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<?php |
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namespace Mbright\Validation\Rule\Validate\MySql; |
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use Mbright\Validation\Rule\Validate\ValidateRuleInterface; |
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/** |
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* Validates that data can be inserted into one of the following column types: |
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* - Time |
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*/ |
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class Time implements ValidateRuleInterface |
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{ |
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/** |
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* Indicates if the given field's value is a MySql safe Time. |
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* |
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* @param object $subject |
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* @param string $field |
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* |
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* @return bool |
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*/ |
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public function __invoke($subject, string $field): bool |
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{ |
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$value = $subject->$field; |
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$timeParts = $this->extractTimeParts($value); |
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return ! is_null($timeParts) |
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&& $this->validateHours($timeParts->hours) |
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&& $this->validateMinutes($timeParts->minutes) |
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&& $this->validateSeconds($timeParts->seconds); |
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} |
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/** |
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* Extracts time parts from the given string. |
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* |
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* Will return an object with 3 properties, hours, minutes, seconds with the values from the string. Each property |
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* defaults to zero. If the string cannot be parsed, return null. |
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* |
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* @param $value |
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* @return ?\stdClass |
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*/ |
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protected function extractTimeParts($value): ?\stdClass |
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{ |
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$extractedParts = (object) [ |
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'hours' => 0, |
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'minutes' => 0, |
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'seconds'=> 0 |
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]; |
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$timeSegments = explode(':', $value); |
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$numOfSegments = count($timeSegments); |
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if ($numOfSegments === 3) { |
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$extractedParts->hours = $timeSegments[0]; |
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$extractedParts->minutes = $timeSegments[1]; |
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$extractedParts->seconds = $timeSegments[2]; |
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} elseif ($numOfSegments === 2) { |
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$extractedParts->hours = $timeSegments[0]; |
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$extractedParts->minutes = $timeSegments[1]; |
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} elseif ($numOfSegments === 1) { |
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// if a 3rd character is present and equal to . then we have a SS format segment else it has to be HHMMSS |
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$isSecondsOnly = substr($timeSegments[0], 2, 1) !== '.'; |
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if ($isSecondsOnly) { |
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$extractedParts->seconds = $timeSegments[0]; |
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} else { |
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$extractedParts = $this->handleNonDelimitedString($timeSegments[0], $extractedParts); |
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} |
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} else { |
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$extractedParts = null; |
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} |
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return $extractedParts; |
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} |
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protected function handleNonDelimitedString(string $timeString, \stdClass $extractedParts) |
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{ |
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$parsedSegments = []; |
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preg_match('(^\d{2})(\d{2})(\d{2}\.\d+$|\d{2}$)', $timeString, $parsedSegments); |
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if (count($parsedSegments) !== 4) { |
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return null; |
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} |
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$extractedParts->hours = $parsedSegments[1]; |
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$extractedParts->minutes = $parsedSegments[2]; |
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$extractedParts->seconds = $parsedSegments[3]; |
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return $extractedParts; |
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} |
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/** |
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* Validates that the string can represent seconds. |
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* |
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* @param string $seconds |
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* |
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* @return bool |
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*/ |
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protected function validateSeconds(string $seconds): bool |
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{ |
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$precision = strlen(substr(strrchr($seconds, '.'), 1)); |
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if ($precision > 6) { |
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return false; |
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} |
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$seconds = (float) $seconds; |
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return $seconds >= 0 && $seconds < 60; |
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} |
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/** |
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* Validates that the string can represent minutes. |
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* |
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* @param string $minutes |
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* |
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* @return bool |
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*/ |
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protected function validateMinutes(string $minutes): bool |
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{ |
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$minutes = (int) $minutes; |
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return $minutes >= 0 && $minutes < 60; |
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} |
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/** |
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* Validates tha the string can represent hours. |
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* |
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* @param string $hours |
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* |
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* @return bool |
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*/ |
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protected function validateHours(string $hours): bool |
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{ |
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$hours = (int) $hours; |
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return $hours >= -838 && $hours <= 838; |
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} |
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} |
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MarcusFulbright /
Validate
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