ApiVersion.php

<?php
 
/*
 *
 *  ____            _        _   __  __ _                  __  __ ____
 * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
 * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
 * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
 * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * @author PocketMine Team
 * @link http://www.pocketmine.net/
 *
 *
 */
 
declare(strict_types=1);
 
namespace pocketmine\plugin;
 
use pocketmine\utils\VersionString;
use function array_map;
use function array_push;
use function count;
use function usort;
 
final class ApiVersion{
 
    private function __construct(){
        //NOOP
    }
 
    public static function isCompatible(string $myVersionStr, array $wantVersionsStr) : bool{
        $myVersion = new VersionString($myVersionStr);
        foreach($wantVersionsStr as $versionStr){
            $version = new VersionString($versionStr);
            //Format: majorVersion.minorVersion.patch (3.0.0)
            //    or: majorVersion.minorVersion.patch-devBuild (3.0.0-alpha1)
            if($version->getBaseVersion() !== $myVersion->getBaseVersion()){
                if($version->getMajor() !== $myVersion->getMajor()){
                    continue;
                }
 
                if($version->getMinor() > $myVersion->getMinor()){ //If the plugin requires new API features, being backwards compatible
                    continue;
                }
 
                if($version->getMinor() === $myVersion->getMinor() && $version->getPatch() > $myVersion->getPatch()){ //If the plugin requires bug fixes in patches, being backwards compatible
                    continue;
                }
            }
 
            return true;
        }
 
        return false;
    }
 
    public static function checkAmbiguousVersions(array $versions) : array{
        $indexedVersions = [];
 
        foreach($versions as $str){
            $v = new VersionString($str);
            if($v->getSuffix() !== ""){ //suffix is always unambiguous
                continue;
            }
            if(!isset($indexedVersions[$v->getMajor()])){
                $indexedVersions[$v->getMajor()] = [$v];
            }else{
                $indexedVersions[$v->getMajor()][] = $v;
            }
        }
 
        $result = [];
        foreach($indexedVersions as $list){
            if(count($list) > 1){
                array_push($result, ...$list);
            }
        }
 
        usort($result, static function(VersionString $string1, VersionString $string2) : int{ return $string1->compare($string2); });
 
        return array_map(static function(VersionString $string) : string{ return $string->getBaseVersion(); }, $result);
    }
}