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// Copyright (c) 2011 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 "ui/base/resource/resource_bundle.h"
#include "base/command_line.h"
#include "base/file_path.h"
#include "base/logging.h"
#include "base/stl_util.h"
#include "base/string16.h"
#include "base/string_piece.h"
#include "base/synchronization/lock.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/data_pack.h"
#include "ui/base/ui_base_switches.h"
#include "ui/gfx/font.h"
namespace ui {
namespace {
DataPack* LoadResourcesDataPak(FilePath resources_pak_path) {
DataPack* resources_pak = new DataPack;
bool success = resources_pak->Load(resources_pak_path);
if (!success) {
delete resources_pak;
resources_pak = NULL;
}
return resources_pak;
}
} // namespace
ResourceBundle::~ResourceBundle() {
FreeImages();
UnloadLocaleResources();
STLDeleteContainerPointers(data_packs_.begin(),
data_packs_.end());
delete resources_data_;
resources_data_ = NULL;
}
void ResourceBundle::UnloadLocaleResources() {
delete locale_resources_data_;
locale_resources_data_ = NULL;
}
// static
RefCountedStaticMemory* ResourceBundle::LoadResourceBytes(
DataHandle module, int resource_id) {
DCHECK(module);
return module->GetStaticMemory(resource_id);
}
base::StringPiece ResourceBundle::GetRawDataResource(int resource_id) const {
DCHECK(resources_data_);
base::StringPiece data;
if (!resources_data_->GetStringPiece(resource_id, &data)) {
if (!locale_resources_data_->GetStringPiece(resource_id, &data)) {
for (size_t i = 0; i < data_packs_.size(); ++i) {
if (data_packs_[i]->GetStringPiece(resource_id, &data))
return data;
}
return base::StringPiece();
}
}
return data;
}
string16 ResourceBundle::GetLocalizedString(int message_id) {
// If for some reason we were unable to load a resource pak, return an empty
// string (better than crashing).
if (!locale_resources_data_) {
LOG(WARNING) << "locale resources are not loaded";
return string16();
}
base::StringPiece data;
if (!locale_resources_data_->GetStringPiece(message_id, &data)) {
// Fall back on the main data pack (shouldn't be any strings here except in
// unittests).
data = GetRawDataResource(message_id);
if (data.empty()) {
NOTREACHED() << "unable to find resource: " << message_id;
return string16();
}
}
// Data pack encodes strings as UTF16.
DCHECK_EQ(data.length() % 2, 0U);
string16 msg(reinterpret_cast<const char16*>(data.data()),
data.length() / 2);
return msg;
}
void ResourceBundle::LoadCommonResources() {
DCHECK(!resources_data_) << "chrome.pak already loaded";
FilePath resources_file_path = GetResourcesFilePath();
CHECK(!resources_file_path.empty()) << "chrome.pak not found";
resources_data_ = LoadResourcesDataPak(resources_file_path);
CHECK(resources_data_) << "failed to load chrome.pak";
FilePath large_icon_resources_file_path = GetLargeIconResourcesFilePath();
if (!large_icon_resources_file_path.empty()) {
large_icon_resources_data_ =
LoadResourcesDataPak(large_icon_resources_file_path);
CHECK(large_icon_resources_data_) <<
"failed to load theme_resources_large.pak";
}
}
std::string ResourceBundle::LoadLocaleResources(
const std::string& pref_locale) {
DCHECK(!locale_resources_data_) << "locale.pak already loaded";
std::string app_locale = l10n_util::GetApplicationLocale(pref_locale);
FilePath locale_file_path;
CommandLine *command_line = CommandLine::ForCurrentProcess();
if (command_line->HasSwitch(switches::kLocalePak)) {
locale_file_path =
command_line->GetSwitchValuePath(switches::kLocalePak);
} else {
locale_file_path = GetLocaleFilePath(app_locale);
}
if (locale_file_path.empty()) {
// It's possible that there is no locale.pak.
NOTREACHED();
return std::string();
}
locale_resources_data_ = LoadResourcesDataPak(locale_file_path);
CHECK(locale_resources_data_) << "failed to load locale.pak";
return app_locale;
}
void ResourceBundle::LoadTestResources(const FilePath& path) {
DCHECK(!resources_data_) << "resource already loaded";
// Use the given resource pak for both common and localized resources.
resources_data_ = LoadResourcesDataPak(path);
locale_resources_data_ = LoadResourcesDataPak(path);
}
} // namespace ui
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