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// 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.
#include "ui/base/resource/resource_bundle_android.h"
#include "base/android/apk_assets.h"
#include "base/android/jni_android.h"
#include "base/android/jni_string.h"
#include "base/logging.h"
#include "base/memory/ptr_util.h"
#include "base/path_service.h"
#include "jni/ResourceBundle_jni.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/data_pack.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/base/ui_base_paths.h"
namespace ui {
namespace {
bool g_locale_paks_in_apk = false;
bool g_load_secondary_locale_paks = false;
// It is okay to cache and share these file descriptors since the
// ResourceBundle singleton never closes the handles.
int g_chrome_100_percent_fd = -1;
int g_resources_pack_fd = -1;
int g_locale_pack_fd = -1;
int g_secondary_locale_pack_fd = -1;
base::MemoryMappedFile::Region g_chrome_100_percent_region;
base::MemoryMappedFile::Region g_resources_pack_region;
base::MemoryMappedFile::Region g_locale_pack_region;
base::MemoryMappedFile::Region g_secondary_locale_pack_region;
bool LoadFromApkOrFile(const char* apk_path,
const base::FilePath* disk_path,
int* out_fd,
base::MemoryMappedFile::Region* out_region) {
DCHECK_EQ(*out_fd, -1) << "Attempt to load " << apk_path << " twice.";
if (apk_path != nullptr) {
*out_fd = base::android::OpenApkAsset(apk_path, out_region);
}
// For unit tests, the file exists on disk.
if (*out_fd < 0 && disk_path != nullptr) {
int flags = base::File::FLAG_OPEN | base::File::FLAG_READ;
*out_fd = base::File(*disk_path, flags).TakePlatformFile();
*out_region = base::MemoryMappedFile::Region::kWholeFile;
}
bool success = *out_fd >= 0;
if (!success) {
LOG(ERROR) << "Failed to open pak file: " << apk_path;
}
return success;
}
int LoadLocalePakFromApk(const std::string& app_locale,
base::MemoryMappedFile::Region* out_region) {
std::string locale_path_within_apk =
GetPathForAndroidLocalePakWithinApk(app_locale);
if (locale_path_within_apk.empty()) {
LOG(WARNING) << "locale_path_within_apk.empty() for locale "
<< app_locale;
return -1;
}
return base::android::OpenApkAsset(locale_path_within_apk, out_region);
}
std::unique_ptr<DataPack> LoadDataPackFromLocalePak(
int locale_pack_fd,
const base::MemoryMappedFile::Region& region) {
auto data_pack = std::make_unique<DataPack>(SCALE_FACTOR_100P);
if (!data_pack->LoadFromFileRegion(base::File(locale_pack_fd), region)) {
LOG(WARNING) << "failed to load locale.pak";
NOTREACHED();
return nullptr;
}
return data_pack;
}
} // namespace
void ResourceBundle::LoadCommonResources() {
base::FilePath disk_path;
PathService::Get(ui::DIR_RESOURCE_PAKS_ANDROID, &disk_path);
disk_path = disk_path.AppendASCII("chrome_100_percent.pak");
if (LoadFromApkOrFile("assets/chrome_100_percent.pak",
&disk_path,
&g_chrome_100_percent_fd,
&g_chrome_100_percent_region)) {
AddDataPackFromFileRegion(base::File(g_chrome_100_percent_fd),
g_chrome_100_percent_region, SCALE_FACTOR_100P);
}
}
bool ResourceBundle::LocaleDataPakExists(const std::string& locale) {
if (g_locale_paks_in_apk) {
return !GetPathForAndroidLocalePakWithinApk(locale).empty();
}
return !GetLocaleFilePath(locale, true).empty();
}
std::string ResourceBundle::LoadLocaleResources(
const std::string& pref_locale) {
DCHECK(!locale_resources_data_.get() &&
!secondary_locale_resources_data_.get())
<< "locale.pak already loaded";
if (g_locale_pack_fd != -1) {
LOG(WARNING)
<< "Unexpected (outside of tests): Loading a second locale pak file.";
}
std::string app_locale = l10n_util::GetApplicationLocale(pref_locale);
// Load primary locale .pak file.
if (g_locale_paks_in_apk) {
g_locale_pack_fd = LoadLocalePakFromApk(app_locale, &g_locale_pack_region);
} else {
base::FilePath locale_file_path = GetOverriddenPakPath();
if (locale_file_path.empty())
locale_file_path = GetLocaleFilePath(app_locale, true);
if (locale_file_path.empty()) {
// It's possible that there is no locale.pak.
LOG(WARNING) << "locale_file_path.empty() for locale " << app_locale;
return std::string();
}
int flags = base::File::FLAG_OPEN | base::File::FLAG_READ;
g_locale_pack_fd = base::File(locale_file_path, flags).TakePlatformFile();
g_locale_pack_region = base::MemoryMappedFile::Region::kWholeFile;
}
locale_resources_data_ = LoadDataPackFromLocalePak(
g_locale_pack_fd, g_locale_pack_region);
if (!locale_resources_data_.get())
return std::string();
// Load secondary locale .pak file if it exists. For debug build monochrome,
// a secondary locale pak will always be loaded; however, it should be
// unnecessary for loading locale resources because the primary locale pak
// would have a copy of all the resources in the secondary locale pak.
if (g_load_secondary_locale_paks) {
g_secondary_locale_pack_fd = LoadLocalePakFromApk(
app_locale, &g_secondary_locale_pack_region);
secondary_locale_resources_data_ = LoadDataPackFromLocalePak(
g_secondary_locale_pack_fd, g_secondary_locale_pack_region);
if (!secondary_locale_resources_data_.get())
return std::string();
}
return app_locale;
}
gfx::Image& ResourceBundle::GetNativeImageNamed(int resource_id) {
return GetImageNamed(resource_id);
}
void SetLocalePaksStoredInApk(bool value) {
g_locale_paks_in_apk = value;
}
void SetLoadSecondaryLocalePaks(bool value) {
g_load_secondary_locale_paks = value;
}
void LoadMainAndroidPackFile(const char* path_within_apk,
const base::FilePath& disk_file_path) {
if (LoadFromApkOrFile(path_within_apk,
&disk_file_path,
&g_resources_pack_fd,
&g_resources_pack_region)) {
ResourceBundle::GetSharedInstance().AddDataPackFromFileRegion(
base::File(g_resources_pack_fd), g_resources_pack_region,
SCALE_FACTOR_NONE);
}
}
int GetMainAndroidPackFd(base::MemoryMappedFile::Region* out_region) {
DCHECK_GE(g_resources_pack_fd, 0);
*out_region = g_resources_pack_region;
return g_resources_pack_fd;
}
int GetCommonResourcesPackFd(base::MemoryMappedFile::Region* out_region) {
DCHECK_GE(g_chrome_100_percent_fd, 0);
*out_region = g_chrome_100_percent_region;
return g_chrome_100_percent_fd;
}
int GetLocalePackFd(base::MemoryMappedFile::Region* out_region) {
DCHECK_GE(g_locale_pack_fd, 0);
*out_region = g_locale_pack_region;
return g_locale_pack_fd;
}
int GetSecondaryLocalePackFd(base::MemoryMappedFile::Region* out_region) {
*out_region = g_secondary_locale_pack_region;
return g_secondary_locale_pack_fd;
}
std::string GetPathForAndroidLocalePakWithinApk(const std::string& locale) {
JNIEnv* env = base::android::AttachCurrentThread();
base::android::ScopedJavaLocalRef<jstring> ret =
Java_ResourceBundle_getLocalePakResourcePath(
env, base::android::ConvertUTF8ToJavaString(env, locale));
if (ret.obj() == nullptr) {
return std::string();
}
return base::android::ConvertJavaStringToUTF8(env, ret.obj());
}
} // namespace ui
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