package org.apache.maven.plugins.shade.resource;
   
   /*
    * 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 org.apache.maven.plugins.shade.relocation.Relocator;
  import org.codehaus.plexus.util.IOUtil;
  
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.List;
  import java.util.jar.JarEntry;
  import java.util.jar.JarOutputStream;
  
  /**
   * A resource processor that allows the addition of an arbitrary file
   * content into the shaded JAR.
   */
  public class IncludeResourceTransformer
      implements ResourceTransformer
  {
      File file;
  
      String resource;
  
      public boolean canTransformResource( String r )
      {
          return false;
      }
  
      public void processResource( String resource, InputStream is, List<Relocator> relocators )
          throws IOException
      {
          // no op
      }
  
      public boolean hasTransformedResource()
      {
          return file != null && file.exists();
      }
  
      public void modifyOutputStream( JarOutputStream jos )
          throws IOException
      {
          try ( InputStream in = new FileInputStream( file ) )
          {
              jos.putNextEntry( new JarEntry( resource ) );
              IOUtil.copy( in, jos );
          }
      }
      
      @Override
      public String toString()
      {
          return "IncludeResourceTransformer {resource: '" + resource + "'}";
      }
  }