package org.apache.maven.plugin.ejb.utils;
   
   /*
    * 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.io.IOException;
  import java.io.InputStream;
  import java.util.Enumeration;
  import java.util.HashMap;
  import java.util.Iterator;
  import java.util.jar.JarFile;
  import java.util.zip.ZipEntry;
  
  /**
   * Jar Content Checker
   */
  public class JarContentChecker
  {
      private final static String FOUND = "1";
  
      private final static String NOT_FOUND = "0";
  
      private HashMap fileMap;
  
      private HashMap directoryMap;
  
      private HashMap dataMap;
  
  
      public JarContentChecker()
      {
          fileMap = new HashMap();
          directoryMap = new HashMap();
          dataMap = new HashMap();
      }
  
      public void addDirectory( File dir )
      {
          directoryMap.put( dir, NOT_FOUND );
      }
  
      public void addFile( File file )
      {
          fileMap.put( file, NOT_FOUND );
      }
  
      public void addFile( String file, String data )
      {
          fileMap.put( file, NOT_FOUND );
          dataMap.put( file, data );
      }
  
  
      /**
       * checks whether the jar file contains the files for this checker,
       * files with the same file name but with different data will not
       * be considered.
       *
       * @param jarFile
       * @return boolean
       */
      public boolean isOK( JarFile jarFile )
      {
          boolean bRetVal;
          Enumeration zipentries = jarFile.entries();
          ZipEntry entry;
          File entryFile;
  
          resetList();
  
          while ( zipentries.hasMoreElements() )
          {
              entry = (ZipEntry) zipentries.nextElement();
              entryFile = new File( entry.getName() );
  
              if ( entry.isDirectory() )
              {
                  // cross out all files found in the jar file
                  // found files with incorrect content will not
                  // be counted
                  if ( directoryMap.containsKey( entryFile ) )
                  {
                     directoryMap.put( entryFile, FOUND );
                 }
             }
             else if ( fileMap.containsKey( entryFile ) )
             {
                 try
                 {
                     if ( checkContent( entryFile, jarFile.getInputStream( entry ) ) )
                     {
                         fileMap.put( entryFile, FOUND );
                     }
                 }
                 catch ( IOException ex )
                 {
                     // TODO: handle exception
                 }
             }
         }
 
         bRetVal = checkFinalResult();
 
         return bRetVal;
     }
 
 
     private boolean checkContent( File file, InputStream istream )
     {
         boolean bRetVal = true;
 
         if ( dataMap.containsKey( file ) )
         {
             // TODO: do content checking here
         }
 
         return bRetVal;
     }
 
     private boolean checkFinalResult()
     {
         boolean bRetVal = true;
 
         Iterator keys = fileMap.keySet().iterator();
 
         while ( keys.hasNext() && bRetVal )
         {
             if ( fileMap.get( keys.next() ).equals( NOT_FOUND ) )
             {
                 bRetVal = false;
             }
         }
 
         keys = directoryMap.keySet().iterator();
 
         while ( keys.hasNext() && bRetVal )
         {
             if ( directoryMap.get( keys.next() ).equals( NOT_FOUND ) )
             {
                 bRetVal = false;
             }
         }
 
         return bRetVal;
     }
 
     private void resetList()
     {
         Iterator keys = fileMap.keySet().iterator();
 
         while ( keys.hasNext() )
         {
             fileMap.put( keys.next(), NOT_FOUND );
         }
 
         keys = directoryMap.keySet().iterator();
 
         while ( keys.hasNext() )
         {
             directoryMap.put( keys.next(), NOT_FOUND );
         }
     }
 }