/**
    *
    * 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 javax.inject.Named;
  
  import java.io.IOException;
  
  import org.codehaus.plexus.archiver.AbstractArchiver;
  import org.codehaus.plexus.archiver.ArchiveEntry;
  import org.codehaus.plexus.archiver.ArchiverException;
  import org.codehaus.plexus.archiver.ResourceIterator;
  import org.codehaus.plexus.archiver.exceptions.EmptyArchiveException;
  
  @Named("gzip")
  public class GZipArchiver extends AbstractArchiver {
  
      final GZipCompressor compressor = new GZipCompressor();
  
      @Override
      protected void execute() throws ArchiverException, IOException {
          if (!checkForced()) {
              return;
          }
  
          ResourceIterator iter = getResources();
          if (!iter.hasNext()) {
              throw new EmptyArchiveException("archive cannot be empty");
          }
          ArchiveEntry entry = iter.next();
          if (iter.hasNext()) {
              throw new ArchiverException("There is more than one file in input.");
          }
          compressor.setSource(entry.getResource());
          compressor.setDestFile(getDestFile());
          compressor.compress();
      }
  
      @Override
      public boolean isSupportingForced() {
          return true;
      }
  
      @Override
      protected void close() {
          compressor.close();
      }
  
      @Override
      protected String getArchiveType() {
          return "gzip";
      }
  }