST' => 28800,

        'YAKST' => 36000,

        'YAKT' => 32400,

        'YAPT' => 36000,

        'YEKST' => 21600,

        'YEKT' => 18000,

    ];

    /**

     * Cached PCRE for Date::$day

     *

     * @access protected

     * @var string

     */

    public $day_pcre;

    /**

     * Cached PCRE for Date::$month

     *

     * @access protected

     * @var string

     */

    public $month_pcre;

    /**

     * Array of user-added callback methods

     *

     * @access private

     * @var array

     */

    public $built_in = [];

    /**

     * Array of user-added callback methods

     *

     * @access private

     * @var array

     */

    public $user = [];

    /**

     * Create new Date object, and set self::day_pcre,

     * self::month_pcre, and self::built_in

     *

     * @access private

     */

    public function __construct()

    {

        $this->day_pcre = '(' . implode('|', array_keys($this->day)) . ')';

        $this->month_pcre = '(' . implode('|', array_keys($this->month)) . ')';

        static $cache;

        if (!isset($cache[get_class($this)])) {

            $all_methods = get_class_methods($this);

            foreach ($all_methods as $method) {

                if (strtolower(substr($method, 0, 5)) === 'date_') {

                    $cache[get_class($this)][] = $method;

                }

            }

        }

        foreach ($cache[get_class($this)] as $method) {

            $this->built_in[] = $method;

        }

    }

    /**

     * Get the object

     *

     * @access public

     */

    public static function get()

    {

        static $object;

        if (!$object) {

            $object = new Date();

        }

        return $object;

    }

    /**

     * Parse a date

     *

     * @final

     * @access public

     * @param string $date Date to parse

     * @return int Timestamp corresponding to date string, or false on failure

     */

    public function parse($date)

    {

        foreach ($this->user as $method) {

            if (($returned = call_user_func($method, $date)) !== false) {

                return $returned;

            }

        }

        foreach ($this->built_in as $method) {

            if (($returned = call_user_func([$this, $method], $date)) !== false) {

                return $returned;

            }

        }

        return false;

    }

    /**

     * Add a callback method to parse a date

     *

     * @final

     * @access public

     * @param callable $callback

     */

    public function add_callback($callback)

    {

        if (is_callable($callback)) {

            $this->user[] = $callback;

        } else {

            trigger_error('User-supplied function must be a valid callback', E_USER_WARNING);

        }

    }

    /**

     * Parse a superset of W3C-DTF (allows hyphens and colons to be omitted, as

     * well as allowing any of upper or lower case "T", horizontal tabs, or

     * spaces to be used as the time separator (including more than one))

     *

     * @access protected

     * @return int Timestamp

     */

    public function date_w3cdtf($date)

    {

        $pcre = <<<'PCRE'

            /

            ^

            (?P<year>[0-9]{4})

            (?:

                -?

                (?P<month>[0-9]{2})

                (?:

                    -?

                    (?P<day>[0-9]{2})

                    (?:

                        [Tt\x09\x20]+

                        (?P<hour>[0-9]{2})

                        (?:

                            :?

                            (?P<minute>[0-9]{2})

                            (?:

                                :?

                                (?P<second>[0-9]{2})

                                (?:

                                    .

                                    (?P<second_fraction>[0-9]*)

                                )?

                            )?

                        )?

                        (?:

                            (?P<zulu>Z)

                            |   (?P<tz_sign>[+\-])

                                (?P<tz_hour>[0-9]{1,2})

                                :?

                                (?P<tz_minute>[0-9]{1,2})

                        )

                    )?

                )?

            )?

            $

            /x

PCRE;

        if (preg_match($pcre, $date, $match)) {

            // Fill in empty matches and convert to proper types.

            $year = (int) $match['year'];

            $month = isset($match['month']) ? (int) $match['month'] : 1;

            $day = isset($match['day']) ? (int) $match['day'] : 1;

            $hour = isset($match['hour']) ? (int) $match['hour'] : 0;

            $minute = isset($match['minute']) ? (int) $match['minute'] : 0;

            $second = isset($match['second']) ? (int) $match['second'] : 0;

            $second_fraction = isset($match['second_fraction']) ? ((int) $match['second_fraction']) / (10 ** strlen($match['second_fraction'])) : 0;

            $tz_sign = ($match['tz_sign'] ?? '') === '-' ? -1 : 1;

            $tz_hour = isset($match['tz_hour']) ? (int) $match['tz_hour'] : 0;

            $tz_minute = isset($match['tz_minute']) ? (int) $match['tz_minute'] : 0;

            // Numeric timezone

            $timezone = $tz_hour * 3600;

            $timezone += $tz_minute * 60;

            $timezone *= $tz_sign;

            // Convert the number of seconds to an integer, taking decimals into account

            $second = (int) round($second + $second_fraction);

            return gmmktime($hour, $minute, $second, $month, $day, $year) - $timezone;

        }

        return false;

    }

    /**

     * Remove RFC822 comments

     *

     * @access protected

     * @param string $data Data to strip comments from

     * @return string Comment stripped string

     */

    public function remove_rfc2822_comments($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 ($pos === 0 || $string[$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;

    }

    /**

     * Parse RFC2822's date format

     *

     * @access protected

     * @return int Timestamp

     */

    public function date_rfc2822($date)

    {

        static $pcre;

        if (!$pcre) {

            $wsp = '[\x09\x20]';

            $fws = '(?:' . $wsp . '+|' . $wsp . '*(?:\x0D\x0A' . $wsp . '+)+)';

            $optional_fws = $fws . '?';

            $day_name = $this->day_pcre;

            $month = $this->month_pcre;

            $day = '([0-9]{1,2})';

            $hour = $minute = $second = '([0-9]{2})';

            $year = '([0-9]{2,4})';

            $num_zone = '([+\-])([0-9]{2})([0-9]{2})';

            $character_zone = '([A-Z]{1,5})';

            $zone = '(?:' . $num_zone . '|' . $character_zone . ')';

            $pcre = '/(?:' . $optional_fws . $day_name . $optional_fws . ',)?' . $optional_fws . $day . $fws . $month . $fws . $year . $fws . $hour . $optional_fws . ':' . $optional_fws . $minute . '(?:' . $optional_fws . ':' . $optional_fws . $second . ')?' . $fws . $zone . '/i';

        }

        if (preg_match($pcre, $this->remove_rfc2822_comments($date), $match)) {

            /*

            Capturing subpatterns:

            1: Day name

            2: Day

            3: Month

            4: Year

            5: Hour

            6: Minute

            7: Second

            8: Timezone ±

            9: Timezone hours

            10: Timezone minutes

            11: Alphabetic timezone

            */

            // Find the month number

            $month = $this->month[strtolower($match[3])];

            // Numeric timezone

            if ($match[8] !== '') {

                $timezone = $match[9] * 3600;

                $timezone += $match[10] * 60;

                if ($match[8] === '-') {

                    $timezone = 0 - $timezone;

                }

            }

            // Character timezone

            elseif (isset($this->timezone[strtoupper($match[11])])) {

                $timezone = $this->timezone[strtoupper($match[11])];

            }

            // Assume everything else to be -0000

            else {

                $timezone = 0;

            }

            // Deal with 2/3 digit years

            if ($match[4] < 50) {

                $match[4] += 2000;

            } elseif ($match[4] < 1000) {

                $match[4] += 1900;

            }

            // Second is optional, if it is empty set it to zero

            if ($match[7] !== '') {

                $second = $match[7];

            } else {

                $second = 0;

            }

            return gmmktime(intval($match[5]), intval($match[6]), intval($second), intval($month), intval($match[2]), intval($match[4])) - $timezone;

        }

        return false;

    }

    /**

     * Parse RFC850's date format

     *

     * @access protected

     * @return int Timestamp

     */

    public function date_rfc850($date)

    {

        static $pcre;

        if (!$pcre) {

            $space = '[\x09\x20]+';

            $day_name = $this->day_pcre;

            $month = $this->month_pcre;

            $day = '([0-9]{1,2})';

            $year = $hour = $minute = $second = '([0-9]{2})';

            $zone = '([A-Z]{1,5})';

            $pcre = '/^' . $day_name . ',' . $space . $day . '-' . $month . '-' . $year . $space . $hour . ':' . $minute . ':' . $second . $space . $zone . '$/i';

        }

        if (preg_match($pcre, $date, $match)) {

            /*

            Capturing subpatterns:

            1: Day name

            2: Day

            3: Month

            4: Year

            5: Hour

            6: Minute

            7: Second

            8: Timezone

            */

            // Month

            $month = $this->month[strtolower($match[3])];

            // Character timezone

            if (isset($this->timezone[strtoupper($match[8])])) {

                $timezone = $this->timezone[strtoupper($match[8])];

            }

            // Assume everything else to be -0000

            else {

                $timezone = 0;

            }

            // Deal with 2 digit year

            if ($match[4] < 50) {

                $match[4] += 2000;

            } else {

                $match[4] += 1900;

            }

            return gmmktime($match[5], $match[6], $match[7], $month, $match[2], $match[4]) - $timezone;

        }

        return false;

    }

    /**

     * Parse C99's asctime()'s date format

     *

     * @access protected

     * @return int Timestamp

     */

    public function date_asctime($date)

    {

        static $pcre;

        if (!$pcre) {

            $space = '[\x09\x20]+';

            $wday_name = $this->day_pcre;

            $mon_name = $this->month_pcre;

            $day = '([0-9]{1,2})';

            $hour = $sec = $min = '([0-9]{2})';

            $year = '([0-9]{4})';

            $terminator = '\x0A?\x00?';

            $pcre = '/^' . $wday_name . $space . $mon_name . $space . $day . $space . $hour . ':' . $min . ':' . $sec . $space . $year . $terminator . '$/i';

        }

        if (preg_match($pcre, $date, $match)) {

            /*

            Capturing subpatterns:

            1: Day name

            2: Month

            3: Day

            4: Hour

            5: Minute

            6: Second

            7: Year

            */

            $month = $this->month[strtolower($match[2])];

            return gmmktime((int) $match[4], (int) $match[5], (int) $match[6], $month, (int) $match[3], (int) $match[7]);

        }

        return false;

    }

    /**

     * Parse dates using strtotime()

     *

     * @access protected

     * @return int Timestamp

     */

    public function date_strtotime($date)

    {

        $strtotime = strtotime($date);

        if ($strtotime === -1 || $strtotime === false) {

            return false;

        }

        return $strtotime;

    }

}

class_alias('SimplePie\Parse\Date', 'SimplePie_Parse_Date');