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<?php |
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namespace Loevgaard\DandomainDateTime; |
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use DateTime; |
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use DateTimeInterface; |
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use DateTimeZone; |
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use Exception; |
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use InvalidArgumentException; |
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/** |
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* This class represents a date time in Dandomain where the time zone is always Europe/Copenhagen |
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*/ |
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class DateTimeImmutable extends \DateTimeImmutable |
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{ |
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public function __construct($time = 'now') |
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{ |
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if (strpos($time, '@') !== false) { |
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throw new InvalidArgumentException('Use DateTimeImmutable::createFromTimestamp instead'); |
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} |
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parent::__construct($time, static::timeZone()); |
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} |
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/** |
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* @throws Exception |
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*/ |
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public static function instance(DateTimeInterface $dt) : DateTimeImmutable |
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{ |
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if ($dt instanceof static) { |
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return clone $dt; |
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} |
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return new static($dt->format('Y-m-d H:i:s.u')); |
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} |
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/** |
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* @throws Exception |
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*/ |
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public static function createFromFormat($format, $time, $timezone = null) : DateTimeImmutable |
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{ |
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if ($timezone !== null) { |
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throw new InvalidArgumentException('Do not pass time zone as an argument'); |
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} |
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$dt = parent::createFromFormat($format, $time, static::timeZone()); |
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return static::instance($dt); |
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} |
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/** |
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* @param DateTime $dateTime |
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* @return DateTimeImmutable |
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*/ |
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public static function createFromMutable($dateTime) : DateTimeImmutable |
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{ |
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$dt = static::createFromMutable($dateTime); |
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return $dt->setTimezone(static::timeZone()); |
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} |
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/** |
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* @throws Exception |
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*/ |
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public static function createFromTimestamp($timestamp) : DateTimeImmutable |
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{ |
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if (is_string($timestamp) && ($pos = strpos($timestamp, '.')) !== false) { |
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$timestamp = substr($timestamp, 0, $pos); |
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} |
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$dateTime = new DateTime('@'.$timestamp); |
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$dateTime->setTimezone(static::timeZone()); |
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return static::instance($dateTime); |
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} |
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/** |
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* @throws Exception |
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*/ |
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public static function createFromJson(string $json) : DateTimeImmutable |
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{ |
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preg_match('/(\d+)\+/', $json, $matches); |
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if (!isset($matches[1])) { |
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throw new InvalidArgumentException('$json is not a valid JSON date. Input: ' . $json); |
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} |
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// remove the last three digits since the json date is given in milliseconds |
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$timestamp = substr($matches[1], 0, -3); |
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return static::createFromTimestamp($timestamp); |
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} |
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/** |
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* Returns the default Dandomain time zone |
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* |
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* @return DateTimeZone |
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*/ |
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protected static function timeZone() : DateTimeZone |
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{ |
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return new DateTimeZone('Europe/Copenhagen'); |
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} |
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} |
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loevgaard /
dandomain-datetime
