package org.apache.maven.scm.provider.git.jgit.command.info;
   
   /*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  
  
  import java.io.File;
  import java.util.Collections;
  
  import org.apache.maven.scm.CommandParameters;
  import org.apache.maven.scm.ScmException;
  import org.apache.maven.scm.ScmFileSet;
  import org.apache.maven.scm.ScmResult;
  import org.apache.maven.scm.command.AbstractCommand;
  import org.apache.maven.scm.command.info.InfoItem;
  import org.apache.maven.scm.command.info.InfoScmResult;
  import org.apache.maven.scm.provider.ScmProviderRepository;
  import org.apache.maven.scm.provider.git.command.GitCommand;
  import org.apache.maven.scm.provider.git.jgit.command.JGitUtils;
  import org.codehaus.plexus.util.StringUtils;
  import org.eclipse.jgit.api.Git;
  import org.eclipse.jgit.lib.ObjectId;
  
  /**
   * @since 1.9.5
   */
  public class JGitInfoCommand
      extends AbstractCommand
      implements GitCommand
  {
      @Override
      protected ScmResult executeCommand( ScmProviderRepository repository, ScmFileSet fileSet,
                                          CommandParameters parameters )
          throws ScmException
      {
          Git git = null;
          try
          {
              File basedir = fileSet.getBasedir();
  
              git = Git.open( basedir );
  
              ObjectId objectId = git.getRepository().resolve( "HEAD" );
  
              InfoItem infoItem = new InfoItem();
              infoItem.setRevision( StringUtils.trim( objectId.name() ) );
              infoItem.setURL( basedir.getPath() );
  
              return new InfoScmResult( Collections.singletonList( infoItem ),
                                        new ScmResult( "JGit.resolve(HEAD)", "", objectId.toString(), true ) );
          }
          catch ( Exception e )
          {
              throw new ScmException( "JGit resolve failure!", e );
          }
          finally
          {
              JGitUtils.closeRepo( git );
          }
      }
  }