/**
    *
    * Copyright 2004 The Apache Software Foundation
    *
    * Licensed 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.
   */
  package org.codehaus.plexus.archiver.gzip;
  
  import java.io.IOException;
  import java.io.OutputStream;
  import java.util.zip.GZIPOutputStream;
  
  import org.codehaus.plexus.archiver.ArchiverException;
  import org.codehaus.plexus.archiver.util.Compressor;
  
  import static org.codehaus.plexus.archiver.util.Streams.bufferedOutputStream;
  import static org.codehaus.plexus.archiver.util.Streams.fileOutputStream;
  
  public class GZipCompressor extends Compressor {
  
      private OutputStream zOut;
  
      /**
       * perform the GZip compression operation.
       */
      @Override
      public void compress() throws ArchiverException {
          try {
              zOut = bufferedOutputStream(new GZIPOutputStream(fileOutputStream(getDestFile())));
              compress(getSource(), zOut);
          } catch (IOException ioe) {
              String msg = "Problem creating gzip " + ioe.getMessage();
              throw new ArchiverException(msg, ioe);
          }
      }
  
      @Override
      public void close() {
          try {
              if (this.zOut != null) {
                  this.zOut.close();
                  zOut = null;
              }
          } catch (final IOException e) {
              throw new ArchiverException("Failure closing target.", e);
          }
      }
  }