<?php
/*
* This file is part of the PHPASN1 library.
*
* Copyright © Friedrich Große <friedrich.grosse@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace FG\ASN1;
use DateInterval;
use DateTime;
use DateTimeZone;
use Exception;
abstract class AbstractTime extends ASNObject
{
/** @var DateTime */
protected $value;
public function __construct($dateTime = null, $dateTimeZone = 'UTC')
{
if ($dateTime == null || is_string($dateTime)) {
$timeZone = new DateTimeZone($dateTimeZone);
$dateTimeObject = new DateTime($dateTime, $timeZone);
if ($dateTimeObject == false) {
$errorMessage = $this->getLastDateTimeErrors();
$className = Identifier::getName($this->getType());
throw new Exception(sprintf("Could not create %s from date time string '%s': %s", $className, $dateTime, $errorMessage));
}
$dateTime = $dateTimeObject;
} elseif (!$dateTime instanceof DateTime) {
throw new Exception('Invalid first argument for some instance of AbstractTime constructor');
}
$this->value = $dateTime;
}
public function getContent()
{
return $this->value;
}
protected function getLastDateTimeErrors()
{
$messages = '';
$lastErrors = DateTime::getLastErrors();
foreach ($lastErrors['errors'] as $errorMessage) {
$messages .= "{$errorMessage}, ";
}
return substr($messages, 0, -2);
}
public function __toString()
{
return $this->value->format("Y-m-d\tH:i:s");
}
protected static function extractTimeZoneData(&$binaryData, &$offsetIndex, DateTime $dateTime)
{
$sign = $binaryData[$offsetIndex++];
$timeOffsetHours = intval(substr($binaryData, $offsetIndex, 2));
$timeOffsetMinutes = intval(substr($binaryData, $offsetIndex + 2, 2));
$offsetIndex += 4;
$interval = new DateInterval("PT{$timeOffsetHours}H{$timeOffsetMinutes}M");
if ($sign == '+') {
$dateTime->sub($interval);
} else {
$dateTime->add($interval);
}
return $dateTime;
}
}