package org.apache.maven.scm.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 java.text.SimpleDateFormat;
  import java.util.Date;
  import java.util.List;
  
  import org.apache.maven.scm.ChangeSet;
  import org.apache.maven.scm.ScmVersion;
  
  /**
   * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
   *
   */
  public class ChangeLogSet
  {
      public static final String DEFAULT_ENCODING = "ISO-8859-1";
  
      private List<ChangeSet> entries;
  
      private Date startDate;
  
      private Date endDate;
  
      private ScmVersion startVersion;
  
      private ScmVersion endVersion;
  
      /**
       * Initializes a new instance of this class.
       *
       * @param startDate the start date/tag for this set.
       * @param endDate   the end date/tag for this set, or <code>null</code> if this set goes to the present time.
       */
      public ChangeLogSet( Date startDate, Date endDate )
      {
          this.startDate = startDate;
          this.endDate = endDate;
      }
  
      /**
       * Initializes a new instance of this class.
       *
       * @param entries   collection of {@link org.apache.maven.scm.ChangeSet} objects for this set.
       * @param startDate the start date/tag for this set.
       * @param endDate   the end date/tag for this set, or <code>null</code> if this set goes to the present time.
       */
      public ChangeLogSet( List<ChangeSet> entries, Date startDate, Date endDate )
      {
          this( startDate, endDate );
          setChangeSets( entries );
      }
  
      /**
       * Returns the start date.
       *
       * @return the start date.
       */
      public Date getStartDate()
      {
          return startDate;
      }
  
      /**
       * Returns the end date for this set.
       *
       * @return the end date for this set, or <code>null</code> if this set goes to the present time.
       */
      public Date getEndDate()
      {
          return endDate;
      }
  
      /**
       * Returns the start version (revision/branch/label) for this set.
       *
       * @return the start version (revision/branch/label) for this set, or <code>null</code>.
       */
      public ScmVersion getStartVersion()
      {
          return startVersion;
     }
 
     public void setStartVersion( ScmVersion startVersion )
     {
         this.startVersion = startVersion;
     }
 
     /**
      * Returns the end version (revision/branch/label) for this set.
      *
      * @return the end version (revision/branch/label) for this set, or <code>null</code>.
      */
     public ScmVersion getEndVersion()
     {
         return endVersion;
     }
 
     public void setEndVersion( ScmVersion endVersion )
     {
         this.endVersion = endVersion;
     }
 
     /**
      * Returns the collection of changeSet.
      *
      * @return the collection of {@link org.apache.maven.scm.ChangeSet} objects for this set.
      */
     public List<ChangeSet> getChangeSets()
     {
         return entries;
     }
 
     public void setChangeSets( List<ChangeSet> changeSets )
     {
         this.entries = changeSets;
     }
 
     /**
      * Creates an XML representation of this change log set with a default encoding (ISO-8859-1).
      *
      * @return TODO
      */
     public String toXML()
     {
         return toXML( DEFAULT_ENCODING );
     }
 
     /**
      * Creates an XML representation of this change log set.
      *
      * @param encoding encoding of output
      * @return TODO
      */
     public String toXML( String encoding )
     {
         String encodingString = encoding;
 
         if ( encodingString == null )
         {
             encodingString = DEFAULT_ENCODING;
         }
 
         StringBuilder buffer = new StringBuilder();
         String pattern = "yyyyMMdd HH:mm:ss z";
         SimpleDateFormat formatter = new SimpleDateFormat( pattern );
 
         buffer.append( "<?xml version=\"1.0\" encoding=\"" + encodingString + "\"?>\n" );
         buffer.append( "<changeset datePattern=\"" )
             .append( pattern )
             .append( "\"" );
 
         if ( startDate != null )
         {
             buffer.append( " start=\"" )
                 .append( formatter.format( getStartDate() ) )
                 .append( "\"" );
         }
         if ( endDate != null )
         {
             buffer.append( " end=\"" )
                 .append( formatter.format( getEndDate() ) )
                 .append( "\"" );
         }
 
         if ( startVersion != null )
         {
             buffer.append( " startVersion=\"" )
                 .append( getStartVersion() )
                 .append( "\"" );
         }
         if ( endVersion != null )
         {
             buffer.append( " endVersion=\"" )
                 .append( getEndVersion() )
                 .append( "\"" );
         }
 
         buffer.append( ">\n" );
 
         //  Write out the entries
         for ( ChangeSet changeSet : getChangeSets() )
         {
             buffer.append( changeSet.toXML() );
         }
 
         buffer.append( "</changeset>\n" );
 
         return buffer.toString();
     }
 }