blob: 0ab13522187019ec14d41ae6f1eda0b29f7b155d [file] [log] [blame]
// Copyright (c) 2012 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.
// This file defines utility functions for fetching localized resources.
#include "chrome/installer/util/l10n_string_util.h"
#include <stdint.h>
#include <algorithm>
#include <limits>
#include <memory>
#include "base/bind.h"
#include "base/logging.h"
#include "base/no_destructor.h"
#include "base/stl_util.h"
#include "base/strings/string16.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/win/atl.h"
#include "base/win/embedded_i18n/language_selector.h"
#include "chrome/install_static/install_details.h"
#include "chrome/install_static/install_modes.h"
#include "chrome/installer/util/google_update_settings.h"
#include "chrome/installer/util/installer_util_strings.h"
namespace {
constexpr base::win::i18n::LanguageSelector::LangToOffset
kLanguageOffsetPairs[] = {
#define HANDLE_LANGUAGE(l_, o_) {L## #l_, o_},
// Returns the language under which Chrome was downloaded, or an empty string if
// no such language is specified.
base::string16 GetPreferredLanguageFromGoogleUpdate() {
base::string16 language;
return language;
const base::win::i18n::LanguageSelector& GetLanguageSelector() {
static base::NoDestructor<base::win::i18n::LanguageSelector> instance(
GetPreferredLanguageFromGoogleUpdate(), kLanguageOffsetPairs);
return *instance;
installer::TranslationDelegate* g_translation_delegate = NULL;
} // namespace
namespace installer {
TranslationDelegate::~TranslationDelegate() {
void SetTranslationDelegate(TranslationDelegate* delegate) {
g_translation_delegate = delegate;
std::wstring GetLocalizedString(int base_message_id) {
// Map |base_message_id| to the base id for the current install mode.
base_message_id = GetBaseMessageIdForMode(base_message_id);
if (g_translation_delegate)
return g_translation_delegate->GetLocalizedString(base_message_id);
std::wstring localized_string;
int message_id = base_message_id + GetLanguageSelector().offset();
const ATLSTRINGRESOURCEIMAGE* image = AtlGetStringResourceImage(
_AtlBaseModule.GetModuleInstance(), message_id);
if (image) {
localized_string = std::wstring(image->achString, image->nLength);
} else {
NOTREACHED() << "Unable to find resource id " << message_id;
return localized_string;
base::string16 GetLocalizedStringF(int base_message_id,
const base::string16& a) {
return base::ReplaceStringPlaceholders(
std::vector<base::string16>(1, a),
// Here we generate the url spec with the Microsoft res:// scheme which is
// explained here :
std::wstring GetLocalizedEulaResource() {
wchar_t full_exe_path[MAX_PATH];
int len = ::GetModuleFileName(NULL, full_exe_path, MAX_PATH);
if (len == 0 || len == MAX_PATH)
return L"";
// The resource names are more or less the upcased language names.
base::string16 language(GetLanguageSelector().selected_translation());
std::replace(language.begin(), language.end(), L'-', L'_');
language = base::ToUpperASCII(language);
std::wstring resource(L"IDR_OEMPG_");
// Fall back on "en" if we don't have a resource for this language.
if (NULL == FindResource(NULL, resource.c_str(), RT_HTML))
resource = L"IDR_OEMPG_EN.HTML";
// Spaces and DOS paths must be url encoded.
std::wstring url_path =
base::StringPrintf(L"res://%ls/#23/%ls", full_exe_path, resource.c_str());
// The cast is safe because url_path has limited length
// (see the definition of full_exe_path and resource).
DCHECK(std::numeric_limits<uint32_t>::max() > (url_path.size() * 3));
DWORD count = static_cast<DWORD>(url_path.size() * 3);
std::unique_ptr<wchar_t[]> url_canon(new wchar_t[count]);
HRESULT hr = ::UrlCanonicalizeW(url_path.c_str(), url_canon.get(),
if (SUCCEEDED(hr))
return std::wstring(url_canon.get());
return url_path;
std::wstring GetCurrentTranslation() {
return GetLanguageSelector().selected_translation();
int GetBaseMessageIdForMode(int base_message_id) {
// Generate the constants holding the mode-specific resource ID arrays.
#define HANDLE_MODE_STRING(id, ...) \
static constexpr int k##id##Strings[] = {__VA_ARGS__}; \
static_assert( \
base::size(k##id##Strings) == install_static::NUM_INSTALL_MODES, \
"resource " #id \
" has the wrong number of mode-specific " \
const int* mode_strings = nullptr;
switch (base_message_id) {
// Generate the cases mapping each mode-specific resource ID to its array.
#define HANDLE_MODE_STRING(id, ...) \
case id: \
mode_strings = &k##id##Strings[0]; \
// This ID has no per-mode variants.
return base_message_id;
// Return the variant of |base_message_id| for the current mode.
return mode_strings[install_static::InstallDetails::Get()
} // namespace installer