001/*
002 * (C) Copyright 2006-2010 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     bstefanescu
018 */
019package org.nuxeo.connect.update.task.update;
020
021import java.io.File;
022import java.util.regex.Matcher;
023import java.util.regex.Pattern;
024
025import org.nuxeo.common.utils.FileMatcher;
026
027/**
028 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
029 */
030public class JarUtils {
031
032    // the r? is for supporting version like: caja-r1234
033    public final static Pattern JAR_NAME = Pattern.compile("(.+)-(r?[0-9]+.*)\\.jar");
034
035    public final static Pattern JAR_WITHOUT_VERSION_NAME = Pattern.compile("(.+)\\.jar");
036
037    /**
038     * Try to find the version part in the given JAR name. Return null if name is not containing a version, otherwise
039     * return a match object with the name without the version part and the extension in the 'Match.object' field.
040     *
041     * @param name
042     */
043    public static Match<String> findJarVersion(String name) {
044        Matcher m = JAR_NAME.matcher(name);
045        if (m.matches()) {
046            Match<String> result = new Match<String>();
047            result.object = m.group(1);
048            result.version = m.group(2);
049            return result;
050        }
051        // try to find without version
052        m = JAR_WITHOUT_VERSION_NAME.matcher(name);
053        if (m.matches()) {
054            Match<String> result = new Match<String>();
055            result.object = m.group(1);
056            result.version = UpdateManager.STUDIO_SNAPSHOT_VERSION;
057            return result;
058        }
059        return null;
060    }
061
062    public static Match<File> findJar(File root, String key) {
063        return find(new File(root, key));
064    }
065
066    public static Match<File> find(File filePattern) {
067        File dir = filePattern.getParentFile();
068        File[] files = dir.listFiles();
069        if (files != null) {
070            FileMatcher fm = FileMatcher.getMatcher(filePattern.getName().concat("-{v:r?[0-9]+.*}\\.jar"));
071            String studioSnapshotName = filePattern.getName().concat(".jar");
072            for (File f : files) {
073                if (fm.match(f.getName())) {
074                    Match<File> result = new Match<File>();
075                    result.version = fm.getValue();
076                    result.object = f;
077                    return result;
078                }
079                if (studioSnapshotName.equals(f.getName())) {
080                    Match<File> result = new Match<File>();
081                    result.version = UpdateManager.STUDIO_SNAPSHOT_VERSION;
082                    result.object = f;
083                    return result;
084                }
085            }
086        }
087        return null;
088    }
089
090    static class Match<T> {
091
092        public T object;
093
094        public String version;
095    }
096
097}