84 lines
2.5 KiB
PHP
84 lines
2.5 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016 Lukas Reschke <lukas@statuscode.ch>
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*
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* @author Lukas Reschke <lukas@statuscode.ch>
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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namespace OC\App\AppStore\Version;
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/**
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* Class VersionParser parses the versions as sent by the Nextcloud app store
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*
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* @package OC\App\AppStore
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*/
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class VersionParser {
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/**
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* @param string $versionString
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* @return bool
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*/
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private function isValidVersionString($versionString) {
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return (bool)preg_match('/^[0-9.]+$/', $versionString);
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}
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/**
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* Returns the version for a version string
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*
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* @param string $versionSpec
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* @return Version
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* @throws \Exception If the version cannot be parsed
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*/
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public function getVersion($versionSpec) {
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// * indicates that the version is compatible with all versions
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if($versionSpec === '*') {
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return new Version('', '');
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}
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// Count the amount of =, if it is one then it's either maximum or minimum
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// version. If it is two then it is maximum and minimum.
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$versionElements = explode(' ', $versionSpec);
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$firstVersion = isset($versionElements[0]) ? $versionElements[0] : '';
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$firstVersionNumber = substr($firstVersion, 2);
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$secondVersion = isset($versionElements[1]) ? $versionElements[1] : '';
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$secondVersionNumber = substr($secondVersion, 2);
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switch(count($versionElements)) {
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case 1:
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if(!$this->isValidVersionString($firstVersionNumber)) {
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break;
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}
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if(strpos($firstVersion, '>') === 0) {
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return new Version($firstVersionNumber, '');
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}
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return new Version('', $firstVersionNumber);
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case 2:
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if(!$this->isValidVersionString($firstVersionNumber) || !$this->isValidVersionString($secondVersionNumber)) {
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break;
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}
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return new Version($firstVersionNumber, $secondVersionNumber);
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}
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throw new \Exception(
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sprintf(
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'Version cannot be parsed: %s',
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$versionSpec
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)
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);
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}
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}
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