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<?php |
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namespace Mistletoe; |
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use Cron\CronExpression; |
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use Mistletoe\Contracts\ExpressionBuilderInterface; |
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/** |
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* Class ExpressionBuilder |
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* @package Mistletoe |
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*/ |
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class ExpressionBuilder implements ExpressionBuilderInterface |
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{ |
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/** @var TaskBag */ |
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protected $bag; |
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/** |
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* Builds an expression from the TaskBag |
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* @param TaskBag|null $bag |
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* @return CronExpression |
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*/ |
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public function build(TaskBag $bag = null) |
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{ |
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if ($bag) { |
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$this->setTaskBag($bag); |
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} |
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$parts = []; |
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if ($this->onlyIntervalIsSet($this->bag)) { |
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$expression = $this->bag->getInterval(); |
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} else { |
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// Get with defaults |
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$parts['minute'] = $this->getPartWithDefault('minute'); |
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$parts['hour'] = $this->getPartWithDefault('hour'); |
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$parts['date'] = $this->getPartWithDefault('day'); |
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$parts['month'] = $this->getPartWithDefault('month'); |
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$parts['weekday'] = $this->getPartWithDefault('weekday'); |
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/* Are we dealing with outside scenarios? */ |
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// Are we setting a day and month without a time? |
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if ( |
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($this->bag->getDay() && $this->bag->getMonth() |
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&& (!$this->bag->getHour() && !$this->bag->getMinute())) |
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) { |
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// Yes. We don't want it to run every minute! |
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$parts['minute'] = '0'; |
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$parts['hour'] = '0'; |
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} |
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// Any other outside scenarios? |
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$expression = implode(' ', $parts); |
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} |
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return $this->buildFrom($expression); |
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} |
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/** |
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* Builds expression from a string expression |
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* @param null|string $string |
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* @return CronExpression |
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*/ |
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public function buildFrom($string) |
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{ |
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return CronExpression::factory($string); |
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} |
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/** |
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* Set the Task Bag |
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* @param TaskBag $bag |
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* @return $this |
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*/ |
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public function setTaskBag(TaskBag $bag) |
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{ |
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$this->bag = $bag; |
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return $this; |
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} |
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/** |
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* @return TaskBag |
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*/ |
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public function getTaskBag() |
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{ |
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return $this->bag; |
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} |
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/** |
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* Is only the interval set in the bag? |
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* @param TaskBag $bag |
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* @return bool |
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*/ |
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protected function onlyIntervalIsSet(TaskBag $bag) |
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{ |
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return $bag->getInterval() !== null |
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&& $bag->getMonth() === null |
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&& $bag->getDay() === null |
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&& $bag->getMinute() === null |
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&& $bag->getHour() === null; |
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} |
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/** |
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* Ensures the parts are cast as strings |
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* @param $value |
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* @return string |
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*/ |
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protected function toPart($value) |
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{ |
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if ($value === 0) { |
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return '0'; |
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} |
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return (string) $value; |
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} |
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/** |
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* Returns the part from the bag with * as default |
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* @param string $part |
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* @return string |
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*/ |
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protected function getPartWithDefault($part) |
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{ |
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$value = $this->bag->{'get'.ucfirst($part)}(); |
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if (!is_null($value)) { |
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return $this->toPart($value); |
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} else { |
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return '*'; |
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} |
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} |
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} |
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chrismichaels84 /
mistletoe
