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a72e30d847
This brings SimplePie in sync with the most up to date version, 1.5.5. This update brings many bug fixes, small enhancements, and PHP compatibility fixes for newer versions of PHP. For a full list of changes, see https://github.com/simplepie/simplepie/blob/master/CHANGELOG.md#155-may-1-2020. Props dshanske, slushman, etruel, wpshades, dmenard, desrosj, hareesh-pillai, stevenkword, jrf, Ipstenu, johnbillion. Fixes #36669. Built from https://develop.svn.wordpress.org/trunk@47733 git-svn-id: http://core.svn.wordpress.org/trunk@47509 1a063a9b-81f0-0310-95a4-ce76da25c4cd
1026 lines
20 KiB
PHP
1026 lines
20 KiB
PHP
<?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, Sam 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, Sam Sneddon, Ryan McCue
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* @author Ryan Parman
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* @author Sam 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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'mo' => 1,
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'dienstag' => 2,
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'di' => 2,
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'mittwoch' => 3,
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'mi' => 3,
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'donnerstag' => 4,
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'do' => 4,
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'freitag' => 5,
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'fr' => 5,
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'samstag' => 6,
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'sa' => 6,
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'sonnabend' => 6,
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// AFAIK no short form for sonnabend
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'so' => 7,
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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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// Russian
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'Пн.' => 1,
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'Вт.' => 2,
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'Ср.' => 3,
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'Чт.' => 4,
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'Пт.' => 5,
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'Сб.' => 6,
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'Вс.' => 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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'jan' => 1,
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'februar' => 2,
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'feb' => 2,
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||
'märz' => 3,
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'mär' => 3,
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'april' => 4,
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||
'apr' => 4,
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'mai' => 5, // no short form for may
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'juni' => 6,
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'jun' => 6,
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||
'juli' => 7,
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||
'jul' => 7,
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||
'august' => 8,
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||
'aug' => 8,
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||
'september' => 9,
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||
'sep' => 9,
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||
'oktober' => 10,
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'okt' => 10,
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'november' => 11,
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'nov' => 11,
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'dezember' => 12,
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'dez' => 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,
|
||
'Μαώ' => 3,
|
||
'Απρ' => 4,
|
||
'Μάι' => 5,
|
||
'Μαϊ' => 5,
|
||
'Μαι' => 5,
|
||
'Ιούν' => 6,
|
||
'Ιον' => 6,
|
||
'Ιούλ' => 7,
|
||
'Ιολ' => 7,
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||
'Αύγ' => 8,
|
||
'Αυγ' => 8,
|
||
'Σεπ' => 9,
|
||
'Οκτ' => 10,
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||
'Νοέ' => 11,
|
||
'Δεκ' => 12,
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||
// Russian
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||
'Янв' => 1,
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||
'января' => 1,
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||
'Фев' => 2,
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||
'февраля' => 2,
|
||
'Мар' => 3,
|
||
'марта' => 3,
|
||
'Апр' => 4,
|
||
'апреля' => 4,
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||
'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
|
||
*/
|
||
var $timezone = array(
|
||
'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 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)$match[7] / (10 ** strlen($match[7])));
|
||
|
||
return gmmktime($match[4], $match[5], $second, $match[2], $match[3], $match[1]) - $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
|
||
{
|
||
$second = 0;
|
||
}
|
||
|
||
return gmmktime($match[5], $match[6], $second, $month, $match[2], $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($match[4], $match[5], $match[6], $month, $match[3], $match[7]);
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
/**
|
||
* Parse dates using strtotime()
|
||
*
|
||
* @access protected
|
||
* @return int Timestamp
|
||
*/
|
||
public function date_strtotime($date)
|
||
{
|
||
$strtotime = strtotime($date);
|
||
if ($strtotime === -1 || $strtotime === false)
|
||
{
|
||
return false;
|
||
}
|
||
|
||
return $strtotime;
|
||
}
|
||
}
|