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983 lines
19 KiB
983 lines
19 KiB
<?php
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/**
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* SimplePie
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*
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* A PHP-Based RSS and Atom Feed Framework.
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* Takes the hard work out of managing a complete RSS/Atom solution.
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*
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* Copyright (c) 2004-2016, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are
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* permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* * Neither the name of the SimplePie Team nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
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* AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* @package SimplePie
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* @copyright 2004-2016 Ryan Parman, Geoffrey Sneddon, Ryan McCue
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* @author Ryan Parman
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* @author Geoffrey Sneddon
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* @author Ryan McCue
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* @link http://simplepie.org/ SimplePie
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* @license http://www.opensource.org/licenses/bsd-license.php BSD License
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*/
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/**
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* Date Parser
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*
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* @package SimplePie
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* @subpackage Parsing
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*/
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class SimplePie_Parse_Date
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{
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/**
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* Input data
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*
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* @access protected
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* @var string
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*/
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var $date;
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/**
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* List of days, calendar day name => ordinal day number in the week
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*
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* @access protected
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* @var array
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*/
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var $day = array(
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// English
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'mon' => 1,
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'monday' => 1,
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'tue' => 2,
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'tuesday' => 2,
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'wed' => 3,
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'wednesday' => 3,
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'thu' => 4,
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'thursday' => 4,
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'fri' => 5,
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'friday' => 5,
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'sat' => 6,
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'saturday' => 6,
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'sun' => 7,
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'sunday' => 7,
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// Dutch
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'maandag' => 1,
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'dinsdag' => 2,
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'woensdag' => 3,
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'donderdag' => 4,
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'vrijdag' => 5,
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'zaterdag' => 6,
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'zondag' => 7,
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// French
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'lundi' => 1,
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'mardi' => 2,
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'mercredi' => 3,
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'jeudi' => 4,
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'vendredi' => 5,
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'samedi' => 6,
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'dimanche' => 7,
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// German
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'montag' => 1,
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'dienstag' => 2,
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'mittwoch' => 3,
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'donnerstag' => 4,
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'freitag' => 5,
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'samstag' => 6,
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'sonnabend' => 6,
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'sonntag' => 7,
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// Italian
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'lunedì' => 1,
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'martedì' => 2,
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'mercoledì' => 3,
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'giovedì' => 4,
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'venerdì' => 5,
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'sabato' => 6,
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'domenica' => 7,
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// Spanish
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'lunes' => 1,
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'martes' => 2,
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'miércoles' => 3,
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'jueves' => 4,
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'viernes' => 5,
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'sábado' => 6,
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'domingo' => 7,
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// Finnish
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'maanantai' => 1,
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'tiistai' => 2,
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'keskiviikko' => 3,
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'torstai' => 4,
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'perjantai' => 5,
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'lauantai' => 6,
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'sunnuntai' => 7,
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// Hungarian
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'hétfő' => 1,
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'kedd' => 2,
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'szerda' => 3,
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'csütörtok' => 4,
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'péntek' => 5,
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'szombat' => 6,
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'vasárnap' => 7,
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// Greek
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'Δευ' => 1,
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'Τρι' => 2,
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'Τετ' => 3,
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'Πεμ' => 4,
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'Παρ' => 5,
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'Σαβ' => 6,
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'Κυρ' => 7,
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);
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/**
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* List of months, calendar month name => calendar month number
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*
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* @access protected
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* @var array
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*/
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var $month = array(
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// English
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'jan' => 1,
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'january' => 1,
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'feb' => 2,
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'february' => 2,
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'mar' => 3,
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'march' => 3,
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'apr' => 4,
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'april' => 4,
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'may' => 5,
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// No long form of May
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'jun' => 6,
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'june' => 6,
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'jul' => 7,
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'july' => 7,
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'aug' => 8,
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'august' => 8,
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'sep' => 9,
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'september' => 9,
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'oct' => 10,
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'october' => 10,
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'nov' => 11,
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'november' => 11,
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'dec' => 12,
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'december' => 12,
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// Dutch
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'januari' => 1,
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'februari' => 2,
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'maart' => 3,
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'april' => 4,
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'mei' => 5,
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'juni' => 6,
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'juli' => 7,
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'augustus' => 8,
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'september' => 9,
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'oktober' => 10,
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'november' => 11,
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'december' => 12,
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// French
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'janvier' => 1,
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'février' => 2,
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'mars' => 3,
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'avril' => 4,
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'mai' => 5,
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'juin' => 6,
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'juillet' => 7,
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'août' => 8,
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'septembre' => 9,
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'octobre' => 10,
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'novembre' => 11,
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'décembre' => 12,
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// German
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'januar' => 1,
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'februar' => 2,
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'märz' => 3,
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'april' => 4,
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'mai' => 5,
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'juni' => 6,
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'juli' => 7,
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'august' => 8,
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'september' => 9,
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'oktober' => 10,
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'november' => 11,
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'dezember' => 12,
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// Italian
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'gennaio' => 1,
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'febbraio' => 2,
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'marzo' => 3,
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'aprile' => 4,
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'maggio' => 5,
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'giugno' => 6,
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'luglio' => 7,
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'agosto' => 8,
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'settembre' => 9,
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'ottobre' => 10,
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'novembre' => 11,
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'dicembre' => 12,
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// Spanish
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'enero' => 1,
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'febrero' => 2,
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'marzo' => 3,
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'abril' => 4,
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'mayo' => 5,
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'junio' => 6,
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'julio' => 7,
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'agosto' => 8,
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'septiembre' => 9,
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'setiembre' => 9,
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'octubre' => 10,
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'noviembre' => 11,
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'diciembre' => 12,
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// Finnish
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'tammikuu' => 1,
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'helmikuu' => 2,
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'maaliskuu' => 3,
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'huhtikuu' => 4,
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'toukokuu' => 5,
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'kesäkuu' => 6,
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'heinäkuu' => 7,
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'elokuu' => 8,
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'suuskuu' => 9,
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'lokakuu' => 10,
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'marras' => 11,
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'joulukuu' => 12,
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// Hungarian
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'január' => 1,
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'február' => 2,
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'március' => 3,
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'április' => 4,
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'május' => 5,
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'június' => 6,
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'július' => 7,
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'augusztus' => 8,
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'szeptember' => 9,
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'október' => 10,
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'november' => 11,
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'december' => 12,
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// Greek
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'Ιαν' => 1,
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'Φεβ' => 2,
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'Μάώ' => 3,
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'Μαώ' => 3,
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'Απρ' => 4,
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'Μάι' => 5,
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'Μαϊ' => 5,
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'Μαι' => 5,
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'Ιούν' => 6,
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'Ιον' => 6,
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'Ιούλ' => 7,
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'Ιολ' => 7,
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'Αύγ' => 8,
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'Αυγ' => 8,
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'Σεπ' => 9,
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'Οκτ' => 10,
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'Νοέ' => 11,
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'Δεκ' => 12,
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);
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/**
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* List of timezones, abbreviation => offset from UTC
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*
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* @access protected
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* @var array
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*/
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var $timezone = array(
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'ACDT' => 37800,
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'ACIT' => 28800,
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'ACST' => 34200,
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'ACT' => -18000,
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'ACWDT' => 35100,
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'ACWST' => 31500,
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'AEDT' => 39600,
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'AEST' => 36000,
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'AFT' => 16200,
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'AKDT' => -28800,
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'AKST' => -32400,
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'AMDT' => 18000,
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'AMT' => -14400,
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'ANAST' => 46800,
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'ANAT' => 43200,
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'ART' => -10800,
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'AZOST' => -3600,
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'AZST' => 18000,
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'AZT' => 14400,
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'BIOT' => 21600,
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'BIT' => -43200,
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'BOT' => -14400,
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'BRST' => -7200,
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'BRT' => -10800,
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'BST' => 3600,
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'BTT' => 21600,
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'CAST' => 18000,
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'CAT' => 7200,
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'CCT' => 23400,
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'CDT' => -18000,
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'CEDT' => 7200,
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'CEST' => 7200,
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'CET' => 3600,
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'CGST' => -7200,
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'CGT' => -10800,
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'CHADT' => 49500,
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'CHAST' => 45900,
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'CIST' => -28800,
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'CKT' => -36000,
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'CLDT' => -10800,
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'CLST' => -14400,
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'COT' => -18000,
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'CST' => -21600,
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'CVT' => -3600,
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'CXT' => 25200,
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'DAVT' => 25200,
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'DTAT' => 36000,
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'EADT' => -18000,
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'EAST' => -21600,
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'EAT' => 10800,
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'ECT' => -18000,
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'EDT' => -14400,
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'EEST' => 10800,
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'EET' => 7200,
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'EGT' => -3600,
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'EKST' => 21600,
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'EST' => -18000,
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'FJT' => 43200,
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'FKDT' => -10800,
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'FKST' => -14400,
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'FNT' => -7200,
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'GALT' => -21600,
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'GEDT' => 14400,
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'GEST' => 10800,
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'GFT' => -10800,
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'GILT' => 43200,
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'GIT' => -32400,
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'GST' => 14400,
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'GST' => -7200,
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'GYT' => -14400,
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'HAA' => -10800,
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'HAC' => -18000,
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'HADT' => -32400,
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'HAE' => -14400,
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'HAP' => -25200,
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'HAR' => -21600,
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'HAST' => -36000,
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'HAT' => -9000,
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'HAY' => -28800,
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'HKST' => 28800,
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'HMT' => 18000,
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'HNA' => -14400,
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'HNC' => -21600,
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'HNE' => -18000,
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'HNP' => -28800,
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'HNR' => -25200,
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'HNT' => -12600,
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'HNY' => -32400,
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'IRDT' => 16200,
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'IRKST' => 32400,
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'IRKT' => 28800,
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'IRST' => 12600,
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'JFDT' => -10800,
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'JFST' => -14400,
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'JST' => 32400,
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'KGST' => 21600,
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'KGT' => 18000,
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'KOST' => 39600,
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'KOVST' => 28800,
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'KOVT' => 25200,
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'KRAST' => 28800,
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'KRAT' => 25200,
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'KST' => 32400,
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'LHDT' => 39600,
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'LHST' => 37800,
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'LINT' => 50400,
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'LKT' => 21600,
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'MAGST' => 43200,
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'MAGT' => 39600,
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'MAWT' => 21600,
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'MDT' => -21600,
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'MESZ' => 7200,
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'MEZ' => 3600,
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'MHT' => 43200,
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'MIT' => -34200,
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'MNST' => 32400,
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'MSDT' => 14400,
|
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'MSST' => 10800,
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'MST' => -25200,
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'MUT' => 14400,
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|
'MVT' => 18000,
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'MYT' => 28800,
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'NCT' => 39600,
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'NDT' => -9000,
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'NFT' => 41400,
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|
'NMIT' => 36000,
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'NOVST' => 25200,
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'NOVT' => 21600,
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'NPT' => 20700,
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'NRT' => 43200,
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'NST' => -12600,
|
|
'NUT' => -39600,
|
|
'NZDT' => 46800,
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'NZST' => 43200,
|
|
'OMSST' => 25200,
|
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'OMST' => 21600,
|
|
'PDT' => -25200,
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'PET' => -18000,
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'PETST' => 46800,
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|
'PETT' => 43200,
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|
'PGT' => 36000,
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'PHOT' => 46800,
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'PHT' => 28800,
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'PKT' => 18000,
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'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,
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|
'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,
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|
'VUT' => 39600,
|
|
'WAST' => 7200,
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|
'WAT' => 3600,
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|
'WDT' => 32400,
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'WEST' => 3600,
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'WFT' => 43200,
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'WIB' => 25200,
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'WIT' => 32400,
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'WITA' => 28800,
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|
'WKST' => 18000,
|
|
'WST' => 28800,
|
|
'YAKST' => 36000,
|
|
'YAKT' => 32400,
|
|
'YAPT' => 36000,
|
|
'YEKST' => 21600,
|
|
'YEKT' => 18000,
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);
|
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|
|
/**
|
|
* Cached PCRE for SimplePie_Parse_Date::$day
|
|
*
|
|
* @access protected
|
|
* @var string
|
|
*/
|
|
var $day_pcre;
|
|
|
|
/**
|
|
* Cached PCRE for SimplePie_Parse_Date::$month
|
|
*
|
|
* @access protected
|
|
* @var string
|
|
*/
|
|
var $month_pcre;
|
|
|
|
/**
|
|
* Array of user-added callback methods
|
|
*
|
|
* @access private
|
|
* @var array
|
|
*/
|
|
var $built_in = array();
|
|
|
|
/**
|
|
* Array of user-added callback methods
|
|
*
|
|
* @access private
|
|
* @var array
|
|
*/
|
|
var $user = array();
|
|
|
|
/**
|
|
* Create new SimplePie_Parse_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 SimplePie_Parse_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(array($this, $method), $date)) !== false)
|
|
{
|
|
return $returned;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Add a callback method to parse a date
|
|
*
|
|
* @final
|
|
* @access public
|
|
* @param callback $callback
|
|
*/
|
|
public function add_callback($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)
|
|
{
|
|
static $pcre;
|
|
if (!$pcre)
|
|
{
|
|
$year = '([0-9]{4})';
|
|
$month = $day = $hour = $minute = $second = '([0-9]{2})';
|
|
$decimal = '([0-9]*)';
|
|
$zone = '(?:(Z)|([+\-])([0-9]{1,2}):?([0-9]{1,2}))';
|
|
$pcre = '/^' . $year . '(?:-?' . $month . '(?:-?' . $day . '(?:[Tt\x09\x20]+' . $hour . '(?::?' . $minute . '(?::?' . $second . '(?:.' . $decimal . ')?)?)?' . $zone . ')?)?)?$/';
|
|
}
|
|
if (preg_match($pcre, $date, $match))
|
|
{
|
|
/*
|
|
Capturing subpatterns:
|
|
1: Year
|
|
2: Month
|
|
3: Day
|
|
4: Hour
|
|
5: Minute
|
|
6: Second
|
|
7: Decimal fraction of a second
|
|
8: Zulu
|
|
9: Timezone ±
|
|
10: Timezone hours
|
|
11: Timezone minutes
|
|
*/
|
|
|
|
// Fill in empty matches
|
|
for ($i = count($match); $i <= 3; $i++)
|
|
{
|
|
$match[$i] = '1';
|
|
}
|
|
|
|
for ($i = count($match); $i <= 7; $i++)
|
|
{
|
|
$match[$i] = '0';
|
|
}
|
|
|
|
// Numeric timezone
|
|
if (isset($match[9]) && $match[9] !== '')
|
|
{
|
|
$timezone = $match[10] * 3600;
|
|
$timezone += $match[11] * 60;
|
|
if ($match[9] === '-')
|
|
{
|
|
$timezone = 0 - $timezone;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
$timezone = 0;
|
|
}
|
|
|
|
// Convert the number of seconds to an integer, taking decimals into account
|
|
$second = round((int)$match[6] + (int)$match[7] / pow(10, strlen($match[7])));
|
|
|
|
return gmmktime($match[4], $match[5], $second, $match[2], $match[3], $match[1]) - $timezone;
|
|
}
|
|
else
|
|
{
|
|
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
|
|
{
|
|
$second = 0;
|
|
}
|
|
|
|
return gmmktime($match[5], $match[6], $second, $month, $match[2], $match[4]) - $timezone;
|
|
}
|
|
else
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Parse RFC850's date format
|
|
*
|
|
* @access protected
|
|
* @return int Timestamp
|
|
*/
|
|
public function date_rfc850($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]) - $timezone;
|
|
}
|
|
else
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Parse C99's asctime()'s date format
|
|
*
|
|
* @access protected
|
|
* @return int Timestamp
|
|
*/
|
|
public function date_asctime($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($match[4], $match[5], $match[6], $month, $match[3], $match[7]);
|
|
}
|
|
else
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Parse dates using strtotime()
|
|
*
|
|
* @access protected
|
|
* @return int Timestamp
|
|
*/
|
|
public function date_strtotime($date)
|
|
{
|
|
$strtotime = strtotime($date);
|
|
if ($strtotime === -1 || $strtotime === false)
|
|
{
|
|
return false;
|
|
}
|
|
else
|
|
{
|
|
return $strtotime;
|
|
}
|
|
}
|
|
}
|
|
|
|
|