001/*
002 * (C) Copyright 2006-2010 Nuxeo SAS (http://nuxeo.com/) and contributors.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the GNU Lesser General Public License
006 * (LGPL) version 2.1 which accompanies this distribution, and is available at
007 * http://www.gnu.org/licenses/lgpl.html
008 *
009 * This library is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * Contributors:
015 *     bstefanescu
016 */
017package org.nuxeo.connect.update.task.update;
018
019import java.io.File;
020import java.util.regex.Matcher;
021import java.util.regex.Pattern;
022
023import org.nuxeo.common.utils.FileMatcher;
024
025/**
026 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
027 */
028public class JarUtils {
029
030    // the r? is for supporting version like: caja-r1234
031    public final static Pattern JAR_NAME = Pattern.compile("(.+)-(r?[0-9]+.*)\\.jar");
032
033    public final static Pattern JAR_WITHOUT_VERSION_NAME = Pattern.compile("(.+)\\.jar");
034
035    /**
036     * Try to find the version part in the given JAR name. Return null if name is not containing a version, otherwise
037     * return a match object with the name without the version part and the extension in the 'Match.object' field.
038     *
039     * @param name
040     */
041    public static Match<String> findJarVersion(String name) {
042        Matcher m = JAR_NAME.matcher(name);
043        if (m.matches()) {
044            Match<String> result = new Match<String>();
045            result.object = m.group(1);
046            result.version = m.group(2);
047            return result;
048        }
049        // try to find without version
050        m = JAR_WITHOUT_VERSION_NAME.matcher(name);
051        if (m.matches()) {
052            Match<String> result = new Match<String>();
053            result.object = m.group(1);
054            result.version = UpdateManager.STUDIO_SNAPSHOT_VERSION;
055            return result;
056        }
057        return null;
058    }
059
060    public static Match<File> findJar(File root, String key) {
061        return find(new File(root, key));
062    }
063
064    public static Match<File> find(File filePattern) {
065        File dir = filePattern.getParentFile();
066        File[] files = dir.listFiles();
067        if (files != null) {
068            FileMatcher fm = FileMatcher.getMatcher(filePattern.getName().concat("-{v:r?[0-9]+.*}\\.jar"));
069            String studioSnapshotName = filePattern.getName().concat(".jar");
070            for (File f : files) {
071                if (fm.match(f.getName())) {
072                    Match<File> result = new Match<File>();
073                    result.version = fm.getValue();
074                    result.object = f;
075                    return result;
076                }
077                if (studioSnapshotName.equals(f.getName())) {
078                    Match<File> result = new Match<File>();
079                    result.version = UpdateManager.STUDIO_SNAPSHOT_VERSION;
080                    result.object = f;
081                    return result;
082                }
083            }
084        }
085        return null;
086    }
087
088    static class Match<T> {
089
090        public T object;
091
092        public String version;
093    }
094
095}