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1 // Copyright (c) 2016 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef NET_HTTP_HTTP_UTIL_ICU_H_ | |
6 #define NET_HTTP_HTTP_UTIL_ICU_H_ | |
7 | |
8 #include <string> | |
9 | |
10 #include "net/base/net_export.h" | |
11 | |
12 namespace net { | |
13 | |
14 class NET_EXPORT HttpUtilIcu { | |
15 public: | |
16 // Given a comma separated ordered list of language codes, return | |
Seigo Nonaka
2016/12/12 01:48:54
nit: continue line until 80 chars.
Yirui Huang
2016/12/12 06:50:41
Done.
| |
17 // the list with a qvalue appended to each language. | |
18 // The way qvalues are assigned is rather simple. The qvalue | |
19 // starts with 1.0 and is decremented by 0.2 for each successive entry | |
20 // in the list until it reaches 0.2. All the entries after that are | |
21 // assigned the same qvalue of 0.2. Also, note that the 1st language | |
22 // will not have a qvalue added because the absence of a qvalue implicitly | |
23 // means q=1.0. | |
24 // | |
25 // When making a http request, this should be used to determine what | |
26 // to put in Accept-Language header. If a comma separated list of language | |
27 // codes *without* qvalue is sent, web servers regard all | |
28 // of them as having q=1.0 and pick one of them even though it may not | |
29 // be at the beginning of the list (see http://crbug.com/5899). | |
30 static std::string GenerateAcceptLanguageHeader( | |
31 const std::string& raw_language_list); | |
32 }; | |
33 } // namespace net | |
34 | |
35 #endif // NET_HTTP_HTTP_UTIL_ICU_H_ | |
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