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   1  <?php
   2  
   3  declare(strict_types=1);
   4  
   5  /*
   6   * The MIT License (MIT)
   7   *
   8   * Copyright (c) 2018-2020 Spomky-Labs
   9   *
  10   * This software may be modified and distributed under the terms
  11   * of the MIT license.  See the LICENSE file for details.
  12   */
  13  
  14  namespace CBOR\Tag;
  15  
  16  use CBOR\CBORObject;
  17  use CBOR\OtherObject\DoublePrecisionFloatObject;
  18  use CBOR\OtherObject\HalfPrecisionFloatObject;
  19  use CBOR\OtherObject\SinglePrecisionFloatObject;
  20  use CBOR\TagObject as Base;
  21  use CBOR\UnsignedIntegerObject;
  22  use DateTimeImmutable;
  23  use InvalidArgumentException;
  24  use function strval;
  25  
  26  final class TimestampTag extends Base
  27  {
  28      public static function getTagId(): int
  29      {
  30          return 1;
  31      }
  32  
  33      public static function createFromLoadedData(int $additionalInformation, ?string $data, CBORObject $object): Base
  34      {
  35          return new self($additionalInformation, $data, $object);
  36      }
  37  
  38      public static function create(CBORObject $object): Base
  39      {
  40          if (!$object instanceof UnsignedIntegerObject && !$object instanceof HalfPrecisionFloatObject && !$object instanceof SinglePrecisionFloatObject && !$object instanceof DoublePrecisionFloatObject) {
  41              throw new InvalidArgumentException('This tag only accepts a Byte String object.');
  42          }
  43  
  44          return new self(1, null, $object);
  45      }
  46  
  47      public function getNormalizedData(bool $ignoreTags = false)
  48      {
  49          if ($ignoreTags) {
  50              return $this->object->getNormalizedData($ignoreTags);
  51          }
  52          switch (true) {
  53              case $this->object instanceof UnsignedIntegerObject:
  54                  return DateTimeImmutable::createFromFormat('U', strval($this->object->getNormalizedData($ignoreTags)));
  55              case $this->object instanceof HalfPrecisionFloatObject:
  56              case $this->object instanceof SinglePrecisionFloatObject:
  57              case $this->object instanceof DoublePrecisionFloatObject:
  58                  return DateTimeImmutable::createFromFormat('U.u', strval($this->object->getNormalizedData($ignoreTags)));
  59              default:
  60                  return $this->object->getNormalizedData($ignoreTags);
  61          }
  62      }
  63  }