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
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
|
// 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 "chrome_frame/simple_resource_loader.h"
#include <atlbase.h>
#include <string>
#include "base/base_paths.h"
#include "base/file_path.h"
#include "base/file_util.h"
#include "base/path_service.h"
#include "base/i18n/rtl.h"
#include "base/string_util.h"
#include "base/utf_string_conversions.h"
#include "base/win_util.h"
const wchar_t kLocalesDirName[] = L"Locales";
HINSTANCE SimpleResourceLoader::locale_dll_handle_;
SimpleResourceLoader::SimpleResourceLoader() {
// Find and load the resource DLL.
std::wstring language;
std::wstring region;
GetSystemLocale(&language, ®ion);
FilePath locale_dll_path;
if (GetLocaleFilePath(language, region, &locale_dll_path)) {
DCHECK(locale_dll_handle_ == NULL) << "Locale DLL is already loaded!";
locale_dll_handle_ = LoadLocaleDll(locale_dll_path);
DCHECK(locale_dll_handle_ != NULL) << "Failed to load locale dll!";
}
}
SimpleResourceLoader::~SimpleResourceLoader() {}
void SimpleResourceLoader::GetSystemLocale(std::wstring* language,
std::wstring* region) {
DCHECK(language);
DCHECK(region);
std::string icu_language, icu_region;
base::i18n::GetLanguageAndRegionFromOS(&icu_language, &icu_region);
if (!icu_language.empty()) {
*language = ASCIIToWide(icu_language);
}
if (!icu_region.empty()) {
*region = ASCIIToWide(icu_region);
}
}
bool SimpleResourceLoader::GetLocaleFilePath(const std::wstring& language,
const std::wstring& region,
FilePath* file_path) {
DCHECK(file_path);
FilePath module_path;
PathService::Get(base::DIR_MODULE, &module_path);
FilePath locales_path = module_path.Append(kLocalesDirName);
// We may be residing in the "locales" directory's parent, or we might be
// in a sibling directory. Move up one and look for Locales again in the
// latter case.
if (!file_util::DirectoryExists(locales_path)) {
locales_path = module_path.DirName();
locales_path = locales_path.Append(kLocalesDirName);
}
bool found_dll = false;
if (file_util::DirectoryExists(locales_path)) {
std::wstring dll_name(language);
FilePath look_path;
// First look for the [language]-[region].DLL.
if (!region.empty()) {
dll_name += L"-";
dll_name += region;
dll_name += L".dll";
look_path = locales_path.Append(dll_name);
if (file_util::PathExists(look_path)) {
*file_path = look_path;
found_dll = true;
}
}
// Next look for just [language].DLL.
if (!found_dll) {
dll_name = language;
dll_name += L".dll";
look_path = locales_path.Append(dll_name);
if (file_util::PathExists(look_path)) {
*file_path = look_path;
found_dll = true;
}
}
// Finally, try defaulting to en-US.dll.
if (!found_dll) {
look_path = locales_path.Append(L"en-US.dll");
if (file_util::PathExists(look_path)) {
*file_path = look_path;
found_dll = true;
}
}
} else {
NOTREACHED() << "Could not locate locales DLL directory.";
}
return found_dll;
}
HINSTANCE SimpleResourceLoader::LoadLocaleDll(const FilePath& dll_path) {
DWORD load_flags = 0;
if (win_util::GetWinVersion() >= win_util::WINVERSION_VISTA) {
load_flags = LOAD_LIBRARY_AS_DATAFILE_EXCLUSIVE |
LOAD_LIBRARY_AS_IMAGE_RESOURCE;
} else {
load_flags = DONT_RESOLVE_DLL_REFERENCES;
}
// The dll should only have resources, not executable code.
HINSTANCE locale_dll_handle = LoadLibraryEx(dll_path.value().c_str(), NULL,
load_flags);
DCHECK(locale_dll_handle != NULL) << "unable to load generated resources: "
<< GetLastError();
return locale_dll_handle;
}
std::wstring SimpleResourceLoader::GetLocalizedResource(int message_id) {
if (!locale_dll_handle_) {
DLOG(ERROR) << "locale resources are not loaded";
return std::wstring();
}
DCHECK(IS_INTRESOURCE(message_id));
const ATLSTRINGRESOURCEIMAGE* image = AtlGetStringResourceImage(
locale_dll_handle_, message_id);
if (!image) {
// Fall back on the current module (shouldn't be any strings here except
// in unittests).
image = AtlGetStringResourceImage(_AtlBaseModule.GetModuleInstance(),
message_id);
if (!image) {
NOTREACHED() << "unable to find resource: " << message_id;
return std::wstring();
}
}
return std::wstring(image->achString, image->nLength);
}
// static
std::wstring SimpleResourceLoader::Get(int message_id) {
SimpleResourceLoader* loader = SimpleResourceLoader::instance();
return loader->GetLocalizedResource(message_id);
}
HINSTANCE SimpleResourceLoader::GetResourceModuleHandle() {
return locale_dll_handle_;
}
|
