package org.apache.maven.scm.provider.cvslib.command.changelog;
   
   /*
    * 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 org.apache.maven.scm.ScmBranch;
  import org.apache.maven.scm.ScmException;
  import org.apache.maven.scm.ScmFileSet;
  import org.apache.maven.scm.ScmVersion;
  import org.apache.maven.scm.command.changelog.AbstractChangeLogCommand;
  import org.apache.maven.scm.command.changelog.ChangeLogScmResult;
  import org.apache.maven.scm.provider.ScmProviderRepository;
  import org.apache.maven.scm.provider.cvslib.command.CvsCommand;
  import org.apache.maven.scm.provider.cvslib.command.CvsCommandUtils;
  import org.apache.maven.scm.provider.cvslib.repository.CvsScmProviderRepository;
  import org.apache.maven.scm.provider.cvslib.util.CvsUtil;
  import org.codehaus.plexus.util.Os;
  import org.codehaus.plexus.util.StringUtils;
  import org.codehaus.plexus.util.cli.Commandline;
  
  import java.text.SimpleDateFormat;
  import java.util.Date;
  
  /**
   * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse </a>
   * @author <a href="mailto:trygvis@inamo.no">Trygve Laugst&oslash;l</a>
   *
   */
  public abstract class AbstractCvsChangeLogCommand
      extends AbstractChangeLogCommand
      implements CvsCommand
  {
      /** {@inheritDoc} */
      protected ChangeLogScmResult executeChangeLogCommand( ScmProviderRepository repo, ScmFileSet fileSet,
                                                            ScmVersion startVersion, ScmVersion endVersion,
                                                            String datePattern )
          throws ScmException
      {
          return executeChangeLogCommand( repo, fileSet, null, null, null, startVersion, endVersion, datePattern );
      }
  
      /** {@inheritDoc} */
      protected ChangeLogScmResult executeChangeLogCommand( ScmProviderRepository repo, ScmFileSet fileSet,
                                                            Date startDate, Date endDate, ScmBranch branch,
                                                            String datePattern )
          throws ScmException
      {
          return executeChangeLogCommand( repo, fileSet, startDate, endDate, branch, null, null, datePattern );
      }
  
      private ChangeLogScmResult executeChangeLogCommand( ScmProviderRepository repo, ScmFileSet fileSet, Date startDate,
                                                          Date endDate, ScmBranch branch, ScmVersion startVersion,
                                                          ScmVersion endVersion, String datePattern )
          throws ScmException
      {
          CvsScmProviderRepository repository = (CvsScmProviderRepository) repo;
  
          Commandline cl = CvsCommandUtils.getBaseCommand( "log", repository, fileSet );
  
          if ( startDate != null )
          {
              SimpleDateFormat outputDate = new SimpleDateFormat( getDateFormat() );
  
              String dateRange;
  
              if ( endDate == null )
              {
                  dateRange = ">" + outputDate.format( startDate );
              }
              else
              {
                  dateRange = outputDate.format( startDate ) + "<" + outputDate.format( endDate );
              }
  
              cl.createArg().setValue( "-d" );
  
              addDateRangeParameter( cl, dateRange );
          }
  
          if ( branch != null && StringUtils.isNotEmpty( branch.getName() ) )
          {
              cl.createArg().setValue( "-r" + branch.getName() );
          }
 
         if ( startVersion != null  || endVersion != null )
         {
             StringBuilder sb = new StringBuilder();
             sb.append( "-r" );
             if ( startVersion != null && StringUtils.isNotEmpty( startVersion.getName() ) )
             {
                 sb.append( startVersion.getName() );
             }
             sb.append( "::" );
             if ( endVersion != null && StringUtils.isNotEmpty( endVersion.getName() ) )
             {
                 sb.append( endVersion.getName() );
             }
 
             cl.createArg().setValue( sb.toString() );
         }
 
         if ( getLogger().isInfoEnabled() )
         {
             getLogger().info( "Executing: " + cl );
             getLogger().info( "Working directory: " + cl.getWorkingDirectory().getAbsolutePath() );
         }
 
         return executeCvsCommand( cl, startDate, endDate, startVersion, endVersion, datePattern );
     }
 
     protected abstract ChangeLogScmResult executeCvsCommand( Commandline cl, Date startDate, Date endDate,
                                                              ScmVersion startVersion, ScmVersion endVersion,
                                                              String datePattern )
         throws ScmException;
 
     protected String getDateFormat()
     {
         return CvsUtil.getSettings().getChangeLogCommandDateFormat();
     }
 
     protected void addDateRangeParameter( Commandline cl, String dateRange )
     {
         // There's a difference between UNIX-like OS and Windows
         // See http://jira.codehaus.org/browse/SCM-187
         if ( Os.isFamily( "windows" ) )
         {
             cl.createArg().setValue( "\"" + dateRange + "\"" );
         }
         else
         {
             cl.createArg().setValue( dateRange );
         }
     }
 }