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<?php |
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/** |
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* This file is part of the Version package. |
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* |
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* Copyright (c) Nikola Posa <[email protected]> |
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* |
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* For full copyright and license information, please refer to the LICENSE file, |
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* located at the package root folder. |
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*/ |
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namespace Version\Comparator; |
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use Version\Version; |
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/** |
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* @author Nikola Posa <[email protected]> |
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*/ |
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final class SemverComparator implements ComparatorInterface |
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{ |
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/** |
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* {@inheritDoc} |
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*/ |
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public function compare(Version $version1, Version $version2) |
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{ |
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if (0 != ($majorCompareResult = $this->compareNumberPart($version1->getMajor(), $version2->getMajor()))) { |
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return $majorCompareResult; |
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} |
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if (0 != ($minorCompareResult = $this->compareNumberPart($version1->getMinor(), $version2->getMinor()))) { |
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return $minorCompareResult; |
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} |
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if (0 != ($patchCompareResult = $this->compareNumberPart($version1->getPatch(), $version2->getPatch()))) { |
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return $patchCompareResult; |
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} |
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return $this->compareMeta($version1, $version2); |
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} |
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private function compareNumberPart($number1, $number2) |
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{ |
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$diff = $number1 - $number2; |
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if ($diff > 0) { |
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return 1; |
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} |
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if ($diff < 0) { |
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return -1; |
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} |
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return 0; |
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} |
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private function compareMeta(Version $version1, Version $version2) |
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{ |
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$v1IsPreRelease = $version1->isPreRelease(); |
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$v2IsPreRelease = $version2->isPreRelease(); |
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if ($v1IsPreRelease xor $v2IsPreRelease) { |
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return !$v1IsPreRelease |
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? 1 // normal version has greater precedence than a pre-release version version |
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3 |
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: -1; // pre-release version has lower precedence than a normal version |
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} |
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$result = $version1->getPreRelease()->compareTo($version2->getPreRelease()); |
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if ($result > 0) { |
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return 1; |
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} |
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if ($result < 0) { |
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return -1; |
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} |
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return 0; |
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} |
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} |
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nikolaposa /
version
