nextcloud/lib/private/App/CompareVersion.php

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<?php
declare(strict_types=1);
/**
* @copyright 2018 Christoph Wurst <christoph@winzerhof-wurst.at>
*
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OC\App;
use InvalidArgumentException;
use function explode;
class CompareVersion {
private const REGEX_MAJOR = '/^\d+$/';
private const REGEX_MAJOR_MINOR = '/^\d+\.\d+$/';
private const REGEX_MAJOR_MINOR_PATCH = '/^\d+\.\d+\.\d+(?!\.\d+)/';
private const REGEX_ACTUAL = '/^\d+(\.\d+){1,2}/';
/**
* Checks if the given server version fulfills the given (app) version requirements.
*
* Version requirements can be 'major.minor.patch', 'major.minor' or just 'major',
* so '13.0.1', '13.0' and '13' are valid.
*
* @param string $actual version as major.minor.patch notation
* @param string $required version where major is requried and minor and patch are optional
* @param string $comparator passed to `version_compare`
* @return bool whether the requirement is fulfilled
* @throws InvalidArgumentException if versions specified in an invalid format
*/
public function isCompatible(string $actual, string $required,
string $comparator = '>='): bool {
if (!preg_match(self::REGEX_ACTUAL, $actual, $matches)) {
throw new InvalidArgumentException("version specification $actual is invalid");
}
$cleanActual = $matches[0];
if (preg_match(self::REGEX_MAJOR, $required) === 1) {
return $this->compareMajor($cleanActual, $required, $comparator);
} elseif (preg_match(self::REGEX_MAJOR_MINOR, $required) === 1) {
return $this->compareMajorMinor($cleanActual, $required, $comparator);
} elseif (preg_match(self::REGEX_MAJOR_MINOR_PATCH, $required) === 1) {
return $this->compareMajorMinorPatch($cleanActual, $required, $comparator);
} else {
throw new InvalidArgumentException("required version $required is invalid");
}
}
private function compareMajor(string $actual, string $required,
string $comparator) {
$actualMajor = explode('.', $actual)[0];
$requiredMajor = explode('.', $required)[0];
return version_compare($actualMajor, $requiredMajor, $comparator);
}
private function compareMajorMinor(string $actual, string $required,
string $comparator) {
$actualMajor = explode('.', $actual)[0];
$actualMinor = explode('.', $actual)[1];
$requiredMajor = explode('.', $required)[0];
$requiredMinor = explode('.', $required)[1];
return version_compare("$actualMajor.$actualMinor",
"$requiredMajor.$requiredMinor", $comparator);
}
private function compareMajorMinorPatch($actual, $required, $comparator) {
$actualMajor = explode('.', $actual)[0];
$actualMinor = explode('.', $actual)[1];
$actualPatch = explode('.', $actual)[2];
$requiredMajor = explode('.', $required)[0];
$requiredMinor = explode('.', $required)[1];
$requiredPatch = explode('.', $required)[2];
return version_compare("$actualMajor.$actualMinor.$actualPatch",
"$requiredMajor.$requiredMinor.$requiredPatch", $comparator);
}
}