101 lines
2.5 KiB
PHP
101 lines
2.5 KiB
PHP
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<?php
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/**
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* Abstract CRON expression field
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*
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* @author Michael Dowling <mtdowling@gmail.com>
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*/
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abstract class CronExpression_AbstractField implements CronExpression_FieldInterface
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{
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/**
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* Check to see if a field is satisfied by a value
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*
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* @param string $dateValue Date value to check
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* @param string $value Value to test
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*
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* @return bool
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*/
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public function isSatisfied($dateValue, $value)
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{
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if ($this->isIncrementsOfRanges($value)) {
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return $this->isInIncrementsOfRanges($dateValue, $value);
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} elseif ($this->isRange($value)) {
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return $this->isInRange($dateValue, $value);
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}
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return $value == '*' || $dateValue == $value;
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}
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/**
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* Check if a value is a range
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*
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* @param string $value Value to test
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*
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* @return bool
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*/
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public function isRange($value)
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{
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return strpos($value, '-') !== false;
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}
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/**
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* Check if a value is an increments of ranges
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*
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* @param string $value Value to test
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*
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* @return bool
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*/
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public function isIncrementsOfRanges($value)
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{
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return strpos($value, '/') !== false;
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}
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/**
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* Test if a value is within a range
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*
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* @param string $dateValue Set date value
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* @param string $value Value to test
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*
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* @return bool
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*/
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public function isInRange($dateValue, $value)
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{
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$parts = array_map('trim', explode('-', $value, 2));
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return $dateValue >= $parts[0] && $dateValue <= $parts[1];
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}
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/**
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* Test if a value is within an increments of ranges (offset[-to]/step size)
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*
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* @param string $dateValue Set date value
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* @param string $value Value to test
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*
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* @return bool
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*/
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public function isInIncrementsOfRanges($dateValue, $value)
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{
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$parts = array_map('trim', explode('/', $value, 2));
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$stepSize = isset($parts[1]) ? $parts[1] : 0;
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if ($parts[0] == '*' || $parts[0] === '0') {
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return (int) $dateValue % $stepSize == 0;
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}
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$range = explode('-', $parts[0], 2);
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$offset = $range[0];
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$to = isset($range[1]) ? $range[1] : $dateValue;
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// Ensure that the date value is within the range
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if ($dateValue < $offset || $dateValue > $to) {
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return false;
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}
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for ($i = $offset; $i <= $to; $i+= $stepSize) {
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if ($i == $dateValue) {
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return true;
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}
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}
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return false;
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}
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}
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