root / drupal7 / sites / all / libraries / simplepie / library / SimplePie / Parse / Date.php @ 41cc1b08
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<?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) 2004-2012, 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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* @version 1.3.1
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* @copyright 2004-2012 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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/**
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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' => 8, |
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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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/**
|
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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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'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, |
| 345 |
'CVT' => -3600, |
| 346 |
'CXT' => 25200, |
| 347 |
'DAVT' => 25200, |
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'DTAT' => 36000, |
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'EADT' => -18000, |
| 350 |
'EAST' => -21600, |
| 351 |
'EAT' => 10800, |
| 352 |
'ECT' => -18000, |
| 353 |
'EDT' => -14400, |
| 354 |
'EEST' => 10800, |
| 355 |
'EET' => 7200, |
| 356 |
'EGT' => -3600, |
| 357 |
'EKST' => 21600, |
| 358 |
'EST' => -18000, |
| 359 |
'FJT' => 43200, |
| 360 |
'FKDT' => -10800, |
| 361 |
'FKST' => -14400, |
| 362 |
'FNT' => -7200, |
| 363 |
'GALT' => -21600, |
| 364 |
'GEDT' => 14400, |
| 365 |
'GEST' => 10800, |
| 366 |
'GFT' => -10800, |
| 367 |
'GILT' => 43200, |
| 368 |
'GIT' => -32400, |
| 369 |
'GST' => 14400, |
| 370 |
'GST' => -7200, |
| 371 |
'GYT' => -14400, |
| 372 |
'HAA' => -10800, |
| 373 |
'HAC' => -18000, |
| 374 |
'HADT' => -32400, |
| 375 |
'HAE' => -14400, |
| 376 |
'HAP' => -25200, |
| 377 |
'HAR' => -21600, |
| 378 |
'HAST' => -36000, |
| 379 |
'HAT' => -9000, |
| 380 |
'HAY' => -28800, |
| 381 |
'HKST' => 28800, |
| 382 |
'HMT' => 18000, |
| 383 |
'HNA' => -14400, |
| 384 |
'HNC' => -21600, |
| 385 |
'HNE' => -18000, |
| 386 |
'HNP' => -28800, |
| 387 |
'HNR' => -25200, |
| 388 |
'HNT' => -12600, |
| 389 |
'HNY' => -32400, |
| 390 |
'IRDT' => 16200, |
| 391 |
'IRKST' => 32400, |
| 392 |
'IRKT' => 28800, |
| 393 |
'IRST' => 12600, |
| 394 |
'JFDT' => -10800, |
| 395 |
'JFST' => -14400, |
| 396 |
'JST' => 32400, |
| 397 |
'KGST' => 21600, |
| 398 |
'KGT' => 18000, |
| 399 |
'KOST' => 39600, |
| 400 |
'KOVST' => 28800, |
| 401 |
'KOVT' => 25200, |
| 402 |
'KRAST' => 28800, |
| 403 |
'KRAT' => 25200, |
| 404 |
'KST' => 32400, |
| 405 |
'LHDT' => 39600, |
| 406 |
'LHST' => 37800, |
| 407 |
'LINT' => 50400, |
| 408 |
'LKT' => 21600, |
| 409 |
'MAGST' => 43200, |
| 410 |
'MAGT' => 39600, |
| 411 |
'MAWT' => 21600, |
| 412 |
'MDT' => -21600, |
| 413 |
'MESZ' => 7200, |
| 414 |
'MEZ' => 3600, |
| 415 |
'MHT' => 43200, |
| 416 |
'MIT' => -34200, |
| 417 |
'MNST' => 32400, |
| 418 |
'MSDT' => 14400, |
| 419 |
'MSST' => 10800, |
| 420 |
'MST' => -25200, |
| 421 |
'MUT' => 14400, |
| 422 |
'MVT' => 18000, |
| 423 |
'MYT' => 28800, |
| 424 |
'NCT' => 39600, |
| 425 |
'NDT' => -9000, |
| 426 |
'NFT' => 41400, |
| 427 |
'NMIT' => 36000, |
| 428 |
'NOVST' => 25200, |
| 429 |
'NOVT' => 21600, |
| 430 |
'NPT' => 20700, |
| 431 |
'NRT' => 43200, |
| 432 |
'NST' => -12600, |
| 433 |
'NUT' => -39600, |
| 434 |
'NZDT' => 46800, |
| 435 |
'NZST' => 43200, |
| 436 |
'OMSST' => 25200, |
| 437 |
'OMST' => 21600, |
| 438 |
'PDT' => -25200, |
| 439 |
'PET' => -18000, |
| 440 |
'PETST' => 46800, |
| 441 |
'PETT' => 43200, |
| 442 |
'PGT' => 36000, |
| 443 |
'PHOT' => 46800, |
| 444 |
'PHT' => 28800, |
| 445 |
'PKT' => 18000, |
| 446 |
'PMDT' => -7200, |
| 447 |
'PMST' => -10800, |
| 448 |
'PONT' => 39600, |
| 449 |
'PST' => -28800, |
| 450 |
'PWT' => 32400, |
| 451 |
'PYST' => -10800, |
| 452 |
'PYT' => -14400, |
| 453 |
'RET' => 14400, |
| 454 |
'ROTT' => -10800, |
| 455 |
'SAMST' => 18000, |
| 456 |
'SAMT' => 14400, |
| 457 |
'SAST' => 7200, |
| 458 |
'SBT' => 39600, |
| 459 |
'SCDT' => 46800, |
| 460 |
'SCST' => 43200, |
| 461 |
'SCT' => 14400, |
| 462 |
'SEST' => 3600, |
| 463 |
'SGT' => 28800, |
| 464 |
'SIT' => 28800, |
| 465 |
'SRT' => -10800, |
| 466 |
'SST' => -39600, |
| 467 |
'SYST' => 10800, |
| 468 |
'SYT' => 7200, |
| 469 |
'TFT' => 18000, |
| 470 |
'THAT' => -36000, |
| 471 |
'TJT' => 18000, |
| 472 |
'TKT' => -36000, |
| 473 |
'TMT' => 18000, |
| 474 |
'TOT' => 46800, |
| 475 |
'TPT' => 32400, |
| 476 |
'TRUT' => 36000, |
| 477 |
'TVT' => 43200, |
| 478 |
'TWT' => 28800, |
| 479 |
'UYST' => -7200, |
| 480 |
'UYT' => -10800, |
| 481 |
'UZT' => 18000, |
| 482 |
'VET' => -14400, |
| 483 |
'VLAST' => 39600, |
| 484 |
'VLAT' => 36000, |
| 485 |
'VOST' => 21600, |
| 486 |
'VUT' => 39600, |
| 487 |
'WAST' => 7200, |
| 488 |
'WAT' => 3600, |
| 489 |
'WDT' => 32400, |
| 490 |
'WEST' => 3600, |
| 491 |
'WFT' => 43200, |
| 492 |
'WIB' => 25200, |
| 493 |
'WIT' => 32400, |
| 494 |
'WITA' => 28800, |
| 495 |
'WKST' => 18000, |
| 496 |
'WST' => 28800, |
| 497 |
'YAKST' => 36000, |
| 498 |
'YAKT' => 32400, |
| 499 |
'YAPT' => 36000, |
| 500 |
'YEKST' => 21600, |
| 501 |
'YEKT' => 18000, |
| 502 |
); |
| 503 |
|
| 504 |
/**
|
| 505 |
* Cached PCRE for SimplePie_Parse_Date::$day
|
| 506 |
*
|
| 507 |
* @access protected
|
| 508 |
* @var string
|
| 509 |
*/
|
| 510 |
var $day_pcre; |
| 511 |
|
| 512 |
/**
|
| 513 |
* Cached PCRE for SimplePie_Parse_Date::$month
|
| 514 |
*
|
| 515 |
* @access protected
|
| 516 |
* @var string
|
| 517 |
*/
|
| 518 |
var $month_pcre; |
| 519 |
|
| 520 |
/**
|
| 521 |
* Array of user-added callback methods
|
| 522 |
*
|
| 523 |
* @access private
|
| 524 |
* @var array
|
| 525 |
*/
|
| 526 |
var $built_in = array(); |
| 527 |
|
| 528 |
/**
|
| 529 |
* Array of user-added callback methods
|
| 530 |
*
|
| 531 |
* @access private
|
| 532 |
* @var array
|
| 533 |
*/
|
| 534 |
var $user = array(); |
| 535 |
|
| 536 |
/**
|
| 537 |
* Create new SimplePie_Parse_Date object, and set self::day_pcre,
|
| 538 |
* self::month_pcre, and self::built_in
|
| 539 |
*
|
| 540 |
* @access private
|
| 541 |
*/
|
| 542 |
public function __construct() |
| 543 |
{
|
| 544 |
$this->day_pcre = '(' . implode(array_keys($this->day), '|') . ')'; |
| 545 |
$this->month_pcre = '(' . implode(array_keys($this->month), '|') . ')'; |
| 546 |
|
| 547 |
static $cache; |
| 548 |
if (!isset($cache[get_class($this)])) |
| 549 |
{
|
| 550 |
$all_methods = get_class_methods($this); |
| 551 |
|
| 552 |
foreach ($all_methods as $method) |
| 553 |
{
|
| 554 |
if (strtolower(substr($method, 0, 5)) === 'date_') |
| 555 |
{
|
| 556 |
$cache[get_class($this)][] = $method; |
| 557 |
} |
| 558 |
} |
| 559 |
} |
| 560 |
|
| 561 |
foreach ($cache[get_class($this)] as $method) |
| 562 |
{
|
| 563 |
$this->built_in[] = $method; |
| 564 |
} |
| 565 |
} |
| 566 |
|
| 567 |
/**
|
| 568 |
* Get the object
|
| 569 |
*
|
| 570 |
* @access public
|
| 571 |
*/
|
| 572 |
public static function get() |
| 573 |
{
|
| 574 |
static $object; |
| 575 |
if (!$object) |
| 576 |
{
|
| 577 |
$object = new SimplePie_Parse_Date; |
| 578 |
} |
| 579 |
return $object; |
| 580 |
} |
| 581 |
|
| 582 |
/**
|
| 583 |
* Parse a date
|
| 584 |
*
|
| 585 |
* @final
|
| 586 |
* @access public
|
| 587 |
* @param string $date Date to parse
|
| 588 |
* @return int Timestamp corresponding to date string, or false on failure
|
| 589 |
*/
|
| 590 |
public function parse($date) |
| 591 |
{
|
| 592 |
foreach ($this->user as $method) |
| 593 |
{
|
| 594 |
if (($returned = call_user_func($method, $date)) !== false) |
| 595 |
{
|
| 596 |
return $returned; |
| 597 |
} |
| 598 |
} |
| 599 |
|
| 600 |
foreach ($this->built_in as $method) |
| 601 |
{
|
| 602 |
if (($returned = call_user_func(array($this, $method), $date)) !== false) |
| 603 |
{
|
| 604 |
return $returned; |
| 605 |
} |
| 606 |
} |
| 607 |
|
| 608 |
return false; |
| 609 |
} |
| 610 |
|
| 611 |
/**
|
| 612 |
* Add a callback method to parse a date
|
| 613 |
*
|
| 614 |
* @final
|
| 615 |
* @access public
|
| 616 |
* @param callback $callback
|
| 617 |
*/
|
| 618 |
public function add_callback($callback) |
| 619 |
{
|
| 620 |
if (is_callable($callback)) |
| 621 |
{
|
| 622 |
$this->user[] = $callback; |
| 623 |
} |
| 624 |
else
|
| 625 |
{
|
| 626 |
trigger_error('User-supplied function must be a valid callback', E_USER_WARNING); |
| 627 |
} |
| 628 |
} |
| 629 |
|
| 630 |
/**
|
| 631 |
* Parse a superset of W3C-DTF (allows hyphens and colons to be omitted, as
|
| 632 |
* well as allowing any of upper or lower case "T", horizontal tabs, or
|
| 633 |
* spaces to be used as the time seperator (including more than one))
|
| 634 |
*
|
| 635 |
* @access protected
|
| 636 |
* @return int Timestamp
|
| 637 |
*/
|
| 638 |
public function date_w3cdtf($date) |
| 639 |
{
|
| 640 |
static $pcre; |
| 641 |
if (!$pcre) |
| 642 |
{
|
| 643 |
$year = '([0-9]{4})'; |
| 644 |
$month = $day = $hour = $minute = $second = '([0-9]{2})'; |
| 645 |
$decimal = '([0-9]*)'; |
| 646 |
$zone = '(?:(Z)|([+\-])([0-9]{1,2}):?([0-9]{1,2}))'; |
| 647 |
$pcre = '/^' . $year . '(?:-?' . $month . '(?:-?' . $day . '(?:[Tt\x09\x20]+' . $hour . '(?::?' . $minute . '(?::?' . $second . '(?:.' . $decimal . ')?)?)?' . $zone . ')?)?)?$/'; |
| 648 |
} |
| 649 |
if (preg_match($pcre, $date, $match)) |
| 650 |
{
|
| 651 |
/*
|
| 652 |
Capturing subpatterns:
|
| 653 |
1: Year
|
| 654 |
2: Month
|
| 655 |
3: Day
|
| 656 |
4: Hour
|
| 657 |
5: Minute
|
| 658 |
6: Second
|
| 659 |
7: Decimal fraction of a second
|
| 660 |
8: Zulu
|
| 661 |
9: Timezone ±
|
| 662 |
10: Timezone hours
|
| 663 |
11: Timezone minutes
|
| 664 |
*/
|
| 665 |
|
| 666 |
// Fill in empty matches
|
| 667 |
for ($i = count($match); $i <= 3; $i++) |
| 668 |
{
|
| 669 |
$match[$i] = '1'; |
| 670 |
} |
| 671 |
|
| 672 |
for ($i = count($match); $i <= 7; $i++) |
| 673 |
{
|
| 674 |
$match[$i] = '0'; |
| 675 |
} |
| 676 |
|
| 677 |
// Numeric timezone
|
| 678 |
if (isset($match[9]) && $match[9] !== '') |
| 679 |
{
|
| 680 |
$timezone = $match[10] * 3600; |
| 681 |
$timezone += $match[11] * 60; |
| 682 |
if ($match[9] === '-') |
| 683 |
{
|
| 684 |
$timezone = 0 - $timezone; |
| 685 |
} |
| 686 |
} |
| 687 |
else
|
| 688 |
{
|
| 689 |
$timezone = 0; |
| 690 |
} |
| 691 |
|
| 692 |
// Convert the number of seconds to an integer, taking decimals into account
|
| 693 |
$second = round($match[6] + $match[7] / pow(10, strlen($match[7]))); |
| 694 |
|
| 695 |
return gmmktime($match[4], $match[5], $second, $match[2], $match[3], $match[1]) - $timezone; |
| 696 |
} |
| 697 |
else
|
| 698 |
{
|
| 699 |
return false; |
| 700 |
} |
| 701 |
} |
| 702 |
|
| 703 |
/**
|
| 704 |
* Remove RFC822 comments
|
| 705 |
*
|
| 706 |
* @access protected
|
| 707 |
* @param string $data Data to strip comments from
|
| 708 |
* @return string Comment stripped string
|
| 709 |
*/
|
| 710 |
public function remove_rfc2822_comments($string) |
| 711 |
{
|
| 712 |
$string = (string) $string; |
| 713 |
$position = 0; |
| 714 |
$length = strlen($string); |
| 715 |
$depth = 0; |
| 716 |
|
| 717 |
$output = ''; |
| 718 |
|
| 719 |
while ($position < $length && ($pos = strpos($string, '(', $position)) !== false) |
| 720 |
{
|
| 721 |
$output .= substr($string, $position, $pos - $position); |
| 722 |
$position = $pos + 1; |
| 723 |
if ($string[$pos - 1] !== '\\') |
| 724 |
{
|
| 725 |
$depth++;
|
| 726 |
while ($depth && $position < $length) |
| 727 |
{
|
| 728 |
$position += strcspn($string, '()', $position); |
| 729 |
if ($string[$position - 1] === '\\') |
| 730 |
{
|
| 731 |
$position++;
|
| 732 |
continue;
|
| 733 |
} |
| 734 |
elseif (isset($string[$position])) |
| 735 |
{
|
| 736 |
switch ($string[$position]) |
| 737 |
{
|
| 738 |
case '(': |
| 739 |
$depth++;
|
| 740 |
break;
|
| 741 |
|
| 742 |
case ')': |
| 743 |
$depth--;
|
| 744 |
break;
|
| 745 |
} |
| 746 |
$position++;
|
| 747 |
} |
| 748 |
else
|
| 749 |
{
|
| 750 |
break;
|
| 751 |
} |
| 752 |
} |
| 753 |
} |
| 754 |
else
|
| 755 |
{
|
| 756 |
$output .= '('; |
| 757 |
} |
| 758 |
} |
| 759 |
$output .= substr($string, $position); |
| 760 |
|
| 761 |
return $output; |
| 762 |
} |
| 763 |
|
| 764 |
/**
|
| 765 |
* Parse RFC2822's date format
|
| 766 |
*
|
| 767 |
* @access protected
|
| 768 |
* @return int Timestamp
|
| 769 |
*/
|
| 770 |
public function date_rfc2822($date) |
| 771 |
{
|
| 772 |
static $pcre; |
| 773 |
if (!$pcre) |
| 774 |
{
|
| 775 |
$wsp = '[\x09\x20]'; |
| 776 |
$fws = '(?:' . $wsp . '+|' . $wsp . '*(?:\x0D\x0A' . $wsp . '+)+)'; |
| 777 |
$optional_fws = $fws . '?'; |
| 778 |
$day_name = $this->day_pcre; |
| 779 |
$month = $this->month_pcre; |
| 780 |
$day = '([0-9]{1,2})'; |
| 781 |
$hour = $minute = $second = '([0-9]{2})'; |
| 782 |
$year = '([0-9]{2,4})'; |
| 783 |
$num_zone = '([+\-])([0-9]{2})([0-9]{2})'; |
| 784 |
$character_zone = '([A-Z]{1,5})'; |
| 785 |
$zone = '(?:' . $num_zone . '|' . $character_zone . ')'; |
| 786 |
$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 . $zone . '/i'; |
| 787 |
} |
| 788 |
if (preg_match($pcre, $this->remove_rfc2822_comments($date), $match)) |
| 789 |
{
|
| 790 |
/*
|
| 791 |
Capturing subpatterns:
|
| 792 |
1: Day name
|
| 793 |
2: Day
|
| 794 |
3: Month
|
| 795 |
4: Year
|
| 796 |
5: Hour
|
| 797 |
6: Minute
|
| 798 |
7: Second
|
| 799 |
8: Timezone ±
|
| 800 |
9: Timezone hours
|
| 801 |
10: Timezone minutes
|
| 802 |
11: Alphabetic timezone
|
| 803 |
*/
|
| 804 |
|
| 805 |
// Find the month number
|
| 806 |
$month = $this->month[strtolower($match[3])]; |
| 807 |
|
| 808 |
// Numeric timezone
|
| 809 |
if ($match[8] !== '') |
| 810 |
{
|
| 811 |
$timezone = $match[9] * 3600; |
| 812 |
$timezone += $match[10] * 60; |
| 813 |
if ($match[8] === '-') |
| 814 |
{
|
| 815 |
$timezone = 0 - $timezone; |
| 816 |
} |
| 817 |
} |
| 818 |
// Character timezone
|
| 819 |
elseif (isset($this->timezone[strtoupper($match[11])])) |
| 820 |
{
|
| 821 |
$timezone = $this->timezone[strtoupper($match[11])]; |
| 822 |
} |
| 823 |
// Assume everything else to be -0000
|
| 824 |
else
|
| 825 |
{
|
| 826 |
$timezone = 0; |
| 827 |
} |
| 828 |
|
| 829 |
// Deal with 2/3 digit years
|
| 830 |
if ($match[4] < 50) |
| 831 |
{
|
| 832 |
$match[4] += 2000; |
| 833 |
} |
| 834 |
elseif ($match[4] < 1000) |
| 835 |
{
|
| 836 |
$match[4] += 1900; |
| 837 |
} |
| 838 |
|
| 839 |
// Second is optional, if it is empty set it to zero
|
| 840 |
if ($match[7] !== '') |
| 841 |
{
|
| 842 |
$second = $match[7]; |
| 843 |
} |
| 844 |
else
|
| 845 |
{
|
| 846 |
$second = 0; |
| 847 |
} |
| 848 |
|
| 849 |
return gmmktime($match[5], $match[6], $second, $month, $match[2], $match[4]) - $timezone; |
| 850 |
} |
| 851 |
else
|
| 852 |
{
|
| 853 |
return false; |
| 854 |
} |
| 855 |
} |
| 856 |
|
| 857 |
/**
|
| 858 |
* Parse RFC850's date format
|
| 859 |
*
|
| 860 |
* @access protected
|
| 861 |
* @return int Timestamp
|
| 862 |
*/
|
| 863 |
public function date_rfc850($date) |
| 864 |
{
|
| 865 |
static $pcre; |
| 866 |
if (!$pcre) |
| 867 |
{
|
| 868 |
$space = '[\x09\x20]+'; |
| 869 |
$day_name = $this->day_pcre; |
| 870 |
$month = $this->month_pcre; |
| 871 |
$day = '([0-9]{1,2})'; |
| 872 |
$year = $hour = $minute = $second = '([0-9]{2})'; |
| 873 |
$zone = '([A-Z]{1,5})'; |
| 874 |
$pcre = '/^' . $day_name . ',' . $space . $day . '-' . $month . '-' . $year . $space . $hour . ':' . $minute . ':' . $second . $space . $zone . '$/i'; |
| 875 |
} |
| 876 |
if (preg_match($pcre, $date, $match)) |
| 877 |
{
|
| 878 |
/*
|
| 879 |
Capturing subpatterns:
|
| 880 |
1: Day name
|
| 881 |
2: Day
|
| 882 |
3: Month
|
| 883 |
4: Year
|
| 884 |
5: Hour
|
| 885 |
6: Minute
|
| 886 |
7: Second
|
| 887 |
8: Timezone
|
| 888 |
*/
|
| 889 |
|
| 890 |
// Month
|
| 891 |
$month = $this->month[strtolower($match[3])]; |
| 892 |
|
| 893 |
// Character timezone
|
| 894 |
if (isset($this->timezone[strtoupper($match[8])])) |
| 895 |
{
|
| 896 |
$timezone = $this->timezone[strtoupper($match[8])]; |
| 897 |
} |
| 898 |
// Assume everything else to be -0000
|
| 899 |
else
|
| 900 |
{
|
| 901 |
$timezone = 0; |
| 902 |
} |
| 903 |
|
| 904 |
// Deal with 2 digit year
|
| 905 |
if ($match[4] < 50) |
| 906 |
{
|
| 907 |
$match[4] += 2000; |
| 908 |
} |
| 909 |
else
|
| 910 |
{
|
| 911 |
$match[4] += 1900; |
| 912 |
} |
| 913 |
|
| 914 |
return gmmktime($match[5], $match[6], $match[7], $month, $match[2], $match[4]) - $timezone; |
| 915 |
} |
| 916 |
else
|
| 917 |
{
|
| 918 |
return false; |
| 919 |
} |
| 920 |
} |
| 921 |
|
| 922 |
/**
|
| 923 |
* Parse C99's asctime()'s date format
|
| 924 |
*
|
| 925 |
* @access protected
|
| 926 |
* @return int Timestamp
|
| 927 |
*/
|
| 928 |
public function date_asctime($date) |
| 929 |
{
|
| 930 |
static $pcre; |
| 931 |
if (!$pcre) |
| 932 |
{
|
| 933 |
$space = '[\x09\x20]+'; |
| 934 |
$wday_name = $this->day_pcre; |
| 935 |
$mon_name = $this->month_pcre; |
| 936 |
$day = '([0-9]{1,2})'; |
| 937 |
$hour = $sec = $min = '([0-9]{2})'; |
| 938 |
$year = '([0-9]{4})'; |
| 939 |
$terminator = '\x0A?\x00?'; |
| 940 |
$pcre = '/^' . $wday_name . $space . $mon_name . $space . $day . $space . $hour . ':' . $min . ':' . $sec . $space . $year . $terminator . '$/i'; |
| 941 |
} |
| 942 |
if (preg_match($pcre, $date, $match)) |
| 943 |
{
|
| 944 |
/*
|
| 945 |
Capturing subpatterns:
|
| 946 |
1: Day name
|
| 947 |
2: Month
|
| 948 |
3: Day
|
| 949 |
4: Hour
|
| 950 |
5: Minute
|
| 951 |
6: Second
|
| 952 |
7: Year
|
| 953 |
*/
|
| 954 |
|
| 955 |
$month = $this->month[strtolower($match[2])]; |
| 956 |
return gmmktime($match[4], $match[5], $match[6], $month, $match[3], $match[7]); |
| 957 |
} |
| 958 |
else
|
| 959 |
{
|
| 960 |
return false; |
| 961 |
} |
| 962 |
} |
| 963 |
|
| 964 |
/**
|
| 965 |
* Parse dates using strtotime()
|
| 966 |
*
|
| 967 |
* @access protected
|
| 968 |
* @return int Timestamp
|
| 969 |
*/
|
| 970 |
public function date_strtotime($date) |
| 971 |
{
|
| 972 |
$strtotime = strtotime($date); |
| 973 |
if ($strtotime === -1 || $strtotime === false) |
| 974 |
{
|
| 975 |
return false; |
| 976 |
} |
| 977 |
else
|
| 978 |
{
|
| 979 |
return $strtotime; |
| 980 |
} |
| 981 |
} |
| 982 |
} |
| 983 |
|