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<?php |
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namespace Popy\Calendar\Converter\UnixTimeConverter; |
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use Popy\Calendar\ValueObject\Time as TimeObject; |
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use Popy\Calendar\Converter\Conversion; |
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use Popy\Calendar\Converter\UnixTimeConverterInterface; |
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use Popy\Calendar\ValueObject\DateTimeRepresentationInterface; |
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/** |
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* Time of the day representation. |
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* |
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* Fragment units are, usually, named as, and used as : |
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* 0 => hours (format symbols ghGH) |
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* 1 => minutes (format symbol i) |
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* 2 => seconds (format symbol s) |
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* 3 => milliseconds (format symbol v) |
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* 4 => microseconds (format symbol µ) |
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* |
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* Transversal units are, usually, named as and used as : |
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* 0 => Internet swatch time (format symbol B). |
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*/ |
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class Time implements UnixTimeConverterInterface |
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{ |
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/** |
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* Day length in seconds. |
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* |
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* @var integer |
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*/ |
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protected $dayLengthInSeconds = 24 * 3600; |
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/** |
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* Time format ranges. |
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* |
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* @var array<int> |
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*/ |
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protected $ranges = [24, 60, 60, 1000, 1000]; |
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/** |
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* Day length in microseconds. |
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* |
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* @var integer |
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*/ |
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protected $dayLengthInMicroSeconds; |
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/** |
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* Class constructor. |
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* |
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* @param array|null $ranges Time segments ranges/sizes. |
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* @param integer|null $dayLengthInSeconds Day length. |
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*/ |
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public function __construct(array $ranges = null, $dayLengthInSeconds = null) |
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{ |
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if (null !== $ranges) { |
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$this->ranges = $ranges; |
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} |
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if (null !== $dayLengthInSeconds) { |
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$this->dayLengthInSeconds = $dayLengthInSeconds; |
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} |
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$this->dayLengthInMicroSeconds = $this->dayLengthInSeconds * 1000000; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function fromUnixTime(Conversion $conversion) |
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{ |
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$input = $conversion->getTo(); |
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if (!$input instanceof DateTimeRepresentationInterface) { |
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return; |
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} |
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$unixTime = $conversion->getUnixTime(); |
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$microSec = $conversion->getUnixMicroTime() |
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+ ($unixTime % $this->dayLengthInSeconds) * 1000000 |
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; |
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$time = $this->convertMicrosecondsToTime($microSec); |
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// Swatch time calculation. It's a fixed earth-day ratio, starting at a |
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// fixed +01:00 time offset. |
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$time = $time->withTransversal( |
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0, |
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intval(1000 * ($input->getUnixTime() + 3600) / 86400) % 1000 |
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); |
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// Removing the consumed seconds |
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$unixTime -= $unixTime % $this->dayLengthInSeconds; |
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$conversion |
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->setUnixTime($unixTime) |
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->setUnixMicroTime(0) |
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->setTo($input->withTime($time)) |
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; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function toUnixTime(Conversion $conversion) |
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{ |
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$input = $conversion->getTo(); |
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if (!$input instanceof DateTimeRepresentationInterface) { |
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return; |
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} |
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$time = $input->getTime()->withSizes($this->ranges); |
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$microsec = $this->convertTimeToMicroseconds($time); |
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$conversion |
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->setTo($input->withTime($time)) |
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->setUnixTime($conversion->getUnixTime() + intval($microsec / 1000000)) |
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// Swatch time can return negative time. Shield against that. |
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->setUnixMicroTime(max(0, $microsec % 1000000)) |
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; |
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} |
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/** |
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* Convert a time expressed in microseconds, into a Time object. |
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* |
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* @param integer $time |
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* |
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* @return TimeObject |
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*/ |
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public function convertMicrosecondsToTime($time) |
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{ |
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// Calculating day-ratio; |
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// Dividing microseconds per seconds results in the intended value |
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$ratio = intval($time / $this->dayLengthInSeconds); |
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// If using a different time format, apply ratio |
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$timeScale = array_product($this->ranges); |
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if ($this->dayLengthInMicroSeconds !== $timeScale) { |
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$time = intval( |
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($time * $timeScale) / $this->dayLengthInMicroSeconds |
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); |
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} |
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$len = count($this->ranges); |
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$res = array_fill(0, $len, 0); |
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for ($i=$len - 1; $i > -1; $i--) { |
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$res[$i] = $time % $this->ranges[$i]; |
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$time = intval($time / $this->ranges[$i]); |
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} |
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return new TimeObject($res, $this->ranges, $ratio); |
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} |
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/** |
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* Converts a "Time" into its value in its lower unit. |
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* |
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* @param TimeObject $time |
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* |
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* @return integer |
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*/ |
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public function convertTimeToMicroseconds(TimeObject $time) |
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{ |
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$meaningfull = $time->countMeaningfull() > 0; |
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// IF time had no meaningfull informations, fallback to a day ratio. |
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if (!$meaningfull && null !== $ratio = $time->getRatio()) { |
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return $ratio * $this->dayLengthInSeconds; |
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} |
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// IF time had no meaningfull informations, use internel swatch time. |
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// May not work properly on non-earth systems. Whatever, who uses this |
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// anyway ? ANd who will use this on other planets ? |
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if (!$meaningfull && null !== $swatch = $time->getTransversal(0)) { |
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return $swatch * 1000 * 86400 |
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- 3600 * 1000000 // minus fixed time offset |
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; |
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} |
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$len = count($this->ranges); |
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$res = 0; |
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for ($i=0; $i < $len; $i++) { |
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$res = $res * $this->ranges[$i] + (int)$time->get($i); |
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} |
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// If using a different time format, apply ratio |
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$timeScale = array_product($this->ranges); |
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if ($this->dayLengthInMicroSeconds !== $timeScale) { |
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return intval(($res * $this->dayLengthInMicroSeconds) / $timeScale); |
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} |
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return $res; |
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} |
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} |
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popy-dev /
popy-calendar
