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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;
29  
30  import java.io.IOException;
31  import java.io.OutputStream;
32  import java.nio.charset.Charset;
33  import java.util.List;
34  
35  /**
36   * HttpBrowserCompatibleMultipart represents a collection of MIME multipart encoded
37   * content bodies. This class is emulates browser compatibility, e.g. IE 5 or earlier.
38   *
39   * @since 4.3
40   */
41  class HttpBrowserCompatibleMultipart extends AbstractMultipartForm {
42  
43      private final List<FormBodyPart> parts;
44  
45      public HttpBrowserCompatibleMultipart(
46              final String subType,
47              final Charset charset,
48              final String boundary,
49              final List<FormBodyPart> parts) {
50          super(subType, charset, boundary);
51          this.parts = parts;
52      }
53  
54      @Override
55      public List<FormBodyPart> getBodyParts() {
56          return this.parts;
57      }
58  
59      /**
60        * Write the multipart header fields; depends on the style.
61        */
62      @Override
63      protected void formatMultipartHeader(
64              final FormBodyPart part,
65              final OutputStream out) throws IOException {
66          // For browser-compatible, only write Content-Disposition
67          // Use content charset
68          final Header header = part.getHeader();
69          final MinimalField cd = header.getField(MIME.CONTENT_DISPOSITION);
70          writeField(cd, this.charset, out);
71          final String filename = part.getBody().getFilename();
72          if (filename != null) {
73              final MinimalField ct = header.getField(MIME.CONTENT_TYPE);
74              writeField(ct, this.charset, out);
75          }
76  
77      }
78  
79  }