Coverage Report - org.codehaus.plexus.archiver.util.Compressor
 
Classes in this File Line Coverage Branch Coverage Complexity
Compressor
100%
21/21
100%
2/2
1,125
 
 1  
 /**
 2  
  *
 3  
  * Copyright 2004 The Apache Software Foundation
 4  
  *
 5  
  * Licensed under the Apache License, Version 2.0 (the "License");
 6  
  * you may not use this file except in compliance with the License.
 7  
  * You may obtain a copy of the License at
 8  
  *
 9  
  * http://www.apache.org/licenses/LICENSE-2.0
 10  
  *
 11  
  * Unless required by applicable law or agreed to in writing, software
 12  
  * distributed under the License is distributed on an "AS IS" BASIS,
 13  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 14  
  * See the License for the specific language governing permissions and
 15  
  * limitations under the License.
 16  
  */
 17  
 package org.codehaus.plexus.archiver.util;
 18  
 
 19  
 import java.io.File;
 20  
 import java.io.IOException;
 21  
 import java.io.InputStream;
 22  
 import java.io.OutputStream;
 23  
 import org.codehaus.plexus.archiver.ArchiverException;
 24  
 import org.codehaus.plexus.components.io.resources.PlexusIoResource;
 25  
 import org.codehaus.plexus.logging.AbstractLogEnabled;
 26  
 import org.codehaus.plexus.util.IOUtil;
 27  
 
 28  36
 public abstract class Compressor
 29  
     extends AbstractLogEnabled
 30  
 {
 31  
 
 32  
     private File destFile;
 33  
 
 34  
     private PlexusIoResource source;
 35  
 
 36  
     /**
 37  
      * the required destination file.
 38  
      *
 39  
      * @param compressFile
 40  
      */
 41  
     public void setDestFile( File compressFile )
 42  
     {
 43  26
         this.destFile = compressFile;
 44  26
     }
 45  
 
 46  
     public File getDestFile()
 47  
     {
 48  26
         return destFile;
 49  
     }
 50  
 
 51  
     /**
 52  
      * The resource to compress; required.
 53  
      */
 54  
     public void setSource( PlexusIoResource source )
 55  
     {
 56  26
         this.source = source;
 57  26
     }
 58  
 
 59  
     /**
 60  
      * The resource to compress; required.
 61  
      */
 62  
     public PlexusIoResource getSource()
 63  
     {
 64  26
         return source;
 65  
     }
 66  
 
 67  
     /**
 68  
      * compress a stream to an output stream
 69  
      *
 70  
      * @param in
 71  
      * @param zOut
 72  
      *
 73  
      * @throws IOException
 74  
      */
 75  
     private void compressFile( InputStream in, OutputStream zOut )
 76  
         throws IOException
 77  
     {
 78  26
         byte[] buffer = new byte[ 8 * 1024 ];
 79  26
         int count = 0;
 80  
         do
 81  
         {
 82  1012
             zOut.write( buffer, 0, count );
 83  1012
             count = in.read( buffer, 0, buffer.length );
 84  
         }
 85  1012
         while ( count != -1 );
 86  26
     }
 87  
 
 88  
     /**
 89  
      * compress a resource to an output stream
 90  
      */
 91  
     protected void compress( PlexusIoResource resource, OutputStream zOut )
 92  
         throws IOException
 93  
     {
 94  26
         InputStream in = null;
 95  
         try
 96  
         {
 97  26
             in = Streams.bufferedInputStream( resource.getContents() );
 98  26
             compressFile( in, zOut );
 99  26
             in.close();
 100  26
             in = null;
 101  
         }
 102  
         finally
 103  
         {
 104  26
             IOUtil.close( in );
 105  26
         }
 106  26
     }
 107  
 
 108  
     /**
 109  
      * subclasses must implement this method to do their compression
 110  
      *
 111  
      * this is public so the process of compression and closing can be dealt with separately.
 112  
      */
 113  
     public abstract void compress()
 114  
         throws ArchiverException;
 115  
 
 116  
     /**
 117  
      * subclasses must implement this method to cleanup after compression
 118  
      *
 119  
      * this is public so the process of compression and closing can be dealt with separately.
 120  
      */
 121  
     public abstract void close()
 122  
         throws ArchiverException;
 123  
 
 124  
 }