<?php
/**
* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
* @copyright Copyright (c) Brian Nesbitt <brian@nesbot.com>
* @link http://cakephp.org CakePHP(tm) Project
* @license http://www.opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\Chronos;
use DateTimeImmutable;
use DateTimeZone;
/**
* An Immutable extension on the native DateTime object.
*
* Adds a number of convenience APIs methods and the ability
* to easily convert into a mutable object.
*
* @property-read int $year
* @property-read int $yearIso
* @property-read int $month
* @property-read int $day
* @property-read int $hour
* @property-read int $minute
* @property-read int $second
* @property-read int $timestamp seconds since the Unix Epoch
* @property-read DateTimeZone $timezone the current timezone
* @property-read DateTimeZone $tz alias of timezone
* @property-read int $micro
* @property-read int $dayOfWeek 1 (for Monday) through 7 (for Sunday)
* @property-read int $dayOfYear 0 through 365
* @property-read int $weekOfMonth 1 through 5
* @property-read int $weekOfYear ISO-8601 week number of year, weeks starting on Monday
* @property-read int $daysInMonth number of days in the given month
* @property-read int $age does a diffInYears() with default parameters
* @property-read int $quarter the quarter of this instance, 1 - 4
* @property-read int $offset the timezone offset in seconds from UTC
* @property-read int $offsetHours the timezone offset in hours from UTC
* @property-read bool $dst daylight savings time indicator, true if DST, false otherwise
* @property-read bool $local checks if the timezone is local, true if local, false otherwise
* @property-read bool $utc checks if the timezone is UTC, true if UTC, false otherwise
* @property-read string $timezoneName
* @property-read string $tzName
*/
class Chronos extends DateTimeImmutable implements ChronosInterface
{
use Traits\ComparisonTrait;
use Traits\DifferenceTrait;
use Traits\FactoryTrait;
use Traits\FormattingTrait;
use Traits\MagicPropertyTrait;
use Traits\ModifierTrait;
use Traits\RelativeKeywordTrait;
use Traits\TimezoneTrait;
/**
* A test ChronosInterface instance to be returned when now instances are created
*
* There is a single test now for all date/time classes provided by Chronos.
* This aims to emulate stubbing out 'now' which is a single global fact.
*
* @var \Cake\Chronos\ChronosInterface
*/
protected static $testNow;
/**
* Format to use for __toString method when type juggling occurs.
*
* @var string
*/
protected static $toStringFormat = ChronosInterface::DEFAULT_TO_STRING_FORMAT;
/**
* Create a new Chronos instance.
*
* Please see the testing aids section (specifically static::setTestNow())
* for more on the possibility of this constructor returning a test instance.
*
* @param string|null $time Fixed or relative time
* @param \DateTimeZone|string|null $tz The timezone for the instance
*/
public function __construct($time = 'now', $tz = null)
{
if ($tz !== null) {
$tz = $tz instanceof DateTimeZone ? $tz : new DateTimeZone($tz);
}
static::$_lastErrors = [];
$testNow = static::getTestNow();
if ($testNow === null) {
parent::__construct($time === null ? 'now' : $time, $tz);
return;
}
$relative = static::hasRelativeKeywords($time);
if (!empty($time) && $time !== 'now' && !$relative) {
parent::__construct($time, $tz);
return;
}
$testNow = clone $testNow;
if ($relative) {
$testNow = $testNow->modify($time);
}
$relativeTime = static::isTimeExpression($time);
if (!$relativeTime && $tz !== $testNow->getTimezone()) {
$testNow = $testNow->setTimezone($tz === null ? date_default_timezone_get() : $tz);
}
$time = $testNow->format('Y-m-d H:i:s.u');
parent::__construct($time, $tz);
}
/**
* Create a new mutable instance from current immutable instance.
*
* @return \Cake\Chronos\MutableDateTime
*/
public function toMutable()
{
return MutableDateTime::instance($this);
}
/**
* Get a copy of the instance
*
* @return $this
*/
public function copy()
{
return $this;
}
/**
* Set a ChronosInterface instance (real or mock) to be returned when a "now"
* instance is created. The provided instance will be returned
* specifically under the following conditions:
* - A call to the static now() method, ex. ChronosInterface::now()
* - When a null (or blank string) is passed to the constructor or parse(), ex. new Chronos(null)
* - When the string "now" is passed to the constructor or parse(), ex. new Chronos('now')
* - When a string containing the desired time is passed to ChronosInterface::parse()
*
* Note the timezone parameter was left out of the examples above and
* has no affect as the mock value will be returned regardless of its value.
*
* To clear the test instance call this method using the default
* parameter of null.
*
* @param \Cake\Chronos\ChronosInterface|string|null $testNow The instance to use for all future instances.
* @return void
*/
public static function setTestNow($testNow = null)
{
static::$testNow = is_string($testNow) ? static::parse($testNow) : $testNow;
}
/**
* Get the ChronosInterface instance (real or mock) to be returned when a "now"
* instance is created.
*
* @return \Cake\Chronos\ChronosInterface The current instance used for testing
*/
public static function getTestNow()
{
return static::$testNow;
}
/**
* Determine if there is a valid test instance set. A valid test instance
* is anything that is not null.
*
* @return bool True if there is a test instance, otherwise false
*/
public static function hasTestNow()
{
return static::$testNow !== null;
}
/**
* Return properties for debugging.
*
* @return array
*/
public function __debugInfo()
{
$properties = [
'hasFixedNow' => static::hasTestNow(),
'time' => $this->format('Y-m-d H:i:s.u'),
'timezone' => $this->getTimezone()->getName(),
];
return $properties;
}
}