mobile/android/thirdparty/ch/boye/httpclientandroidlib/client/protocol/ResponseContentEncoding.java@b8a032363ba2
mobile/android/thirdparty/ch/boye/httpclientandroidlib/client/protocol/ResponseContentEncoding.java
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
1 /*
2 * ====================================================================
3 *
4 * Licensed to the Apache Software Foundation (ASF) under one or more
5 * contributor license agreements. See the NOTICE file distributed with
6 * this work for additional information regarding copyright ownership.
7 * The ASF licenses this file to You under the Apache License, Version 2.0
8 * (the "License"); you may not use this file except in compliance with
9 * 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, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ====================================================================
19 *
20 * This software consists of voluntary contributions made by many
21 * individuals on behalf of the Apache Software Foundation. For more
22 * information on the Apache Software Foundation, please see
23 * <http://www.apache.org/>.
24 *
25 */
27 package ch.boye.httpclientandroidlib.client.protocol;
29 import java.io.IOException;
30 import java.util.Locale;
32 import ch.boye.httpclientandroidlib.Header;
33 import ch.boye.httpclientandroidlib.HeaderElement;
34 import ch.boye.httpclientandroidlib.HttpEntity;
35 import ch.boye.httpclientandroidlib.HttpException;
36 import ch.boye.httpclientandroidlib.HttpResponse;
37 import ch.boye.httpclientandroidlib.HttpResponseInterceptor;
38 import ch.boye.httpclientandroidlib.annotation.Immutable;
39 import ch.boye.httpclientandroidlib.client.entity.DeflateDecompressingEntity;
40 import ch.boye.httpclientandroidlib.client.entity.GzipDecompressingEntity;
41 import ch.boye.httpclientandroidlib.protocol.HttpContext;
43 /**
44 * {@link HttpResponseInterceptor} responsible for processing Content-Encoding
45 * responses.
46 * <p>
47 * Instances of this class are stateless and immutable, therefore threadsafe.
48 *
49 * @since 4.1
50 *
51 */
52 @Immutable
53 public class ResponseContentEncoding implements HttpResponseInterceptor {
55 /**
56 * Handles the following {@code Content-Encoding}s by
57 * using the appropriate decompressor to wrap the response Entity:
58 * <ul>
59 * <li>gzip - see {@link GzipDecompressingEntity}</li>
60 * <li>deflate - see {@link DeflateDecompressingEntity}</li>
61 * <li>identity - no action needed</li>
62 * </ul>
63 *
64 * @param response the response which contains the entity
65 * @param context not currently used
66 *
67 * @throws HttpException if the {@code Content-Encoding} is none of the above
68 */
69 public void process(
70 final HttpResponse response,
71 final HttpContext context) throws HttpException, IOException {
72 HttpEntity entity = response.getEntity();
74 // It wasn't a 304 Not Modified response, 204 No Content or similar
75 if (entity != null) {
76 Header ceheader = entity.getContentEncoding();
77 if (ceheader != null) {
78 HeaderElement[] codecs = ceheader.getElements();
79 for (HeaderElement codec : codecs) {
80 String codecname = codec.getName().toLowerCase(Locale.US);
81 if ("gzip".equals(codecname) || "x-gzip".equals(codecname)) {
82 response.setEntity(new GzipDecompressingEntity(response.getEntity()));
83 return;
84 } else if ("deflate".equals(codecname)) {
85 response.setEntity(new DeflateDecompressingEntity(response.getEntity()));
86 return;
87 } else if ("identity".equals(codecname)) {
89 /* Don't need to transform the content - no-op */
90 return;
91 } else {
92 throw new HttpException("Unsupported Content-Coding: " + codec.getName());
93 }
94 }
95 }
96 }
97 }
99 }
