content: /*
   *  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.
   */
  package org.apache.causeway.core.webapp.modules.templresources;
  
  import java.io.FileInputStream;
  import java.io.FileNotFoundException;
  import java.io.InputStream;
  
  import jakarta.servlet.http.HttpServletRequest;
  
  import lombok.experimental.UtilityClass;
  
  @UtilityClass
  class _Util {
  
      /**
       * @param request
       * @return real-path resource from file-system, if any
       */
      InputStream getResourceAsStream(final HttpServletRequest request) {
          final String realPath = request.getSession().getServletContext().getRealPath(request.getServletPath());
          if (realPath == null) {
              return null;
          }
          try {
              return new FileInputStream(realPath);
          } catch (final FileNotFoundException e) {
              return null;
          }
      }
  
  }
  