001    /*
002     * Sonar, open source software quality management tool.
003     * Copyright (C) 2008-2011 SonarSource
004     * mailto:contact AT sonarsource DOT com
005     *
006     * Sonar is free software; you can redistribute it and/or
007     * modify it under the terms of the GNU Lesser General Public
008     * License as published by the Free Software Foundation; either
009     * version 3 of the License, or (at your option) any later version.
010     *
011     * Sonar is distributed in the hope that it will be useful,
012     * but WITHOUT ANY WARRANTY; without even the implied warranty of
013     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014     * Lesser General Public License for more details.
015     *
016     * You should have received a copy of the GNU Lesser General Public
017     * License along with Sonar; if not, write to the Free Software
018     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
019     */
020    package org.sonar.plugins.checkstyle;
021    
022    import org.apache.commons.io.IOUtils;
023    import org.slf4j.LoggerFactory;
024    
025    import java.io.IOException;
026    import java.io.InputStream;
027    import java.util.Properties;
028    
029    public enum CheckstyleVersion {
030      INSTANCE;
031    
032      private static final String PROPERTIES_PATH = "/org/sonar/plugins/checkstyle/checkstyle-plugin.properties";
033      private String version;
034    
035      public static String getVersion() {
036        return INSTANCE.version;
037      }
038    
039      private CheckstyleVersion() {
040        InputStream input = getClass().getResourceAsStream(PROPERTIES_PATH);
041        try {
042          Properties properties = new Properties();
043          properties.load(input);
044          this.version = properties.getProperty("checkstyle.version");
045    
046        } catch (IOException e) {
047          LoggerFactory.getLogger(getClass()).warn("Can not load the Checkstyle version from the file " + PROPERTIES_PATH);
048          this.version = "";
049    
050        } finally {
051          IOUtils.closeQuietly(input);
052        }
053      }
054    }