content: /*
   * Copyright 2010-2025 Hyland Software, Inc. and its affiliates.
   *
   * 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.activiti.engine.impl.util.io;
  
  import java.io.BufferedInputStream;
  import java.io.InputStream;
  import org.activiti.engine.ActivitiIllegalArgumentException;
  import org.activiti.engine.impl.util.ReflectUtil;
  
  /**
  
  
   */
  public class ResourceStreamSource implements StreamSource {
  
      String resource;
      ClassLoader classLoader;
  
      public ResourceStreamSource(String resource) {
          this.resource = resource;
      }
  
      public ResourceStreamSource(String resource, ClassLoader classLoader) {
          this.resource = resource;
          this.classLoader = classLoader;
      }
  
      public InputStream getInputStream() {
          InputStream inputStream = null;
          if (classLoader == null) {
              inputStream = ReflectUtil.getResourceAsStream(resource);
          } else {
              inputStream = classLoader.getResourceAsStream(resource);
          }
          if (inputStream == null) {
              throw new ActivitiIllegalArgumentException("resource '" + resource + "' doesn't exist");
          }
          return new BufferedInputStream(inputStream);
      }
  
      public String toString() {
          return "Resource[" + resource + "]";
      }
  }
  