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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.entity.mime.content;
29  
30  import java.io.IOException;
31  import java.io.InputStream;
32  import java.io.OutputStream;
33  
34  import org.apache.http.entity.mime.MIME;
35  
36  /**
37   *
38   * @since 4.0
39   */
40  public class InputStreamBody extends AbstractContentBody {
41  
42      private final InputStream in;
43      private final String filename;
44  
45      public InputStreamBody(final InputStream in, final String mimeType, final String filename) {
46          super(mimeType);
47          if (in == null) {
48              throw new IllegalArgumentException("Input stream may not be null");
49          }
50          this.in = in;
51          this.filename = filename;
52      }
53  
54      public InputStreamBody(final InputStream in, final String filename) {
55          this(in, "application/octet-stream", filename);
56      }
57  
58      public InputStream getInputStream() {
59          return this.in;
60      }
61  
62      public void writeTo(final OutputStream out) throws IOException {
63          if (out == null) {
64              throw new IllegalArgumentException("Output stream may not be null");
65          }
66          try {
67              byte[] tmp = new byte[4096];
68              int l;
69              while ((l = this.in.read(tmp)) != -1) {
70                  out.write(tmp, 0, l);
71              }
72              out.flush();
73          } finally {
74              this.in.close();
75          }
76      }
77  
78      public String getTransferEncoding() {
79          return MIME.ENC_BINARY;
80      }
81  
82      public String getCharset() {
83          return null;
84      }
85  
86      public long getContentLength() {
87          return -1;
88      }
89  
90      public String getFilename() {
91          return this.filename;
92      }
93  
94  }