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| 1 | +<?php |
| 2 | + |
| 3 | +namespace Cron; |
| 4 | + |
| 5 | +/** |
| 6 | + * Abstract CRON expression field |
| 7 | + */ |
| 8 | +abstract class AbstractField implements FieldInterface |
| 9 | +{ |
| 10 | + /** |
| 11 | + * Check to see if a field is satisfied by a value |
| 12 | + * |
| 13 | + * @param string $dateValue Date value to check |
| 14 | + * @param string $value Value to test |
| 15 | + * |
| 16 | + * @return bool |
| 17 | + */ |
| 18 | + public function isSatisfied($dateValue, $value) |
| 19 | + { |
| 20 | + if ($this->isIncrementsOfRanges($value)) { |
| 21 | + return $this->isInIncrementsOfRanges($dateValue, $value); |
| 22 | + } elseif ($this->isRange($value)) { |
| 23 | + return $this->isInRange($dateValue, $value); |
| 24 | + } |
| 25 | + |
| 26 | + return $value == '*' || $dateValue == $value; |
| 27 | + } |
| 28 | + |
| 29 | + /** |
| 30 | + * Check if a value is a range |
| 31 | + * |
| 32 | + * @param string $value Value to test |
| 33 | + * |
| 34 | + * @return bool |
| 35 | + */ |
| 36 | + public function isRange($value) |
| 37 | + { |
| 38 | + return strpos($value, '-') !== false; |
| 39 | + } |
| 40 | + |
| 41 | + /** |
| 42 | + * Check if a value is an increments of ranges |
| 43 | + * |
| 44 | + * @param string $value Value to test |
| 45 | + * |
| 46 | + * @return bool |
| 47 | + */ |
| 48 | + public function isIncrementsOfRanges($value) |
| 49 | + { |
| 50 | + return strpos($value, '/') !== false; |
| 51 | + } |
| 52 | + |
| 53 | + /** |
| 54 | + * Test if a value is within a range |
| 55 | + * |
| 56 | + * @param string $dateValue Set date value |
| 57 | + * @param string $value Value to test |
| 58 | + * |
| 59 | + * @return bool |
| 60 | + */ |
| 61 | + public function isInRange($dateValue, $value) |
| 62 | + { |
| 63 | + $parts = array_map('trim', explode('-', $value, 2)); |
| 64 | + |
| 65 | + return $dateValue >= $parts[0] && $dateValue <= $parts[1]; |
| 66 | + } |
| 67 | + |
| 68 | + /** |
| 69 | + * Test if a value is within an increments of ranges (offset[-to]/step size) |
| 70 | + * |
| 71 | + * @param string $dateValue Set date value |
| 72 | + * @param string $value Value to test |
| 73 | + * |
| 74 | + * @return bool |
| 75 | + */ |
| 76 | + public function isInIncrementsOfRanges($dateValue, $value) |
| 77 | + { |
| 78 | + $parts = array_map('trim', explode('/', $value, 2)); |
| 79 | + $stepSize = isset($parts[1]) ? (int) $parts[1] : 0; |
| 80 | + |
| 81 | + if ($stepSize === 0) { |
| 82 | + return false; |
| 83 | + } |
| 84 | + |
| 85 | + if (($parts[0] == '*' || $parts[0] === '0')) { |
| 86 | + return (int) $dateValue % $stepSize == 0; |
| 87 | + } |
| 88 | + |
| 89 | + $range = explode('-', $parts[0], 2); |
| 90 | + $offset = $range[0]; |
| 91 | + $to = isset($range[1]) ? $range[1] : $dateValue; |
| 92 | + // Ensure that the date value is within the range |
| 93 | + if ($dateValue < $offset || $dateValue > $to) { |
| 94 | + return false; |
| 95 | + } |
| 96 | + |
| 97 | + if ($dateValue > $offset && 0 === $stepSize) { |
| 98 | + return false; |
| 99 | + } |
| 100 | + |
| 101 | + for ($i = $offset; $i <= $to; $i+= $stepSize) { |
| 102 | + if ($i == $dateValue) { |
| 103 | + return true; |
| 104 | + } |
| 105 | + } |
| 106 | + |
| 107 | + return false; |
| 108 | + } |
| 109 | + |
| 110 | + /** |
| 111 | + * Returns a range of values for the given cron expression |
| 112 | + * |
| 113 | + * @param string $expression The expression to evaluate |
| 114 | + * @param int $max Maximum offset for range |
| 115 | + * |
| 116 | + * @return array |
| 117 | + */ |
| 118 | + public function getRangeForExpression($expression, $max) |
| 119 | + { |
| 120 | + $values = array(); |
| 121 | + |
| 122 | + if ($this->isRange($expression) || $this->isIncrementsOfRanges($expression)) { |
| 123 | + if (!$this->isIncrementsOfRanges($expression)) { |
| 124 | + list ($offset, $to) = explode('-', $expression); |
| 125 | + $stepSize = 1; |
| 126 | + } |
| 127 | + else { |
| 128 | + $range = array_map('trim', explode('/', $expression, 2)); |
| 129 | + $stepSize = isset($range[1]) ? $range[1] : 0; |
| 130 | + $range = $range[0]; |
| 131 | + $range = explode('-', $range, 2); |
| 132 | + $offset = $range[0]; |
| 133 | + $to = isset($range[1]) ? $range[1] : $max; |
| 134 | + } |
| 135 | + $offset = $offset == '*' ? 0 : $offset; |
| 136 | + for ($i = $offset; $i <= $to; $i += $stepSize) { |
| 137 | + $values[] = $i; |
| 138 | + } |
| 139 | + sort($values); |
| 140 | + } |
| 141 | + else { |
| 142 | + $values = array($expression); |
| 143 | + } |
| 144 | + |
| 145 | + return $values; |
| 146 | + } |
| 147 | + |
| 148 | +} |
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