1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/win/i18n.h"
#include <windows.h>
#include "base/check_op.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
namespace {
using GetPreferredUILanguages_Fn = decltype(::GetSystemPreferredUILanguages)*;
bool GetPreferredUILanguageList(GetPreferredUILanguages_Fn function,
ULONG flags,
std::vector<std::wstring>* languages) {
DCHECK_EQ((flags & (MUI_LANGUAGE_ID | MUI_LANGUAGE_NAME)), 0U);
const ULONG call_flags = flags | MUI_LANGUAGE_NAME;
ULONG language_count = 0;
ULONG buffer_length = 0;
if (!function(call_flags, &language_count, nullptr, &buffer_length) ||
!buffer_length) {
DPCHECK(!buffer_length) << "Failed getting size of preferred UI languages.";
return false;
}
std::wstring buffer(buffer_length, '\0');
if (!function(call_flags, &language_count, base::data(buffer),
&buffer_length) ||
!language_count) {
DPCHECK(!language_count) << "Failed getting preferred UI languages.";
return false;
}
languages->clear();
// Split string on NUL characters.
for (const auto& token : base::SplitStringPiece(
base::AsStringPiece16(buffer), base::string16(1, '\0'),
base::KEEP_WHITESPACE, base::SPLIT_WANT_NONEMPTY)) {
languages->push_back(base::AsWString(token));
}
DCHECK_EQ(languages->size(), language_count);
return true;
}
} // namespace
namespace base {
namespace win {
namespace i18n {
bool GetUserPreferredUILanguageList(std::vector<std::wstring>* languages) {
DCHECK(languages);
return GetPreferredUILanguageList(::GetUserPreferredUILanguages, 0,
languages);
}
bool GetThreadPreferredUILanguageList(std::vector<std::wstring>* languages) {
DCHECK(languages);
return GetPreferredUILanguageList(
::GetThreadPreferredUILanguages,
MUI_MERGE_SYSTEM_FALLBACK | MUI_MERGE_USER_FALLBACK, languages);
}
} // namespace i18n
} // namespace win
} // namespace base
|
