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<?php |
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namespace Zenstruck\ScheduleBundle\Schedule; |
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use Cron\CronExpression as CronSchedule; |
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/** |
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* @author Kevin Bond <[email protected]> |
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*/ |
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final class CronExpression |
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{ |
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public const MINUTE = 0; |
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public const HOUR = 1; |
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public const DOM = 2; |
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public const MONTH = 3; |
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public const DOW = 4; |
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public const ALIASES = [ |
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'@hourly', |
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'@daily', |
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'@weekly', |
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'@monthly', |
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'@yearly', |
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'@annually', |
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]; |
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private const HASH_ALIAS_MAP = [ |
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'#hourly' => '# * * * *', |
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'#daily' => '# # * * *', |
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'#weekly' => '# # * * #', |
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'#monthly' => '# # # * *', |
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'#annually' => '# # # # *', |
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'#yearly' => '# # # # *', |
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'#midnight' => '# #(0-2) * * *', |
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]; |
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private const RANGES = [ |
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self::MINUTE => [0, 59], |
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self::HOUR => [0, 23], |
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self::DOM => [1, 28], |
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self::MONTH => [1, 12], |
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self::DOW => [0, 6], |
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]; |
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/** @var string */ |
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private $value; |
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/** @var string[] */ |
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private $parts; |
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/** @var string */ |
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private $context; |
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/** @var string */ |
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private $parsedValue; |
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public function __construct(string $value, string $context) |
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{ |
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$this->value = $value; |
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$this->context = $context; |
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if (\in_array($value, self::ALIASES, true)) { |
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return; |
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} |
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$value = self::HASH_ALIAS_MAP[$value] ?? $value; |
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$parts = \explode(' ', $value); |
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if (5 !== \count($parts)) { |
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throw new \InvalidArgumentException("\"{$value}\" is an invalid cron expression."); |
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} |
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$this->parts = $parts; |
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} |
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public function __toString(): string |
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{ |
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return $this->getParsedValue(); |
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} |
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public function getRawValue(): string |
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{ |
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return $this->value; |
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} |
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160 |
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public function getParsedValue(): string |
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{ |
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if (!$this->parts) { |
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return $this->getRawValue(); |
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} |
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return $this->parsedValue ?: $this->parsedValue = \implode(' ', [ |
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$this->parsePart(self::MINUTE), |
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$this->parsePart(self::HOUR), |
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$this->parsePart(self::DOM), |
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28 |
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$this->parsePart(self::MONTH), |
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$this->parsePart(self::DOW), |
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]); |
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} |
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public function isHashed(): bool |
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{ |
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return $this->getRawValue() !== $this->getParsedValue(); |
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} |
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public function getNextRun(?string $timezone = null): \DateTimeInterface |
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{ |
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return CronSchedule::factory($this->getParsedValue())->getNextRunDate('now', 0, false, $timezone); |
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} |
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public function isDue(\DateTimeInterface $timestamp, ?string $timezone = null): bool |
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{ |
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return CronSchedule::factory($this->getParsedValue())->isDue($timestamp, $timezone); |
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} |
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private function parsePart(int $position): string |
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{ |
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$value = $this->parts[$position]; |
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if (\preg_match('#^\#(\((\d+)-(\d+)\))?$#', $value, $matches)) { |
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$value = $this->hashField( |
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$matches[2] ?? self::RANGES[$position][0], |
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$matches[3] ?? self::RANGES[$position][1] |
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); |
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} |
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return $value; |
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} |
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private function hashField(int $start, int $end): string |
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{ |
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$possibleValues = \range($start, $end); |
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return (string) $possibleValues[(int) \fmod(\hexdec(\mb_substr(\md5($this->context), 0, 10)), \count($possibleValues))]; |
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} |
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} |
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zenstruck /
schedule-bundle
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.