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<?php
/**
* @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;
class CompareVersion {
const REGEX_MAJOR = '/^\d+$/';
const REGEX_MAJOR_MINOR = '/^\d+.\d+$/';
const REGEX_MAJOR_MINOR_PATCH = '/^\d+.\d+.\d+$/';
const REGEX_SERVER = '/^\d+.\d+.\d+(.\d+)?$/';
/**
* 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_SERVER, $actual)) {
throw new InvalidArgumentException('server version is invalid');
}
if (preg_match(self::REGEX_MAJOR, $required) === 1) {
return $this->compareMajor($actual, $required, $comparator);
} elseif (preg_match(self::REGEX_MAJOR_MINOR, $required) === 1) {
return $this->compareMajorMinor($actual, $required, $comparator);
} elseif (preg_match(self::REGEX_MAJOR_MINOR_PATCH, $required) === 1) {
return $this->compareMajorMinorPatch($actual, $required, $comparator);
} else {
throw new InvalidArgumentException('required version 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);
}
}
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