001/*
002 * Copyright (c) 2024 QOS.ch Sarl (Switzerland)
003 * All rights reserved.
004 *
005 * Permission is hereby granted, free  of charge, to any person obtaining
006 * a  copy  of this  software  and  associated  documentation files  (the
007 * "Software"), to  deal in  the Software without  restriction, including
008 * without limitation  the rights to  use, copy, modify,  merge, publish,
009 * distribute,  sublicense, and/or sell  copies of  the Software,  and to
010 * permit persons to whom the Software  is furnished to do so, subject to
011 * the following conditions:
012 *
013 * The  above  copyright  notice  and  this permission  notice  shall  be
014 * included in all copies or substantial portions of the Software.
015 *
016 * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
017 * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
018 * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
019 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
020 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
021 * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
022 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
023 *
024 *
025 *
026 */
027
028package ch.qos.logback.tyler.base.util;
029
030import ch.qos.logback.core.util.EnvUtil;
031
032import java.lang.module.ModuleDescriptor;
033import java.util.Optional;
034
035public class VersionUtil {
036
037    static public String tylerVersion() {
038        String moduleVersion = tylerVersionByModule();
039        if(moduleVersion != null)
040            return moduleVersion;
041
042        Package pkg = VersionUtil.class.getPackage();
043        if (pkg == null) {
044            return null;
045        }
046        return pkg.getImplementationVersion();
047    }
048
049    /**
050     * <p>Returns the current version of logback via class.getModule() or null if data is not
051     * available.
052     * </p>
053     *
054     * @since 1.3.0
055     * @return current version or null if missing version data
056     */
057    static private String tylerVersionByModule() {
058        Module module = VersionUtil.class.getModule();
059        if (module == null)
060            return null;
061
062        ModuleDescriptor md = module.getDescriptor();
063        if (md == null)
064            return null;
065        Optional<String> opt = md.rawVersion();
066        return opt.orElse(null);
067    }
068}