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<?php
/*
* This file is part of the eluceo/iCal package.
*
* (c) Markus Poerschke <markus@eluceo.de>
*
* This source file is subject to the MIT license that is bundled
* with this source code in the file LICENSE.
*/
namespace Eluceo\iCal\Util;
class DateUtil
{
public static function getDefaultParams(\DateTimeInterface $dateTime = null, $noTime = false, $useTimezone = false, $timezoneString = '')
{
$params = [];
if ($useTimezone && $noTime === false) {
$timeZone = $timezoneString === '' ? $dateTime->getTimezone()->getName() : $timezoneString;
$params['TZID'] = $timeZone;
}
if ($noTime) {
$params['VALUE'] = 'DATE';
}
return $params;
}
/**
* Returns a formatted date string.
*
* @param \DateTimeInterface|null $dateTime The DateTime object
* @param bool $noTime Indicates if the time will be added
* @param bool $useTimezone
* @param bool $useUtc
*
* @return mixed
*/
public static function getDateString(\DateTimeInterface $dateTime = null, $noTime = false, $useTimezone = false, $useUtc = false)
{
if (empty($dateTime)) {
$dateTime = new \DateTimeImmutable();
}
// Only convert the DateTime to UTC if there is a time present. For date-only the
// timezone is meaningless and converting it might shift it to the wrong date.
// Do not convert DateTime to UTC if a timezone it specified, as it should be local time.
if (!$noTime && $useUtc && !$useTimezone) {
$dateTime = clone $dateTime;
$dateTime = $dateTime->setTimezone(new \DateTimeZone('UTC'));
}
return $dateTime->format(self::getDateFormat($noTime, $useTimezone, $useUtc));
}
/**
* Returns the date format that can be passed to DateTime::format().
*
* @param bool $noTime Indicates if the time will be added
* @param bool $useTimezone
* @param bool $useUtc
*
* @return string
*/
public static function getDateFormat($noTime = false, $useTimezone = false, $useUtc = false)
{
// Do not use UTC time (Z) if timezone support is enabled.
if ($useTimezone || !$useUtc) {
return $noTime ? 'Ymd' : 'Ymd\THis';
}
return $noTime ? 'Ymd' : 'Ymd\THis\Z';
}
}