| /* |
| * 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.freemarker.generator.base.activation; |
| |
| import javax.activation.DataSource; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| |
| import static java.util.Objects.requireNonNull; |
| import static org.apache.freemarker.generator.base.activation.Mimetypes.MIME_APPLICATION_OCTET_STREAM; |
| |
| /** |
| * Wraps an InputStream into a DataSource. Please note that the input stream |
| * is not buffered and can be consumed only once to support streaming of |
| * arbitrary large amount of data. |
| */ |
| public class InputStreamDataSource implements DataSource { |
| |
| private final String name; |
| private final InputStream is; |
| private final String contentType; |
| |
| public InputStreamDataSource(String name, InputStream is) { |
| this(name, is, MIME_APPLICATION_OCTET_STREAM); |
| } |
| |
| public InputStreamDataSource(String name, InputStream is, String contentType) { |
| this.name = requireNonNull(name); |
| this.is = requireNonNull(is); |
| this.contentType = requireNonNull(contentType); |
| } |
| |
| @Override |
| public InputStream getInputStream() { |
| return is; |
| } |
| |
| @Override |
| public OutputStream getOutputStream() { |
| return null; |
| } |
| |
| @Override |
| public String getContentType() { |
| return contentType; |
| } |
| |
| @Override |
| public String getName() { |
| return name; |
| } |
| |
| @Override |
| public String toString() { |
| return "InputStreamDataSource{" + |
| "name='" + name + '\'' + |
| ", contentType='" + contentType + '\'' + |
| ", inputStream=" + is.getClass().getName() + |
| '}'; |
| } |
| } |
| |