001    /*
002     * Sonar, open source software quality management tool.
003     * Copyright (C) 2009 SonarSource SA
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.api.batch.maven;
021    
022    import org.apache.commons.lang.StringUtils;
023    import org.apache.maven.model.Plugin;
024    import org.apache.maven.model.ReportPlugin;
025    import org.apache.maven.project.MavenProject;
026    import org.slf4j.LoggerFactory;
027    
028    import java.nio.charset.Charset;
029    import java.util.Collection;
030    
031    /**
032     * @since 1.10
033     */
034    public final class MavenUtils {
035    
036      public static final String GROUP_ID_APACHE_MAVEN = "org.apache.maven.plugins";
037      public static final String GROUP_ID_CODEHAUS_MOJO = "org.codehaus.mojo";
038    
039      private MavenUtils() {
040        // utility class with only static methods
041      }
042    
043      public static String getJavaVersion(MavenProject pom) {
044        MavenPlugin compilerPlugin = MavenPlugin.getPlugin(pom, GROUP_ID_APACHE_MAVEN, "maven-compiler-plugin");
045        if (compilerPlugin != null) {
046          return compilerPlugin.getParameter("target");
047        }
048        return null;
049      }
050    
051    
052      public static Plugin getPlugin(Collection<Plugin> plugins, String groupId, String artifactId) {
053        if (plugins != null) {
054          for (Plugin plugin : plugins) {
055            if (equals(plugin, groupId, artifactId)) {
056              return plugin;
057            }
058          }
059        }
060        return null;
061      }
062    
063      public static boolean equals(Plugin plugin, String groupId, String artifactId) {
064        if (plugin != null && plugin.getArtifactId().equals(artifactId)) {
065          if (plugin.getGroupId() == null) {
066            return groupId == null || groupId.equals(MavenUtils.GROUP_ID_APACHE_MAVEN) || groupId.equals(MavenUtils.GROUP_ID_CODEHAUS_MOJO);
067          }
068          return plugin.getGroupId().equals(groupId);
069        }
070        return false;
071      }
072    
073      public static boolean equals(ReportPlugin plugin, String groupId, String artifactId) {
074        if (plugin != null && plugin.getArtifactId().equals(artifactId)) {
075          if (plugin.getGroupId() == null) {
076            return groupId == null || groupId.equals(MavenUtils.GROUP_ID_APACHE_MAVEN) || groupId.equals(MavenUtils.GROUP_ID_CODEHAUS_MOJO);
077          }
078          return plugin.getGroupId().equals(groupId);
079        }
080        return false;
081      }
082    
083    
084      public static Charset getSourceCharset(MavenProject pom) {
085        String encoding = pom.getProperties().getProperty("project.build.sourceEncoding");
086        if (StringUtils.isNotEmpty(encoding)) {
087          try {
088            return Charset.forName(encoding);
089    
090          } catch (Throwable t) {
091            LoggerFactory.getLogger(MavenUtils.class).warn("Can not get project charset", t);
092          }
093        }
094        return Charset.defaultCharset();
095      }
096    }