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1   /*
2    * ====================================================================
3    * Licensed to the Apache Software Foundation (ASF) under one
4    * or more contributor license agreements.  See the NOTICE file
5    * distributed with this work for additional information
6    * regarding copyright ownership.  The ASF licenses this file
7    * to you under the Apache License, Version 2.0 (the
8    * "License"); you may not use this file except in compliance
9    * with the License.  You may obtain a copy of the License at
10   *
11   *   http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing,
14   * software distributed under the License is distributed on an
15   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16   * KIND, either express or implied.  See the License for the
17   * specific language governing permissions and limitations
18   * under the License.
19   * ====================================================================
20   *
21   * This software consists of voluntary contributions made by many
22   * individuals on behalf of the Apache Software Foundation.  For more
23   * information on the Apache Software Foundation, please see
24   * <http://www.apache.org/>.
25   *
26   */
27  
28  package org.apache.http.nio.entity;
29  
30  import java.io.IOException;
31  import java.io.OutputStream;
32  
33  import org.apache.http.nio.util.ContentOutputBuffer;
34  import org.apache.http.util.Args;
35  
36  /**
37   * {@link OutputStream} adaptor for {@link ContentOutputBuffer}.
38   *
39   * @since 4.0
40   */
41  public class ContentOutputStream extends OutputStream {
42  
43      private final ContentOutputBuffer buffer;
44  
45      public ContentOutputStream(final ContentOutputBuffer buffer) {
46          super();
47          Args.notNull(buffer, "Output buffer");
48          this.buffer = buffer;
49      }
50  
51      @Override
52      public void close() throws IOException {
53          this.buffer.writeCompleted();
54      }
55  
56      @Override
57      public void flush() throws IOException {
58      }
59  
60      @Override
61      public void write(final byte[] b, final int off, final int len) throws IOException {
62          this.buffer.write(b, off, len);
63      }
64  
65      @Override
66      public void write(final byte[] b) throws IOException {
67          if (b == null) {
68              return;
69          }
70          this.buffer.write(b, 0, b.length);
71      }
72  
73      @Override
74      public void write(final int b) throws IOException {
75          this.buffer.write(b);
76      }
77  
78  }